45results about How to "Improve vacuum sealing performance" patented technology

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 invention discloses a socket connector, a vacuum electronic device, a plug connector and a connector assembly. The socket connector includes a housing, a plurality of ceramic insulators, and a plurality of conductive terminals. The housing is made of a metal material and provided with a plurality of first through holes. The ceramic insulators respectively pass through the first through-holes,and both ends of each of the ceramic insulators extend from the first through-holes, the periphery of each of the ceramic insulators is sealingly connected to the first through-holes, and a second through-hole is provided in each of the ceramic insulators. The conductive terminals respectively pass through the second through-hole, and both ends of each of the conductive terminals extend from bothends of a respective ceramic insulator. The high vacuum sealing performance and high voltage insulation performance of the conductive terminals can be ensured. Through the integrated design, it is convenient to connect multiple conductive terminals at the same time, thus realizing the integration and miniaturization of ceramic lead terminals and reducing the cost.

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 belongs to a preparation technology of tritium labeled compounds, and in particular relates to a tritium labeling reaction device. Reaction flasks, three uranium powder bottles and a vacuum pump are connected into a closed system through metal pipes and valves, and are connected to a main pipeline formed by the metal pipes, wherein the three uranium powder bottles are a tritium storage uranium powder bottle, a tritium recovery uranium powder bottle and a spare uranium powder bottle respectively, are arranged in parallel, are connected with the main pipeline, and are provided with a control valve respectively; a surge flask and a cold trap are arranged on the metal pipe, connected with the vacuum pump, of the main pipeline. The device is completely connected through components such as the metal pipes and the vales in clamping and sleeving ways, so that the vacuum tightness of the system is ensured, and the tritium labeling efficiency, stability and safety are improved.

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 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 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 discloses a lead-free solder for quartz glass sealing. The matrix of the lead-free solder is tin, and the atomic percentage components of Ti and O introduced are Ti: 0.2% to 6%, O: 0.05% to 5.9%, wherein the atomic ratio of Ti and O is greater than 1, and the lead-free solder The mass percentage of impurities in is less than or equal to 0.1%. The soldering temperature range of the lead-free solder is 600℃~800℃, and the welding vacuum degree is less than or equal to 5×10 ‑3 Pa. The lead-free solder for quartz glass sealing of the present invention does not need flux during the sealing process of quartz glass, simplifies the sealing process of quartz glass, and improves the vacuum sealing reliability of quartz glass sealing. The lead-free solder can be widely used in quartz glass sealing, and can also be used in quartz glass, the softening temperature of which is not lower than 800 ℃ 2 Mutual welding of glass, titanium, and metal with titanium coating on the surface as the main component. It is especially suitable for preparing pulsed xenon lamps, which can significantly improve the service life and working reliability of the pulsed xenon lamps.

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.