688 results about "Vacuum pumping" patented technology

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 helium detection device and method for the airtightness of a bonding interface and a bonding microcavity, and belongs to the field of the airtightness of MEMS devices. The device comprises a sample holder, a mass spectrometer, a molecular pump, a mechanical pump and other components, helium is used as detection gas, and the helium is leaked only through a bonding interface through a customized and processed test sample and sample holder structure, so that the interference of other leaks in a non-bonding area on a test result is avoided. The testing method comprises the steps of sample introduction, vacuum pumping, helium filling, signal detection, dynamic and steady state testing and the like, the helium leak rate is monitored in real time by combining with a helium mass spectrometer, and the minimum leak detection rate is that high-sensitivity air tightness detection is ensured. According to the method, the airtightness of the bonding interface can be independently evaluated, and a reliable basis is provided for development of a novel bonding process. The method is suitable for air tightness detection and evaluation of the bonding process in MEMS device processing and manufacturing.

The invention discloses a full-automatic packaging assembly line for semiconductor material trays, which comprises a material taking and feeding mechanism, a material tray label tearing and pasting mechanism, a moisture-proof monitoring mechanism, a bagging and packaging helium detection mechanism and a boxing and packaging redetection mechanism which are arranged in sequence, and the assembly line realizes material tray grabbing, visual detection and overturning, old label tearing and new label pasting; the full-process automatic operation comprises the following steps of: automatically placing a humidity card and a drying agent, bagging an aluminum foil bag, vacuumizing, filling helium, carrying out heat sealing, carrying out helium detection, and finally automatically boxing, sealing, rechecking, labeling and stacking. By integrating multi-stage visual positioning and detection, double-path parallel heat sealing and closed-loop quality control, the packaging efficiency and precision are remarkably improved, the sealing performance, moisture resistance and traceability of product packaging are ensured, and the automatic packaging machine is particularly suitable for automatic packaging of precise electronic components such as semiconductors.

The application discloses a testing device and testing method for hydrogen isotope permeation parameters of fusion reactor application materials, relates to material testing technology in the hydrogen field, and belongs to the field of material testing technology in the hydrogen field. The testing device for hydrogen isotope permeation parameters of fusion reactor application materials comprises the following: a membrane sample is installed in a membrane testing cavity to divide the membrane testing cavity into a gas inlet sub-cavity and a permeation sub-cavity; a gas inlet tank is selectively communicated with the gas inlet sub-cavity to supply testing gas; a collecting tank is selectively communicated with the permeation sub-cavity to collect outflowing gas; a vacuum pumping structure is used for pumping the gas inlet sub-cavity and the permeation sub-cavity; a heating structure is used for heating the gas inlet sub-cavity and the permeation sub-cavity; a high-resolution mass spectrometer is selectively communicated with the permeation sub-cavity, and gas selectively flows into the high-resolution mass spectrometer. The testing device for hydrogen isotope permeation parameters of fusion reactor application materials can control the gas pressure and temperature in the two sub-cavities respectively, thereby accurately determining the hydrogen isotope permeation parameters of the materials, and the precision is high, and the data resolution is excellent.

The invention provides a machining method for improving the yield of a 2K negative pressure aluminum plate-fin heat exchanger. The machining method comprises the steps that a core body is manufactured; manufacturing an end socket; the core body is connected with the end socket to manufacture the heat exchanger; normal-temperature detection is conducted on the heat exchanger; performing low-temperature detection on the heat exchanger; the heat exchanger is subjected to cold shock treatment, and the background leakage rate and the vacuum degree of each heat exchange channel in the heat exchanger and the background leakage rate and the vacuum degree of the sealing device in the cooling process are obtained; and under the condition that the temperature is reduced to the preset temperature threshold value, low-temperature helium mass spectrum leakage detection is conducted on the heat exchanger, after low-temperature helium mass spectrum leakage detection is conducted, secondary vacuumizing is conducted, then third-time vacuumizing is conducted, the circulation is conducted till ith vacuumizing is conducted, and the total leakage rate is calculated, and i is an integer larger than 3. The heat exchanger with the micro leakage rate, high mechanical strength, compact size and high cleanliness can be obtained, and the machining efficiency and the yield are improved.

The invention discloses a power plant condenser steam injection vacuumizing system and method, and belongs to the technical field of electric power engineering. The system comprises an environmental parameter monitoring module which is used for monitoring and collecting key parameters of an external environment of a power plant in real time; the unit operation parameter acquisition module is used for performing high-precision real-time acquisition on unit core operation parameters to form unit dynamic operation characteristic data; the steam loop state detection module is used for detecting state information in a steam loop on line; the multi-stage steam ejector group automatically switches stage configuration according to different working conditions, and realizes graded adjustment of the vacuumizing capacity of a condenser; the electric regulating valve group is used for accurately regulating the steam supply quantity of each ejector channel to realize dynamic matching of flow and pressure; the intelligent bypass control module is used for stably regulating and controlling the switching process of the ejector based on amplitude limiting and anti-oscillation logic; and the self-learning parameter library module is used for recording and updating optimal operation parameter combinations under different working conditions.

The invention provides a method for measuring a sample hole, and relates to the technical field of semiconductors, and the method comprises the steps: marking a first target surface of a to-be-measured sample, and determining the region range of a target hole of the to-be-measured sample located in the to-be-measured sample through the first target surface; coating the first target surface of the to-be-detected sample to form a glue protective layer; depositing metal on the glue protection layer to form a metal protection layer; the material of the glue protection layer comprises M-Bond 610, and the material of the metal protection layer comprises metal platinum; the thickness of the glue protection layer is 500 nm to 1 [mu] m, and the thickness of the metal protection layer is 300 nm to 600 nm; etching along the second target surface of the to-be-tested sample until the target hole is exposed; sampling the to-be-tested sample with the exposed target hole to obtain a sample piece with the target hole; detecting a target hole; after the first target surface of the to-be-detected sample is coated to form the glue protection layer, the method further comprises the following steps: performing vacuum pumping to remove gas in the target hole.

The invention discloses a dredged mud upper and lower part double-face combined vacuum consolidation drainage method, which comprises the following specific implementation processes: laying a horizontal sand bag containing a PVC (Polyvinyl Chloride) pipe and a vertical drainage pipe at the bottom of a cofferdam foundation pit to serve as a bottom drainage system, blowing and filling dredged mud in a layered manner, controlling the thickness and the water content of each layer, and when the water content of a soil body is lower than twice liquid limit, stopping drainage; starting the bottom vacuum water pumping device to perform preliminary water drainage, inserting straw bundles into the soil body through hollow pipes with bottom covers to form a vertical water drainage structure after the strength of the soil body meets the requirement, sequentially laying geotechnical cloth, a straw woven blanket, a PVC water drainage pipe network and a sealing film on the top to construct a top vacuum system, and finally synchronously starting the top vacuum water pumping device and the bottom vacuum water pumping device. The vacuum difference is controlled by adjusting the ventilation device, and upper and lower double-face combined vacuum consolidation drainage is achieved. The drainage consolidation of the dredged mud is effectively accelerated, the treatment efficiency is improved, and the drainage effect is enhanced through precise control over the vacuum degree and application of materials such as straw.

The invention discloses a multi-stage isolation high vacuum obtaining system of a neutral beam injection device and a control method, and relates to the field of nuclear fusion Tokamak vacuum pumping design. The low-temperature pump unit comprises a plug-in low-temperature pump in a neutral beam vacuum chamber, and the plug-in low-temperature pump is used for refrigerating and cooling liquid nitrogen and liquid helium to adsorb gas to realize vacuum pumping; the low-temperature pump preceding-stage air extractor unit comprises a molecular pump unit, a roots pump unit and a mechanical pump unit; an inlet of the molecular pump set is connected with the neutral beam vacuum chamber through a gate valve, and an outlet of the molecular pump set is connected with an inlet of the roots pump set through a forestage valve. An inlet of the roots pump set is connected with the neutral beam vacuum chamber through a preceding stage valve and a pre-pumping valve, and an outlet of the roots pump set is connected with the mechanical pump set through the preceding stage valve. By adopting a multi-stage vacuum shielding technology and a step-by-step start-stop strategy, step-by-step transition from low vacuum to high vacuum and from high vacuum to low vacuum can be efficiently, stably and reliably realized, and an air extractor unit and a vacuum environment are protected from being polluted.

The invention discloses a power battery pole coiled material composite coating system and method based on plasma activation, and relates to the technical field of power battery pole material manufacturing. The unwinding device consists of an unwinding roller, a tension sensor and a speed regulator, and conveys the pole coiled material at constant tension and speed; the cavity is a sealed vacuum cavity, is provided with an electrode plate, a gas ingress pipe and a vacuum extraction opening, and is internally provided with a detector for monitoring a plasma state; the coating chamber comprises a first coating chamber, a second coating chamber and a transition vacuum cavity; a thickness gauge, a spectrograph and the like are used for monitoring film layer parameters; graded cooling is adopted, and the gas humidity is controlled; the coiled material winding module is used for maintaining tension stability and correcting deviation; and communicating with each module, adjusting parameters and generating a log. According to the invention, the activation consistency of the pole coiled material and the adhesion force of the film layer are improved, the thickness uniformity and density of the coating film are optimized, multi-parameter monitoring is perfected to find defects in time, the stress of the film layer is reduced by graded cooling, the performance and production efficiency of the pole material are guaranteed, and the manufacturing requirements of power batteries are met.

The invention relates to the technical field of solar cells, in particular to a high-uniformity large-size perovskite film annealing device which comprises a heating system, an adsorption system, an atmosphere control system, a heat preservation system, a data processing and control system and a supporting system. The heating system comprises a heating unit and a heat conduction unit, the heating unit is integrally electrically controlled to heat, an adsorption groove is formed in the plate face of the heating unit, the adsorption system enables a film layer base body to be attached to the heating unit through air suction of a vacuum pump so as to resist instant temperature difference warping, and the atmosphere control system comprises a furnace body with a gas pipeline and an atmosphere compensation base plate so as to regulate and control the atmosphere. According to the high-uniformity large-size perovskite film annealing device, uniform heating and precise atmosphere control of a film layer can be achieved, the quality and stability of a perovskite film are improved, the problems that existing annealing defects are many, and film forming uniformity is poor are solved, and the high-uniformity large-size perovskite film annealing device is suitable for large-scale production. The method is suitable for large-size film annealing.

The invention relates to the field of particle accelerators, in particular to an ultrahigh and extremely high vacuum acquisition system and method. The vacuum obtaining system comprises a vacuum obtaining device and a vacuum temperature control device, the vacuum obtaining device comprises a ceramic vacuum chamber, an interlayer vacuum chamber, a main pump chamber, a first vacuum pumping assembly and a second vacuum pumping assembly, the main vacuum chamber is formed in the ceramic vacuum chamber, and the ceramic vacuum chamber is arranged in the interlayer vacuum chamber; and an interlayer space is formed between the ceramic vacuum chamber and the interlayer vacuum chamber. The ceramic vacuum chamber is arranged in the interlayer vacuum chamber, the interlayer space is formed between the ceramic vacuum chamber and the interlayer vacuum chamber, and the interlayer vacuum chamber is heated through the heating element, so that the ceramic vacuum chamber is uniformly heated in a non-contact heat radiation uniform heating mode; the problem of thermal stress concentration caused by direct conduction heating of the ceramic vacuum chamber is thoroughly eliminated, leakage or fracture of the ceramic-metal joint caused by thermal stress is avoided, and the structural integrity of a heterogeneous material connecting area is ensured.

The application discloses a water-cooled sealing vacuum metal liquid refining system and relates to the technical field of metal refining. The system comprises a furnace body and a water-cooled sealing cover. An annular support flange is fixed to the outer wall of the furnace body. The water-cooled sealing cover comprises a shell and a water-cooled cavity formed in the shell. The axial section of the water-cooled cavity is in the shape of Chinese character 'ji' and covers the upper end opening of the furnace body and the outer circumferential wall of the upper part of the furnace body. The water-cooled sealing cover is provided with a water inlet and a water outlet which are connected with the water-cooled cavity. The bottom of the water-cooled sealing cover is placed on the support flange. The contact surface between the support flange and the water-cooled sealing cover is provided with a high-temperature-resistant sealing element. The water-cooled sealing cover is fastened by a quick connecting assembly. A water-cooled gas pipe is arranged in the water-cooled cavity and is immersed in cooling water. The outer end of the water-cooled gas pipe penetrates through the outer side wall of the water-cooled sealing cover and is connected with a vacuum-pumping assembly. The inner end of the water-cooled gas pipe is connected with the inner cavity of the furnace body. An inert gas supply assembly is connected with the inner cavity of the furnace body. The furnace body is used as a vacuum tank body. The water-cooled sealing cover is directly coupled with the furnace body. The target volume for vacuum pumping is greatly reduced.

The application relates to an integrated vacuum pump testing method and testing device, and relates to the technical field of vacuum pumps, and comprises the following steps: controlling a water inlet pipe ball valve and a water return pipe ball valve to be opened, and collecting a water pipe flow value; when the water pipe flow value is consistent with a reference flow value, controlling a power supply start button to be opened, and controlling a curve data collection device to collect a limit vacuum degree of a buffer tank in an empty state; when the limit vacuum degree reaches a planned vacuum degree, installing a test orifice plate with an initial aperture at an air inlet position of the buffer tank, and adjusting the aperture of the test orifice plate in different ways, controlling the curve data collection device to collect a vacuum pumping speed and working basic parameters of the measured pump; based on the vacuum pumping speed, the curve data collection device generates a pumping speed change curve, based on the working basic parameters, the basic parameter change curve is generated, and the pumping speed change curve and the basic parameter change curve are output. The application has the effect of improving the testing efficiency of the vacuum pump.

The invention provides wafer vacuum detection equipment, which comprises a vacuum cavity I, a vacuum cavity II and a vacuum valve group I. A carrying table I is arranged in the vacuum cavity I, is used for feeding and discharging transfer, and comprises a plurality of supporting tables which are stacked up and down, and the supporting tables are used for placing wafers; the vacuum valve group I is arranged between the vacuum cavity I and the vacuum cavity II and is used for communicating or isolating the vacuum cavity I and the vacuum cavity II; a detection module is arranged in the second vacuum cavity and comprises a second carrying table, a transplanting mechanism, a material taking mechanical arm and a detection mechanism, the second carrying table is used for positioning the wafer, the second carrying table is arranged at the output end of the transplanting mechanism and used for driving the second carrying table to move between the detection station and the material taking station, and the detection mechanism is arranged at the detection station and used for detecting the wafer. The material taking mechanical arm is used for conveying wafers. By arranging the small vacuum cavity for feeding and discharging transfer and reducing the size of the detection vacuum cavity, the vacuum pumping time can be greatly shortened, the detection efficiency is improved, and resources and the production cost are saved.

The application relates to the technical field of electroslag furnaces, in particular to an electroslag furnace. The electrode rod lifting device comprises a furnace body, an electrode rod, a crystallizer, a cooling mechanism and a vacuum pumping mechanism; the inside of the furnace body is formed with an accommodating cavity, the inside of the crystallizer is formed with a crystallization cavity, the bottom of the furnace body is detachably connected with the top of the crystallizer, so that the accommodating cavity and the crystallization cavity are communicated; the electrode rod is arranged in the accommodating cavity of the furnace body in a lifting mode, the bottom of the electrode rod is electrically connected with the consumable electrode, so as to drive the consumable electrode to gradually extend into the crystallization cavity; the cooling mechanism comprises cooling pipelines arranged on the electrode rod, the furnace body and the crystallizer and a circulating driving member, the circulating driving member is communicated with the cooling pipelines, and the vacuum pumping mechanism is communicated with the accommodating cavity. The electroslag furnace can accurately align the electrode rod with the crystallizer at all times, guarantees the quality of the metal ingot, realizes vacuum smelting, can pump out impurities after smelting is completed, and ensures environmental protection.

The utility model provides a gas pressure regulator gas tightness test device, relates to the pressure regulator gas tightness detection technology field, and comprises a test protection shell and a closed pressure detection mechanism, the inner side of the test protection shell is provided with the closed pressure detection mechanism, when in use, through the arrangement of a sealing assembly, the closed pressure detection mechanism can detect the gas tightness of the gas pressure regulator. A sealing rubber strip is clamped at the joint of the test protection shell and the sealing top shell, and is in threaded connection and fixation through fixing rings extending from the two sides, so that the airtightness in the airtightness detection process is further ensured to be complete, and when the pressure regulator is fixed inside, the airtightness of the pressure regulator can be detected by supplying gas for airtightness detection to the inside of the gas injection assembly. According to the invention, the air tightness of the pressure regulator is detected, and in the detection process, the vacuum air extraction assembly arranged at the rear side of the test protection shell drives the air extraction opening to completely extract the interior through the air pump, so that the interior of the test protection shell is in a vacuum state, and therefore, the pressure regulator can be ensured not to be influenced by the test environment in the air tightness test process.

The invention relates to a gas path system of a gallium nitride crystal growing furnace, which comprises a process gas component adjusting module communicated with the growing furnace, a vacuum pumping and pressure control module, a tail gas treatment module and an overpressure quick exhaust module, and a vacuum gauge P is arranged on the growing furnace. According to the method, the control precision of the gas phase component of the process gas and the process pressure is remarkably improved, so that the crystal can grow in a high-concentration ammonia gas environment, and meanwhile, the problem that the existing process is insufficient in high-concentration ammonia gas tail gas treatment capacity is solved, so that the production quality of the gallium nitride crystal is improved.

The utility model relates to the technical field of getter testing, in particular to an automatic cycle testing system for a getter pump. The system comprises a vacuum chamber, a vacuumizing system, a baking temperature control system, an activation power supply, a cooling device and an air supply system, wherein valves, instruments, a heating power supply, a cooling power supply and an activation power supply on a connecting pipeline are connected with a data acquisition system and an automatic control system; besides, the vacuum chamber is divided into a Pm chamber and a Pg chamber by an orifice plate, the Pm chamber is connected with an air supply system, a to-be-detected getter pump is arranged in the Pg chamber, a valve switch in the system is controlled through a data acquisition system and an automatic control system, and circulation of heating activation, low-pressure air chamber pressure adjustment, cooling and air suction test is automatically completed. Meanwhile, the pressure of the Pm chamber and the pressure of the Pg chamber are recorded, and the inspiration rate, the inspiration capacity and corresponding curves are automatically calculated. According to the detection system and method, automatic control of multi-cycle inspiration testing can be realized, and the testing efficiency and the testing accuracy are improved.

The invention provides a pouring mold for thermal battery shell processing, and belongs to the technical field of thermal battery processing. Comprising a mold body, a fixed mold body is arranged at the top end in the mold body, a movable mold body is arranged at the bottom end in the fixed mold body, pouring gates are formed in the bottom ends of the periphery of the fixed mold body, mold cavities are formed in the centers of the contact surfaces of the fixed mold body and the movable mold body, and exhaust grooves are formed in the four corners and the opposite sides of the outer sides of the two mold cavities; an auxiliary pouring assembly is arranged in the bottom end of the fixed mold and used for assisting in material pouring. A vacuum pumping assembly is arranged on the outer side of the auxiliary pouring assembly and is used for pumping gas in the cavity; a condensation assembly is arranged at the bottom end of the interior of the movable mold and used for cooling the movable mold. And the vacuum pumping system is communicated with the exhaust groove, gas in the cavity is pumped before pouring, bubble retention is reduced, and the compactness of the shell is improved.

The application provides a polydicyclopentadiene / glass fiber felt composite material and a preparation method thereof. The method comprises the following steps: step (1): laying a glass fiber felt on a glass plate, sequentially laying a release cloth, a flow guide net and a vacuum bag, and performing vacuum pumping and pressure maintaining; step (2): pouring a cyclic olefin liquid into the vacuum bag in step (1), performing stage temperature rising and curing, and releasing a polydicyclopentadiene / glass fiber felt composite material. The cyclic olefin liquid is configured as follows: A1, uniformly mixing 100 parts by mass of DCPD and 5-20 parts by mass of a TCPD system to prepare a mixed solution; wherein the TCPD system comprises 10wt% of TCPD and 90wt% of DCPD; A2, dissolving 0.02-0.06 parts by mass of a Grubbs second-generation catalyst and 0.002-0.006 parts by mass of a retarder in 1-2 parts by mass of a high-boiling-point silane coupling agent, and adding the mixture into the mixed solution in step A1 to prepare a liquid. The method adopts a vacuum-assisted resin infusion molding (VARI) technology, has the characteristics of simple operation and rapid reaction, and the obtained composite material has high mechanical properties.

The invention belongs to the field of flywheel energy storage devices, and particularly relates to a magnetic coupling transmission flywheel energy storage device and a working method thereof.The magnetic coupling transmission flywheel energy storage device comprises a motor shell and a flywheel shell, the top end of the motor shell is detachably and fixedly connected and communicated with the bottom end of the flywheel shell, and a flywheel energy storage assembly is installed between the motor shell and the flywheel shell through a magnetic coupling transmission assembly; the top of the motor shell is provided with an air blowing heat dissipation assembly, the flywheel shell is provided with a vacuumizing assembly and a flywheel cleaning assembly, and the motor shell is provided with an air exhaust assembly. The device has the beneficial effects that the device has the function of driving the flywheel to rotate and store energy through magnetic coupling transmission, meanwhile, after the device releases energy for one time, the motor can be conveniently and rapidly cooled, regular brushing and cleaning operation can be conveniently conducted on the surface of the flywheel, the service life of the device is prolonged, and the device is suitable for popularization.

The utility model relates to the technical field of vacuumizing devices, and discloses a catalyst vacuumizing device for an aromatic hydrocarbon combined workshop, which comprises a catalyst tank, and the outer wall of the catalyst tank is fixedly connected with a fixed pipeline. The catalyst vacuumizing device for the aromatic hydrocarbon combined workshop is provided with the filter screen frame, the filter screen frame is easy to disassemble and assemble, when a filter screen needs to be cleaned or replaced, an operator can quickly disassemble the filter screen frame, the filter screen is convenient to clean and maintain, and the filter screen and an activated carbon filter screen are combined for use, so that the catalyst vacuumizing device is convenient to use. According to the water ring vacuum pump, gas extracted from the catalyst tank can be subjected to dual purification, impurities such as solid particles and dust are intercepted by the filter screen, organic impurities, peculiar smell and the like in the gas are effectively adsorbed by the activated carbon filter screen, the purified gas enters the water ring vacuum pump, damage of the impurities to the pump body is reduced, and the service life of the water ring vacuum pump is prolonged; and the requirements of people are met.

This invention proposes an integrated vacuum pumping system for the exterior of a vacuum evaporation machine, comprising a coarse pumping pipe and a fine pumping pipe. A first three-way pipe and the fine pumping pipe are connected by a telescopic motor that drives the valve cover to rise and fall, enabling rapid switching between the coarse and fine pumping lines and avoiding vacuum fluctuations. Under the precise pressure control of the telescopic motor, the valve cover maintains uniform contact pressure on the sealing surface. The transition pipe directly connects the coarse and fine pumping pipes, eliminating flow channel redundancy in traditional multi-valve systems and reducing gas flow resistance. The telescopic motor is linked with a vacuum sensor to automatically switch the pumping mode based on the cavity pressure threshold, avoiding errors caused by manual intervention. The integrated three-way pipe reduces external connecting components, shrinks the equipment size, and lowers manufacturing costs and maintenance complexity.

The utility model discloses a vacuumizing oil steam diffusion prevention device, which relates to the technical field of vacuum coating and comprises a coating cabin, a sealing cabin cover arranged at the upper end of the coating cabin, an air exhaust pipeline connected onto the coating cabin, a vacuum pump connected onto the air exhaust pipeline, and an air exhaust component fixedly mounted in the coating cabin. The air exhaust assembly comprises an air exhaust opening fixedly formed in the coating cabin, a protruding pipe opening is fixedly formed in the middle of the bottom of the air exhaust opening, a flow guide cone is fixedly installed at the upper end of the protruding pipe opening, air exhaust holes are formed in the side wall of the protruding pipe opening, the bottom of the air exhaust opening is connected with an oil drainage pipeline, and an installation through hole is formed in the edge of the upper end of the air exhaust opening. A condensation mechanism is mounted at the upper end of the extraction opening. According to the vacuumizing oil vapor diffusion prevention device, the condensation mechanism can enable high-temperature oil molecules to be rapidly solidified on the surfaces of the heat conduction fins to restrain diffusion of the oil molecules, and the air exhaust assembly can conveniently discharge collected oil out of the coating cabin.

A food fermentation strain freeze-drying integrated device comprises a low-temperature premixing unit used for temporary storage and premixing of materials; the spray freezing unit comprises a spray freezing cavity, and the spray freezing cavity is provided with a material atomization spraying assembly and a freezing spraying assembly; the low-pressure buffering and collecting unit comprises a buffering cavity; the vacuum freeze drying unit comprises a vacuum freeze drying cavity; the environment adjusting unit comprises a vacuumizing system and a refrigerating system and is used for depressurizing and cooling the buffer cavity and the vacuum freeze drying cavity; and valves are connected between the spray freezing cavity and the buffer cavity as well as between the buffer cavity and the vacuum freeze drying cavity. The invention further relates to a strain high-keep-alive method which adopts the equipment, operation of a plurality of independent units can be integrated, the production cost is reduced, the transport pollution risk is completely eradicated, the strain survival rate in the strain powder processing process is effectively increased, and the method belongs to the field of food industrial processing equipment.

The application relates to a segmented integration method of a vacuum system, wherein a control console is integrated with vacuum units through a control bus to form an automatic vacuum control system, and the best cooperation between the vacuum units is realized. The control bus is integrated with vacuum stations to form a process analysis and control subsystem, automatic processing of a workpiece vacuum process and process record of each workpiece can be realized. Through big data statistics and analysis of the process, automatic judgment of the online quality qualification level of the workpiece can be realized, and workpiece abnormal processing alarm and characteristic data result report are given, and automatic vacuum operation without people is completed. The application improves equipment utilization and production efficiency, and reduces energy consumption and operation cost.

The application discloses a paper pulp molded product production line. The paper pulp molded product production line comprises a forming device, a drying device and a cutting device. The drying device comprises a second upper mold, a second lower mold, a second lifting driving assembly, a heating assembly and a second vacuum pumping assembly. The second vacuum pumping assembly sucks air into the second cavity through the second channel structure, so that water vapor flows away from the second channel structure, thereby reducing the possibility of fiber debris carried by water vapor diffused in the air adhering to the dry embryo, improving product quality, and reducing the possibility of carbon deposition caused by the fiber debris adhered to the second upper mold and the second lower mold. At the same time, by setting the sealing structure, the sealing property of the second cavity is improved, the pressure of the water vapor passing through the second channel structure is improved, the fiber adhered in the second channel structure is carried away, the cleanliness of the second channel structure is maintained, and the possibility of carbon deposition in the second channel structure is reduced.

The utility model discloses a vacuum press-fit mechanism for a liquid crystal display panel, which comprises a lower press-fit unit, an upper press-fit unit and a first linear driving module, and the upper press-fit unit and the first linear driving module are respectively connected onto a support frame. The lower pressing unit is located below the upper pressing unit and movably connected to the first linear driving module. The upper pressing unit comprises a first lifting module, a second lifting module, an upper pressing platform, a main pressing platform and a vacuum exhaust pipe. Wherein the first lifting module is used for driving the second lifting module and the upper pressing platform to ascend and descend, so that the upper pressing platform and a lower pressing platform in the lower pressing unit are attached in a hard-to-hard mode to form a closed cavity, meanwhile, the second lifting module can independently drive the main pressing platform to ascend and descend, the pressure applied to a base plate by the main pressing platform can be adjusted, and the pressure applied to the base plate by the main pressing platform can be adjusted. And the laminating pressure during vacuum pressure-maintaining laminating is adjusted, so that the situation that the upper substrate and the lower substrate are not tightly laminated due to too small pressure is avoided, and the situation that the substrates are damaged due to too large pressure is also avoided.