14results about How to "Guaranteed vacuum environment" patented technology

The utility model discloses a dry filter of a vacuum degassing furnace, which comprises a filter body and a filter body support used for supporting the filter body, the filter body is provided with an air inlet and an air outlet, and filter elements arranged in an array are arranged in a cavity of the filter body; a filter cover is arranged at the top of the filter body, a vent hole is formed in the filter cover, and a pulse valve is connected to the vent hole. The dry type filter of the vacuum degassing furnace can adsorb solid particle pollutants in air flow, ensures the vacuum environment of a smelting chamber, and can deposit, sweep and discharge the adsorbed particle pollutants in real time. The filtering device has a good filtering effect, and can ensure that the filtering effect is stable and reliable after long-time work.

This invention relates to the field of die-casting mold technology and discloses a die-casting mold for aluminum alloy forming, comprising a moving mold and a fixed mold, and further comprising: a pre-vacuuming mechanism, fixedly installed inside the fixed mold, the pre-vacuuming mechanism including a sealing element and a pre-vacuuming channel communicating with the sealing element, and a slot corresponding to the sealing element on the moving mold; a vacuuming mechanism, including a fixed mold vacuuming component fixed on the fixed mold and a moving mold vacuuming component fixed on the moving mold; and a feeding assembly, fixedly installed on the side of the fixed mold away from the moving mold. This die-casting mold for aluminum alloy forming, by setting the pre-vacuuming mechanism and the vacuuming mechanism, initiates pre-vacuuming during the mold closing process, utilizing the dynamic stage of the gradually decreasing cavity volume to expel most of the gas in advance; a second vacuuming is performed after mold closing to further extract residual gas. The synergistic effect of the two vacuuming processes effectively reduces the initial gas content in the cavity.

The invention relates to the field of dichloro pinacolone desolventizing processing, in particular to a dichloro pinacolone desolventizing tower device which comprises a desolventizing tower, a feeding pipe is connected to the upper portion of the desolventizing tower in a penetrating mode, and a discharging pipe is connected to the lower portion of the desolventizing tower in a penetrating mode. According to the invention, before desolventizing processing, when dichloropinacolone is injected into the desolventizing tower for vacuum extraction, the dichloropinacolone is stirred by a stirring rod at the moment, so that residual air in the dichloropinacolone can be evacuated, the vacuum environment in the desolventizing tower is ensured, and the desolventizing efficiency is improved. At the moment, the heat medium is conveyed into the desolventizing tower through the spiral pipe to be heated, due to the special conveying path of the spiral pipe, it can be guaranteed that dichloropinacolone is evenly heated, meanwhile, the passing time of the heat medium can be prolonged, and therefore the heat transfer efficiency is improved; the heating efficiency is further improved, and the desolventizing efficiency and quality of the dichloropinacolone can be improved through the mode.

The present application discloses a method for preparing a tin-based oxyfluoride compound, comprising the following steps: S1: mixing raw materials SnO, SnF2, TiO2 and Nb2O5, adding ethanol or deionized water, and grinding evenly to obtain a raw material mixture; S2: adding the raw material mixture to a quartz glass tube containing a corundum tube, placing the raw material mixture in the corundum tube, sealing the quartz glass tube, and then placing the sealed quartz glass tube in a muffle furnace at 500-800°C for calcination for 5-10 hours; S3: subjecting the product of step S2 to molten salt treatment to obtain the tin-based oxyfluoride compound. The tin-based oxyfluoride compound material synthesized by the method of the embodiment of the present invention has fewer defects and improved crystallinity, which effectively improves its photocatalytic reaction activity.

The invention discloses an ion beam processing test electric tilting sample table and a use method thereof.The ion beam processing test electric tilting sample table comprises a main installation assembly, an auxiliary installation assembly is arranged on the main installation assembly, an angle control assembly is arranged on the auxiliary installation assembly, and a connecting assembly is arranged at the output end of the angle control assembly; a sample storage assembly is arranged on the connecting assembly, a sample fixing assembly is arranged on the sample storage assembly, an auxiliary pressing assembly is arranged above the sample fixing assembly, an insulating assembly is arranged on the main mounting assembly, and an electrode is arranged above the insulating assembly. The electric tilting sample table has the beneficial effects that in the aspects of FIB fixed-point and fixed-orientation processing of a sample and FIB and TKD analysis combination, various sample processing modes can be realized, links such as vacuum breaking delivery and sample table replacement are avoided, the vacuum environment is ensured to the maximum extent, meanwhile, the sample is convenient to clamp, and damage to the sample is avoided.

The embodiment of the invention provides a conversion device and wafer detection equipment. The conversion device comprises a transfer part and a conversion mechanism, the transfer part comprises a channel extending in the first direction, a first opening and a second opening, the first opening and the second opening are arranged at an interval in the first direction, the first opening is used for communicating the channel with a first cavity located outside the channel, and the second opening is used for communicating the channel with a vacuum cavity located outside the channel; the switching mechanism comprises a tray assembly, the tray assembly comprises a wafer tray, the wafer tray is connected with the inner wall face of the channel in a sealed mode, and the wafer tray is movably arranged between the first opening and the second opening in the first direction so that a wafer can be conveyed among the first cavity, the vacuum cavity and the wafer tray through the first opening and the second opening. The wafer tray is in sealed connection with the inner wall surface of the channel so as to reduce gas in the first chamber entering the vacuum chamber from the channel through the second opening, and the wafer transfer efficiency is improved.

Relates to an ice residue continuous collecting and conveying device in the technical field of road surface deicing and comprises a collecting box, and the upper portion of the collecting box is connected with a vacuum suction nozzle and a vacuum pump through a vacuum pipe and an exhaust pipe respectively. A downward outlet pipe is arranged at the bottom end of the collecting box, and a gate valve structure is mounted on the outlet pipe; according to the continuous ice residue collecting and conveying device, the collecting and conveying efficiency is improved and the energy consumption is reduced while vacuum collection is ensured.

The invention provides a crystal pulling furnace and a vacuum pump control system for the crystal pulling furnace. The crystal pulling furnace comprises a main furnace chamber, an auxiliary furnace chamber, a crystal pulling head, a crucible and two vacuum devices, and the vacuum device is respectively communicated with the main furnace chamber and the auxiliary furnace chamber through a three-way electric control valve. When the control module receives a pre-working instruction sent by a controller of the crystal pulling furnace through the communication module, the control module controls the vacuum pump set to act to vacuumize the vacuum chamber until the vacuum detection module detects that the air pressure in the vacuum chamber meets a pre-configured first air pressure condition; and when a working instruction sent by the controller is received, the three-way electric control valve is controlled to be communicated, and the vacuum pump set is controlled to be started until the vacuum detection module detects that the air pressure in the vacuum chamber meets a pre-configured second air pressure condition. According to the invention, the two vacuum devices are configured to ensure the normal work of the crystal pulling furnace when any one of the devices is damaged, so that the vacuum environment in the crystal pulling furnace is ensured.

The pressure control swing valve comprises an air inlet pipe, a vacuum reaction cavity is installed at the bottom end of the air inlet pipe, the bottom end of the vacuum reaction cavity is connected with the top end of the stop valve, a pressure control swing valve body is installed at the bottom end of the stop valve, and a molecular pump is installed at the bottom of the pressure control swing valve body. A top clamping groove is formed in the bottom face of the vacuum reaction cavity, the top clamping groove is attached to the top of the damping mechanism, the bottom of the damping mechanism is attached to a bottom clamping groove, the bottom clamping groove is formed in the middle of the top face of the stop valve box, and the stop valve box is arranged on one side of the stop valve. According to the pressure control swing valve with the stop valve, the novel structural design is adopted, the stop valve is integrated at the air inlet of the swing valve, and the stop valve is closed when the swing valve needs to be maintained, so that a vacuum reaction cavity cannot be influenced by maintenance of the swing valve, a vacuum environment can be continuously kept, the restarting time is shortened, and devices in the vacuum reaction cavity cannot be damaged.

This invention relates to a plate absorption heat exchanger, comprising a base frame, and a heat pump unit, a first solution tank, a second solution tank, a circulating pump, a brazed heat exchanger, and a detachable plate heat exchanger mounted on the base frame. The heat pump unit includes a shell divided into four chambers, each housing a generator, a condenser, an absorber, and an evaporator. The generator, condenser, absorber, and evaporator each have a plate structure. The heat pump unit of this plate absorption heat exchanger has a plate structure for its generator, condenser, evaporator, and absorber, offering advantages such as high compactness, small size, and low cost.

The utility model discloses a kind of seaweed oligosaccharide concentration and crystallization device, comprising: membrane filtration equipment installed on the outer wall one end of bottom plate top and crystallization tank on the outer wall other end of bottom plate top, further comprising: connecting between membrane filtration equipment and crystallization tank liquid inlet pipe, liquid suction pump is installed on the liquid inlet pipe, and fixed plate is installed on the outer wall of bottom plate top, the outer wall of fixed plate one side is installed with electrically-conductive sliding platform, and controller is installed on the outer wall of fixed plate one side, tank cover is installed on the electrically-conductive sliding platform sliding member.The utility model of a kind of seaweed oligosaccharide concentration and crystallization device, by membrane filtration preliminary concentration, in combination with vacuum low-temperature heating depth enrichment, seaweed oligosaccharide thermal degradation can be avoided, water is removed efficiently;Ethanol addition and stirring linkage, ensure uniform mixing, conducive to the regular precipitation of crystal;Sealing structure guarantees the vacuum environment in tank, filter screen cooperates with sliding platform and collects crystal conveniently, overall improves concentration crystallization efficiency and product quality.

The utility model relates to a vacuum coating device with a height-adjustable crucible assembly, belongs to the technical field of vacuum coating equipment, and solves the technical problem that the distance between a crucible and a coating roller can be adjusted only by opening a door body of the vacuum coating equipment in the prior art. The vacuum coating device comprises a shell and a crucible assembly arranged in the shell, the lifting driving part is installed in the shell, and the crucible assembly is connected with the lifting driving part so as to ascend and descend in the shell along with the lifting driving part; and the control part is connected with the lifting driving part and used for controlling the lifting driving part to act, and the control part is arranged outside the shell. By means of the structure, the crucible assembly in the shell is driven by the lifting driving part to ascend and descend in the shell, the control part for controlling the lifting driving part to ascend and descend is arranged outside the shell, and therefore during adjustment, the shell does not need to be opened, external air can be effectively prevented from entering the shell to be attached to the surface of a component, shutdown is not needed during adjustment, and the adjustment efficiency is improved. And the production efficiency is improved.

The present invention belongs to the technical field of deposition equipment, and discloses a vacuum pumping system and a plasma deposition equipment. The vacuum pumping system is used to vacuum a reaction chamber, and the reaction chamber is used to accommodate undeposited matter. The vacuum pumping system includes a connecting pipe, a vacuum pump and a cleaning device. One end of the connecting pipe is connected to the reaction chamber, and the suction end of the vacuum pump is connected to the other end of the connecting pipe. The cleaning device is connected to the side wall of the connecting pipe. The cleaning device includes a dust collector, and the dust collector is provided with a vacuum inner cavity. The dust collector is used to collect undeposited matter. The cleaning device in the vacuum pumping system provided by the present invention uses the vacuum inner cavity to suck in the undeposited matter remaining in the connecting pipe. The cleaning device can effectively remove the undeposited matter remaining in the vacuum pumping system, and prevent the problem of insufficient vacuum degree caused by the accumulation of undeposited matter blocking the vacuum pump. The vacuum pumping system can keep the interior of the reaction chamber in a vacuum state, improve production efficiency, and ensure the production quality of the product.