151results about "Pressure/vacuum vessels" patented technology

An object is to provide a drying method for continuous processing under reduced pressure, which affords high drying efficiency by bringing about an ideal fluidized state of a process product, the method including, with a median diameter (D50) of a granular starting material ranging from 1 µm to 1000 µm and under reduced pressure at an absolute pressure of 4 to 30, performing a drying treatment by fluidizing the granular starting material, through heating with a heating medium at a temperature 15 to 120°C higher than the boiling point of a solvent in the granular starting material under the above reduced pressure.

The invention discloses polyamide acid, a preparation device and method thereof, polyimide and a preparation method thereof. The polyamide acid and the preparation device thereof comprise a first reactor, a second reactor and a screw reactor, the first reactor and the second reactor are connected in parallel, and the first reactor and the second reactor are used for prepolymerization reaction; a first pump body is arranged on a pipeline of a prepolymer feeding hole of the first reactor and the screw reactor, a second pump body is arranged on a pipeline of a prepolymer feeding hole of the second reactor and the screw reactor, and the first pump body and the second pump body are used for controlling prepolymers formed in the first reactor and the second reactor to be introduced into the screw reactor; the screw reactor is provided with a vacuumizing unit, and the vacuumizing unit is used for forming vacuum in the screw reactor. According to the preparation device and the preparation method, the prepared polyimide has excellent mechanical property, thermal property and yield.

The utility model discloses vacuum extraction equipment for a reaction kettle, and particularly relates to the technical field of defoaming agent production equipment, the vacuum extraction equipment comprises a tank body for processing a defoaming agent, and an adjusting piece for preventing the defoaming agent from being solidified is arranged in the tank body; the adjusting part comprises a hollow column arranged in the tank body, two heating rods distributed at intervals are installed at the top of an inner cavity of the hollow column, and a plurality of heat conduction pipes distributed at intervals are fixedly communicated with the two sides of the hollow column; the top end of the hollow column penetrates through the tank body and extends to the top of the tank body. Liquid is heated through the heating rod, heat is conducted to a defoaming agent in the tank body through the hollow column and the heat conduction pipe, meanwhile, the servo motor drives the driving gear to rotate, the driving gear drives the hollow column to rotate through the meshed driven gear, and therefore the defoaming agent can be stirred through the heat conduction pipe on the hollow column, the defoaming agent can be prevented from being solidified, and the defoaming agent can be prevented from being damaged. And heat on the heat conduction pipe and the hollow column can be in full contact with the defoaming agent, so that the heat transfer efficiency is improved.

The invention relates to the technical field of sealing, and provides a cover body assembly and a supercritical water oxidation reactor, the cover body assembly comprises a main body, a cover body and a fastening structure, the main body comprises a mounting opening and a first lip part, the first lip part surrounds the periphery of the mounting opening, and the first lip part is provided with a first sealing surface; the cover body is arranged at one end of the main body in the axial direction and comprises a second lip part, the cover body seals the mounting opening, the second lip part is provided with a second sealing face, the first sealing face and the second sealing face are opposite in the axial direction and abut against each other in a sealing mode, and the periphery of the second lip part and the periphery of the first lip part are welded to form an annular welding part; the fastening structure connects the main body and the cover body. Under the action of axial pressing force of the fastening structure, the first sealing face abuts against the second sealing face in a sealed mode. The annular welding part is arranged on the periphery of the first lip part and the periphery of the second lip part in a surrounding mode, and the sealing performance is basically not attenuated through cooperation of multiple seals and the fastening structure.

The utility model relates to the field of methanol cracking production, in particular to a multistage evacuator for methanol cracking hydrogen production, which comprises a mounting base, a hydrogen production and impurity removal tank fixedly mounted on the left side of the upper end of the mounting base, a pre-extraction communicating pipe groove fixedly connected to the upper side of the surface of the hydrogen production and impurity removal tank, and a pre-extraction mechanical pump fixedly connected to the right end of the pre-extraction communicating pipe groove. The lower side of the surface of the hydrogen production and impurity removal tank is fixedly connected with a fine extraction communicating pipe groove, the right end of the fine extraction communicating pipe groove is fixedly connected with a fine extraction molecular pump, the upper end of the hydrogen production and impurity removal tank is fixedly provided with an air pressure sensor, and the right side of the upper end of the mounting base is fixedly provided with a mounting frame; according to the utility model, the pre-pumping mechanical pump is matched with the pre-pumping communicating pipe to carry out pre-pumping evacuation operation, and then the fine-pumping molecular pump is matched with the fine-pumping communicating pipe groove to carry out fine-pumping evacuation operation, so that objects in the vacuum chamber can be efficiently vacuumized, the vacuum degree is higher, and efficient reaction and product purity are ensured.

The utility model discloses a reaction kettle connected with a negative pressure vacuum pump, which relates to the technical field of reaction kettles and is characterized in that a negative pressure vacuum pipe is mounted at the top of the reaction kettle in a matched manner; one end, far away from the reaction kettle, of the negative-pressure vacuum pipe extends into the vacuum tank; a sampling assembly is cooperatively mounted at the bottom of the reaction kettle; the sampling assembly comprises a pipe body; a material taking pipe is installed in the pipe body in a matched mode. In the material reaction process, a stepping motor drives a first bevel gear to rotate, a second bevel gear is arranged on one side of the first bevel gear, and when the first bevel gear is meshed with the second bevel gear, a straight gear coaxially arranged on the second bevel gear is meshed with teeth arranged on the material taking pipe, so that the teeth drive the sampling pipe to move along the inner wall of the pipe body; the end, provided with the through hole, of the material taking pipe moves into the reaction kettle, materials enter the material taking pipe through the through hole and are conveyed into the collecting device through the material taking pipe, the sampling detection effect is achieved, and the reaction quality and efficiency of the materials in the reaction kettle are improved.

The application belongs to the field of lithium hexafluorophosphate production, in particular to a vacuum reaction furnace for lithium hexafluorophosphate production, which comprises a horizontal vacuum furnace, the inside of the horizontal vacuum furnace is provided with a rotatable inner stirring frame, the inner stirring frame is attached to the inner wall of the horizontal vacuum furnace, and a feeding door for feeding and discharging is installed on the top of the horizontal vacuum furnace. Through such a setting, an integrated preparation process of lithium hexafluorophosphate synthesis and purification reaction is realized, air and moisture pollution caused by raw material transfer during the synthesis and purification reaction process is eliminated, the post-processing process is increased, the quality is reduced, and other problems are solved. At the same time, the switchable negative pressure absorption system makes the treatment of the purification and synthesis stages adapt smoothly, realizes the possibility of common operation, reduces the transfer, post-processing and other process steps, and improves the production efficiency.

The utility model relates to the technical field of reduced pressure drying reaction kettles, in particular to a reduced pressure drying reaction kettle with a cooling function, which comprises a reaction kettle, and the top end of the reaction kettle is communicated with a vacuum pipe and a pressure release valve; the cooling mechanism is arranged in the reaction kettle; wherein the cooling mechanism comprises a rotating frame rotationally connected to the inner wall of the reaction kettle; according to the device, through the rotating frame, the material pushing frame, the liquid inlet pipe and the cooling pipeline, raw materials close to the inner wall of the reaction kettle are pushed to the surface of the cooling pipeline, and the rotating cooling pipeline conveys, throws away and cools the raw materials in the middle of the reaction kettle; by means of the mode, the contact area between the raw materials and the material pushing frame and the contact area between the raw materials and the cooling pipeline are increased, so that the raw materials in the reaction kettle are evenly cooled, and the pharmaceutical production quality is improved.

The utility model belongs to the technical field of chemical reaction devices, and particularly discloses a high-temperature and high-pressure reaction kettle with a stirring function, which comprises a kettle body, a pneumatic stirring mechanism, an air inlet pipeline, a light phase discharge pipeline and a pressure measuring device, the stirring connecting rod penetrates through the kettle body, one end of the stirring connecting rod extends out of the kettle body and is connected with the pneumatic motor, the stirring blade is arranged on the stirring connecting rod in the kettle body, and a sealing structure is arranged at the bottom of the pneumatic motor. According to the reaction kettle, the pneumatic motor is used for replacing mechanical stirring, stepless speed change can be achieved, the stirring speed is relatively stable through pressure regulation, the sealing cooling sleeve and the sealing flange plate which are integrally formed with the pneumatic motor are adopted, and the sealing graphite ring is arranged in the sealing cooling sleeve; the octagonal gasket is additionally arranged between the sealing flange plate and the fixed flange plate at the top of the kettle body for sealing and is fastened through the bolt, so that the pressure resistance of the reaction kettle is improved.

The utility model discloses: a kind of water pressure autoclave, comprising: the reaction kettle body for installation, the mounting cover stably installed on the upper end of reaction kettle body;Further comprising: the mounting cover is provided with uniform stirring mechanism, wherein stirring mechanism includes first gear, second gear, first stirring rod, third gear and second stirring rod, the left side of first gear is connected with second gear, and the inside of second gear is connected with first stirring rod, and the right side of first gear is connected with third gear, and the inside of third gear is connected with second stirring rod;Second sealing ring, the lower end of second sealing ring is provided with sealing structure.The utility model relates to high-pressure kettle technical field, the water pressure autoclave, it is convenient to mix inside material of water pressure autoclave sufficiently evenly, it is convenient to seal protection to water pressure autoclave, ensure that inside material can effectively react, it is convenient to heat evenly to inside reaction material of water pressure autoclave.

The present application relates to the technical field of sealing of superhard material synthesis, and particularly relates to a main cylinder sealing structure of a cubic press, which comprises a main shell, a sealing cylinder coaxially fixed in the main shell, a piston in sliding connection with the sealing cylinder, an oil pressure system for driving the piston to slide along the central axis direction of the sealing cylinder, a sealing assembly and a impurity removing assembly. The impurity removing assembly comprises a first impurity removing unit and a second impurity removing unit. The oil pressure system has a first stroke and a second stroke when driving the piston to slide. When the piston is in the first stroke, the first impurity removing unit is used to clean impurities through a negative pressure effect. When the piston is in the second stroke, the second impurity removing unit is used to clean impurities through a negative pressure effect. The sealing assembly is used to prevent the hydraulic oil in the first impurity removing unit and the second impurity removing unit from exchanging with each other. Thus, the impurities are removed, and the sealing cylinder is effectively prevented from being damaged by the impurities.

The invention relates to an inlet transition chamber for a vacuum chamber (4) of a mobile strip (2) vacuum treatment installation, of the type comprising at least one liquid reservoir (5) containing a liquid (11), the reservoir comprising an upstream compartment (6) and a downstream compartment (7), the upstream compartment (6) and the downstream compartment (7) being separated by a vertical partition (8) leaving an unobstructed passage (9) between the two compartments at the lower part of the reservoir, a guide roller (10) for guiding the strip being arranged in the passage (9). The transition chamber comprises a downstream evacuation chamber (13) extending from the downstream compartment (7) and connected to an evacuation device (15), liquid extraction means (17) being arranged in the downstream evacuation chamber (13), wherein the downstream evacuation chamber comprises an outlet slit (14) for the strip, and wherein the transition chamber comprises means (12) for cooling the liquid (11) contained in the reservoir.

The utility model relates to the field of chemical containers, and discloses a high-sealing-performance anti-explosion high-pressure kettle which comprises a kettle body, a sealing cover and a stirring device, a gas gathering tank is arranged on one side of the kettle body, the top of the sealing cover is communicated with a gas discharging pipe and a gas inlet pipe, and a breather pipe is communicated between the gas discharging pipe and the gas gathering tank and between the gas inlet pipe and the gas gathering tank; an automatic air outlet assembly is arranged in the air leakage pipe and sequentially comprises a fixing base, an elastic piece connected to the bottom of the fixing base, a non-return ball connected to the bottom of the elastic piece and a plugging ring used for bearing the non-return ball from top to bottom, a plurality of vertical through holes are formed in the fixing base in a penetrating mode, and the non-return ball is matched with the plugging ring in an inserted mode. And an automatic air inlet assembly is correspondingly arranged in the air inlet pipe. The high-pressure kettle has the effect of improving the safety in the using process of the high-pressure kettle.

The utility model relates to the technical field of sea grass processing, and discloses a sea grass alkali treatment device which comprises a treatment tank, a pressure intensity adjusting part and a mounting frame, the treatment tank is used for containing sea grass and alkali liquor and comprises a tank body and a tank cover movably mounted on the tank body, and a balance hole is formed in the tank body; the pressure intensity adjusting part comprises a driving set and an output set, the driving set transmits power to the output set, and the output set drives the tank cover to move in the axial direction of the tank body so as to change the pressure intensity in the tank. According to the utility model, the pressure intensity adjusting part is arranged, and high pressure and low pressure in the tank are alternately changed, so that the alkali treatment speed of sea grass is accelerated; meanwhile, continuous temperature rise caused by continuous high pressure in the tank is avoided; the output group is arranged, so that high-pressure and low-pressure switching in the tank can be continuously and stably carried out; the tank body is arranged to be the treatment tank body and the compression tank body, so that the tank cover achieves the same air pressure adjusting effect at a shorter displacement distance, and the volume occupied by the output group during working can be reduced.

The invention discloses a high-purity quartz sand purification device based on a supercritical process, and relates to the technical field of quartz sand purification. The reaction kettle comprises a lower reaction kettle body and an upper reaction kettle body, supporting bases used in cooperation are fixedly installed at the lower end of the lower reaction kettle body, the supporting bases are distributed in an array mode, the upper end of the upper reaction kettle body communicates with feeding pipelines used in cooperation, and the feeding pipelines are symmetrically distributed; by arranging and using the disconnecting mechanism, convenience is provided for insertion and separation of the limiting guide blocks and the limiting guide grooves, so that convenience is provided for rotation and reset of the four limiting pressing plates, convenience is provided for synchronous rotation of the four disconnecting screw cylinders, convenience is provided for synchronous downward pushing of the four limiting pressing plates, and the practicability is high. Therefore, convenience is provided for stable and uniform pressing of the upper reaction kettle body, convenience is provided for convenient and stable butt joint installation of the lower reaction kettle body and the upper reaction kettle body, and later disassembly is facilitated.

The invention relates to a coating apparatus comprising a vacuum chamber (1) and a workpiece chamber (2), each of the chambers (1, 2) having an inner volume and a connection opening (3, 4) over which the vacuum chamber (1) and the workpiece chamber (2) are connected or connectable to each other, wherein the vacuum chamber (1) is provided with a vacuum device (5) adapted to generate a vacuum within the vacuum chamber (1) and the workpiece chamber (2), wherein a coating device (6) is adapted to provide a workpiece placed in the workpiece chamber (2) with a coating, wherein the vacuum chamber (1) is further provided with an interface (7), wherein the interface (7) can be brought into at least an open position and a closed position, and wherein in its closed position, the interface (7) separates the inner volume of the vacuum chamber (1) into two parts (8, 9), in particular in a vacuum-tight manner. The invention further relates to a coating system and a coating method.

According to an embodiment of the present disclosure, mass production is possible and production time may be reduced, thus increasing yield. Furthermore, a method and apparatus for manufacturing a nanomaterial, which can manufacture a high-purity nanomaterial are disclosed.

The application provides a high-purity germanium detector molecular sieve activation device and activation method under vacuum sealing conditions, and is used for solving the technical problems of low efficiency, complicated operation and difficult process guarantee of the existing molecular sieve activation method, unstable adsorption performance and quality of the molecular sieve, poor adsorption effect and poor economy. The high-purity germanium detector molecular sieve activation device under vacuum sealing conditions comprises an automatic control unit formed by an alternating current contactor, a temperature controller and a starting button, and the automatic control unit is matched with a temperature sensor and a heating pipe respectively, so that the molecular sieve activation device has a temperature monitoring function, and automatic stopping and automatic heating of the molecular sieve heating activation are realized through temperature monitoring. The application has the advantages of simple structure, convenient control, molecular sieve activation and vacuum preservation functions, cost saving, activation efficiency improvement, high vacuum high-temperature baking and degassing functions of the vacuum assembly, and the like.

The utility model provides an oil lubrication double-activity meshing high-temperature-resistant corrosion-resistant air stirring shaft seat system, belongs to the technical field of high-temperature fire-tracing composite materials, and solves the problems that oil lubrication of the shaft seat system is easy to leak, and the shaft seat system is easy to damage by a high-corrosion medium generated during violent reaction. The lubricating double-activity meshing high-temperature-resistant corrosion-resistant air stirring shaft seat system comprises a main driving shaft, deep groove ball bearings are fixed to the left end and the right end of the outer wall of the main driving shaft correspondingly, a main bearing seat is fixed to the deep groove ball bearings, a bearing clamping spring position is formed in the inner wall of the main bearing seat, and a heavy forging flange is fixed to the outer wall of the main bearing seat; a circulating cooling water jacket is fixed to the heavy forging flange, and a heat conduction oil system pipeline and a cooling water circulating system pipeline are fixed to the upper end and the lower end of the outer wall of the circulating cooling water jacket respectively. The utility model has the advantages that the temperature, pressure and humidity in the stirring system are kept, and the lubrication of the self shaft seat system also needs to control the sealing to prevent leakage.

The utility model relates to the technical field of adhesive preparation, and discloses a safe preparation device for a solvent-free two-component polyurethane adhesive, which comprises a storage tank, a feeding port arranged on the upper wall of the storage tank, a discharging header pipe arranged on the lower wall of the storage tank, and a master control valve arranged on the discharging header pipe; a plurality of mixing tanks are arranged above the storage tank, stirring mixers are arranged in the mixing tanks, feeding branch pipes and discharging branch pipes are arranged on the upper walls and the lower walls of the mixing tanks respectively, the discharging branch pipes are communicated with the feeding ports of the storage tanks, branch control valves are arranged on the discharging branch pipes, sampling pipes are arranged at the lower ends of the side walls of the mixing tanks, and sampling valves are arranged at the sampling pipes. And a pressure control assembly and a nitrogen charging port are arranged above the mixing tank. The utility model has the advantages that explosion-proof protection measures are taken, and dangerous situations are prevented.

The present application relates to the technical field of sheeting machine, and discloses a vacuum sheeting machine, which comprises a mounting frame, a protective shell is arranged above the mounting frame, a feeding port is arranged above the protective shell, a discharging port is arranged at the bottom of the protective shell, a left mounting plate and a right mounting plate are arranged in the inner cavity of the protective shell, and a servo motor is arranged on the side wall of the protective shell. The present application is supported by the mounting frame, the protective shell is matched with the feeding port and the discharging port to realize the orderly feeding and discharging of materials, the left mounting plate and the right mounting plate in the inner cavity stably support the rotating rod and the rotating drum, the condenser tube in the rotating drum optimizes heat transfer, reduces the heat load per unit heat transfer area, effectively improves the production efficiency, reduces the equipment investment, and solves the problems of low efficiency and high investment of the traditional sheeting machine. The inner fixed ring of the mounting shell and the rotating ring on the rotating rod form a preliminary seal, and the left sealing pad plate and the right sealing pad plate are matched and sealed, so that the leakage of the rotating rod can be avoided to prevent the oxidation of the materials or the leakage of toxic gas, and the sealing problem of the traditional sheeting machine is solved.

Methods, devices, and systems for transporting an environmentally sensitive material. An exemplary transport device includes a housing, a chamber exposed to a top surface of the housing, a lid configured to cover the vacuum chamber, and a biasing device configured to provide a force to the lid, such that the lid is forced away from covering the chamber.

A reactor for coating particles includes one or more motors, a rotary vacuum chamber configured to hold particles to be coated, wherein the rotary vacuum chamber is coupled to the motors, a controller configured to cause the motors to rotate the rotary vacuum chamber about an axial axis of the rotary vacuum chamber such that the particles undergo tumbling agitation, a vacuum port to exhaust gas from the rotary vacuum chamber, a paddle assembly including a rotatable drive shaft extending through the rotary vacuum chamber and coupled to the motors and at least one paddle extending radially from the drive shaft, such that rotation of the drive shaft by the motors orbits the paddle about the drive shaft in a second direction, and a chemical delivery system including a gas outlet on the paddle configured inject process gas into the particles.

The invention discloses a microwave synergistic supercritical fluid rotating bed devolatilization device and method for polypropylene carbonate, and relates to the technical field of polymer processing treatment. The device comprises a horizontal high-pressure closed kettle body, a magnetic coupling driving system, a microwave heating system and a wave-transparent rotary drum. According to the method, a multi-period variable-pressure circulating process of boosting swelling, pressure-maintaining microwave heating and rapid pressure reduction is adopted while a roller is kept to rotate continuously to prevent material adhesion. Supercritical carbon dioxide is used for plastification to reduce mass transfer resistance, microwave is used for selectively heating polar impurities to overcome desorption energy barriers, pressure difference is formed inside and outside particles through periodic pressure increasing and decreasing to promote diffusion of deep impurities, and mass transfer driving force is maintained through gas phase replacement. According to the invention, deep devolatilization of polypropylene carbonate can be realized under the low-temperature condition of 35-60 DEG C, and thermal degradation and material agglomeration are effectively avoided.

A moisture evaporation device for a cold-end system in sponge titanium production mainly consists of a large cover and a reactor, with a sealing gasket between the large cover and the reactor. The lower flange of the reactor connects to the flange of a heating device, with another sealing gasket between the two. The large cover is equipped with a vacuum tube and a temperature measuring tube, and a valve C and a pressure gauge B are mounted on the vacuum tube. The heating device provides insulation and mainly consists of a heat inlet pipe, valve A, an outlet pipe, valve B, and pressure gauge A. This invention ensures that the large cover and reactor of the cold-end system are in a water-free state before entering production, guaranteeing the quality of the produced sponge titanium. It has a simple structure and is easy to operate.

The invention discloses a device and a method for modifying a lithium battery ternary positive electrode material through cooperation of microwave plasma and a magnetic field. The device comprises a vacuum transmission unit, a multi-source plasma unit, a pulsed magnetic field unit and a unified and coordinated intelligent control unit, the vacuum transmission unit is used for continuous oxygen-free conveying of materials through a fully-closed channel and a dynamic sealing technology; the multi-source plasma unit performs surface activation and interface modification on the dynamic material through an array type microwave plasma generator; the pulsed magnetic field unit is used for performing non-contact induced recombination on a material body phase structure through an electromagnetic coil controlled by a time sequence; the intelligent control unit cooperatively regulates and controls plasma parameters, magnetic field intensity and material conveying speed; through the multi-field time sequence coupling and vacuum interconnection technology, the problem that modification energy is not matched with structural regulation space-time in a traditional process is effectively solved, and the method has the comprehensive advantages of being uniform in modification, stable in structure, low in energy consumption and high in efficiency.

The present application relates to the technical field of high pressure processing equipment, and particularly relates to a pressure vessel, which comprises a shell, a furnace door, a locking mechanism and a first rolling support mechanism; the shell is provided with a flange, the outer peripheral wall of the furnace door is provided with at least one protruding part, the end face of the flange is locked with the end face of the furnace door through the locking mechanism; the axial two ends of the locking mechanism are respectively provided with a first clamping part and a second clamping part, the second clamping part is matched with the protruding part; the locking mechanism locks or unlocks the shell and the furnace door by rotating along the own axis, when rotating, the first clamping part is rolling connected with the flange through the first rolling support mechanism, and the second clamping part is dislocated or clamped with the protruding part. The first rolling support mechanism can reduce the particulate matter generated by sliding friction during the rotation of the locking mechanism, the first rolling support mechanism can retract into the base body when subjected to a pressure greater than a set pressure, and the overall structure is simple.

The present invention relates to an electrically heated furnace, particularly a furnace for chemical reactions, comprising: a. a furnace chamber including: i. one or more process tubes extending through the furnace chamber; and ii. a plurality of electrically heated heating means disposed inside the furnace chamber for heating the one or more process tubes; and b. an electrical power supply disposed outside the furnace chamber for supplying electrical power to the electrically heated heating means, wherein a. the electrical power supply comprises one or more enclosures connected to but spaced apart from the exterior of the furnace chamber; and b. the electrically heated heating means are connected to an electrical power supply source within the enclosure by one or more electrical connecting rods passing through the wall of the enclosure via one or more hermetic electrical feedthroughs. The present invention also provides a process for conducting chemical reactions in a furnace.

A kneader (1) is provided that suppresses the degradation of the physical properties of the kneaded mixture and has high sealing performance at the shaft portion of the rotor. The kneader (1) includes: a chamber (2) defining a kneading space (15); a rotor (3) having a first rotor shaft portion (12) and a second rotor shaft portion (13); a first bearing portion (4) supporting the first rotor shaft portion (12) in a rotatable manner; a second bearing portion (5) supporting the second rotor shaft portion (13) in a rotatable manner; and seals (6a, 6b) preventing leakage of working fluid at a position closer to the motor than the chamber (2). At least one of the first bearing portion (4) and the second bearing portion (5) includes an unlubricated bearing.