53results about How to "Improve vacuum sealing performance" patented technology

The invention discloses a sealing device for transmission input shafts in a vacuum environment and a using method of the sealing device. The sealing device comprises a transmission input shaft, elastic shaft check rings, magnetic liquids, magnetic poles, magnets, O-shaped rings, special-made gaskets, outer casings, angular contact ball bearings, pairing ferrules, locking blocks, set screws with flat points, end caps, hexagon socket head cap screws, glue, lock nuts, V-shaped oil seals, a four-way connection block, a water outlet connector, a water inlet connector, a water delaying baffle block, outer water channel ferrule pieces and oil, wherein an oil seal limiting groove, check ring shaft grooves, magnetic liquid chambers, shaft shoulders, locking threads and equal division shaft kerfs are arranged on the transmission input shaft. According to the sealing device, novel magnetic fluid materials are applied for vacuum seal, a water cooling system is applied for cooling, by means of the sealing device, thermal damage is reduced in thermal field environments, magnetic effects of magnetism work pieces are improved, the vacuum sealing performance is good, and the sealing device can be used in vacuum sealing devices with higher vacuum requirements.

The invention discloses a vacuum high-temperature hot pressing molding machine. The vacuum high-temperature hot pressing molding machine comprises a rack (1) for wholly supporting a molding machine, an upper heat-preservation cold-state vacuum cover (2), a lower heat-preservation cold-state vacuum cover (4) corresponding to the upper heat-preservation cold-state vacuum cover (2), and a vacuumizing device (6) connected with the upper heat-preservation cold-state vacuum cover (2) or the lower heat-preservation cold-state vacuum cover (4), wherein the upper heat-preservation cold-state vacuum cover (2) can move up and down and is internally provided with an upper heating plate (3); the lower heat-preservation cold-state vacuum cover (4) can move front and back and up and down; and the lower heat-preservation cold-state vacuum cover (4) is internally provided with a lower heating plate (5) corresponding to the upper heating plate (3). The vacuum high-temperature hot pressing molding machine is simple in structure, reasonable in design, convenient to use, good in vacuum sealing effect, high in molding temperature, good in molding effect and low in heat dissipation.

The invention discloses a novel vacuum drying oven. The novel vacuum drying oven comprises an oven body, a drying chamber, a hot air circulation system and a vacuum unit, wherein a vertical partition is arranged in the drying chamber and divides the drying chamber into a storage cavity and an air outlet cavity; heating tubes are distributed at the inner bottom of the storage cavity; heating plates are arranged on two side walls of the storage cavity; the hot air circulation system comprises a magnetic fluid circulating fan mounted on the top wall of the air outlet cavity; the rotating shaft of the fan penetrates the top wall; the air outlet part of the fan is located in the air outlet cavity; an air inlet is formed in the vertical partition and corresponds to the air outlet part; the storage cavity and the air outlet cavity are communicated through the air inlet. Therefore, the interior of the drying chamber is designed into a unique air duct structure, and through cooperation of the magnetic fluid circulating fan, air is uniformly circulated, and the temperature distribution uniformity in the drying chamber is extremely good; a cooling water path for cooling down a magnetic fluid can cool down the magnetic fluid in real time, so that the vacuum leakproofness, the service performance and the safety performance of the drying oven are better.

The present invention provides a simple and practical wafer support member that enables highly reliable electrical connection between a conductive layer formed on a placement surface and a power supply terminal on the atmosphere side while maintaining vacuum sealing. This wafer support member includes: a plate-shaped ceramic body having one main surface as a placement surface on which a wafer is placed, and a through hole penetrating from the one main surface to the other main surface; and a ceramic body provided on the placement surface. a conductive layer; a connecting conductive layer connected to the conductive layer and provided on the inner surface of the through hole; and a buried conductive layer connected to the connecting conductive layer and embedded in the plate-shaped ceramic body; and having one end and another One end is connected to the buried conductive layer in the vicinity of the one end, and the other end protrudes from the other main surface of the ceramic body, and is provided at a position away from the through hole of the plate-shaped ceramic body.

The present invention relates to a gas-phase deposition film-plating and vacuum heat treatment on-line combined composite deposition equipment, including deposition chamber, heat treatment chamber, glove box and transition chamber. The transition chamber is made into a stainless steel cylindrical structure, and is set between the deposition chamber, heat treatment chamber and glove box and is connected with the deposition chamber, heat treatment chamber and glove box by means of stainless steel pipeline, and on the stainless steel pipeline a stainless steel high vacuum insertion plate valve is set. Said transition chamber also is equipped with upper cover with observation window, and its side wall is equipped with a transfer bar and a robot, its heat treatment chamber also is equipped with an observation window.

The invention discloses an electrodeless ultraviolet germicidal lamp which comprises a frame-shaped lamp tube, two power couplers and a high-frequency excitation source; a heat radiator comprises a base and a top cover and the upper end of the base is combined together with the top cover to form a complete circle; a magnetic ring comprises an upper semicycle and a lower semicycle which can be combined into a complete circle; the magnetic ring is arranged in the heat radiator and fixed through buckles on the base and the top cover of the heat radiator; a coil is wound at the bottom of the lower semi-circular magnetic ring, and the number of turns of the coil is set according to the demand of output powder; output ends of the high-frequency excitation source are respectively connected at the both ends of the coil, input ends of the high-frequency excitation source are connected with a power supply; blind pipes at the both ends of the lamp tube are loaded with amalgam, the lamp tube is filled with inert gas and the two short sides of the lamp tube are clipped in the upper semi-circular magnetic ring and the lower semi-circular magnetic ring of the power couplers. The invention solves the contradiction which cannot be solved by the electrode ultraviolet germicidal lamp and has the advantages of high efficiency, high power, wide power range, long service life, instant start, environmental-protection, wide applicable temperature range, simple manufacturing process, lower processing cost, and the like.

The invention provides an oxygen-free copper composite welding method by combining low pressure diffusion welding with brazing compound welding. The oxygen-free copper composite welding method comprises the steps: step A, preprocessing multiple oxygen-free copper parts to be welded to remove the oxide film on the surfaces of the oxygen-free copper parts; step B, assembling the multiple oxygen-free copper parts, fixing the relative position of each oxygen-free copper part to ensure close contact of welding faces, and carrying out low pressure diffusion welding on the welding faces of the oxygen-free copper parts; step C, placing electric vacuum brazing filler metal in the welding holes preset in the edges of the welding faces and brazing the multiple oxygen-free copper parts. A composite welding head formed through the oxygen-free copper composite welding method is bonded tightly, the precision of welding is high, the vacuum leakproofness is good, and the joint tensile strength is 200-300 MPa, being close to or even higher than the oxygen-free copper base metal strength.

The invention discloses machining equipment of a semiconductor or a photovoltaic material. The machining equipment comprises a furnace body and a furnace door; an electrode structure is arranged on the furnace door, an adjusting device is arranged on the furnace door and comprises an arc contact surface and a support block; the arc contact surface is arranged between the support block and the furnace door, and a structure matched with the arc contact surface is arranged at a corresponding location of the support block or the furnace body. The invention provides the machining equipment of the semiconductor or photovoltaic material, and the machining equipment is simple in structure, reasonable in electrode mechanism design, capable of realizing longitudinal arrangement of a graphite boat piece due to the perfect combination of the furnace door, and capable of quickly adjusting the furnace door to reach good sealing effect.

The invention relates to the technical field of glass deep-processing, and particularly relates to energy-saving vacuum tempering glass and a manufacturing technology of the energy-saving vacuum tempering glass. The energy-saving vacuum tempering glass comprises glass; a vacuum layer A is arranged between the front glass and the back glass; the end surfaces of the front glass and the back glass are inwards sequentially provided with flexible protective glue, low-temperature glass powder, high-temperature vacuum glass cement, vacuum mud and a protective layers; supporting balls are arranged in the vacuum layer A; the inner surfaces of the front glass and the back glass are provided with at least one layer of electric resistance wires; plastic cement protective strips and vacuumizing nozzles are arranged on the end surfaces of the front glass and the back glass; and the inner layer of the front glass is composited with a transparent anti-explosion film. The energy-saving vacuum tempering glass can be locally heated and has the obvious effect of being firm, breakage-proof, energy-saving and free of frosting. The energy-saving vacuum tempering glass has good vacuum sealing effect, excellent heat preservation and insulation effects and strong practicability and is low in cost. The energy-saving vacuum tempering glass is widely applied to fields such as houses, factories, protective cabinets, refrigerating chambers, automobiles, trains and greenhouses and has good market application prospect.

The invention discloses a three-dimensional vacuum cupping device, and aims at providing a three-dimensional cupping device having a mutually cooperative structure, being capable of practical and operating, ensuring that limbs enter and exit a housing and a sealing ring without limit and abrasion, can realize reliable vacuum sealing to truncus and limbs, being convenient for use and enabling the easily-damaged sealing ring to be durable. The three-dimensional vacuum cupping device comprises a shell, a loop sealing ring, an exhaust nozzle, a soft tube and a vacuum pump, wherein the inner side of the loop sealing ring on the outer side of the port of the shell is provided with a caliber-variable support ring. The three-dimensional vacuum cupping device is suitable for treating rare and stubborn diseases such as muscularconstricture of limb joints, finger stiffness, limb cold, numbness of extremities, amyotrophy, diabetic foot, elbow arm pain and curl, capillary collapse, blood vessel disappearance and the like, and obtains a special and remarkable treatment effect which is not reported in the traditional cupping device. The treatment and the physical therapy health care function on other diseases are waiting for further experimenting and developing.

A liquid crystal picture screen provided with a backlight system which comprises at least one gas discharge lamp and at least one capacitive coupling system with a dielectric material with the composition[A'a1<n1+>A''a2<n2+> . . . A<n'>an<nn+>] [B'b1<m1+>B''b2<m2+> . . . B<m'>bm<mn+>]O3, wherein the cations A'a1<n1+>A''a2<n2+> . . . A<n'>an<nn+> comprise at least one or several of the cations chosen from the group of Ba<2+>, Pb<2+>, Sr<2+> and Ca<2+>, as well as possibly one or several of the cations chosen from the group of Cs<1+>, Rb<1+>, Tl<1+>, K<1+>, Pb<2+>, Ag<1+>, Sr<2+>, Na<1+>, Bi<3+>, La<3+>, Mg<2+>, Zn<2+>, Ca<2+>, Ce<3+>, Cd<2+>, Pr<3+>, Nd<3+>, Eu<3+>, Gd<3+> and Sm<3+>, andthe cations B'b1<m1+>B''b2<m2+> . . . B<m'>bm<mn+> comprise at least one or several of the cations chosen from the group of Ti<4+>, Zr<4+> and Sn<4+> as well as possibly one or several of the cations chosen from the group of Mn<2+>, Cr<2+>, In<3+>, V<2+>, Fe<2+>, Pb<4+>, Li<1+>, Co<2+>, Sc<3+>, Zn<2+>, Cu<2+>, U<6+>, Mg<2+>, Hf<4+>, Mo<3+>, Ni<2+>, Nb<4+>, Ti<3+>, W<4+>, Mo<4+>, Fe<3+>, Mn<3+>, V<3+>, Re<4+>, Ir<4+>, Ru<4+>, W<5+>, Ta<5+>, Cr<3+>, Ga<3+>, Co<3+>, Mo<5+>, Ni<3+>, Sb<5+>, W<6+>, Nb<5+>, Mo<6+>, Fe<4+>, Re<5+>, V<4+>, Te<6+>, V<5+>, Cu<3+>, Al<3+>, Mn<4+>, Ge<4+>, Y<3+>, Gd<3+>, Dy<3+>, Ho<3+>, Er<3+>, Yb<3+>, Tb<3+> and Lu<3+>, with0.98<=A1+a2+ . . . +an<=1.02,0.98<=B1+b2+ . . . +bm<=1.02,a1+a2+ . . . +an+b1+b2+ . . . +bm<=2,a1*n<1>+a2*n<2>+ . . . +an*n<n>+b1*m<1>+b2*m<2>+ . . . +bm*m<m><=6.

The invention discloses a vacuum high-temperature hot pressing molding machine. The vacuum high-temperature hot pressing molding machine comprises a rack (1) for wholly supporting a molding machine, an upper heat-preservation cold-state vacuum cover (2), a lower heat-preservation cold-state vacuum cover (4) corresponding to the upper heat-preservation cold-state vacuum cover (2), and a vacuumizing device (6) connected with the upper heat-preservation cold-state vacuum cover (2) or the lower heat-preservation cold-state vacuum cover (4), wherein the upper heat-preservation cold-state vacuum cover (2) can move up and down and is internally provided with an upper heating plate (3); the lower heat-preservation cold-state vacuum cover (4) can move front and back and up and down; and the lower heat-preservation cold-state vacuum cover (4) is internally provided with a lower heating plate (5) corresponding to the upper heating plate (3). The vacuum high-temperature hot pressing molding machine is simple in structure, reasonable in design, convenient to use, good in vacuum sealing effect, high in molding temperature, good in molding effect and low in heat dissipation.

The invention discloses a rolling type vacuum packaging machine, and belongs to the field of vacuum packaging machines, the rolling type vacuum packaging machine comprises an equipment main body and a plurality of packaging bags, two electric lifting plates are fixedly mounted on the equipment main body, a vacuum cover is fixedly mounted between the two electric lifting plates, a gas transmission assembly is arranged on the vacuum cover, and the gas transmission assembly is fixedly mounted on the equipment main body. A vacuum cover is arranged on the equipment main body, a hot pressing assembly is arranged in the vacuum cover, a detection assembly is arranged in the vacuum cover, a conveying belt is mounted on the equipment main body through a conveying assembly, a bearing assembly is arranged on the conveying belt, and the hot pressing assembly comprises two partition plates fixedly mounted in the vacuum cover. Uniform detection of the sealing performance of the left side and the right side of the packaging bag can be achieved, the effect of detecting the overall sealing performance of the packaging bag is effectively improved, and the timeliness and the sensitivity of the helium detector for detecting the sealing performance of the packaging bag can be effectively improved through the air inducing component.

The invention belongs to the field of magnetic confinement fusion (MCF) technologies, and particularly relates to an ultrahigh vacuum sealing flange structure for a non-circular channel of a large Tokamak vacuum chamber. The structure comprises a concave flange, a convex flange and a connecting pipe. Two matched 90-degree sealing steps are machined on the inner sides of the opposite end faces of the concave flange and the convex flange, and a copper wire ring is placed between the two sealing steps, so that a gap is reserved between the concave flange and the convex flange in the axial direction; and the concave flange and the convex flange are connected through a double-end threaded pin or a double-end stud. By means of the structural mode that the oxygen-free copper wire is compressed through the 90-degree sealing steps, the ultrahigh vacuum sealing requirements of non-circular channel window flanges of different shapes can be met, and the machining and maintaining difficulty of thesealing face of a non-circular window is reduced.

The utility model belongs to the field of vacuum packaging machines, and provides an automatic vacuum packaging machine which comprises a body, a cover body and a sealing assembly. Wherein the body forms a packaging cavity with an opening; the cover body is rotationally connected to the body through a supporting rod and used for sealing the opening of the packaging cavity. The first magnetic single body is connected to the body and arranged around the opening edge of the packaging cavity, the second magnetic single body is connected to the cover body and used for being in mutual magnetic attraction with the first magnetic single body, and the first magnetic single body and the second magnetic single body are magnetic steel capable of generating magnetism after being powered on. The sealing assembly further comprises a power supply element used for being electrically connected with the first magnetic single body and the second magnetic single body.

The invention discloses semiconductor processing equipment, which comprises a furnace body and a furnace door. An electrode structure is arranged on the furnace door, and an adjustment structure is arranged on the furnace door. It is connected with the furnace door through a knob; the axial direction of the adjustment device body is non-parallel to the axial direction of the knob; the invention provides a simple structure, reasonable design of the electrode mechanism, and perfect combination with the furnace door to realize the vertical placement of the graphite boat , and can quickly adjust the furnace door to achieve semiconductor processing equipment with good sealing effect.

The invention relates to a low-loss, high-vacuum sealed and heat-insulated transmission window for the millimeter wave frequency band, comprising a multi-layer dielectric window and a sealing upper flange and a sealing lower flange respectively installed on the upper and lower sides of the edge of the multi-layer dielectric window; The layered dielectric window includes a first tetrafluoro layer, a quartz layer, a second tetrafluoro layer and a thermal insulation layer arranged in sequence from outside to inside. The invention can not only effectively reduce the transmission reflection loss of electromagnetic wave signals, improve the problem of a large number of interference bands in the existing window, but also greatly improve the vacuum sealing performance, and solve the problem of limited use of the sealed wave-transmissive window of the traditional cryogenic receiver / superconducting receiver , and has a good heat insulation effect, effectively reducing heat radiation.

The utility model discloses a high-power waveguide sealing connection structure for an electron accelerator, which comprises a front straight waveguide, a rear straight waveguide, a flat flange, a double-groove type flange and a metal gasket, and the corresponding end faces of the front straight waveguide and the rear straight waveguide are respectively connected with the flat flange and the double-groove type flange. The flat flange and the double-groove type flange are connected with each other through respective sealing end surfaces; an annular stepped groove is formed in the sealing end face of the double-groove type flange, surrounding edges are arranged inside and outside the stepped groove, the stepped groove comprises a positioning groove and an auxiliary groove, the metal gasket is provided with a protruding annular positioning frame, the metal gasket is arranged between the flat flange and the double-groove type flange in a cushioned mode, and the positioning frame is connected with the positioning groove in a matched mode. According to the utility model, the sealing problem of high-power waveguide installation is solved, good electric contact of the butt joint plane of the two waveguide metal flanges during high-power microwave transmission operation is realized, high-power microwaves are prevented from escaping, vacuum in the waveguide is ensured, and stable transmission of the high-power microwaves is ensured.

The present invention relates to a mold vacuum sealing system and sealing method, including a pressure sensor, a vacuum oil cylinder, a control system, a vacuum pipeline and a vacuum pump; the pressure sensor is arranged in the mold cavity of the mold, and is used to collect the vacuum pressure value in the mold cavity of the mold, and feed it back to the control system; the vacuum oil cylinder is arranged at the junction of the mold cavity and the air path, and is used to control the connection state of the mold cavity and the air path; the control system is arranged outside the mold, one end of the control system is connected to the pressure sensor, and the other end is connected to the vacuum oil cylinder, and is used to receive the vacuum pressure value collected by the pressure sensor, and control the opening and closing of the vacuum oil cylinder. The present invention provides a mold vacuum sealing system and sealing method for extracting vacuum from the mold and maintaining the vacuum in the mold cavity. The pressure sensor is used to detect and control the action of the vacuum oil cylinder, and the vacuum degree in the mold cavity can be accurately controlled to improve the vacuum sealing performance in the mold cavity.

The invention discloses a three-dimensional vacuum cupping device, and aims at providing a three-dimensional cupping device having a mutually cooperative structure, being capable of practical and operating, ensuring that limbs enter and exit a housing and a sealing ring without limit and abrasion, can realize reliable vacuum sealing to truncus and limbs, being convenient for use and enabling the easily-damaged sealing ring to be durable. The three-dimensional vacuum cupping device comprises a shell, a loop sealing ring, an exhaust nozzle, a soft tube and a vacuum pump, wherein the inner side of the loop sealing ring on the outer side of the port of the shell is provided with a caliber-variable support ring. The three-dimensional vacuum cupping device is suitable for treating rare and stubborn diseases such as muscularconstricture of limb joints, finger stiffness, limb cold, numbness of extremities, amyotrophy, diabetic foot, elbow arm pain and curl, capillary collapse, blood vessel disappearance and the like, and obtains a special and remarkable treatment effect which is not reported in the traditional cupping device. The treatment and the physical therapy health care function on other diseases are waiting for further experimenting and developing.

The embodiment of the invention provides a photomask suction tool which comprises an adsorption assembly and a control assembly, and the control assembly is coupled with the adsorption assembly and is suitable for responding to an adsorption control signal and sucking gas in the adsorption assembly to form a negative pressure environment; the adsorption assembly is suitable for adsorbing the photomask in a negative pressure environment. By the adoption of the photomask suction tool, the taking-out efficiency of the photomask can be improved, and the photomask or other parts can be prevented from being damaged.

The invention discloses a vacuum gas distribution disc with high sealing performance and adjustable pumping speed. The gas distribution disc comprises a vacuum gas distribution disc body, wherein thevacuum gas distribution disc body comprises a central shaft, a base plate, a lower gas distribution disc, an intermediate gas distribution disc, an upper gas distribution disc, a deflation seat and agas suction disc. The upper side of the central shaft is fixedly connected to the base plate, the upper side of the base plate is movably connected to the lower gas distribution disc, and the upper side of the lower gas distribution disc is provided with the intermediate gas distribution disc. The upper side of the intermediate gas distribution disc is fixedly provided with the upper gas distribution disc, and the upper side of the upper gas distribution disc is connected to the deflation seat in the detachable mode. The upper side of the deflation seat is movably connected to the gas suctiondisc, and the outside of the gas suction disc is fixedly connected with a speed regulation mechanism. The vacuum gas distribution disc is provided with a sealing sleeve. In the gas pumping process ofthe gas suction disc, the sealing sleeve on the outside can prevent external gas from entering the gas suction disc. The sealing sleeve is designed into a wave structure and can be changed with vertical movement of a piston in the gas suction disc, so that the sealing effect can be improved.

The invention discloses an antibacterial composite film used for vacuum packing of household articles and a preparation method thereof. The composite film consists of a biaxially oriented polyamide film outer layer, a coating adhesion layer, and an antibacterial heat sealing layer. The preparation method comprises the following steps of: performing extrusion by using a three-layer co-extruder to obtain the antibacterial heat sealing layer; printing the outer film; and compounding the outer layer and the antibacterial heat sealing layer by using an extrusion compounding machine. The antibacterial composite film has excellent puncture resistance, compression strength and sealing property, good vacuum effect and antibacterial effect, and can used for storing the household articles and other antibacterial products.

The invention relates to a non-magnetic RF signal connector for vacuum sealing. The non-magnetic RF signal connector for vacuum sealing comprises a conductive element and a sealing device. The sealing device comprises the sealing of the conductive element. A sealing member body (4) radially passes through a brass assembly body (9) and is connected with a clamping ring (6), an O-shaped ring (7) and a locking nut (8) to be the sealing device which can be movably dismounted integratedly. The sealing device comprises the sealing of the conductive element and the sealing of a vacuum chamber outer wall (1). The sealing of the conductive element is achieved through a contact hole (12) arranged on the sealing member body (4). A sealant (10) is pasted in the contact hole (12). Through two modes of sealing, the vacuum sealing effect is good, the vacuum leak rate is smaller than 1.0*10<-10>Pa.m3 / s, and the non-magnetic RF signal connector has the advantages of simple integrated design structure, low manufacturing cost, and convenient manufacture.

The invention provides an oxygen-free copper composite welding method by combining low pressure diffusion welding with brazing compound welding. The oxygen-free copper composite welding method comprises the steps: step A, preprocessing multiple oxygen-free copper parts to be welded to remove the oxide film on the surfaces of the oxygen-free copper parts; step B, assembling the multiple oxygen-free copper parts, fixing the relative position of each oxygen-free copper part to ensure close contact of welding faces, and carrying out low pressure diffusion welding on the welding faces of the oxygen-free copper parts; step C, placing electric vacuum brazing filler metal in the welding holes preset in the edges of the welding faces and brazing the multiple oxygen-free copper parts. A composite welding head formed through the oxygen-free copper composite welding method is bonded tightly, the precision of welding is high, the vacuum leakproofness is good, and the joint tensile strength is 200-300 MPa, being close to or even higher than the oxygen-free copper base metal strength.

The invention discloses a skid-mounted rocket tank pressure annunciator flight vacuum environment simulator which is composed of a vacuum chamber door, a vacuum chamber, a vacuum gauge, a candlestick, a vacuum pump, a platform dolly and the like. The simulator is used for an upper stage rocket tank pressure annunciator and simulating a vacuum condition for the upper stage rocket tank pressure annunciator operating outside the earth's atmosphere. According to the invention, circuit insulation and sealing problems are solved. When the simulator operates, vacuum degree inside the vacuum chamber is better than 1 Pa. The pressure annunciator has a simple installation structure and is convenient to dismount and maintain. Vacuum cement and aluminium bars are used for sealing of pressure annunciator cables passing through the wall of the vacuum chamber. The structure is simple and easy to realize and is good in vacuum seal effect and low in cost. By integrating the vacuum chamber and the vacuum pump into one platform dolly, the structure of the system is compact and the vacuum-pumping effect of the vacuum chamber is enhanced. In addition, the integral body is convenient to move, and maintainability of the system is improved.