376results about "Distillation in rotating vessels" patented technology

Embodiments presented provide for a multirotational counter rotating reactor. The reactor is configured to accept a fluid stream and separate the fluid stream into high quality liquid and gaseous phases through spinning of the sets of discs as well as through performing a heat transfer to the fluid stream.

The invention discloses an intelligent automatic control rotary evaporator, and belongs to the technical field of chemical instruments. An intelligent automatic control rotary evaporator comprises a bottom box and a heating pot, a rotary machine head is installed on the bottom box, a condenser and an evaporation bottle are installed on the rotary machine head, and the lower end of the condenser is connected with a collection bottle; precise adjustment of the height and the inclination angle of the evaporation bottle is achieved through the electric telescopic rod and the rotating shaft, and the assembly and disassembly process of components is simplified through the bottle retreating locking nut, the condensation installation nut and other structures; heating temperature control automation is realized by combining a temperature sensor and a control box, and constant-speed rotation of the evaporating flask is ensured through motor driving; the stability of the condenser is enhanced by means of a first adjusting rod and a fixing sleeve, and material adding in a vacuum environment is achieved by integrating a deflation charging valve and a vacuum extraction opening; the control box integrates a multi-module control function, supports the replacement of parts of different specifications, remarkably improves the adjustment convenience, operation efficiency, temperature control precision and experiment adaptability of equipment, and is high in automation degree.

The utility model relates to the technical field of evaporator equipment, and discloses a rotary evaporator which comprises a rotary evaporator body, a control terminal is arranged on the front face of the rotary evaporator body, a heating pot is fixedly connected to the upper surface of the rotary evaporator body, and a base is fixedly connected to the upper surface of the rotary evaporator body. The front surface of the base is fixedly connected with a rotating sleeve, one end of the rotating sleeve is fixedly connected with a distillation flask, and the other end of the rotating sleeve is fixedly sleeved with a condenser. The evaporator is rotated, a concentrated sample is taken out from the distillation flask and subjected to subsequent analysis or storage, when the water content in the heating kettle is reduced along with continuous heating of the heating kettle, the water level detector detects that the water level drops, and then the electric telescopic rod is opened through the controller; an electric telescopic rod drives a pushing rod to move up and down through a driving plate to supplement water in the warm water tank into the heating pot, and the problem that heating is uneven due to the fact that water in the heating pot is reduced is solved to a certain extent.

The utility model discloses a system for step-by-step separation and conversion of tar residues, which comprises an ultrasonic cleaning instrument, the liquid outlet end of the ultrasonic cleaning instrument is connected with a solid-liquid separator through a pipeline, the liquid outlet end of an upper liquid layer of the solid-liquid separator is connected with a delivery pump I through a pipeline, and the delivery pump I is connected with the liquid inlet end of a rotary evaporator I through a pipeline. Concentrated organic matters in the rotary evaporator I are conveyed into a vertically arranged chromatographic column through a pipeline, the lower end of the chromatographic column is connected with a sand core funnel, a collecting tank is placed below an outlet of the sand core funnel, the collecting tank is connected with a conveying pump V through a pipeline, and the conveying pump V is connected with a liquid inlet end of the rotary evaporator II through a pipeline. According to the method, high additional organic matters in the tar residues can be effectively extracted by adopting a mode of synergism of ultrasonic-assisted extraction and column chromatography separation, so that resource utilization of the tar residues is realized. The solvent and the eluent selected in the whole process can be recycled through a rotary evaporator, the operation cost is low, and near-zero emission can be realized.

The invention provides treatment equipment for ethanol and water mixed mother liquor and a sodium nitrate and potassium nitrate purification method, and relates to the technical field of waste liquid treatment, the treatment equipment comprises a flocculation box, a flocculation frame and a driving mechanism; a mounting plate is mounted at the top of the flocculation frame through bolts, the driving mechanism comprises a mounting frame mounted on the upper surface of the mounting plate, and a top plate and a bottom plate are fixedly arranged on the inner wall of the mounting frame. According to the scheme, in the overflowing and liquid discharging process, the water body in the flocculation box can be changed, flocculation groups with small sizes can turn over upwards, and the inclined plate with large initial inclination can block and capture the flocculation groups which turn over upwards, so that the flocculation groups are prevented from overflowing along with water flow through the inclined plate; meanwhile, the linkage plate can be adopted to control the multiple inclined plates to synchronously turn over in a linkage mode to change the inclination, flocculation groups captured on the inclined plates are shaken to be precipitated downwards, and it is guaranteed that overflowing and liquid discharging can be fast, so that waste liquid can be well flocculated, efficient and stable flocculation is guaranteed, and follow-up discharging or recycling is facilitated.

The utility model discloses a rotary evaporator which comprises a heating base, a water bath kettle is arranged on the heating base, a connecting base is arranged on one side of the heating base, a lifting device is arranged on the connecting base, and the lifting device comprises a fixed seat connected with the connecting base and a lifting platform vertically connected with the fixed seat in a sliding mode. A rotary seat is arranged on the lifting platform, a distillation bottle and a cooling bottle are respectively arranged on two sides of the rotary seat, the distillation bottle rotates around the central axis of the distillation bottle under the driving of the rotary seat, the bottle body of the distillation bottle is positioned in the water bath kettle, and a spiral pipeline is arranged on the distillation bottle along the surface of the bottle body; the distillation bottle is communicated with the cooling bottle through a rotating seat, and a collecting bottle is communicated below the cooling bottle. During rotary evaporation, high-temperature liquid in the water bath kettle enters the pipeline and flows along the bottle body, even if the bottle body of the distillation bottle rotates, the bottle body exposed out of the liquid level is continuously heated by the high-temperature liquid in the pipeline above the liquid level, and the evaporation efficiency is improved.

The utility model discloses a novel rotary evaporator, which relates to the technical field of experimental equipment and comprises a base and a receiving bottle. A heating pot is fixedly connected to one side of the upper end of the base, a rotary evaporator body is fixedly connected to the middle of the upper end of the base, a rotating rod is rotatably connected to one side of the rotary evaporator body, and a first constraint structure is fixedly connected to the side, close to the heating pot, of the rotating rod and comprises a connecting block structure; a plurality of limiting structures are fixedly connected to the middle of the connecting block structure, a distillation flask is in threaded connection with an inner cavity of the rotating rod, and a condenser is fixedly connected to the side, away from the first constraint structure, of the rotating rod. According to the utility model, through the cooperation of the connecting block structure and the limiting structure, the positions of the clamping block structures can be limited, and then through the cooperation of the plurality of clamping block structures, the joints of distillation flasks with different sizes and the rotating rod can be restrained, so that the flexibility and universality of the device can be improved.

The utility model discloses a fixing device for a rotary evaporator, which belongs to the technical field of rotary evaporators and comprises a base, a heating box is arranged at one end above the base, a lifting component is arranged at one end in the middle above the base, a connector is arranged at one end of the lifting component, and a convenient fixing component is arranged at one end of the connector. One end of the convenient fixing assembly is provided with a flask, the other end of the connector is provided with a condenser, a collecting bottle is arranged below the condenser, and a supporting assembly is arranged below the collecting bottle. By arranging the convenient fixing assembly, the flask can be conveniently installed and fixed, the convenience is high, when the structure is used, the flask can be conveniently installed and fixed, and the practicability is high. The flask can be fixed by directly rotating the rotating handle, the fixing and clamping effects on the flask are good through the cooperation of the fastening spring and the fastening pad during fixing, and the collecting bottle is convenient to disassemble and assemble through the arrangement of the supporting assembly.

The present disclosure relates to a stripper, separator or desorber device (100). The device comprises a housing (16), an inlet (6) into the housing (16) connected to a supply of target component rich solvent or absorbent (21), and internal configuration in the housing (16) configured to separate the target component from the rich solvent or absorbent (22), a target component outlet (2; 25) to discharge form the housing (16) target component separated from the rich solvent or absorbent; and a solvent or absorbent outlet (7) to discharge from the housing (16) lean solvent or absorbent (21) remaining after separation of the target component from the rich solvent or absorbent (22). Furthermore, the internal configuration in the housing (16) comprises a rotatable rotor (17) having a plurality of essentially axially extending channels (1) therein. Moreover, the present disclosure relates to a system comprising the stripper or desorber device (100), as well as an absorber device (200).

A novel process for desulfurizing spodumene smelting slag using EDTA is presented. This process uses the final solid waste obtained from the water leaching lithium extraction process after sulfuric acid roasting of spodumene as raw material. A prepared EDTA solution is added to the smelting slag containing approximately 10% calcium sulfate, allowing the raw material to fully react with the EDTA solution, thus achieving desulfurization of the smelting slag. Finally, the filtrate is subjected to rotary evaporation precipitation, and the EDTA solution is recovered and recycled. This process has high resource utilization, not only achieving 99.9% desulfurization of the smelting slag in a short time but also enabling the recycling of the EDTA solution. The desulfurization method provided by this process is highly efficient, simple, and transforms waste into valuable resources, increasing economic benefits. Furthermore, it effectively addresses the environmental compatibility issues of solid waste in the existing lithium mining industry, which is of great significance for the sustainable and high-quality development of the lithium battery industry.

The invention discloses osmanthus essential oil and a preparation method thereof. According to the invention, osmanthus fragrans extract is used as a raw material, and the osmanthus fragrans essential oil is prepared by adopting an ethanol crystallization + molecular distillation + n-hexane secondary crystallization technology. The osmanthus essential oil prepared by the method is light yellow to orange red, clear and transparent, has the original rich fragrance of osmanthus, is still transparent liquid under a low-temperature storage condition, and does not have a solidification phenomenon; the method is low in equipment investment, simple to operate and good in repeatability, and has very high commercial application value and prospect.

The invention relates to the technical field of ketone processing, in particular to a multifunctional treatment box for synthesizing 2-fluoro-benzophenone.The multifunctional treatment box comprises a processing treatment box, and a plurality of sets of processing treatment cavities used for synthesizing 2-fluoro-benzophenone are arranged in the processing treatment box from top to bottom; the processing treatment cavity comprises a mixing and dissolving reaction cavity which moves up and down along the upper side area in the processing treatment box, and a contact heating cavity and a water bath cooling cavity which are fixed in the processing treatment box are separately arranged on the upper side and the lower side of the mixing and dissolving reaction cavity at intervals; the bottom of the water bath cooling cavity is communicated with a washing cavity for washing the cooled solution in a pressing manner, the bottom of the washing cavity is communicated with a separation cavity for separating the washed solution, and the bottom end of the separation cavity is communicated with a concentration cavity for rotationally evaporating the separated solution in a control manner; the bottom end of the concentration cavity is communicated with a purification cavity in an automatic detection opening and closing manner. The treatment box can be used for automatically processing ketone in an energy-saving manner, and meanwhile, the low-cost operation is kept.

The invention relates to a green process for extracting natural components of pericarpium citri reticulatae with water and application of the natural components in a beverage. The process comprises the following steps: crushing and drying a dried orange peel raw material; extracting with water at 105-125 DEG C under 0.8-1.5 MPa under a low-oxygen condition to obtain a first extracting solution and first-stage residues; the residues are extracted at the temperature of 130-150 DEG C and the pressure of 1.5-2.2 MPa, and a second extracting solution is obtained; treating the second extracting solution at the temperature of 145-165 DEG C and the pressure of 1.8-2.5 MPa to obtain a low-ester pectin component containing bound flavone; mixing the first extracting solution with the low-methoxyl pectin component, and homogenizing, so that the volatile oil component is dispersed in the water phase containing the low-methoxyl pectin component; and concentrating and / or drying the obtained dispersion to obtain the pericarpium citri reticulatae extract. The extract can be used as a natural flavor additive for beverages.

The utility model provides a rotary evaporator, and belongs to the field of experimental instruments. The rotary evaporator comprises a platform, a heating device, a rotating shaft, a tray, a gravity sensor and a display terminal, the tray is positioned in the heating device; one end of the rotating shaft is connected with the motor, and the other end of the rotating shaft is connected with a tray in the heating device; the gravity sensor is fixed in the middle of the rotating shaft and located between the platform and the heating device; the display terminal is electrically connected with the gravity sensor. The gravity sensor is arranged in the middle of the rotating shaft, and the gravity sensor detects the gravity signal and provides the gravity signal to the display terminal, so that the display terminal displays the evaporation progress based on the gravity signal, and energy waste caused by continuous evaporation when evaporation is completed is avoided. And the rotation speed and the heating temperature can be regulated and controlled in the evaporation process based on the evaporation progress provided by the display terminal, so that the evaporation efficiency is improved.

The utility model provides a low-temperature concentrator, and aims to solve the technical problems that in the process of synthesizing fondaparinux sodium, a traditional rotary evaporator is adopted for concentration and separation, time consumption is long, and products have degradation risks. The concentration barrel is sequentially divided into a middle barrel body and an upper barrel body from bottom to top, and the inner spaces of the middle barrel body and the upper barrel body are mutually communicated. And the middle cylinder is provided with a heating unit. And a vacuum pipeline is arranged at the top of the upper cylinder body. The rotating unit is provided with a rotating table, the rotating table is arranged in the middle barrel, and a containing groove is formed in the rotating table from top to bottom. The turntable is connected with a motor. The liquid injection unit is matched with the rotary table and comprises a liquid pipeline and a liquid injection head. One end of the liquid pipeline penetrates through the side wall of the middle cylinder and then extends to the upper part of the rotary table. The liquid injection head is movably installed at one end of the liquid pipeline. A liquid injection hole set matched with the containing groove is formed in the bottom end of the liquid injection head and used for liquid injection of the containing groove. And through the matching effect between the rotary table and the liquid injection head provided with the liquid injection hole group, the liquid material is distributed into a liquid film in the accommodating groove, and the evaporation area is favorably increased.

The utility model discloses a nicotinic acid concentration device, which belongs to the technical field of nicotinic acid concentration and comprises a concentration component and a heating component, the concentration component comprises a rotary evaporator base, a material bottle opening, a condensing device and a glass pipeline, the condensing device is arranged on the rotary evaporator base and connected with the material bottle opening through the glass pipeline, and the heating component is arranged on the glass pipeline. The glass pipeline is provided with a heating assembly which is used for rapidly heating and drying moisture in a material bottle opening. According to the utility model, the problem that the bottle mouth is locally overheated and fractured due to the fact that the material bottle mouth is difficult to take down and the air blower needs to be used for a long time in the existing nicotinic acid concentration process can be solved. According to the utility model, the annular heating ring is additionally arranged at the material bottle opening, and the material bottle opening can be quickly heated through the heating ring, so that moisture at the material bottle opening can be dried, the problem that the bottle opening is broken due to over-high local temperature when a blower is used can be avoided, and the material bottle opening can be safely taken down in time and is convenient to use.

A rotary evaporation device capable of adjusting the vacuum degree comprises a rotary evaporator, a condensation system and a vacuum system. The vacuum system comprises a diaphragm pump capable of adjusting the vacuum degree, an air inlet pipe of the diaphragm pump is connected with a first condensation pipe in the rotary evaporator, an exhaust pipe of the diaphragm pump is connected with an outer pipe inlet of a second condensation pipe, a condensing agent of the condensation system is introduced into an S-shaped inner pipe of the second condensation pipe, and the lower end of the second condensation pipe is communicated with a second collection bottle; the condensing system comprises a condensing agent inlet pipe, a condensing agent outlet pipe and a condensing agent return pipe, the condensing agent inlet pipe is connected with the cold pump and an inlet of the snakelike inner pipe of the first condensing pipe, and the condensing agent outlet pipe is connected with an outlet of the snakelike inner pipe of the first condensing pipe and an inlet of the snakelike inner pipe of the second condensing pipe; and the condensing agent return pipe is used for connecting an outlet of the S-shaped inner pipe of the second condensing pipe and an aspirator in the cold system. According to the device, the proper vacuum degree can be adjusted according to different solvents, and the solvents can be more sufficiently collected.

The rotary evaporation device comprises a rotating assembly, a container base, a sealing assembly and a heating assembly, the container base is arranged on the rotating assembly, the container base is used for containing a container containing a sample to be subjected to rotary evaporation, the rotating assembly is used for driving the container base to rotate, and the sealing assembly can move in the first direction to seal or unseal an opening of the container. The sealing assembly is provided with an exhaust channel, one end of the exhaust channel is used for being communicated with an opening of the container, the heating assembly can move in the second direction to be close to or away from the container base, and the heating assembly is used for heating the container, so that the rotary evaporation device can achieve automation of the sample drying process through the rotating assembly, the sealing assembly and the heating assembly; the labor cost is reduced, and the experiment precision and efficiency are improved.

The utility model relates to rotary evaporator bottle technical field, concretely relates to a kind of anti-overflow stirring assembly for rotary evaporator bottle, the anti-overflow stirring assembly for rotary evaporator bottle includes stirring rod and at least one stirring vane, the stirring rod is inserted into the rod body inside rotary evaporator and is provided with at least one described stirring vane, multiple stirring holes are uniformly opened on the stirring vane. When the rotary evaporator starts to rotate in actual application, the stirring rod in the bottle rotates with the rotary evaporator, and at the same time, the blade surface of the stirring vane on the stirring rod continuously shears the liquid in the bottle, thereby playing a stirring role, making the liquid in the bottle evenly heated, to prevent violent boiling. Further based on multiple stirring holes opened on the stirring vane, while stirring liquid, liquid can also be turned upside down based on stirring hole, thereby further improving stirring efficiency, making the liquid in the bottle more evenly heated, effectively preventing liquid from violent boiling.

The invention relates to a device for the continuous thermal separation of a substance fed into a processing chamber in a tank. In addition to the tank, the device comprises a heating device with an external heat source and a rotating mechanism with an external rotary drive. The heating device and the rotary drive are configured so that when both the heating device and the rotary drive are operated with their respective operating input power P hd and P rm During operation, the volume V near the inner surface of the tank p The operating temperature T op , the resulting operating temperature is equal to or higher than the evaporation temperature T of at least one liquid constituting part of said substance e .

The utility model relates to the technical field of experimental instruments, and particularly discloses a rotary evaporator. Comprising an evaporation assembly and a water bath; the top of the water bath kettle is provided with an opening and a matched kettle cover; the pot cover is provided with a partial opening. The opening is communicated with the interior of the water bath kettle; the water bath kettle comprises an inner container and a shell; the inner container is arranged in the shell; the pot cover is matched with the mounting groove to cover the inner container, and the pot cover rotates in the mounting groove to adjust the orientation of the opening. A cleaning mechanism is further arranged on one side of the water bath kettle; the cleaning mechanism comprises a cleaning cylinder and a nozzle; the nozzle is communicated with the pressure tank; the pressure tank communicates with the water supply unit; a cleaning opening capable of being opened and closed is formed in a rotary bottle of the evaporation assembly; and the nozzle enters or exits from the pressure tank through the cleaning air cylinder from the cleaning port for cleaning operation. The cleaning mechanism disclosed by the utility model can select proper cleaning strength to carry out targeted cleaning according to different types and degrees of attached pollutants in the rotary bottle.

The invention provides a preparation process of palladium chloride dihydrate, which comprises the following steps: S1, respectively adding palladium powder, high-purity water and a reducing agent into a reactor, stirring and heating, and carrying out constant-temperature reaction and standing for layering to obtain activated palladium powder; s2, hydrochloric acid is added into the activated palladium powder, then stirring and heating are conducted, hydrogen peroxide is dropwise added, a reaction is conducted till the palladium powder is completely dissolved, and a dissolved solution is filtered; s3, transferring the filtrate into an evaporator for dissolving, and then carrying out vacuum concentration; s4, repeating the step S3 for 3-5 times until the pH value of the solution reaches 1-5.5; and S5, carrying out vacuum concentration on the solution, and obtaining palladium chloride dihydrate when the palladium content reaches a set value. The direct recovery rate of the preparation process is high, the raw material loss can be effectively reduced, the production benefit is improved, the operation process is simple, and the prepared palladium chloride dihydrate has the nitrate-free characteristic, also has good water solubility and can meet the use requirements in different scenes.

The invention relates to the technical field of active ingredient extraction, and particularly provides an extraction method for classifying and screening active ingredients, raw materials are subjected to low-temperature freeze-drying pretreatment by adopting supercritical CO2, and treatment is performed for 4-6 hours under the conditions of minus 40-minus 20 DEG C and 8-12 MPa, so that the active ingredients are reserved to the greatest extent; through gradient ultrasonic-assisted extraction of ultrapure water, a 50% ethanol solution and a 95% ethanol solution, step-by-step separation of water-soluble, alcohol-soluble and fat-soluble components is realized; carrying out multi-dimensional purification by using a composite chromatographic column containing a 0.2 mu m ceramic membrane layer, a macroporous adsorption resin layer and a sephadex layer; a two-channel biosensor array is adopted to synchronously detect a cell response signal and a molecule binding signal, and components with the activity intensity reaching 80% or above are screened; and finally, carrying out vacuum rotary evaporation concentration and spray drying to obtain a finished product, and completing system purity verification through a high performance liquid chromatography-mass spectrometry technology to form a complete quality control system.

The utility model discloses a high-sealing rotary evaporator, and relates to the technical field of evaporators. The device comprises a base, one end of the base is fixedly connected with a water bath heater, one end of the base is provided with a three-way pipe, the top of the three-way pipe is fixedly connected with a condensation pipe, the bottom of the three-way pipe is fixedly connected with a collecting pipe, the input end of the three-way pipe is fixedly connected with a connecting pipe, and the top of the connecting pipe is fixedly connected with a vacuum pump; the input end of the connecting pipe is rotationally connected with an air guide pipe. When the locking threaded ring is pulled to be arranged at the input end of the air guide pipe in a sleeving mode, the locking threaded sleeve is screwed to be in threaded connection with the locking threaded ring, one end of the T-shaped sealing ring is pushed to be inserted into the first rubber sealing ring, and therefore the first rubber sealing ring is extruded to deform and fills a gap between the locking threaded ring and the air guide pipe; therefore, the connection stability and sealing performance between the evaporation beaker and the gas guide pipe are effectively improved, and the evaporation efficiency of the device and the accuracy of experimental results are improved.

The utility model discloses a rotary evaporator, and particularly relates to the technical field of evaporators, which comprises a base, a support rod is fixedly arranged at the top end of the base, an evaporator main body is fixedly arranged at the front end of the support rod, a condenser is connected to the fixed end part of the evaporator main body, and a rotary bottle is in threaded connection to the rotary end part of the evaporator main body; one end of the rotary bottle penetrates through the inclined surface on the protective frame and is rotationally connected with the inclined surface through a sealing bearing; and a sealing air bag cushion is fixedly arranged in the sealing connecting frame, and a heating assembly is arranged at the bottom of the sealing connecting frame. The rotary bottle is rotatably arranged in the protective frame, and the protective frame and the heating pot are hermetically connected together through the seal connecting frame, so that the temperature around the rotary bottle is more uniform and controllable, the condition of heat waste caused by steam loss is avoided, the use effect is better, and the practicability is stronger.

The utility model relates to the technical field of rotary evaporators, in particular to an anti-suck-back rotary evaporator which comprises a rack, a rotating mechanism is arranged on the upper side of the rack and comprises a rotating rod rotationally arranged on one side of the rack, a connecting column is fixed to one end of the rotating rod, and a through channel is formed in the inner side of the connecting column. A first motor is fixed to the upper side face of the connecting column, the output end of the first motor penetrates through the connecting column to be fixed to the upper side of the adjusting ball valve, and a transmission space is formed in the end, located in the through channel, in the connecting column and in the rotating rod; the other end of the transmission space is rotationally provided with a belt wheel, and the belt wheel and the transmission belt limiting table are sleeved with a transmission belt. The rotary evaporator solves the problem that the conventional rotary evaporator can only prevent the suck-back phenomenon by adjusting parameters in advance and cannot deal with the sudden suck-back condition.

The invention discloses a process and a device for improving the flash point of waste tire pyrolytic oil, and relates to the technical field of the flash point of the waste tire pyrolytic oil. The system comprises a raw material pump, a raw material heavy oil heat exchanger, a heavy oil pump, a raw material flue gas heat exchanger, a rotary heating evaporator, a horizontal storage tank, a vertical tower, a tower top water cooler, a receiving tank, a light oil delivery pump, a water cooler and a tower top return pipeline. According to the process flow and the device, the flash point of the heavy oil can be controlled between 45 and 70, the additional value of the tire pyrolytic oil can be improved, the economic benefit is remarkable, the original heating furnace is modified, the spray head is additionally arranged in the rotary heating evaporator, and after the tire pyrolytic oil passes through the spray head, the flash point of the heavy oil can be controlled between 45 and 70. Light components sprayed to the furnace wall of the rotary heating evaporator in an atomized mode are instantly gasified, heavy components enter the lower portion of the rotary heating evaporator heating furnace, and along with continuous feeding, the liquid level reaches the section of a discharging opening of the rotary heating evaporator heating furnace, and the heavy components are automatically discharged into the tank.

The utility model discloses a precious metal recovery rotary evaporator which comprises a working table, a support is fixedly installed on the upper surface of the working table, a rotary evaporator body is arranged on the front face of the support, a shell is fixedly installed on the upper surface of the working table, and an electric cylinder is fixedly installed on the inner bottom wall of the shell. A sliding shell is fixedly installed at the telescopic end of the electric cylinder, a gear motor is fixedly installed on the right side face of the sliding shell, and a rotating rod is fixedly installed at the output end of the gear motor. According to the device, an electric push rod is arranged to drive a sliding block to slide in a sliding opening, then a transparent plate can be moved to the front of the water bath kettle for protection, the problem that hot water in the water bath kettle splashes outwards to scald workers during use is solved, and the safety during use is improved; the arranged gear motor is used for driving the rotating rod and the water bath kettle to turn over, and meanwhile, under the cooperation of the gear motor and the electric cylinder, water in the water bath kettle can be rapidly discharged.

The utility model discloses a splash-proof ball with liquid adding and discharging functions. The splash-proof ball is arranged between a rotating shaft of the rotary evaporator and an evaporating flask and comprises a hollow ball body, a frosted interface I and a frosted interface II which are fixed on the hollow ball body, a double-hole pipe which is fixed with the frosted interface II and extends into the hollow ball body, a sample adding pipe fixed on the frosted interface II, and a liquid discharging pipe fixed on the hollow ball body. The structure of the splash-proof ball is optimized, so that the splash-proof ball has liquid adding and liquid discharging functions, evaporation liquid can be conveniently supplemented to the evaporation bottle and condensate can be conveniently discharged on the premise that the splash-proof ball is not disassembled, the splash-proof ball does not need to be disassembled in actual rotary evaporation operation, the splash-proof ball is more suitable for continuous rotary evaporation treatment, and the production efficiency is improved. Convenience is provided for rotary evaporation of a large amount of rotary evaporation liquid.