54results about How to "Fast and efficient separation" patented technology

The invention relates to a method for directly detecting medicinal molecules on a magnetic imprinting immobilized substrate by surface enhanced Raman spectroscopy technology. In the method, molecular imprinting technology is better combined with magnetic separation technology by using nano particles which comprise Fe3O4 serving as nuclear molecules and imprinted polymers serving as shells and have a nuclear shell structure so as to fulfill the aims of quickly and efficiently extracting and separating the medicinal molecules in a mixed system. In-situ and high-sensitivity detection can be directly performed on the medicinal molecules which are imprinted on the immobilized substrate of the molecule imprinted polymers by the surface enhanced Raman spectroscopy technology on the premise that the molecule imprinted polymers on which the medicinal molecules are imprinted are not processed to acquire related spectral information. By the method, the molecular imprinting technology, the magnetic separation technology and the surface enhanced Raman spectroscopy technology are combined. The invention provides the method which has the advantages of high extraction efficiency, simplicity in separation and high sensitivity for detecting the medicinal molecules.

The invention provides a portable pipe clamping tightening and releasing device. The portable pipe clamping tightening and releasing device comprises two circular hoops. The two hoops are arranged left and right, and the central axes of the two hoops are coaxial. Each hoop comprises a semicircular upper hoop body and a semicircular lower hoop body, and the outer sides of the two ends of the upperhoop body and the outer sides of the two ends of the lower hoop body are both fixedly provided with horizontal plates; the horizontal plates are all provided with mounting holes; a bolt penetrates through the mounting holes of the two corresponding horizontal plates, and a nut is mounted at the other end of the bolt in a matched mode; a plurality of rotary shaft distributed uniformly around the central axis of each hoop body are arranged on the inner ring of the hoop body and are perpendicular to the central axis of the corresponding rotary shaft. The portable pipe clamping tightening and releasing device. The portable pipe clamping tightening and releasing device can quickly and efficiently complete draw two buried water pipes to get close and separated without manual operation, manpoweris saved, and quick and efficient installation and maintenance are realized. The portable pipe clamping tightening and releasing device. The portable pipe clamping tightening and releasing device is simple and ingenious in structure, convenient to use and capable of automatically completing connection and separation of large-size pipelines.

The invention discloses a method for determining solvents residual in an acotiamide hydrochloride bulk drug. The method adopts the following analysis conditions: the chromatographic column adopts a capillary chromatographic column with 6% cyanopropylphenyl 94% polydimethylsiloxane as the stationary phase; a reference substance solution is injected multiple times in a split flow manner, a sample solution is injected in the split flow manner, the carrier gas is nitrogen, the introduction is carried out by using a headspace injector, and detection is performed after temperature programming; and the detector adopts an FID detector. Methanol, isopropanol, dichloromethane and toluene in the acotiamide hydrochloride bulk drug are rapidly and efficiently separated under same chromatographic conditions through the method in order to effectively control the quality of acotiamide hydrochloride. The detection method has the advantages of strong specificity, high detection sensitivity, high precision, high accuracy, convenience in operation, and effective control of the product quality.

Disclosed is a vertical pyrolysis equipment for coal material, which comprises an enclosed kiln body with an inlet and an outlet, a flame-gas heating pipelines provided inside the kiln body, coal material propulsion and pyrolysis passage formed between the flame-gas heating pipelines and inner wall of the kiln body, coal pyrolysis gas collecting tube communicated with the coal material propulsion and pyrolysis passage provided on the kiln. The heat generated by flame-gas heating pipelines is conducted and radiated to coal powder in the coal material propulsion and pyrolysis passage. The coal powder sufficiently absorbs the heat and is pyrolyzed into fuel gas, tar gas and coal with high heat value inside the coal material propulsion and pyrolysis passage. The pyrolyzed fuel gas and tar gas are transferred to the gas dedusting-liquifying mechanism outside the kiln through the connecting coal pyrolysis gas collecting tube for collecting, dedusting, separating and high-pressure liquefying.

The invention discloses a wild honey separation machine. The separation machine comprises a rack, a motor, an outer bucket, a centrifugal bucket and a pressing disc. The outer bucket is installed on the rack, the centrifugal bucket is installed in the outer bucket through a centrifugal shaft on the lower portion for rotation, and the centrifugal shaft is connected with the motor in a belt drive mode. The pressing disc which can move in the vertical direction is installed in the centrifugal bucket and fixed to a lead screw which is installed in a pressing disc shaft. The pressing disc shaft is connected with a drive shaft in a belt drive mode, the drive shaft is connected with the motor, the pressing disc shaft is installed on the axis of the outer bucket, and the drive shaft is installed on the rack. A hole net is arranged on the wall of the centrifugal bucket, and a liquid discharging port is formed in the wall of the lower portion of the outer bucket. The pressing disc shaft is a tubular shaft, internal threads are arranged on the tubular shaft and matched with the lead screw, and belt wheels are arranged on the pressing disc shaft and connected with the drive shaft in a drive mode. A timing reverse rotation circuit is installed on the motor. Through vertical moving of the pressing disc, honey in honeycombs is pressed out, thrown out of the centrifugal bucket and collected by the outer bucket, the structure is exquisite, detaching and installing are convenient, moving is convenient, the wild honey separation machine can be used indoors and outdoors, operation is easy, the manufacturing and using cost is low, working efficiency is high, and honey and honeycomb separation is thorough.

The invention discloses a method for determining a residual N,N-dimethylacetamide solvent in a bulk drug. The method comprises the following steps: (1) preparing a medium-polarity capillary chromatographic column and a flame ionization detector and setting a temperature control mode of primary programmed heating and secondary programmed heating; (2) adding a diluent into the bulk drug so as to prepare a to-be-determined sample solution; (3) adding a diluent into N,N-dimethylacetamide so as to prepare a to-be-determined control solution; and (4) directly injecting the to-be-determined sample solution and the to-be-determined control solution into a gas chromatograph so as to finish determination of the residual N,N-dimethylacetamide solvent. According to the invention, the manners of programmed heating and direct sample introduction are employed for detection so as to prevent target peaks from interference by blank peaks, so detection accuracy is improved; the method realizes rapid high-efficiency separation and content determination of residual N,N-dimethylacetamide in the bulk drug; and the method is strong in specificity, high in precision and accuracy and convenient to operate, so medicine quality is effectively controlled.

The invention provides a connecting structure of a crab cage and a breeding rope, and belongs to the technical field of aquaculture equipment. The connecting structure solves the technical problem that an existing crab cage cannot be automatically recycled. A branch rope is connected to the crab cage. The connecting structure comprises a hook and an annular ferrule arranged at the end of the branch rope. The hook comprises a connecting block and a sleeve, the connecting block is fixedly connected to the breeding rope, a lock rod is slidably arranged in the sleeve, the inner end of the lock rodis inserted in the sleeve, the outer end of the lock rod stretches out of the lower end of the sleeve, a pull rope is connected to the connecting block, one end of the pull rope is connected with thelock rod, and a compression spring is arranged in the sleeve; one side of the sleeve is provided with a connecting rod which is bent in an arc shape downwards obliquely, the lower end of the connecting rod is bent towards the portion under the sleeve, a vertical through hole is formed in the outer circumferential face of the end of the connecting rod, the annular ferrule sleeves the connecting rod, and the outer end of the lock rod can be inserted in the through hole. By means of the connecting structure, automatic recycling of the crab cage and crabs is facilitated, and the connecting structure is convenient to use, stable and efficient.

The invention discloses a self-propelled harvester for rhizome traditional Chinese medicinal materials. The self-propelled harvester comprises a seat, a framework, a digging shovel, a bolt, a driving traveling system, a power transmission device, a vine cutting and conveying device, a double rocking lever shaking mechanism and an auxiliary traveling system, wherein the seat is mounted at the upper part of the front end of the framework; the digging shovel is mounted at the lower part of the front end of the framework and is positioned at the lower part of a vibrating screen II; a diesel engine base in the driving traveling system is connected with the framework through the bolt; the driving traveling system drives the auxiliary traveling system to move and can transmit power to the power transmission device; and the power transmission device respectively drives the vine cutting and conveying device and the double rocking lever shaking mechanism to move. The self-propelled harvester disclosed by the invention is simple in structure, convenient to operate, economic and practical, can achieve multiple purposes through one machine, and is applicable to harvesting of multiple rhizome traditional Chinese medicinal materials; the vine cutting and conveying device is arranged on the front surface, thereby effectively solving the problem of vine tangling in the harvesting process; and the double rocking lever shaking and soil removal device is used, thereby quickly and effectively realizing root-soil separation of a root-soil mixture dug out.

The invention method provides a quick detection method for trace-amount endotoxin. The method can detect the trace-amount endotoxin in various samples directly and sensitively in a high throughput. The invention also provided a corresponding kit which is composed of a 96-hole enzyme label plate, an endotoxin standard substance solution, a rabbit-anti-endotoxin polyclonal antibody (first antibody), a goat-anti-rabbit antibody which is labeled by horseradish peroxidase (second antibody) and a chemiluminescence reagent. According to the method, a specific pretreatment of a sample and ELISA detection are integrated together. An artificial antibody is high-temperature-resistant, acid-resistant, alkali-resistant and organic-solvent-resistant and can be used for high-efficient specifically separating and enriching the trace-amount endotoxin in the sample. The ELISA detection can specifically and quickly detect the enriched endotoxin. By means of combination with a high-sensitivity chemiluminescence method, the ELISA detection is effectively improved in sensitivity, accuracy and stability when endotoxin is detected so that the trace-amount endotoxin in various samples can be detected sensitively, quickly and in a high throughput.

The invention provides a tin ball separating device. The tin ball separating device comprises a material hopper used for storing tin balls, a machine table for supporting the material hopper, a shieldbody used for shielding the material hopper and a material moving mechanism used for moving tin balls in the material hopper; the material hopper is located in the shield body; a material fetching opening through which a sucking head of a manipulator extends into the shield body; the material moving mechanism comprises a material moving post arranged in the material hopper and a first linear driving mechanism which drives the material moving post to move the tin balls to the material fetching opening to be sucked by the sucking head; the first linear driving mechanism is arranged on the machine table; and the material moving post is connected to the first linear driving mechanism. During use, the first linear driving mechanism drives the material moving post to move the tin balls in the material hopper to the material fetching opening in the shield body, so that the tin balls in the material hopper can be separated rapidly, high-efficiently and automatically; a ball blocking phenomenon cannot occur; the tin ball separation efficiency is high; the tin ball separating device can also be applied to separation of tin balls of different sizes; and the situation that various tin ball separation devices need to be arranged for tin balls of different sizes can be avoided.

The invention discloses a coal decomposition method and equipment in cycle heating gas style. The coal decomposition equipment can avoid introducing impurity, ensure a pure decomposed gas and keep continuous heating without extrinsic heat source, which includes an airtight kiln body with coal inlet and coal outlet; a facility for impelling and decomposing coal set in the kiln body; a coal decomposed gas collecting pipe set in one end of the airtight kiln body, and a high temperature gas input pipe set in the other end of the airtight kiln body; wherein the coal decomposed gas collecting pipe is connected with a post-processing facility and communicates with the high temperature gas input pipe through a circle pipe, and the circle pipe and / or the high temperature gas input pipe comprises a heating device.

The invention discloses a preparation method of a catalyst for visible light-ozone synergistic catalysis and the catalyst prepared by the preparation method. The preparation method of the catalyst comprises the following steps of: preparing an active component ZnO-g-C3N4 and preparing the reduced graphene hybrid ZnO-g-C3N4 aerogel. By forming a Z-type heterojunction powder catalyst material ZnO-g-C3N4 from g-C3N4 and ZnO and loading the powder catalyst material ZnO-g-C3N4 onto a graphene gel framework with a three-dimensional structure, the obtained reduced graphene hybrid ZnO-g-C3N4 aerogel catalyst has excellent degradation efficiency on organic pollutants under visible light-ozone synergistic catalysis, and meanwhile, rapid and efficient separation and recovery of the catalyst are realized, so that the prepared catalyst has excellent cycling stability activity.

The invention discloses a green cultivation method of dendrobium candidum. The green cultivation method comprises the following steps: step 1, providing a greenhouse environment and dividing the inside of a greenhouse into a plurality of planting areas, wherein a cover part comprises a lifting mechanism arranged on the ground and a cover body arranged at the top end of the lifting mechanism and is arranged in each of the planting areas, a light-shading part comprises a scrolling shaft arranged in the middle of the outer wall of the greenhouse, black light-shading cloth wound on the scrolling shaft and a drive mechanism for driving the scrolling shaft to rotate and is also arranged at the central part on the outer wall of the greenhouse, and the drive mechanism is arranged nearby the greenhouse; step 2, preparing into a culture medium; step 3, culturing to obtain dendrobium candidum seedlings; step 4, culturing to obtain the dendrobium candidum. In the step 3, after each of the dendrobium candidum seedlings grows to 1 cm, the dendrobium candidum is sprayed with an epidemic prevention reagent once every 3-5 days, and each plant is sprayed with 1-10 mL; in the step 4, the dendrobium candidum is sprayed with an epidemic prevention reagent once every 5-10 days, and each plant is sprayed with 8-15 mL.

A separation device for small animals in soil comprises a hollow barrel joint and a funnel; an upper opening of the barrel joint is provided with a top cover; a lower opening of the barrel joint is in butt joint with the large end of the funnel; a horizontal screen is arranged in the barrel joint; on the inner wall of the barrel joint, a first supporting block is arranged on the bottom face of the screen; the screen is fixed to the first supporting block; a gap is formed between the outer edge of the screen and the inner wall of the barrel joint; a baffle is arranged on the outer edge of the screen; a motor with an upward rotating shaft is fixed to the middle portion of the screen; fan blades are fixed to the rotating shaft of the motor; a heating plate is arranged below the screen; on the inner wall of the barrel joint, a second supporting block is arranged on the bottom face of a heating plate which is fixed to the second supporting block; a gap is formed between the outer edge of the heating plate and the inner wall of the barrel joint; the funnel is fixed to a supporting frame; and a collecting bottle is arranged below the small end of the funnel. The separation device can efficiently and fast separate the small animals in the soil.

The invention discloses a chessboard, in particular to a magnet chessboard, which comprises a chessboard body and a positive-pole magnet board. The magnet chessboard is characterized in that the positive-pole magnet board is mounted at the bottom of the chessboard body, negative-pole magnets are respectively mounted in white chessmen, recesses are arranged at two ends of the chessboard body, and suckers are arranged at the top end of one side of the bottom of the chessboard body. The magnet chessboard has the advantages of assisting players to separate black chessmen from white chessmen quickly and effectively so that time of the players can be saved greatly.

The invention discloses a separating device and belongs to the technical field of process equipment. The device comprises a first shell and a second shell which is transversely distributed, wherein a part of or all the second shell is wrapped by the first shell, a filtering channel used for filtering is arranged at a part wrapped by the first shell of the second shell, a cavity of the first shell and a cavity of the second shell are communicated through the filtering channel, and the second shell is arranged in a rotatable mode to change the position height of the filtering channel to enable materials to be filtered by the filtering channel into the first shell. The device achieves material separation by utilizing a rotating mode. When being applied to a traditional Chinese medicine preparing process, the device can solve the problem that the filtering channel is plugged by concentrated solution thick precipitation; meanwhile, the filtering channel is not in contact with a concentrated solution in standing and cooling processes, so that the filtering channel is prevented from being plugged by solid (or crystal) matters generated in the standing and cooling processes; thus, separating efficiency and separating quality are greatly improved; the device also can be applied to separating processes of other materials.

The invention provides a method for collecting drones in bees as artificial breeding bait of wasps by using a separator. The method includes the following steps: a queen bee is imprisoned in a captivity queen cage, the cage is put into a prepared beehive, a separation fence plate facing downwards and a plastic bag with an upward opening are put in an uncovered beehive, the opening of the plastic bag is opened, the bees on combs are shaken into the separator, the tail end of the plastic bag is bound by using a cord, and the combs are put in another beehive without a bottom plate; the separationfence plate is turned from the downward direction to the upward direction and is put on an opening of the uncovered beehive, the comb-containing beehive without the bottom plate overlaps the separation fence plate, the queen bee is put back into the beehive, the beehive is covered with a beehive cover, worker bees pass through the fence plate to return to the queen bee comb beehive, the drones cannot pass through the fence plate and are left in the collector, the beehive having the queen bee is moved away from the uncovered beehive, and a beehive bottom plate is put onto the queen bee comb beehive; and the drones collected in the collector are taken out and are put into a freezer to be frozen for 2-4 h, so that the drones become the natural bait for artificial breeding of the wasps. Through the method, bee colonies can concentrate on collecting more honey, and the honey production can be improved.

The invention discloses a gyromagnetic electrolyzed water treatment device which comprises a metal outer barrel body, wherein the upper end and the lower end of the metal outer barrel body are provided with an insulator and a ring-shaped high-energy magnet which are sealed with the inner wall of the barrel body; a metal inner barrel body is positioned on the center of the metal outer barrel body, the upper end of the metal inner barrel body passes through an upper insulator, the top of the metal inner barrel body is provided with a gas exhaust tube and a regulating valve; the lower end of the metal inner barrel passes through the insulator, the bottom end of the metal inner barrel is provided with a water outlet tube and a regulating valve; the positive electrode and the negative electrode of a direct-current power supply are separately connected with the metal inner barrel body and the metal outer barrel body; the metal inner barrel body, the metal outer barrel body and the ring-shaped high-energy magnet are sealed and insulated by the insulator; an isolating ring is arranged between the metal inner barrel body and the metal outer barrel; the isolating ring is integrated with the insulator; gas generator by electrolysis on the metal inner barrel body and the metal outer barrel body is separated. According to the gyromagnetic electrolyzed water treatment device, water forms downwards rotational-flow cutting magnetic lines of force in a ring-shaped space of the metal inner barrel body and the metal outer barrel body by virtue of certain flow speed along a water inlet tube; under the action of magnetic fields and electric fields, quick separation of positive and negative ions of water is realized, so that water purifying is realized. The gyromagnetic electrolyzed water treatment device is simple and reliable in structure, is low in energy consumption, is advanced in technology, can be applied to seawater desalting, sewage treatment and drinking water purification.

The invention relates to the technical field of chemical analysis, in particular to a method for separating and determining the content of optical isomers in tartaric acid. The invention provides a method for separating and determining the content of optical isomers in tartaric acid, which is carried out by using high performance liquid chromatography, and the analysis conditions are as follows: an amylose-tri [3, 5-dimethyl carbamate] derivative is used as a stationary phase; and L-tartaric acid and D-tartaric acid can be simply and quickly separated very well by taking n-hexane, isopropanol, tert-butyl alcohol and trifluoroacetic acid as mobile phases and performing isocratic elution, and the contents of the L-tartaric acid and the D-tartaric acid are measured.

The invention provides a natural gas oil-water separation device and a separation method thereof, which belong to the field of natural gas development equipment. According to the technical scheme, the oil-water separation device comprises an oil-water separation tank body and a pre-filtering mechanism arranged at the top of the oil-water separation tank body, and further comprises an oil residue treatment mechanism arranged on the side face of the oil-water separation tank body, the oil-water separation tank body comprises a tank body and a top cover, and the pre-filtering mechanism is arranged in the top cover and comprises an oil residue filtering plate obliquely arranged in the top cover; the lower side of the oil residue filtering plate is provided with a U-shaped material leakage opening, a material guide groove is formed below the U-shaped material leakage opening, the top of the top cover is provided with an oil residue filtering plate cleaning assembly, the oil residue treatment mechanism comprises a treatment cylinder arranged on the side face of the top cover, and a filtering cylinder is arranged in the treatment cylinder. The oil-water separation device has the beneficial effects that oil-water separation can be efficiently and quickly carried out, meanwhile, a large amount of oil and water carried in oil residues can be efficiently separated, and a large amount of resources are saved.

The invention provides a method for concentrating a radioactive solution by using a carbon-based magnetic nano composite material, and relates to the technical field of separation, purification and concentration. The method provided by the invention comprises the following steps: mixing a carbon-based magnetic nano composite material with a radioactive solution, and performing adsorbing to obtaina first mixed solution, wherein radioactive elements in the radioactive solution are one or more of manganese, strontium and cobalt; carrying out standing or magnetic separation on the first mixed solution, and removing part of the supernatant to obtain a primary concentrated solution; mixing the preliminary concentrated solution with high-valence aluminum ions, and performing desorbing to obtaina second mixed solution; and carrying out solid-liquid separation on the second mixed solution, and removing solid materials to obtain a concentrated solution. The method provided by the invention canrealize rapid and efficient adsorption removal and desorption purification separation of the radioactive elements (manganese, strontium and cobalt), concentrates the solution from low concentration to high concentration, and has good application prospects in the aspects of separation, purification and concentration.

The invention provides a liquid-liquid extraction separation device and a use method thereof. The liquid-liquid extraction separation device comprises an inner shell, the upper part of the inner shell is externally connected with a liquid inlet pipe, the liquid inlet pipe rotates around a connecting point of the liquid inlet pipe and the inner shell, and at least one static mixing piece is arranged in the liquid inlet pipe. The use method comprises the following steps: introducing an extracting agent and a to-be-extracted liquid into the liquid inlet pipe, fully conducting mixing to cause interphase mass transfer when the mixture passes through the static mixing piece, then injecting the mixture into the inner shell along a preset direction, and forming a rotational flow in the inner shell to complete extraction so as to obtain an extraction liquid and a raffinate. The device is simple in structure and small in occupied area, has extraction and separation functions, and can realize phase transfer and phase separation in the same equipment.

The invention discloses a high-efficiency sorting device for soybean meal feed pellet feed, which includes a housing, the bottom inner wall of the housing is fixed with a first material receiving box by screws, and the bottom inner wall of the first material receiving box is fixed by screws There is a second material receiving box, the bottom inner wall of the second material receiving box is fixed with a third material receiving box by screws, and the top outer wall of the third material receiving box is provided with a drive motor installation groove, and the inner wall of the drive motor installation groove The drive motor is fixed by screws, the top of one side of the outer wall of the third receiving box is sleeved with a support plate, and the bottom outer wall of the support plate is fixed to the outer wall of one end of the output shaft of the drive motor by screws. The present invention can realize the first sorting through the cooperation of the vibrating motor and the blower, multiple sorting through the first sorting plate, the second sorting plate, and the third sorting plate, and can quickly and efficiently separate pellet feeds of different sizes Separated to facilitate the use in different farms.

The invention belongs to the technical field of petroleum microorganism and particularly relates to a biological surfactant bacterial strain production CTAB screening method. The biological surfactantbacterial strain production CTAB screening method comprises the following steps of (1) sampling including selecting bacteria-containing water samples; (2) enrichment culture including mixing biological surfactant production activator with the bacteria-containing water samples in a sealed mode, performing shake culture to obtain an enriched bacteria solution; (3) CTAB plate separation including diluting the enriched bacteria solution, applying the diluted enriched bacteria solution onto a CTAB-containing plate for culture until dark blue halo-like bacterial colonies are formed onto the CTAB-containing plate, and inoculating single colonies inside the dark blue halo of the CTAB plate into a culture medium for shake culture; (4) strain secondary screening and capability measurement includingscreening out alternative high-yield biological surfactant strains; (5) stability verification to obtain high-yield biological surfactant strains. The biological surfactant bacterial strain production CTAB screening method is high in efficiency.

The invention discloses a high-yield planting method of dendrobium officinale. The high-yield planting method comprises the following steps: 1, providing a greenhouse environment, wherein the greenhouse environment is internally divided into multiple planting regions, a cover part is arranged in each planting region and comprises a lifting mechanism arranged on the ground and a cover body arranged at the top of the lifting mechanism, the cover body is made of a lightproof material, the cover body covers the planting region, where the cover body is placed, under the driving of the lifting mechanism, a shading part is further arranged in the center part of the outer wall of the greenhouse and comprises a scrolling shaft arranged in the center of the outer wall of the greenhouse, black shading cloth wound on the scrolling shaft and a driving mechanism for driving the scrolling shaft to rotate, and the driving mechanism is arranged beside the greenhouse; 2, taking a raw material to prepare a culture medium of the dendrobium officinale; 3, sowing dendrobium officinale seeds into the culture medium, and obtaining dendrobium officinale seedlings through culture; 4, transplanting the dendrobium officinale seedlings into the culture medium of 30 to 40 cm, so as to obtain the dendrobium officinale through culture.

The invention belongs to the technical field of denim processing, and particularly relates to a denim processing system and processing technology. The system comprises a preshrinking finishing machine; cloth joining devices are arranged in front of and behind the preshrinking finishing machine; each cloth joining device comprises a workbench and a controller; linear guide rails are fixedly connected to the two sides of the top of each workbench; a cross beam is fixedly connected between every two linear guide rails; the bottom of each cross beam is fixedly connected with a pair of electric push rods; one end of each electric push rod is fixedly connected with a hook; a clamping spring is connected between every two hooks; round holes are formed in the two ends of each clamping spring; the hooks penetrate through the round holes and are connected with the clamping springs; a groove is formed in the top of each workbench; a clamping groove is formed in each groove; and the clamping springs can be clamped in the clamping grooves. In the prior art, the sewing connection efficiency of guide cloth and grey cloth is relatively low, and the cloth loss is caused; and however, according to the invention, the grey cloth and the guide cloth are conveniently and rapidly connected through the arrangement of the clamping springs and the clamping grooves, and the clamping springs and the clamping grooves are conveniently and rapidly separated, so that the grey cloth and the guide cloth are separated, and the cloth loss is avoided.

The invention discloses an environment-friendly pig raising method. A pig house and a biogas digester are arranged in a pig farm; the pig raising method is characterized in that pig manure generated in the breeding process is collected in a manure tank first, manure pumped out of the manure tank enters a centrifugal pre-separating device, part of liquid manure is separated from the centrifugal pre-separating device and drained into the biogas digester, liquid manure drained from an overflow opening and a liquid outlet of a livestock manure solid-liquid separator is drained into the biogas digester, and solid manure discharged from a solid outlet of the livestock manure solid-liquid separator is used for sale. According to the pig manure processing method, a traditional liquid manure pond is not arranged, the liquid manure out of the pig house is directly separated through the centrifugal pre-separating device and the livestock manure solid-liquid separator, and the solid pig manure can be separated more efficiently and fast; income can be created for the pig farm, the environment is protected, and therefore double purposes are achieved through one effort.

The invention relates to the technical field of chemical analysis technologies, in particular to a method for determining allylamine and impurities thereof. The method for determining the allylamine and the impurities thereof comprises the step of determining the allylamine and the impurities thereof in an allylamine product by utilizing gas chromatography. Wherein the detection conditions are as follows: a chromatographic column is a 5% diphenyl-95% dimethyl polysiloxane capillary chromatographic column; the temperature programming comprises the following steps: keeping the initial temperature at 30-50 DEG C for 2-5 minutes, raising the temperature to 60-80 DEG C at the speed of 2-20 DEG C / min, keeping the temperature for 1-10 minutes, raising the temperature to 200-250 DEG C at the speed of 2-20 DEG C / min, and keeping the temperature for 1-10 minutes. The method is suitable for separation and detection of the allylamine and the six impurities thereof, separation and content detection of the allylamine and the six impurities thereof can be achieved at the same time, and the separation and detection efficiency is improved.