17results about How to "Stable vacuum" patented technology

The invention discloses a dynamic boiling point-saturated vapor pressure measuring instrument for Chinese medicine extracts, comprising a vacuum pump, the vacuum pump being connected to a No. 1 vacuum buffer tank and a No. 2 vacuum buffer tank through pipelines, the No. 1 vacuum buffer tank and the No. 2 vacuum buffer tank being connected through pipelines, and the No. 2 vacuum buffer tank being sequentially connected to a drying tower, a condenser and a heating boiler through pipelines. The invention is based on the dynamic boiling point-saturated vapor pressure correlation theory, and can realize the detection of different boiling points and the corresponding saturated vapor pressures of Chinese medicine extracts under different concentration conditions.

The utility model discloses a handheld dust collector floor brush shell with a damping function, and relates to the technical field of handheld dust collector floor brush shells, the handheld dust collector floor brush shell with the damping function comprises a handheld dust collection device, and the bottom of the handheld dust collection device is provided with a floor brush device; according to the utility model, the plurality of shock absorbers are arranged between the bottom of the shell and the floor brush device, so that the shock generated when the floor brush device works on different grounds can be effectively absorbed, the transfer of the shock to a handheld part is reduced, the dust collection process is more stable, the holding comfort of a user is improved, and meanwhile, the abrasion of internal parts caused by the shock is reduced; the product service life is prolonged; the second motor drives the rolling brush to rotate at a high speed, and dust, sundries and the like on the ground can be efficiently cleaned in cooperation with suction force formed by the dust suction nozzle and the dust suction pipe; the observation window is convenient for a user to know the working state of the rolling brush in real time, discover problems and clean in time, and ensure that the cleaning effect is always kept good.

The utility model discloses a novel carbonization furnace for bonding silicon carbide seed crystals, which comprises a lifting mechanism, a base and a cover body, the cover body is arranged at the top of the base, and the lifting mechanism is used for lifting the cover body; a cover body is arranged on the base, a hydraulic driving mechanism is arranged at the top of the cover body, a dowel bar is connected to the driving end of the hydraulic driving mechanism, one end of the dowel bar extends into the cover body and is connected with an upper pressing block, a supporting seat is arranged on the base below the upper pressing block, and a heating mechanism and a temperature measuring mechanism are arranged in the supporting seat; and an upper heat insulation screen is arranged at the top of the interior of the cover body on the outer side of the dowel bar, a lower heat insulation screen is arranged on the base at the bottom of the interior of the cover body on the outer side of the supporting seat, and the lower heat insulation screen is located on the inner side of the upper heat insulation screen. The sintering temperature can be accurately controlled through the heating mechanism and the temperature measuring mechanism which are arranged in the supporting seat, the heat loss of a sample heating area, the overheating of the cover body and the like are reduced through the upper heat insulation screen and the lower heat insulation screen, and the temperature control precision and the pressure control precision are effectively improved.

The invention discloses a vacuum glass vacuumizing production line and a vacuumizing process, and belongs to the technical field of vacuum glass processing. The vacuum glass vacuumizing production line comprises a transfer system, a conveying system and a heating furnace system, and further comprises a vacuumizing mechanism, the vacuumizing mechanism comprises an opening extracting assembly, a supporting assembly and a glass pressing assembly, and an opening extracting inner cavity which drives the glass pressing assembly to press glass and has pressure is formed in the opening extracting assembly; the transfer system comprises a vacuum chuck mechanism and a transfer mechanism, and the vacuum chuck mechanism is provided with a three-axis driving device and a vacuum chuck; the conveying system comprises a vacuum vehicle, the vacuum vehicle is provided with a product carrier, and the vacuum vehicle drives the vacuum glass to be machined at different machining stations on the production line. The transfer system, the conveying system, the heating furnace system and the vacuumizing mechanism are sequentially arranged in the machining direction of the vacuum glass production line, all the mechanisms are matched with one another, efficient and automatic production of the vacuum glass vacuumizing process is achieved, and the product quality and consistency are improved.

The utility model discloses a kind of vacuum glue injection equipment of integrated ultra-low leakage rate and quick sealing function, comprising: equipment frame, the positioning table for positioning and placing product is equipped on the equipment frame upper end, vacuum glue injection cover is movably lifted by limiting guide rod and is equipped on the outside of positioning table, glue injection shaft, glue injection plate rotation is driven by gear transmission by servo motor, cooperate equidistant glue injection head, realize 360 ° rotation glue injection. Compared with traditional fixed glue injection head, it can be flexibly adapted to the multi-angle glue injection needs of complex products, solve the single problem of glue injection path, ensure that colloid is evenly distributed, effectively improve product yield. Vacuum pump, pneumatic butterfly valve and vacuum pressure sensor constitute intelligent system. Sensor real-time monitoring pressure in vacuum glue injection cover, feedback to control system, automatically adjust butterfly valve opening degree and pump operation, change the instability of manual adjustment, ensure that vacuum degree is stable during vacuum glue injection process, reduce bubble generation, improve product quality.

The invention relates to the technical field of solvent extraction, and discloses a rare ginsenoside extraction device and a rare ginsenoside extraction process, the rare ginsenoside extraction device comprises an evaporation concentration assembly, a gas-liquid separator, a condensation assembly and a condensate receiving tank which are communicated in sequence; according to the invention, the conical dispersion cylinder realizes uniform distribution of total cross section of steam, avoids the problems of vibration and bias flow caused by direct flushing of the steam to the tube plate, greatly improves the utilization rate and condensation efficiency of the heat exchange tube, and stabilizes the vacuum degree of the system; a two-stage interception structure of front gas-liquid separation matched with secondary defoaming of a gas inlet cavity effectively prevents rare ginsenoside entrainment from running away along with steam and adhering to the inner wall of a condensation pipe to scale, and a closed-loop reflux structure is matched to realize full-amount recovery of effective components, so that the product yield is increased; the whole-process closed vacuum communication design is adopted, external air is isolated in the whole process, the oxidative degradation risk of rare ginsenoside is reduced, meanwhile, low-temperature concentration can be achieved in the vacuum environment, the thermal degradation probability of target components is reduced, and the product activity is guaranteed.

The present application provides a dust collecting device and an electric cleaner. The dust collecting device includes a main body (10) having an opening (110), a first dust collector (20) having a first dust collecting brush (210) for collecting dust, and a second dust collector (30) having a second dust collecting brush (310) for collecting dust, the first and second dust collectors (20, 30) being rotatably arranged in parallel in the main body (10); when the first dust collecting brush (210) is located in the opening (110), the first dust collecting brush (210) is inclined toward the second dust collector (30) on a surface, and when the second dust collecting brush (310) is located in the opening (110), the second dust collecting brush (310) is inclined toward the first dust collector (20) on a surface. The dust collecting device can collect dust even when the power of the electric cleaner is off, and can be used at any time without worrying about noise.

The invention discloses a structure for keeping the vacuum degree of a sealing cavity of a refrigeration camera for a long time, and the structure comprises a sealing structure which is made of a high-sealing material so as to form an internal vacuum environment. The sealing structure comprises an outer sealing cavity and an inner sealing cavity, the outer sealing cavity completely wraps the inner sealing cavity and is located outside the inner sealing cavity so as to isolate the inner sealing cavity from outside air, and a vacuum buffer area and a vacuum pump connector are formed between the outer sealing cavity and the inner sealing cavity at a certain interval. The vacuum pump interface is arranged on the sealing structure and is connected with an external vacuum pump to extract gas in the sealing structure, so that a vacuum environment is formed in the sealing structure, and the sealing enhancing device is arranged around a seam of the sealing structure; and the refrigerating device is thermally connected with the sealing structure. According to the structure, a double structure of the outer sealing cavity and the inner sealing cavity is adopted, a vacuum buffer area is formed, and the influence of external air on internal core components is effectively isolated.

The invention relates to the technical field of semiconductor material processing, in particular to a wafer alignment bonding device and a wafer bonding method. The wafer alignment bonding device comprises a first carrying table used for carrying a first wafer; the second carrying table is used for carrying a second wafer; the first carrying table and the second carrying table are configured to selectively enable the first wafer and the second wafer to be aligned and attached. According to the wafer counterpoint bonding device, the wafer can be held in the vacuum chamber, the wafer angle can be changed, wafer counterpoint bonding can be carried out, the wafer counterpoint bonding precision can be kept in the process, and the stability of the vacuum degree in the chamber can also be kept. According to the wafer bonding method provided by the invention, double-layer wafer activation bonding and multi-layer wafer activation bonding can be carried out.

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 invention discloses an oxidation crystallizer vacuumizing device, and belongs to the technical field of vacuumizing devices, the oxidation crystallizer vacuumizing device further comprises a vacuumizing device arranged on one side of an oxidation crystallizer, the vacuumizing device comprises a liquid ring vacuum pump, an oxidation crystallizer condenser, a gas-liquid separator and a liquid sealing pump, and the bottom of the gas-liquid separator is connected with the upper portion of the oxidation crystallizer through a pipeline; an inlet of the liquid sealing pump is connected with the bottom of the oxidation crystallizer condenser through a pipeline, an outlet of the liquid sealing pump is connected with the liquid ring vacuum pump through a pipeline, and a mother liquor circulating tank removing pipeline is arranged on the pipeline between the liquid sealing pump and the liquid ring vacuum pump. And on the premise of ensuring that the gas phase in the steam does not flow back, one part of liquid condensed from the liquid phase of the steam is conveyed to the downstream, and the other part of liquid is conveyed to the liquid ring vacuum pump to be used as replenishing liquid, so that the liquid phase in the steam is recycled, a water source does not need to be added to be used as the replenishing liquid of the liquid ring vacuum pump, the energy consumption is saved, and the waste of resources is reduced.

The invention discloses a novel rotating fault beam subsystem testing device, which relates to the technical field of accelerators, and comprises a main body bracket, the top of the main body bracket is fixedly connected with an accelerating tube and a shielding body thereof through a special adapter part, one side of the main body bracket is fixedly connected with a fixed plate through a bolt, and a four-port circulator is movably arranged on the fixed plate. A magnetron is arranged at the bottom of the four-port circulator, a space twisted waveguide is fixedly connected between the accelerating tube and the shielding body thereof and the four-port circulator, and a carrying trolley is arranged below the main body bracket. According to the invention, the accelerating tube and the shielding body thereof are vertically fixed on the main body bracket through the special adapter parts, so that miniaturization and light weight are realized, the accelerating tube is positioned in the center of the main body bracket, and the following components such as the four-port circulator and the magnetron are backed on the side wall of the main body bracket through the spatial twisted waveguide, so that the overall occupied area of the equipment is reduced, and the equipment is convenient to use. And the test equipment can be replaced at any time while the water tank is transported and the position is finely adjusted.

The utility model discloses a vacuum pumping mechanism for NMP rectifying device, the utility model relates to NMP rectification technical field. This vacuum pumping mechanism for NMP rectifying device includes support frame, the top of support frame is provided with vacuum pumping mechanism, is used for reducing rectifying device internal gas pressure, the vacuum pumping mechanism includes: buffer assembly, including fixed mounting on the top of support frame buffer jar, the bottom fixed mounting of buffer jar has unloading valve, the inside fixed mounting of buffer jar has baffle, gas first enters filter jar and neutralization solution contact, and harmful ingredients in neutralization solution and NMP steam react, and preliminary eliminate toxicity, gas needs to pass through the filter screen and internal adsorption filler of filter frame subsequently, and filter screen blocks impurity, and filler depth adsorbs residual harmful substance, and the annular aperture structure of guide plate forces gas to only enter the adapter pipe after filter frame processing, cannot bypass purification link, and then is discharged by vacuum pump safely, prevent harmful gas exhalation.

The utility model relates to a floor brush with a suction port capable of being automatically adjusted, which comprises a shell with a dust suction port formed at the bottom, a rolling brush arranged at the dust suction port, a barrier strip movably connected to the shell and positioned in front of and / or behind the dust suction port, and an elastic piece connected between the barrier strip and the shell, along with the change of the volume of the sucked ground garbage, the barrier strip is synchronously far away from or close to the ground and drives the suction port to become larger or smaller, so that the ground garbage can pass through the suction port; and the elastic piece drives the barrier strip to keep the trend of moving towards the ground. On one hand, the size of the suction port can be automatically adjusted according to the size of garbage in the moving process of the floor brush through the cooperation of the blocking strip and the elastic piece, so that garbage of different sizes and volumes can be conveniently collected, and operation is easy and convenient; on the other hand, the vacuum degree between the ground brush and the ground can be stable, and the dust collection effect and the cleaning efficiency are effectively improved.

The utility model discloses a special grinding machine for brake disc processing capable of avoiding dust raising, which relates to the technical field of brake disc processing and comprises a bottom plate and two grinding stations, the two grinding stations are fixedly arranged on two sides of the upper surface of the bottom plate, two side plates are fixedly arranged in the middle of the upper surface of the bottom plate, and a rotating shell is arranged between the two side plates. Rotating rods are fixedly arranged on the two sides of the rotating shell, the other ends of the rotating rods are rotationally connected with the corresponding side plates, a transmission mechanism for driving the rotating rods to rotate is arranged on the outer side of the side plate on one side, a rotating block is fixedly arranged at one end of the rotating shell, and dust collecting grooves are formed in the two sides of the rotating block. And the dust collection groove on one side covers the outer side of the corresponding polishing station. The double-station design is adopted, when the brake disc machined on one side is replaced, the brake disc can be machined on the other side, the time wasted by material replacement can be shortened, and the working efficiency is improved.

The utility model relates to the technical field of miniature vacuum pumps, and discloses an air inlet cover shell of a miniature vacuum pump, which comprises a miniature vacuum pump body, an air inlet pipe is fixedly connected to the outer wall of the miniature vacuum pump body, an air inlet cover shell body is fixedly connected to the outer wall of the air inlet pipe, and a round sleeve is arranged on one side of the air inlet cover shell body. A butt joint sleeve is fixedly connected to the outer wall of the round sleeve, a sealing sleeve is fixedly connected to the side outer wall of the air inlet cover shell, a sealing ring is installed on the outer wall of the sealing sleeve, a butt joint groove matched with the sealing sleeve is formed in the outer wall of the round sleeve, and a sealing groove is formed in the outer wall, located on one side of the sealing sleeve, of the air inlet cover shell. According to the utility model, a double-sealing structure can be formed, gas leakage can be effectively prevented, stable vacuum degree can be maintained in a vacuum environment, the sealing reliability can be improved, and the round sleeve can be quickly disassembled to replace flange plates of different models; and the gas inlet housing is quickly connected with gas external equipment with different specifications.

The utility model provides a roots vacuum pump gas -liquid separation device, including gas -liquid separation cylinder, the gas -liquid separation cylinder top is equipped with the cylinder cover, first liquid discharge valve is installed in the gas -liquid separation cylinder bottom, the tee pipe is installed in first liquid discharge valve lower extreme, second liquid discharge valve is installed in the tee pipe away from first liquid discharge valve one end, the cross -cylinder is adjacent to the tee pipe through the pipe joint and communicates, the cross -cylinder is installed with detachable end disc away from the tee pipe one end, the piston is slidably installed in the cross -cylinder, the piston one side middle part position is installed with threaded rod, the threaded rod away from the one end of piston penetrates end disc and threaded rod is connected with end disc screw thread, the handle rod is installed to the threaded rod away from the one end of piston, the utility model has the beneficial effect that does not need to stop the machine and carry out the liquid discharge operation.