66 results about "Evaporating dish" patented technology

The invention belongs to the technical field of sea water desalination equipment, and particularly relates to a solar heat collection type sea water desalination device, which is characterized in that an annular heating belt is arranged and matched with a circulating pipe, so that the heating belt can be heated by a circulating motion mode in a solar heat collection evaporation operation process; the heating belt is in alternate contact between the evaporation dish and external seawater, on one hand, the heating belt can transport impurities, silt and the like in the evaporation dish to the outside of the evaporation dish to a certain extent in the circulating motion process, cleaning of the evaporation dish is achieved, and light obstruction caused by the impurities is reduced; the heating belt can be in contact with seawater with different concentrations, so that salt components are transferred to external seawater from the evaporation pan, and the effect that the crystallized salt layer is separated from the heating belt is further accelerated by utilizing the temperature difference between the evaporation pan and the external seawater to cause the heating belt to expand with heat and contract with cold to a certain extent and deformation generated when the circulating roller drives the heating belt to move.

The utility model discloses an automatic water sample concentrating and ashing device which comprises a microwave evaporator and a muffle furnace, the top of the microwave evaporator is fixedly connected with a motor, the tail end of an output shaft of the motor is fixedly connected with a spraying barrel, the microwave evaporator is fixedly connected with an infrared thermometer, an evaporating pan is installed in the microwave evaporator, and the evaporating pan is fixedly connected with the spraying barrel. The bottom of the evaporation dish is fixedly connected with a towed weighing balance, the towed weighing balance is arranged on the microwave evaporator, one side of the microwave evaporator is provided with a water and acid adding mechanism, one side of the microwave evaporator is provided with a water adding mechanism, and the evaporation dish is provided with a conveying mechanism connected with the evaporation dish. The equipment disclosed by the utility model is small in occupied area and high in evaporation and concentration speed, and evaporation, concentration and ashing can be integrated.

The invention discloses an automatic small evaporator, which belongs to the technical field of evaporation measurement and comprises an evaporation dish, an evaporation weighing device, an overflow cylinder, an overflow weighing device, a protection box, an evaporator bracket, a control unit, a rainwater collecting cylinder, a rainwater collecting weighing device and a rainwater collecting cylinder bracket. Weighing measurement and data processing are completed through automatic control of the control unit, the rain collecting cylinder and the rain collecting weighing device are designed, the function of measuring precipitation and evaporation in the same place is integrated, and evaporation calculation errors caused by uneven precipitation distribution are avoided; by installing the grid mesh, errors of water drinking and water splashing of birds are avoided under the condition that water surface ventilation and natural illumination are not affected; by designing a double-layer device wall evaporation dish, filling a heat insulation material in an interlayer and spraying ceramic microbead heat insulation coatings on the inner and outer device walls, the influence of solar radiation temperature increase on the evaporation measurement precision is effectively avoided. According to the invention, automatic measurement of the small evaporator is realized, and the measurement precision is greatly improved.

The utility model discloses a vehicle-mounted refrigerator and a vehicle and relates to the technical field of vehicle-mounted equipment, the vehicle-mounted refrigerator comprises a box body, a refrigerating system and an evaporating dish, the box body is provided with a storage cavity, the refrigerating system is arranged in the box body and used for adjusting the temperature of the storage cavity, and the refrigerating system comprises an evaporator assembly; the evaporating dish is arranged on the box body, located below the evaporator assembly and used for collecting and evaporating defrosting water generated when the evaporator assembly defrosts, and a plurality of concave parts are formed in the bottom wall of the evaporating dish. According to the technical scheme, the volume and the defrosting evaporation area of the evaporation dish are increased, so that the problem that water accumulated in the evaporation dish is too much can be relieved, and the situation that when a vehicle bumps or the inclination degree is large, the water easily overflows to the storage space of the refrigerator, and the storage space is not occupied can be relieved. And articles stored in the storage space are damaged.

The utility model relates to the technical field of household appliances, in particular to a refrigerator. The door body is movably connected to the refrigerator body and is constructed to open and close the refrigeration chamber; the evaporation dish assembly is arranged at the bottom of the box body, the evaporation dish assembly comprises an evaporation dish used for collecting defrosting water, the evaporation dish is provided with an inserting groove located in the outer side of the bottom of the evaporation dish, and the inserting groove extends in the length direction of the evaporation dish or the width direction of the evaporation dish; and at least part of the evaporating pipe is inserted into the inserting groove in the extending direction of the inserting groove, so that at least part of the evaporating pipe is attached to the bottom of the evaporating dish. The service life of the evaporation pipe is prolonged, the bottleneck problem that the size of the evaporation pipe is not accurate is solved, and the installation stability of the evaporation pipe can be improved.

The utility model relates to the technical field of refrigeration equipment, and discloses a drainage assembly for a refrigerator, which comprises an external drainage pipe and an evaporating dish, wherein the external drain pipe comprises a pipe body and a first connecting part arranged on the pipe body, the evaporating dish comprises a first matching part, and the first connecting part is connected with the first matching part, so that the external drain pipe is integrated on the evaporating dish. The first matching part is matched with the first connecting part, so that the external drain pipe is integrally arranged on the evaporating dish and is mounted on the box body together with the bottom cooling assembly, the external drain pipe does not need to be mounted after a compressor pipe is welded in the later period, the requirement on an operation space is reduced, and the influence of small compressor cabin space on the mounting of the external drain pipe is reduced; the assembly difficulty is reduced and the assembly speed is improved. The utility model further discloses the refrigerator.

The utility model discloses a refrigerator, which comprises an evaporating dish which is arranged close to a compressor, an evaporating pipeline is arranged in the evaporating dish in a snakelike manner, the evaporating pipeline comprises an inlet section, a middle section and an outlet section, the inlet section is connected with the compressor, the outlet section is positioned above the middle section, and the tail end of the outlet vertically extends to be connected with an external piping; each vibration reduction block is provided with a vibration reduction body, a receding part and a clamping part, the receding parts and the clamping parts penetrate through the vibration reduction bodies in the length direction, and the evaporation pipelines penetrate through the receding parts and are clamped in the clamping parts; a vibration reduction block is arranged on the section, closest to the bottom wall of the evaporation dish, of the evaporation pipeline of the inlet section, so that the section of evaporation pipeline is isolated from the side wall face and the bottom wall face of the evaporation dish; and the other damping block is arranged on the middle section, so that the middle section is isolated from the bottom wall surface of the evaporating dish when the lifting outlet section is assembled with an external piping. The evaporation pipeline can be prevented from being in contact with the wall surface of the evaporation dish.

The invention provides a traditional Chinese medicine extract detection method, and relates to the field of extract detection. Comprising the following steps: S1, precisely weighing M1 g of a test sample, and adding the test sample into a conical flask; s2, adding 100 mL of an ethanol solution into the conical flask, and sealing the conical flask opening; s3, preliminarily shaking up the solution system in the conical flask, then fixing the conical flask on an oscillator, setting the oscillation time to be 6 hours and the frequency to be 120 Hz, and then standing for 18 hours; s4, filtering the solution system in the conical flask, and precisely measuring 20mL of filtrate; s5, drying the evaporation dish to constant weight, weighing the weight of the evaporation dish, and recording the weight as M4; adding the filtrate weighed in the step S3 into a dry evaporation dish, drying to constant weight, and recording as M5; and S6, calculating the content of the extract in the test sample. According to the detection method, the cost of inspection personnel is effectively reduced, the inspection efficiency is improved, personnel errors can be effectively reduced, and the time utilization rate of inspection is improved.

The utility model discloses an organic solvent evaporation device for fluorescence determination of food trace elements, which comprises a hot plate instrument, and the upper plate surface of an electric hot plate of the hot plate instrument is a hot plate surface of a heating evaporation dish; an air injection stirring pipe located above the electric hot plate is arranged on the hot plate instrument through a driving mechanism, the air inlet end of the air injection stirring pipe is connected with a hot air source supply system, the air outlet end of the air injection stirring pipe is in butt joint with an air distributor, and the air injection stirring pipe is driven by the driving mechanism to have a lifting motion state and a rotating motion state. In-out and rotary stirring relative to the evaporating dish are realized. According to the utility model, the air injection stirring pipe is arranged on the hot plate instrument to pneumatically stir a sample in the evaporation dish, so that the evaporation efficiency of an organic solvent in the sample can be effectively improved.

The utility model provides a vacuum evaporation feeding device. The vacuum evaporation feeding device is provided with an evaporation cavity with three open cavities; the vacuum cavity is hermetically communicated with one of the three openings of the evaporation cavity and forms a cavity body with a vacuum environment inside; the material tank is connected with another opening of the three openings of the evaporation cavity in a sealing manner and is used for supplying a liquid raw material for coating stored in the material tank to the evaporation cavity through a pipeline; the vacuum electrode assembly is connected with the remaining opening of the three openings of the evaporation cavity and can seal the opening in a detachable mode; the heating sheet is arranged in the evaporation cavity and is electrically connected with the vacuum electrode assembly; and the evaporation dish assembly is configured in the evaporation cavity in a manner of accommodating the liquid raw material from the charging bucket, is configured above the heating sheet in a manner of being in surface contact with the heating sheet, and is electrically connected with the vacuum electrode assembly. According to the utility model, the coating material can enter a vacuum environment in a liquid form and is evaporated in the vacuum environment.

The invention discloses a method for determining salinity in coastal saline soil by adopting an ultrasonic extraction method. The method comprises the following steps: (1) determining optimal extraction parameters through experiments; (2) weighing the air-dried coastal salinized soil which is quantitatively sieved, putting the air-dried coastal salinized soil into a conical flask, and adding distilled water into the conical flask according to a water-soil mass ratio; (3) sealing the conical flask, and performing ultrasonic extraction treatment; (4) sucking 40 ml of the turbid liquid from the conical flask into a centrifugal tube, setting centrifugal parameters, and carrying out centrifugal treatment to prepare a clarified leaching solution; (5) accurately measuring an upper-layer clarified leaching solution from the centrifugal tube, evaporating the upper-layer clarified leaching solution to dryness in a ceramic evaporation dish, and continuously drying in a drying oven until the weight is constant; and (6) calculating the salt content in the coastal saline soil according to the mass of the dried residual solid. The method provided by the invention solves the problems of insufficient extraction and low separation efficiency of salt in the coastal salinized soil in a traditional method, and can rapidly and accurately measure the salt content in the coastal salinized soil.

The utility model discloses a pendimethalin precipitation device based on continuous desolvation, which relates to the technical field of chemical equipment, and adopts the technical scheme that a gear A is coaxially mounted on the mounting surface of a turntable, the gear A is meshed with a gear B, one end of a connecting rod is mounted on the gear B, and the other end of the connecting rod is meshed with the gear A; the tank bottom scraping device has the advantages that the tank bottom scraping assembly is arranged, so that the rotary scraping plate can rotate around the axis where the connecting rod is located while being driven by the rotary disc to revolve, the tank bottom can be scraped while stirring is achieved, the scraping effect is good, and the scraping effect is good. The rotating force is transmitted to the rotating scrapers through the gear B along the connecting rod and the clamping rod, and by switching the rotating scrapers with larger sizes, the device can be suitable for the evaporating dish with larger caliber, so that the caliber size of the evaporating dish is improved by the upper limit, the evaporating area is increased, and the desolventizing efficiency is improved.

The present invention relates to the technical field of flexible luminescent material evaporation, and in particular to a large-area evaporation boat, comprising an evaporating dish, a heating portion and a temperature-equalizing portion; a material inlet is formed on the top of the evaporating dish, and a cavity for evaporating material is formed inside; the heating portion is installed at the bottom of the evaporating dish for heating the evaporating dish; the temperature-equalizing portion is installed between the top surface of the heating portion and the bottom surface of the evaporating dish. By adding the temperature-equalizing portion between the heating portion and the evaporating dish, each part of the bottom of the evaporating dish can be heated evenly, ensuring that the vapor density of each area above the evaporating dish is the same, which is beneficial to improving the coating quality.

According to the refrigerator, when a compressor is shut down, the step of determining whether the water evaporation speed of an evaporation dish reaches the first water amount or not is executed, the first water amount is determined on the basis of at least one of the chamber volume, the refrigeration mode, the door opening frequency and the defrosting frequency of a refrigeration chamber, and the generation speed of defrosting water can be reasonably judged; if the water evaporation speed of the evaporation dish is below the first water quantity, it is considered that the water evaporation speed of the evaporation dish is smaller than the generation speed of the defrosting water, so that the condensation fan is kept in an on state, the evaporation capacity of the evaporation dish is improved through operation of the condensation fan, and the defrosting water in the evaporation dish can be gasified in time; the problem that defrosting water overflows out of the evaporating dish when the evaporating dish is filled with the defrosting water can be effectively prevented; if the water evaporation speed of the evaporation dish reaches the first water volume or above, it is considered that the water evaporation speed of the evaporation dish is larger than the defrosting water generation speed, and therefore the condensation fan is shut down, power consumption of the refrigerator can be saved, and the service life of the condensation fan can be guaranteed.

The utility model discloses a multi-flux liquid automatic concentration device which comprises a shell, a plurality of channels are formed in the front end of the shell, a touch screen is fixedly connected to the front end of the shell, a plurality of raw material water bottles are placed on the shell, a first connecting pipe fixedly connected with the shell is arranged on the shell in a penetrating mode, and a second connecting pipe fixedly connected with the first connecting pipe is arranged on the shell. The first connecting pipe is fixedly connected with a built-in pump, the built-in pump is arranged in the shell and fixedly connected with the shell, the built-in pump is fixedly connected with a second connecting pipe, the second connecting pipe penetrates through the shell and is fixedly connected with the shell, an evaporating dish is placed on the inner wall of the channel, and an ultrasonic liquid level meter is fixedly connected to the inner top of the channel. And the inner top of the channel is fixedly connected with a temperature measuring sensor. The ultrasonic liquid level meter and the temperature measuring sensor are arranged, so that heating, evaporation and concentration can be automatically carried out, the operation is simple, and the automation degree is high.

The invention discloses an extract extraction device for drug inspection and detection and a use method of the extract extraction device. The device comprises a base body, a central column body and an extract extraction assembly, an inner cavity is formed in the base body, and an annular step is arranged in the middle of the periphery of the base body. The central cylinder is supported on the base body and is arranged in the inner cavity; each extract extraction assembly comprises a leaching cavity, a leaching basket, a heating table and a pipeline system; the leaching cavity is vertically formed in the central column body, an upper cover is arranged at the upper end of the leaching cavity, a liquid outlet is formed in the lower end of the leaching cavity, and a liquid inlet is formed in the middle of the leaching cavity; the leaching basket is arranged in the leaching cavity in a matched mode, and the leaching basket is fixedly connected with the upper cover through a connecting rod. The heating table is arranged on the annular step, and an evaporating dish is arranged on the heating table; the pipeline system comprises a liquid outlet pipe, a liquid return pipe, a liquid discharge pipe, a circulating pump, a first control valve and a second control valve. The leaching, filtering and evaporating steps of the extract can be automatically completed, so that the extraction efficiency of the extract is improved, and the extraction difficulty of the extract is reduced.

The application relates to a refrigeration device, which comprises a refrigeration system, a box body for bearing the refrigeration system, an evaporation dish arranged in cooperation with the refrigeration system and a water guide pipe communicated to the inside of the evaporation dish, the refrigeration system comprises a compressor, a condenser, a first capillary tube and an evaporator connected through a pipeline, characterized in that the refrigeration system further comprises a heating pipe connected at the outlet end of the compressor, a second capillary tube connected at the outlet end of the heating pipe, the pipeline comprises a first pipeline arranged in parallel with the second capillary tube between the heating pipe and the condenser, a second pipeline connected in parallel with the first capillary tube between the condenser and the evaporator, a first valve for controlling the conduction of one of the second capillary tube and the first pipeline, and a second valve for controlling the conduction of one of the first capillary tube and the second pipeline. The application can control the evaporation speed of defrosting water or condensing water according to the requirement, and prevent the overflow condition caused by excessive water accumulation.

The utility model discloses a water absorption performance detection device, and relates to the field of material detection. The detection cylinder is arranged on the evaporation dish, and the detection cylinder is divided into a plurality of detection spaces by partition plates; the mounting frame is arranged in the detection space in a sliding manner; the cylinder cover is arranged at the upper end of the detection cylinder, and a plurality of height adjusting units are arranged between the cylinder cover and each mounting frame; the heating device is arranged on the evaporation dish and is matched with different detection spaces in the detection cylinder through the height adjusting unit, so that the detection spaces with different sizes are formed in the evaporation dish, the detection humidity in different spaces is controlled, and the water absorption performance detection of a plurality of detection humidity in the same group is achieved; the heating temperatures of the thermal insulation material at different heights are different, and the influence of different temperature gradient effects on the water absorption performance is realized, so that the water absorption performance of the material is comprehensively judged.

The invention discloses a steam generator. The steam generator comprises a main shell, a base fixedly arranged at the bottom of the main shell in a covering mode, an evaporation dish installed in the main shell, an opening formed in the main shell and opposite to the evaporation dish in position, and an evaporation cover arranged at the opening and used for guiding out steam generated in the evaporation dish. The evaporation dish is arranged in the main shell, the convex nozzle is fixed on the main shell and stretches into the bottom of the inner side of the evaporation dish, the separable water storage tank is arranged on the main shell, the water supplementing assembly is arranged between the water storage tank and the evaporation dish and used for guiding water in the water storage tank into the evaporation dish, and the control system takes a control circuit board as a core. Compared with a traditional technology only equipped with an evaporating dish, the steam generator is more intelligent and safer in function, the application scene is widened, and the steam generator is not limited to a single application scene any more.

The invention provides an evaporation capacity metering system and an evaporation capacity metering method.The evaporation capacity metering system comprises an evaporation dish, a water storage tank, overflow pipes, a water level gauge, a rain gauge, a controller and a water supplementing metering pump, the water supplementing metering pump is connected between the evaporation dish and the water storage tank, the overflow pipes are connected between the evaporation dish and the water storage tank, and the water level gauge is connected between the water level gauge and the rain gauge. The water level gauge is contained in the evaporation dish, the rain gauge is arranged outside the evaporation dish, and the water level gauge, the rain gauge and the water supplementing metering pump are further electrically connected with the controller; the evaporation capacity metering method comprises the steps that the evaporation capacity metering system is used, in each monitoring period, the initial water level of the evaporation capacity metering system is calibrated, the drainage metering pump is used for compensating rainfall capacity data, the evaporation capacity measuring precision is remarkably improved, and the system accumulative error is reduced; and the water level gauge, the water replenishing metering pump and the water draining metering pump can be mutually verified, so that the reliability of evaporation capacity metering data is further improved.

The present application relates to the technical field of extraction equipment, and discloses a multi-effect plant extract solution evaporation device, comprising: a first base, an evaporating dish and a water storage tank; a flame heater is placed in the middle of the top surface of the first base; the evaporating dish can be raised and lowered to be arranged directly above the flame heater, and the top surface of the evaporating dish is detachably provided with an end cover; the water storage tank is arranged on one side of the first base, and a chamber is arranged inside the water storage tank, and a connecting pipe is inserted and fixedly connected to the lower part of the side wall of the chamber. In the present application, the height of the evaporating dish can be adjusted up and down so that the outer flame of the flame heater contacts the bottom surface of the evaporating dish, thereby improving the heating efficiency and reducing the energy loss. At the same time, the hot steam generated by the evaporating dish can heat the water in the water storage tank, and the heated water can cooperate with the plant extract to achieve the effect of preheating, thereby reducing the concentration time and reducing the energy loss.

The utility model relates to the technical field of refrigeration, in particular to a novel display cabinet with an air outlet structure, which comprises a refrigeration mechanism. The refrigerating mechanism comprises a mounting shell, wheels mounted on the lower surface of the mounting shell, a rear cover arranged at the right end of the mounting shell and a front cover located at the left end of the mounting shell, a compressor is mounted on the right side of the lower surface in the mounting shell, and an evaporating dish is mounted in the middle of the lower surface in the mounting shell; a condensation fan is mounted on the left side of the lower surface in the mounting shell, and a condenser is mounted at the left end of the lower surface in the mounting shell. The mode of bottom air return and layer-by-layer air supply through the air duct is adopted, the cross-flow fan is adopted, the air volume is increased, the installation space is reduced, and the problems that air supply in a traditional display cabinet is not uniform, the temperature measurement difference of different shelf layers is large, and the cooling duration is not synchronous are solved.

This invention discloses a refrigerator and its control method. A water level sensor is installed on the evaporating dish to detect the remaining water in its drip tray. When the remaining water in the drip tray exceeds a threshold, the compressor speed is reduced to extend its operating time, thus keeping the drip tray in a higher temperature environment for a longer period, thereby accelerating water evaporation. Furthermore, during normal use, condensate may mix with small food scraps and flow into the evaporating dish through the refrigerator's drain hole. Over time, dirt will accumulate in the evaporating dish, potentially causing odors. This invention addresses this by installing a filter at the water inlet of the evaporating dish to remove impurities, and simultaneously using a collection device to collect these impurities and promptly reminding the user to clean the collection device, thereby reducing refrigerator odors.

The invention provides a determination method of a temperature pre-control value, a temperature control method and device of an evaporating dish, electronic equipment and a medium. The method for determining the temperature pre-control value comprises the following steps that a heating slope K1, a first cooling slope K2 and a second cooling slope K3 are obtained, the heating slope K1 is used for representing the heating rate of an evaporation pan in a first stage, the first cooling slope K2 is used for representing the cooling rate of the evaporation pan in a second stage, and the second cooling slope K3 is used for representing the cooling rate of the evaporation pan in a third stage; the second cooling slope K3 is used for representing the cooling rate of the evaporating dish in the third stage; the current dropping liquid flow is obtained; and obtaining a temperature pre-control value of the heating tube according to the current dropping liquid flow, the temperature rise slope K1, the first temperature drop slope K2, the second temperature drop slope K3 and the preset flow Q.

The embodiment of the utility model belongs to the household appliance technology, and provides a refrigerator which comprises a refrigerator body and a condenser. A compressor; an evaporation pan; an evaporation pipeline; the multiple fixing buckles are arranged on the inner bottom wall of the evaporation dish at intervals, each fixing buckle comprises a first buckle structure and a second buckle structure, each first buckle structure comprises a first connecting part, a second connecting part and a first fixing part which are connected in sequence, and each first fixing part is provided with a first arc-shaped surface; the second buckle structure comprises a third connecting part and a second fixing part which are connected with each other, and the second fixing part is provided with a second arc-shaped surface; the extending direction of the first fixing part is parallel to the extending direction of the second fixing part, an included angle is formed between the first fixing part and the length direction of the box body, the second arc-shaped face is opposite to the first arc-shaped face, a mounting cavity is formed by the second arc-shaped face and the first arc-shaped face, and the evaporation pipeline is inserted into the mounting cavity. The evaporation pipeline is not prone to falling off from the buckle.

The utility model belongs to tobacco equipment technical field discloses a kind of total amount determination devices of volatile component of tobacco essence and flavouring, including water bath, evaporating dish, sealing cover and pressure regulating assembly. Water bath is provided with sample to be measured, and water bath is provided with placement site, and evaporating dish is placed on placement site. Sealing space is formed in sealing cover, and evaporating dish is arranged in sealing space, and sealing space is communicated with water bath inside, that is, the pressure in sealing space is same with water bath inside. Pressure regulating assembly includes barometer and constant pressure valve, and barometer part is located outside sealing cover, and another part is inserted into sealing cover, to detect the pressure in sealing cover, and constant pressure valve is installed on sealing cover, and constant pressure valve can adjust the pressure in sealing cover. To ensure that the pressure in water bath is same, before detection, adjust constant pressure valve, and observe the pressure value shown by barometer simultaneously, and the pressure in sealing cover is adjusted to standard atmospheric pressure, then detection is carried out.

The utility model discloses diosmetin purification equipment which comprises a machine box, the machine box is divided into a spraying chamber and an evaporation chamber through a built-in partition plate, a shock excitation disc is arranged in an opening in the top of the spraying chamber, an outlet in the bottom face of the shock excitation disc is located in a disc opening of a filter disc, the bottom of the filter disc is connected with an inlet of a control valve through a bent pipe, and a valve body of the control valve is embedded in the partition plate. An outlet of the control valve is located above the evaporation dish, the evaporation dish is placed on a heater on the bottom surface of the evaporation chamber, an exhaust pipe in the evaporation chamber is communicated into an alcohol barrel, the alcohol barrel is connected with the input end of a circulating pump, and the output end of the circulating pump is connected with a shower located above the shock excitation disc; according to the equipment, coarse diosmetin can be dissolved in alcohol through the cooperation of the excitation disc and the shower head, the alcohol is filtered through the filter disc and then conveyed into the evaporation dish in the evaporation chamber to be evaporated and crystallized, the evaporated alcohol can flow back into the alcohol barrel to be repeatedly sprayed, and the equipment has the characteristics of energy conservation, emission reduction, easiness in operation and low pollution.

The invention discloses a method for cleaning a perfluoroalkoxy resin evaporation dish for etching. The invention relates to a cleaning method of a perfluoroalkoxy resin evaporating dish for etching. The cleaning method comprises the following steps: step 1, pre-cleaning the evaporating dish; step 2, carrying out ultrasonic cleaning; step 3, cleaning with ultrapure water; step 4, cleaning with nitric acid; step 5, cleaning with dilute aqua regia; step 6, evaporating to dryness by hydrofluoric acid; and step 7, testing on a machine. The clean PFA evaporating dish is obtained under the quartz etching condition, and the detection limit of a method for measuring eight impurity elements through quartz etching is reduced; a high-temperature-resistant and strong-acid-resistant PFA evaporating dish cleaning process can be obtained; the used evaporating dish can be cleaned for multiple times by adopting the cleaning method, so that the use frequency is increased, and the experiment cost is reduced.

The utility model discloses a solid-phase extraction column bracket for elution, and relates to the technical field of chemical analysis. Comprising a supporting frame and a first panel, the supporting frame comprises supporting plates, a bottom plate and a side plate, the supporting plates are in a step shape, the two supporting plates are arranged at intervals, the two ends of the bottom plate are connected with the bottom ends of the two supporting plates respectively, the side plate is arranged between the two supporting plates, and the two ends of the side plate are connected with the side walls of the two supporting plates respectively; the plurality of first panels are arranged between the two supporting frames and are respectively arranged on horizontal planes with different heights, a plurality of second through holes are formed in the second panels, and one second panel is correspondingly arranged at the lower end of each first panel; and the first through holes in the first panel and the second through holes in the second panel are coaxially arranged and are in one-to-one correspondence. The solid-phase extraction column bracket for elution provided by the utility model can prevent a solid-phase extraction column and an evaporating dish from toppling over in an experiment process.