7results about How to "Stable vacuum" patented technology

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 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 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 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.