83results about "Pressure/vacuum vessels" patented technology

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 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 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 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 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 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.

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.

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.

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.

The utility model discloses a pressure stabilizing device of a polyacrylamide reaction kettle, and relates to the technical field of pressure stabilization of reaction kettles. The pressure stabilizing device comprises a buffer cylinder, a spring cylinder, a pressure stabilizing piston and a pressure adjusting assembly, the pressure stabilizing piston is slidably sleeved with the buffer cylinder, the lower end of a beam end sleeve fixedly sleeved with the lower end of the buffer cylinder is communicated with an air guide pipe, the spring cylinder is arranged on a cylinder end cover fixedly sleeved with the upper end of the buffer cylinder, and the pressure adjusting assembly is arranged at the upper end of the spring cylinder. The upper end of a compression spring sleeved with the spring barrel is in transmission connection with the pressure adjusting assembly. The gas guide pipe at the lower end of the beam end sleeve at the bottom end of the buffer cylinder is connected with the reaction kettle, and gas in the reaction kettle enters the buffer cylinder to push the pressure stabilizing piston to move upwards, so that the volume in the buffer cylinder is increased, and the gas pressure is reduced; the pressure of the compression spring is adjusted through the pressure adjusting assembly, so that the pressure of the compression spring on the pressure stabilizing piston is adjusted, and the air pressure in the buffer cylinder and the reaction kettle is controlled.

The utility model relates to the field of hazardous waste treatment equipment, in particular to an organic waste liquid compatibility device which comprises a negative pressure compatibility unit, an absorption unit and a support, the absorption unit is arranged on one side of the negative pressure compatibility unit, and the negative pressure compatibility unit is provided with a negative pressure reaction tank and a negative pressure suction pipe communicated with the negative pressure reaction tank. The absorption unit is provided with a water tank and a waste gas collecting pipe, one end of the waste gas collecting pipe is inserted into water liquid contained in the water tank, and the other end of the waste gas collecting pipe is arranged in the negative pressure reaction tank. According to the utility model, the sealed negative pressure cavity of the negative pressure reaction tank fixedly connected with the tank cover and the gas pressure sensor for automatically detecting the pressure are utilized to prevent gas explosion in the organic waste liquid compatibility process; volatilized gas in the negative pressure reaction tank is conveyed into water liquid stored in a water tank of the absorption unit through a waste gas collecting pipe of the absorption unit to be absorbed, and therefore the risk that the surrounding environment is affected and operators are injured during organic waste liquid compatibility can be avoided.

Methods and devices for sealing a storage vessel or other apparatus are provided. A piston moves from a first position to a second position within a body to compress a sealing element, such as a metallic ring. One or more attachment elements connect the piston to the body. A removable pipe can be used for pump-out.

The invention provides a hydrogen production device and method based on friction catalysis of bulk silicon single crystals. The hydrogen production device comprises a reaction container with an open top, the top of the reaction container can be sealed, a silicon single crystal wafer is arranged on the inner surface of the bottom of the reaction container, the reaction container is further filled with suspension liquid, and the suspension liquid comprises insulator powder and deionized water; magneons are further arranged in the reaction container and distributed on the upper surface of the silicon single crystal wafer, a magnetic stirrer is further arranged at the bottom of the outer side of the reaction container, and the magnetic stirrer drives the magnetons to rotate, so that the insulator powder in the suspension is rubbed with the silicon single crystal wafer, and catalytic hydrogen production is achieved. A vacuumizing opening is also formed in the side wall of the reaction container and is communicated with a vacuumizing system outside the reaction container. A gas collecting port is also formed in the side wall of the reaction container and is communicated with a hydrogen collecting unit outside the reaction container. Through local friction between the silicon single crystal wafer and the insulator powder, electron hole pairs are excited, the hydrogen production rate is increased, and the utilization efficiency of the catalyst is higher than that of a traditional nano powder system.

To provide pressure-stepped chemical reactions and associated methods, systems, apparatuses, and articles.SOLUTION: In an acid digestion reaction performed in a vessel, an elastic lid or septum can be mounted to the mouth of the vessel with a flanged band. In response to determining that a predetermined pressure has been reached in the vessel, a closing force being applied to the lid or septum can be reduced to initiate venting from the vessel. One or more parameters, including the closing force, can be monitored during the venting, and the closing force can be responsively adjusted to optimize the venting. The closing force can be provided by a clamping apparatus that may or may not include a hydraulic system. The clamping apparatus can be configured to increase the closing force in response to increased hydraulic pressure in the hydraulic system.SELECTED DRAWING: None

The invention discloses an array device for simultaneous reaction of a large batch of quartz tubes, belongs to the technical field of vacuumizing sealing tube reaction equipment, and solves the problems of limited quartz tube reaction quantity, low efficiency, high energy consumption, poor safety and easiness in damaging a reaction furnace in the prior art. The device comprises a box body made of a high-temperature long-acting use material, a top cover, and a thermal insulation layer and a thermal insulation array layer which are laid in sequence, the corners of the box body are round corners, the top cover sinks and extends to form a closed space with the box body, and the heat preservation array layer is provided with array through holes matched with the quartz tubes, so that the quartz tubes and reactants can be completely coated, and the independent reaction of the large-batch quartz tubes is realized. The device is provided with a vertical structure and a transverse structure, and the transverse device is matched with a buckle structure, so that the array can be prevented from sliding off and fragments can be prevented from splashing. The device can realize synchronous reaction of a large batch of quartz tubes, is high in experiment efficiency, low in energy consumption, stable in heat preservation, good in safety, high in practicability and suitable for various high-temperature closed quartz tube reaction scenes, and each part can be flexibly adjusted as required.

The utility model discloses a pressure tank device for producing lopinavir, which belongs to the technical field of chemical equipment and comprises a tank body, an injection unit and a crushing unit, the tank body is arranged for a pressure tank and used for reaction of mixed materials, the top of a connecting block is connected with a fixing block through a bolt, and the fixing block is connected with the injection unit through a bolt. Through holes are formed in the tops of the fixing block and the connecting block, the crushing unit comprises a feeding cylinder installed at the top of the fixing block, a feeding port is formed in the feeding cylinder, and the lower surface of the interior of the feeding port penetrates through the feeding cylinder and is connected with the guide pipe to be provided with a falling hole. An erecting mechanism is fixedly mounted at the top of the feeding cylinder, a driving motor is fixedly mounted at the top of the erecting mechanism, a rotating shaft is rotatably mounted at the bottom of the driving motor, and a crushing net is in threaded connection with the outer wall of the rotating shaft. And the influence on the subsequent reaction is reduced.

The invention discloses a totally-enclosed quasi-continuous feeding tubular hydrolysis high-pressure reaction kettle, which belongs to the technical field of high-pressure reaction equipment, and comprises a support frame, the support frame is provided with a feeding hydrolysis reaction kettle, an intermediate hydrolysis reaction kettle and a discharging hydrolysis reaction kettle, and the feeding hydrolysis reaction kettle, the intermediate hydrolysis reaction kettle and the discharging hydrolysis reaction kettle are communicated in series; the feeding hydrolysis reaction kettle comprises a reaction kettle body, a stirring and conveying unit, a heating unit, a sealing unit and a driving unit, the heating unit is located on the outer side of the reaction kettle body, the stirring and conveying unit is located in the reaction kettle body, and the stirring and conveying unit is connected with the driving unit. By adopting the totally-closed quasi-continuous feeding tubular hydrolysis high-pressure reaction kettle, the effective operation time and the heat energy utilization efficiency of equipment are remarkably improved, the average treatment period of materials is shortened, and meanwhile, the safety of totally-closed operation and good adaptability to solid-containing materials are ensured.

The utility model discloses a kind of pressurized chemical synthesis purification devices, belong to synthetic purification device technical field.A kind of pressurized chemical synthesis purification device, including purification tank, booster tank, the communication pipe is connected on the booster tank, another end of the communication pipe is communicated with purification tank, further include: screw rod, threaded connection is in on the booster tank;Piston plate, sliding connection is in the booster tank, the piston plate bottom fixedly connected with connector, one end of the screw rod is rotatably connected in connector;Annular installation groove, setting on the side of the piston plate;Sealing air bag, install in the annular installation groove, for the gap between piston plate and booster tank is sealed filling;The utility model is through the setting of sealing air bag, can effectively fill the gap between piston plate and booster tank, avoid the leakage of gas, simultaneously through the setting of cover plate, in subsequent can effectively replace sealing air bag, facilitate long time use.

The invention relates to the technical field of magnetic stirring, and discloses a magnetic stirring autoclave which comprises an autoclave body, a connecting seat is mounted at the top of the autoclave body, an isolation sleeve is arranged at the top of the connecting seat, a motor mechanism is mounted at the top of the isolation sleeve and provides original power for the autoclave, a stirring shaft is mounted at the output end of the motor mechanism, and the stirring shaft is connected with the motor mechanism. A stirring shaft is arranged in the kettle body, one end of the stirring shaft extends into the kettle body and is connected with a stirrer structure, the stirrer structure stirs materials in the kettle body under the action of magnetic force, inner magnetic steel is arranged in the kettle body and is connected with the stirring shaft, and a cooling system is arranged in the kettle body. The state change of the magnetorheological fluid in the stirrer is controlled by using the magnetic field, and the telescopic shell is driven to transversely extend, so that the stirring range can be dynamically and reversibly adjusted along with the magnetic field intensity (rotating speed). The stirring volume is effectively increased, the mixing dead angle on the inner edge of the kettle is eliminated, and the process requirements of materials with different viscosities are automatically met.

The utility model belongs to the technical field of reaction kettle production safety structures, and provides a reaction kettle for chemical safety production, which comprises a kettle body, a kettle liner arranged in the kettle body, a constant pressure tank arranged between the kettle liner and the inner wall of the kettle body, and an inner discharge pipe fixedly connected with the side wall of one side of the kettle liner in a penetrating manner, the side wall, far away from the inner discharge pipe and close to the end, of the kettle body is fixedly connected with an outer discharge pipe in a penetrating manner, the outer discharge pipe is of an L-shaped structure, the side wall, far away from the outer discharge pipe and close to the bottom edge, of the kettle body is fixedly connected with a discharge pipe in a penetrating manner, and the discharge pipe and the outer discharge pipe are both communicated with the constant-pressure groove. When the pressure in the constant-pressure groove is too large, air pressure enters the inner discharge pipe and ejects the two movable plugging plates open, so that the air pressure can enter the constant-pressure groove through the unfolded movable plugging plates, when the pressure in the constant-pressure groove is too large, the plugging plates are ejected open, the pressure in the constant-pressure groove flows and is discharged along the outer discharge pipe, and the pressure in the constant-pressure groove is reduced.

To safely take out a conveyance mechanism provided in a reaction vessel. A take-out apparatus (30) according to the present disclosure takes out a conveyance mechanism (13) from a reaction apparatus (10) including a reaction vessel (11) and the conveyance mechanism (13), the reaction vessel (11) obtaining a product by causing a reaction of a substance to be treated that is charged into the reaction vessel (11), the conveyance mechanism (13) being provided in the reaction vessel (11) to convey the substance to be treated. The take-out apparatus (30) includes a housing vessel (31) hermetically coupled to the reaction vessel (11), and a coupling member (32) to be coupled to the conveyance mechanism (13) in the housing vessel (31), and the conveyance mechanism (13) is taken out from the reaction vessel (11) by moving the coupling member (32), and is housed in the housing vessel (31).