9results about How to "Implement Stratified Sampling" patented technology

The invention relates to the technical field of sewage monitoring, in particular to a water quality monitoring device for a sewage discharge pipe network of a sewage discharge pump station. When sewage is normally conveyed, the first arc-shaped baffle and the second arc-shaped baffle are located in the upper direction and the lower direction respectively and completely cover the cross section of the connecting pipeline, and at the moment, the first arc-shaped baffle and the second arc-shaped baffle achieve the filtering effect; the sampling pipe can be controlled to move into the first flowing cavity or the second flowing cavity to sample the two cavities separately, liquid with different turbid degrees is obtained, the follow-up detection efficiency is improved, at the moment, the first arc-shaped baffle and the second arc-shaped baffle are controlled to be completely attached, the flowing cavity can form a closed space, the liquid in the flowing cavity is sampled at the moment, and the detection efficiency is improved. By means of the method, standing sampling, namely directional sampling can be achieved, the situation that flowing occurs when sampling is not completed due to the influence of sewage flow is avoided, and according to the method, the first flowing cavity can be adjusted into a closed space for sewage sampling, and the purpose of stratified sampling is achieved.

The utility model relates to the technical field of urban soil, in particular to an urban soil ecological environment monitoring device which comprises a fixed outer frame, and a sub-packaging box is inserted into the bottom end of the interior of the fixed outer frame in a sliding mode. The sampling assembly is inserted into the limiting threaded pipe in a threaded manner; and the screening assembly is arranged in the fixed outer frame. According to the utility model, the fixed outer frame, the limiting threaded pipe and the sampling assembly are matched for use, so that layered sampling of soil samples of different depths of the same land can be realized. Through cooperative use of the mounting and fixing outer frame, the separation bin, the vibration motor, the subpackaging box, the first telescopic column, the second telescopic column, the damping spring and the formed feeding port, gravel and garbage in a soil sample can be automatically screened out, and the reliability of a soil analysis result is improved.

The utility model relates to soil sampling technical field, and disclose a kind of sampling device for soil heavy metal monitoring, to solve the problems, such as low efficiency of traditional device, difficult stratified sampling etc., it includes trolley with universal wheel and handle, trolley surface is equipped with adjusting mechanism and sampling mechanism, adjusting mechanism contains horizontal and longitudinal adjusting assembly, horizontal passes through first servo motor drive screw rod, and drives sliding base along fixed rod horizontal sliding;Longitudinal is driven screw rod by second servo motor, so that sliding base along fixed rod longitudinal sliding, realize the multi-position adjustment of sampling mechanism, in sampling mechanism, first hydraulic cylinder drives hydraulic telescopic column with sampling soil sampling tube into soil, after taking soil, first cylinder drives push plate to push out sample, bottom baffle is opened and closed by second cylinder control and realizes stratified sampling, the setting of sampling mechanism can realize efficient soil sampling and convenient unloading, simultaneously stratified sampling function can be realized in sampling process, protective housing protects cylinder, the device is efficient and convenient, can guarantee sample purity and accuracy.

The utility model provides an underwater sediment sampling device which comprises a sampling pipe, the sampling pipe is formed by buckling two sampling single bodies, the top of the sampling pipe is provided with an opening and closing mechanism, the opening and closing mechanism comprises two connecting parts which are respectively fixed with the two sampling single bodies, and the two connecting parts are connected through an adjusting connecting rod. The adjusting connecting rod comprises a first connecting rod and a second connecting rod which are hinged to each other, a connecting block is further fixed to the top end of the first connecting rod, a vertically-formed threaded hole is formed in the connecting block, and an opening and closing screw matched with threads of the threaded hole is arranged in the threaded hole in a penetrating mode. The sampling tube has the beneficial effects that the sampling tube is divided into the two groove-shaped sampling single bodies through the opening and closing mechanism, after sampling, one sampling single body is opened upwards, the other sampling single body is positioned at the bottom and is used for containing a sample, and at the moment, the shape structure of the sample in the sampling tube can be kept not loose by virtue of the viscosity of the sample; therefore, the layers of the underwater sediments can be completely displayed, and layered sampling is realized.

The utility model discloses a device for acquiring water samples of different water layers, which relates to the field of water sampling and comprises a sampling main body, the sampling main body is provided with a plurality of mutually independent chambers, all the chambers are arranged along the depth direction of the sampling main body, each chamber is provided with a sampling port, a slide rail is arranged at the sampling port, a baffle is slidably connected in the slide rail, and the baffle is connected with the sampling main body. The baffle slides, so that the sampling port can be switched between an opened state and a closed state; all the baffles are connected with a driving device, and the driving device can drive the baffles to slide in the sliding rails; the top of each chamber is connected with an exhaust pipe, and an exhaust port of the exhaust pipe is close to the topmost position of the sampling main body. According to the utility model, water samples of different water layers can be effectively obtained, electronic or electric equipment is not needed, pure mechanical sampling is utilized, the service life of the device is prolonged, and the possibility of damage is reduced.

The invention discloses a groundwater single-tube pulse stratified sampling device based on the gas drive principle. A monitoring well is divided into multiple aquifers by a packer. The stratified sampling device in each aquifer comprises a first flow guide pipe, a first tee, a first check valve, a second check valve, a third check valve, a first downhole gas drive mechanism, a first pressure relief valve, a first pneumatic quick-plug connector, a second pneumatic quick-plug connector, a third pneumatic quick-plug connector, a first downhole flow storage container and a second filtering and dialysis component. The invention can realize one-stop groundwater sampling of different depths and different aquifers; the gas drive operation ensures high fidelity and representativeness of groundwater samples during the sampling process; two pipelines in a single layer are reduced to one pipeline, and the rated number of sampling layers of the groundwater stratified sampling device is doubled under the same conditions; and the integration capability of the downhole monitoring module is improved by reducing the number of pipelines and the occupied space in the wellbore, thereby providing a physical space and technical basis for the integrated downhole monitoring module.

The utility model provides a kind of sampling device for lubricating oil detection, belong to lubricating oil detection technical field. Including fixed plate, the one end of fixed plate is fixedly installed with sampling assembly, sampling assembly includes connecting plate, is fixed in the one end of fixed plate, the connecting plate is opened with the adjusting hole of strip shape along vertical direction;Multiple sliding blocks, slidably embedded in adjusting hole, the mounting hole of being opened in each sliding block is penetrated;Multiple rubber cap droppers, respectively fixed on corresponding sliding block, the pipe body of each rubber cap dropper passes through mounting hole, and rubber cap end is towards outside;Two clamping plates of symmetrical arrangement, slidably installed in the end of connecting plate, rubber cap dropper rubber cap end is between two clamping plates;Adjusting mechanism, including screw rod fixed in each sliding block side portion, the side wall of connecting plate is opened with the sliding hole of being communicated with adjusting hole, and the nut of screw rod passes through sliding hole one end screw connection. The utility model realizes multilevel sampling and anti-pollution design, improves lubricating oil detection effect.

The invention discloses a water pollution monitoring and sampling device, and belongs to the technical field of water environment pollution monitoring. The device comprises a sampling barrel body, a floating piston, a piston rod assembly, a hydraulic triggering assembly and a sealing cover body, the floating piston is slidably sealed in the cylinder, a top piston is arranged in an inner cavity of the floating piston, a bottom piston linked with the top piston is further arranged in the cylinder, and an oil storage cavity is formed between the top piston and the bottom piston. The hydraulic triggering assembly communicates with an oil outlet in the side wall of the barrel through an oil conveying pipe. Water pressure in the lowering process is used for pushing the bottom piston to move upwards, and the floating piston is driven to ascend synchronously through incompressibility of hydraulic oil in the oil storage cavity; when the target depth is reached, the oil outlet is opened, and high-pressure oil liquid is injected into the hydraulic triggering assembly to bounce off the sealing cover body for sampling; after sampling, water enters to push the top piston to move downwards relatively, the volume of the oil storage cavity is increased to form negative pressure, and oil is sucked back to enable the sealing cover body to reset automatically.

The invention discloses a beach wetland benthonic animal quantitative sampling device, and relates to the field of sampling devices.The beach wetland benthonic animal quantitative sampling device comprises a handle, a connecting rod, a quantitative sampling frame and a spiral sampler, the spiral sampler comprises a sampling rod and a sampler body, and the sampler body is arranged to be a spiral plate and fixedly connected to the peripheral face of the bottom of the sampling rod; the outer diameter of the sampler main body is matched with the inner cavity of the quantitative sampling frame; and the top end of the sampling rod is detachably connected with the handle through a connecting rod. The device is ingenious in conception and compact and reasonable in structure, and the handle, the connecting rod and the spiral sampler are detachably connected, so that the device is convenient to carry and use; the spiral sampler can be used for taking out the whole sample in the quantitative sampling frame without digging out the whole quantitative sampling frame, so that the workload in the sampling process is reduced; and after the whole body is taken out, stratified sampling of benthonic animal samples can be realized according to height measurement of the spiral plate.