160results about "Pressure vessel components" patented technology

The invention provides an automatic chemical reaction monitoring device and method. An automatic chemical reaction monitoring device comprises a chemical reaction unit, a temperature and pressure monitoring unit, a data processing unit, a video recording control unit and a synchronous clock unit, data are collected in real time through a high-precision temperature and pressure sensor, and a dynamic threshold value calculation module generates a self-adaptive threshold value based on a reference value and data fluctuation characteristics; the temperature and pressure combined trigger module identifies the jump characteristics and triggers video recording, and the synchronous clock unit realizes millisecond-level time synchronization of multi-source data. The method comprises the steps of reagent injection, temperature and pressure monitoring, dynamic threshold calculation, jump identification triggering, data synchronous recording and the like. The embodiment shows that the device can accurately capture transient temperature and pressure changes of the chemical reaction, the anti-interference capacity is remarkably improved compared with traditional fixed threshold triggering, and the device is suitable for chemical reaction mechanism research and industrial process control needing to monitor temperature and pressure coupling changes in real time.

A multifunctional chemical synthesis reaction kettle belongs to the technical field of chemical synthesis equipment and comprises a reaction kettle body, a reaction kettle cover is arranged at the top end of the reaction kettle body, and a synergistic reaction unit is arranged in an inner cavity of the reaction kettle body; the collaborative reaction unit comprises a reaction bin, the center of the reaction bin and the center of the reaction kettle body are located on the same vertical line, a top plate is installed at the top end of an inner cavity of the reaction bin, and a stirring shaft is rotationally arranged in the center of the reaction bin in the vertical direction. Aiming at the limitation of a traditional chemical synthesis reaction kettle, a vacuum space and dynamic pressure change mechanism is adopted, periodic vacuum pressure change is realized through reciprocating lifting, the static flowing limitation of materials is effectively broken through, the reaction kettle deeply acts on the materials with different viscosities and densities, the problems of non-uniform mixing and dead angles are solved, and mechanical stirring is combined. Double synergistic mixing is achieved, the mixing efficiency and uniformity are remarkably improved, the reaction process is accelerated, and the product quality is guaranteed.

The invention relates to an interfacial polycondensation tubular reactor for preparing polycarbonate, which is characterized in that a U-shaped structure is adopted, a spiral turbulent flow device is arranged in a straight pipe section, and a high-viscosity melt is disturbed, laminar flow is eliminated and mixing is enhanced in an active or passive mode; a multi-stage independent temperature control module is arranged outside, so that the temperature of each reaction section is accurately regulated and controlled. The inlet, the outlet and the temperature control interface of the reactor adopt high-temperature-resistant and corrosion-resistant sealing design, and U-shaped modular flange connection is convenient for disassembly, assembly, cleaning and continuous expansion. The design solves the problems of non-uniform heat transfer and material residue of a traditional horizontal disc reactor, poor flow distribution of a tubular reactor and the like, and has the following advantages: the melt flow uniformity is improved, and local overheating and excessive polycondensation are avoided; the reaction efficiency and molecular weight distribution are optimized through segmented temperature control; the structure is compact without dead angles, the side reaction and inner wall corrosion risks are reduced, and the device is suitable for efficient continuous synthesis of polycarbonate.

The invention discloses an in-situ high-temperature and high-pressure visible reaction kettle capable of considering the action of gravity and application of the in-situ high-temperature and high-pressure visible reaction kettle, and belongs to the technical field of multiphase fluid mechanics experimental equipment. According to the in-situ high-temperature and high-pressure visible reaction kettle provided by the invention, in-situ simulation of a gravity vector under a non-rotation condition is realized by utilizing linkage and inclination angle adjustment (0-90 degrees) of the optical fiber coupling laser light source and the model clamping device; the polygon prism reflection system corrects light path offset in real time to form an orthogonalization collimation light path, and the observation view field stability and the data accuracy in the processes of oil-water separation, CO2 diffusion and the like in the high-temperature and high-pressure environment are ensured. Besides, through a split type hoop body and a rigid locking sealing structure, the alternating stress effect of rotating torque on a sealing interface is eliminated, the high-pressure dynamic sealing failure risk is remarkably reduced, meanwhile, the device size is simplified, interference of peripheral equipment is avoided, and the experiment safety and the space adaptability are improved.

The invention relates to the technical field of autoclave sampling, in particular to an accurate sampling device for an autoclave. The reaction kettle body is provided with a sampling structure for sealing and sampling an internally processed object; the sampling structure comprises an assembly shell for integrally fixing the reaction kettle body, and a pressure equalizing unit and a sampling unit which are connected with the reaction kettle body are arranged in the assembly shell; in the sampling process of the reaction kettle body, the internal air pressure is discharged to the sampling unit, and the internal pressure of the reaction kettle body and the atmospheric pressure are kept in a balanced state through the sampling unit. According to the invention, the pressure equalizing unit is matched with the sampling unit, so that the internal air pressure of the reaction kettle is balanced with the atmospheric pressure before sampling, and sample splashing or leakage caused by pressure difference is prevented; after sampling, the inside of the reaction kettle can be recovered to a normal processing pressure state, the subsequent processing flow is not influenced, and the continuity and stability of the reaction process are ensured.

The invention discloses an endogenous steam in-situ braking expansion device and a hard carbon material preparation method, and belongs to the technical field of biomass pretreatment, and the endogenous steam in-situ braking expansion device comprises a steam explosion reaction cabin and a water storage cabin which are communicated. An electric heating device is arranged outside the steam explosion reaction cabin, the steam explosion reaction cabin is communicated with the water storage cabin, and an inductance heating device is arranged outside the water storage cabin. The brake expansion device adopts a mode of combining electric heating and inductive heating, water vapor is generated in situ, and energy loss caused by vapor condensation is effectively reduced. Compared with a traditional steam explosion machine, the steam explosion machine has the advantages that energy consumption is effectively reduced, materials can be conveniently fed and discharged, and meanwhile the problem that steam is generated, enters the steam explosion reaction cabin, is condensed and drips on the materials, and consequently treatment is not uniform is solved.

The invention discloses a carbon dioxide ore-smelting gasification integrated collaborative device. The device comprises a carbon dioxide gasification unit used for converting liquid carbon dioxide into gaseous carbon dioxide; the carbon dioxide mineralization reaction unit is used for performing mineralization reaction on gaseous carbon dioxide; the hot air circulation system is connected between the mineralization reaction unit and the gasification unit and is used for transferring heat released by the mineralization reaction unit to the gasification unit; the cold air circulating system is connected between the gasification unit and the mineralization reaction unit and is used for returning cold air generated in the gasification process to the mineralization reaction unit for heating; and the ambient air introduction system is used for introducing ambient air into the air heating channel of the mineralization reaction unit, and the ambient air is used for heat exchange of the gasification unit after being heated. Through the synergistic effect of heat released by the mineralization reaction unit and the gasification unit, internal energy self-circulation is formed, efficient gasification and mineralization of carbon dioxide are achieved, energy consumption is reduced, and carbon emission is reduced.

The invention relates to the technical field of manufacturing of fusible polytetrafluoroethylene resin, in particular to a method for treating an unstable terminal group of fusible polytetrafluoroethylene, which is used for solving the problem that the unstable terminal group cannot be thoroughly treated in the prior art. The method comprises the following steps: heating fusible polytetrafluoroethylene resin to a molten state, after self-reaction, introducing high-purity fluorine-nitrogen mixed gas to carry out fluoridation reaction, and extracting impurities generated by the reaction to obtain unstable soluble polytetrafluoroethylene resin with a treated terminal group; according to the method, soluble polytetrafluoroethylene resin is heated to a molten state, and unstable terminal groups are thoroughly treated through self-reaction and fluorination reaction.

The invention discloses a diamond smoothing and patterning method and device based on catalytic agent energy field auxiliary etching, and belongs to the technical field of diamond smoothing and patterning, smoothing or patterning of diamond is achieved through the combined action of a catalytic agent and an energy field, and the contact part of the diamond and a catalytic agent disc is in contact with the catalytic agent disc under the catalytic action of the catalytic agent. Enabling the part, in contact with the catalyst, of the diamond to be subjected to etching reaction or graphitization reaction with oxygen atoms, and enabling the part, not in contact with the catalyst disc, not to be subjected to reaction, so that the diamond generates a structure corresponding to the surface of the catalyst disc; and the material removal rate of the diamond is remarkably improved, and damage to the surface and the subsurface of the diamond is avoided.

The invention relates to the technical field of silicon carbide synthesis, and discloses a synthesis method capable of improving solid-phase synthesis silicon carbide discharge rate and a silicon carbide synthesis furnace, the synthesis method comprises the following steps: crushing, screening, cleaning and drying a silicon carbide product block to obtain silicon carbide powder; the preparation method comprises the following steps: mixing silicon carbide powder, carbon powder, silicon powder and polytetrafluoroethylene powder by utilizing a high-energy ball milling technology and an ultrasonic-assisted mixing technology to obtain a mixed raw material; uniformly paving the mixed raw material in a graphite crucible, putting the graphite crucible into a silicon carbide synthesis furnace, and carrying out solid-phase synthesis of silicon carbide on the basis of optimal synthesis parameters output by a parameter optimization algorithm. According to the method, the production cost of solid-phase synthesis of silicon carbide can be effectively reduced, the yield of silicon carbide is remarkably improved, energy consumption and raw material waste in the production process are reduced, and the quality and purity of the silicon carbide product can be improved by accurately controlling synthesis parameters.

This invention discloses a high-pressure reactor with adjustable baffles, which includes a reactor body, several baffle components and stirring components. The baffle components are evenly spaced along the length of the reactor body and arranged inside the reactor body to divide the interior cavity of the reactor body into several isolated chambers. Each baffle component includes a fixed baffle, a movable baffle, and a lifting drive mechanism. The stirring components are respectively set in each of the isolated chambers. The beneficial effect of this invention is that during stirring, the first through-slot is staggered with the second through-slot to enhance the blocking effect on the material, thereby improving the stirring effect and the pressure leaching efficiency. After stirring is completed, the movable baffle is driven by the lifting drive mechanism to move and align the first through-slot with the second through-slot, allowing the material to quickly enter the next isolated chamber. Thus, this device can improve the blocking effect of the baffles on the material, enhance the stirring effect, and increase the pressure leaching efficiency without affecting production efficiency.

The artificial diamond synthesis system comprises a workbench, a cubic press is fixedly mounted at the top of the workbench, a cooling box is fixedly connected to one side of the workbench, and a discharging bearing plate is fixedly connected to one end of the cooling box; a clamping device for automatically feeding the synthetic diamond blocks is arranged on one side of the cubic press; a lifting device facilitating better feeding of the clamping device is arranged on the side, corresponding to the feeding port, of the top of the cooling box. And a translation device for pushing the synthetic diamond block to move is arranged in the cooling box, and a cooling device for reducing the temperature of the synthetic diamond block is arranged at the bottom of the cooling box. The problems that the diamond synthesis block is not easy to place and the temperature is high after synthesis are solved, and the synthesis automation of the artificial diamond is improved.

The present application relates to the technical field of diamond anvil cell pressurization, and particularly discloses a visible and controllable pressurization system based on a diamond anvil cell and a use method thereof, which solves the problem that the pressurization process of the diamond anvil cell cannot be observed and controlled accurately in the prior art. The system comprises a diamond anvil cell, the diamond anvil cell is installed on a fixing device, and a pressure detection assembly for obtaining the pressure in a sample cavity of the diamond anvil cell and a pressurization detection assembly for obtaining the pressurization state of the diamond anvil cell are arranged above the diamond anvil cell. The present application has the advantages that the pressurization process is visualized and controllable, the phenomena such as sample cavity deviation, deformation and liquid leakage of the diamond anvil cell are avoided, the uncontrollable problem of target pressure and pressurization step length is solved, and the experimental precision and success rate are improved.

This application provides a steam energy-saving system for an autoclave, including an automatic steam distribution and reversing device, a heat energy utilization device, a condensate drain device, and a control cabinet. The automatic steam distribution and reversing device includes an autoclave, an autoclave inlet steam distribution cylinder, and an autoclave reversing steam distribution cylinder. Both the autoclave inlet steam distribution cylinder and the autoclave reversing steam distribution cylinder are equipped with regulating valves, which are connected to the autoclave. The heat energy utilization device includes a heat exchanger, one end of which is connected to a main condensate pipe, and the other end is connected to a soft water station. The condensate drain device is located at the bottom of the autoclave and is connected to the heat exchanger via the main condensate pipe. The control cabinet is electrically connected to both the automatic steam distribution and reversing device and the condensate drain device. This application features a simpler structure, fully automated processing, reduced labor costs, higher safety, and greater energy efficiency and environmental friendliness, saving at least 15% of steam.

The application discloses a liquid level compensation method and device of a 1-hexene reactor and a control system for preparing 1-hexene. The liquid level compensation method comprises the following steps: obtaining a pressure value and a temperature value in the reactor; calculating the gaseous ethylene density in the reactor according to the pressure value and the temperature value in the reactor; obtaining a differential pressure value and a liquid phase substance density in the reactor, wherein the differential pressure value comprises a real-time differential pressure value and a zero-point differential pressure value when the reactor is empty; and calculating the liquid level value in the reactor after liquid level compensation according to the gaseous ethylene density in the reactor, the differential pressure value and the liquid phase substance density in the reactor. The liquid level compensation method can determine the accurate liquid level of the reactor, and then accurately control the preparation of 1-hexene according to the compensated liquid level.

The present invention relates to an assembly used for synthesizing a composite sheet with a cylindrical protrusion at the tail and a synthesis method thereof; the assembly comprises a metal cup A, a metal cup B and an auxiliary ring; diamond micropowder is mixed with a binder and is arranged at the bottom of the metal cup A; a cemented carbide substrate is pressed on top of the diamond micropowder, the bottom is a large cylinder, and the top is a small cylinder coaxially connected to the large cylinder; the auxiliary ring is in the shape of a gasket corresponding to the small cylinder and is sleeved outside the small cylinder; the metal cup B is buckled and mounted on the top of the small cylinder; the auxiliary ring is made of a high-temperature and high-pressure resistant material. The steps of the synthesis method are: 1. preparing raw materials, 2. high-temperature and high-pressure synthesis, and 3. mechanical processing; the present invention uses the auxiliary ring to support the metal cup A during high-temperature and high-pressure synthesis to ensure the formation of the composite sheet; the metal cup A ensures that the diamond powder is formed and connected to the cemented carbide bottom; during mechanical processing, the auxiliary ring can reduce the cutting difficulty of the cylindrical protrusion, reduce the cutting processing cost of the cylindrical protrusion, and improve processing efficiency.

The present invention belongs to the field of gemstone optimization technology, and particularly relates to a kind of Shandong sapphire optimization treatment method. Comprise the following process steps: first Shandong sapphire sample is loaded: sapphire sample is laid in cubic pressure chamber, pressure chamber is squeezed with hydraulic press, compression volume, finally pressure chamber is sealed with graphite sheet, and sealing is standby;Then six-sided top press is used to process gemstone sample: pressure chamber is installed to top press center, temperature and pressure curve is set: temperature is made to reach 1600-1900 DEG C within 2h, pressure reaches 5-7GPa, and is kept warm for 15h under these conditions;Temperature is reduced to room temperature within 2h, and pressure is reduced to atmospheric pressure;Take out sample, sample is cleaned. The present invention uses high temperature and high pressure treatment method to process Shandong sapphire, accelerates sapphire to change, improves its own color and transparency, and Shandong sapphire is improved from black blue to purple blue, and obtains relatively good improvement effect.

The invention relates to the technical field of polyglycolic acid processing, and provides a degradation method and a preparation device of a polymer for well drilling leakage stoppage, and the degradation method comprises the following steps: preparation, pressurization, heating, regulation and control, and sampling inspection. The preparation process comprises the following steps: weighing 3 parts of 15g of A particles by using an electronic scale, and the sampling inspection process comprises the following steps: 8 hours later, adjusting a control cabinet, sequentially cooling and depressurizing a reaction kettle, opening the reaction kettle after safety is confirmed, closing the reaction kettle again, and repeating the steps of pressurizing, heating and regulating. According to the technical scheme, the problem that in the prior art, whether the degradability of a polyglycolic acid (PGA) material exists or not needs to be judged by means of observation, analysis and the like is solved, a degradable polyglycolic acid (PGA) particle sample is placed in a beaker, clear water is added, the beaker and the beaker are placed in a hot box, the mixture is heated for a period of time at different given temperatures, then the surface morphological change of the sample is observed, and the detection result is accurate. The thermal stability of the material at different temperatures can be evaluated according to the color change, the surface structure damage and the like.

The present invention relates to the technical field of supercritical water oxidation reaction equipment, specifically a supercritical water oxidation slag discharge system for radioactive organic waste, which includes a supercritical water oxidizer, a slag discharge valve pipe II for discharging solid-liquid waste, and a slag discharge valve pipe I for discharging gas waste; it further includes: an interconnection pipe, horizontally and threadedly installed at one end of the slag discharge valve pipe I, and an air extraction connection port is formed on the top wall of the upper shell; a refrigeration sheet, arranged inside the interconnection pipe below the air extraction connection port, for condensing the flowing hot gas; a sponge, closely arranged inside the interconnection pipe between the scraping ring and the air extraction connection port, for adsorbing the hot gas waste flowing through the interconnection pipe to the air extraction connection port. Through the setting of the above structure, the sponge in the present invention can adsorb and dry the flowing hot steam, so that the salted water vapor is absorbed by the sponge, and the relatively dry gas waste is discharged and treated through the air extraction connection port, reducing the salted hot steam being transported to the gas treatment equipment.

The application discloses a gas parameter adjusting method for a reaction kettle and belongs to the field of high-temperature and high-pressure equipment control. The gas parameter adjusting method for the reaction kettle adjusts and controls the gas temperature and pressure in the control kettle and the reaction kettle through adjusting the gas booster and the heating belt, realizes two-stage accurate regulation and control of the gas temperature, pressure, concentration and other parameters before and after entering the kettle and real-time dynamic supplement, guarantees high consistency between the test working condition in the kettle and the field working condition; on the other hand, the application solves the problem that the gas composition and the proportioning accuracy in the reaction kettle are reduced due to the fact that the mixed gas formed by the reaction medium solution volatilization and the reaction gas under the simulated actual working condition cannot be realized in real time and accurately during the reaction gas proportioning process, thereby guaranteeing the high consistency between the test environment in the reaction kettle and the actual working condition and the reliability of the test result, and significantly improving the safety.

The invention discloses an energy-saving and consumption-reducing system and method based on an alkoxylation device.The system comprises a pretreatment kettle, the discharging end of the bottom of the pretreatment kettle is communicated with the top of the pretreatment kettle sequentially through a pretreatment kettle outer circulating pump and a pretreatment kettle outer circulating heater, and the discharging end of the pretreatment kettle outer circulating pump is further communicated with a reaction kettle; the bottom discharge end of the reaction kettle is sequentially communicated with a reaction kettle circulating pump and a reaction kettle circulating heat exchanger, the discharge end of the reaction kettle circulating heat exchanger is respectively communicated with the reaction kettle and a gas-liquid mixer, and the discharge end of the reaction kettle circulating heat exchanger is also communicated with a reaction heat recovery system; the discharging end of the reaction kettle circulating pump is also communicated with the feeding end of a post-treatment kettle, and the bottom of the post-treatment kettle is provided with a discharging end; the method comprises the steps of pretreatment, alkylation reaction, aftertreatment and tail gas washing. According to the scheme, the energy-saving and consumption-reducing effects are remarkable.

The invention discloses a mineralization kettle external circulation distribution pipeline which comprises a main air inlet pipeline connected with an air inlet of a pressure-bearing fan and a main air outlet pipeline connected with an air outlet of the pressure-bearing fan, first-stage balance branch pipes are connected to the lower portion of the main air inlet pipeline or the main air outlet pipeline, and second-stage balance branch pipes are connected to the two ends of each first-stage balance branch pipe. The two ends of the second-stage balance branch pipe are connected with third-stage balance branch pipes, and the third-stage balance branch pipes are connected to a carbon dioxide diffuser in the mineralization kettle. The carbon dioxide diffusers are arranged in the mineralization kettle, so that the pressure, the flow speed and the flow of carbon dioxide in the multiple carbon dioxide diffusers in the mineralization kettle are equal, and the carbon dioxide uniformly circulates on the surface of the mineral substance at a certain speed in a turbulent flow manner. By arranging the main pipeline, the balance branch pipe and the carbon dioxide diffuser, uniform circulating flow of carbon dioxide in the mineralization kettle is realized, and rapid mass transfer homogenization of mineralization reaction is realized.

The invention relates to the technical field of heating furnaces, in particular to a heating device and method for a pressure reaction kettle. The heating device comprises a furnace body, wherein the furnace body comprises an upper furnace shell, a lower furnace shell and a heat insulation ring; a bearing ring is installed on the upper portion of the upper furnace shell, a top cover is installed on the top of the upper furnace shell, and a bottom plate is installed at the bottom of the lower furnace shell. The heat insulation ring is clamped between the upper furnace shell and the lower furnace shell; a plurality of heating units are arranged on the inner side of the upper furnace shell and the inner side of the lower furnace shell; first adjusting screw rods in one-to-one correspondence with the heating units are in threaded connection in the upper furnace shell; second adjusting screw rods in one-to-one correspondence with the heating units are in threaded connection in the lower furnace shell; and temperature monitoring assemblies are mounted in the upper furnace shell and the lower furnace shell. The heating device can uniformly heat the pressure reaction kettle in the axial direction and the circumferential direction; under the condition that a certain heating unit is suddenly damaged, the uniform axial heating effect can be kept by adjusting the height positions of other heating units.

The present application relates to heating furnace technical field, specifically to a kind of heating device and method for pressure reaction kettle.The heating device includes furnace body, furnace body is on furnace shell, lower furnace shell and heat insulation ring;Ring is installed on the upper furnace shell upper portion, top cover is installed on the top of upper furnace shell, bottom plate is installed on the bottom of lower furnace shell;Heat insulation ring is clamped between upper furnace shell and lower furnace shell;Multiple heating units are provided in the inner side of upper furnace shell and lower furnace shell;First adjusting screw is screw-connected with heating unit one-to-one in the inner side of upper furnace shell;Second adjusting screw is screw-connected with heating unit one-to-one in the inner side of lower furnace shell;Temperature monitoring component is installed in the inner side of upper furnace shell and lower furnace shell.The heating device can be heated to pressure reaction kettle in axial and circumferential direction evenly;In the case where a certain heating unit is suddenly damaged, the height position of other heating units is adjusted to maintain uniform axial heating effect.

The present invention relates to a reactor (1) comprising: a plate heat exchanger (2) having a plurality of adjacent plates (3) between which gap channels (4, 5) are defined, said gap channels (4, 5) being divided into a plurality of fluidically interconnected primary gap channels (4) and a plurality of fluidically interconnected secondary gap channels (5), wherein a catalyst material (6) for an exothermic reaction is provided in at least one of the primary gap channels (4), and wherein primary fluid supply means (7) for supplying a primary fluid to the primary gap channels (4) and secondary fluid supply means (10) for supplying a secondary fluid to the secondary gap channels (5) are provided; a pressure vessel (18) that encloses the plate heat exchanger (2); and pressure fluid supply means (19) that are designed to supply a pressure fluid to the pressure vessel (18).

The present invention relates to the technical field of tetrafluoroethane preparation, and provides a tetrafluoroethane preparation reaction kettle, which comprises: a kettle body, which is provided with a reaction chamber, and the inner wall of the kettle body is provided with a fluorine corrosion resistant coating; the kettle body is of a double-layer structure and comprises a high-strength metal layer on the inner layer and a heat preservation and insulation layer on the outer layer, the high-strength metal layer on the inner layer is made of a titanium alloy material, the heat preservation and insulation layer on the outer layer is an aerogel felt layer, and a plurality of supporting columns are arranged between the inner layer and the outer layer. According to the reaction kettle, the fluorine corrosion resistant coating, the double-layer heat preservation and insulation structure, the optimally designed stirring device, accurate temperature and pressure control and uniform gas distribution are adopted, so that the corrosion resistance, the heat preservation and insulation effect, the stirring effect, the temperature and pressure control precision and the gas distribution uniformity of the reaction kettle are remarkably improved. Through the improvements, the reaction efficiency and the product quality of tetrafluoroethane preparation are improved, the safety of the reaction kettle is enhanced, and the service life of the reaction kettle is prolonged.

The invention discloses a reactant mixing device in an external magnetic control closed reaction kettle, and relates to the technical field of reactant mixing equipment. Comprising a reaction kettle upper cover and a reaction kettle main body, the interior of the reaction kettle main body is rotatably connected with a solid tipping bucket, the side wall, away from the solid tipping bucket, of the reaction kettle main body is provided with an electrified magnetic attraction telescopic assembly, and the electrified magnetic attraction telescopic assembly is used for preventing the solid tipping bucket from overturning. According to the device, magnetic driving is utilized, after the reaction kettle is sealed, alloy component metal and acid are mixed and react in the reaction kettle to produce high-pressure gas, gas reactants of the device cannot leak, and the test result is more accurate.

The invention discloses a multifunctional vacuum material neutralization tank which comprises a tank body, a spherical seal head is arranged at the bottom end of the tank body, and a downward discharge hole is formed in the center of the spherical seal head; the stirring device comprises a driving motor, a stirring shaft and a stirring paddle mounted on the stirring shaft, the stirring shaft is transversely mounted in the tank body through a sealing assembly, the driving motor is mounted on one side of the tank body and is in driving connection with the stirring shaft through a reduction gear set, and the stirring paddle is mounted on the stirring shaft in the tank body. The stirring paddles are arranged along the circumferential direction of the stirring shaft and are in arc-shaped fit with the inner wall of the spherical sealing head; the spraying device is arranged in the tank body, is positioned above the stirring device, and comprises a plurality of nozzles which are arranged in rows and are provided with downward spouts; the cleaning device is arranged at the top of the inner cavity of the tank body and comprises a rotary cleaning ball head. The vacuum tank has the beneficial effects that the environment in the tank can reach a more ideal vacuum state and a more ideal sealing effect; and the materials are prevented from blocking the discharging hole, and the tank body can be automatically cleaned.

The invention belongs to the technical field of polyurethane synthesis, and particularly relates to a synthesis method and a synthesis device of solution type polyurethane. The device comprises a vacuum reaction kettle; the first vacuum material barrel and the second vacuum material barrel are respectively communicated with the vacuum reaction kettle; and the dry nitrogen supply and discharge device is used for continuously inputting nitrogen into the vacuum reaction kettle in the reaction process and simultaneously discharging mixed gas formed in the vacuum reaction kettle. When the device is used for synthesizing solution type polyurethane, the influence of by-product gas, oxygen and moisture in a polymerization reaction on reactants can be reduced, and the labor cost caused by frequent sampling detection in a polyurethane reaction process is reduced.

The invention relates to the technical field of cubic presses, and discloses a cubic press holding-up hammer protection device which comprises a hydraulic press, a piston device is fixedly connected to the middle of the front side of the hydraulic press, a holding-up block is fixedly connected to the front side of the piston device, and a fixing plate is arranged on the left side of the hydraulic press. The rear side of the top of the fixing plate is fixedly connected with a refrigerating fluid storage tank, the front side of the top of the fixing plate is fixedly connected with a three-way circulating pump, the front end of the right side of the three-way circulating pump communicates with a water inlet hose, and the front side of the three-way circulating pump communicates with a water outlet hose; the top end of the water inlet hose and the top end of the water outlet hose communicate with the same converter and are fixedly connected to the middle of the rear side of a piston device. In the invention, the effect of quickly cooling the top block is realized, the temperature of the top block in the working process is effectively reduced, the service life of the top block is prolonged, the damage caused by high temperature is avoided, and the stability of equipment in use is improved.