734results about "Level indicators by dip members" patented technology

The invention relates to the technical field of grease detection, discloses a method for detecting the height of grease in an oil tank and sampling, and aims to solve the problems of high labor intensity and low operation efficiency and accuracy in the conventional method for detecting the height of grease in the oil tank. Controlling the gear motor to drive the reel to rotate, so that the plumb bob descends from the initial position at a constant speed, and acquiring a pressure value detected by the tension sensor in real time when the plumb bob descends; according to the pressure value, the starting moment when a plumb bob makes contact with the liquid level and the ending moment when the plumb bob makes contact with the tank bottom are determined, the descending length of the lifting rope between the starting moment and the ending moment is determined, and the descending length is the height of grease in the oil tank. According to the invention, the labor intensity of grease height detection and sampling is reduced, and the working efficiency and accuracy are improved.

The utility model discloses a water level monitoring device for water environment governance, which comprises a supporting device, a displacement device is sleeved on the outer ring of the rear end of the supporting device in a sliding manner, a cleaning device is fixedly mounted at the top end of the supporting device, and the displacement device comprises a displacement sleeve plate, a pointer and an air bag. The air bags are fixedly installed at the two ends of the displacement sleeve plate, the pointers are symmetrically and fixedly installed at the front end of the displacement sleeve plate, the cleaning device comprises a scraping plate, a worm wheel, a supporting frame, a winding wheel and a connecting rope, the worm wheel is rotationally installed in the center of the front end of the supporting frame, and the winding wheel is fixedly installed in the center of the front end of the worm wheel. And the connecting rope is fixedly installed on the outer ring of the winding wheel, the scraping plate is fixedly installed at the bottom end of the connecting rope, and the supporting device comprises a driving motor, a worm, a vertical groove, a vertical plate and a round rod. Through the arrangement of the displacement device, the cleaning device and the supporting device, the purpose of cleaning the scaleplate is achieved.

The utility model discloses a molten steel level height detection tool which comprises an installation lantern ring which is connected to the outer side of an oxygen lance outer pipe in a sleeved mode, a threaded hole is formed in the installation lantern ring, a first locking jackscrew is connected to the interior of the threaded hole in a threaded mode, and the end of the first locking jackscrew abuts against the oxygen lance outer pipe and is used for fixing the installation lantern ring. A measuring sleeve is further arranged on the outer side of the mounting lantern ring and is of a tubular structure with the upper portion closed and the lower end open. According to the utility model, the accurate molten steel level height is obtained by measuring the length of the upper part of the molten steel level trace on the oxygen lance and comparing the length with the relative height of the oxygen lance outer tube, the data value accuracy of the encoder carried by the oxygen lance outer tube is verified, and the actual height of the oxygen lance outer tube is adjusted according to the error amount. Therefore, the problems that due to the fact that the lance position of the oxygen lance is not accurate, splashing is serious in the blowing process, and resources are wasted are solved, the problems that due to the fact that the installation position is not accurate, the oxygen lance is abnormally bonded with steel and cold iron, and the number of offline lines is large are solved, the working safety of the oxygen lance is improved, and the equipment maintenance cost is reduced.

The utility model discloses a mine accumulated water depth measuring device, which belongs to the technical field of mine accumulated water measurement and comprises a floating plate, supporting plates are symmetrically and fixedly connected to the side surface of the floating plate, a winding roller is arranged on the inner side of each supporting plate, a rope is fixedly connected to the side surface of each winding roller, and a through hole is formed in the center of the floating plate. One end of the rope penetrates through the through hole to be fixedly connected with a balancing weight, the upper surface of the floating plate is rotationally connected with a gear ring, the inner side surface of the gear ring is fixedly connected with an electric telescopic rod through a side plate, and one end of the electric telescopic rod is fixedly connected with a marking pen. The situation that mine accumulated water is measured manually through a lifting rope and a balancing weight is avoided, the situation that the measurement accuracy of the mine accumulated water depth is reduced due to rough measurement is prevented, the measurement device can enter a mine for measurement, the limitation of mine accumulated water measurement is reduced, large-area multi-point measurement can be achieved, and the measurement efficiency is improved. People can further know the depth of the accumulated water in the mine, and the practicability of the measuring device is improved.

A no emission tank gauge has a housing having a valve connection extending from a bottom side of the housing, a gauge line within the housing, the gauge line having a plumb bob attached at a free end, a pulley attached within the housing and supporting the gauge line, the pulley configured to allow extension and retraction of the gauge line, and an actuator connected to the pulley and extending exterior to the housing and configured to actuate the extension and retraction of the gauge line via rotation of the pulley. The housing has a window in a wall of the housing facing a marked side of the gauge line. The valve connection has an opening sized to allow for passage of the plumb bob and the gauge line. The housing is sealed when the valve connection is connected to a valve to prevent escape of fluid.

Methods, apparatus, and systems for determining a level of a liquid in a liquid-containing vessel are disclosed. The liquid-containing vessel may be fluidically connected to a displacer cage. The method may include obtaining, with a load measurement device, a weight force of a displacer suspended from the load measurement device and disposed within the displacer cage. The method may also include submerging the displacer into the liquid and obtaining, with the load measurement device, a net force acting on the displacer. The method may further include obtaining, with a liquid density measurement sensor disposed within the displacer cage, a liquid density at a first location of the liquid. The method may still further include determining, using, at least, the net force and the liquid density at the first location of the liquid, the level of the liquid in the vessel.

The invention relates to the field of safety monitoring of refuse landfills, and provides a layered leachate water level monitoring method. The method comprises the following steps: firstly, determining the position, the thickness and the number of soil covering layers in the middle of the landfill through exploration drill holes, and then burying monitoring holes in a garbage heap body under each soil covering layer to realize layering. After it is confirmed that hole sealing is dense and the water level is stable through one-week observation, the steel ruler water level gauge is adopted for measuring the leachate water level of each monitoring hole. The distance from the water level surface to the pipe orifice is determined by repeatedly monitoring for three times and averaging, and the water level elevation is obtained by leveling. The water level change value is obtained by comparing the water level elevations measured twice, and the accumulated variable quantity is obtained by comparing with the first measurement. The method can be used for intuitively, quickly and accurately measuring the water level of the leachate on each layer of covering soil, analyzing the occurrence form and continuity of the leachate and evaluating the stability of a garbage heap.

The utility model provides a hydrogen peroxide storage tank liquid level meter which comprises a liquid level meter body, a protective shell is installed on the outer side of the liquid level meter body, and a plurality of sets of U-shaped visible windows are arranged on the outer side of the protective shell. Connecting pieces are installed at the two ends of the protective shell. According to the liquid level meter, the liquid level meter body is matched with the protective shell, so that the liquid level meter body can be protected, the liquid level meter body is prevented from being damaged due to the fact that the liquid level meter body is collided by the outside in the using process, and the service life of a product is prolonged; according to the liquid level meter, the U-shaped visual window is matched with the protective shell, a user can conveniently observe the liquid level meter body in a multi-direction and multi-angle mode, the sealing performance of the protective shell can be improved through matching of the sealing sleeve, the liquid level meter body and the protective shell, the liquid leakage condition is avoided, and therefore the measurement accuracy of the liquid level meter is improved.

The invention discloses a river channel measuring device which comprises a depth marking assembly, an automatic triggering assembly, a folding and unfolding adjusting mechanism, an L-shaped supporting frame and a button mounting frame. The invention belongs to the technical field of riverway sludge measurement, and provides a depth marking assembly, an automatic triggering assembly, a water level detection assembly, a water level detection assembly and a water level detection assembly in order to solve the problem that the existing riverway measurement device is difficult to intuitively compare the sludge depth and the water level height. According to the scheme, the problem of sludge depth and water level height which are difficult to observe visually in a river channel is converted into the problem of observing the water depth indicator lamp and the sludge depth indicator lamp on the L-shaped support frame, so that the observation is more visual and convenient obviously; and the water depth indicator lamp and the sludge depth indicator lamp with the same size can indicate the sludge depth and the water level height in the river channel in equal proportion, and the measurement result is accurate.

The utility model discloses a fire-fighting natural water source intake water level monitor, which relates to the technical field of water level monitoring and comprises a tripod device and an aluminum alloy box staff, a telescopic pull box is fixedly mounted at the top end of the aluminum alloy box staff, and a steel wire rope is fixedly connected between the telescopic pull box and a support plate. The steel wire rope is movably sleeved with a noctilucent floating ball; both the tripod device and the aluminum alloy box staff can be adjusted within a certain range according to the liquid level height of a natural water area, the liquid level height information can be conveniently collected through the arranged noctilucent floating ball, the liquid level height information can be conveniently used at night through the arranged spotlight, and the tripod device can be folded and is convenient to carry. The portability is further improved through the arranged straps, a water source can be found conveniently, whether the selected water source meets the water taking condition or not can be reported to a commander, and in addition, barbs are additionally arranged on the side face of a fixing base of the tripod device and can be inserted into sludge to improve the stability of the tripod device.

The utility model discloses a rice field water level detection device which comprises a fixing ring frame, a plurality of fixing assemblies are annularly installed at the edge position of the bottom of the fixing ring frame, the upper side and the lower side of the fixing ring frame are each provided with a guiding assembly, and a height measuring rod is connected between the two guiding assemblies in a sliding mode. According to the rice field water level detection device, the multiple fixing holes, the inclined columns and the positioning rods are arranged so that the device can be fixed conveniently, and the device is prevented from toppling over when the weather is severe; by arranging a graduated scale, a transparent plate, a connecting rod and a height pointer, external interference on a detection result of the device is small, water level conditions of different plots can be checked conveniently, physical strength is saved, the equipment cost is low, and by arranging a supporting roller, a roller support, a supporting rod and a supporting ring frame, a height measuring rod can be supported to ascend and descend freely. And the detection accuracy is ensured.

The invention discloses early warning equipment for water conservancy flood prevention and an early warning method thereof, and relates to the technical field of alarm devices. Converting the water gauge image into an HSV color space to obtain an HSV image; carrying out hue, saturation and brightness separation on the HSV image, and respectively carrying out graying processing on separated components; whether the water gauge image belongs to a low-light image or a normal-light image is judged through the brightness component; if the image is a low-light image, brightness enhancement processing is carried out; carrying out image binarization processing and filtering processing; calculating a minimum surrounding matrix of a water gauge for the filtered image, and extracting a water gauge area; counting the number of scale marks in the water gauge area, and calculating to obtain a water level value according to the number; if the water level value is larger than the warning value, an alarm instruction is sent. A water level value is calculated by processing a low-illumination water level gauge image and accurately extracting a water level gauge, and early warning information is sent according to the water level value.

The utility model belongs to the technical field of land surveying and mapping devices, and particularly relates to a land surveying and mapping measuring tool, which is characterized in that an inserting rod of an alloy tripod can extend into a flat ground far away from a river to stabilize the device, and a sliding seat can drive an upper mother board and a lower mother board to move along a slotted horizontal plane of a through hole; the upper mother board and the lower mother board extend into the water from the upstream of the river and gradually move to the deep water, so that the measurement range is widened; the electric telescopic rod on the inner side of the upper mother plate can be started, the push rod pushes the lower mother plate at the bottom to extend out of the upper mother plate until the push rod makes contact with a riverbed, the lower mother plate is flexibly controlled to stretch out and draw back in an electric mode, and collision is effectively prevented; and then, the level gauge body provides a horizontal sight line, can be aligned with the leveling rod for reading and is used for measuring the height difference between two points, and scale marks of the upper mother board and the lower mother board are added, so that the depth of the water level is accurately measured, and high-precision measurement is completed.

The utility model discloses a liquid dropping detection device for lubricating oil detection, which comprises a base, a collecting box is arranged in the middle of the upper end of the base, the collecting box is attached to the base, a transparent oil storage tank is arranged on one side of the upper end of the base, a tank cover is arranged at the upper end of the transparent oil storage tank, and the liquid dropping detection device further comprises a first transmission cavity, the first transmission cavity is formed in one side of the interior of the base, a threaded rod is rotationally arranged on one side of the interior of the first transmission cavity, a lifting plate is in threaded connection with the exterior of the threaded rod, one end of the lifting plate extends to the exterior of the first transmission cavity, and a liquid dropping nozzle is arranged at the end, located outside the first transmission cavity, of the lifting plate. According to the dropping liquid detection device for lubricating oil detection, the distance between the dropping liquid nozzle and the collection box can be controlled, so that the proper dropping speed can be adjusted, the applicability is improved, detection is facilitated, the dropping area of lubricating oil can be illuminated through the illuminating lamp, and the practicability is good.

The utility model discloses an adjustable river depth hydrographic measuring rod, which relates to the technical field of measuring rods, and comprises a measuring rod, the measuring rod comprises a measuring rod main body, an auxiliary part is arranged on the measuring rod main body, the measuring rod main body comprises a first positioning rod, a second positioning rod is connected in the first positioning rod in a sliding manner, and the auxiliary part comprises an index assembly. A limiting assembly is arranged on the index assembly, a water inlet hole is formed in one side of the first positioning rod, a first observation window is fixedly connected to one side of the first positioning rod, a first graduated scale is arranged on one side of the first positioning rod, and the first graduated scale corresponds to the first observation window. According to the utility model, the horizontal plane can be distinguished, so that data can be read more intuitively, relatively large floating does not easily occur relative to the external indicator and the indicator in the measuring rod, data reading is facilitated, meanwhile, the rotating shaft can be limited, and the situation that the rotating shaft still rotates after take-up and pay-off, and recovery and fixation of the indicator are not facilitated is prevented.

The invention discloses a water surface LNAPL layer thickness online monitoring device and method based on the light refraction principle. The device is composed of a laser range finder, a light receiver, a light source, a distance rod, data processing equipment and the like. The length of the distance rod in liquid is calculated through data of a laser range finder, and the thickness of the oil film in underground water is calculated according to the transverse propagation distance difference of the running path of light passing through an oil layer or not. The device is free of moving equipment, low in failure rate, small in size and high in precision, and is not influenced by underground water level fluctuation. According to the method, real-time online monitoring of the NAPL phase thickness in underground water can be realized through the underground water monitoring well.

The utility model belongs to the technical field of hydraulic engineering, and particularly relates to a water level detection device for hydraulic engineering, which comprises a grip, a bubble level arranged at the upper end of the grip, a connecting cylinder arranged on the side surface of the grip, a lantern ring arranged at one end, far away from the grip, of the connecting cylinder, a depth measuring rod slidably inserted into the inner side of the lantern ring, and a spring arranged on the inner side of the connecting cylinder. A pressing block is arranged on the side, away from the grip, of the spring and slidably connected with the connecting cylinder, and the connecting cylinder is provided with a sliding groove on the lower side of the spring. The handle is held by a hand, the depth measuring rod is inserted from the inner side of the lantern ring, the lower end of the depth measuring rod extends into the water bottom, the bubble level is made to be vertically upward, the bubble level is observed, and when bubbles in the bubble level are located at the center of the upper side, the bubble level is in a horizontal state, namely, the depth measuring rod is in a horizontal state. Therefore, the problems that the sounding rod is not perpendicular to the horizontal plane and water level measurement data have errors due to visual errors, misoperation and the like are effectively avoided.

The utility model relates to the technical field of underground water level measuring devices, and discloses an underground water level ruler suitable for various wellhead conditions, which comprises a support main body, a control panel is mounted on one side of the support main body, and a switch, an indicator light, a voltmeter, a buzzer, a battery compartment and a handle are arranged on one side of the control panel. According to the underground water level gauge suitable for various wellhead conditions, the limiting rod is pulled to move outwards until the limiting rod is separated from the interior of the limiting hole, fixing of the connecting ring is relieved, balance weight devices of different shapes can be selected and used according to the field wellhead conditions, and even if the water level gauge body is clamped in field measurement, the water level gauge body can be conveniently used. When the bearing threshold value of the connecting ring is exceeded, the water gauge main body can also be pulled out, the water gauge main body is a steel bendable ruler, water level measurement work can be continued by replacing a proper balancing weight on site, the field actual working efficiency is effectively improved, and the working cost is reduced.

The invention relates to a combined metering method and system for the slag discharge amount of a slurry shield tunneling machine. The method comprises the steps that the slurry change amount in a slurry tank before and after each segment of the slurry shield tunneling machine is tunneled is measured; the muck variation of the muck field in the whole tunneling process of the slurry shield tunneling machine is measured; comprehensively calculating the slag tapping quantity of the real square; calculating an actual check volume according to the specification of the slurry shield tunneling machine; the flow and density of the slurry pipeline in the whole tunneling process are measured in real time, and the real-square deslagging check quantity is calculated; and calculating a first deviation value between the real square check volume and the real square slag discharge quantity, calculating a second deviation value between the real square slag discharge check quantity and the real square slag discharge quantity, and checking the real square slag discharge quantity by judging the first deviation value and the second deviation value. According to the method, a plurality of data sources are integrated, the actual volume deslagging quantity generated in the tunneling process of each ring of duct piece of the slurry shield tunneling machine is calculated more accurately, the actual volume checking volume and the actual volume deslagging checking quantity are used for checking, and the reliability of a measurement result is improved.

The invention discloses a residence elevator shaft accumulated water measuring and alarming device which comprises a measuring and alarming box. A water level measuring line used for measuring the water level of accumulated water is engraved on the side face of the side, facing the middle of the elevator shaft, of the measuring alarm box, the knocking alarm mechanism is installed on the upper side in the measuring alarm box, the top of the knocking alarm mechanism communicates with an alarm water level inlet, and water collecting tanks installed at the bottom in the measuring alarm box are arranged at the bottom at intervals; an automatic drainage control system is arranged on the side, away from the one-way drainage valve port, of the water collection tank, the knocking alarm mechanism comprises a lifting type swing assembly arranged on the upper side in the measurement alarm box, the top of the lifting type swing assembly is communicated with the alarm water level inlet, and the lifting type swing assembly is provided with a knocking alarm part in a pressing contact mode. According to the device, mechanical structure matching is adopted in the whole process, and compared with electronic equipment, the device has extremely high safety and durability.

The utility model belongs to the technical field of river and lake water conservancy measurement, specifically a measuring device for river and lake water conservancy projects, comprising a measuring device body; a winding device is fixedly connected to the bottom inner side of the measuring device body; a winding auxiliary wheel is fixedly connected to the top of the measuring device body; the winding auxiliary wheel is arranged above the winding device; a measuring rope is fixedly connected to the outer wall of the winding device; the outer wall of the measuring rope and the outer wall of the winding auxiliary wheel are in contact with each other; when working, it can drive the first transmission gear to rotate together, and the rotating first transmission gear can clean the impurities attached to the outer wall of the measuring rope through multiple groups of first cleaning plates; the overall device improves the cleanliness of the measuring rope surface, and reduces the situation that a certain amount of impurities and aquatic plants will inevitably adhere to the surface of the measuring rope during the winding process, causing pollution to the paint surface of the winding device; the overall device improves the stability of the winding device when working for a long time.

The utility model discloses a water depth measuring device for a water conservancy project, which comprises a mounting table and a support frame positioned on the mounting table, a reel is arranged on the support frame, a motor connected with the reel is arranged on one side of the support frame, a measuring rope with scale marks is wound on the reel, and the scale marks are arranged on the measuring rope. A guide structure used for guiding a measuring rope is arranged below the reel, a gravity block is arranged at the tail end of the measuring rope, a pressure sensor used for detecting the gravity of the measuring rope is arranged on the guide structure, and a through hole allowing the measuring rope to pass through is formed in the mounting table. A floating platform movably connected with the bottom of the mounting table is arranged under the through hole, the floating platform is arranged around the measuring rope, and the floating platform is provided with a camera facing the scale marks. Compared with the prior art, the accuracy and stability of water level measurement are improved.

The invention discloses a water level monitoring device for hydrological engineering geology, which relates to the technical field of hydrological engineering and comprises a top plate arranged on a monitoring cylinder, a floating plate arranged in the monitoring cylinder, a first end of a sliding marker post vertically connected to the floating plate, and a second end of the sliding marker post respectively and slidably penetrating through the top wall of the monitoring cylinder and the top plate and extending out of the top plate. A monitoring camera is arranged on the top plate on the right side of the sliding marker post penetrating through the top plate, a storage battery is arranged on the top plate on the right side of the monitoring camera, and a solar panel is arranged on the top plate on the right side of the storage battery; a first cleaning mechanism for cleaning the inner wall and the outer wall of the monitoring cylinder is arranged on the monitoring cylinder; a filter plate is arranged at the bottom of the monitoring cylinder, and a second cleaning mechanism for cleaning the filter plate is arranged below the filter plate; a knocking mechanism for vibrating the filter plate is arranged on the outer side of the second cleaning mechanism, the knocking mechanism is driven by the first cleaning mechanism, and the second cleaning mechanism is driven by the knocking mechanism; the device is simple and reliable in structure, good in water level monitoring effect, convenient to control and suitable for popularization.

The invention provides a liquid level measuring device for liquid crystal glass substrate production and a measuring method, the liquid level measuring device comprises a support frame mounted on one side of a glass liquid container, the top of the glass liquid container is provided with a through hole communicated with the interior of the glass liquid container, and one end of the support frame extends to the upper part of the through hole. Through the design of the telescopic mechanism, the cleaning mechanism and the limiting mechanism, the cleaning mechanism extends into the molten glass container through the telescopic mechanism, so that the cleaning mechanism is in contact with the bottom of the outer side wall of the detection floating ball, and at the moment, the limiting mechanism limits the upward sliding of the measuring rod on the supporting frame; the bottom position of the outer side wall of the detection floating ball can be scraped and cleaned through the cleaning mechanism, so that the situation that in the long-term monitoring process of the glass liquid level, attachments are attached to the surface of the detection floating ball, the weight of the detection floating ball is changed, and the buoyancy of the detection floating ball is changed is effectively avoided; therefore, the detection precision of the glass liquid level is improved.

The utility model discloses a foldable storage water level marker post, which relates to the technical field of water level marker posts and comprises a first marker post and a base, the base is connected to the bottom end of the outer wall of the first marker post, a second marker post is arranged above the first marker post, and an auxiliary mechanism is arranged below the second marker post. When the water level marker post capable of being folded and stored is used, the water level marker post is folded and stored through the auxiliary mechanism, so that the overall length and occupied space are reduced, a worker can conveniently carry the water level marker post to move to different places for water level detection, and a reinforcing rod is inserted into river sludge through the supporting mechanism; and then the fixing effect between the base and a river channel is improved, the water level marker post is prevented from inclining when being impacted by water waves, the supporting stability of the water level marker post is improved, and therefore when the water level marker post is used, the effects of being convenient to fold and store and supporting and preventing inclination are achieved.

The invention relates to the field of bridge operation safety, in particular to a flood season bridge water level monitoring and early warning method and system. The method comprises the following steps: constructing a flood season bridge safety water level system; setting a flood season bridge safety water level mark according to the flood season bridge safety water level line system; based on the safe water level mark of the bridge in the flood season, obtaining the water depth of a pier; acquiring a monitoring result of the water level under the bridge according to the water depth at the bridge pier; through the monitoring result, the risk early warning of the water level under the bridge in the flood season is realized. Water lines are marked in a color separation and grading mode, the warning water level prompting sign is additionally arranged, a standardized and visual water level recognition system is constructed, the function limitation of an existing water level mark is effectively made up, and the accuracy of bridge safety monitoring in the flood season and the timeliness of emergency disposal are remarkably improved; the water depth is monitored through the Karman vortex street effect and the low-concentration ion marking technology, water level over-limit real-time early warning is achieved, and a quantitative basis is provided for bridge safety assessment and emergency sealing control.

The utility model discloses a water level gauge for a water conservancy project, which is characterized in that a fixed base is arranged at the bottom of a measuring ruler, ruler scales are arranged on the side edge of the measuring ruler, a lifting sliding cavity is arranged in the measuring ruler, a lifting buoy is arranged in the lifting sliding cavity, and a highest water level lifting ruler is arranged at the top of the lifting buoy; an L-shaped water inlet pipe is arranged in the left side of the fixed base, the top of the L-shaped water inlet pipe communicates with the bottom of the lifting sliding cavity, a one-way water inlet valve is installed on the L-shaped water inlet pipe, and an electromagnetic drainage valve is installed on the right side of the lower portion of the lifting sliding cavity; a water source in the lifting sliding cavity is released through the electromagnetic drain valve, and the record of the last highest water level is emptied. The water level display device is reasonable in design, can display the real-time water level outside through the scales of the ruler, and can drive the lifting ruler to display the highest water level line during measurement through the lifting of the built-in buoy.

The invention relates to the field of underground water sampling equipment, and discloses an underground water sampling device which comprises a base, a winding roller is movably mounted at the top of the base, pull ropes are wound on the outer diameters of the two sides of the winding roller, a drainage pipe is wound on the outer diameter of the middle of the winding roller, and the tail ends of the winding roller are fixedly connected to the two sides of the top end of a probe respectively. An upper cavity is formed in the upper side of the interior of the probe, a sleeve is movably installed in the middle of the interior of the upper cavity, a plurality of water storage tanks are formed in the positions, close to the outer side of the upper cavity, of the interior of the probe, a rotating shaft is movably installed on the lower side of the interior of the upper cavity, and a lower cavity is formed in the lower side of the interior of the probe. According to the underground water sampling device, on one hand, underground water can be pumped out for conventional sampling through the water absorption and drainage effects of the rubber piston, on the other hand, the water storage tank can collect underground water at different water levels to serve as sampling specimens, underground water sampling in multiple modes is achieved, and different sampling requirements are met.

The utility model discloses a portable oil-water interface instrument which comprises a suspension device and a force measurement indicating device, the suspension device is vertically arranged, the force measurement indicating device is arranged above the suspension device, and the force measurement indicating device is used for displaying the mass of the suspension device in real time. According to the device, the mass of the suspension device is displayed in real time through the force measurement indicating device, when the suspension device enters crude oil and generates buoyancy, the display value of the force measurement indicating device is reduced, and the suspension device continues to move downwards and float on the water surface, the buoyancy is increased, and the indicating value of the force measurement indicating device is further reduced, so that an operator can visually and accurately measure the mass of the suspension device through the change of the indicating value. The position of the suspension device is judged, so that the measurement result is more accurate, a sampler does not need to be used for sampling for multiple times, time and labor are saved, the phenomena of sampler falling caused by violent ruler shaking and sample scattering in the sampling process are greatly avoided, and environmental pollution generated in the measurement process is reduced.

The utility model relates to the technical field of telescopic measuring rods, and discloses a telescopic measuring rod which comprises a first measuring rod, a second measuring rod slidably sleeved on the outer side of the first measuring rod, a third measuring rod slidably sleeved on the outer side of the second measuring rod, and a conical block fixedly connected with one end of the first measuring rod. Calibrated scales are arranged in the outer sides of the first measuring rod, the second measuring rod and the third measuring rod in a sliding mode, connecting plates are fixedly arranged on the two sides of the calibrated scales, and the multiple calibrated scales are installed in the outer sides of the first measuring rod, the second measuring rod and the third measuring rod through the connecting plates in a sliding mode during use. Then the second measuring rod is installed on the outer side of the first measuring rod in a sliding mode, meanwhile, the third measuring rod is installed on the outer side of the second measuring rod in a sliding mode, and when the water level is measured, the first measuring rod and the second measuring rod are fixed through the hand screwing bolt after being slid to proper positions, so that the water level is measured.