36 results about "Vacuum extractor" patented technology

The utility model discloses a vacuum pumping unit capable of automatically separating oil and gas. The vacuum pumping unit comprises a rack and a stabilizing assembly. According to the vacuum pumping unit capable of automatically separating oil and gas, the pressing plate on the lower portion of the machine frame can press a rubber pad and a friction pad which are arranged at the bottom of the pressing plate to the upper end of the ground through downward pressing of the electric push rods on the two sides when the vacuum pumping unit is used, so that friction force and stability of the bottom of the machine frame are enhanced, and the service life of the machine frame is prolonged. The pressing rods at the four corners of the bottom of the pressing plate are pressed in the notches in the universal wheels to restrain the movement of the universal wheels, so that the overall stability of the vacuum pumping unit in use is guaranteed, and meanwhile, a flexible rubber pad, a friction pad and a second spring on the upper portion of a restraining arm are arranged, so that the overall stability of the vacuum pumping unit is guaranteed. And the height and the shape of the rubber pad can be self-adapted according to the height and the shape of the ground at the pressed part, so that the full contact between the rubber pad and the ground is improved, and the overall stability of the rack is enhanced.

This invention relates to a vacuum extractor that improves extraction performance through a vacuum treatment unit, which improves extraction performance by recovering extracts contained in the air drawn in when a vacuum is generated. The vacuum extractor includes: an extraction chamber for extracting extracts from a raw material using a solvent; a chamber heating unit for heating the extraction chamber with a heat medium to improve extraction performance by heating the raw material; and a vacuum treatment unit for generating a vacuum in the extraction chamber to facilitate extraction of the extract from the raw material, while simultaneously recovering the extracts contained in the drawn-in air using a vacuum pump. The vacuum treatment unit includes: a first cooler for cooling the air and recovering the extracts when a vacuum is generated in the extraction chamber using a vacuum pump; a cyclone tank for generating a cyclone and recovering the extracts contained in the air passing through the first cooler; a second cooler for further cooling the extracts contained in the air passing through the cyclone tank and recovering the extracts; and a recovery tank for storing the extracts recovered from the second cooler.

The application discloses a kind of quick deployment hot vacuum test device, including vacuum container and vacuum air extractor unit, the vacuum container is installed on support platform, the inner side wall of the vacuum container is provided with same body heat sink, the inner side of the same body heat sink is provided with cold plate, the front end of the vacuum container is hingedly provided with container cover plate, the support platform is fixedly installed with electric control cabinet, the vacuum container is fixedly connected with support platform by mounting assembly.The application adopts PID temperature control mode to divide the vacuum container into five areas, including container cover plate, vacuum container three stages and container bottom end, for temperature control heating, which achieves temperature uniformity and improves energy utilization rate. The cold plate is used for heat conduction auxiliary temperature control, which improves the temperature rising and falling rate of the product.

This invention discloses a quantitative analysis system and method for overlapping gas components, belonging to the field of gas analysis and vacuum diagnostics technology. The system comprises: a vacuum chamber to be tested, a first valve connection, and a differential device connected in sequence; the differential device is connected to a mass spectrometry detection unit, a spectral detection unit, and a vacuum pump unit; the mass spectrometry detection unit is used to acquire ion current signals of the analyte gas in multiple mass-to-charge ratio channels; the spectral detection unit is used to acquire characteristic spectral signals of the analyte gas in multiple wavelength channels; a data processing and calculation unit is communicatively connected to the mass spectrometry detection unit and the spectral detection unit, respectively, to obtain and output the partial pressure or concentration of each candidate gas component. Overlapping gas components are those gas components that are difficult to accurately distinguish in mass spectrometry detection due to overlapping mass-to-charge ratio channel responses or overlapping or intersecting characteristic spectral lines in spectral detection. This invention improves the identification capability and quantitative accuracy of overlapping components.

The utility model discloses an oil pan die-casting die which comprises a base and a connecting mechanism arranged on the base, and the connecting mechanism comprises a movable body assembly, a fixed body assembly and an injection assembly. The movable body assembly comprises a hydraulic machine, a movable mold, a mold cavity and a cooling water pipe, the fixed body assembly comprises a fixed mold, a mold, a longitudinal pouring gate, a transverse pouring gate and an inner pouring gate, and the injection assembly comprises an inclined vacuum exhaust pipe, an injection hopper and a piston; the cooling water pipe and the circulating water pipe are externally connected with cooling water to cool molten aluminum in the cavity and the mold, so that solidification and forming of the molten aluminum are accelerated; an external vacuum air extractor is used for extracting air in the cavity and the mold, air holes are prevented from being generated in the solidification process of molten aluminum, it is guaranteed that the compactness of the oil pan reaches the standard, the molten aluminum can be filled into the whole cavity and the mold in an extremely short time through the longitudinal pouring gate, the transverse pouring gate and the inner pouring gate, the molten aluminum is prevented from being condensed in the flowing process, manufacturing is efficient and rapid, and the production efficiency is improved. And the oil pan mold can be taken out by pushing the top frame.

The disclosure relates to the field of vacuum extractor device, comprising a main unit, a coupling seal and an air extraction connector; the main unit comprises a vacuum component and a first coupling terminal at least partially limited by an enclosure of a first coupling portion and air inlet channels connected to the vacuum component and the inner space of the first coupling portion; the coupling seal comprises a first sealing part that surrounds and covers at least part of the end of the first coupling portion, and a second sealing part that surrounds and covers at least part of the side of the first coupling portion; the air extraction connector is configured to be detachably assembled with the first coupling terminal, and the coupling step fits with the first sealing part, while the rim wall at least partially fits with the second sealing part.

The present application provides a system and method for measuring cesium evaporation rate in a fusion device offline, comprising a vacuum chamber, a cesium crucible assembly, a heating assembly, a film thickness gauge, a laser absorption spectroscopy system and a vacuum pumping unit. The present application uses the vacuum pumping unit to provide an ultra-high vacuum environment for the whole device including the vacuum chamber; then uses the heating assembly to heat the cesium crucible and the transmission pipeline to ensure the effective evaporation of cesium and reduce the deposition of cesium on the pipeline wall; then uses the film thickness gauge and the laser absorption spectroscopy system to measure the deposition thickness of cesium and the concentration of cesium atoms, and cross-check the measurement results of the two diagnostic methods; realize the measurement of cesium evaporation rate and obtain the quantitative relationship between the cesium evaporation rate and the heating temperature; finally transplant the measurement system to the negative ion source to realize the real-time monitoring of the cesium injection amount in the vacuum stage. The present application provides effective data and technical support for cesium flow control in the magnetic confinement nuclear fusion negative neutral beam injection system.

The utility model relates to water pump motor technical field discloses a kind of noise reduction type submersible pump motors, including built-in water pump, the right side of built-in water pump is provided with vacuum extractor, the outside of built-in water pump is provided with buffer mechanism, the buffer mechanism is used to reduce the vibration noise generated by water pump, the left side of vacuum extractor is provided with vacuum mechanism, the vacuum mechanism is used to empty the air inside water pump, the buffer mechanism includes bottom connecting piece, the top of bottom connecting piece is fixedly connected in the bottom of built-in water pump, the rear side of bottom connecting piece is fixedly connected in the inner wall rear side of buffer layer, the bottom of bottom connecting piece is provided with water inlet component, the outer wall of buffer layer is fixedly connected with fixed ring, the bottom of fixed ring is fixedly connected with bottom shell. In the utility model, the inside of device is provided with noise insulation equipment, can form multilayer sound barrier, improve the comfort and environmental protection of equipment use.

The utility model relates to the technical field of laser film production, and discloses a novel laser film vacuum spraying device which comprises a vacuum bin, a bin door is hinged to the left end of the vacuum bin, a vacuum air extractor is fixedly arranged on the top face of the vacuum bin and communicated with the vacuum bin, a spraying mechanism is arranged above the vacuum bin, and the spraying mechanism is connected with the vacuum bin. A connecting mechanism is arranged in the vacuum bin, the spraying mechanism comprises a heating part and a spraying part, the connecting mechanism comprises a connecting part and a cleaning part, the heating part comprises a storage box, and the storage box is fixedly connected with the vacuum bin. The heater is started to heat the spraying raw materials in the storage box, it can be guaranteed that the spraying raw materials are kept at the proper temperature in the spraying process, therefore, the spraying efficiency and the spraying quality are improved, and the spraying range below the connecting base can be conveniently adjusted through cooperation of the air cylinder, the moving base, the connecting rod, the moving rod, the driving rod and other mechanical structures.

Mobile ozone treatment device with vacuum extractor and ozone destroyer, comprising: a box (1) formed from a flexible and airtight cover (2) with a closable opening (3) for placing objects into the box (1); a vacuum extractor (9) for air with ozone destroyer connected to the box (1) via a connecting hose (8) and located outside the box (1); and an ozone generator (11) connected to the box (1) via a connecting hose (10) and located outside the box (1).

The utility model is suitable for the technical field of food packaging, and provides a vacuum machine for food packaging, which comprises a base, the stepping motor is fixed to the top of the base and used for adjusting the position of a food packaging bag, and a supporting shaft is installed on an output shaft of the stepping motor; the mounting frame is fixed to the supporting shaft through a fixing plate, and a fixing assembly is fixed to the mounting frame and used for stabilizing a food packaging bag; the hydraulic rod is mounted on the base, and a mounting plate is fixed on an output rod of the hydraulic rod; and the vacuum air extractor body is fixed on the mounting plate and is used for vacuumizing the food packaging bag. According to the vacuum machine for food packaging, continuous feeding and discharging can be achieved, and the packaging efficiency is effectively guaranteed.

A pump assembly (1) for generating a vacuum during a medical procedure, the pump assembly comprising a pump housing defining a pump chamber and further having an air inlet and an air outlet in fluid communication with the pump chamber. The pumping member is disposed on or in the pump housing and is configured to increase and decrease an interior volume of the pump chamber. A chamber cover is disposed on an outer side of the pump housing and covers a portion of the pump housing, where the chamber cover includes an inlet flap extending above the air inlet, where the air inlet and the inlet flap constitute a one-way valve configured to cause inlet air to flow into the pump chamber when an internal volume of the pump chamber increases.

The utility model provides a material lifting and conveying device. The material lifting and conveying device comprises a rack, a conveying mechanism, a hopper, a power mechanism and a vacuum pumping mechanism. The rack comprises a bottom end and a high end which are oppositely arranged. The conveying mechanism comprises a conveying belt, a bottom plate assembly and a transmission assembly. The bottom plate assembly is obliquely arranged on the rack, a hollow inner cavity is formed in the bottom plate assembly, the transmission assemblies are arranged at the two ends of the bottom plate assembly, and the conveying belt covers the bottom plate assembly and the transmission assemblies. A plurality of vacuum adsorption assemblies are arranged on the conveying belt at first preset intervals. The hopper is arranged on the conveying belt and located at the bottom end of the rack. The power mechanism is connected to the transmission assembly and acts to drive the transmission assembly to drive the conveying belt to circularly convey in the direction from the bottom end to the high end. The vacuum pumping mechanism is arranged on the machine frame and communicated with the inner cavity so as to form a vacuum adsorption space in the inner cavity, materials can be adsorbed through the vacuum adsorption assembly, and the materials in the hopper can be automatically placed on the conveying belt to be conveyed.

The utility model relates to the technical field of toy packaging, in particular to a vacuumizing heat-sealing device which comprises a moving frame, a heat-sealing clamping mechanism, a vacuum pumping mechanism and an edge stroking mechanism, and the edge stroking mechanism, the heat-sealing clamping mechanism and the vacuum pumping mechanism are all installed on the moving frame. The heat-sealing clamping mechanism comprises a pair of heat-sealing rods which can be opened and closed mutually to clamp and heat-seal a bag opening of a packaging bag, and the suction end of the vacuum air suction mechanism and the output end of the edge smoothing mechanism can be inserted into the area between the two heat-sealing rods. The output end of the edge smoothing mechanism can be opened in the length direction of the gap between the two heat sealing rods so as to smoothen the bag opening of the packaging bag. The vacuumizing and heat-sealing equipment can be used for vacuumizing and heat-sealing, and also can be used for smoothing a bag opening before heat-sealing, so that the heat-sealing quality is ensured.

This invention proposes a vacuum pumping device for a single-stage octagonal magnetron sputtering machine, comprising a high-vacuum pumping unit, a locking mechanism, and a bellows. The locking mechanism includes a C-shaped hook and a clamp. The high-vacuum pumping unit consists of a backing pump and a molecular pump. The input end of the backing pump is connected to a cavity to achieve pre-vacuuming. The molecular pump is placed below the backing pump and is connected to the output end of the backing pump via a C-shaped hook with locking function. The output end is connected to an angle valve via a flange to control the gas flow. The clamps are provided at all pipe interfaces to lock the interfaces and prevent air leakage. The bellows is placed between pipes to compensate for axial displacement. This device improves vacuum acquisition efficiency and sealing reliability by optimizing the locking and connection structure, while also facilitating maintenance and disassembly.

The utility model discloses an integrated vacuum tank, which belongs to the technical field of storage tanks, and comprises a tank body, a lower cover, an upper cover and a vacuum pumping mechanism, the vacuum pumping mechanism is arranged on the lower cover, the vacuum pumping mechanism is movably connected with the upper cover, and the vacuum pumping mechanism is configured to pump out gas in the tank body. The vacuum pumping mechanism comprises an outer cylinder and an inner cylinder which are movably connected, the inner cylinder is located on the side, away from the tank body, of the outer cylinder, the inner cylinder is fixedly connected with the lower cover, a cavity is formed between the outer cylinder and the inner cylinder, the cavity is configured to transfer air in the tank body and move the outer cylinder in the direction close to the tank body, and air in the tank body enters the cavity. The outer cylinder is moved in the direction away from the tank body, and the air in the cavity is released to the outside air. According to the utility model, a high-vacuum environment can be obtained by repeatedly moving the outer cylinder, the vacuum degree required by the working environment can be quickly and accurately obtained, and the storage time of articles is prolonged.

The application belongs to the technical field of optical fiber preparation equipment, and discloses a coating device for preparing invisible optical fiber based on nylon 12. The coating device for preparing invisible optical fiber based on nylon 12 comprises an outer protective shell, a feeding port and a discharging port are arranged on the left side and the right side of the outer protective shell respectively, a rotating drum is movably connected to the middle part of the outer protective shell, and a driving motor is fixedly connected to the outer side of the outer protective shell through a mounting plate. The coating device for preparing invisible optical fiber based on nylon 12 is used in cooperation with a nozzle assembly by using a spraying mechanism, the driven gear and the rotating drum are rotated by driving the driving motor, the coating box, the spraying pipe and the nozzle are rotated, the nozzle is rotated around the optical fiber, the uniformity of spraying is improved, after the nozzle assembly absorbs waste gas and solution vapor, the spraying effect is further improved by further sucking the waste gas and the solution vapor into the spraying pipe through a vacuum air extractor and discharging the waste gas and the solution vapor and pressurizing the nozzle, so that the spraying is more uniform and the spraying effect is improved.

This invention relates to a vacuum extractor with a residue conveying device, which extracts an extract through vacuum and easily discharges and conveys the remaining residue. According to an embodiment of the invention, the vacuum extractor with a residue conveying device includes: an extraction chamber for extracting the extract from a raw material using a solvent; a chamber heating unit for heating the extraction chamber with a heat medium to improve extraction performance by heating the raw material; a vacuum pump for generating a vacuum in the extraction chamber to easily extract the extract from the raw material; and a conveying device including a conveying screw installed in the extraction chamber, which, while rotating, conveys and discharges the residue of the remaining raw material after extracting the extract to the outside of the extraction chamber.

The utility model relates to the technical field of feed enzyme processing, and discloses a feed enzyme blocky raw material vacuum drying oven which comprises a drying oven body, one side of the top of the drying oven body is fixedly communicated with a feeding pipe, the bottom end of the feeding pipe extends into the drying oven body, and the outer portion of one side of the drying oven body is fixedly connected with a vacuum air extractor. The uniform discharging assembly comprises a discharging groove hinged to the bottom of the feeding pipe, balls are arranged at the bottom of the discharging groove, a containing frame is arranged on the lower portion of an inner cavity of the drying box body, sliding plates are slidably connected to the outer portions of the two sides of two sets of sliding rods, and connecting rods are symmetrically hinged between the sliding plates and the containing frame through hinge pieces. One side of the containing frame is fixedly connected with an L-shaped support, and the L-shaped support is movably connected with the balls. According to the feed enzyme drying device, the problem that the drying effect on feed enzyme raw materials is reduced due to the fact that smashed feed enzyme is prone to accumulation when being discharged into a vacuum drying box is effectively solved.

The utility model relates to the technical field of air extractor equipment, and discloses a low-energy-consumption oil-free vacuum air extractor unit which comprises an air extractor assembly, a motor mounting frame, a driving assembly, a supporting assembly, an exhaust port, an air inlet, a liquid inlet pipe, a liquid outlet and a filtering assembly. An air inlet pipe is installed on the outer wall of the shell, a liquid inlet is formed in the other side of the shell, and a liquid discharge pipe is installed on the outer wall of the shell; according to the low-energy-consumption oil-free vacuum air extractor unit, the filter plates and the vent plates which are distributed in pairs are arranged in the cylinder body, so that air can be filtered by the filter plates and the through holes when passing through the cylinder body, the air can be guided to pass through the through holes when being exhausted, and disorder of air inlet and outlet can be effectively avoided; and liquid water with higher stability is used for replacing grease, so that the rotating stability of the arc-shaped blade can be effectively improved.

The utility model relates to the technical field of medical instruments, and particularly discloses a test tube vacuumizing device which comprises a machine frame, a test tube rack, an air cylinder, a gas distribution cavity, needle tubes, an electromagnetic valve, a gas pressure meter, a time relay, a pedal switch, an air pump, a first travel switch and a second travel switch. The test tube rack, the barometer, the time relay, the electromagnetic valve, the pedal switch, the first travel switch and the second travel switch are in sliding connection with the rack; the barometer, the time relay, the electromagnetic valve, the pedal switch and the time relay are fixedly connected with the rack; the first travel switch is fixedly connected with the test tube rack; the test tubes can be vacuumized by placing the test tubes into the test tube rack, placing the test tubes into equipment and starting a switch, so that the quantity of the test tubes vacuumized at a time is greatly increased, the processing efficiency is greatly improved, and meanwhile, the labor intensity can be effectively reduced.

The invention relates to measuring equipment and may be used to measure the concentration of gases: hydrogen, oxygen, carbon oxide, carbon dioxide, methane, acetylene, ethylene, ethane (H2, О2, CO, CO2, CH4, C2H2, C2H4, C2H6) dissolved in transformer oil. A gas analyzer for gases dissolved in oil comprises a housing accommodating: a control unit, a vacuum extractor for extraction of the gases from the oil via hydraulic lines for supplying the oil from a transformer into the extractor and its discharge, a measuring cell for measuring the concentration of the gases. The measuring cell is connected to the extractor and made as a Herriott optical system for multiple passage of laser radiation from one mirror to another and measuring its output intensity using a photodiode. The measuring cell is connected to a laser module and a reference channel for laser wavelength calibration. There is a membrane assembly installed between the extractor and the measuring cell to prevent the oil from entering the measuring cell. The laser module is configured to ensure operation of each of its three lasers at a certain wavelength to allow measurements of different gases in the gas mixture. The reference channel includes a gas-proof glass transparent container for the gas mixture, and a photodiode. The measuring cell mirrors are provided with heaters and insulations, while the extractor can be calibrated automatically by means of pressure sensors installed in it at different levels to perform extraction at the level of these sensors, with subsequent measurement of gas concentrations at these levels and determination of the gas solubility. The invention will make it possible to improve measuring accuracy.

The invention discloses a boronizing treatment system for a first wall surface of a fusion device. The device comprises a special gas safety cabinet, a gas transmission pipeline, a gas shunting box, a safety interlocking system, a vacuum pumping unit and a tail gas processor, the special gas safety cabinet is connected with the gas shunting box through a gas transmission pipeline; the gas shunting box is connected with the vacuum chamber of the EAST fusion device through a gas transmission pipeline; the safety interlocking system is used for detecting the running states of the special gas safety cabinet, the gas shunting box, the gas monitor, the vacuum pumping unit and the tail gas processor; the vacuum pumping unit is connected with the EAST fusion device; and the tail gas treater is connected with an exhaust port of the mechanical dry pump of the vacuum pumping unit. The invention provides a simple, economical and effective boronizing system for treating the surface of the first wall in a fusion device, deuterated diborane is used as a working material, pollution caused by C and H impurities in a B2D6 sample in a boronizing experiment can be avoided, and the safety of a future experiment is ensured.

The invention discloses a one-way water-permeable cooling method for the interior of concrete, and belongs to the technical field of constructional engineering.The one-way water-permeable cooling method for the interior of the concrete comprises the steps that multiple sets of cooling pipes are arranged in the concrete, and a vacuum pumping mechanism and a cooling circulation mechanism are connected to the cooling pipes respectively; the interior of the cooling pipe is sucked to be in a negative pressure state through a vacuum pumping mechanism, so that surplus water in the concrete enters the cooling pipe through the one-way water permeable film and is continuously discharged; cooling water is introduced into the cooling pipe by adopting a cooling circulation mechanism; the cooling circulation mechanism is controlled to stop cooling water circulation and empty residual accumulated water in the cooling pipe; and the cooling pipe section extending out of the surface of the concrete is cut off, and pressure grouting hole sealing is conducted on the cooling pipe buried in the concrete. According to the technical scheme, cavities, water bags, microcracks and other original defects formed by water accumulation and migration can be effectively reduced from the source, the internal structure of the concrete is more compact and uniform, and then the construction quality of the concrete is guaranteed.

The utility model discloses a distributed electric heat storage device for peak regulation, which relates to the technical field of electric heat storage and comprises a cavity, a support and a top cover, the support is welded at the bottom of the cavity, a clamping groove at the top of the cavity is connected with the top cover, a material conversion component is mounted in the cavity and divides the cavity into two independent functional areas, and the material conversion component is connected with the top cover. Wherein a heat storage cavity is formed in the left side, a heat release cavity is formed in the right side, a condenser is installed on the outer side of the cavity, and a vacuum air extractor is installed on the end face of the upper portion of the top cover. Through a heat absorption process and a heat release process of a thermochemical reversible reaction of Ca (OH) 2 / CaO, a distributed electric heat storage device is formed by combining a heat storage cavity, a heat release cavity and electric energy, flexible peak regulation of power utilization is achieved when new energy of a power grid is in a high load, civil life requirements are met when the new energy is in a low load, and the aim of resource utilization is achieved.

This utility model discloses a feeder, including a storage container and a base. The storage container is mounted on the base and has a discharge port and a feeding paddle for pushing the feed in the storage container to the discharge port. A sealing valve is provided at the discharge port. The base houses a main control circuit board and a vacuum pumping mechanism, a discharge drive motor, and a valve switching mechanism electrically connected to the main control circuit board. The vacuum pumping mechanism has a suction nozzle communicating with the inside of the storage container. The storage container is equipped with a manual venting device, which includes an venting channel and an venting valve body. The venting channel connects the inner and outer sides of the storage container, and the venting valve body is movably engaged with the venting channel. Under normal or negative pressure conditions inside the storage container, the venting valve body closes the venting channel. The venting valve body has a touch-sensitive part, allowing direct or indirect manual activation to open the venting channel. This utility model's manual venting device does not rely on a power source for venting, making operation more convenient.

The invention discloses a deuterated diborane gas purity detection system and method in a boronizing system of a fusion device, and belongs to the technical field of nuclear fusion, and the system comprises a deuterated diborane gas cylinder, a flow control valve, a vacuum test chamber, a vacuum gauge tube, a quadrupole mass spectrometer, a vacuum pumping unit and a tail gas processor. According to the invention, the vacuum degree in the vacuum test chamber is pumped to 10 <-6 > Pa by using the vacuum pumping unit, and the vacuum test chamber is controlled in a stable state; then opening a flow control valve to introduce deuterated diborane into the vacuum test chamber, adjusting the opening degree of the valve, maintaining the vacuum degree in the vacuum test chamber within 10 <-3 > Pa, and finally measuring the molecular weight and concentration of the introduced gas by using a quadrupole mass spectrometer, so as to distinguish the purity of the deuterated diborane and the purity of the hydrodiborane. According to the method, the purity of the deuterated diborane is determined by detecting the difference between the molecular weights of the hydrogen-substituted diborane and the deuterated diborane through the quadrupole mass spectrometer, and a technical support is provided for a fusion device to carry out pure deuterated diborane boronizing wall treatment.

The utility model discloses a sample waste gas recovery device which comprises a first pipeline and a second pipeline which are respectively connected into a nitrogen pipe network and a pressure combustible gas pipe network, the first pipeline and the second pipeline are converged and then are connected with a main pipeline, the main pipeline is connected with a vacuumizer, the vacuumizer is respectively connected with a third pipeline and a fourth pipeline, and the third pipeline and the fourth pipeline are communicated with the pipeline. The third pipeline is connected with a buffer tank, a first valve group and a gas bag, the fourth pipeline is connected with an emptying pipeline and a second valve group, and the fourth pipeline is connected with a gas recovery pipe network. And the safety is high.

The invention relates to a molecular sieve oxygen generation device. The molecular sieve oxygen generation device comprises a compressed air source, a first three-way valve, a first molecular sieve tower, a first flow limiting valve and a vacuum air extractor, the compressed air source comprises a first connector and a second connector, the first three-way valve comprises a third connector, a fourth connector and a fifth connector, the first molecular sieve tower comprises a sixth connector and a seventh connector, the first flow limiting valve comprises an eighth connector and a ninth connector, and the vacuum air extractor comprises a tenth connector and an eleventh connector. The first connector is connected with the atmospheric environment, the second connector is connected with the third connector, the fourth connector is connected with the sixth connector, the seventh connector is connected with the eighth connector, the ninth connector is connected with an oxygen storage tank, the fifth connector is connected with the tenth connector, and the eleventh connector is connected with the atmospheric environment. The molecular sieve oxygen generation device can improve the oxygen generation efficiency of the molecular sieve and reduce the oxygen generation cost of the molecular sieve.