2716results about "Enclosures/chambers" patented technology

The invention discloses a method for monitoring the corrosion capacity of a circulating salt spray test chamber, and relates to the technical field of aluminum alloys. The method comprises the following steps of test preparation, device configuration and environment debugging, test process management, monitoring and recording, corrosion degree evaluation and report arrangement and summarization. The test box comprises a box body, a positioning mechanism is mounted in the box body, a spraying mechanism is mounted at the top end of the inner wall of the box body, the positioning mechanism is located below the spraying mechanism, a lifting mechanism is mounted on the peripheral wall of the box body, and a collecting mechanism is mounted at the bottom end of the inner wall of the box body; by arranging the positioning mechanism, aluminum alloy materials of different specifications can be positioned, meanwhile, aluminum alloy can be turned over and rotated, then the aluminum alloy can be sprayed more uniformly and comprehensively through the spraying mechanism, so that it is ensured that salt mist uniformly and comprehensively covers the surface of a sample, and the quality of the sample is improved. And the accuracy of test data can be improved.

The invention provides a weather-proof test system for an abnormal sound vibration test. The weather-proof test system comprises an environment box and abnormal sound test equipment, the environment box comprises a base table and a box body, a temperature adjusting chamber is formed in the box body, the base table is provided with a carrying base face located on the lower side of the temperature adjusting chamber, the base table is provided with a heat insulation chamber sunken relative to the carrying base face, and the heat insulation chamber is separated from the temperature adjusting chamber through a heat insulation plate; the abnormal sound testing equipment comprises a driving mechanism, a transmission mechanism and a bearing mechanism, the driving mechanism comprises a vibration exciter, the vibration exciter is arranged in the isolation chamber, and the transmission mechanism and the bearing mechanism are arranged above the carrying base plane. Different parts of the abnormal sound testing equipment are separated by arranging the temperature adjusting chamber and the heat insulation chamber, the transmission mechanism and the bearing mechanism of the mechanical part are arranged in the temperature adjusting chamber, and the driving mechanism of the electrical part is arranged in the heat insulation chamber, so that the requirement of a weather-proof test can be met, and the working stability of the vibration exciter can be ensured.

The invention relates to the technical field of capacitor aging test, in particular to a capacitor high-low temperature fast switching aging test device and method. Comprising a high-temperature box and a low-temperature box, a transmission mechanism is arranged on one side wall of the high-temperature box, and a first linkage block is clamped to one side wall of the high-temperature box; one side of the first linkage block is rotatably connected with a loading block, and the upper and lower ends of the loading block are movably clamped with a plurality of groups of capacitors; the two groups of connecting blocks are fixedly connected with the side wall of the low-temperature box; the transmission mechanism drives the loading block to move into the high-temperature box, so that the capacitor inserted into the bottom end of the loading block enters the high-temperature box for high-temperature aging test, the transmission mechanism drives the loading block to move out of the high-temperature box, and meanwhile, the loading block drives the capacitor to turn over, so that rapid position switching of the capacitor is realized. And the low-temperature box and the loading block are rapidly clamped, so that rapid cooling of the capacitor is realized.

The invention discloses a throwing test system for a suspended launching device in a temperature shock environment. The throwing test system comprises a walk-in test box, a throwing frame, a movable hanger throwing device, a locking device, a limiting protection device, a transfer trolley and a throwing buffer recovery tank. By designing the launching test system for the suspension launching device in the temperature shock environment, environmental conditions with climate can be applied to the suspension launching device, transfer can be completed within 1 min, fixed-point launching, free and rapid transfer and stable suspension of the simulated projectile can be achieved, and the simulation projectile can be conveniently and rapidly launched. The device has the functions of installing, transferring and throwing the simulated bomb, rapidly impacting temperature and humidity, safely transferring, recycling and the like, solves the problem of size limitation of throwing of various types of launchers and large-size simulated bombs, and can realize throwing assessment of the suspended launcher in a conventional environment with climate and a temperature impact environment.

The present invention relates to the technical field of plastic aging evaluation, and specifically to a plastic aging performance evaluation instrument, comprising a chassis; a take-in and put-out port, which is opened on the side of the chassis; a cover plate, which is arranged on the inner side of the take-in and put-out port; a plurality of solar light panels, which are distributed in a linear array and fixedly installed on the inner top surface of the chassis; and a driving structure, which is arranged on the chassis and is used to drive the plastic parts to rotate. Compared with the prior art, the present application drives the rotating frame by a driving motor to realize the rotation of the rotating frame, thereby driving the clamping frame to revolve. At the same time, due to the meshing of the transmission gear and the fixed gear ring, the clamping frame can also realize self-rotation during the revolution. This combination of revolution and self-rotation ensures that the clamped plastic parts can be turned over in all directions and without dead angles, so that their outer walls can be fully irradiated. This rotation design not only improves the irradiation efficiency, but also ensures the uniformity of irradiation.

The utility model belongs to the technical field of temperature control equipment, and particularly relates to a gas-liquid double-cooling low-temperature thermostatic bath which comprises a machine body, a bath body and a refrigeration mechanism, and the bath body and the refrigeration mechanism are located in the machine body. The refrigerating mechanism is connected with a condensate coil pipe in the tank body, the tank body is connected with a liquid inlet and a liquid outlet, and liquid in the tank body circulates or circulates through the liquid inlet and the liquid outlet. A gas coil pipe is further arranged in the tank body, a gas inlet connector and a gas outlet connector are arranged on the side face of the machine body, and gas enters the gas coil pipe through a pipeline and the gas inlet connector and flows out of the gas outlet connector after being cooled by liquid in the tank body. The liquid and gas cooling device can meet the cooling requirements of liquid and gas, is suitable for wider experiment or industrial application scenes, is particularly applied to the working condition that the liquid and the gas are cooperatively cooled, has higher adaptability, can better keep the consistency and the stability of the temperature, and saves time and resources.

The present invention discloses a high and low temperature performance test box based on a mixed refrigerant and a control method, including a box body, a refrigeration chamber, a heating chamber, an electric refrigeration device, an electric heating device, and a support roller. The upper part of the box body is provided with a refrigeration chamber that penetrates forward, and the bottom is provided with a heating chamber that penetrates forward. The refrigeration chamber is provided with an electric refrigeration device, and the electric refrigeration device uses a mixed refrigerant for refrigeration, and the heating chamber is provided with an electric heating device. During the temperature test of the present invention, the heat transfer oil in the heat preservation tank is refluxed into the heat dissipation pipe by controlling the lifting mechanism to rise, and then the electric control stop valve is controlled to be cut off, and the electric heating device and the electric refrigeration device are controlled to be powered on to work. At this time, the heat transfer oil in the heat dissipation pipe can absorb the heat generated by the electric heating device, but the heat will not be dissipated to the outside to cause waste, but will be retained in the heating chamber to heat the object being tested.

The invention relates to a space experiment sample observation mechanism, a space experiment device and a fluid physics experiment cupboard, the space experiment sample observation mechanism comprises a plug connector, a sample sleeve and a first heating sheet, the first heating sheet is arranged on the sample sleeve, one end of the sample sleeve is fixed on the back side surface of the plug connector, and the other end of the sample sleeve is fixed on the back side surface of the plug connector; a sample clamping part is arranged at the other end of the sample sleeve; the sample clamping part comprises a circular-arc-shaped sample clamping piece with an opening in the upper side, a bottom connecting piece and a cylindrical sample clamping piece, the sample sleeve, the circular-arc-shaped sample clamping piece and the cylindrical sample clamping piece are coaxially arranged, and the sample sleeve, the circular-arc-shaped sample clamping piece, the bottom connecting piece and the cylindrical sample clamping piece are sequentially connected; the bottom of the arc-shaped sample clamping piece is fixedly connected with the bottom of the cylindrical sample clamping piece through a bottom connecting piece, a sample observation interval position is reserved between the arc-shaped sample clamping piece and the cylindrical sample clamping piece, and a sample observation opening position penetrating in the direction perpendicular to the axis of the cylindrical sample clamping piece is formed in the side wall of the cylindrical sample clamping piece.

The utility model relates to a rotary sample holder and an oven in the technical field of material testing. The rotary sample holder comprises a main shaft; the two circular ring fixers are coaxially arranged on the main shaft respectively, and the two circular ring fixers are arranged on the main shaft in a spaced mode; the plurality of sample holders are uniformly divided into two groups, and the two groups of sample holders are respectively mounted on the two circular ring fixers; the driver is arranged on the main shaft and used for driving the main shaft to rotate around the axis of the main shaft. The rotary sample holder can ensure that each group of samples are heated consistently and uniformly in the test process, and the accuracy of a rubber aging test result is improved.

The invention discloses an experiment box for raw material medicine azacitidine, and relates to the technical field of experiment equipment, the experiment box comprises a box body and a sealing device, the left side of the box body is fixedly provided with a temperature control device, the left side of the temperature control device is fixedly provided with a button, the button is electrically connected with the temperature control device, and the front side of the box body is provided with a replacement hole. A replacing plate is slidably mounted on the front side of the box body, a sealing plate slidably penetrates through the right side of the box body, the sealing device comprises a limiting hole, a limiting rod, a limiting spring, a U-shaped rod, a T-shaped plate, a stabilizing plate and a net-shaped frame, and after an experimental container containing azacitidine is placed into the box body, the sealing plate is manually pulled to move leftwards to reset and recover sealing of the box body; when the azacitidine is degraded, moisture in air can enter the box body due to loosening of the sealing plate, so that degradation of azacitidine is accelerated, it can be ensured that the sealing plate is always tightly closed through mistaken touch prevention limitation of the T-shaped plate, and therefore the stability of azacitidine is ensured.

The invention discloses a walk-in high and low temperature test box for automobile testing in the technical field of walk-in high and low temperature tests for automobile testing, which comprises a high and low temperature test box body, a sealing opening and closing door is arranged on one side of the high and low temperature test box body, and a temperature output assembly is arranged on the other side of the inner cavity of the high and low temperature test box body. According to the invention, refrigeration and heating cycle adjustment is facilitated through the temperature output assembly, independent work output of refrigeration and heating equipment is not needed, the configuration cost is low, the operation is simple, the operation is convenient, the cost is low, the operation is convenient, and the test efficiency is high. The space occupation ratio is small, operation is convenient and fast, during refrigerating or heating, the motor execution end drives the other end of the connected worm to be rotationally connected to the side wall of an inner cavity of the square shell for supporting rotation, and rotation of the worm drives a worm gear meshed with one side to be rotationally connected with an inner ring of a bearing part through the bottom for fixed supporting rotation.

The utility model discloses an internal lifting type high-low temperature test box which comprises a test box body, a high-temperature bin and a low-temperature bin which are longitudinally arranged from top to bottom are arranged in the test box body, placing boxes are arranged at the side ends of the high-temperature bin and the low-temperature bin, a heating assembly is arranged in the high-temperature bin, and a refrigerating assembly is arranged in the low-temperature bin. A heat insulation plate is arranged between the high-temperature bin and the low-temperature bin, a lifting opening is formed in the middle of the heat insulation plate, and a storage inner box is arranged in the high-temperature bin or the low-temperature bin; a lifting driving mechanism is fixedly arranged in the containing box, the driving output end of the lifting driving mechanism is vertically upward and fixedly connected with one end of a transmission assembly, and the other end of the transmission assembly penetrates through the high-temperature bin from the top to stretch into the high-temperature bin or the low-temperature bin to be fixedly connected with the top of the inner containing box. According to the utility model, the high and low temperature switching efficiency of a product in a high and low temperature test scene is improved.

The utility model discloses a formaldehyde purification rate detection device for diatom ooze, which relates to the technical field of formaldehyde adsorption detection and comprises a detection box, a displacement unit is arranged in the detection box, a formaldehyde detector, a material vibrating unit and a buffer unit are mounted on the displacement unit, and a placement frame is mounted on the buffer unit. And the placing frame is in threaded connection with a bolt and is in sliding connection with a material placing box. The formaldehyde detection device has the beneficial effects that the positions of a material placing box and a formaldehyde detector in the detection box are adjusted through a lifting mechanism, a first mounting frame, a first screw rod, a first motor, a second mounting frame, a second motor, a second screw rod and a placing frame, so that materials in the material placing box can absorb formaldehyde at different positions in the detection box; the formaldehyde adsorption efficiency is improved, the adsorption time is shortened, different positions in the detection box are detected through the formaldehyde detector, and the detection accuracy and efficiency are effectively improved.

The invention discloses a delivery window with a through-wall system, a sterile solution transfer system and an operation method of solution cross-regional transfer, and belongs to the technical field of sterile solution transfer. The sleeve penetrates through the wall, one end of the sleeve extends into the cavity of the VHP delivery window, and the other end of the sleeve is located on the outer side of the VHP delivery window; blind plates are arranged at the two ends of the sleeve, and chucks are arranged on the blind plates. Compared with a wall penetrating system installed on a solid wall of a clean area, the VHP delivery window is provided with a glass visual window, operators in the two areas can conveniently observe the solution delivery progress in real time, and personnel operation is better facilitated; vHP disinfection can be performed on the through-wall system after the operation is finished, so that the biological safety is further guaranteed.

The invention relates to the technical field of optical communication, and discloses a universal optical module full-temperature test board, which comprises a test assembly, a temperature environment cavity, an optical module, an optical module, a temperature sensor and a control module, and is characterized in that the test assembly provides a module test jig and a temperature environment cavity; according to the optical module testing device, the testing assembly, the preheating assembly, the box body assembly and the heating stage assembly are combined, seamless connection from preheating to testing of the optical module is achieved, the testing efficiency and the temperature control precision are improved, the testing assembly is combined with a water cooling head, a refrigeration sheet, a first heating pipe, a second heating pipe, a third heating pipe and other key components, and the testing efficiency is improved. The temperature in the test fixture can be accurately controlled in cooperation with PID algorithms of the first temperature sensor, the second temperature sensor and the third temperature sensor, so that a stable test environment is provided for the optical module, meanwhile, the preheating assembly ensures that the optical module reaches the required target temperature in the preheating stage through linkage control of the second heating pipe and the second temperature sensor, and the test efficiency is improved. And interference on a test result due to too high or too low temperature is avoided.

The utility model relates to the technical field of food safety detection, in particular to a one-stop food detection pretreatment test bench which comprises a fuming cupboard, the inner side of the fuming cupboard is fixedly connected with a moving seat and a sample introduction module, the inner side of the fuming cupboard is movably connected with a turntable, the inner side of the fuming cupboard is provided with a centrifugal machine, and the centrifugal machine is connected with a control module. A first manipulator and a second manipulator are arranged on the inner wall of the fuming cupboard, an air blowing assembly, an oscillator and a liquid adding assembly are arranged on the surface of the fuming cupboard, an incubator is slidably connected to the surface of the moving seat, and a protective door is movably connected to the surface of the incubator. According to the utility model, equipment required by detection is concentrated, so that the detection operation and the detection earlier stage treatment are facilitated, the efficiency is improved, samples are prevented from being polluted by the outside, the accuracy and the consistency of detection data are improved, and the labor intensity of detectors is reduced.

The invention discloses a blood sampling heat preservation device for animal epidemic disease detection, which comprises a storage box, a heat preservation cavity is arranged in the storage box, a plurality of groups of heating rods are arranged in the heat preservation cavity, an annular conveying belt is arranged in the heat preservation cavity, a plurality of groups of bottle placing seats which are arrayed at equal intervals are arranged on the annular conveying belt, and the bottle placing seats are rotatably connected with the annular conveying belt; sampling bottles are placed in the multiple sets of bottle placing bases, taking and placing holes matched with the sampling bottles are formed in the upper portion of the heat preservation cavity, and sealing plates hinged to the inner walls of the taking and placing holes are installed in the taking and placing holes. The device has the beneficial effects that a second gear at the power output end of a motor is matched with a first gear to drive a bottle placement seat to rotate so as to drive a sampling bottle to rotate, so that sampled blood in the sampling bottle is fully mixed with an anticoagulant, and meanwhile, the sampling bottle is in a heat preservation environment in a heat preservation cavity in the whole process of rotation; blood in the sampling bottle is prevented from going bad when being cooled to influence a subsequent detection result.

The invention relates to the technical field of biological medicine industry, and provides a multi-stage vacuum heat-insulation high-temperature experimental facility which comprises a body, the body comprises an external box body and an inner container fixed in the box body, a flow guide cover is fixedly installed in the inner container, a detachable material plate is installed in the flow guide cover in a clamped mode, and the material plate is connected with the box body. Steps which are diagonally arranged are formed at the upper end and the lower end of the inner container, an air channel is formed between the inner container and the flow guide cover, an air cavity is formed between the inner side of each step and the flow guide cover, and a movable push plate is arranged in each air cavity; it can be understood that the flow guide cover is arranged in the inner container, the air channel and the air cavity are formed between the flow guide cover and the inner container, airflow circulation is driven by means of movement of the push plate in the air cavity, and materials are evenly heated on the material plate; meanwhile, the material plate is clamped in the flow guide cover through the elastic piece and can be easily installed and taken out through operation of a hand lever, direct contact with the hand is avoided, and using convenience and safety are improved.

The invention relates to the technical field of semiconductor testing, in particular to a high-temperature test oven for testing a semiconductor photovoltaic diode, which comprises a test station, an indexing driving assembly, a transfer assembly and a thermal test assembly, a vibrating disk feeder, a visual inspection mechanism, a thermal test assembly and a blanking box are sequentially arranged on the surface of the test station in the rotating direction of the indexing driving assembly, and a test system is arranged in the test station. The thermal test assembly is provided with a plurality of heating areas, each area is provided with a thermocouple heater, the heating power of each area can be independently controlled, and gradual temperature rise of the semiconductor element is achieved. Non-contact heating is carried out through the heat radiation sliding groove, heat radiation is conducted to the surface of the semiconductor element through the high-temperature-resistant material, the element is evenly heated in the testing process, element damage or testing errors caused by direct contact are effectively avoided, and the uniformity and safety of the heating process are ensured.

The inductance testing device comprises a bottom plate, a temperature testing box is fixedly connected to the top of the bottom plate, a temperature control device is fixedly connected to the front face of the temperature testing box, and a heat dissipation device is fixedly connected to the side, away from the temperature control device, of the temperature testing box; a first testing instrument is fixedly connected to the inner wall of the left side of an inner cavity of the temperature testing box, a humidity testing box is fixedly connected to the position, symmetrical to the storage box, of the temperature testing box at the top of the bottom plate, and a humidity control device is fixedly connected to the side, away from the temperature testing box, of the humidity testing box; and a mobile transportation device is rotatably connected between the outer wall of the right side of the temperature test box and the outer wall of the left side of the humidity test box. The invention provides an inductance testing device for an inductance component. The inductance testing device solves the problem that an existing inductance testing device for the inductance component cannot conduct testing under different temperature conditions.

The invention relates to an environmental test box for realizing high and low temperature rapid alternating circulation, which is mainly applied to the technical field of environmental test equipment. The test box is provided with a high-temperature chamber and a low-temperature chamber which are independent from each other, a thermal insulation layer is arranged between the two chambers, and the test box can respectively keep constant temperature environments at the highest temperature of + 75 DEG C and the lowest temperature of-50 DEG C; during a test, a sample is placed in the test bed, and the rotating shaft structure driven by the motor periodically rotates in a reciprocating manner or rotates in the same direction among different temperature zones, so that high-low temperature rapid alternating circulation is realized. The operation mode of the motor is controlled through the control system so as to simulate the accelerated aging process of the component in the temperature rapid alternating environment. According to the test box, through the design of the control system, the forced convection fan and the middle thermal insulation layer, it is guaranteed that the temperature switching process is rapid, uniform and stable. Compared with the prior art, high and low temperature circulation can be completed without overall heating and cooling of the interior of the test box, and the test box has the advantages of being high in test efficiency, capable of remarkably improving the reliability and accuracy of the high and low temperature alternating circulation test of the sample and the like.

The invention relates to a space microscopic sample support, a space experiment device and a fluid physics experiment cupboard, the space microscopic sample support comprises a support body and a heating sheet, one side surface of the support body is provided with the heating sheet, the other side surface of the support body is recessed to form a sample slot, and the heating sheet is arranged in the sample slot. And an observation light path penetrating through the bottom of the sample slot is arranged on the bracket body. According to the space microscopic sample support, a microscopic sample is taken out by an astronaut and placed on the sample support during observation, the sample support can maintain the liquid state of the microscopic sample during observation, and temperature uniformity is ensured.

A sustainable system for removing and concentrating per- and polyfluoroalkyl substances (PFAS) from water. The system includes an anion exchange vessel having a selected anion exchange resin therein configured to remove PFAS from the water. A line coupled to the vessel introduces a flow of water contaminated with PFAS such that the PFAS bind to the selected anion exchange resin and are thereby removed from the water. A regenerant solution line is coupled to the anion exchange vessel to introduce an optimized regenerant solution to the anion exchange vessel to remove the PFAS from the anion exchange resin, thereby regenerating the anion exchange resin and generating a spent regenerant solution comprised of the removed PFAS and the optimized regenerant solution. A separation and recovery subsystem recovers the optimized regenerant solution for reuse and separates and concentrates the removed PFAS.

The invention relates to a space experiment sample temperature processing device and a space fluid physics experiment cabinet, and the space experiment sample temperature processing device comprises a housing, an alternating temperature on-orbit sample drawer, a constant temperature on-orbit sample drawer, an alternating temperature descending sample drawer and a constant temperature descending sample drawer. An alternating temperature on-orbit sample cavity, a constant temperature on-orbit sample cavity, an alternating temperature descending sample cavity and a constant temperature descending sample cavity are arranged in the shell, an alternating temperature on-orbit sample drawer is arranged in the alternating temperature on-orbit sample cavity, and a constant temperature on-orbit sample drawer is arranged in the constant temperature on-orbit sample cavity; the alternating temperature descending sample drawer is arranged in the alternating temperature descending sample cavity, and the constant temperature descending sample drawer is arranged in the constant temperature descending sample cavity; the shell is provided with a temperature regulating mechanism for regulating and controlling the temperature of the alternating temperature on-orbit sample drawer, the constant temperature on-orbit sample drawer, the alternating temperature descending sample drawer and the constant temperature descending sample drawer.

The utility model relates to the technical field of new energy vehicle test devices, and discloses a whole vehicle walk-in type high and low temperature test box which comprises a box body, a test bin is arranged in the box body, and the box body is further provided with a temperature test device and a charging device. The temperature test device is used for providing high-temperature or low-temperature airflow for the test bin, and the charging device is used for charging a test vehicle; a left door plate and a right door plate are hinged to the front end of the box body, and the left door plate and the right door plate are matched with each other to seal the test bin; a third door plate is nested in the middle of the left side door plate or the right side door plate; the new energy automobile charging efficiency detection system has the following advantages: 1, the whole automobile can be detected, and the detection precision of the new energy automobile charging efficiency is improved; 2, the test box door body is of a structure that a large door is nested with a small door, so that personnel can conveniently enter and exit the test box; and 3, the top of the test box is provided with an anti-explosion pressure relief assembly, a spraying assembly and the like, so that the safety of the test box is improved.

The utility model belongs to the technical field of leakage detection, and particularly relates to a biological safety cabinet liquid collecting tank leakage detection device which comprises a safety cabinet bottom plate, the safety cabinet bottom plate is provided with a liquid collecting bin and a telescopic plate, the liquid collecting bin is provided with a liquid drainage hole, a sealing ring, a sensor and a mounting seat, and the bottom of the liquid collecting bin is provided with a groove. A control system is arranged on the side edge of the sensor, a movable plate, a leakage-proof sleeve and a piston are movably arranged below the liquid drainage hole, a motor is arranged below the control system, a lead screw is arranged at the output end of the motor, a limiting plate is arranged at the tail end of the lead screw, and a fixing button is arranged on the telescopic plate. According to the utility model, another interface is added on the original control system for transmitting electric signals, so that the control system can transmit signals to the alarm system and the motor at the same time, and the motor can start the driving screw rod to rotate to drive the moving plate and the leakage-proof sleeve to ascend, so that the leakage-proof sleeve and the piston block the liquid discharge hole; and the situation that liquid drops before workers take measures manually is avoided.

The invention relates to the technical field of wastewater detection, and discloses a water conservancy construction-based wastewater discharge detection device, which comprises a sampling box, a lifting handle frame rotationally arranged on the sampling box, a lifting ring arranged on the lifting handle frame, and a sampling unit arranged in the sampling box, the sampling unit comprises a collecting part arranged on the inner side wall of the sampling box and a collecting part arranged at the bottom of the inner side of the sampling box. According to the water conservancy construction-based wastewater discharge detection device, wastewater is pumped into a collection cylinder through a collection pipe, when a piston moves to the top of the collection cylinder, a driving motor is controlled to rotate reversely to extrude the wastewater in the collection cylinder, and the position of a sampling box in the wastewater can be changed by controlling the length of a rope; according to the wastewater sampling device, wastewater in different layers can be sampled, repeated sampling of wastewater is avoided, the wastewater can accurately reach a specified sampling position, and the water quality condition of a water area can be truly reflected.

The utility model relates to the technical field of temperature change test chambers, and discloses a rapid temperature change test chamber for hot and cold shock tests, comprising a chamber, a bottom plate fixedly installed inside the chamber, a partition plate fixedly installed on the upper surface of the bottom plate, an inner cavity of the chamber on the upper side of the bottom plate divided into a heating chamber and a cooling chamber by the partition plate, a receiving seat rotatably connected to the surface of the bottom plate, a servo motor fixedly installed on the inner bottom wall of the chamber, and a driving rod fixedly installed on the output shaft surface of the servo motor. In the utility model, when taking and placing materials, the adjustment ring is slid to the topmost side of the limit groove, and the placement cylinder is in a state facing the outside of the placement chamber, so that it is convenient for the operator to take and place the materials, and when conducting the test, the adjustment ring is slid to the bottommost side of the limit groove, and the placement cylinder is in a state tilted toward the inside of the placement chamber, so that the material can be prevented from being thrown out of the placement cylinder under the action of rotating centrifugation, and the test is carried out smoothly.

The invention discloses an off-axis visual quantitative observation experiment storage tank in the technical field of space on-orbit fluid management, which comprises an upper half storage tank and a lower half storage tank which are fixedly connected, and a sealing ring is arranged between the upper half storage tank and the lower half storage tank; box bodies of the upper half storage box and the lower half storage box are made of transparent materials, so that the gas-liquid interface morphology in the box bodies can be observed outside the box bodies; the volume of the upper half storage tank is larger than that of the lower half storage tank, so that the center of the experimental storage tank is positioned in the upper half storage tank, and the gas-liquid interface morphology at the maximum axial section of the center in the experimental storage tank can be observed from the upper part of the experimental storage tank; a liquid inlet and a liquid outlet of the experiment storage tank are formed in the lower half storage tank, so that observation sight is prevented from being blocked.