113results about How to "Improve sampling success rate" patented technology

The invention relates to a soft cloth subsealing type shallow water undisturbed surface sediment sampler comprising a sampling sleeve, a sampling mechanism and a sampling liner. The soft cloth subsealing type shallow water undisturbed surface sediment sampler is characterized in that the sampling sleeve comprises a sampling drill bit, a sampling cylinder, an outer counterweight deckle board, an upper cover plate and a hard connecting rod; the sampling mechanism comprises a lifting rope, a lifting rod, a lifting rod fixing frame, a side face connecting shaft, a side face connecting shaft baffle, a cable wire, a pulley, a slide rail of side face connecting shaft, a bottom connecting shaft, soft waterproof subsealing cloth, a spring bolt and a fixing mechanism of soft waterproof subsealing cloth; and the sampling liner comprises a sampling liner outline border, a sampling liner soleplate and a sampling liner soleplate inserting mechanism. The soft cloth subsealing type shallow water undisturbed surface sediment sampler disclosed by the invention has the advantages of large sampling area, high sampling success rate, non-damage on physical structure and sequence structure of surface sediment, and the like, and the sampler is capable of meeting collecting demand of shallow water surface sediments and is particularly suitable for collecting surface sediment samples within 3m water depth.

The invention discloses a soil sampler and a sampling method thereof. The soil sampler comprises an outer tube, a plurality of flaps, an inner tube, a muddy-water discharge hole and a sampling tube and is characterized in that the top end of the outer tube is provided with a muddy-water discharge hole and a rubber plug; the flaps are connected to the lower end of the outer tube through hinges; thelower end of the inner tube is provided with a plurality of openings matched with flaps, and the upper end of the inner tube is provided with the muddy-water discharge hole. During sampling, the relative position of the outer tube and the inner tube is fixed to allow the flaps to be in an open state, the position of the inner tube is fixed after the soil sampler penetrates a target soil layer, the outer tube is moved downwards until the flaps are closed and the muddy-water discharge hole of the inner tube is sealed, and the relative position of the outer tube and the inner tube is fixed and the soil sampler is pulled out to take out a soil sample. The soil sampler has the advantages that soil sample disturbance caused by the sealing adsorption principle of a traditional soil sampler can be avoided, the sampling success rate of soil such as floury soil which is low in water content and viscosity, and the original state of the soil sample is guaranteed.

The invention relates to the technical field of seabed abyss organism sampling, in particular to a seabed abyss macro organism trapping and gastight sampling device. The device comprises a sampling cylinder, an energy accumulator and a ball valve; the sampling cylinder is placed in the support seat; the inlet end is provided with an opening and is connected with the ball valve through a flange; the outlet end is opened and is connected with the energy accumulator through a capillary; the energy accumulator is fixed arranged on an energy accumulator fixing frame, and the accumulator accumulatoris provided with an energy accumulator inflation valve; the inlet end of the sampling cylinder is provided with a correlation-type infrared photoelectric organism detector; the ball valve comprises avalve body and a valve rod, a part of the valve body is placed in a support seat, and the valve body is provided with a hole having a same size as the opening of the inlet end of the sampling cylinder; the lower end of the valve rod is connected with a keyway at the top of the valve body, and the upper end of the valve rod is connected with a keyway of a turbine; the turbine is meshed with a worm, and the end of the worm is connected with a motor shaft. The device provided by the invention can be used to complete gastight sampling, and the pressure of obtained biological samples is substantially maintained to be an in-situ pressure, so that the survival rate of organisms is greatly improved.

The invention discloses a lacustrine core sampling device for sediments in lakes with different depths. The lacustrine core sampling device comprises a handle rod, a drilling rod and a rotary core capturing device which are sequentially fixedly connected from top to bottom, wherein the rotary core capturing device comprises a sample pipe and a rotary blade, a sample pipe body is a semicircular groove body, a connecting rod connected with the drilling rod is arranged at the top end of the semicircular groove body, a drill bit is fixedly arranged on the outer side surface of the bottom end of the semicircular groove body, and two ends of the rotary blade are respectively rotatably connected to the top end and the bottom end of the semicircular groove body. According to the lacustrine core sampling device, the defect of an existing mechanical sediment sampler is overcome, the sampling success rate and the sample integrity are increased, lacustrine cores of water bodies and marshes in different depths are sampled through the arrangement of prolongable drilling rod and a hammer, the dismantling link is greatly simplified, the time is effectively saved, and the demand on research is also met.

The invention relates to a laser chip failure positioning analysis sample preparation method and a middleware. According to the method, the middleware and a heat sink are taken down together, foot pads for protection are bonded to the periphery of a chip, the heat sink is removed through a grinding method, and a gold layer at a substrate is removed through continuous grinding until the chip substrate is fully exposed. The method is suitable for semiconductor laser chips in multiple packaging forms, different material systems such as group IIIV, groups II and VI and silicon-based semiconductorlaser chips, can directly prepare fine and brittle laser chip samples with the scale of hundred microns, is free of precision micro-nano-processing equipment, pays attention to the protection of the samples, and can effectively prevent the damage of the sample during the failed sample taking process or during the sample preparation. Detection points are on the same plane after the sample preparation so that a power-on test is convenient. The method utilizes a cleanable adhesive and a sample can be taken out so that later analysis is promoted.

The invention belongs to the technical field of mechanical test equipment, and relates to a shearing box device for a rock-like material. Upper box moving parts are positioned at two sides of an upper shearing box, and are connected with an upper box top and an upper box bottom respectively; an upper box bottom fixed groove is fixedly formed in the lower side of the upper box bottom; a lower box top fixed groove is fixed in the upper side of a lower box top and corresponds to the upper box bottom fixed groove; lower box top fixed rolling balls are uniformly distributed in the lower box top fixed groove; lower box moving parts are connected with a lower box top and a lower box bottom fixedly and respectively; two lower box direction moving plates are respectively fixed on the upper and lower end parts of different lower box direction fixed plates; a lower box bottom direction plate is combined with a lower box bottom threaded rod; the bottom end of the lower box bottom threaded rod is fixed on the lower box bottom, and the top end of the lower box bottom threaded rod is in contact with the lower box bottom direction plate. The shearing box device for the rock-like material is simple in integral structure principle, is flexible and convenient to use and operate, has a good observation effect, is high in sampling success ratio, is high in adaptability, and ensures high test result accuracy and environment-friendly experiments.

The invention relates to a device and a method for preparing an undisturbed soil sample of a ring cutter. The device comprises a work table, a support column, a soil sample lower backing plate, a force transmission frame, a pressing head, a lever, a spring clip and other common tools for preparing the soil sample, wherein the preparation materials can be steel, aluminum, alloys and the like. By utilizing the device and the method, the original sample of the ring cutter is prepared under a condition that a sample box is not completely opened, so that an opportunity that the soil sample is damaged in the preparation process of the sample is effectively reduced; for soil samples of loess, cracked clays and the like which are easily cracked, the ring cutter sample with high quality can be prepared, and the sample manufacturing success ratio is high and the scrap ratio is low; and for sand soil with low cohesive force, the original sand soil sample can be sampled by a common soil taking device so as to further prepare the undisturbed soil sample of the ring cutter.

The invention relates to a full-automatic negative-pressure suction rotary cutting type biopsy needle. The biopsy needle comprises a piston, a sleeve, a needle core and a needle tube, the piston is embedded in the sleeve, the needle core is fixedly connected with the front end of the piston, the needle tube is detachably connected with the front end of the sleeve, a cavity is formed in the needletube, and the needle core sequentially penetrates through the front end of the sleeve and the cavity of the needle tube; the piston is pushed to the frontmost end of the sleeve, the needle core extends out of the needle tube, and an automatic retraction device is arranged on the piston and the sleeve; the front end of the needle tube is provided with a rotary cutting device used for cutting humanbody tissue, and a retention device used for retention of the human body tissue in the cavity is further arranged in the cavity of the needle tube; an injection pipe communicated with the cavity is arranged on the side wall of the sleeve. The biopsy needle has the advantages that automatic negative-pressure back suction is achieved, the rotary cutting device at a port of the needle tube is used for rotary cutting, and the retention device in the tube is used for obtaining cylindrical specimens; the sampling quantity under the same caliber is more sufficient, the insertion depth can be controlled, and the safety is guaranteed; the tissue specimens and cytology specimens are sampled at the same time, and dual sampling is achieved.

The invention discloses a liquid sampler comprising a tube body with one plugged end. The plugged end of the tube body is provided with a handle; a plugging plate of the plugged end of the tube plateis provided with a liquid outlet; a tube cavity of the tube body is internally provided with an upper normally-closed self-restoring liquid one-way valve and a lower normally-closed self-restoring liquid one-way valve which are arranged at intervals; and both the upper normally-closed self-restoring liquid one-way valve and the lower normally closed self-restoring liquid one-way valve divide the tube cavity into an upper cavity, a middle cavity and a lower cavity. The liquid sampler is a time-saving sampler capable of conveniently and rapidly extracting liquid samples at different depths in awell shaft.

The invention relates to an underground pressure wind spot sampling device. According to the underground pressure wind spot sampling device, a sample collection device is connected with a water converter with a pressure wind connector through a pipe, a double-wall drill pipe connected with the water converter is connected with a drilling machine, and the double-wall drill pipe is connected with a drilling bit. The underground pressure wind spot sampling device is characterized in that wind outlet inclined holes are formed in the outer wall of the drilling bit, and a wind inlet is formed in the top end of the drilling bit. The invention further discloses an underground pressure wind spot sampling process of the underground pressure wind spot sampling device. According to the underground pressure wind spot sampling device and process, positive-pressure sampling is realized, the drilling bit is provided with an injection pipe with injection inclined holes, and therefore negative-pressure smashed coal sampling is realized; besides, the structure is simple, spot sampling can be realized, the drilling bit does not need to be replaced, sampling is fast, and the quality of samples is high; according to the underground pressure wind spot sampling process, by the adoption of positive-pressure sampling, the influence of wind flow on the resolving speed of the coal samples can be reduced, as a result, coal powder below cuttings at the front end of the drilling bit can continuously and quickly enter the sample collection device through the center of the drill pipe, the sampling success rate is increased, and the determination result is more close to the actuality when the obtained coal samples are used for conducting gas content determination.

A metallurgical slag sampling device and usage thereof belong to the technical field of metallurgy and are useful in online sampling of high-temperature molten metallurgical slag on a production site. The technical scheme of the invention includes: the metallurgical slag sampling device comprises a paper protection sleeve and a glass vacuum sampling core; the vacuum sampling core is mounted in the protective sleeve and fixed via pug; a sampling actuator holds the protective sleeve and extends into slag on the surface of molten steel, after a moment of standing, the slag sampling device is taken out of the slag and cooled, and a slag sample is submitted for inspection after completely solidifying. The invention is innovation on metallurgical slag sampling processes, and the backward situation of present metallurgical slag sampling is changed. The metallurgical slag sampling device and usage thereof of the invention are simple and feasible, a field operation environment and labor intensity of workers are improved effectively, quality stability and sampling success rate of high-temperature slag sampling are improved, online automatic sampling for metallurgical high-temperature slag is achieved, and further increase in the metallurgical automation level is facilitated.

The invention relates to a liquid sampling device and a liquid sampling method. The liquid sampling device comprises a sampling pipe, wherein a top spherical valve and a bottom end spherical valve are arranged on the two ends of the sampling pipe respectively; a spherical core rotary shaft of the bottom end spherical valve is connected with the middle part of a handle of the bottom end spherical valve; the outer side wall of a pipe body is provided with two rows of opposite rope threading guide rails; each row of the rope threading guide rail comprises a plurality of rope threading circular rings which are arranged at intervals; the rope threading circular rings are arrayed in the length direction of the pipe body to form a straight-line-shaped rope threading guide rail which is parallel to the pipe body; the starting end of a steel wire rope is connected with one end of the handle of the bottom end spherical valve and the tail end of the steel wire rope sequentially penetrates through the rope threading circular rings of the two rows of the rope threading guide rails to be connected with the other end of the handle of the bottom end spherical valve. The liquid sampling device provided by the invention is small in volume, simple in structure, wide in applicable range, and accurate and convenient in sampling; in a sampling process, liquids on different layers are not easy to mix, so that the sampling for a full-liquid-level liquid sample can be realized and the sampling for a liquid sample of a fixed layer can also be realized; the sampling is convenient and rapid, and the practicability is strong.

The present invention provides a gastrointestinal sampling capsule includes an enclosure, a sampling port on the enclosure and a sampling module connected to the enclosure. The sampling port includes a plurality of sampling holes, and the sampling module includes a sample chamber and a sampling trigger unit which controls a connection or disconnection between the sampling port and the sample chamber to turn on sampling or turn off sampling. The gastrointestinal sampling capsule further includes a connecting passage arranged between the sample chamber and the sampling port, wherein an inlet of the connecting passage corresponds to the sampling port and an outlet of the connecting passage is connected to the sample chamber. A gap is provided between the plurality of sampling holes and the inlet of the connecting passage, through which the plurality of sampling holes are connected to the connecting passage.

The invention relates to a split combined type sampling bottle for collecting a water sample containing a volatile substance and an oxygen-sensitive substance. The split combined type sampling bottle structurally comprises a bottle body, a bottle cover, a pressing plate and a protection cap, wherein the bottle body is formed by an upper bottle body and a lower bottle body which are in folding threaded connection; an O-shaped sealing ring is arranged at a joint; bottlenecks are respectively formed in the upper bottle body and the lower bottle body. By adoption of an upper and lower split combined structure and an upper-bottleneck and lower-bottleneck structure, the sampling bottle disclosed by the invention can realize a specific sampling mode down water feeding and up air exhausting; in a process of injecting the water sample into the bottle, a water outlet end pipe is not needed to be plugged into the sampling bottle, so that interference caused by manmade factors is avoided, and the fidelity of the sample is improved; in a water sample collection process, the rise speed of the water level in the bottle is steady, and is slowly changed; meanwhile, air in the bottle is exhausted, and the pressing plate is closed until the bottle is full of water and water overflows, so that the redundant water sample is discharged, and no redundant space cannot be retained in the bottle; therefore the single sampling success rate is high, and the working efficiency is improved.

The invention provides a molten steel sampling instrument and a using method thereof. A lifting platform of the sampling instrument is located in a foundation pit in the lateral ground of a steel ladle, a mechanical arm is mounted on the lifting platform through a rotary table, and a steel liquid sampling device and a steel slag sampling box are connected with the mechanical arm through a samplingadapter rod. The using method comprises the steps that the mechanical arm is raised above the ground and unfolded; the sampling adapter rod is installed; the steel liquid sampling device and the steel slag sampling box are installed; a horizontal rotary mechanical arm makes the steel liquid sampling device and the steel slag sampling box located directly above a steel liquid sampling position; the small arm of the mechanical arm is retracted, the big arm of the mechanical arm is horizontal, and the distance between the steel liquid sampling device and the liquid surface of molten steel is measured; the small arm of the mechanical arm stretches downward, so that the steel liquid sampling device stretches into the molten steel to the sampling position to complete steel sampling; the steel slag sampling box moves downward, so that the box cover sinks into a steel slag layer to complete slag sampling; the small arm of the mechanical arm is retracted, so that the steel liquid sampling device and the steel slag sampling box are separated from the liquid surface of molten steel; a steel sample and a slag sample are inspected; the sampling adapter rod is detached, the mechanical arm is folded and lowered into the foundation pit in the ground, and the foundation pit is closed by a cover plate.

The invention discloses a united collection device and method for sediments and plankton in a deep layer and shallow layer transition water area. The united collection device comprises a sediment collecting device body and a plankton net. The sediment collecting device body comprises steel tubes, supports and a solid steel column. The steel tubes are connected with the solid steel column through the supports. The tops of the steel tubes are diagonal planes. The side face of each steel tube is provided with a spring lock catch, the spring lock catches are connected to adjusting steel sheets, and therefore sediments can be collected. The plankton net comprises a net body, a net ring, an adjusting valve and a pull rope. The sediment collection device body and the plankton net are connected through connection rings, so that the united collection device is formed, and collection of two kinds of samples is synchronously completed. The united collection device and method have the advantages that the structure is simple, manufacturing is easy, operating is convenient, interface disturbance is small, the sampling success rate is high, and labor and sampling time are saved. The united collection device and method are suitable for synchronous sampling of sediments and plankton in water areas such as a river, a lake, a reservoir and ocean and particularly suitable for collection of samples of sediments and plankton in a deep layer and shallow layer transition water area.

The invention provides a lateral pushing device for preventing a columnar sampler from toppling and a using method. the device comprises four sets of propellers which are arranged in a cross-shaped symmetrical mode are arranged on the upper surface of the side pushing device, and four sets of pulley telescopic supports are installed in the side pushing device in a cross-shaped symmetrical mode; apropeller control bin, an attitude sensor, a pressure gauge and six sets of rechargeable battery packs are further annularly and fixedly installed in the side pushing device in sequence. According tothe technical scheme of the invention, the dumping posture of the columnar sampler in the underwater sampling process can be effectively corrected, the sampling success rate of an underwater columnarsediment sample is remarkably improved, the balance weight of the sampler and the length of the sampling pipe can be increased as required on the basis, the sampling length requirement of a marine sediment sample is met, and the time and labor cost of a sampling ship is saved. The lateral pushing device is wide in application range, is suitable for upgrading and reconstruction of an existing common columnar sampler with any caliber, has a certain application market, and can reduce development and manufacturing cost.

The invention discloses a gravity type deepwater silt low-disturbance sampling device. A gravity block is mounted at the bottom of a gravity type frame; hanging rings are connected to sampling steel tubes and together with the sampling steel tubes are fixed at a middle position of the gravity type frame; the sampling steel tubes are each provided with a plurality of sampling liner tubes; connection sleeves are each connected with each two sampling steel tubes, and are sealed by sealing strips; the bottom of the sampling steel tubes is connected with a cavity body; the cavity body is internal provided with a sampling bottom-sealing device; a bevel angle steel tube is fixedly connected with the sampling steel tubes through reinforcing steel bars; a sealed steel blade is jacked by a resisting sleeve; the resisting sleeve is stabilized by a rotating rod; the rotating rod is stabilized by tensile force of a rotating rod spring; a fine steel wire passes through a hosepipe and is connected with the rotating rod; a blade spring causes the sealing steel blade to undercut to seal the sampling steel tubes. The gravity type deepwater silt low-disturbance sampling device has the advantages of simple structure, stable impact and high sampling success rate, is slowly put into silt with supplement of an underwater camera system, triggers the sampling bottom-sealing device in a low-disturbance mode, and solves the problems that a conventional gravity type sampler has poor sealing performance, easy disturbance, complex structure and low sampling success rate.

The invention relates to a split combined sampling bottle for collecting water samples containing volatile substances and oxygen-sensitive substances. The structure includes a bottle body, a bottle cap, a pressing plate and a protective cap; The two parts of the bottle body are threadedly connected, an O-shaped sealing ring is arranged at the joint, and bottlenecks are respectively arranged on the upper bottle body and the lower bottle body. The sampling bottle of the present invention adopts an upper and lower split body structure and an upper and lower bottle mouth structure, which can realize the unique sampling mode of "water inlet from the bottom and exhaust from the top". The interference of human factors is avoided, and the fidelity of the sample is improved; during the water sample collection process, the water surface in the bottle rises steadily and changes slowly, and at the same time, the air in the bottle is discharged until the water overflows, the pressure plate is closed, and the excess water sample is discharged , There will be no extra space in the bottle, and the success rate of one-time sampling is high, which improves the work efficiency.

The invention relates to a water sample collection system and method for sampling water from an artesian well. The water sample collection system is characterized in that a well mouth connected sampling device is arranged at the well mouth of the artesian well, the output port of the well mouth connected sampling device is connected with the input port of a self-priming pump through a flexible pipe, the output port of the self-priming pump is connected with a T-joint through a pipeline, an upper port of the T-joint is connected with the input port of a quality stabilizer through a pipeline, the bypass port of the T-joint is connected with a flow splitting control valve, and the output port in the upper end of the quality stabilizer is connected with a split-type combined sampling bottle through a pipeline. The water sample collection system and method for sampling water from the artesian well can realize the quick installation and positioning of artesian well pipes and improve the fastness and convenience of sampling operation; since the water sample and environment-sensitive substances contained in the water sample pass the water sample collection system in a relatively dynamic balance state, the disturbance is small, the precipitated volatile substances are fewer and the fidelity of the sample is improved.

The invention relates to a mother-son drill bit spot sampling device comprising a coring pipe, and the coring pipe comprises an inner cylinder and an outer cylinder; the end portion of the coring pipe is provided with a mother drill bit, drill teeth are fixedly installed on the mother drill bit at an interval, a son drill bit is embedded into the mother drill bit, and the mother drill bit is connected with the son drill bit through a locking device; the locking device comprises a locking latch, a baffle plate and a draw bar, the locking latch is arranged in pin holes in the mother drill bit and the son drill bit in a penetrating manner, the baffle plate is connected with the draw bar through a pin, the exterior of the locking latch is sleeved by a latch spring, and the upper end of the draw bar is arranged in the bottom of the son drill bit in a penetrating manner. The mother-son drill bit spot coring device takes fast spot sampling required by coal seam gas extraction effect examination as the technical condition, the mother and son drill bits are locked and drill in a linked manner when sampling is not carried out, an unlocking device is started when a predetermined sampling position is reached, the mother drill bit takes samples in the manner of a sampling pipe, time is saved, positioning is accurate and sample mixing can be avoided, and the aim of fast spot sampling is achieved.

The invention discloses a sandy riverbed sediment pore water collection device and a manufacturing method thereof, and aims to solve the problems of low success rate of riverbed sediment pore water collection, large external disturbance and high cost at present. According to the device, an upper steel pipe, a middle steel pipe, a lower steel pipe, a water inlet section and a bottom steel pipe aresequentially arranged from top to bottom, a solid stress steel ball is arranged at the top end of the upper steel pipe, a conical drill bit is arranged at the lower end of the bottom steel pipe, and two sampling holes are symmetrically formed in the pipe wall of the upper steel pipe relative to the axis; and a plurality of outer steel pipe water inlet holes are formed in the pipe wall of the outersteel pipe of the water inlet section, a plurality of inner steel pipe water inlet holes are formed in the pipe wall of the inner steel pipe, an outer steel pipe filter screen is arranged on the inner wall of the outer steel pipe, an inner steel pipe filter screen is arranged on the outer wall of the inner steel pipe, and a cavity between the inner steel pipe and the outer steel pipe is filled with quartz sand. The method comprises the following steps: 1, preparing device materials; 2, assembling; and 3, carrying out laser marking of scales. The device is used for collecting the sandy riverbed sediment pore water.

The invention discloses a device for measuring the flow velocity of flame aerosol, and the device is characterized in that the device comprises a base supporting seat, an XYZ three-axis mobile platform, a bidirectional cylinder, a self-locking tweezers connecting part, a self-locking tweezers, a probe sheet, a solenoid valve, and a time relay; the XYZ three-axis mobile platform is disposed on the base supporting seat; the bidirectional cylinder is disposed on the XYZ three-axis mobile platform; the self-locking tweezers is disposed on the bidirectional cylinder through the self-locking tweezers connecting part; the probe sheet is integrally shaped like a circle, is disposed on the self-locking tweezers, and is used for extending into the flame aerosol for sampling; and the solenoid valve and the time delay are used for jointly controlling the movement of the bidirectional cylinder, thereby controlling the stay duration of the probe sheet in the flame aerosol. The device can greatly reduce the radiation and thermal condition loss of a probe through employing a thermophoresis sampling probe, and enables convective heat transfer to remain the main heat transfer between flame and the probe, so as to obtain the flow velocity of the flame aerosol.

The sediment sampler comprises a handle, a connecting plate, a cam heavy hammer, a sampling rope, a locking mechanism, a piston, a sampling pipe, a collecting cavity, a connecting rod and a sealing shovel, the cam heavy hammer is hung at the lower end of the sampling rope; the handle is connected with the collecting cavity through a connecting plate and a connecting rod; the collection cavity is formed in the middle lower part of the sampling pipe; a locking mechanism is arranged between the cam heavy hammer and the sampling pipe and is connected with a sealing shovel at the lower port of thecollecting cavity; before use, the sampling rope is hung on the cam counter weight, the locking mechanism is not touched, and the sealing shovel opens the lower port of the collection cavity; when thesediment sampler is put down and sinks into sediments in a water area, the sediments enter the sampling pipe; when the sampling rope starts to be loosened and the cam heavy hammer falls off, the locking mechanism is started to enable the sealing shovel to close the lower port of the collecting cavity, and sampling is completed. The device is simple in structure, convenient to operate, high in sampling success rate and suitable for auxiliary collection operation of various chemical components of stratified analysis sediments.

The invention discloses a carrying type box sampler, which adopts a carrying type integral structure to simplify and optimize the installation and butt joint with an upper-layer host and a driving mechanism, so as to achieve the design purpose of adapting to more substrate environments and improving the sampling efficiency. The carrying type box sampler mainly comprises a box body and a set of scraper knife mechanisms, wherein the box body is provided with an upper opening and a lower opening; the scraper knife mechanisms are arranged on the side portion of the box body and used for sealing the opening at the bottom part of the box body; each scraper knife mechanism comprises a cross beam used for being upwardly connected with a driving mechanism and a vertical pull rod, the bottom end ofthe pull rod is connected with a set of pull plates by means of pivots, and the end portions of the pull plates are connected with scraper knives by means of the pivots; and the side portion of the box body is connected with upper racks, each upper rack comprises a side bracket and a guide pipe, and the pull rods vertically penetrate the guide pipes. According to the carrying type box sampler, thebox body in the middle is used for storing samples after sampling, the cross beams of the scraper knife mechanisms can be used for connecting and installing the driving mechanism, the scraper knifesare opened and closed by pulling a connecting rod by means of the driving mechanism (such as an oil cylinder) above, and the pull plates and the scraper knifes are sequentially linked by means of thepull rods, so that the scraper knifes can repeatedly open and close the opening at the bottom part of the box body in a reciprocating manner, namely the single-stroke and multi-time sampling operationis realized.

The invention discloses a portable seabed in-situ shallow-surface sediment sampling device, and relates to the technical field of seabed sampling. A fixing plate is externally connected to a handle; outer cylinders are fixedly arranged on the fixing plate and evenly distributed on the outer side of a lead screw, the bottom ends of the outer cylinders are conical, open grooves A back to the lead screw are formed in the side faces of the outer cylinders, and open grooves B right opposite to the lead screw are formed in the side faces of the outer cylinders. Each rotating shaft is arranged in thecorresponding outer cylinder; the sampling barrels are arranged on the rotating shafts, and sampling ports corresponding to the open slots A are formed in the side surfaces of the sampling barrels; gears A are fixedly arranged on the rotating shafts and are over against the open slots B of the outer cylinders; the gears B are rotationally arranged on the screw rod, and each gear B is matched withthe three gears A at the same time. The device has the beneficial effects that the defects of complicated operation and low sampling success rate when the seabed sediment samples are obtained by a traditional method can be effectively avoided, and the sediment samples at different layers of the seabed can be obtained by one-time diving operation.

The invention discloses an undisturbed soil column sampler which is composed of a drill bit, a drill cylinder and a handle. The drill cylinder is internally provided with an inner lining pipe and a block plug, the inner lining pipe is arranged between the drill bit and the block plug, and the outer diameter of the inner lining pipe is equal to the inner diameter of the drill cylinder; the diameter of the block plug is equal to the inner diameter of the drill cylinder; the center of the block plug is provided with an air hole. Compared with the prior art, the undisturbed soil column sampler is wide in applicability and particularly suitable for collecting undisturbed root system soil column samples in a forest with multiple gravels and root systems except for farmland and grass soil to which an ordinary sampler is applicable; the undisturbed soil column sampler is simple in operation, concise and effective in structure, convenient to carry and firm and durable.

The invention provides an exhaled air concentration measuring device and method based on a human-computer interaction module. The exhaled air concentration measuring device comprises a gas circuit module and a control module which communicate with each other. The gas circuit module is composed of a sampling module and an analysis module; the sampling module comprises a flow controller, a three-wayvalve I, a gas buffer area, a flow detection device II and a sucking pump I which are connected in sequence; an electromagnetic valve is arranged on a branch between the gas buffer area and the sucking pump I; the analysis module comprises a gas buffer area, a three-way valve II, an air humidity regulator, a sucking pump II and an air concentration sensor which are sequentially connected. The success rate and accuracy of exhaled air concentration measurement are improved, data measured by all instruments are collected and processed through a big data platform, and therefore personalized medical treatment and statistical analysis of similar diseases are achieved.