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

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 electronically readable information zone.

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 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 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 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 chemical material dissolving device which comprises a base and a dissolving tank used for dissolving chemical materials, the dissolving tank communicates with a discharging pipe, a control valve is arranged on the discharging pipe, a mounting plate is arranged at the top end of the base, and a first stepping motor is fixedly mounted in the middle of the mounting plate. A connecting plate connected with an output shaft of the first stepping motor is arranged at the end, away from the first stepping motor, of the mounting plate, an annular mounting ring is arranged at the end, away from the mounting plate, of the connecting plate, an operation hole is formed in the mounting ring, the dissolving tank is arranged in the mounting ring, and openings are formed in the two ends of the dissolving tank. According to the chemical material dissolving device, the first liquid inlet hole is formed in a liquid pushing plate, so that a dissolving solution can enter the first liquid inlet hole in the upward or downward movement process of the liquid pushing plate, the contact area between the dissolving solution in the dissolving tank and a chemical material is larger, and the dissolving rate of the chemical material is increased.

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.

The invention relates to a steamed bun steaming system and steaming method. The steamed bun steaming system comprises an oven body, a baking channel, a humidity adjusting valve, a heating module and a conveying device, wherein the baking channel is arranged in the oven body and is provided with a feeding port and a taking port, the humidity adjusting valve is arranged on the oven body, the heating module is arranged in the baking channel, and the conveying device is arranged in the baking channel and is used for conveying baking items. The steamed bun steaming system is characterized in that the baking channel is divided into a baking area and a preheating area by the conveying device; the heating module comprises a plurality of heating parts arranged in the baking area, spaced in the conveying direction of the conveying device and used for heating the baking items, a plurality of preheating parts arranged in the preheating area, spaced in the conveying direction of the conveying device and used for preheating the conveying device, and a temperature sensors used for controlling all the heating parts and preheating parts and used for detecting temperature in the baking area or preheating area. The steamed bun steaming system has the beneficial effects that the steaming effect is good, and the resource utilization rate is high.

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 a self-locking type flow control valve and belongs to the technical field of building pipe network safety devices. The self-locking type flow control valve comprises a main body; the left side of the main body is connected with a branch pipe, and the right side of the main body is connected with a main pipe; the main body is composed of a pipe head piece, a valve element, acurve elastic piece and a heap-shaped spring; the main pipe head piece is connected in a hole in the end of the main pipe; the curve elastic piece is fixedly connected to a boss of a left side innerhole of the pipe head piece; a toothed groove is formed in the outer diameter of the left side of the pipe head piece and sleeved with a flexible lining; the branch pipe and the flexible lining are fixed through a pipe hoop; the right side of the pipe head piece is connected with an outer screw thread for screwed connection, and an inner screw thread for adjustment is machined at the inner diameter of the right side of the pipe head piece; a heap-shaped spring cavity is formed in a right side hole of the pipe head piece; a throttling opening is formed at one corner of the heap-shaped spring cavity; and the heap-shaped spring is placed in the heap-shaped spring cavity. The self-locking type flow control valve is convenient and humanized in structural design and has the advantages of being convenient to mount, easy to manufacture, high in universality, safe, reliable, long in life and the like.

The invention discloses a blood plasma separation micro passage. The passage comprises accommodating cavities used for accommodating erythrocytes, the accommodating cavities are distributed in space array, and a communicating passage used for the erythrocytes to penetrate through and blocking flowing of the erythrocytes is arranged between every two adjacent accommodating cavities. The invention further discloses a blood plasma separation chip. The blood plasma separation chip comprises the above-mentioned blood plasma separation micro passage, a blood sample inlet cavity is formed at one endof the blood plasma separation micro passage, and a collecting cavity used for collecting blood plasma is formed at the other end of the blood plasma separation micro passage. The blood plasma separation micro passage and the separation chip thereof can directly separate blood plasma, can avoid blockage, and can be suitable for the field of instant blood detection and the like.

The invention discloses a drying kiln for a non-dismantling heat insulating template. The drying kiln comprises a kiln body of which the two ends are opened; at least two layers of carrier rollers are arranged inside the kiln body; the carrier rollers are horizontally mounted and are vertical to the kiln body; the carrier rollers are mounted at equal intervals from one end of the kiln body to the other end of the kiln body; the distance between adjacent upper and lower carrier rollers is larger than the thickness of the non-dismantling heat insulating template; the carrier rollers are driven by a motor; the top of the kiln body is provided with a hot air inlet and a waste air outlet; the hot air inlet is connected with a heater; a circulating fan is mounted on the heater; the waste air outlet is connected with a chimney. According to the drying kiln disclosed by the invention, the non-dismantling heat insulating template is conveyed from one end to the other end of the kiln by using the carrier rollers; the contact area between the non-dismantling heat insulating template and each carrier roller is small; the drying area of the non-dismantling heat insulating template inside the kiln body is large; hot air flows at a high speed; good drying effect is realized; a plurality of layers of carrier rollers can be simultaneously used for conveying the non-dismantling heat insulating template, so the drying efficiency is greatly improved.

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 an energy-saving and environment-friendly device capable of improving a non-woven fabric leveling effect. The energy-saving and environment-friendly device capable of improving the non-woven fabric leveling effect comprises a shell, wherein the outer side of the shell is connected with a steam chamber; the left side and the right side of the steam chamber are each provided with a conveying assembly; each conveying assembly comprises a middle station; the inner side of each middle station is connected with a moving block; and the upper side of each moving block is connected with a connecting rod set. According to the energy-saving and environment-friendly device capable of improving the non-woven fabric leveling effect, the moving blocks slide up and down in the middle stations, and steam in the steam chamber is sprayed out of a spray head through a pipeline under the pressure effect, so that the leveling effect of a leveling rod on non-woven fabrics is better; meanwhile, the compression amount can be automatically adjusted through a fourth spring according to non-woven fabrics with different thicknesses, so that the device can be suitable for the non-woven fabrics with different thicknesses; and only one driving force consuming energy is needed by the device, and the structure achieves the effects that the leveling effect is good, the device can be automatically suitable for various thicknesses, the steam flowing speed is high, the steam amount is fixed, and energy conservation and environment protection are achieved.

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 discloses an atmosphere lamp for environmental art design and a using method thereof.The atmosphere lamp comprises a supporting rod, a sliding sleeve, a fastening bolt and a rotating rod, the sliding sleeve is arranged on the supporting rod, the fastening bolt is arranged on one side wall of the sliding sleeve, and a concave cavity is formed in the bottom end of the side wall of the sliding sleeve; and a connecting shaft is mounted in the concave cavity. The device has the beneficial effects that the connecting shaft, the rotating rod, the fastening screw and the supporting base are arranged, in the using process of the device, the connecting shaft is rotated to drive the rotating rod to rotate, then the supporting angle of the rotating rod is adjusted, after adjustment is completed, the connecting shaft is fixed through the fastening screw, and then the supporting base makes contact with the ground; in this way, the stability of the device during use is improved by increasing the supporting area of the device, the device is prevented from toppling over due to external force, the subsequent use performance of the device is guaranteed, the practicability of the device is improved, and the service life of the device is prolonged.

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 relates to an automatic steamed bun production system and a production process thereof. The system comprises an oven body, a baking channel, a humidity adjusting door, a heating module and a conveying device, wherein the baking channel is arranged in the oven body and provided with a feeding port and a taking port; the humidity adjusting door is arranged on the oven body; the heating module is arranged in the baking channel, and the conveying device is arranged in the baking channel and is used for conveying baked objects, the system is characterized in that the baking channel is divided into a baking area and a preheating area by the conveying device; the heating module comprises a plurality of heating parts which are arranged in the baking area, are arranged at intervals in the conveying direction of the conveying device and are used for heating baked objects, a plurality of preheating parts which are arranged in the preheating area, are arranged at intervals in the conveying direction of the conveying device and are used for preheating the conveying device; and temperature sensors which are used for controlling the heating parts and the preheating parts and detecting the temperature in the baking area or the preheating area; the method has the advantages that the steaming effect is good, resources are reasonably distributed, and the utilization rate is increased.

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.