78 results about "Water baths" patented technology

The present application relates to the technical field of electric heating constant temperature water bath, disclose a kind of electric heating constant temperature water bath for replacing water liquid, comprising: kettle body, with electric heating wire and groove plate, groove plate distribution has liquid inlet hole, drain pipe, one end is fixedly installed on kettle body;Replacement box is provided with containing cavity, replacement box and the other end of drain pipe are rotatably connected, replacement box is opened with first through-hole;When replacement box is in initial state, the bottom surface in replacement box and the bottom surface in kettle body are flush, first through-hole is located on the side wall in the height direction of replacement box body;Replacement box is rotated to first rotating state, the bottom surface of containing cavity is lower than the bottom surface of containing groove, first through-hole is located at the highest point of replacement box;When replacement box is rotated to second rotating state, kettle body is drained through first through-hole;Floating plate and liquid inlet hole are one-to-one corresponding, when replacement box is rotated to first rotating state, floating plate blocks liquid inlet hole.The present application can replace water liquid safely during experiment.

This invention relates to the field of spraying equipment technology and discloses a multi-component precise proportioning mixing device for spraying, including a main agent tank, a curing tank, a transparent mixing tank, and an intelligent formula management and control system. The main agent tank is used to store the main agent, the curing tank is used to store the curing agent, and the transparent mixing tank is used to remix the initially mixed main agent and curing agent. Both the main agent tank and the curing tank are equipped with jacketed water bath constant temperature tanks on their outer walls. Circulation inlets are provided on both the top and bottom sides of the jacketed water bath constant temperature tanks. Liquid level sensors are installed through the top side of both the main agent tank and the curing tank. Viscosity drift is eliminated through the tank water bath and pipeline insulation, ensuring servo metering accuracy. A three-stage series mixing path is adopted to sequentially achieve pre-dispersion, deep stirring, and final homogenization, solving the problems of uneven dispersion at high proportions and insufficient mixing at high viscosity, and improving the consistency of coating curing.

The utility model discloses a kind of heat preservation boxes for melting solid barrelled material, belong to fine chemical equipment device technical field.A kind of heat preservation box for melting solid barrelled material, including box, the box is rotatably connected with lid, further include: side annular heating pipe, install on the side wall of the box inside;Bottom heating coil, install on the bottom of the box, the side annular heating pipe is communicated with bottom heating coil, and the box is provided with for steam to enter and discharge pipeline;Through steam to enter side annular heating pipe and bottom heating coil, the temperature in the box can be promoted;The utility model provides a kind of heat preservation box for melting solid barrelled material for chemical enterprise, it is convenient to use, can set different temperature control according to the temperature required by melting material, solve the problem of traditional water bath heating tank and the problem that the smell generated cannot be collected and handled with water vapor overflow.

The application discloses a valve micro-leakage detection method and device based on acoustic response analysis. The method comprises the following steps: applying an active acoustic excitation signal to a valve in a sealed state; synchronously collecting acoustic wave response signals generated by excitation through multiple acoustic sensors; extracting acoustic characteristic parameters such as amplitude variation, phase variation and spectral energy; comparing with a no-leakage reference sound field model to determine micro-leakage. The leakage source is located by using a beam forming algorithm, and a characteristic vector composed of amplitude variation, phase variation, spectral energy, MFCC and kurtosis is constructed, which is input into a convolutional neural network model to identify leakage causes such as sealing surface wear, sealing pad damage or micro-cracks. The detection system of the application comprises an excitation control module, a collection module, a processing module and a judgment module. The method does not require a water bath, has high sensitivity and is suitable for automatic production detection.

This invention relates to the field of pressure resistance testing of water-jet loom parts, specifically to a pressure resistance testing device for ceramic plungers in water-jet looms. It includes a testing platform with a water tank on one side. A lifting frame that can slide vertically back and forth is located above the testing platform. A pressure testing head for applying axial pressure to the ceramic plunger is located in the middle of the lifting frame. High-speed cameras for capturing the entire deformation and fracture process of the ceramic plunger are symmetrically arranged on both sides of the pressure testing head. A pneumatic slide is located on the upper surface of the testing platform, and an electric clamp is located in the middle of the pneumatic slide. A transparent water bath tube is coaxially located above the electric clamp, and the clamping end of the electric clamp extends into the transparent water bath tube. The lifting frame also includes a rinsing and water replenishment mechanism, including a corrugated pipe connected to the water tank, a liquid storage box, and a sliding dropper. The liquid storage box stores a fluorescent penetrant. This device can simulate the actual working environment of the ceramic plunger, observe the microcrack propagation process in real time, and significantly improve the accuracy and reliability of the test results.

The utility model provides a kind of efficient water bath type cooler, belong to cooling equipment technical field.It solves the problem that the filter screen structure is lacked on the pipeline of existing water bath type cooler, leading to water inflow carrying impurities, affecting use problem.This efficient water bath type cooler, including two water inlet pipes and the water outlet pipe between two water inlet pipes, two water inlet pipes and water outlet pipe are connected by valve pipe, valve pipe adopts tee structure, is water inlet end one and water inlet end two and water outlet end respectively, water inlet end one and water inlet end two are provided with filter assembly, and the filter area that is communicated with water outlet end is formed between two filter assemblies, filter assembly includes framework and the metal filter screen of integral molding with framework, the upper end transverse length of the longitudinal section of framework is less than its lower end transverse length, metal filter screen is inclined to set, and flange plate is fixedly connected on water inlet end one and water inlet end two.The utility model has the advantages of filtering function, and good filtering effect.

This invention discloses a simulated oxidation detection device and method for lead-acid battery casings, including a heating furnace, a beaker placed on the furnace, and an adjusting bracket placed on the side of the furnace. One end of the adjusting bracket extends above the beaker, and a temperature measuring element and a sample are connected to the adjusting bracket, with the temperature measuring element and the sample immersed in cooling water. During detection, the heating furnace is turned on, and cooling water from a workshop water bath is placed in the beaker, with the internal water temperature heated to a stable 40℃±1℃. Two prepared samples are taken: sample A is wrapped with a PE protective film, and sample B is without a film. They are connected to the bracket, with one end immersed in water, and continuously bathed for 24 hours. Finally, the two samples are compared with a control sample. Compared with existing technologies, this invention has a scientifically sound structure, is simple and convenient to operate, and can screen out batches of ABS granules with poor acid resistance and heat resistance at the material stage, preventing them from flowing into subsequent injection molding and battery assembly processes, thus eliminating the phenomenon of discoloration and mottling of the casing from the source.

The application discloses a self-adaptive ice-water bath sample rack and relates to the technical field of laboratory equipment. The self-adaptive ice-water bath sample rack comprises a supporting frame, a first partition plate and a second partition plate, the supporting frame is in a U-shaped structure formed by one bottom plate and two side plates, the first partition plate is slidably connected between the two side plates and is fastened through fasteners, a first through hole is formed in the first partition plate, a plurality of first elastic valves are arranged around the first through hole, the plurality of first elastic valves enclose a first clamping space, the second partition plate is installed between the two side plates and is located between the first partition plate and the bottom plate, a second through hole is formed in the second partition plate, a plurality of second elastic valves are arranged around the second through hole, and the plurality of second elastic valves enclose a second clamping space; wherein the inner diameter of the first clamping space is different from the inner diameter of the second clamping space, so that the first elastic valves and the second elastic valves can be cooperatively matched to self-adaptively clamp sample tubes with different pipe diameters.

The utility model relates to the field of water bath constant temperature oscillator especially relates to a kind of high-efficiency stirring device for ultrasonic water bath constant temperature oscillator, including cabinet, the top outer wall one end of cabinet is equipped with locating groove, and cabinet is located at the heating groove center and is equipped with, the outer wall of one side of cabinet is equipped with drive groove, and the top inner wall of drive groove is equipped with oscillation component, heater and ultrasonic generator are installed in the inner wall of the bottom of the heating groove of cabinet, and temperature sensor is installed in the inner wall of the bottom of cabinet.The utility model starts drive motor and drives the rotation of main shaft and impeller, keeps the uniformity of heater heating, keeps the uniformity of heat transfer;After ending culture, install the top cover in the locating groove of cabinet, start the disinfection lamp in the inner wall of top cover and carry out disinfection and kill in the inner wall of the heating groove of cabinet, facilitate subsequent use.

This invention belongs to the field of electrochemical analysis and gas dissolution detection technology, and particularly relates to a testing device and method for measuring the conductivity of carbon dioxide aqueous solutions. The testing device includes: a water container for holding the solution; a monitoring mechanism located at the bottom of the water container; a venting and exhausting mechanism located at the top of the water container and connected to the interior of the water container; a liquid addition and drainage mechanism located on the side wall of the water container and connected to the interior of the water container; a constant temperature water bath for housing the water container; and a data acquisition and control system electrically connected to the monitoring mechanism, which records the conductivity and temperature data of the solution. This invention can accurately measure the conductivity of aqueous solutions under controllable temperature and carbon dioxide concentration conditions, solving the problems of ion contamination, uneven gas distribution, and low temperature control accuracy of traditional devices.

The utility model provides a material feeding structure and water bath type bubble cleaning machine relates to bubble cleaning machine technical field, the utility model discloses a material box, the one end of material box is provided with the through slot, the height of the one end of material box inner wall bottom end close to through slot is lower than the height of the one end of material box inner wall bottom end away from through slot, the inside of material box is provided with push mechanism, push mechanism includes the axle rod, the outer surface fixed connection of axle rod has the baffle, the utility model discloses a push mechanism is set up, through the material of multiple amount needing cleaning is added to the inside of material box, through the control electric push rod timing operation, make the through slot of material box inner wall one end timing opening, make the material of material box inside fall into the inside of cleaning machine one side through the through slot of material box one end, the material is automatically added when using the cleaning machine, the frequency of needing manual material adding is greatly reduced, the flexibility and practicality of bubble cleaning machine when using are improved, and the manual cost is reduced.

This utility model discloses a body oil viscosity testing device, including a U-shaped chute, a base, a steel ball, and a PLC controller. The bottom of the U-shaped chute is hinged to the base via a hinge shaft. A water bath heating chamber is fitted to the bottom of the U-shaped chute, and an electric heating rod is installed inside the water bath heating chamber. A release component for releasing the steel ball is installed at the upper end of the U-shaped chute, and a blocking component for blocking the steel ball is installed at the lower end of the U-shaped chute. An angle adjustment support is provided between the U-shaped chute and the base. This body oil viscosity testing device can use a steel ball of fixed size and weight, in conjunction with a layer of body oil applied to the U-shaped chute. The U-shaped chute can adjust the falling angle of the steel ball, and the temperature of the body oil layer can be adjusted via the water bath heating chamber. By measuring the falling time of the steel ball, and based on the falling time of the body oil layer at different tilt angles and temperatures, it can be used to test the viscosity of the body oil and evaluate its fluidity and lubricating properties.

The utility model relates to test equipment technical field, concretely relates to a kind of corrosion-resistant long-term constant-temperature heating water bath box. Including preheating water tank and water bath box, preheating water tank is connected with at least two water bath boxes by pipeline;The inside of preheating water tank and water bath box is provided with heating pipe, and the heating pipe is electrically connected with heater;The inner wall of preheating water tank and water bath box is equipped with anticorrosive layer, and the outer wall is equipped with insulating layer;Preheating water tank top is provided with sealing cover, and preheating water tank upper portion is communicated with water inlet pipe, and water inlet pipe one end is inserted into preheating water tank and is connected with float ball valve;The inside of water bath box is fixedly provided with test piece support plate, and water bath box outside is provided with support frame, and the liquid level sensor and temperature sensor located in the inside of water bath box are fixedly provided on the support frame. The utility model can effectively improve its corrosion resistance by increasing corrosion-resistant layer;Meanwhile, the water supplied to water bath box is preheated, to avoid the water supplied to destroy the high-temperature water environment in water bath box.

This invention relates to the field of heating system technology, and in particular to a water bath heating anti-icing system for CNG depressurization skid differential pressure power generation. The system includes a support frame and a gas delivery assembly. An outer cover support assembly is installed on the outside of the gas delivery assembly, and a de-icing assembly is installed inside the gas delivery assembly. A gas control assembly is installed inside the de-icing assembly, and an air supply assembly is installed at the lower end of the gas control assembly. A waste heat recovery assembly is installed at the lower end of the air supply assembly. A heater is fixedly connected to the upper end of the de-icing assembly, and a branch pipe is fixedly connected to the lower end of the de-icing assembly. The de-icing assembly includes an insulation box, an inlet pipe is fixedly connected to the inside of the insulation box, a second spherical shell is fixedly connected to one side of the inlet pipe, and a second stainless steel pipe is fixedly connected to the inside of the second spherical shell. In this invention, the device can reduce heat loss when heating the gas pipeline, ensuring that the natural gas in the gas pipeline is fully heated, guaranteeing the reliable operation of the gas transmission and distribution system, and providing qualified gas to downstream applications.

This utility model belongs to the field of evidence extraction technology and discloses a device for extracting combustion accelerants from combustion residues. It includes a base plate, on which a water bath heating chamber, a vacuum suction device, and a controller are mounted. A sealed chamber is installed inside the water bath heating chamber. A one-way air inlet valve is located at the end of an air inlet pipe on one side of the sealed chamber, and a one-way exhaust valve on the other side of the sealed chamber is connected to the vacuum suction device via a flexible hose. An activated carbon filter is installed in a filter assembly located in the middle of the flexible hose. Water bath heating ensures more uniform heating of the sealed chamber, which is beneficial for the decomposition of combustion accelerants in the combustion residues. The vacuum suction device reduces the air pressure inside the sealed chamber, lowers the volatilization and decomposition temperature of the combustion accelerant, and increases the extraction rate of the device. Under the action of the vacuum suction device, substances volatilized from the residues are discharged from the sealed chamber and adsorbed by the activated carbon filter, thereby collecting more combustion accelerant substances and making the extraction effect of the device more ideal.

This invention provides a waterless water bath device that can perform delicate heating and cooling, similar to conventional water bath treatments, without using hot water or metal blocks. [Solution] A water bath boiler characterized by comprising: a cylindrical wind tunnel with an open top that houses the outer curved surface of the bottom of a container (bowl) for storing ingredients to be stirred, and allows hot or cold air to be ventilated and circulated around the curved surface of the bottom of the bowl; a heat / cold air generating means that introduces outside air from an outside air inlet and heats or cools it to generate hot or cold air; an intake introduction pipe that guides the air output from the heat / cold air generating means to an intake port provided in the wind tunnel; and an exhaust outlet pipe that guides the exhaust discharged from an exhaust port provided in the wind tunnel to the heat / cold air generating means and recirculates the hot or cold air back into the wind tunnel.

The utility model discloses a centrifugal tube placing rack for water bath inactivation plasma, including the frame main body of integral cuboid, the frame main body includes bottom plate, top plate and four stand, four stand rectangular distribution between bottom plate and top plate, and the both ends of stand are fixedly connected with bottom plate and top plate respectively, the upper surface of bottom plate is equipped with a plurality of positioning recess for positioning the bottom part of centrifugal tube, and the elastic clamping plate of horizontal distribution is movably arranged between bottom plate and top plate, and the elastic clamping plate is provided with the limiting through -hole corresponding with each positioning recess, the adjacent two stand form the guide sliding slot along the vertical distribution, and the edge of elastic clamping plate is respectively with four stand side surface elastic abutment and elastic clamping plate and guide sliding slot sliding connection. The utility model improves the safety, adaptability of centrifugal tube placement in the process of plasma inactivation, can guarantee that plasma is heated evenly, has improved inactivation effect and efficiency.

This utility model relates to the field of water bath technology, specifically a water bath with a magnetic stirring structure. It includes a water bath body with a control mechanism, a mounting groove at the top, a heating chamber on the mounting groove, a heating cavity at the top, a heating tube on the heating cavity, a wiring port at the bottom, and a wiring connector on the mounting groove. The heating cavity and the water bath body are connected via a water receiving mechanism. A shelf is provided on the heating cavity. This structure, through the magnetic stirring mechanism, can actively stir the liquid inside the bottle, significantly improving the uniformity of liquid temperature. Through the coordinated structure of the adjusting shaft, bidirectional lead screw, inclined plate, and inclined groove, simply rotating the adjusting shaft to disengage the inclined plate from the inclined groove allows for easy removal of the top cover and lifting of the heating chamber, greatly simplifying maintenance and cleaning operations.

The utility model discloses a temperature control formula gasification mixing device, including water bath box, be provided with liquid inlet cavity and gas outlet cavity in water bath box, the connecting pipeline mechanism between liquid inlet cavity with gas outlet cavity, the pipeline mechanism includes a plurality of side by side arrangement's circuitous pipeline, every circuitous pipeline all is provided with mixing structure in each. The utility model aims at providing a temperature control formula gasification mixing device, and its purpose is to solve the problem of existing technology that liquefied gas gasification is not sufficient, mixes uneven and is influenced by the problem of greater environmental temperature. Through the integration temperature control system and mixing mechanism, the device ensures that liquefied gas obtains stable and sufficient heating in the gasification process, thereby realizing the uniform mixing of methane and butane. In addition, the introduction of temperature control system makes the gasification process no longer be restricted by environmental temperature fluctuation, and can maintain efficient and stable working condition under various conditions.

The utility model discloses a human body rapid cooling device, including movable carrier and be located in the ice making equipment of carrier internal space, inflatable bathtub and inflatable equipment, inflatable equipment is used to the inflatable bathtub is filled with gas, inflatable bathtub forms a cavity after filling with gas, which can make adult lie into, inflatable bathtub is used to the external clear water is received, the water temperature is kept at 10 DEG C after the fine ice of ice making equipment is added in clear water. The utility model discloses the combination use of built-in ice making equipment and inflatable bathtub, and the device can rapidly prepare the cold water bath environment containing fine ice grain, keep the water temperature at about 10 DEG C, immerse the human body in water, expose the face from the water surface, thereby realize the rapid cooling effect to human body, and the biggest advantage of this cooling mode is that cooling is rapid, and moreover convenient operation, cooling is uniform, thereby reach the purpose of the rapid treatment of heat stroke patient, save life.

The application belongs to the technical field of hydrometallurgical analysis and detection, and provides a hydrometallurgical crucible constant volume device and method integrating liquid adding and shaking, which comprises ground rail robots and rack boxes arranged side by side, the rack boxes are provided with cooling and buffering area mechanisms, drop shaking area mechanisms, water bath heating area mechanisms and peristaltic pump drop mechanisms; through cooperation of the ground rail robots, the cooling and buffering area mechanisms, the drop shaking area mechanisms, the water bath heating area mechanisms and the peristaltic pump drop mechanisms, high integration and seamless connection of the production process are realized; through cooperation of the guide rails, the sliding blocks, the racks and the gears in the drop shaking area mechanisms and the peristaltic pump drop mechanisms, accurate control of liquid adding and shaking can be realized, and meanwhile, the shaking effect is ensured through phased shaking.

This utility model relates to the technical field of sulfide acidification blowing devices, and proposes a sulfide acidification blowing device, including a body, a support frame, and a reaction bottle. A water bath is provided on the upper side of the body, and the support frame is located on the lower side of the water bath. The reaction bottle is placed on the support frame. The device also includes slide rails, clamping plates, transmission plates, a linkage mechanism, a locking plate, and a locking mechanism. Two slide rails are provided on both sides of the inner wall of the water bath, and two clamping plates are slidably connected to the slide rails. Two transmission plates are installed on the inner side of the clamping plates. Two sets of linkage mechanisms are provided on both sides of the inner wall of the water bath, and the linkage mechanisms are connected to the transmission plates. The linkage mechanisms are used for linkage between the two transmission plates. This technical solution addresses the problem in existing sulfide acidification blowing devices where the reaction bottle is easily tipped over by external forces, potentially affecting the normal operation of the device.

The utility model discloses a constant temperature water bath device and sample pre -treatment system, constant temperature water bath device includes water bath box and temperature control subassembly, and water bath box includes the box body of being equipped with inner chamber and the opening of a plurality of sleeves of setting upwards, and the inner chamber is used for injecting heat transfer agent, and the sleeve is worn in the inner chamber and is sealedly connected with the end face of box body, and the sleeve is used for setting sample tube and will heat transfer agent's temperature transfer to sample tube on, temperature control subassembly is connected on the box body and is used for through adjusting the temperature of inner chamber to make the liquid in sample tube keep constant temperature. The device can directly with manipulator system matching use carries out sample tube's taking and placing, improves the efficiency and degree of automation of sample storage and access, and can to sample tube high -efficient temperature control's while, make sample tube pass through the sleeve and the inner chamber isolation of box, avoid sample tube to cause the pollution of heat transfer agent, prevent sample tube cross -contamination and sample tube take out when the outer wall hang water. The device can integrate with other pre -treatment equipment, forms the complete sample pre -treatment system, and the scope of application is wide.

This utility model relates to the field of experimental equipment technology, specifically to a constant temperature shaking water bath with an adjustable grid support frame. It includes a main body of the constant temperature shaking water bath and a tank body disposed within the main body. A grid support frame is disposed within the tank body, with both sides of the grid support frame resting on the top surface of the main body. A perforated plate is fixedly installed at the bottom of the grid support frame. Two upper and lower grid limiting components are fixedly installed between the left and right side rods of the grid support frame. Each grid limiting component includes two side fixing strips fixedly installed on corresponding grid support frames. Multiple tension springs are detachably installed between the corresponding two side fixing strips, and the tension springs are covered by an outer elastic sleeve. The projections of the upper and lower tension springs are perpendicular to each other. This utility model has the advantage of adjustable grid, enabling it to adapt and support different experimental containers such as test tubes and beakers.

The utility model relates to a kind of constant temperature systems for epoxidation test application, including water bath, three-necked flask, agitator and cooling assembly;Water bath has a kettle body, the kettle body is a hollow container with upper end opening, still open a drain in the bottom side of kettle body, still set up a liquid level float ball in kettle body;The three-necked flask is placed in kettle body, the three-necked flask has a top and two side ports, one side port is reactant material feeding port, another side port is provided with a thermometer, the agitator has a stirring rod from the top of three-necked flask into the bottle body of three-necked flask, still set up stirring paddle on the top end of stirring rod;Cooling assembly includes a cooling nozzle, the bottom surface of cooling nozzle is opened with several spray ports.The constant temperature system in the utility model, through the intercoordination between water bath, cooling assembly and liquid level float ball, thermometer, to cooperate with controller interlock, the three-necked flask is heated or cooled, to realize the constant temperature of three-necked flask provides good foundation.

This invention provides a transmission-type experimental device with temperature control function, including a chamber, a rotating module, a water bath temperature control module, an optical fiber connection module, a display and interaction module, a control and processing module, and a power input module; it can simultaneously place multiple samples and control the temperature of multiple samples at the same time. Compared with other cuvette experimental devices, this device is more efficient and can also ensure that all samples are heated and cooled in the same environment.

The utility model relates to the field of constant temperature water bath, especially a glass constant temperature water bath box device, including heating groove, the both ends outer wall welding of heating groove has the adjusting pipe, and the heating groove is located at adjusting pipe and is equipped with the adjusting structure, the bottom inner wall of heating groove is installed with the partition, and the bottom outer wall center of heating groove is equipped with the balance subassembly, the bottom inner wall of heating groove is installed with the heater, the adjusting structure includes the mounting groove of opening in the adjusting pipe top, the adjusting groove of opening between heating groove and adjusting pipe, the electric push -rod of installing in the inner wall of mounting groove, the utility model starts the rotating motor and drives the stirring vane rotation, and the stirring vane makes the medium fully mixes, guarantees the temperature homogeneity of medium, inserts the test tube to the fixed hole of fixed plate, and the medium of fixed plate bottom carries out constant temperature to the test tube, is convenient to use, is convenient to fix the test tube, is convenient to constant temperature test tube or petri dish.

This invention relates to the field of reaction equipment technology, specifically to a fully automatic multifunctional auxiliary temperature-controlled reaction device and method; it includes a frame and a limiting connection assembly. The limiting connection assembly includes a heating chamber, a bottom chamber, a reaction cup, a mounting frame, bolts, a buffer pad, a first magnetic stir bar, a capping component, a lifting component, a magnetic stirring component, a temperature-controlled heating component, and a liquid adding component. The reaction cup is placed in the mounting frame, and the bolts are tightened to push the buffer pad to press against the outer wall of the reaction cup; the liquid adding component injects an appropriate amount of water bath liquid; the capping component covers the mouth of the reaction cup; the magnetic stirring component drives the first magnetic stir bar to rotate; the temperature-controlled heating component heats the water bath liquid; by firmly limiting the reaction cup in this way, the risk of tipping or overturning caused by the water bath liquid level overflowing the mouth of the cup is completely solved, ensuring the safety, uniformity, and stability of the water bath heating process.

This utility model discloses an automatic sample-feeding demulsification testing device, including a housing, a control system, a constant-temperature water bath, a transfer and positioning device, and a mixture stirring device. The constant-temperature water bath is equipped with a constant-temperature water bath, a heating rod, and a stirrer to provide a constant-temperature environment. The transfer and positioning device automatically positions the measuring cylinder via a sliding guide rail and an optical coupler. The mixture stirring device stirs the oil-water mixture using a paddle lift and a stirring motor. This device can automatically control the heating of the constant-temperature water bath, the positioning of the measuring cylinder, the stirring, and the testing process, sequentially performing demulsification tests on oil samples in multiple measuring cylinders. It is easy to operate, has high measurement accuracy, and effectively improves the automation level and work efficiency of demulsification testing.

The utility model discloses an automatic regulation's water bath type liquid nitrogen vaporizer, including water bath box, electric heater, steam heat exchange pipe, liquid nitrogen delivery pipe, liquid nitrogen heat exchange pipe, liquid nitrogen vaporization device, the liquid nitrogen vaporization device still include liquid nitrogen vaporization cylinder, steam connecting pipe, liquid nitrogen connecting pipe. The utility model's function is when electric heater or steam heating appears the breakdown, provides the buffer effect, reduces the influence of pressure fluctuation caused by the breakdown to pipeline element, cooperates production workshop control cabinet DCS control system, promotes the reliability and safety of device, reduces the influence of nitrogen to liquid nitrogen pipeline simultaneously, increases the heat exchange area of liquid nitrogen and hot water in water bath box, improves the vaporization efficiency of liquid nitrogen.