836results about "Enclosures/chambers" patented technology

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 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 utility model belongs to the technical field of test boxes, and particularly relates to a high-low temperature test box with uniform heating. Comprising test cavities which are arranged in a test box at intervals left and right; a placement net plate is embedded in the bottom of the test cavity; the fans are arranged below the placing net plate in a bilateral symmetry manner; the air inlet end of the fan is communicated with the test cavity through the placing screen plate, and the air outlet end of the fan is communicated with the air duct cavity; the air duct cavities are distributed on the left side wall and the right side wall of the test cavity in a bilateral symmetry manner; a spoiler is vertically and obliquely arranged in the air duct cavity, and an air distribution plate is arranged at the air return end of the air duct cavity. According to the utility model, through the arrangement of the spoiler and the air distribution plate in the air duct cavity, high and low temperature airflow with uniform airflow distribution can be provided for the interior of the test cavity, so that the temperature rise rates of different areas are consistent, and the uniform heating effect during product testing is further improved.

The utility model discloses a temperature-controllable asphalt concrete non-contact slope flow instrument device, which comprises a temperature control box and an angle adjusting device, the angle adjusting device comprises a bottom support, an adjusting plate and a base, the left end of the adjusting plate is rotatably connected with the bottom support, the base is arranged below the adjusting plate, a sample table is arranged on the upper surface of the base, and the sample table is connected with the temperature control box. The sample table penetrates to the position above the surface of the adjusting plate, a sample is arranged on the sample table, an adjusting screw is arranged on the upper surface of the base and penetrates to the position above the adjusting plate, an adjusting nut is arranged on the adjusting screw, and a heat insulation glass box is arranged on one side of the upper surface of the adjusting plate. A rechargeable battery, an angle display and a laser displacement sensor are arranged in the heat insulation glass box; according to the structure, an independent heat insulation glass box is adopted, a laser hole and a heat insulation film are arranged, and the heat insulation film is used for reducing errors, caused by refraction, of a laser beam penetrating through the high-temperature-resistant heat insulation glass box on the sample placement position and deformation data of the sample.

The utility model discloses a comprehensive test box which comprises a foundation, a downwards-sunken foundation pit is arranged in the foundation, a concrete bearing base body is poured in the foundation pit, and a first buffer layer, a framework layer and a second buffer layer are arranged between the concrete bearing base body and the foundation pit. The first buffer layer, the framework layer and the second buffer layer are all of a cylindrical structure and wrap the circumferential direction and the bottom of the concrete bearing base body, and the framework layer is provided with a supporting part extending upwards in the vertical direction to form a foundation pit; the vibration table is fixedly mounted at the upper end of the concrete bearing base body through a metal base; the bottom of the test box body is provided with a butt joint window, and the butt joint window is fixedly connected to the supporting part in a sealed mode. The utility model has the beneficial effect of solving the technical problem that the connection sealing difficulty of the large-scale vibration table and the box body is large.

The utility model relates to a rain test box convenient to maintain, which comprises a test box and a test bench fixedly arranged at the bottom of the inner cavity of the test box, a spray head assembly is arranged in the test box, the spray head assembly comprises rotating shafts rotationally arranged at the left side and the right side of the inner cavity of the test box, and a semicircular pipe is fixedly arranged between the two rotating shafts. And a plurality of external thread connecting pipes penetrating into the semicircular pipe are fixedly mounted at the bottom of the semicircular pipe. According to the rain test box convenient to maintain, after a product is placed at the top of the test bed, a water pump sucks water through an extraction pipe, the water enters a filter box through a drainage pipe and is purified by a filter assembly, and the water flows into a semicircular pipe through a hard pipe and a folding pipe, is sprayed out from a nozzle of an external thread connecting pipe and is concentrated at the top of the test bed for a waterproof test; the driving unit drives the semicircular pipe to rotate, multi-directional spraying of the product is achieved, the nozzle blocking risk is reduced through the filtering assembly, and the nozzle can be easily rotated, detached and cleaned when blocked.

The invention discloses an optical thermostat with comprehensive vibration reduction and low-temperature in-situ displacement functions, which adopts upper and lower opposite vibration absorbers and a large-mass base to realize first-order to second-order inertial vibration absorption, and further realizes thorough decoupling with an optical platform in a suspension type non-contact manner, and the vibration transmissibility can be reduced to be less than 10%. Resonant frequencies of two systems (a sample table system and a cold head system) are designed to achieve vibration decoupling. The technical problems that in the prior art, the high-grade vibration isolation capacity is insufficient, refrigerator noise is easily coupled to a measuring light path, the low-temperature in-situ precision displacement capacity is lacked, and the contradiction between heat isolation, convenience and cost is difficult to balance can be solved. Under the support of a conventional GM refrigerator, the comprehensive requirements of ultralow basic vibration, strong decoupling of a measurement light path, low-temperature in-situ micron-sized displacement, convenient sample replacement and efficient refrigeration / thermal control are met at the same time.

The invention relates to the technical field of corrosion tests, in particular to environment simulation equipment based on an internal corrosion test, which comprises a test box, a collection box and a water bath box, the test box is fixedly mounted at the top of the water bath box through four supporting blocks, and the four supporting blocks are respectively positioned at four corners between the test box and the water bath box; the medium box enables the spraying assembly to accurately spray a test medium in the box to the surface of a test sample borne by the bearing assembly through the water inlet pipe and the spraying assembly, a corrosion test simulation environment is constructed, the flow sensor collects medium flow signals in real time, and the control module adjusts the rotating speed of the water pump and the opening degree of the electromagnetic valve according to signal feedback. Precise detection and dynamic adjustment of the spraying flow are achieved, the consistency of spraying working conditions of multiple groups of test samples is guaranteed, meanwhile, the water bath box conducts temperature pretreatment on media in the medium box in a water bath heating mode, the water bath box and a thermometer complete cooperative regulation and control of the temperature, precise control of the test temperature is achieved, and the corrosion simulation requirements of different service environments are met.

The utility model discloses a high and low temperature test box, which relates to the technical field of test boxes and comprises a test box, a box cover is arranged on one side of the test box, a movable plate is arranged on the inner side of the test box, and a motor rotating component is arranged at the bottom of the test box. A movable buckle is arranged at the top of the box cover; two pull rods are symmetrically arranged at two ends of one side, close to the test box, of the box cover; a rotating disc part is arranged on the upper surface of the movable plate; the rotating disc part comprises a placement disc; the bottom of the placement disc penetrates through the movable plate to be fixedly connected with a triangular clamping pin. And the vertical projection of the triangular bayonet lock is an isosceles triangle. By means of the structure, parts of different sizes and materials can be driven to rotate, better heating is facilitated, inaccurate test results caused by uneven heating are avoided, the movable plate can be pulled out, then the rotating disc part is pulled out, the parts can be taken out conveniently, and the test efficiency is improved.

The utility model discloses a combined high and low temperature test box, which relates to the technical field of high and low temperature test boxes and comprises a box body and an electromagnet. A box door is hinged to the front side face of the box body, air inlet pipes are installed at the front end and the rear end of the left side face of the box body, exhaust grooves are evenly formed in the rear side face of the box body, two machine bases corresponding to each other left and right are arranged at the bottom end of the rear side face of the box body, the machine bases correspond to the exhaust grooves in position, and fans are placed in the machine bases. A sealing ring adheres to the front side face of the box body, the number of the electromagnets is two, the electromagnets are installed on the right side face of the interior of the box body, and a combination unit is arranged in the box body. According to the combined type high and low temperature test box, to-be-detected pieces of different specifications can be placed by adopting the placement plate which can be adjustably mounted, and meanwhile, the to-be-detected pieces can be dynamically tested by virtue of the rotatable rotating disc, so that the to-be-detected pieces can be combined and mounted according to different to-be-detected pieces, and the practicability of the test box is further improved.

The utility model discloses an integrated collection device for waste oil in a laboratory, and belongs to the technical field of waste oil collection and treatment. The turning cover is rotationally connected to the funnel; the mesh screen is detachably connected in the funnel; the diversion pipe is in threaded connection with the bottom of the funnel; the connecting plate is in threaded connection with the connecting ring; the breather pipe is fixedly connected to the connecting ring; according to the utility model, the funnel is fixedly arranged on the waste oil collecting barrel through the device, so that the funnel does not need to be taken down to seal the cover, on one hand, the problem that oil is easy to drip when the funnel is taken out is solved, and on the other hand, the problem that a barrel cover is difficult to open by a single hand when a worker pours round-bottom glass instruments such as a distillation flask and a test tube in the prior art is solved; meanwhile, through the turning cover arranged on the funnel, the problem that in the prior art, waste oil remaining on the funnel is prone to volatilizing and polluting the environment is solved.

The invention belongs to the technical field of microfluidic detection, and relates to microfluidic analysis equipment which comprises a lower shell, an outer shell, an inner lower shell, an inner upper shell, a kit mounting seat, a driving device, a magnet moving structure, a pressing structure and other core components. A kit mounting seat in the inner lower shell can be driven by a driving device to slide, a magnet moving structure drives a magnet to move along a magnet slideway of the kit to promote a micro-flow reaction, and a pressing structure presses a pressing part of the kit to assist the reaction; meanwhile, structures such as slide rail and slide block matching, motor lead screw transmission, two-dimensional code scanning, light path adjustment and temperature control are integrated, so that accurate positioning, intelligent adaptation and stable reaction environment of the kit are realized, and the detection accuracy is improved. The problems that an existing device is single in driving mode and insufficient in detection precision are solved, and the device is compact in structure, high in universality and capable of being widely applied to the fields of medical diagnosis, environment monitoring and the like.

The invention discloses an intelligent glassware storage cabinet with recognition, classification and detection functions, and relates to the technical field of experimental facilities, the intelligent glassware storage cabinet comprises a glassware storage unit, a recognition and detection unit, an object taking and conveying unit and a control unit, and the glassware storage unit is installed in a storage cabinet body. The profiling groove of the memory sponge lining of the glass instrument storage unit is matched with instruments of the same type and multiple specifications, the pressing assembly achieves dynamic pressing through the micromotor and the pressure sensor, and the complexity of manually replacing a mold is avoided. The recognition and detection unit fuses a visual camera and a four-way ultrasonic detection module, accurate judgment of instrument types is achieved through visual recognition, an ultrasonic probe scans the interior of the instrument from the front, back, left and right faces, and hidden damage such as microcracks can be detected. The object taking conveying unit conveying belt achieves efficient linkage of a storage area and an object taking area, the object taking time of a single instrument is greatly shortened, the concentrated object taking efficiency of instruments of multiple specifications is improved, and the wrong taking rate is reduced.

The invention discloses a high-specific-energy lithium battery test platform and an evaluation method, and relates to the technical field of lithium battery tests.The test platform has the function of testing environmental reliability, electrical performance and safety and can apply multi-combination stress to a high-specific-energy battery under the environmental simulation working condition. And the change trend can be calculated, fitted and analyzed for test data, and the failure mode of the battery is warned in advance, so that the reliability verification target of a battery designer is met. According to the application, multi-combination stress can be applied to the high-specific-energy battery under the environment simulation working condition, the test data can be calculated to evaluate the SOH, the failure mode of the battery is early warned and identified in advance, and the reliability capability verification target of the battery is met.

The utility model discloses an explosion-proof high and low temperature test chamber, which comprises a fresh air fan, a stirring fan and a strong exhaust fan, and further comprises a temperature control module used for controlling the temperature in the chamber of the test chamber; the humidity control module is used for controlling the humidity in the cabin; and the sampling module is used for sampling and detecting gas in the cabin. The oil temperature heat exchange mode is adopted, and a heat source is arranged outside the anti-explosion area, so that the temperature can be accurately controlled, the anti-explosion effect can be ensured, and the application of an anti-explosion scene is realized; by adopting a sampling mode of condensing and then analyzing, not only is the real-time monitoring of the state of the gas in the cabin in a high-temperature state realized, but also the safety is greatly improved.

The invention relates to the field of constant-temperature simulation boxes, in particular to a constant-temperature simulation box with circulating airflow, which comprises an outer box body and an inner box body, the inner box body is arranged in the outer box body, a mounting box and a speed regulation part are arranged in the inner box body, a fan is arranged in the mounting box, and the mounting box and the speed regulation part are connected through a communicating pipe. Wind power is provided for the speed regulating part through the mounting box; the speed adjusting piece comprises a fixing plate and a nozzle, and a plurality of ventilation holes are formed in the fixing plate. By designing a multi-stage adjustable speed regulation part structure and cooperating with the first adjusting head and the second adjusting head which are driven by the electric telescopic rod, automatic grading regulation and control of the airflow velocity are achieved, the air outlet hole diameter can be flexibly switched according to the characteristics of a test sample, high-speed direct blowing airflow can be provided for impact-resistant and non-thermosensitive samples, the heat exchange efficiency is improved, and the heat exchange efficiency is improved. The impact damage to fragile and thermosensitive samples caused by high-speed airflow can be avoided, and the test adaptation capability of equipment to samples with different characteristics is improved.

The invention relates to a rate gyroscope temperature modeling test device and a test method, and relates to the technical field of rate gyroscope test.The device comprises a high-low temperature test box, a rotary table module and a measurement and control module, the high-low temperature test box provides a-50 DEG C to 200 DEG C wide temperature environment, the rotary table module exerts an accurate rotating speed, and the measurement and control module is connected with the high-low temperature test box; the measurement and control module realizes automatic temperature control, rotating speed control and multi-parameter synchronous acquisition. A hollow rotating shaft and a titanium alloy heat insulation coupling are adopted to isolate heat conduction, and a 24-bit AD acquisition card is combined to obtain an output signal of the gyroscope. The method comprises the steps of multi-temperature-point heat preservation, positive and negative rotating speed testing and data acquisition, construction of a temperature-angular speed-output three-dimensional model, and fitting of a nonlinear compensation formula through a least square method. According to the invention, automatic high-precision testing in a wide temperature range is realized, the scale factor precision and the zero-bias stability of the gyroscope in a high-temperature environment are remarkably improved, and the method is suitable for high-temperature application scenes such as geological exploration and petroleum drilling.

The utility model provides a polar plate lead plaster adhesive strength testing device which comprises a main body frame, a polar plate releasing device is arranged at the upper end of the main body frame and comprises a mounting bottom plate, and an air cylinder connecting plate is fixedly connected to the middle of the upper end of the mounting bottom plate. The side wall of the air cylinder connecting plate is fixedly connected with a pneumatic finger, two clamping jaws of the pneumatic finger are fixedly connected with reset buckle mounting blocks, reset buckles and pin shafts are arranged on the reset buckle mounting blocks, and rotating shafts are rotationally arranged on the two sides of the lower portion of the mounting bottom plate. The side wall of the rotating shaft is fixedly connected with a bearing plate and a rotating shaft limiting block, one end of the rotating shaft limiting block is in lap joint with the edge of the reset buckle, and a tension spring is arranged in the middle of the rotating shaft limiting block. The device is suitable for testing polar plates with different sizes and weights.

The invention discloses an intelligent sampling workstation for a laboratory, which comprises a workbench, the top end of the workbench is fixedly connected with a shell, the front end of the inner top wall of the shell is fixedly connected with a shell, the shell is internally provided with an adjusting part, the adjusting part comprises a motor and two fixing rings II, the motor is fixedly connected in the shell, and the fixing rings II are fixedly connected in the shell. A limiting part is installed at the rear end of the shell, an auxiliary part is installed in the shell, a fixing cavity is formed in the top end of the workbench, a heating plate is arranged in the fixing cavity, water tanks are fixedly connected to the two sides of the top end of the workbench, and water pipes are arranged at the rear ends of the two sides of the top end of the workbench. The ultraviolet illuminating lamp is driven by the adjusting part fixed on the inner top wall of the shell to incline towards the left side, the front side, the right side and the rear side in sequence, so that the angle of the ultraviolet illuminating lamp is adjusted by 360 degrees, and the ultraviolet illuminating lamp can comprehensively irradiate and disinfect the surface of the workbench.

The utility model relates to the technical field of deadwood and fallen leaf sampling, and discloses a sampling device for collecting forest deadwood and fallen leaf samples, which comprises a collecting cylinder and a placing filter plate, a filter component is arranged on the collecting cylinder, and a covering mechanism is arranged on the filter component; the filtering assembly comprises a lifting assembly and a mounting assembly, the lifting assembly comprises a long groove, a gear is fixedly connected to the surface of a rotating shaft, fixing plates are rotatably connected to the top of the rotating shaft, hinge plates are hinged to the inner sides of the left and right fixing plates, and the tops of the hinge plates are hinged to the inner sides of the connecting seats. According to the sampling device for collecting the forest dry branch and fallen leaf samples, a connecting base is lifted in a long groove, meanwhile, under the cooperation of a spring, small particles or crushed leaves mixed in dry branches and fallen leaves placed on a filter plate can be screened, the dry branches and fallen leaves can be conveniently sampled in the later period, an insertion plate is inserted into an insertion groove, and the insertion plate is inserted into the insertion groove; the mounting base and the fixing ring are fixed through the bolt in a threaded mode, and the fixing ring can be fixedly arranged at the top of the collecting barrel.

A manipulation device for a biological particle includes a substrate, a metal conductive layer, a working electrode, and a dielectric layer. The metal conductive layer is over the substrate. The working electrode is over and electrically in contact with the metal conductive layer. The dielectric layer covers the metal conductive layer. The dielectric layer has a first recess exposing the working electrode. A top surface of the working electrode is higher than a bottom of the first recess, and the dielectric layer is in contact with a sidewall of the working electrode.

The present application relates to the technical field of chemical experiment, and specifically relates to a chemical experiment table with chemical solution treatment function, which comprises a chemical experiment table composed of a table body, a water tank and a storage rack, a controller is arranged on the table body, the controller is signal connected with a touch display screen, neutralization cavities are symmetrically arranged in the middle of the table body, a PH sensor is arranged in each neutralization cavity, a fixing block is fixedly connected to the side wall of each neutralization cavity, vibration grooves are formed in the two sides of the inner wall of the table body, a neutralization pipe is slidably arranged in the middle of each neutralization cavity, a plurality of through holes are formed in the neutralization pipe, a waste liquid pipe is connected to the top of each neutralization cavity, a three-way pipe is connected to the bottom of each neutralization cavity, a collecting assembly and a sewage assembly are arranged at the other two ends of the three-way pipe respectively, and an auxiliary assembly is arranged in the vibration groove. The structure for preliminary neutralization treatment of chemical solution arranged below the chemical experiment table can avoid the leakage risk and high subsequent treatment cost caused by the temporary storage of the traditional experiment table relying on the collecting barrel.

A system for the simultaneous thermal analysis of a plurality of single samples of, in particular biological, material by means of differential scanning calorimetry, with at least one sample carrier having several sample vessels, wherein a single sensor for measuring an amount of heat emitted or absorbed by the single sample during the thermal analysis is assigned to each sample vessel; a heating and / or cooling unit for the simultaneous temperature application of the single samples included in the sample vessels, with a receptacle for the at least one sample carrier; a measuring instrument, which is connected to the single sensors and which is formed to simultaneously capture a measuring value for the emitted or absorbed amount of heat of the single samples during the thermal analysis, a sample carrier, in particular for use in this system as well as a method for the simultaneous analysis of a plurality of single samples or groups of single samples by means of differential scanning calorimetry.

The invention discloses a sampling assembly, sampling equipment and a sampling reaction device. According to the present invention, the sampling assembly comprises: a sampling plate, the top of which is provided with an accommodating groove, and the accommodating groove is used for placing a sample collection container; a bulge is arranged at the top of the sampling plate outside the accommodating groove, and is positioned in the middle area in the length direction of the sampling plate; a groove for accommodating the sampling plate is formed in the top of the placing plate; when the sampling plate is placed in the placing plate, at least part of the protrusion is located outside the placing plate. And the sample plate can be conveniently, stably and rapidly grabbed, and the grabbing process is more stable.

In the using process, an operator lifts up the placing cylinder and slowly places the placing cylinder containing a vessel into the acid cylinder, when the fixed handle abuts against the upper edge of the acid cylinder, the stretching cylinder just enters acid liquor, and the acid liquor flows into the placing cavity through the through hole and makes full contact with the vessel, so that the acid value of the vessel can be observed. And after the treatment is finished, an operator can lift out the whole placing cylinder, so that the placing cylinder is prevented from being in direct contact with acid liquor. The hand of an experimenter does not need to stretch into the acid cylinder, acid liquid is prevented from making direct contact with gloves, the burning risk caused by corrosion and damage of the gloves is reduced, the fixed handle is in limiting fit with the upper edge of the acid cylinder, the placing cylinder can be prevented from sliding down or completely sinking into the acid liquid, and the controllability and safety of operation are improved. The placing cylinder realizes sufficient circulation of acid liquor through the through hole, so that the acid liquor can enter the placing cavity from multiple directions to form all-directional soaking with the vessel, and the uniformity and effectiveness of cleaning treatment are improved.

This invention provides a constant temperature and pressure control method and a high and low temperature low pressure test chamber. Through high-precision sensor array multi-source data acquisition, signal filtering and feature extraction, combined with improved Granger causality test and coupling spectrum construction, the main propagation path and propagation characteristics of various disturbances are identified. By using sliding window online optimization and dynamic weight matrix, the disturbance suppression mechanism is embedded in the PID loop to achieve multi-channel weighted compensation of proportional, integral and derivative components. This invention can accurately identify and compensate for external disturbances of different paths, time sequences and frequency bands in real time, improve the control accuracy and anti-interference ability of the system, and ensure the stability and robustness of the test chamber operation.

The utility model discloses a waste liquid collecting structure of a clean bench, which effectively facilitates the dumping of waste liquid during the operation of the bench, and comprises a bench body, the front side of the bench body is fixedly connected with an operation bench, the left and right side walls of the bench body are fixedly connected with a connecting block, and the left and right side walls of the bench body are fixedly connected with the connecting block. A first liquid discharging channel is formed in each connecting block, a liftable baffle is arranged in each first liquid discharging channel, and a collecting barrel is detachably connected to the lower side of each first liquid discharging channel; the rear side of the first liquid discharging channel is communicated with a negative pressure channel used for providing negative pressure for the interior of the first liquid discharging channel. The liquid discharging device is novel in structure, ingenious in conception and easy and convenient to operate, effectively facilitates operation of workers, enables opening and closing of the blocking plate to be smoother, achieves a better sealing effect, reduces the risk of biological pollution, and is suitable for popularization and application. And the diffusion probability of the polluted aerosol is reduced.

The utility model discloses a rotary heating type air circulation test box which comprises an outer box body and an inner box body, the inner box body is located in the outer box body and connected with the outer box body, a box door is arranged on one side of the outer box body, and the inner box body and the box door form a test cavity; a rotatable turntable is arranged in the test cavity, a plurality of supports for placing to-be-tested products are arranged on the turntable, and the supports are uniformly distributed along the edge of the turntable. According to the rotary heating type air circulation test box designed by the utility model, a plurality of to-be-tested products can be placed on the supports, the phenomenon of stacking is avoided, the products are driven to rotate in the test cavity through the rotation of the turntable, and the plurality of supports can drive the plurality of products to synchronously test, so that the test efficiency is high; the rotary heating mode enables the product to be heated uniformly, and the test result is accurate.

The invention discloses an epidemic disease detection super-purification workbench for animal husbandry and veterinary medicine, and relates to the technical field of super-purification workbench cleaning. The animal husbandry veterinary epidemic disease detection super-purification workbench comprises a workbench body and a workbench top located in the workbench body, and further comprises an advancing device and a cleaning device, and the advancing device is used for driving the cleaning device to move in a reciprocating mode to clean the workbench top. The pressure of the scraping strip can be dynamically adjusted, the scraping rate of dry blood stains can be increased, the liquid spraying amount and the mixed concentration of a protease solution and clear water are automatically adjusted according to the cleaning level, the device adapts to stains of different degrees, the binding force of the stains and a table top is greatly weakened, assistance is provided for subsequent scraping of the scraping strip, and the working efficiency is improved. The cleaning effect of the working table top is effectively improved, the cleaning efficiency is improved, resource waste is avoided, and the use cost is reduced.

The utility model discloses a biosafety cabinet with a dust cover, which comprises positioning support blocks fixedly connected to the left side and the right side of the biosafety cabinet, the surfaces of the two positioning support blocks are rotatably connected with positioning connecting pieces, and the dust cover is fixedly connected between the two positioning connecting pieces. The left side of the dust cover is fixedly connected with a thickened connecting block, the rear side of the thickened connecting block is welded with a round head plate, the left side of the biological safety cabinet is fixedly connected with a perforated L-shaped plate through a bolt, and an inner cavity of the perforated L-shaped plate is slidably connected with a round rod. The dust cover pushes the round rod to slide backwards, then the resilience force of the spring pushes the round rod and the inclined surface block to reset, and then the positions of the round head plate and the dust cover are fixed, so that the purpose that the operation window is subjected to dust prevention treatment before and after use, and the interior of the biological safety cabinet can be better kept in a clean state can be achieved.