53results about How to "Improve sample preparation efficiency" patented technology

The invention discloses an electrolytic double-spraying sample preparation method for analyzing a second phase in a nickel-based superalloy. The method comprises the following steps: (1) pretreating the nickel-based superalloy to obtain a thin sheet with the thickness of 50-100 microns; (2) carrying out electrochemical corrosion on the sheet by adopting an electrolytic double-spraying method to realize passivation protection on a matrix phase, and corroding and dissolving a gamma'phase until a corroded SEM observation sample is obtained; the electrochemical corrosion conditions are as follows: the working voltage is 15-20V; the working temperature is controlled between-20 DEG C and-10 DEG C; and the electrolyte comprises 15-25% of concentrated sulfuric acid and 75-85% of methanol. According to the method, the problem that carbide to be observed phase falls off and is lost due to corrosion of the wrapped matrix can be avoided, meanwhile, the carbide phase and non-metallic inclusions cannot be corroded, the outline of the second phase can be clearly reserved, impurity elements cannot be introduced, element analysis is facilitated, and the method is suitable for analysis of the second phase in the nickel-based high-temperature alloy.

The utility model relates to the technical field of battery experiment equipment, and provides a diaphragm test sampling device which comprises a device frame body, a diaphragm positioning table, a diaphragm limiting part, a driving assembly and a diaphragm cutter assembly, the diaphragm can be conveniently and tightly pressed at the top of the diaphragm positioning table through the diaphragm limiting component, so that the problem of diaphragm deviation in the diaphragm cutting process is avoided, and the diaphragm sampling accuracy is improved; the diaphragm cutter assembly is driven by the driving assembly to perform reciprocating diaphragm cutting action, a manual knocking mode is not needed, the safety is greatly improved, meanwhile, the risk that the edge of the diaphragm is slightly damaged due to manual knocking is reduced, continuous sampling operation can be performed, the sample preparation efficiency is greatly improved, and the labor cost is reduced.

The invention discloses a preparation method of a high-entropy alloy EBSD sample. The method comprises the following steps: 1, cutting a high-entropy alloy sample to be prepared by adopting wire cut electrical discharge machining equipment; 2, polishing the high-entropy alloy sample to be prepared by waterproof abrasive paper to remove a surface oxide layer generated by linear cutting; thirdly, an electrolytic polishing device is built through a power source, an electrolytic bath, electrolyte, an electrode plate and a magnetic stirrer, and then the ground high-entropy alloy sample to be prepared is subjected to electrolytic polishing through a direct-current power source; and 4, the high-entropy alloy to-be-prepared sample obtained after electrolytic polishing is cleaned and blow-dried, and the high-entropy alloy EBSD sample is obtained. The high-entropy alloy EBSD sample is prepared by grinding the cut high-entropy alloy to-be-prepared sample, then carrying out electrolytic polishing and carrying out ultrasonic cleaning and blow-drying, the preparation method is simplified, the sample preparation speed and the sample preparation success rate are improved, the sample preparation cost is reduced, the high-quality surface high-entropy alloy EBSD sample is obtained, and the method is suitable for the field of preparation of the high-entropy alloy EBSD sample.

The utility model belongs to the technical field of geological mineral exploration equipment, and particularly discloses a sample crushing device for geological mineral exploration. A grinding and crushing mechanism of the device is communicated with a crushing mechanism on one side through a discharging pipe; a grinding unit of the grinding and crushing mechanism is arranged above a crushing unit, a feeding port I and an electric telescopic cylinder are arranged at the top end of the grinding unit, a conical grinding hole is formed in the lower portion of the grinding unit, a grinding motor is fixed to a telescopic rod of the electric telescopic cylinder, and a conical grinding roller is fixed to a motor shaft of the grinding motor. The crushing unit is provided with two crushing rollers, a filter screen I is arranged below the crushing rollers, and an inlet of the discharge pipe is arranged above the lowest end of the filter screen I; a smashing motor of the smashing mechanism is fixed to the top end of a smashing box, a smashing rotating rod is rotationally arranged in the smashing box and connected with a motor shaft of the smashing motor, the smashing rotating rod is provided with a plurality of smashing cutters, and a filter screen II is arranged below the smashing cutters in the smashing box. The device disclosed by the utility model has the characteristics of high sample preparation efficiency, difficulty in blockage, good filtering effect and high sampling accuracy.

The invention provides a cotton short fiber rate detection sampling machine. The cotton short fiber rate detection sampling machine comprises a rack, a controller, and a drafting mechanism, a cotton rolling mechanism, a cotton picking mechanism and a circulating cotton guiding mechanism which are arranged on the rack and controlled by the controller, the cotton winding mechanism is located on the discharging side of the drafting mechanism and provided with a clearer roller used for winding cotton fibers, and the peripheral wall of the clearer roller is provided with a needle groove penetrating in the axial direction of the clearer roller. The cotton picking mechanism is located on the side of the clearer roller and provided with a picking needle suitable for penetrating into the needle groove, and the picking needle is used for picking off cotton fibers wound on the clearer roller. One end of the circulating cotton guide mechanism is close to the clearer roller, and the other end of the circulating cotton guide mechanism extends to the feeding end of the drafting mechanism from the lower portion of the drafting mechanism and is used for stripping cotton fibers from the clearer roller and feeding the cotton fibers into the drafting mechanism again. According to the cotton short fiber rate detection sampling machine, manual operation is not needed in the whole sampling process, time and labor are saved, labor is saved, and the sampling efficiency can be remarkably improved compared with the mode that cotton fibers are picked and stripped manually.

The utility model provides a kind of for water stop belt tensile sample preparation, it includes antiskid pad, the antiskid pad is fixed at bottom plate lower surface four corners, the bottom plate upper surface is fixed with jack, the bottom plate upper surface is fixed with pedestal, the pedestal upper end is fixed with hard plastic cushion block, the pedestal upper end is provided with fixed structure, the fixed structure includes pressing bolt and fixed rod;The pedestal front side wall is equipped with ejection structure, the ejection structure includes baffle and rubber column, the rubber column is set on baffle upper surface;It further includes punching structure, punching structure includes tool and bolt, the tool lower end is fixed in the support shaft top of jack by bolt.This puncher can be used for the stamping preparation of water stop belt tensile sample, to replace the traditional manual cutting preparation process in turn, effectively improve the preparation efficiency, and guarantee preparation accuracy.

The present invention relates to the technical field of sample preparation for testing, and discloses a sample preparation device for triaxial testing of granular materials and a method for using the same, that is, on the one hand, when the petals of the molding mold are molded together, by making the bottom of the molding mold sleeve on the top periphery of the mold base and pressing the bottom of the sample wrapping film, the structural stability of the mold during sample preparation can be improved; on the other hand, before sample preparation, the internal ventilation structure of the mold petals can be used to form a negative pressure so that the middle part of the sample wrapping film is stretched and tightly attached to the inner wall surface of the molding mold, which is convenient for laying the sample wrapping film, thereby facilitating the sample preparation efficiency and qualified rate of non-sticky cylindrical samples. In addition, since the triaxial compression test can be conveniently performed on the molded non-sticky cylindrical sample when the petals are opened, compared with the existing vacuum sample preparation method and the freezing sample preparation method, time and steps can be saved, and the efficiency of sample preparation and testing can be greatly improved.

The invention belongs to the technical field of metal surface coating detection, and particularly relates to a sample preparation method and device for testing the peel strength of a self-adhesive coating silicon steel floating roller. The clamping ends are completely isolated, so that one-time sample preparation and multi-time detection are realized; in the bonding process, the pressure is continuously and stably controlled without attenuation along with the compression of the coating, a sample prepared according to a specified process is obtained, and the result is accurate; the device can set pressure, temperature and time in a common range, does not need tools, and is wide in applicability. The method can be suitable for detecting the peel strength of the floating roller of oriented and non-oriented silicon steel with different thicknesses and other self-adhesive coating products. The sample preparation efficiency and the detection precision are greatly improved.

The invention provides a test sample and a preparation method thereof, and the preparation method comprises the steps: forming an initial sample: forming a groove in a semiconductor substrate layer, and enabling the groove to extend into a part of the semiconductor substrate layer from one side surface of the semiconductor substrate layer; forming a superlattice layer on the inner wall of the groove and the surface of the semiconductor substrate layer at the side part of the groove; forming an insulating protection layer on the surface of one side, deviating from the semiconductor substrate layer, of the superlattice layer; forming a conductive layer on the surface of one side, deviating from the superlattice layer, of the insulating protection layer, wherein the groove in one side, deviating from the insulating protection layer, of the conductive layer serves as a gap; and cutting the initial sample by adopting a focused ion beam to form a test sample, and enabling a cutting surface adopted by cutting to pass through the gap and to be vertical to the semiconductor substrate layer.

The invention discloses a metal sample chip pre-freezing sample preparation method. The method comprises the following steps: S1, pre-freezing treatment; the method comprises the following steps: firstly, uniformly mixing metal sample chips, dividing and putting the metal sample chips into a sample container, then pouring liquid nitrogen into the sample container or putting the sample container into low-temperature refrigeration equipment, and carrying out ultralow-temperature freezing pretreatment on the metal sample chips to obtain a pre-frozen sample; s2, cutting and sieving; starting a sampling machine to idle, and then pouring the pre-frozen sample into the sampling machine for cutting, crushing and screening to obtain an oversize sample and an undersize sample; s3, sample preparation and sealing; uniformly mixing and dividing the sample into four parts according to a quartering method to obtain a metal sample, and sealing and storing the metal sample with aluminum foil bags respectively. According to the method, the metal sample scraps are subjected to ultralow-temperature freezing pretreatment before sample preparation, the dislocation density of the metal sample scraps is increased, dislocation is difficult to move under the ultralow-temperature effect, stress is no longer relieved through plastic deformation when metal is subjected to external force, brittleness is enhanced, brittle fracture is easier to occur, and the sample preparation efficiency and the sample preparation quality are improved.

The utility model provides a metallographic specimen embedding device and relates to the technical field of metallographic specimen preparation. The metallographic specimen embedding device comprises a preparation assembly, a vacuum pump assembly and a vibration stirring feeding assembly, the preparation assembly is provided with a preparation cavity, an inlaying mold is fixedly arranged on the bottom wall of the preparation cavity and used for placing a test piece, and a communicating hole is formed in the top wall of the preparation cavity and corresponds to the inlaying mold; the vacuum pump assembly communicates with the preparation cavity and is used for vacuumizing the preparation cavity; and the vibration stirring feeding assembly communicates with the communicating hole and is used for filling the inlaying material subjected to vibration stirring into the inlaying mold. According to the metallographic sample inlaying device, the binding force between the test piece and the inlaying material can be improved, the probability that the test piece is separated from the inlaying material in the metallographic sample preparation process is reduced, meanwhile, bubbles in the inlaying material are reduced, and the sample preparation effect is improved.

The utility model discloses a moving and overturning device for a glass experiment. The moving and overturning device comprises a moving carrier, an overturning platform, a limiting plate and a clamp, the movable carrier is installed on the limiting plate, the overturning platform is rotatably installed on the movable carrier through a rotating shaft, a bottom plate is arranged at the bottom of the overturning platform, a bottom face heat insulation plate is arranged on the bottom plate, a first vertical plate is arranged on one side of the overturning platform, second vertical plates are connected to the two sides of the first vertical plate, and a first vertical face heat insulation plate is arranged on one side of the first vertical plate. A second vertical face heat insulation plate is arranged on one side of the second vertical plate, the first vertical plate and the second vertical plate form a U-shaped frame, and one end of the clamp is supported on the movable carrier. According to the utility model, the platinum crucible and the lining thereof can be quickly moved out of the heating furnace platform through the moving and turning device, and molten materials are quickly poured into a preset sample preparation mold by using the turning platform, so that the success rate of sample preparation of the large-capacity platinum crucible is improved, and the safety risk in the process is reduced.

The utility model discloses a lap joint shear sample preparation tool which comprises a first base, first check blocks are arranged on the two sides of the upper surface of the first base, a first installation groove is defined between the two first check blocks and the upper surface of the first base, and the first installation groove is used for installing a first sample to be bonded; the second base is arranged opposite to the first base, second check blocks are arranged on the two sides of the upper surface of the second base, a second mounting groove is defined between the two second check blocks and the upper surface of the second base, and a second to-be-bonded sample is mounted in the second mounting groove; the first cover plate covers the two first check blocks so as to press the first to-be-bonded sample, after the first to-be-bonded sample and the second to-be-bonded sample are bonded together through the adhesive, a sample preparation worker can use a scraper blade and other tools to scrape off overflowing glue in a bonding area, and therefore rapid sample preparation of the lap joint shear sample is achieved, the sample preparation quality is guaranteed, and meanwhile the sample preparation efficiency is improved. And the sample preparation efficiency is also improved.

The invention discloses a preparation method of a microsphere debonding test sample and a microsphere debonding test method. The preparation method comprises the steps that a supporting plate is provided, and a through hole is formed in the supporting plate; the fiber monofilaments are placed on the supporting plate, the fiber monofilaments are bonded to the supporting plate through a bonding agent, and part of the fiber monofilaments are located at the through holes; the melting point of the binder is 125-140 DEG C; coating the resin liquid on the fiber monofilaments at the through holes to form a preset number of resin microspheres on the fiber monofilaments to obtain a prefabricated sample; and curing the prefabricated sample under a preset condition to obtain the microsphere debonding test sample. According to the method, the high-melting-point binder is matched with the fiber monofilament supporting sheet to assist in sample preparation, so that the tolerance of the sample in the sample preparation stage is enhanced, the breakage rate of the test sample in the sample preparation process is reduced, the test cost is reduced, and the sample preparation efficiency is improved; abnormal values are counted, analyzed and eliminated through a Labs test method, and the accuracy and reliability of a test result are ensured.

The utility model relates to the technical field of sample preparation equipment, in particular to a simple sample preparation machine for a thick-wall PVC pipe sample. Comprising an upper die device and a lower positioning device, the lower positioning device comprises a bottom plate, a movable plate, a base plate and a jack, and the upper die device comprises an upper fixing plate, a connecting plate and a material pressing die; the jack is fixedly connected with the bottom plate, the movable plate can move up and down under the action of the jack, the upper fixed plate is elastically connected with the movable plate, and the base plate is fixedly connected with the movable plate; the pressing die for sample preparation is arranged below the connecting plate; the upper mold device is further provided with a sample plate demolding pin and a reset spring which are used for enabling the upper mold device to reset automatically after sample preparation. According to the thick-wall PVC pipe tensile sample manufacturing machine tool, large-diameter thick-wall pipe samples can be manufactured according to the shapes of the test pieces, the sizes of the manufactured samples meet the standard requirement and have accuracy, the sample manufacturing machine is simple in structure, small in size and convenient to operate, and the tensile detection requirement of the samples is met.

The invention discloses a device and a method for preparing a coarse-grained cobalt hydroxide sample, the device comprises a vibrating feeder, a grinding cabin and a material receiving barrel which are sequentially arranged from top to bottom, a rotary tool bit is rotatably connected in the grinding cabin, and a standard sieve is arranged in the circumferential direction of the inner wall of a cabin body of the grinding cabin by taking the rotary tool bit as the center. The sample preparation step comprises vibration screening, cutting and grinding, screening and collecting, and sample preparation and sealing. Coarse-grain cobaltous hydroxide is cut and crushed by adopting the rotary tool bit, it is ensured that the coarse-grain cobaltous hydroxide is cut around the rotary tool bit as far as possible after being subjected to centrifugal force and negative pressure suction force in the cutting process, the cut coarse-grain cobaltous hydroxide is ground through the grinding cabin, automatic screening is combined with the standard screen, and undersize samples fall into the material collecting barrel; cutting, grinding and sieving are carried out at the same time, the problems that traditional sample preparation is large in labor intensity and makes contact with much dust are solved, and the sample preparation efficiency and the sample preparation quality are improved.

The utility model discloses a temperature-controllable glue coating and scraping integrated device for an experiment. The temperature-controllable glue coating and scraping integrated device comprises a bottom plate, a movable plate, a driving mechanism and a heating assembly, a fixing plate is arranged on one surface of the bottom plate, a guide rod is arranged on one surface of the fixing plate, the axis direction of the guide rod is the same as the length direction of the bottom plate, a glue scraping plate and a mounting seat are movably arranged on a rod body of the guide rod, and vertical projections of the glue scraping plate and the mounting seat fall on the surface, provided with the fixing plate, of the bottom plate; the movable plate is movably connected to one end, deviating from the fixed plate, of the guide rod, and has a moving trend towards the direction of the fixed plate; the driving mechanism is arranged on the fixing plate and used for driving the glue scraping plate to move in the length direction of the bottom plate. And / or the heating assembly is arranged on the mounting seat and / or the surface, provided with the fixing plate, of the bottom plate. According to the sample preparation device, the fluidity of an adhesive sample can be continuously kept in the sample preparation process, the problems that the adhesive sample slips due to high viscosity and cannot be uniformly coated during sample preparation are solved, the sample preparation difficulty is effectively reduced, and the sample preparation efficiency is improved.

The utility model relates to an adhesive sample preparation device which is used for preparing a test sample piece. The adhesive sample preparation device comprises a plurality of sample preparation modules which are arranged at intervals so as to improve the sample preparation efficiency, and second connecting pieces are arranged between the adjacent sample preparation modules so as to connect the sample preparation modules. The sample preparation module comprises a first operation table and a second operation table which are arranged at an interval; a limiting assembly is arranged on the first operation table, a first test plate in the test sample piece is placed in a limiting area of the limiting assembly, a second test plate is placed in a first limiting groove of the second operation table, the first limiting groove and the limiting area are located on the same straight line, and the bottom wall of the first limiting groove is higher than the table top of the first operation table. The first test plate abuts against the second operation table to limit the position of the first test plate, the two cushion blocks in the test sample piece are arranged on the first test plate at intervals, and a gluing area is formed between the two cushion blocks. The limiting assembly moves in the length direction of the adhesive sample preparation device so as to adjust the length of the adhesive coating area through the distance between the two cushion blocks.

The utility model provides a lithofacies sample preparation cold inlaying mold which comprises a hollow cylindrical mold body, a partition plate is detachably installed in the mold body, and the partition plate can divide an inner cavity of the mold body into two independent spaces with the same size; two grooves are oppositely formed in the inner side face of the mold body and are formed in the axial direction of the mold body. The two ends of the partition plate are detachably installed in the two grooves. According to the technical scheme of the utility model, the problems that the gravity differentiation cannot be effectively controlled and the operation is complicated and many steps exist in the existing lithofacies cold embedding sample preparation technology are solved.

The utility model provides a coal sample preparation device. The coal sample preparation device comprises a dispersing assembly arranged at the upstream of a feeding piece, the dispersing and stirring device comprises a first shell and a dispersing and stirring part arranged in the first shell; a coal sample enters the first shell and is stirred and dispersed by the dispersing and stirring part; the anti-blocking crushing assembly is arranged at the downstream of the feeding piece; the hammer head assembly comprises a second shell, a hammer head assembly and a sieve plate piece; the hammerhead assembly comprises a hammerhead arranged in the second shell, and a coal sample in the second shell is crushed through rotation of the hammerhead; and the sieve plate part is arranged below the hammer head and is used for sieving the crushed coal sample. The coal sample preparation device can effectively solve the problems of blockage of the feeding port, blockage of the crushing device, reduction of sample preparation precision, low working efficiency and the like in the coal sample preparation process, so that the sample preparation efficiency is effectively improved, blockage of the crushing device is avoided, the sample preparation accuracy and the test accuracy are improved, and a more accurate settlement basis is provided for coal trade.

The invention discloses a preparation method of a section sample. The preparation method comprises the following steps: step 1, forming a first mark for coarse positioning; 2, measuring the relative distance between the first mark and the target structure on the chip sample; and step 3, forming a plurality of FIB marks for fine positioning according to the relative distance, wherein the FIB marks comprise a second mark, a third mark, a fourth mark and a fifth mark. The second mark and the third mark extend in the Y direction and are distributed on the two sides of the target structure in the X direction. The fourth mark extends in the X direction and is located at a first presentation distance on an upstream side in the Y direction of the target structure. The fifth mark comprises a flush structure flush with the X-direction extension section of the target structure, and a first straight line and a second straight line which are connected with the flush structure and located on the upstream side of the flush structure. And step 4, performing sample preparation and grinding, namely grinding until a fourth mark is observed. And grinding is continued until the flush structure of the fifth mark is observed. According to the invention, efficient fixed-point preparation and efficient fixed-point analysis of the section sample can be realized.

The utility model discloses a fiber section sample preparation cutting device which comprises an operation table, a supporting part, a fixing part and a cutting part, the supporting part is arranged above the operation table, a connecting part is arranged on the supporting part, and the connecting part is rotationally connected with the supporting part; one end of the fixing part is detachably connected with the connecting part, the fixing part is perpendicular to the supporting part, the fixing part is used for fixing fibers, one end of the cutting part is detachably connected with the connecting part, the cutting part is perpendicular to the supporting part, and the cutting part is used for cutting the fibers. In this way, the connecting part is rotationally connected with the supporting part, so that the fixing part and the cutting part can rotate around the supporting part, the cutting angle and position of fibers are conveniently adjusted, the requirements of different section shapes are met, the cutting part is perpendicular to the supporting part, it is ensured that the cutting direction is perpendicular to the axial direction of the fibers, and section deformation caused by inclined cutting is reduced; and the stability of the fiber section sample preparation effect is improved.

The present invention relates to a plant short fiber tensile sample preparation apparatus, which comprises: a bottom plate, which is prepared from silica gel, and is provided with a resin groove hole; wherein the number of the resin groove holes is at least two, and a connecting groove is arranged between each resin groove hole and the adjacent resin groove hole. The invention further relates to an application method of the sample preparation device for the plant short fiber tensile sample. According to the sample preparation device, the silica gel is adopted to prepare the bottom plate, the bottom plate prepared from the silica gel is not adhered to the resin, and the resin groove holes are formed in the bottom plate, so that the size of the solidified resin can be conveniently controlled, and the preparation efficiency and the success rate of the plant short fiber tensile sample are improved.

The utility model discloses a grinding and polishing clamp for an amorphous sample, belongs to the technical field of clamping tools, solves the problem that the amorphous sample is difficult to fix by the existing clamp, and adopts the technical scheme that the grinding and polishing clamp for the amorphous sample comprises a connecting cylinder and an adjusting ring, one end of the connecting cylinder is slidably connected with a plurality of clamping jaws, a clamping area for clamping an amorphous sample is formed among the clamping jaws, the adjusting ring is in threaded connection with the clamping jaws, the adjusting ring drives the clamping jaws to slide so as to enable the end parts of the clamping jaws to be close to or separated from each other, one end, far away from the clamping jaws, of the connecting cylinder is provided with a loading rod, and the connecting cylinder is provided with a through hole communicated with the clamping area. The loading rod extends into the clamping area from the through hole and is used for abutting against the end of the amorphous sample, and the connecting cylinder is provided with an adjusting piece for driving the loading rod to be close to or away from the end of the clamping jaw. The amorphous sample clamping device is mainly used for adapting to amorphous samples of different specifications, and clamping of the amorphous samples is firmer and more reliable.

The invention discloses a soil detection device for ecological restoration, which relates to the field of soil detection and comprises a detection box, wherein a sampling assembly for segmenting soil is arranged at one end of the top of the detection box, and an assembly line for soil sampling pretreatment is arranged inside the detection box and below the sampling assembly, wherein the assembly line is designed with at least three groups and is layered and distributed from top to bottom; the assembly line comprises a transport assembly, a sorting assembly and a drying assembly; wherein the transport assembly comprises a sample box and a multi-section electric push rod, wherein the sample box is used to receive the soil segmented by the sampling assembly, and the multi-section electric push rod is used to enable the sample box to pass through the sorting assembly and the drying assembly; wherein the sorting assembly comprises a vibration mechanism and a turning mechanism, wherein the vibration mechanism is used to achieve vibration dispersion of the soil in the sample box, and the turning mechanism is used to achieve crushing and turning of the soil in the sample box; wherein the drying assembly comprises an electric heating wire for achieving heating and drying, and the sample preparation efficiency is greatly improved.

The invention discloses a drying device, and relates to the technical field of coal sample preparation. The drying device comprises a placing piece and a vacuuming component, wherein a receiving chamber is provided in the placing piece, and the coal sample is placed in the receiving chamber, and an opening is provided on the chamber wall on any side of the receiving chamber, and a cover plate is provided on the opening to achieve sealing of the placing piece; the vacuuming component is connected to the receiving chamber to extract the air in the receiving chamber, so that the coal sample is under negative pressure conditions, thereby reducing the boiling point and melting point of the coal sample; the drying device also comprises a liquid inlet component, which is connected to the receiving chamber to input liquid nitrogen into the receiving chamber to achieve freeze drying of the coal sample; or the placing piece comprises an inner shell and an outer shell, the inner shell is arranged in the outer shell, the receiving chamber is arranged in the inner shell, a heating chamber is arranged between the inner shell and the outer shell, and a high-temperature medium is arranged in the heating chamber to achieve heating and drying of the coal sample, and the above arrangement not only improves the drying efficiency of the drying device, but also the two different drying methods improve the applicability of the drying device.

The invention relates to the technical field of soil sample detection, in particular to sample storage equipment and a sample storage method for soil microorganism detection. Comprising a base, a storage chamber mounted on the base, a top cover in threaded connection with the storage chamber, a sample preparation assembly and a crushing assembly which are mounted on the top cover, a blanking assembly mounted on a discharge port of the sample preparation assembly, a bearing assembly mounted on the base, and a transmission assembly and an air drying assembly which are mounted on the bearing assembly, a grinding head is installed on the crushing assembly, a plurality of sample bottles are installed on the transmission assembly, the transmission assembly is used for driving the sample bottles to rotate with the vertical center line of the storage chamber as the axis, and the crushing assembly is used for driving the grinding head to rotate and move up and down in the vertical direction; through cooperation of the crushing assembly and the transmission assembly, automatic multi-sample subdivision filling can be carried out in the storage chamber, manual filling is avoided, and the sample preparation efficiency is improved.

The present invention relates to a device and method for preparing an original soft clay sample by low-position vacuum loading combined with pre-pressing, the device comprises a model box system and a vacuum pump system; the model box system comprises a model box and a stack of carrier plates, a sealed top cover is arranged on the top of the model box for sealing the model box, and an air extraction hole is arranged on the side wall of the model box at a certain distance from the bottom of the model box; a cross-shaped vacuum filter tube is arranged at the bottom of the model box; a plurality of plastic drainage belts are arranged closely to the inner wall of the model box; any end of the vacuum filter tube is connected to the air extraction hole, and the other end is closely to the bottom of the plastic drainage belt; the vacuum pump system comprises a water ring vacuum pump with a water vapor separation box; the water ring vacuum pump is connected to the air extraction hole on the model box through an air extraction pipe. The method is to inject mud into the model box, first drain and consolidate under the action of dead weight, and then vacuum consolidate to obtain the original soft clay sample. The method of the present invention can ensure the uniformity of sample moisture content, density and strength.

The invention discloses a soft soil pre-consolidation sample preparation device which comprises a reaction frame, a sample cylinder and a force application frame, a connecting seat is arranged on a bottom plate of the counter-force frame and is connected with a drainage valve; the bottom end of the sample cylinder is detachably connected with the connecting seat, the top end and the bottom end of the sample cylinder can be detachably connected with the connecting seat, and the installation direction of the sample cylinder can be repeatedly switched in the sample preparation process; a pressure head is arranged at the bottom of the force application frame and is in sliding connection with the inner wall of the sample cylinder. According to the soft soil pre-consolidation sample preparation device provided by the invention, the sample cylinder can be detached from the connecting seat, and the mounting direction can be repeatedly switched in the sample preparation process, so that the load applying direction is changed, the friction influence of the side wall of the sample cylinder is eliminated, the moisture content in a soil sample is uniformly distributed, and the sample preparation quality is ensured.

The utility model discloses a novel soil engineering simple evaporimeter sample cylinder which comprises a sample cylinder, at least two tensiometers and a support assembly, the support assembly comprises a support and a support elastic piece, two ends of the support elastic piece are respectively connected with the support and the side wall of the sample cylinder, one end of the tensiometer is connected with the support, and the other end penetrates through the side wall of the sample cylinder to contact with a soil sample in the sample cylinder. The tensiometer is inserted into the side wall of the sample cylinder and installed on the support, the support elastic piece pulls the support to move towards the sample cylinder, so that the tensiometer abuts against a soil sample in the sample cylinder, the integrity of the soil sample is guaranteed, the situation that holes are dug in the soil sample for installing the tensiometer is avoided, meanwhile, the tensiometer cannot block water evaporation of the soil sample, and the soil sample is not damaged is avoided. The condition that the moisture evaporation of the soil sample is influenced by the tensiometer is avoided, the accuracy of data is ensured, and the measurement error is reduced. Besides, the detachable cover plate is additionally arranged at the end part of the sample cylinder, so that the two processes of compaction and saturation of the soil sample can be carried out in the same sample cylinder, and the sample preparation efficiency is improved.