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

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 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 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 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 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 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 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.