6324 results about "Pumping vacuum" patented technology

The invention relates to the technical field of cold crucible smelting furnaces, in particular to a magnetic suspension smelting device of a multi-station water-cooling crucible, which comprises a furnace chamber, an induction coil and a crucible, the top of the furnace chamber is provided with a furnace cover, the side part of the furnace chamber is provided with a furnace door and a vacuum system for vacuumizing the interior of the furnace chamber, and the induction coil and the crucible are arranged in the furnace chamber. The plurality of crucibles are arranged on a crucible support together, a driving device is arranged at the bottom of the crucible support, and the driving device can drive the crucible support to ascend, descend and rotate, so that the crucibles can enter and exit from the center of the induction coil in sequence. After the interior of the furnace chamber is vacuumized, multiple smelting operations can be carried out in the atmosphere of argon filling after a single vacuumizing state, the operation steps are simple and convenient, the middle actions such as multiple vacuumizing and vacuum breaking are omitted, in addition, only one vacuumizing device and one motor driving device are adopted in the whole device, continuous and automatic smelting can be achieved, and the production efficiency is improved. The production efficiency is greatly improved; and the cost is saved.

The present disclosure describes implementations that relate to a pressure testing and refilling a coolant system. In a first embodiment, the present disclosure describes a pressure tester and refilling device that has a valve system and adapters configured to pressurize and pull a vacuum on the system without disconnecting any of the connections. The device includes a plurality of passages that couple to a vehicle coolant inlet, a pressurized air source, an external coolant source, and an exit. Within these passages, the device has several valves that can be controlled.

The invention discloses vacuum glass and a preparation method thereof. The preparation method comprises the following steps: grinding corners on one sides of the back surfaces of two glass sheets to form notches; tempering the two glass sheets, coating the outer edges of the back surfaces of the glass sheets with a first solder, and forming a notch; combining the two glass sheets; sealing the two glass sheets for the first time after the two glass sheets are combined; a getter is placed in the cavities of the two glass sheets through the notches in the sealing frame; sintering the second welding flux to form an inlaying piece and inserting the inlaying piece into the notch, wherein one end of the inlaying piece is arranged towards the cavity; elastic pressurizing devices are mounted on the two glass sheets, and the elastic pressurizing devices elastically abut against the other ends of the inlaying pieces; and sequentially carrying out vacuumizing and secondary sealing on the two glass sheets, so that vacuum is formed in the cavity, and the second welding flux is molten to seal the notch. The invention solves the problem that the solder at the vacuum lower edge part is easy to foam when being heated at high temperature in the existing vacuum glass preparation method.

The utility model relates to the technical field of packaging machines, and discloses a novel food vacuum packaging machine which comprises a machine body, and a station rotating disc device capable of rotating in a stepping mode is arranged above the top of the machine body. A bag storage device, a bag conveying device, a bag opening device, a bag opening device, a discharging device and a shaping device which can be matched with the station rotating disc device are arranged around the station rotating disc device, a clamp displacement device is arranged on one side of the shaping device, and a lifting conveying belt is arranged on the front side of the clamp displacement device. Double-station vacuum boxes located above the lifting conveying belt are installed on the two sides of the lifting conveying belt through supports correspondingly. The packaging bag filled with materials is moved to the double-station vacuum box through the clamp displacement device to be vacuumized and sealed, and is conveyed to the next process through the lifting conveying belt, so that the double-station vacuum sealing machine is simpler and more convenient, and the efficiency is improved.

The invention relates to the technical field of high-temperature alloy powder metallurgy, in particular to a preparation method of a high-strength cellular distribution gamma'phase high-temperature alloy, which comprises the following steps: preparing high-temperature alloy powder; the prepared high-temperature alloy powder is loaded into a first sheath, and the first sheath is vacuumized and sealed; carrying out preheating treatment on the first sheath; the high-temperature alloy powder in the first package sleeve is dispersed; opening the first sheath, and transferring the high-temperature alloy powder from the first sheath into a second sheath through a charging bucket under a vacuum condition; performing hot isostatic pressing treatment on the second sheath filled with the powder to obtain a first workpiece; cooling the first workpiece to obtain a second workpiece; removing a second sheath outside the second workpiece to obtain a blank, and performing heat treatment on the blank to obtain a target alloy; the powder metallurgy technology is utilized, the preparation technology is adjusted, a specially-distributed gamma'phase is formed in the alloy, and therefore the tensile strength and the endurance strength of the alloy are improved.

The invention provides a full-automatic vacuum oxygen-free oven, belongs to the technical field of wafer processing, and solves the problems that an existing wafer oven is low in feeding, discharging, heating and baking efficiency; and the automation degree is low. The full-automatic vacuum oxygen-free oven comprises an oven frame assembly, an EFEM frame assembly, two vacuum pump assemblies and four wafer loaders which are evenly distributed at equal intervals, four cavity assemblies and four automatic door assemblies are arranged in the oven frame assembly, and a robot transplanting assembly and a machine control box are arranged in the EFEM frame assembly. A main control computer is arranged on the left side of the EFEM frame assembly, the cavity assemblies are connected with the vacuum pump assemblies on the same side through exhaust pipelines, and the cavity assemblies are connected with an external high-purity nitrogen source. According to the invention, through cooperation of multiple sensors, mechanical linkage and a gas-liquid cooling system in the whole process, full-automatic stable grabbing and loading, vacuumizing treatment, heating, constant-temperature process baking treatment, dual-mode cooling and taking treatment of wafers in an oxygen-free and high-precision temperature control environment are realized.

The present invention relates to a food packaging device, and particularly to a rotary vacuum pumping device for a food packaging device. The present invention provides the following technical solutions: A rotary vacuum pumping device for a food packaging device includes a turntable and a vacuum pumping assembly. The vacuum pumping assembly includes a base and a cover body. An opening and closing cover driving mechanism is provided between the turntable and the vacuum pumping assembly. A support frame is provided on the turntable. The cover body is connected to the support frame through a support arm. A closing position tension adjusting member is provided between the support frame and the cover body; the base is hingedly connected to the turntable through a hinge block. The base has a linkage station. The support arm and the linkage station of the base are linked through a connecting rod. One end of the connecting rod extends between the two hinge points of the support arm and is hingedly connected to the support arm, and the other end is at the linkage station and is hingedly connected to the linkage station. By adopting the above technical solutions, a rotary vacuum pumping device for a food packaging device with energy saving, shortened vacuum pumping time, and simple structure is provided.

The invention discloses an air tightness detection system for an electric compressor controller, and particularly relates to the field of industrial equipment detection, which comprises a self-adaptive clamp module, an intelligent calibration module, a rapid vacuum module, a multi-channel sensor acquisition module, an air tightness detection module, a leakage positioning module and a detection report output module. According to the air tightness detection system for the electric compressor controller, the self-adaptive clamp module and the intelligent calibration module are used for calibrating a complex detection process and ensuring that a clamp is proper in clamping force, optimal in angle, tight in fitting and stable in position precision, so that the problem of detection adaptation of the electric compressor controllers of different models and specifications is solved; the time cost and the use cost caused by frequently adjusting the clamp and calibrating detection parameters are reduced; the vacuumizing process and the pressure maintaining state are accurately controlled through the rapid vacuum module, and the requirement of large-scale production for the detection speed is met; the airtightness detection module is used for calculating airtightness performance indexes and sending signals and data to corresponding modules at the same time, so that the detection precision and reliability are improved.

The invention discloses a vacuum-assisted pultrusion preforming device for a composite material. The vacuum-assisted pultrusion preforming device comprises a yarn threading plate, a gum dipping tank, a gum extruding roller and a vacuum-assisted preforming mold which are sequentially arranged in the pultrusion direction, wherein fiber bundles penetrate through the yarn threading plate in a layered mode, the gum dipping tank is used for containing resin, and the gum extruding roller is used for extruding redundant resin. The vacuum auxiliary preforming mold is provided with a preforming mold cavity, a vacuum cavity is formed in one section of the preforming mold cavity of the vacuum auxiliary preforming mold, an air exhaust hole is formed in the upper portion of the vacuum cavity, and a semi-permeable membrane allowing gas to pass through but blocking resin to pass through is arranged at the air exhaust hole. And the air exhaust hole is externally connected with a vacuumizing device. The vacuum-assisted pultrusion preforming device can effectively discharge microbubbles in resin and fiber bundles, effectively control uniform distribution of the content of the resin and remarkably promote full infiltration of high-viscosity resin to fibers.

The invention discloses a long-term vacuum maintenance type Fabry-Perot cavity and a preparation method thereof. An annular gasket is clamped between two reflecting lenses to directly bond in a vacuum environment through Van der Waals force, a vacuum core cavity which is permanently sealed and is vacuum in the air is formed, the vacuum core cavity is fixedly placed in a glass sleeve, and the two ends of the glass sleeve are sealed through an ultraviolet light adhesive bonding interface by adopting optical window pieces. After the interior of the glass sleeve is vacuumized through the exhaust pipe, the glass sleeve is sealed through local heating sintering, and a two-stage vacuum barrier is formed; the Fabry-Perot cavity is long in vacuum holding time and small in size, and does not need to be externally connected with a vacuum pump to maintain vacuum; the device is simple, and the vacuum degree of the Fabry-Perot cavity can be maintained for more than two years under the condition that the processing difficulty is not improved.

The invention provides a powder oxygen-free inert gas environment filling line and a filling method.The filling line comprises a conveying chain, a transfer bin, a working bin, a buffering bin, a filling device, a vacuumizing device, an inert gas inflation device and a cap screwing device, and the conveying chain sequentially penetrates through the transfer bin, the working bin and the buffering bin; a filling opening of the filling device and the cap screwing end of the cap screwing device are both located in the working bin, sealing doors are arranged at the end, away from the working bin, of the transfer bin, the position between the transfer bin and the working bin, the position between the working bin and the buffering bin and the end, away from the working bin, of the buffering bin correspondingly, and the vacuumizing device communicates with the transfer bin, the working bin and the buffering bin in sequence through a first pipeline. The inert gas charging device is sequentially communicated with the transfer bin, the working bin and the surge bin through a second pipeline, oxygen detection sensors and gas pressure sensors are arranged in the transfer bin, the working bin and the surge bin, and the filling line can ensure that the filling process is in an oxygen-free environment, so that the quality of powder products is ensured.

The invention discloses an electrical equipment partial discharge ultrahigh frequency signal intelligent detection device, and relates to the technical field of electrical equipment insulation state monitoring, the electrical equipment partial discharge ultrahigh frequency signal intelligent detection device comprises a flat plate, one side of the flat plate is provided with a sealing suction cup, the sealing suction cup is internally provided with a damping base, the damping base is internally provided with a three-axis displacement mechanism, and the three-axis displacement mechanism is provided with a three-axis displacement sensor. A sensor array is arranged on one side of the three-axis displacement mechanism, a control layer is arranged on one side of the sensor array, horizontal detection sensors are arranged on the two sides of the damping base correspondingly, air suction holes are formed in the two sides of the horizontal detection sensors correspondingly, and telescopic supporting legs are arranged on one sides of the air suction holes. The number of the telescopic supporting legs is three, the three telescopic supporting legs are evenly distributed with the damping base as the circle center at the included angle of 120 degrees, the sealing suction cups are matched with the four sets of circumferentially-distributed air suction holes and air suction pumps, vacuum can be rapidly pumped to form negative pressure adsorption, the flat plate is tightly attached to the surface of tested equipment, and the fixing stability of the device is remarkably improved.

The invention discloses a vacuum laser welding cabin and a welding method thereof, and belongs to the technical field of welding, the vacuum laser welding cabin comprises a welding cabin, a vacuumizing mechanism and a workpiece supporting mechanism, the welding cabin comprises a box body and a box cover, the box body comprises a pressure-bearing cabin, and a laser transmission module is arranged on the box body; the laser transmission module is used for transmitting laser to enable the laser to penetrate through the laser transmission module to weld a fuel element in the pressure-bearing cabin, the vacuumizing mechanism is used for vacuumizing the pressure-bearing cabin, and the workpiece supporting mechanism is used for clamping the fuel element and can drive the fuel element to rotate to adjust the welding position. A fuel element is fixed through the workpiece supporting mechanism, the fuel element can be driven to automatically rotate to achieve girth welding, and the double requirements for planar welding of a plate-shaped fuel element and girth welding of a columnar fuel element can be met; the welding requirements of fuel elements of different shapes and sizes are met, the overall size of the vacuum laser welding cabin is reduced, and energy consumption and cost are reduced.

The invention discloses a double-wafer bonding clamping device and an application method thereof, and relates to the field of wafer bonding, the double-wafer bonding clamping device comprises a chuck, an upper chuck used for adsorbing an upper wafer, a lower chuck, a chassis seat and three clamping positioning mechanisms, the lower chuck is arranged at the bottom of the upper chuck, the chassis seat is arranged at the bottom of the lower chuck, and the three clamping positioning mechanisms are arranged on the chassis seat. A fixing part used for fixing the lower chuck is arranged on the chassis base, the three clamping and positioning mechanisms are arranged in a circumferential array shape with the axis of the lower chuck as the center, and each clamping and positioning mechanism comprises an air cylinder assembly, a Spacer-Clamp fixing base assembly, a Spacer assembly and a Clamp assembly. Through the spacing piece which can be fed in the horizontal direction, spacing clamping of the two wafers after the marking point alignment process is achieved, the upper wafer is pressed through the driving pressing wheel, alignment fixing between the upper wafer and the lower wafer is guaranteed, the wafer gap vacuumizing technology before bonding in the clamp can be achieved, and bubbles of a bonding glue layer are effectively avoided.

The invention discloses a preparation technology of isostatic pressing graphite. The preparation technology comprises the following steps of S1, raw material and ingredient pretreatment, S2, grinding, S3, mixing and kneading, S4, forming, S5, roasting, S6, dipping, S7, graphitization, S8, processing and detection and S9, finished product packaging. A graphite grinding machine used for primary grinding in the step S2 is a vertical roller mill; and a graphite mill used for secondary milling is an airflow mill. The kneading machine in the step S3 is a heating type kneading machine. And in the step S4, the vacuumizing time is 0.5 h, and the vacuum degree is 0 to-0.06 MPa. The roasting furnace in the step S5 is a rotary graphite roasting furnace.

The invention relates to the technical field of water removal and drying of a battery, in particular to a staged flowing type vacuum-pumping water removal method for the battery, and compared with a traditional vacuum-pumping water removal mode, the method can avoid the situation that vacuum needs to be pumped again after a large number of water molecules return to the battery again during pressure relief in the baking process. Therefore, the overall drying time of the battery is shortened, the battery dewatering efficiency is improved, the drying gas consumption is reduced, and the product quality is improved.

The utility model provides a preparation device of a doped diamond film. The preparation device comprises a first main body, a second main body, a heating assembly, a carrying assembly, a vacuum assembly and a laser emission assembly. The first main body is provided with a first cavity, the first cavity is provided with a base station used for bearing a base material, and the first cavity is used for being connected with reaction gas. The heating assembly is arranged in the first cavity, the second main body is provided with a second cavity, and the first cavity and the second cavity can be switched between a communicating state and an isolated state through the switch valve. The carrying assembly is arranged in the second cavity and used for conveying the doping target material from the second cavity to the first cavity or from the first cavity to the second cavity when the first cavity communicates with the second cavity. The vacuum assembly is used for vacuumizing the first cavity and / or the second cavity. The laser emitting assembly is used for emitting laser towards the doping target material located in the first cavity. According to the technical scheme, preparation of the doped diamond film doped with multiple elements is achieved.

The utility model discloses a vacuum cooling temporary storage mechanism and thin film deposition equipment, and relates to the technical field of semiconductor equipment. The vacuum cooling temporary storage mechanism comprises a temporary storage bin, a sealing gate valve, a storage box, a vacuumizing assembly and a cooling module. The vacuumizing assembly is connected with the temporary storage bin, the storage box is arranged in the temporary storage bin, the temporary storage bin is provided with a conveying opening, the sealing gate valve is used for closing or opening the conveying opening, the cooling module is connected with the temporary storage bin, and the cooling module is used for cooling the temporary storage bin. Compared with the prior art, the vacuum cooling temporary storage mechanism provided by the utility model adopts the vacuumizing assembly connected with the temporary storage bin and the sealing gate valve mounted in the temporary storage bin, so that the cleanliness of the temporary storage bin can be ensured, the temporary storage bin is prevented from being influenced by the transmission bin, gas in the temporary storage bin can be directly pumped out, and the service life of the temporary storage bin is prolonged. And heat emitted by the wafer is rapidly taken away, and the cooling efficiency is high.

The invention relates to the technical field of composite resin preparation, and discloses a silicon-molybdenum alloy target material preparation method which comprises the following steps: preparing raw materials, selecting molybdenum powder and silicon powder with the purity not lower than 99.9%, mixing, putting the raw materials into a vacuum mixer, vacuumizing to 0.01-0.1 Pa, stirring for 1-5 hours, carrying out ultrasonic assistance, controlling the temperature to 25-40 DEG C to prevent oxidation, and carrying out a forming process. Filling the mixed powder into a detachable hard alloy mold coated with a 0.05-0.2 mm boron nitride coating, carrying out cold press molding, maintaining the pressure for 5-20 minutes to obtain a biscuit, sintering, putting the biscuit into a vacuum sintering furnace, firstly carrying out microwave-assisted heating, then raising the temperature to 1500-1800 DEG C, introducing trace argon in the later period to regulate and control a structure, carrying out a post-treatment process, carrying out numerical control processing on a sintered target material, carrying out chemical cleaning on the mixed solution of hydrofluoric acid and nitric acid, and finally carrying out vacuum sintering. Performing plasma treatment; and finally, performing vacuum packaging and filling high-purity nitrogen. The raw materials are high in purity and excellent in granularity; uniformly mixing and preventing oxidation; forming and sintering are precisely controlled, and the quality of the target material is guaranteed; the surface performance is improved through post-treatment, packaging is oxygen-proof and moisture-proof, and the target material meets the high-end industry requirement.

The utility model discloses servo vacuum liquid filling press fitting equipment which comprises a rack, a workbench is fixedly arranged in the middle of the rack, a vacuum liquid filling sealing mechanism is arranged on the upper portion of the workbench, and a movable press fitting mechanism is arranged on the upper portion of the rack. The vacuum liquid filling sealing mechanism comprises a base, a positioning sleeve used for containing the automobile hydraulic bushing is arranged in the middle of the base, and an inflatable sealing ring is arranged on the upper portion of the positioning sleeve. The movable press-fitting mechanism comprises a servo electric cylinder vertically and fixedly arranged on the upper portion of the rack, the telescopic end of the servo electric cylinder is fixedly connected with a movable plate, a pressing plate is fixedly arranged at the bottom of the movable plate, and a pressing head right facing a middle hole of the positioning sleeve is fixedly arranged at the bottom of the pressing plate. According to the utility model, the automatic vacuumizing, liquid filling, press-fitting sealing and residual liquid recycling operations of various hydraulic bushings with different models and sizes can be realized, the equipment is stable and reliable, the sealing performance of the automobile hydraulic bushing can be ensured, and the product quality and the production efficiency can be improved.

The utility model discloses an adjustable manipulator clamping structure which comprises a clamping frame, two sets of clamping blocks are symmetrically arranged on the clamping frame, synchronous opposite driving assemblies are arranged in cooperation with the two sets of clamping blocks, vacuum suction cups are embedded in the surfaces of the clamping blocks, vacuumizing assemblies are arranged in cooperation with the vacuum suction cups, a first connecting frame is arranged above the clamping frame, and a second connecting frame is arranged above the first connecting frame. A first motor is arranged on the first connecting frame, the output end of the first motor is connected with the clamping frame, a second connecting frame is rotationally arranged on the first connecting frame, a second motor is arranged on the second connecting frame in transmission connection with the first connecting frame, a fixing seat is horizontally and movably arranged on the base, and a mounting seat is rotationally and adjustably arranged on the fixing seat. According to the clamping mechanism, the clamping stability of a machined part can be improved, the moving flexibility is good, and the clamping mechanism is flexible, convenient and fast to use.

The invention discloses a preparation method of a copper-tungsten composite material, which comprises the following steps: material preparation: taking a copper rod and a tungsten rod, and carrying out oil removal and ultrasonic cleaning on the copper rod and the tungsten rod; a tungsten rod is placed in a forming hole of a graphite mold, then a copper rod is placed on the top of the tungsten rod, the bottom end of the copper rod is provided with a circular truncated cone part, and an obtuse angle alpha is formed between the side face of the circular truncated cone part and the side face of the tungsten rod; feeding into a furnace: feeding the graphite mold with the copper rod and the tungsten rod into a vacuum furnace; vacuumizing is conducted, specifically, the vacuum furnace is vacuumized, and the vacuum degree is 10 <-3 >-10 <-5 > Pa; vacuum melting: heating a vacuum furnace to carry out vacuum melting, wherein the melting temperature is 1200-1320 DEG C; keeping high temperature: keeping the temperature at 1200-1320 DEG C for 5-10 minutes; controlled cooling: cooling to obtain a composite material; and post-treatment: carrying out heat treatment and machining on the composite material. Compared with the prior art, preparation of the high-quality copper-tungsten composite material can be achieved.

The invention discloses an automatic coffee capsule filling and sealing machine which comprises a filling mechanism, a powder compacting mechanism, a sealing film punching and sealing mechanism and a vacuumizing and nitrogen filling mechanism which are mutually combined for use to play a role. Compared with a traditional structure, the sealing film punching and sealing mechanism has the advantages that the knife is hidden in the base, and operators cannot be hurt during maintenance or operation, the size of the powder pressure is adjusted through the pressure of the powder rotating air cylinder, so that the capsule coffee is compacted, and the sealing film punching and sealing mechanism is simple in structure and convenient to operate; and secondly, in the operation process of each cycle, the starting and stopping positions of the sealing pressure head heating system are separated from the sealing opening film pressing cutter device, the vacuumizing and nitrogen filling mechanism vacuumizes the capsule cup filled with materials, directly sucks away air and supplements nitrogen into the capsule cup, and the almost oxygen-free environment in the capsule cup is achieved.

The invention relates to the technical field of stator assembly glue pouring, in particular to a motor stator assembly glue pouring device and a glue pouring process, the motor stator assembly glue pouring device comprises a glue pouring mold, a positioning shaft and a glue pouring ring, the glue pouring mold comprises a lower mold base, an upper mold base and a plurality of connecting pieces; an annular cavity is defined by the outer peripheral surface of the positioning shaft and the inner walls of the lower die holder and the upper die holder, and the annular cavity is communicated with an axial groove of the stator assembly to jointly form a closed glue pouring cavity; the vacuumizing assembly is used for vacuumizing the glue filling cavity; the section of the glue pouring ring is of a W-shaped structure, the highest point in the middle of the glue pouring ring is located over the winding, and the two lowest points correspond to the inner side and the outer side of the winding respectively; a plurality of liquid injection holes are formed in the corners of the two lowest points at intervals in the circumferential direction. Through the W-shaped structure of the glue filling ring, the glue liquid is synchronously filled from the inner side and the outer side of the winding and is matched with immersion type rising, the problems of bubbles and air holes in traditional glue filling are solved, the insulation and heat dissipation performance is guaranteed, and the operation reliability of the motor is improved.

The invention relates to the technical field of vacuum machines, and particularly discloses a cavity type vacuum machine capable of being simultaneously suitable for internal pumping and external pumping. An air nozzle is arranged on the inner wall of the vacuum cavity, and the outer edge of the front end of the vacuum cavity is sunken downwards; the vacuum pump is mounted on the case and is communicated with the air tap; the two conductive columns are mounted in the case; the heating rod is arranged in the vacuum cavity; the box cover is installed on the machine box and used for opening or closing the vacuum cavity, a blocking piece is arranged on the inner wall of the front end of the box cover, and the blocking piece is attached to the outer edge of the front end of the vacuum cavity in the using process; the pressing strip is mounted on the inner side of the box cover; in the external vacuumizing process, the vacuum bag is horizontally arranged on the outer edge of the front end of the vacuum cavity and the upper surface of the heating rod. In the built-in vacuumizing process, the vacuum bag is horizontally arranged in the vacuum cavity and on the upper surface of the heating rod. According to the vacuum machine, materials such as food and the like and vacuum bags can be placed inside and outside the vacuum cavity to be vacuumized.

The invention relates to the field of package detection, in particular to a nondestructive flexible package leakage detection method and device which comprises a detection box, symmetrically distributed guide rails are arranged on the inner bottom wall of the detection box, a drawing groove is formed in one side of the detection box, a drawer is arranged between the drawing groove and the guide rails in a sliding mode, and a handle is arranged in front of the drawer. A supporting plate is further arranged on the inner side wall of the detection box, a pushing air cylinder is arranged on the supporting plate through an air cylinder base, a detection unit is arranged on the telescopic wall of the pushing air cylinder, a containing unit is arranged in the drawer, the sealing performance of the packaging bag can be detected through the detection unit, and air in the drawer is pumped out through a vacuumizing device; the packaging bag is in a vacuum state, the pushing air cylinder pushes the pressing and covering plate to enter the containing groove to press and cover the packaging bag, the displacement sensor monitors the moving condition of the circular shaft in real time, and the sealing performance of the packaging bag is judged according to the expansion or flattening condition of the packaging bag.

The invention discloses a diaphragm compressor, which belongs to the technical field of diaphragm compressors, and is characterized in that a second piston is additionally arranged on a piston assembly on the basis of the structure of the existing diaphragm compressor, the second piston is arranged on a piston rod, and the second piston axially reciprocates in a middle body. When the second piston moves rightwards, gas in the first cavity begins to expand, meanwhile, the middles of the diaphragms are vacuumized to enable the three diaphragms to be attached, the volume of the gas cavity is increased, the air suction amount is increased, and therefore the problem that the volume efficiency of the diaphragm compressor is poor due to diaphragm separation is solved. The oil pool of the crankcase is vacuumized, bubbles contained in oil in the oil pool of the crankcase are removed, the elasticity modulus of hydraulic oil is improved, the influence of gas contained in the hydraulic oil on the actual volume efficiency of the high-pressure diaphragm compressor is avoided, and the volume efficiency of the diaphragm compressor is effectively improved.

The utility model discloses a glue filling device and an inductance glue filling wire, the glue filling device comprises a glue filling mechanism, a vacuumizing mechanism and at least one reserved station, the glue filling mechanism is used for filling glue to a target object; the vacuumizing mechanism is used for vacuumizing the target object; the reserved station is used for additionally arranging a glue filling mechanism or a vacuumizing mechanism; wherein the glue filling mechanism and the vacuumizing mechanism are sequentially connected with each other by taking a reserved station as a reference, and both the glue filling mechanism and the vacuumizing mechanism are of movable modular structures, so that the glue filling mechanism or the vacuumizing mechanism can be quickly removed or changed in position. According to the glue pouring device and the inductor glue pouring line, the movable modular structure enables the number and position of the glue pouring mechanisms and the vacuumizing mechanisms to be adjustable, different glue pouring processes of different products are met, and compatibility is extremely high; the problems of cost waste and land occupation caused by repeated construction of a production line are solved, and the production efficiency is effectively improved.

The invention relates to the technical field of vacuum heat treatment of cold work die steel, in particular to an annealing cooperative control method and system for vacuum heat treatment of the cold work die steel, and the method comprises the steps: determining a vacuum degree change factor based on the change condition of vacuum degree measured values at all collection moments from a vacuumizing ending moment to each collection moment, determining a heat transfer influence factor by combining the difference between the vacuum degree measurement values between the adjacent acquisition moments and the difference between the temperature measurement value and the temperature of the surface of the workpiece; determining a tissue transformation influence factor based on the difference of the vacuum degree measured values and the difference of the heat transfer influence factors between the adjacent acquisition moments; and annealing of vacuum heat treatment of the cold work die steel is controlled based on the heat transfer influence factor and the structure transformation influence factor. The annealing temperature and the heat preservation time of vacuum heat treatment of the cold work die steel are controlled, and the performance of the cold work die steel is improved.

The invention provides a cooking device which comprises a box body forming a shell outside the cooking device, an inner container arranged in the box body, a frying barrel arranged in the box body and located on one side of the inner container, a vacuum pumping module used for pumping air and an oil box arranged at the bottom of the frying barrel, and the frying barrel comprises a barrel body and a first oil outlet formed in the bottom of the barrel body; the first oil outlet is communicated with the oil box, and is provided with an oil control switch for controlling the communication of the frying cavity and the oil box, a pressure relief channel for communicating the frying cavity and air, and a pressure relief switch arranged in the pressure relief channel. In the cooking process, the vacuumizing module is controlled to exhaust air in the frying cavity; after cooking is finished, firstly, an oil control switch is controlled to be turned on, so that oil in the frying cavity flows into an oil box through a first oil outlet; and then the pressure relief switch is controlled to be turned on to relieve the pressure of the frying cavity, so that the influence on the taste of the food materials due to re-oil absorption of the food materials after pressure relief is avoided.