54results about How to "Guaranteed sampling efficiency" patented technology

The invention discloses an AUV docking and recycling autonomous navigation method based on a FMSRUPF algorithm, the docking and recycling of an AUV is based on the autonomous navigation of a SINS / USBL / DVL, the invention provides a fading memory square root unscented particle filtering algorithm which is the FMSRUPF algorithm, and a system combined particle resampling method is employed for a resampling part. According to the employed FMSRUPF algorithm, the influence of historical information on filtering is reduced by using an attenuation factor, the effect of current measurement information in the filtering calculation is enhanced, then a covariance matrix is substituted by a square root array of the covariance matrix to perform filtering and solving, and finally, a resampling process isimproved by using a system combined particle resampling method. According to the method, the filtering divergence problem caused by rough establishment or distortion of an AUV docking and recycling system model is solved by the FMSRUPF algorithm and the system combined particle resampling method, good numerical characteristics and medium computational burden are combined, and the positioning accuracy and stability of the AUV docking and recycling autonomous navigation are effectively improved.

The invention discloses a layered collection and preservation device for deep lake water samples, which comprises a frame assembly, a sampling and preservation device, a transmission device, a power device and a flow guide device, the frame assembly is fixedly connected with the sampling and preservation device, one side of the sampling and preservation device is communicated with one side of the transmission device, one side of the transmission device is in fastening connection with one side of the frame assembly, the frame assembly is in fastening connection with the power device, the frame assembly comprises a frame, a flow guide device is arranged on the outer ring of the frame, the frame is in fastening connection with the flow guide device, and the power device comprises a sedimentation assembly and a jacking assembly. The bottom side of the sedimentation assembly is fixedly connected with the upper end of the frame, the upper side of the jacking assembly is fixedly connected with the lower end of the frame, a fixing groove is formed in the cylinder body, a transverse plate is arranged at the upper end of the cylinder body and fixedly connected with the cylinder body, a bottom plate is arranged at the lower end of the cylinder body, and the outer circle face of the bottom plate is fixedly connected with the inner side wall of the fixing groove.

The invention relates to the technical field of soil sampling, in particular to sampling storage equipment for soil detection. The equipment comprises a cylinder body, a sampling structure, a limitingstructure, an anti-loss structure, a discharging structure and a dehydration structure, wherein a sampling structure is arranged in the cylinder body; sludge on the river bank can be conveniently sampled in a labor-saving manner; a limiting structure is arranged, and therefore the sampling structure can be limited and fixed; the sampling structure is prevented from sliding when the sludge is taken out after sampling is finished; the sampling structure is used for sampling sludge while driving the discharging structure to work; the discharging structure works, and can act on the anti-loss structure; via the sampling storage equipment, sludge in the sampling structure can be discharged, the sampling structure can drive the dehydration structure to work while conducting sampling work, and the stored sludge can be subjected to extrusion dehydration work through the work of the dehydration structure, so that the sludge can be conveniently stored, and late-stage detection of the sludge canalso be facilitated.

The invention provides a remote-controllable multi-depth water sample collecting device. The collecting device comprises a base plate, wherein an upright is arranged on the base plate; a rotary tableis sleeved at the lower part of the upright and can rotate around the upright a rotary table driving mechanism is arranged below the rotary table; multiple sampling bottles are arranged on the rotarytable around the upright; a bottle cap capable of being separated and covered is arranged on each sampling bottle; a water taking pipe is arranged below the base plate, and the lower end of the watertaking pipe is a sampling port; a water taking depth adjusting mechanism is further arranged on the base plate; one end of the water taking depth adjusting mechanism is connected with the water takingpipe, and the other end is connected with a water inlet pipe; the water inlet pipe is connected with a water pipe in the upright, the upper end of the water pipe in the upright pierces from the top of the upright to connect a water distributive pipe; an electromagnetic valve is arranged on the water distributive pipe, an opening matched with the water distributive pipe is arranged on each bottlecap so that the lower end of the water distributive pipe is inserted into the bottom cap. Through the collecting device provided by the invention, the water samples at different underwater depths canbe collected, and the water sample collecting efficiency is improved.

The invention discloses a building engineering material witness sampling device and a sampling method thereof, relates to the technical field of building engineering material sampling, and aims to solve the problem that an existing witness sampling device cannot effectively and quickly sample materials. The device is characterized in that a fixing cylinder is arranged on one side of the upper end of a base, a driving box is arranged on the other side of the upper end of the base, a worm rod is installed in the fixing cylinder and is in sliding connection with the fixing cylinder, a driving gear is arranged at the lower end of one side of the worm rod, the driving gear is located in the driving box, the driving gear is matched with the external threads of the worm rod, an inner cylinder is arranged in the worm rod and slidably connected with the worm rod, a sampling cylinder is mounted in the inner cylinder, a sawtooth cylinder is integrally arranged at the bottom of the sampling cylinder, an adjusting ring and a fixing ring are arranged at the lower end in the sampling cylinder, metal blades are arranged between the adjusting ring and the fixing ring, the number of the metal blades is five, and the metal blades are distributed in a staggered and stacked mode.

The invention relates to the field of soil sampling, in particular to a soil sampling device for polluted land plot environment survey. The soil sampling device comprises a sampling device and a lifting device; the sampling device is composed of a sampling sleeve, a tapered roller thrust bearing, a bentonite solution container, a transmission layer, an end cap, a connecting rod, a limiting sleeveand a hammer; and the lifting device is composed of a base I, an electromotor II, a winch I, a base II, an electromotor III, a winch II, a support, three fixed pulleys and a positioning frame. According to the soil sampling device, impact type power is adopted, and therefore the sampling depth can be guaranteed; and meanwhile, the wall of a sampling hole is protected by adopting bentonite, the condition that due to the fact that backfill bricks and concrete blocks drop into the sampling hole, sampling is blocked is prevented, the condition that unpolluted deep soil is polluted due to the factthat surface polluted soil drops into the sampling hole can be prevented, the sampling efficiency is guaranteed, and usage of a heavy casing pipe is avoided.

The invention discloses a water environment detection auxiliary device. The device comprises a fixed seat, a fixed plate and a water storage tank, telescopic supporting rods are symmetrically fixed totwo side edges of a top end of the fixed base, and fixing plates are fixed to top ends of the telescopic supporting rods on two sides. A first motor is fixed to one side edge of the top of a surfaceof the fixed plate. An output shaft of the first motor is connected with a first threaded rod; the first threaded rod is sleeved with a sliding sleeve matched with the first threaded rod; the slidingsleeve is connected into a fixed frame in a sliding manner; a sliding groove matched with the sliding sleeve is formed in the position, corresponding to the sliding sleeve, of the middle of the fixedframe, a connecting clamping plate is fixed to the end, away from the fixed frame, of the sliding sleeve, a rack matched with the connecting clamping plate is connected into the connecting clamping plate in a sliding mode, a side edge of the rack is connected with a gear column matched with the rack, one end of the gear column is connected with an output shaft of a second motor, the second motor is fixed to a side edge of the fixed plate, a first electric telescopic rod is fixed to a bottom end of the gear column, and scale marks are fixed to a surface of the gear column and a surface of the first electric telescopic rod.

The invention relates to the technical field of soil sampling, and discloses a multi-functional wetland soil sampling device which comprises a first air bag, a second air bag, a first communicating vessel, a sample storage tank and a main body sampling pipe. The first air bag is located in a first air bag clamping seat, and the first air bag penetrates through the upper surface of the first air bag clamping seat and is clamped and fixed to the first air bag clamping seat. The second air bag is located in a second air bag clamping seat, and the second air bag penetrates through the lower surface of the second air bag clamping seat. Through the combined action of the first air bag and the second air bag, suction force is generated through extrusion, a sampling head is inserted into wetland soil to suck a mud-water mixture, the mud-water mixture is guided into the first air bag and the second air bag through the main body sampling pipe and finally flows into the sample storage tank to besucked and mixed again at the next sampling point, subsequent multi-point sampling is facilitated, the sample pouring-out time is saved, the sampling efficiency is improved, and the subsequent detection precision is guaranteed.

The invention discloses a natural gas pipeline sampling valve. The valve comprises a baffle, a connecting frame, a sampler and a purification box, the purification box is located at the lower end of the baffle and fixedly connected with the baffle, the connecting frame is located on the inner surface of the baffle and fixedly connected with the baffle, the sampler is located in the baffle and comprises a first sampling pipe, a second sampling pipe, a first piston and a second piston, the first piston is located in the first sampling pipe, the second piston is located in the second sampling pipe, the lower ends of the first piston and the second piston are fixedly connected with rubber plates, and the outer circular surfaces of the rubber plates are closely attached to the inner wall of the first sampling pipe. The valve has the advantages that the natural gas sampling accuracy of the sampler is guaranteed, the natural gas sampling efficiency is further guaranteed, the risk of external influence during sampling is reduced, the sampling stability of detection personnel is guaranteed, and the accuracy of a detection result is guaranteed.

The invention discloses an inspection pretreatment device and a pretreatment method. The inspection pretreatment device comprises a carrier platform; a processing unit, which is arranged on the carrier platform and has a chamber for reaction of a reagent to be tested; an ultrasonic vibration unit, which is arranged on the carrier platform and is used for carrying out ultrasonic vibration on the reagent in the processing unit; a stirring unit, which is used for stirring the reagent in the processing unit; and a sample adding and taking-out unit, which is used for adding a test sample into the processing unit and taking out the test sample from the processing unit. The device can realize various functions, such as manual feeding and manual sampling, ultrasonic, stirring, temperature control,soaking, standing and taking supernatant, extraction, nitrogen blowing, temperature monitoring and warning, light avoiding, precise sample adding, precise sample taking out, automatic rinsing and automatic cleaning, in the drug inspection pretreatment process; some functions are also suitable for inspection pretreatment of food, health care products and cosmetics; and the device and method can greatly improve medicine test efficiency.

The invention discloses a medical tumor living body sampling inspection delivering device. The device comprises an accommodation pipe, the right end of the accommodation pipe is sealed, a through holeformed in the lower end of the right side face of the accommodation pipe is slidably connected with a sliding rod, the length of the moving rod is greater than that of the accommodation pipe, the left end of the side face of the moving rod is fixedly connected with the upper end of a scrapping knife, the scrapping knife is located on the left side of the accommodation pipe, an elliptical pipe iscoaxially fixed to the side face of the moving rod, the elliptical pipe is located in the accommodation pipe, and the side face of the elliptical pipe is slidably connected with the arc inner side ofan arc-shaped clamping plate. By means of the device, the damage of a sample when tumor living body of a patient is extracted is prevented, the contamination of the sample is effectively prevented, afirst permanent magnet is absorbed by a second permanent magnet, and the scrapping knife does not shake after sampling is conducted to prevent the damage on the sample to ensure the accuracy of the sample, an elastic device allows the arc-shaped clamping plate to be in contact with the outer side face of the elliptical pipe, the moving rod does not rotate at will, and therefore the sampling efficiency is ensured.

The invention discloses an oncology department sampling in vivo inspecting device. The device comprises an inspecting box, and is characterized in that the inspecting box is internally provided with ascraper device used for sampling in vivo, one side of the scraper device is provided with a partition box body capable of loading a living sample, and one side of the scraper device is provided witha linkage mechanism capable of closing the inspecting box immediately when the scraper mechanism is retracted. The oncology department sampling in vivo inspecting device has the advantages that the structure is simple, the use is convenient, damage on the sample is avoided when sampling in vivo is carried out on a patient, the sample is also prevented from being polluted, a first permanent magnetand a second permanent magnet adsorb the sample, a scraper does not shake after sampling to ensure the precision of the sample, a moving rod does not rotate optionally to ensure the efficiency of sampling, and a cover is closed along with the retraction of the scraper to increase the convenience.

The invention discloses a soil sample collecting device for land resource management, and relates to the technical field of land resource management.The soil sample collecting device comprises a base, a positioning mechanism is arranged in the middle of the top face of the base, a movable sampling mechanism is arranged on one side of the top face of the base, and the movable sampling mechanism comprises a moving assembly and a sampling assembly; the moving assembly is arranged on the side face of the base, and the sampling assembly is arranged on the side face of the moving assembly. An electric telescopic rod extends to drive two moving plates to move, the two moving plates drive transmission rods connected with the moving plates to move when moving on the surface of a guide rail, the transmission rods drive linkage rods to move, the linkage rods drive swing plates to swing at one ends of supporting rods, and the swing plates drive connecting plates to rotate; an inserting rod on the bottom surface of the connecting plate is rotated to a vertical state to be inserted into the ground, and is inserted into the ground for fixing, so that the stability during soil sampling is improved, and the sampling efficiency is ensured.

The invention relates to the technical field of plastic particle production, and particularly discloses a plastic particle online sampling system, which comprises a feeding mechanism including a buffer hopper, a finished product hopper, a conveying pipe and a first fan; the sampling mechanism comprises a sampling pipe, a first valve body, a second valve body, a third valve body, a cyclone separator, a collecting box and a second fan, the sampling pipe is connected to the conveying pipe, the cyclone separator is connected to the end, away from the conveying pipe, of the sampling pipe, and the collecting box is arranged at the discharging end of the cyclone separator; the first valve body and the second valve body are both arranged on the sampling pipe, a branch pipe is arranged on the sampling pipe and between the first valve body and the second valve body, and the third valve body and the second fan are both arranged on the branch pipe; the guide mechanism comprises a guide piece, a baffle and a first motor. According to the sampling device, the inner wall of the sampling pipe can be cleaned, plastic particles in the previous sampling process are prevented from being taken out in the next sampling process, and the sampling accuracy can be guaranteed.

The invention discloses a sampler free from matrix interference. The sampler comprises a VOC adsorption tube, a PM cutting head, an ultrasonic atomizing device, a first-stage sample collection device,a second-stage sample collection device and an air pump; the VOC adsorption tube, the PM cutting head, the first-stage sample collection device, the second-stage sample collection device and the airpump are sequentially connected by a pipeline, the ultrasonic atomizing device is arranged on the connecting pipeline between the PM cutting head and the first-stage sample collection device or on thetop wall of the first-stage sample collection device, and a condensing device is arranged in the second-stage collection device. Filter membranes made of quartz, glass or the like are not used for collection, and such materials have great toxic effects, which brings great matrix interference to the researches on toxicity and toxicology of atmospheric particulate matters, so that the sampler freefrom matrix interference reduces the matrix interference and can ensure the sampling efficiency.

The invention discloses a water conservancy project water quality detection sampling device and a sampling method, and relates to the technical field of water quality detection sampling, the water conservancy project water quality detection sampling device comprises a sampling barrel, a fractional sampling mechanism is arranged in the sampling barrel, and sampling grooves are symmetrically formed in the inner wall of the sampling barrel corresponding to the fractional sampling mechanism; the inner wall of the sampling barrel is provided with a guide groove corresponding to the fractional sampling mechanism, the fractional sampling mechanism comprises a rotating part and a lifting part, and the rotating part is in transmission with the lifting part. According to the sampling device, the blocking block can be controlled to rotate through the driving motor, so that the blocking ring rotates and rises to release the sampling groove in one side in the sampling barrel under the cooperation of the ball and the guide groove, and the sampling state of the sampling grooves in the two sides in the sampling barrel can be controlled through forward and reverse rotation of the blocking block; the purpose of continuously sampling samples of underground water at different water levels is achieved, and the sampling efficiency of the device is further ensured.

The invention relates to the technical field of drilling and sampling, and provides a drilling and sampling device for engineering construction material detection, which comprises a frame, a stand column, a stabilizing frame, a sliding frame, a sliding assembly, a driving assembly, a drilling and sampling assembly with buffering and damping functions and a water spraying assembly, two stand columns are symmetrically and fixedly installed on the vehicle frame, two stabilizing frames are symmetrically and fixedly installed on the vehicle frame, a sliding frame is installed between the two stand columns in a sliding mode, a sliding assembly is installed on the sliding frame, a driving assembly is installed on the sliding frame, a drilling sampling assembly is installed on the sliding frame, and a water spraying assembly is installed on the vehicle frame. The problems that in the prior art, due to the fact that the hardness and texture of a drilled material are not uniform, a drill barrel is prone to being impacted and vibrated in the drilling process, and the drill barrel is prone to being damaged are solved.

The invention discloses a sampler for experiments, which comprises a columnar shell with a hollow interior, wherein a sampling tube communicating with the interior of the columnar shell is arranged atthe front end of the columnar shell; the tail end of the columnar shell is provided with a guide hole coaxial with the sampling tube, a push-pull rod is inserted in the guide hole, the push-pull rodis in sliding fit with the guide hole, and the tail end of the push-pull rod is exposed out of the guide hole; the front end of the push-pull rod is connected with an ejector rod with the same lengthas the sampling tube, an annular flange is arranged on the push-pull rod, and the annular flange is in sliding contact with the inner wall of the columnar shell; when the annular flange is propped against the inner wall of the tail end of the columnar shell, the front end of the ejector rod is inserted into the sampling tube, and when the front end of the push-pull rod is propped against the innerwall of the front end of the columnar shell, the ejector rod is completely inserted into the sampling tube. The sampler of the invention has the beneficial effects that: when the sampler is used forsampling walnut green husks, experimenters do not need to peel the walnut green husks from walnuts or cut the walnut green husks, the operation is convenient and labor-saving, a sampling efficiency ishigh, and the accuracy of experimental results is improved.

The invention belongs to the technical field of production and preparation of building materials, and proposes a self-sampling type polymerization reactor for preparing polycarboxylic acid water reducer and a preparation method thereof, comprising a reactor body, a reactor cover, a leg, a discharge pipe, a connecting pipe, a feed port, a wall sleeve, a stirring shaft, a stirring motor, a stirring component and a self-sampling component, wherein the self-sampling component comprises a sampling plate, a sampling channel, a sampling port, a sampling transmission box, a stepping motor, a transmission mechanism, a flexible shaft piston mechanism and a sampling tube port; the preparation method comprises glucose ester, methyl allyl polyoxyethylene ether, cyclodextrin grafted maleic anhydride, modified starch ether, hydroxypropyl methyl cellulose ether, water, an initiator aqueous solution, a polysorbate aqueous solution and a mixture of propylene oxide and epichlorohydrin. The invention has reasonable design, high heating and stirring efficiency, and can automatically sample, which is conducive to improving production efficiency and production quality of polycarboxylic acid water reducer, and is suitable for large-scale promotion.

The invention relates to the technical field of soil sampling, in particular to a portable soil sampling and analyzing device which comprises a supporting plate, a supporting assembly, a hydraulic cylinder, a lifting supporting plate, a collecting box, a rotary drum and a sampling assembly, the portable soil sampling and analyzing device is driven by a second motor, manpower is not needed, meanwhile, a rotating spiral blade can sample soil on the ground with different hardness, and the sampling efficiency is improved. By arranging a rotary drum, soil scooped up by a spiral blade can be completely conveyed into a collecting box, so that the soil sampling efficiency of the device is guaranteed, by rotating the rotary drum, the rotary drum can be more easily inserted into the soil, the resistance of the device when the device samples deeper soil is reduced, and the sampling efficiency of the device is improved. And the spiral blade and the rotary drum share one second motor for driving, so that the use of the motor of the device is reduced, the overall weight of the device is further reduced, and convenience is further provided for carrying and using the device outdoors.

The invention discloses a non-autocorrelation sampling method for large sample space complex probability distribution, which aims to solve the autocorrelation problem of an MCMC method and the efficiency loss problem of skip sampling. According to the technical scheme, when samples are generated, the correlation among the samples is eliminated by setting a sample buffer area; or as a post-processing method, the generated samples are read in sequence, and the sample sequence is updated through the sample buffer to eliminate the autocorrelation of the sample sequence. When one sample is generated each time or one sample is read from the file, the obtained sample is stored into the sample buffer area, and the sample is randomly selected from the buffer area to output when the buffer area is full. By means of the random output mode, a layer of extra randomness is added between samples, and finally the purpose of eliminating the sample sequence autocorrelation is achieved. By adopting the method, the calculation speed is fast, the MCMC efficiency is maintained, the expenditure of the additionally-increased buffer region operation can be ignored relatively, and meanwhile the sample autocorrelation is eliminated.

The utility model discloses a portable environment DNA sampling device relates to environmental DNA sampling technical field, including installation box and sampling subassembly, installation box: inside rear side is provided with first water cabin and second water cabin, the inside of installation box is provided with two fixed channels, and the inside of two fixed channels is fixed with inlet hose and drain hose respectively, the inlet hose is linked with first water cabin, right side's fixed bucket, the drain hose is linked with second water cabin, the circumference of drain hose is installed with electromagnetic flowmeter, the upper side of installation box is installed with button switch, power connector and data connector respectively, the front side of installation box inside is provided with fixed cavity, the inside of fixed cavity is installed with control circuit board, the front side of installation box is installed with control touch -sensitive screen, can realize the automation multi -depth sampling, accurate control sampling process to the effective monitoring filter state, prevent the exogenous pollution.

The utility model relates to a novel precise biological sampling net pipe, which belongs to the technical field of net pipes, has a simpler integral structure, and is convenient to properly protect a connecting pipeline matched with a stratified sampling net compared with the prior art, so that the connecting pipeline is prevented from being broken due to water pressure impact, the sampling efficiency and the sampling quality of the stratified sampling net are ensured, and the sampling efficiency and the sampling quality of the stratified sampling net are improved. The protective tube comprises a protective tube main body, the copper alloy net pipe main body is arranged in the protection pipe main body, and a bonding layer containing an anti-corrosion material is arranged between the copper alloy net pipe and the protection pipe main body; the two sealing rings are correspondingly arranged on the inner wall of the protection pipe body, and rubber lantern rings are fixedly connected into the sealing rings; the two positioning rings are fixedly welded to the upper end and the lower end of the protection pipe body through the connecting rings. And the two groups of positioning assemblies are arranged in the positioning ring and are used for fixing and limiting the protection pipe main body at the use position.

The invention relates to the technical field of cement production equipment, and provides a nitrogen oxide collection device for cement production, which comprises a collection tube shell, a sheath, a filter cartridge sampling tube, an air blowing pump and an air suction pump, one end of the collecting pipe shell is used for being communicated with a C1 opening of the flue, and the axis of the collecting pipe shell and the axis of the flue are arranged at an acute angle; the sheath is arranged in the collection tube shell; one end of the sheath is rotationally connected with the other end of the collection tube shell, and the other end of the sheath extends into the flue towards one side close to the flue; a plurality of filtering holes are formed in the other end of the sheath, blades are arranged on the outer side wall of the sheath, and the blades are arranged close to the other end of the sheath; the filter cartridge sampling pipe is arranged in the sheath and is communicated with the sheath; the air outlet end of the air blowing pump is communicated with the filter cartridge sampling pipe; the air inlet end of the air suction pump is communicated with the filter cartridge sampling pipe, and the air outlet end of the air suction pump is connected with a nitrogen oxide detector; the phenomenon that the filter cartridge sampling pipe is blocked by dust is reduced, and the service life of the filter cartridge sampling pipe is prolonged.

The invention belongs to the technical field of sewage treatment, and particularly relates to a sampling detection device for sewage treatment, the sampling detection device comprises a sampling assembly, a plugging assembly and a floating platform assembly, the sampling assembly comprises a sampling rod for fixing a sampling vessel, and the sampling vessel is inserted into a clamping sleeve and a bottom support; the plugging assembly comprises a bottle plug used for plugging an upper bottle opening of the sampling vessel, the floating platform assembly comprises a floating plate floating on the liquid level, a connecting rod used for being in threaded connection with the sampling rod is arranged in the middle of the lower surface of the floating plate, and the movable end of an electric push rod on one side of a second guide wheel arranged on the upper surface of the floating plate is fixedly connected with a hook. The sampling rod for sampling and the sampling vessel on the sampling rod are suspended in sewage needing to be sampled together through the floating platform assembly for sampling, the sampling depth can be accurately adjusted, sampling operation can be carried out on the sewage at different depths at a time, multiple parts of the sewage at one depth can be sampled at a time, the sewage sampling efficiency is greatly improved.

The invention discloses a full-automatic mattress sampling machine which is characterized in that a mattress is fixed in a sample cabin through a micro-elastic self-locking device, the boundary size of the mattress is judged by an image recognizer, and a three-axis six-degree-of-freedom executing mechanism is driven by combining detection standard requirements to complete space positioning of a laser generator; and the mattress is automatically centered and subjected to double-sided synchronous sampling at different depths and different layers. Normative, standard and efficient sampling guarantee is provided for subsequent detection. The sampling requirement of the detection standard is automatically extracted, the boundary sizes of different mattresses are judged through the image recognition system, the three-axis six-degree-of-freedom execution mechanism drives the laser generator to perform space positioning and ultrasonic fine adjustment centering, and the sampling depth and layer are automatically adjusted. Accurate control is performed through closed-loop feedback of the data acquisition unit, so that the sampling efficiency of the mattress is greatly improved, the standard and unified sample is guaranteed, and the quality of the mattress is better controlled.

The utility model relates to the related technical field of water body sampling, in particular to a water body sampling and filtering integrated device which comprises a box body and a filtering mechanism, the filtering mechanism is arranged on one side of the surface of the box body, and a storage mechanism is arranged at one end of the box body. According to the water body sampling and filtering integrated device, through the arrangement of the filtering mechanism, after a storage pipe is installed, a micro water pump is started, the micro water pump can provide suction force and drive liquid to flow through the filtering mechanism, the liquid enters a filtering pipe through an adsorption head, and the liquid passes through a filtering frame and filtering nets at a first groove, the number of the filtering nets is two, and the pore diameters are different; impurities of different sizes can be filtered in a classified mode, filtered liquid passes through the telescopic pipe and the connecting pipe and enters the storage pipe through the micro water pump, so that sampling and basic filtering are completed, meanwhile, the telescopic pipe enables the filtering mechanism to have a certain adjusting range in the sampling process, and the filtering mechanism is suitable for different working conditions.

The invention relates to the technical field of road sampling, and discloses a road test detection sampling structure which comprises a mechanical arm, a mounting plate and a protective cover fixedly connected to the bottom of the mounting plate, and the driving end of the mechanical arm is fixedly connected with the mounting plate. A driving assembly, a hydraulic assembly, a torque adjusting mechanism, a sampler and a water spraying mechanism are arranged in the protective cover; the protective cover is used for covering the outer part of the sampler, and the sampler is used for carrying out roadbed sampling work in the protective cover; the protective cover is connected to the outside of the sampler in a covering manner, so that the sampler performs sampling work in the protective cover, dust dissipation in the sampling process is effectively prevented, interference of the external environment to the sampling process is prevented, the protective cover can reduce the flowing speed of cooling water sprayed by the water spraying mechanism, the cooling water is convenient to gather at the cutting position of the sampler, and the sampling efficiency is improved. Therefore, the cooling effect of the sampler in the sampling process is achieved.

The utility model discloses a sampling tube blocking degree detection device with a purging function, and relates to the technical field of detection sampling. According to the sampling pipe blockage degree detection device with the purging function, a first detection assembly is arranged on a medium pipeline and comprises a first air inlet pipeline, a first back flushing valve, a first detection valve, a first connecting pipeline, a first isolating valve, a first sampling pipeline, a first sampling valve and a first measuring instrument, and a second detection assembly is arranged on the medium pipeline and comprises a second air inlet pipeline, a second back flushing valve and a second detection valve. The second detection assembly comprises a second gas inlet pipeline, a second blowback valve, a second detection valve, a second detection instrument, a second isolation valve, a second sampling pipeline, a second sampling valve, a second measurement instrument and a second connection pipeline, and the first detection assembly and the second detection assembly are arranged to be standby for each other, so that frequent detection of the smoothness of the second sampling pipeline is avoided; the sampling efficiency is reduced because sampling needs to be stopped back and forth, so that the sampling efficiency is ensured when the sampling pipeline II is detected.

The invention discloses a polytetrafluoroethylene granular material sampling device, which comprises a bottom plate, a lifting assembly, a telescopic cylinder, a top plate and a sliding plate, the upper end and the lower end of the lifting assembly are fixedly mounted on the bottom plate and the top plate respectively, moving wheels are arranged at four corners of the bottom of the bottom plate, and the sliding plate is slidably arranged at the top of the top plate. The telescopic air cylinders are symmetrically arranged on the two sides of the sliding plate, piston rods of the telescopic air cylinders are connected with the side wall of the sliding plate, and the sampling assembly is installed at one end of the sliding plate. The lifting assembly can drive the sampling assembly to move up and down, accumulated polytetrafluoroethylene particles can be conveniently sampled, a sampled sample can be conveniently unloaded, it is guaranteed that the device can sample the polytetrafluoroethylene particles with different depths through the arrangement of the multiple sampling rods, and the sampling efficiency and the sampling quality of the device are greatly guaranteed.