209results about How to "Process loss is small" patented technology

The invention discloses a fast and efficient video coding intra mode determining method. The fast and efficient video coding intra mode determining method includes the steps of prediction manner configuration and prediction mode selection. According to the prediction mode selection, the correlations between brightness intra prediction modes of a current CU layer and brightness intra prediction modes of CU layers above the current CU layer, the correlation between CBF and TU segmentation depth, and the correlations between chroma intra prediction modes of adjacent CU layers are utilized, and redundant intra mode prediction can be skipped, and therefore, coding computation complexity can be decreased. According to the correlation between a cost function and RDcost and the correlations between chroma intra prediction modes and brightness intra prediction modes, a minimum-cost prediction mode and an optimal brightness prediction mode in RMD are added in a brightness and chroma intra prediction process, and therefore, video coding efficiency and video quality can be ensured. Compared with high efficiency video coding (HEVC) standards in the prior art, the fast and efficient video coding intra mode determining method of the invention can greatly decrease coding computation complexity under the premise that bit rate and video quality are almost unchanged.

The invention discloses a plastic retaining type polyether assemblage carboxylic acid high-performance water reducing agent and a preparation method thereof, mainly being applicable to the field of building materials. The water reducing agent is obtained in the following method: with the action of initiating agent, copolymerizing unsaturated polyalkyl ether monomer (A), unsaturated monocarboxylic acid and derivative monomer thereof (B), unsaturated dicarboxylic acid and derivative monomer thereof (C) and unsaturated sulfonic acid or salt monomer (D) in water solution for 2-8h at 50-80 DEG C and then reducing temperature to 35-45 DEG C, using alkaline solution to neutralize the mixture to a pH value of 5-7, thus obtaining the water reducing agent. The synthesized water reducing agent of the invention features changeable molecular structure, high water reducing ratio, high dispersion property under low dosage and fine slumps-retaining property, good adaptability to concrete raw material; in addition concrete with the water reducing agent added enjoys good peaceability; with the one-step method synthesis technology employed, the preparation method has the advantages of simple operation, low energy consumption in production and freedom from pollution.

The invention discloses an optical touch panel structure, comprising a color filter substrate with multiple pixel units and a thin film transistor substrate, wherein each pixel unit is composed of a red block, a green block and a blue block; the thin film transistor substrate is provided with multiple photo-sensitive cells corresponding to the pixel units; the non-photo-sensitive areas corresponding to the photo-sensitive cells on the pixel units are provided with a black matrix respectively; the black matrixes are configured on the red block or the green block or the blue block so as to adjust the aperture opening ratio of the red block, the green block and the blue block by utilizing the occupied area of the black matrix on each block and enable the deviations of brightness and color to reach a balance point respectively, thus minimizing the color deviation and brightness loss.

The invention relates to the design and synthesis of a poly carboxylic acid water reducing agent, the coagulating time of which can be controlled. The poly carboxylic acid water reducing agent is prepared by co-polymerize the following three monomers in water: the monomer a occupying 30 to 70 percent and indicated by a general expression 1, the monomer b occupying 10 to 50 percent and indicated by the general expression 2, and the monomer c occupying 10 to 40 percent and indicated by the general expression 3. The coagulating time is controlled by the monomer a which is made by condensing maleic anhydride and polyoxyethylene monoalkyl ether. The length of a polyoxyethylene monoalkyl ether chain controls the change of the coagulating time: the longer the chain, the shorter the coagulating time is; and the shorter the chain is, the longer the coagulating time is. The monomer a does not contain inhibitive substances in the process of synthesis, therefore, the water reducing agent is easy to be controlled in the coagulating process. The poly carboxylic acid water reducing agent is suitable for the construction of concrete under different temperature conditions: under higher temperature, the water reducing agent with longer coagulating time can be adopted, and under lower temperature, the water reducing agent with shorter coagulating time can be adopted. The poly carboxylic acid water reducing agent has good adaptability to cement and admixtures and has the advantages of low mixing quantity, good slump constant hold facility and water segregation resistance, and the like.

The invention discloses a processing technology of decaffeinated red tea. According to the processing technology, after being moderately withered according to a traditional red tea processing technology, fresh tea leaves are frozen and unfrozen, and intracellular membrane structures of the tea leaves are broken; after the tea leaves are rolled and fermented, caffeine in the tea leaves are removed by utilizing high-temperature steam de-enzyme and vacuum microwave drying manners. According to the processing technology, a pure physical manner is utilized, the complete external shapes of the tea leaves are not damaged, no chemical solvent or carrying agent is added, and the caffeine in the tea leaves is removed. The processing technology has the advantages that the caffeine removing effect is good, the technology is simple and feasible, and the production cost is low.

The invention relates to a method for detecting the content of trace elements in cheese, which comprises the following steps of: 1) weighing a cheese sample and drying the sample for completely evaporating the water in the sample, then weighing the sample after drying and utilizing the weight difference of the sample before and after the drying to calculate the water content in the sample, and then taking the dried sample for being grinded and homogenized, adding acid for dissolving the dried sample, and adding suspension stabilizer for even mixing and stable dissolving, thereby obtaining solution to be detected; and 2) utilizing inductive coupling plasma emission spectroscopy or atomic absorption spectrometry for detecting the content of trace elements in the solution to be detected. By adding the suspension stabilizer, the solution is suspended stably, thereby achieving the purpose of leading the solution to be homogeneous. The detection method is simple, rapid and accurate, and has high-sensitivity.

The invention disclose a filter paper impregnating emulsion in the automotive industry and a method for modifying the filter paper impregnating emulsion by using a polymeric emulsifier, and relates to a filter paper water-soluble impregnated resin in the automotive industry and the method for modifying the filter paper impregnating emulsion in the automotive industry by using the polymeric emulsifier. The emulsion of the invention comprises the polymeric emulsifier of 0.5 percent to 4 percent, a general emulsifier of 0 to 3 percent, hard-monomer styrene of 40 percent to 55 percent, soft-monomer acrylic ester of 40 percent to 55 percent, crosslinking monomer of 2 percent to 5 percent, and functional monomer of 2 percent to 10 percent according to the mixture ratio of the mass percent. The invention has the modification method that: the hard-monomer, the soft-monomer, the crosslinking monomer and the functional monomer are used as a copolymer, and the automobile air filter paper water-soluble impregnated resin is synthetized through a semicontinuous pre-emulsification emulsion polymerization method. The invention greatly enhances the hydrolytic resistance, solvent resistance and strength character of the filter paper after the impregnating in the water-soluble resin, lowers the emulsion manufacturing cost, and reduces the environment pollution caused by dissociative emulsifier after the general emulsion is applied. The invention has the advantages of high monomer percent conversion, stable emulsion, etc.

The invention provides CA (cement and asphalt) mortar for CRTS II slab ballastless tracks, aiming to ensure the CA mortar to have better working performance and compression and breaking strength. The invention is characterized in that the polycarboxylic acid water reducer with water reduction quantity toward CA mortar cement being 0.13-0.22% is mixed in emulsified asphalt in the emulsifying process and the melamine water reducer with water reduction quantity toward CA mortar cement being 0.21-0.22% is admixed in the process of blending the emulsified asphalt and mortar. The invention has the following beneficial effects: the dispersion degree and fluidity of the mortar have lower losses; the CA mortar has good working performance; and the compression and breaking strength of the CA mortar are effectively improved.

A quantum dot blue light filtering film and a display thereof relate to the technical field of a flat display, and solve the problem that the brightness of a display module after filtering will be reduced in different degrees if conventional blue light filtering films absorb part of blue light components. The quantum dot blue light filtering film comprises a substrate, a quantum dot coating layer evenly coating the substrate, and a protective film covering the quantum dot coating layer. The quantum dot coating layer comprises more than one quantum dot that emits non-blue light through stimulation of part of blue light in white incident light so as to reduce brightness of blue light in white outgoing light. Compared with the solution of the prior art, the solution of the invention utilizes blue light in white light to simulate quantum dots in the quantum dot blue light filtering film to emit light of other colors instead of just simply filtering blue light, so that brightness of blue light in white light is reduced, a clean blue light eye protection purpose is achieved, the intensity of light of other colors is increased, and the overall brightness of white light will not be lost or will be lost quite slightly.

The invention discloses a finishing method of a cotton-hydrophobic fabric based on BTCA-TEOS-OA combined treatment and belongs to the technical field of functional textiles. The finishing method is characterized in that 1,2,3,4-butanetetracarboxylic acid is adopted for pretreating the fabric so as to increase the capability of reaction between the fabric and a following chemical reagent and function as a bridge; tetraethoxysilane is hydrolyzed and condensated under the acidic or alkali condition so as to form particulate matters on the surface of the fabric and play a role in roughening the fabric; due to long-chained alkane type octadecylamine, the surface energy of the fabric can be effectively reduced, and further the environmental problem caused by total-fluoride energy is avoided. The finishing method disclosed by the invention has the advantages that the traditional processes of soaking, rolling, drying and baking are adopted, and a product is good in uniformity and repeatability and low in cost. BTCA, TEOS and OA adopted in the finishing process need to be carried out under the condition of weak acid and weak alkaline, the baking temperature is low and the damage on the fabric is less. The finishing method can be used for finishing the hydrophobic function of the cotton fabrics.

The invention provides an image sensor and a column processing circuit thereof. A column processing unit of the column processing circuit comprises a reference voltage unit, an optical intensity voltage unit and a differential output switch, wherein the reference voltage unit comprises a control switch and an operational amplifier circuit which are sequentially connected in series from an input end to an output end as well as a grounding capacitor with one end being connected between the control switch and a voltage follower; the optical intensity voltage unit comprises a control switch and an operational amplifier circuit which are sequentially connected in series from an input end to an output end as well as a grounding capacitor with one end being connected between the control switch and a voltage follower; one end of the differential output switch is connected between the control switch of the optical intensity voltage unit and the operational amplifier circuit of the reference voltage unit, and the other end is connected between the control switch of the optical intensity voltage unit and the operational amplifier circuit of the optical intensity voltage unit, wherein the operational amplifier circuit is connected in a way of the voltage follower. The invention improves the precision of an optical intensity voltage signal output by the column processing circuit.

An optical fiber in which the hollows near the connecting end of the optical fiber having a plurality of hollows around the core are filled with a light-transmitting substance such as resin or glass having a lower refractive index than quartz-based materials. The connecting portion of the optical fiber connects an optical fiber having a plurality of hollow holes in the cladding around the core to another optical fiber through a refractive index lower than that of the core at the lowest temperature in actual use. A matching agent is used to align and connect the optical fiber with the other optical fiber.

The invention discloses probiotic dry red wine and a preparation method thereof. The preparation method includes that dry red wine and rose flowers are used as raw materials, and low-temperature extraction technologies like high-voltage pulse electric field, microwave, ultrasound and biological enzymolysis are organically combined, so that functional substances and fragrant ingredients of the rose flowers can be retained to maximum extent; probiotics like functional Lactobacillus plantarum are used as fermentation agents, and temperature-variable fermentation and graded inoculation are adopted, probiotic multiplication and accumulation of functional metabolite can be realized to maximum extent, malic acid in the dry red wine can be further converted into lactic acid, acor of the dry red wine can be eliminated, and taste, healthcare function and wine stability of the dry red wine can be improved; the high-voltage pulse electric field, ultrasonic technology and peracetic acid are combined to accelerate aging, so that the probiotic dry red wine obtained has quality equivalent to that of existing fermented common dry red wine after aging for 8-10 years, and is good in aging effect, short in period and high in efficiency.

The invention provides a raw oil lifting system and a method for conveying a fluid by utilizing a sliding vane pump. The raw oil lifting system comprises an oil pipe and an oil pump connected with the oil pipe, wherein the oil pump is the sliding vane pump; the sliding vane pump is provided with a barrel-shaped stator; a drive shaft arranged in the stator along a direction parallel to the length of the stator, and a rotor sleeved onto the drive shaft are arranged in the stator; the lower end of the stator is provided with a suction disk; the upper end of the stator is provided with an exhaustion disk; the suction disk, the exhaustion disk and the stator form a barrel-shaped inner cavity; the rotor is arranged between the suction disk and the exhaustion disk; the suction disk is provided with a suction hole for sucking raw oil; and the exhaustion disk is provided with an exhaustion hole for exhausting the raw oil. The method for conveying the fluid by utilizing the sliding vane pump comprises the steps of sucking and exhausting the fluid from the direction of the end part of the stator to perform a lifting process.

The invention discloses a malachite chemiluminescence ELISA detection method and a kit. According to the invention, it is the first time to discuss chemiluminescence ELISA mechanism of malachite, a malachitechemiluminescence ELISA detection system and a detection method are successively established, and perfect combination of high sensitivity and high specificity is realized. The kit provided by the invention has high sensitivity, accuracy, precision and stability, is used to simplify operation steps and reaction time and reduce errors caused by complex operation, is very suitable for trace analysis and batch detection of malachite residues, and is of great practical application significance.

The invention provides a micro cyclone separator with a double-side air inlet function and a high-pressure separation device adopting the separator. The micro cyclone separator with the double-side air inlet function comprises an inner pipe and an outer pipe. An air outlet of the cyclone separator is formed in the top of the inner pipe. Part of the lower portion of the inner pipe enters the upper portion of the outer pipe. The top of the outer pipe is connected with the outer wall of the inner pipe in a sealing mode. The micro cyclone separator is characterized in that two air inlets communicating with the interior of the outer pipe are formed in the top of the outer wall of the outer pipe, and the two air inlets extend in the tangential direction of the outer wall of the outer pipe correspondingly and are distributed in a central symmetry mode. By means of the double-side air inlets which are distributed in the tangential direction in the central symmetry mode, the air inlet area is effectively increased, the air inlet efficiency is improved, the medium treating capacity is improved, the pressure drop is reduced, and the separation efficiency is improved.

The invention discloses an automatic plane screen paste printing technology for metalizing a ceramic discharge tube. Apart from a paste preparation step, the technology also comprises the following steps of: 1) fixing a ceramic piece; 2) mounting a stainless steel sieve, wherein the screen mesh of the stainless steel sieve is 100, and tension is about 300+ / -20 N / cm<2>; 3) adjusting a doctor blade, an objective table and a leakage blade; 4) uniformly distributing the paste; and 5) printing the paste. Through the invention, the metallized paste layer has uniform thickness, good consistency and smooth surface; the technology adopts automatic operation and has high paste coating efficiency; and the process is easy to control, and the quality is easy to guarantee.

The invention discloses an oil-resistant low-smoke halogen-free flame-retardant flexible polyurethane cable material and a preparation method thereof. In the preparation method, polyol and polyisocyanate are applied to react, wherein the R value is controlled to be 2.05-2.45, and a polyurethane prepolymer with a certain molecular weight and isocyanate groups at the two ends is synthesized. The synthesized isocyanate-terminated polyurethane prepolymer is mixed with white carbon black, a flame retardant and a mineral filler, and functional inorganic particles, with polyurethane as a soft shell and filler as a hard core, are formed through a physical dispersion effect and a mechanical force chemical reaction. The hardness of the polyurethane cable material can be reduced, and the flexibilityand oil resistance of the polyurethane cable material are improved. According to the cable material, a multi-layer network structure is formed through irradiation crosslinking and secondary vulcanization processes, so that the mechanical property of the material is improved, and the size shrinkage rate of the material in the forming process is reduced. The cable material can be used for manufacturing insulation and sheaths of low-smoke halogen-free flame-retardant cables, flexible special cables, new energy automobiles and Chinese standard motor train unit lighting wires.

The invention discloses high-parameter ORC turbine power generation equipment applied to engine waste heat recovery, which is characterized in that a rotating shaft of a generator is connected with amain shaft of an expansion machine to convert the work of the expansion machine into electric energy for storage or utilization, the expansion machine comprises an air inlet pipeline, a nozzle group including a plurality of stationary blades, an impeller, a turbine rotor and a shell, the expansion machine adopts a supersonic axial flow impulse type design, the turbine rotor is fixed on the shell through a bearing, a flow channel formed between two adjacent stationary blades in the nozzle group is in a scaling type, a special molded line is formed at the throat, the impeller is fixed on the rotor and rotates to drive the turbine rotor to rotate, air enters the air inlet pipeline, the airflow flows through the scaling type flow channel for acceleration, reaches the sound speed at the throatand is continuously accelerated, the airflow impacts the impeller to rotate and then is exhausted through an exhaust cavity, the impeller rotates to drive the turbine rotor to rotate, and the turbinerotor drives a rotating shaft of the generator to coaxially rotate. The equipment is suitable for a high-parameter ORC ethanol turbine with a large pressure ratio and small flow rate, and the achievable highest expansion efficiency is obtained.

A composite impregnating adhesive for making a fireproof heat insulation plate comprises a phenolic resin, a flame inhibitor, a smoke inhibitor, a chelating agent, a charring agent, an inorganic adhesive, a waterproof agent, a catalyst and a stabilizing agent, wherein the phenolic resin is a primary adhesive. The aqueous impregnating adhesive is prepared through adding water and adopting a normal temperature mixing stirring process. Water is added as needed in the use process to dilute and adjust the concentration. The composite impregnating adhesive has the characteristics of no use of organic solvents bringing dangers and pollution, use convenience, simple control of the production process, less discharge of pollutants, and low cost. Compared with coats of other resin based impregnating adhesives, a coat of the composite impregnating adhesive, formed on the surfaces of fibers, has the advantages of protruding high temperature and burning resistances, almost no combustion or smoke at a high temperature, and low heat conductivity; and the fireproof heat insulation plate made through adopting the composite impregnating adhesive has a protruding fireproof heat insulation performance reaching an A1-level fireproof standard. The composite impregnating adhesive can be used for processing basalt fibers, and can also be used for processing various organic and inorganic fibers comprising rock wool, glass fibers, carbon fibers, stainless steel fibers, aramid fibers terylene and the like.

The invention discloses a lightning protection system of an ultra-high voltage alternating-current double-loop circuit. The system comprises an ultra-high voltage alternating-current double-loop tension-resistant tower (10) and an ultra-high voltage alternating-current linear tower (1). The best ultra-high voltage alternating-current double-loop circuit lightning protection model is determined through different arrangement and combination of an OPGW (optical fiber composite overhead ground wire) optical cable or earth wire (6), a V-shaped suspension string (7), a suspension string (8) of the OPGW optical cable or a lightning wire, and a tension-resistant string (9) of the OPGW optical cable and the lightning wire, wherein an upper layer of cross arm (2) and a middle layer of cross arm (3) of the ultra-high voltage alternating-current linear tower (1) are laterally hung to the OPGW optical cable or the earth wire (6); and the upper layer of cross arm (2), the middle layer of cross arm (3) and a lower layer of cross arm (4) are downwards hung to the V-shaped suspension string (7) and a multi-splitting lead (5). The system can effectively prevent shielding lightning and is high in lightning protection effect.

The invention discloses rose dry white wine and a preparation method thereof. The rose dry white wine is prepared from dry white wine and rose flowers; at a certain pH value (2.5-4.0), laccase and diatomite, which are scientifically combined, are used for decolorizing a rose flower jam, so that 88-92% of phenols and 93-97% of anthocyanidin in the rose flower jam are removed; through the organic combination of such low-temperature extraction technologies as high-pressure pulsed electric field, microwave, ultrasound, biological enzymolysis and the like, the functional substances and fragrance components of the rose flower can be reserved to the greatest extent; by taking such probiotics as functional lactobacillus plantarum and the like as a fermenting agent, the multiplication of the probiotics can be maximized and the maximum accumulation of functional metabolic products can be achieved in the modes of variable temperature fermentation and fractionated inoculation; the obtained rose dry white wine, which is catalyzed and aged by the combined action of the high-pressure pulsed electric field, ultrasonic technology and peracetic acid, is equivalent to the quality of existing normal fermented dry white wine which is aged for 8-10 years in quality index; and the rose dry white wine is good in aging effect, short in cycle, high in efficiency and good in color and taste stabilities.

The invention relates to a method for detecting molybdenum element in milk powder. The used equipment is an inductively coupled plasma atomic emission spectrometer. The method has the following steps of: 1) preparing molybdenum element standard solution and making a standard curve according to the standard solution; 2) oxidizing a milk powder sample to be tested by using peroxide, performing acid treatment by using nitric acid, digesting in a microwave digestion system, and detecting by using equipment parameters same as the standard solution to obtain a detection result of the sample to be tested; and 3) comparing the detection result of the sample to be tested with the standard curve to determine the content of the molybdenum element in the sample to be tested. The instrument detection limit of the method is 0.0071 mu g / ml, and in an element linear range, the related coefficient r is over 0.999, and the recovery rate is 92.0 to 101.8 percent. The method can quickly and accurately detect the content of the molybdenum element in the milk powder, and has the advantages of low element loss and pollution probability in the sample preparing process, accurate and reliable result, good repeatability and high sensitivity.

The invention discloses a gas turbine main combustion chamber multi-channel diffuser with the intelligently adjustable diffusion ratio, and belongs to the technical field of gas turbine combustion. The diffusion ratio flowing through an inner diffusion channel and an outer diffusion channel can be intelligently set by adjusting the expansion angle of a cone located in a diffuser casing, the target diffusion ratio of each channel is set according to different working conditions, so that the sum of friction loss and separation loss of the diffuser is minimum; in addition, the multi-channel diffuser guides two air flows to a designated area of the head of the double-ring-cavity combustion chamber, the air flows of the main combustion stage and the pre-combustion stage of the double-ring-cavity combustion chamber can be intelligently distributed by adjusting the position of a flow dividing cone located in a diffuser casing, according to different working conditions, the set oil-gas ratio of each area is obtained, so that high combustion characteristics and low pollution emission are realized.

The invention relates to a catalyst for synthesis of an acetylene alcohol polyoxyethylene ether, and mainly aims to solve the technical problem of unsaturation loss of the acetylene alcohol polyoxyethylene ether caused by the existing catalyst. The catalyst for synthesis of the acetylene alcohol polyoxyethylene ether comprises at least one of calcium hydroxide, a tertiary amine aliphatic compound and a protonic acid. Thus, the technical problem is well solved, and the catalyst can be applied to industrial production of the acetylene alcohol polyoxyethylene ether.

The invention discloses a silk degumming method.The silk degumming method comprises the following steps that 1, water is contained in a containing tank, heating is performed to increase the temperature, the temperature is kept at 60 DEG C-90 DEG C, and citric acid and tartaric acid are added; 2, silk or a silk fabric is put into the containing tank, ultrasonic waves are started, the ultrasonic wave frequency is 50-60 KHz, and the treatment time is 20-40 min; 3, washing is performed with water at the temperature of 50 DEG C-70 DEG C and then performed again with water at the temperature of 20 DEG C-30 DEG C.The silk treated through the silk degumming method has the advantages that the breaking strength loss and the breaking elongation loss are both little, and sericin in raw silk is basically removed; the whiteness, glossiness and dyeing property of the silk are improved, and meanwhile the handfeel of the silk is soft and smooth; the silk fabric prepared in subsequent treatment is good in glossiness and handfeel, and the quality of the fabric is improved.

The invention provides a sliding vane pump and a method using the sliding vane pump to convey fluid. The sliding vane pump is provided with a cylindrical pump casing, and the pump casing is internally provided with a driving shaft, a rotor sleeved on the driving shaft, and a sliding vane arranged on the rotor, wherein the sliding vane and an inner cavity of the pump casing are sealed in a contact manner; an end cover is arranged at the end part of the pump casing; the sliding vane pump further has a sliding vane pump suction port and a sliding vane pump discharge port; and the sliding vane pump suction port and / or the sliding vane pump discharge port are located on the end cover of the pump casing. The invention further provides a sliding vane pump, and the sliding vane pump includes a plurality of cylindrical pump casing, and has a sliding vane pump suction port and a sliding vane pump discharge port; the sliding vane pump suction port and / or the sliding vane pump discharge port are respectively located on the end cover; and fluid transfer openings penetrating the upper end surfaces and the lower end surfaces of partitions are arranged on the partitions. According to the method using the sliding vane pump, the fluid is sucked and / or discharged in the direction of the end part of the pump casing so as to pump.

The invention discloses a novel sewage pump cutting device. The novel sewage pump cutting device is mainly composed of a bearing (1), a mechanical seal (2), a connecting key (3), an impeller (4), a pump shaft (5), a front cover plate (6), a ring (7), a cutter head (8), a round nut (9), a pump body (10), an impeller inlet (11) and the like. A submersible sewage pump is provided with the cutter head (8) mounted at the impeller inlet (11) in a pump housing and having dual functions of cutting and stirring. The cutter head (8) is mounted on the pump shaft (5) in front of the impeller inlet and in co-rotation with the impeller to form three-blade radial uniform distribution. The thickness L of every blade of the cuter head (8) is 10 mm-18 mm and the inclination angle alpha is 70 degrees to 85 degrees. The cutter head is treated in a heat treatment process for improving the hardness, abrasion resistance and impact resistance. Impurities, such as long fibers and large particles in sewage are pre-cut by the cutting device before entering the impeller and discharged to a sewage pipe through the sewage pump. The novel sewage pump cutting device has the advantages of solving the problems of particle clogging, long fiber winding and sedimentation of the sewage pump, achieving pre-cutting of impurities, such as the long fibers, ensuring the passing-through performance and the anti-clogging performance of the sewage pump, prolonging the service life of the sewage pump and improving the operation stability of the sewage pump.

The invention relates to a method for detecting a zinc element in yolk powder, which comprises the following steps of: 1) preparing standard zinc solution of which concentration is 0.1 mu g / ml to 1.0 mu g / ml, and making a standard curve according to the standard solution; 2) weighing, heating and drying a yolk powder sample to be detected, dissolving the dried yolk powder sample into a 5 volume percent hydrochloric acid, adding agar solution of which the concentration is 3 percent, well shaking the mixed solution and then performing detection with equipment parameters the same as those in the detection of the standard solution to obtain a detection result of the sample to be detected; and 3) comparing the detection result of the sample to be detected with the standard curve to determine the content of the zinc element in the sample to be detected. Detection equipment used in the method is an atomic absorption spectrophotometer. In the detection method, instrument detection limit is 0.03 mg / kg, and in a linear range, a related coefficient r of the element is over 0.999 and a coefficient of recovery is 95.1 to 100.2 percent. The detection method of the invention has the advantages of simple steps and accurate and reliable result.