1194results about How to "No energy consumption" patented technology

The fast laser depositing process of preparing antiwear heat resistant composite coating on the surface of crystallizer features that high power laser is first utilized in fast scanning to form transition layer in excellent metallurgical binding with the substrate of crystallizer copper plate on the surface of the plate and then utilized in wide band deposition to form Co base alloy with excellent heat resistance and high wear resistance on the surface of the transition layer. Compared with convenient technological process, the present invention has the advantages of precise control in laser power, position, shape and other parameters, easy automatic control of the whole process, no environmental pollution, high production efficiency, low power consumption, etc. and may be used widely.

The invention relates to a chemical method for in-situ large-area controlled synthesis of a perovskite type CH3NH3PBI3 membrane material based on a lead simple-substance membrane. The method comprises: sputtering the lead simple-substance membrane on the surface of a substrate, then horizontally immersing the substrate material possessing the lead simple-substance membrane in an organic solution containing a simple substance iodine and iodinated methylamine, and performing a constant-temperature reaction to prepare a CH3NH3PBI3 membrane material in situ; or putting the substrate possessing the lead simple-substance membrane in a steam atmosphere of a simple substance iodine to perform iodination to generate a lead iodide membrane, then immersing in an organic solution containing iodinated methylamine, and performing a constant-temperature reaction to prepare the CH3NH3PBI3 membrane material in situ. The method is simple in operation, low in energy consumption and low in cost, and has wide industrial application prospect. The obtained CH3NH3PBI3 membrane is high in purity, uniform in membrane-surface crystal and excellent in crystallinity.

The invention provides hollow fluorescent carbon quantum dots as well as a preparation method and application thereof and belongs to the technical field of light-emitting nano materials. The preparation method comprises the following steps: adding ethanediamine and concentrated acid into water soluble saccharides serving as a carbon source, so as to obtain a puce viscous material; after reaction stops, naturally cooling a glass container, adding a certain amount of secondary water, stirring for dissolving to obtain a dark brown solution, and dialyzing to remove impurities, thereby obtaining a hollow carbon quantum dot aqueous solution; and freeze-drying to obtain the hollow carbon quantum dots. The preparation method is simple in process, wide in raw material source, low in price, low in preparation condition requirement, and free from energy consumption; the obtained hollow carbon quantum dots are relatively high in yield, small in particle diameter and uniform in size; the preparation method is capable of realizing batch production; the obtained hollow carbon quantum dots can be used for anticancer drug carriers, are capable of reducing the toxic and side effects of anticancer drugs and also can be used in detection of VI ions in water.

The present invention discloses a photovoltaic rapid turn-off device and a photovoltaic system. The device comprises a first switch, a second switch, a bypass diode, an auxiliary source, a control circuit and a communication circuit. One of the photovoltaic assemblies is taken as a power supply photovoltaic assembly, and the output end of the power supply photovoltaic assembly is connected with the input end of the auxiliary source; the first switch is connected in series between the power supply photovoltaic assembly and a photovoltaic assembly adjacent to the power supply photovoltaic assembly; two ends of the second switch are respectively connected with the output anode and the output cathode after the photovoltaic assemblies are connected in series; the cathode of the bypass diode is connected with the low-voltage end of the photovoltaic assembly adjacent to the power supply photovoltaic assembly, and the anode of the bypass diode is connected with the low-voltage end of the power supply photovoltaic assembly; the communication circuit is configured to receive the turn-off instruction sent by the outside and send the turn-off instruction to the control circuit; and the control circuit is configured to control the disconnection of the first switch and the connection of the second switch when receiving the turn-off instruction. The photovoltaic rapid turn-off device and the photovoltaic system can reduce the cost, decrease the energy consumption and improve the generating efficiency.

The invention discloses a urine separation and collection device, which comprises a urine collection pool arranged on a drain pipe on the bottom of a urinal, wherein an alarming device is arranged in the urine collection pool, the side face of the urine collection pool is connected with the drain pipe through an overflow pipe, a small-flow liquid guide pipe is arranged above the urine collection pool, a valve is arranged on the small-flow liquid guide pipe, and the small-flow liquid guide pipe is further arranged on the drain pipe; a connecting funnel is arranged on the inlet end of the small-flow liquid guide pipe, a bundling funnel is arranged above the collecting funnel, and a filter screen is arranged avove the bundling funnel. The urine separation and collection device has the advantages of simple structure, convenience in assembly, simplicity in maintenance, long service life, and greatly lower production cost compared with current similar products; and the device is environment-friendly and hygienic, the problems of strong odor, poor environmental and hygienic condition and the like caused by a primitive urine collection method are prevented, the separate and sealing type collection of urine enables pollution of flushing water to be low, and subsequent purification treatment and circulated recycling are facilitated.

The wick-type garden rain water collector consists of five parts including rain water collecting funnel to collecting surface water, filtering net to filter out impurity, movable inlet tongue to avoid evaporation loss of water, water collecting bottle to store water rain and wick type watering pipe to irrigate trees through permeation. The wick-type garden rain water collector may be used widely to irrigate trees durably and fight drought effectively.

The invention discloses a proton therapy system based on a compact superconducting cyclotron. The proton therapy system includes a superconducting cyclotron system, an energy selection system and a beam transportation system, a fixed treatment room subsystem and a rotary frame treatment subsystem; the fixed energy proton beam led out by the superconducting cyclotron in the superconducting cyclotron system can be a continuously adjusting proton beam of 70-200MeV via the energy selection system, so that the longitudinal adjustment of the range during the proton therapy of tumors can be met; thebeam is transmitted to the fixed treatment room subsystem and the rotary frame treatment subsystem via the beam transportation system; the superconducting cyclotron system, the energy selection system, the beam transportation system and a treatment head are subjected to cooperative control to realize the transverse expansion of the proton beam, so that the intensity modulation treatment of the tumor can be completed. According to the invention, the innovation is good, the practicability is high, the beam intensity of the superconducting cyclotron is adjustable, and the intensity modulation treatment can be realized; and the system has an extremely important promotion effect on the accuracy, effectiveness and high efficiency of tumor treatment of a patient.

The invention discloses a double-layer artificial wetland system for strengthening sewage denitrification and dephosphorization and an operation method thereof. The system comprises an upper layer of wetland, a lower layer of wetland, a water inlet and distribution system and an effluent collection system, wherein the upper layer of the wetland is filled with mineral filler, and the lower layer of the wetland is filled with biologic filler which is favorable for microorganisms to adhere to grow; the water inlet and distribution system is divided into to two branches, wherein one branch is distributed above the upper layer of the wetland, and the other branch is distributed on the interface of the upper layer of the wetland and the lower layer of the wetland; and the effluent collection system is distributed on the bottom of the lower layer of the wetland. The method comprises: waterfall aeration is carried out on sewage by one branch of the distribution system, then the sewage falls into the upper layer of the wetland to remove organic matters, ammonia nitrogen, phosphorus and the like to vertically seep into the lower layer of the wetland; in order to supplement a carbon source, a small strand of sewage is introduced into the lower layer of the wetland by the other branch of the distribution system to be mixed with the sewage seeped from the upper layer of the wetland for denitrification; and water is discharged from the effluent collection device after being processed. The invention occupies small area, has small possibility of being blocked and has favorable denitrification and dephosphorization effects and low investment operation cost.

The invention discloses a multifunctional true triaxial rock creepmeter, comprising a base, a test piece mounting base arranged on the base, two groups of horizontal direction stress loading systems with the same structure, a vertical direction stress loading system and a creep data measuring system. The multifunctional true triaxial rock creepmeter disclosed by the invention can carry out a single-axis pulling and pressing creep test and also can carry out a true triaxial compression, pulling and pressing combined creep and unloading-creep test which simulates three-dimensional stress state and loading and unloading stress path of a natural geological rock mass and an engineering rock mass and maintain tension stress states in one or two directions unloaded to the rock; and test function is more comprehensive, practicability is stronger, and a pulling and pressing combined creep and stable pressing and pulling stress conversion unloading-creep test is realized; a pull pressure loading system can provide a pressure which is high enough to meet creep test requirements of most rock materials, and a long-term constant load can be provided; and the multifunctional true triaxial rock creepmeter disclosed by the invention has the characteristics of having a simpler structure, hardly consuming energy source in a test process and having low test cost.

The invention discloses a single-shaft pulling-pressing double-function creepmeter, which comprises a working platform, a pulling-pressing force loading system and a creep data measuring system. The working platform comprises a base, a first support rod assembly, a second support rod assembly, a press bearing plate, a pulling bearing plate, a working plate and a loading plate. The pulling-pressing force loading system comprises an oil drainage oil cylinder, a large-diameter oil cylinder and a small-diameter cylinder and further comprises a pulley weight loading device. The creep data measuring system comprises a strain sensor, a data collector and a microcomputer. The single-shaft pulling-pressing double-function creepmeter can be used for conducting both compression creep experiments andpulling creep experiments. The pulling-pressing force loading system can amplify weight loading load through a pulley block, and pressure can be amplified after being transferred to the large-diameter oil cylinder from the small-diameter oil cylinder, so that the loading force can meet requirements of a large mount of rocks for creep experiments. Simultaneously, the loading load is convenient to adjust and capable of maintaining constant for a long time. The creepmeter is high in measuring accuracy, low in manufacture cost and low in experiment cost due to the fact that the creepmeter consumes no electric energy in the experiment process.

The invention discloses a process and a device for generating power by pressure energy of a small natural gas pipeline network. A high-pressure pipeline network of the device is connected with a gas inlet of an expansion machine through a pipeline; a gas outlet of the expansion machine is connected with a gas inlet of a temperature balancer through a pipeline; an outlet of the temperature balancer is connected with a low and medium-pressure gas pipeline network through a pipeline; a main shaft of the expansion machine is connected with a gearbox; the gearbox is connected with a power generator; the power generator is connected with a transformer synchronizer; the expansion machine adopts an improved AT15-65 type gas expansion machine; one end of the main shaft is connected with an air cylinder in a totally-closed way; a first seal ring and a second seal ring, which have sealing effects, are arranged between the other end of the main shaft and a wheel drum; a flow guide pipe is arranged in a closed cavity between the two seal rings; the flow guide pipe is connected with an inert gas bottle. The device can be used for continuously and stably providing a 220 V / 380 V stable power supply for an interruptible and closed 1-5 kW low-power user.

The invention provides a chemical method for synthesizing flaky CuxSy nanocrystalline optoelectronic film controllably at a low temperature. The method comprises the following steps: firstly adding sulfur powder in a container, secondly adding organic solvent N,N-dimethylformamide or absolute alcohol, wherein the volume of organic solvent is more than a half of the capacity of the container; standing at 0-60 DEG C for 1h to ensure that the sulfur powder dissolved in organic solvent is saturated, horizontally placing substrate material with a new and clean metal copper surface on the bottom of the container to avoid directly contacting with sulfur powder, reacting at 0-60 DEG C for 5-24h, cleaning the product with absolute alcohol, drying at room temperature to in-situ prepare the big area film material composed of flaky CuxSy nanocrystalline on the metal copper surface of the substrate material, wherein x:y=1-2. The method of the invention adopts low temperature, has low energy consumption, is simple, green and environmentally friendly and particularly applicable to large-area industrial production, and does not use any template, add any surfactant and perform complicated post-processing operations such as purification.

The invention discloses a full-automatic multichannel air passage switching atmospheric sampling device which can be widely applied to various atmospheric sampling systems. The full-automatic multichannel air passage switching atmospheric sampling device comprises an atmospheric sampler (1), a closed multichannel air passage switching device (4) and a control unit (5). The full-automatic multichannel air passage switching atmospheric sampling device can be widely applied to the field of detection of environmental gas. According to the working requirement, the communication or closing of each channel can be controlled in the sampling process of the atmospheric sampling device by switching the air passages, so that the collection time and sequence of all sampling passages can be controlled; and the full-automatic multichannel air passage switching atmospheric sampling device has the advantages of small volume, low energy consumption and the like.

The invention discloses a special cement-base patching material and a corresponding cement concrete pavement quick repairing method built according to the special cement-base patching material. The patching material is prepared from the following ingredients in specific weight parts: magnesium phosphate cement, sulphate aluminum cement, early strength agents, water reducing agents, redispersible emulsion powder, pulverized fuel ash, silicon carbide, fine sand powder, detritus, carbon fiber and water-solubility polyurethane. The special cement-base patching material has the advantages that the mechanical performance, the anti-abrasion performance, the waterproof anti-permeability performance, the durability performance and the like meet application requirements; required construction equipment is simple; the construction process is simple and convenient; the influence of weather on construction is little; the construction can be performed at normal temperature and in rainy and snowy weather; the maintenance time is short; the traffics can be fast opened; the influence on the traffics is little; good social benefits and social benefits are realized; the engineering application prospects are wide.

The invention relates to the fields of environmental engineering and ecological engineering. An ecological check dam prevention and control system for three gorges reservoir region hilly land ravine agricultural non-point source pollution is characterized in that multiple levels of ecological check dams are in trapezoidal distribution with natural fall from high to low along with the hilly land; each level of ecological check dam consists of a water storage regulating pond, a constructed wetland and a check dam main body, which are arranged sequentially according to the water flow direction; the water storage regulating pond is communicated with an overflow port in the previous level of the check dam main body. The system can effectively intercept and control the hilly land ravine agricultural non-point source pollution of the drainage basin, can reduce water and soil loss, can perform water-harvest irrigation, can reduce attenuation of channel nutrients before and after rainfall on sloping fields, and can realize ecological interception of agricultural non-point source pollutants.

The invention discloses an industrial mechanical arm. The industrial mechanical arm comprises a rack, an adjusting mechanism, a grabbing mechanism and a plurality of connecting pieces; the rack comprises a vertical column and a cross rod; the adjusting mechanism comprises a horizontally arranged base, a first rod body rotationally connected with the base, a first sleeve rotationally arranged outside the first rod body in a sleeving manner, two telescopic rods symmetrically fixed to the lower portion of the first sleeve, a first disk fixedly connected with the lower ends of the two telescopic rods and a second sleeve fixedly connected with the lower surface of the first disk; the grabbing mechanism comprises a barrel body arranged in the second sleeve in a sleeved manner, a compression spring, a second disk, two second rod bodies and a plurality of jaw bodies; and the jaw bodies are movably connected to the peripheral face of the barrel body through the connecting pieces. The industrial mechanical arm can rotate at a plurality of angles and automatically lock and keep the firm grabbing state of the jaw bodies, and is simple in structure, flexible to rotate and capable of completing the construction operation of a complicated environment.

The invention discloses an initial stage rain water flow discharging device which is mainly composed of an impoundment chamber, a flow discharging partition, a flow discharging water communicating pipe, a water flow control mechanism, a flow discharging front chamber, a flow discharging rear chamber, a shunting downflow weir, a shunting flow conduction chamber, a delayed automatic draining mechanism and the like. Compared with the prior art, the device of the invention can effectively separate severely polluted initial stage rain water from later stage clean rain water, has the advantages of optimized structure, compact structure, high space utilization ration, space occupation saving, no energy consumption, no need of staff operation, high automation degree, convenient management and thelike.

The invention discloses a heat pipe cooling system for a server cabinet. The heat pipe cooling system for the server cabinet comprises a first heat exchanger, a connecting pipeline and a second heat exchanger, wherein the first heat exchanger is arranged at a grid of at least one out of a front cabinet plate, a rear cabinet plate, a left cabinet plate and a right cabinet plate of the server cabinet, faces towards a hot air outlet and consists of a plurality of groups of heat pipes; the heat pipes are filled with refrigerant working media; the connecting pipeline is arranged between the first heat exchanger and the second heat exchanger; the refrigerant working media are subjected to circular evaporation-condensation gas-liquid phase transition between the first heat exchanger and the second heat exchanger through the connecting pipeline, so as to bring heat from the first heat exchanger to the second heat exchanger; and the second heat exchanger is arranged far away from the server cabinet, and exchanges the heat with an outside cooling system. According to the heat pipe cooling system for the server cabinet, the first heat exchanger for cooling a server is arranged at the grid of the cabinet plate of the server cabinet, so that the space of a server room is saved; and the first heat exchanger faces towards a hot air object directly for cooling, and the efficiency is improved.

A thermoelectric power generation device based on radiation refrigeration and efficient absorption of solar energy includes a carbon nanoparticle film, a semiconductor thermoelectric power generationsheet assembly, a radiation cooling film, supporting pillars arranged under the semiconductor thermoelectric power generation sheet assembly, and a reflective concentrator reflecting sunlight to the lower surface of the carbon nanoparticle film. The semiconductor thermoelectric power generation sheet assembly includes an upper insulating heat conduction plate I, a semiconductor thermoelectric device and a lower insulating heat conduction plate II arranged in turn from top to bottom. A load and a data collector are connected in turn between the two ends of the semiconductor thermoelectric device. The radiation cooling film is attached to the upper surface of the upper insulating heat conduction plate I, and the carbon nanoparticle film is attached to the lower surface of the lower insulating heat conduction plate II. The radiation refrigeration end of the device can achieve lower temperature by radiation heat exchange with outer space, and the temperature can be 10 more degrees lower than the ambient temperature, so that a large temperature difference and a high voltage are formed at the two ends of the semiconductor thermoelectric device, and the problem of less heat exchange between the traditional heat sink and the environment per unit time is solved.

The invention provides an independent primary air system provided with a heat pipe exchanger. The independent primary air system is characterized by comprising a precooling unit, a cooling dehumidification unit, a reheating unit and an air supply unit. The precooling unit, the cooling dehumidification unit, the reheating unit and the air supply unit are sequentially arranged between an inlet and an outlet of the primary air system; the air supply system is arranged on the outlet of the primary air system. Primary air is precooled through an evaporator side of the heat pipe exchanger; the preprocessed primary air is cooled again through the cooling dehumidification unit; the primary air is bent through an air pipe and then heated again through a condenser side of the heat pipe exchanger; the processed air is sent indoors through the air supply unit, and indoor temperature and humidity are controlled to be 26 DEG C + / -0.5 DEG C and 50%+ / -1%. The heat pipe exchanger of the independent primary air system achieves heat recovery in the precooling unit and the reheating unit, heat exchange efficiency is high, extra energy loss is avoided, and discharged heat can be recovered to the maximum; indoor air quality is improved; finally an air-conditioning system can save energy by 6%-9%.

The invention provides a solar optothermal coupled high-temperature water electrolysis hydrogen production system. The system comprises a heat energy supply module, a hydrogen production and separation module and a storage module which are sequentially connected; the heat energy supply module comprises a condensation device, a heat collection device, a heat storage high-temperature heat pipe heat exchanger and a heat exchanger unit which are sequentially connected, and hydrogen and hydrogen are separated through electrolysis after a water and hydrogen mixture in the hydrogen production and separation module is heated into a steam and hydrogen mixture above 800 DEG C. Compared with the prior art, the hydrogen production system has the advantages that fossil energy does not need to be consumed, the productive process is more green and environmentally friendly, and the power consumption is greatly reduced; a stable heat source is provided through the system, the problem that a photo-thermal system is not stable due to changes in the weather is solved, the availability of the system is improved, and meanwhile the electrolytic efficiency of the system is improved.

The invention belongs to the barcode technical field and particularly relates to a high-capacity two-dimensional barcode capable of recording voice message and a reader. The two-dimensional barcode consists of graphic matrix codes with the variable quantity, the width of the barcode is the four graphic matrixes regularly, and the length thereof is of the graphic matrix codes with uncertain quantity, so as to form the rectangular shape; each graphic matrix code is composed of a locating point, a correction point and an information area; and the information area comprises an identification area for storing identification information and a data area for storing user data. The two-dimensional barcode can be printed on a piece of common paper in black and white and can record the voice message, and the capacity of the barcode can be changed freely within thousands of words according to the voice message. Based on the invention, a novel voice message access technology and a novel talking book technology can be formed, so that the talking book technology can be realized completely in a form of paper medium, thereby having obvious meaning in the aspects of cost, volume, energy consumption, environmental protection and the like.

The invention relates to a composite constructed wetland used for low pollution water purification treatment of farmlands and villages. The composite constructed wetland comprises a floating plant stabilization pond, a submerged plant oxidation pond and an emergent aquatic plant / hygrophyte ecology gravel bed which are orderly set along a water flow direction, wherein the floating plant stabilization pond is planted with floating plants, the submerged plant oxidation pond is planted submerged plants, and the emergent aquatic plant / hygrophyte ecology gravel bed is planted with emergent aquatic plants / hygrophytes. The composite constructed wetland adopts an ecological engineering processing method, and the operation cost of the composite constructed wetland is low; the total nitrogen removal rate and the total phosphorus removal rate of the low pollution water of farmlands and villages can reach more than 50% and more than 60%. In the composite constructed wetland, the floating plates, the submerged plants, and the emergent aquatic plants / hygrophytes planted in the floating plant stabilization pond, the submerged plant oxidation pond and the emergent aquatic plant / hygrophyte ecology gravel bed are aquatic economic plants which are capable of generating economic benefits and are easy to popularize in rural areas.

The invention discloses a worker-finding-by-cargo management method for e-commerce automatic storage and distribution, and belongs to the field of storage logistics. The method comprises the steps ofdetecting whether an operation box is qualified or not, wherein two RFID tags and an electronic lock with Bluetooth or RFID are arranged on the operation box; if the operation box is qualified, not opening the box and directly conveying the box to a storage area; receiving and confirming a cargo list, wherein the same type of cargos are in the operation box, and the cargo list comprises all cargoidentifiers, or the cargo identifiers and a cargo quantity; determining an RFID tag number of a target cargo operation box according to cargo types in an online purchased cargo order; searching for the target cargo operation box according to the RFID tag number of the target cargo operation box; conveying the target cargo operation box to a corresponding mechanical hand or a manual operation station, and taking out the order cargos from the target cargo operation box by the adaptive mechanical hand or a worker, and performing code reading and recording; and checking and packaging all the cargos of the order. The problems of low distribution efficiency of manual cargo finding and serious waste of outer packages at present are solved.

The invention relates to a bacterial-algal symbiotic system and a short time contact oxidation integrated sewage treatment method comprising the following steps: 1. the sewage which flows into a sedimentation zone by an inlet pipe is conducted sedimentation and clarification treatment; 2. the sewage after primary clarification flows through the bacterial-algal symbiotic system formed by a grid and a multi-surface hollow vector on which fixed surface biofilms and bacteria-algae are adsorbed from below to above; 3. the effluent from the bacterial-algal symbiotic system is conducted aerobic degradation in an aeration contact oxidation pond, the oxygenated water is partially returned to the inlet pipe through a stripping tube; 4. the effluent from the contact oxidation zone flows into the sedimentation zone through a diversion deaeration tube, the clarified effluent is discharged by an outlet tube. The method of the invention has advantages of low energy consumption and investment, small land occupation and lower running cost, and is easy to realize the scale production and application of the equipment.

The invention relates to the technical field of water purification and water pollution prevention and treatment and particularly discloses a filling material used for removing a permeable reactive barrier of nitrate and a preparation method of the filling material. The filling material used for removing the permeable reactive barrier of the nitrate comprises the raw materials of pretreated iron powder, activated carbon and coarse sand, wherein the volume ratio of the pretreated iron powder to the activated carbon to the coarse sand is 3:1:6. The filling material has the advantages that the filling material used for removing the permeable reactive barrier of the nitrate, which is prepared by adopting the proportion and the preparation method, is low in cost and simple to prepare, is used for the remediation and treatment of nitrate pollution of a high-concentration nitrate pollution area and has an obvious demonstration effect on treating the nitrate pollution in underground water; the treatment steps are reduced, the treatment cost is lowered, the underground resources are sufficiently utilized, the good ecological environment of the underground water is restored, and economic loss caused by water source area pollution is effectively reduced, so the filling material used for removing the permeable reactive barrier of the nitrate has a good economic benefit.

The invention discloses a faucet water purifier. The faucet water purifier comprises a faucet connecting body and a water purifier body, wherein the faucet connecting body can be connected with a to-be-purified water intake opening; a filtering assembly is arranged in the water purifier body; the water purifier body is communicated with the faucet connecting body; to-be-purified water is led intothe water purifier body by the faucet connecting body; the filtering assembly in the water purifier body is used for purifying the to-be-purified water, and then the purified water is drained out. Thefaucet water purifier has the advantages that multiple filtering functions are realized, multiple impurities in a running water body can be filtered and removed, and the safety in water utilization is guaranteed; the faucet water purifier can run at the pressure of running water, the power consumption is avoided, and the energy consumption is low; a filter element structure of the faucet water purifier can be detached, the failed filter element can be regenerated and replaced, and the replacing frequency of the filter element is effectively reduced.

The invention relates to a breeding method for Laiwu pigs. The breeding method comprises the following steps of S1, pig farm site selection; S2, pig farm sterilization before breeding; S3, piglet breeding; S4, sexual maturity period; S5, pregnancy period; S6, labor period; S7, suckling period; S8, disease control. The breeding method has the beneficial effects that the breeding method for the Laiwu pigs is safe and reliable, a natural nuisanceless breeding method is adopted, and the production regularity of the Laiwu pigs is followed, so that the vitality is enhanced, the yield is increased, and a wide market prospect is obtained for popularizing a black pig breeding method.

The invention provides a portable solid phase extracting device which comprises a support (4), a solid phase extracting column (3) and a segmented air pressurizer (2), wherein the upper part of the support (4) is provided with a panel; the panel is a solid phase extraction column baffle plate (1) which is provided with a plurality of first through holes; the solid phase extracting column (3) is a through pipe which is filled with absorbent fillers; the top end of the through pipe is provided with an outer edge; through the outer edge, the solid extracting column (3) is arranged in the first through holes in a suspended manner; the segmented air pressurizer (2) is positioned above the solid phase extracting column (3), and comprises an air cylinder (10) and a piston push rod (9); the air cylinder (10) is sleeved out of the piston push rod (9) in a penetrating manner, the bottom outer diameter of the piston push rod (9) is matched with the inner diameter of the top end of the solid extraction cylinder (3); and the piston push rod (9) is sleeved on the solid phase extraction column (3) in the penetrating manner. The portable solid phase extracting device is simple and convenient to use, low in cost, free from energy consumption, and safe and environment-friendly.