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60results about How to "No imbalance" patented technology

Novel jig saw

The invention discloses a novel jig saw which comprises a head and a motor arranged in the head. A first driving wheel in linkage with a motor shaft extension end of the motor is eccentrically hinged with one end of a first connecting rod; and the other end of the first connecting rod is hinged with a first reciprocating rod on which a first saw blade is fixed. The novel jig saw is characterized by further comprising a second driving wheel in linkage with the motor shaft extension end; the second driving wheel is eccentrically hinged with one end of a second connecting rod; and the other end of the second connecting rod is hinged with a second reciprocating rod on which a second saw blade is fixed. The novel jig saw is also provided with a linear limiting mechanism which keeps a certain gap between the first reciprocating rod and the second reciprocating rod and can move linearly; the first saw blade and the second saw blade are respectively clamped on the inner side surfaces close to each other at the lower parts of the first reciprocating rod and the second reciprocating rod; and the linear reciprocating motion of the first saw blade is opposite to the linear reciprocating motion of the second saw blade. As the parts are symmetrically designed, the jig saw operates stably, is easy to operate and has relatively high working efficiency.
Owner:NINGBO LUTZ TOOLS CO LTD

Extruded expansion type biological fermentation feed and preparation and use method thereof

The invention relates to the field of microbial fermentation feeds, particularly discloses an extruded expansion type biological fermentation feed and a preparation and use method thereof, and aims atsolving the technical problems that the nutrition of an existing biological feed is easy to lose and not easy to preserve. The extruded expansion type biological fermentation feed is prepared from basic extruded expansion pellet feed and a compound fermentation solution, wherein the basic extruded expansion pellet feed comprises fish meal, shrimp meal, soybean meal, rapeseed meal, cotton seed meal, corn, flour, cassava pieces, bran, soybean oil, a vitamin premix, a trace element premix, monocalcium phosphate, vitamin C and choline chloride; the compound fermentation solution comprises a compound strain, a complex enzyme preparation, cane molasses or glucose and water. The preparation method comprises the steps that 10-30% of the compound fermentation solution is inoculated into the basicextruded expansion pellet feed, fermentation is carried out, and the extruded expansion type biological fermentation feed can be obtained. The biological fermentation feed meets the nutritional requirements of aquaculture animals, and can be effectively utilized, and beneficial bacteria and nutrients are not easy to lose but easy to preserve.
Owner:TONGWEI

Electric reciprocating saw

The invention discloses an electric reciprocating saw, comprising an enclosure and a motor which is used as a power source, wherein the motor is linked with reciprocating rods fixedly provided with saw blades through transmission mechanisms; two transmission mechanisms are arranged, have same structures and are arranged in parallel; each transmission mechanism comprises a large gear which is linked with an output end of the motor, a crank shaft fixed with the center of the large gear, and a swinging rod bearing arranged on the periphery of the crank shaft; the two large gears are respectively arranged at two sides of the tail end of the output end of the motor; the two reciprocating rods fixedly provided with the saw blades are arranged; and the swinging rod bearing in each transmission mechanism is connected with the respective reciprocating rod. The motor can drag the two large gears at the same time so that the two saw blades can do movements in opposite directions all the time so that the device can bear force in the opposite directions, resultant force of external force borne by the device is nearly zero and an unbalanced phenomenon does not happen; and therefore, the vibration caused by cutting is obviously reduced, the cutting is stable, the efficiency is high and the operation is safe. The relative position and the relative angle of a crank shaft body and a bearing inner ring are changed so that the saw blades have the two different working routes and the same reciprocating saw can meet the cutting requirements of workpieces with different textures at the same time.
Owner:NINGBO YINGFUSHENG BRAND INT

Junction terminal structure for transverse high voltage power device

The invention provides a junction terminal structure for a transverse high voltage power device. The junction terminal structure comprises a linear junction terminal structure and a curvature junction terminal structure; the curvature junction terminal structure comprises a drain electrode N+ contact zone, an N type drift zone, a P type substrate, grid electrode polycrystalline silicon, a gate oxide layer, a P-well zone and a source electrode P+ contact zone; the N+ contact zone, the grid electrode polycrystalline silicon and the gate oxide layer in the curvature junction terminal structure are respectively connected with an N+ contact zone, a grid electrode polycrystalline silicon and a gate oxide layer in the linear junction terminal structure so as to form an annular structure; the N type drift zone is divided into N subzones which are 21, 22 ... 2N from an internal boundary to an external boundary; the drain electrode N+ contact zone encloses the subzones which are 21, 22 ... 2N. An N type dosage concentration at a junction between the N type drift zone and the P type substrate in a curvature junction terminal part in the junction terminal structure disclosed in the invention is much lower than that in a traditional structure, the N type drift zone can be effectively exhausted by the P type substrate, and therefore voltage resistance of a device can be well optimized.
Owner:UNIV OF ELECTRONICS SCI & TECH OF CHINA

Composite microbial symbiosis induction culture technology based on SOD (Superoxide Dismutase), microbial symbiosis culture agent and application of composite microbial symbiosis induction culture method and microbial symbiosis culture agent

The invention relates to the field of microbial symbiosis culture, in particular to a composite microbial symbiosis induction culture technology based on SOD (Superoxide Dismutase), a microbial symbiosis culture agent and application of a composite microbial symbiosis induction culture method and the microbial symbiosis culture agent. The microbial symbiosis culture induction method provided by the invention classifies target strains according to the demand for oxygen content; firstly, the strains with similar oxygen demand are combined and cultured to obtain a plurality of strain groups, theinduction of symbiosis culture is started from the strains with the lowest oxygen demand; by ensuring the amount of bioactive superoxide dismutase in the system and gradually increasing the oxygen content in culture conditions, the adaptability of the system is improved; when the oxygen content reaches a certain concentration, the strain groups with similar oxygen demand are added, and then the adaptability of the system to higher oxygen content is improved by ensuring the amount of the superoxide dismutase in the system and gradually increasing the oxygen content in the culture conditions; byrepeating the operation until symbiosis culture of all strain groups is finished, the microbial symbiosis culture agent can be obtained.
Owner:浙江黛君生物医药科技有限公司

High-pressure sprayer

The invention discloses a high-pressure sprayer, which comprises an outer barrel body, two inner liners, a charging pump, a liquid outlet pipe, a liquid inlet pipe, a spray head, a pressure gauge and a pressure reducing valve, wherein the two inner liners and the charging pump are arranged in the outer barrel body; the liquid inlet pipe is communicated with the bottoms of the two inner liners; a four-way joint is also arranged in the outer barrel body; the four-way joint is communicated with the charging pump, the liquid inlet pipe, the liquid outlet pipe, the pressure gauge and the pressure reducing valve by pipes respectively; the communicated part of the four-way joint and the bottom of the charging pump is provided with a one-way valve; and the communicated part of the liquid inlet pipe and one of the inner liners is provided with a sealed self-locking device which can synchronously control liquid inlet or liquid outlet of the two inner liners. The high-pressure sprayer has simplestructure and convenient operation, ensures the balance of liquor amount during charging the two inner liners, prevents the phenomenon of producing un-equality, and also ensures the balance of gas pressure in the two inner liners; therefore, during spraying, the liquors in the two inner liners can be basically sprayed up at the same time but do not produce imbalance, and can effectively seal and self-lock the reserved gas inside the inner liners when the liquor in the inner liners is used up.
Owner:JINGJIANG WEIYI INTPROP SERVICE

Three-phase diode clamping three-level double-sampling single immediate refreshing method

The invention discloses a three-phase diode clamping three-level double-sampling single immediate refreshing method which is applied to a voltage quality adjusting device with a three-phase diode clamping three-level topological structure. The three-phase diode clamping three-level topological structure comprises an incoming and outgoing line circuit breaker, a three-phase full-control inverter / rectifier bridge, a direct current side electrolytic filter capacitor, a rectification side LCL filter circuit, an inversion side LCL filter circuit, a coupling series transformer and an inversion side electronic and mechanical bypass part, the controller DSP generates a modulation wave through operation, generates a pulse width modulation signal after PWM modulation, and outputs the pulse width modulation signal to the inverter side. The pulse width modulation signal is converted through the hardware driving circuit to control the on-off state of the three-phase rectifier / inverter. According to the method, the amplitude of the modulation wave can be updated before the modulation wave and the carrier wave intersect in a switching period, the modulation wave updating delay is eliminated, the robustness of a control system is improved, and the steady-state and dynamic performance of grid-connected current is improved.
Owner:SUZHOU AIKE BORUI POWER SUPPLY TECH

Method for improving luminous intensity and thermal stability of nitride red fluorescent powder

The invention relates to a method for improving the luminous intensity and thermal stability of nitride red fluorescent powder, in particular to a method for improving luminous intensity and thermal stability of nitride red fluorescent powder CaAlSiN3: Eu < 2 + > by using hexagonal boron nitride (hBN) as a boron source dopant. The method comprises: on the basis of taking EuN, Ca3N2, AlN and Si3N4 as raw material powder, adding a certain proportion of h-BN ultrafine powder into a glove box, weighing, grinding, charging into a graphite mold and the like, putting the graphite mold filled with the mixed raw material powder into a plasma field sintering assisting device, sintering at 1400-1450 DEG C under the condition that the cavity pressure is less than 50Pa, controlling the reaction heating rate to be 180-200 DEG C/min and the heat preservation time to be 3-5 minutes, and after sintering, taking out a block and grinding the block to obtain the Ca0.99 (Al1-xBx) SiN3: 0.01 Eu < 2 + > boron-doped nitride red fluorescent powder with high luminous intensity and high thermal stability. The preparation method is simple in process and high in repeatability, the luminous intensity of the prepared product is improved by 30%-40% compared with that of boron-free powder, and the thermal stability is obviously improved.
Owner:WUHAN UNIV OF TECH
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