17 results about "Membrane flow" patented technology

The present invention provides a membrane separation system capable of separating a condensed component in a liquid state in an energy-saving manner. A membrane separation system according to an embodiment of the present invention is provided with a membrane separator including a separation membrane. The membrane separator has a first flow path and a second flow path. The mixed gas is supplied to the first flow path. The mixed gas contains a permeable gas that can permeate through the separation membrane and a condensable component in a gaseous state. And a second flow path through which a permeate gas that has permeated through the separation membrane flows. The membrane separation system is configured such that a liquid-state condensable component is present at the downstream end of the first flow path in the direction in which the mixed gas passes.

The invention discloses a high-speed airflow shear liquid film flow slippage boundary condition construction method and device, equipment and a medium, and relates to the technical field of fluid mechanics, and the method comprises the steps: constructing a liquid film flow N-S equation, a liquid film interface kinematics boundary equation and an interface stress balance equation of a target high-speed aircraft under high-speed airflow; carrying out dimension reduction simplification by utilizing a lubrication approximation method and the temperature change of the target high-speed aircraft under the high-speed airflow so as to obtain a target simplified equation; carrying out numerical simulation on the target high-speed aircraft under the high-speed airflow to drive a liquid film to move by airflow shear force based on the target simplified equation so as to obtain liquid film displacement data of the target high-speed aircraft under the high-speed airflow; and fitting the liquid film displacement data with an airflow shear force of the target high-speed aircraft under the high-speed airflow to obtain a target slippage boundary condition corresponding to liquid film flowing when the high-speed airflow shears the liquid film. Therefore, the development efficiency of the aircraft can be improved.

Described is an ejector-type vacuum pump assembly that includes a stabilizing membrane flow valve, wherein a pilot flow of pressurized air is used to regulate a main flow of pressurized air for driving an ejector-type vacuum pump is disclosed. The pilot flow is led to a downstream side of the membrane flow valve and is fed to the ejector of the ejector-type vacuum pump along with the main flow of pressurised air. The ejector-type vacuum pump assembly is primarily intended for automated gripping operations using a suction gripper. Also disclosed is a method of controlling a vacuum level in a vacuum chamber of an ejector-type vacuum pump in an ejector-type vacuum pump assembly as described herein.

The invention belongs to the field of concentration devices, and particularly relates to a milk forward osmosis coupled reverse osmosis concentration device which comprises a milk concentration tank, a milk processing frame is arranged on the inner wall of the milk concentration tank, and a concentration anti-aggregation mechanism is arranged in the milk concentration tank. According to the invention, the surface of the membrane is kept clean through a physical scraping effect, and the selective separation function of the reverse osmosis membrane is ensured to be fully exerted, so that the high and stable desalination rate is ensured; besides, the cleaning scraper and the turbulent flow column do reciprocating motion in the membrane runner to generate strong shearing force and turbulent flow, and the forced disturbance effectively destroys and thinns a static boundary layer on the surface of the membrane, so that the osmotic pressure additionally increased due to concentration polarization is directly reduced, and the osmotic pressure on the surface of the membrane is reduced due to the fact that the concentration polarization is weakened; and meanwhile, a newly generated pollution layer is removed in time, the water flow resistance is reduced, and the newly generated pollution layer and the water flow resistance act together, so that the driving pressure required by the system is remarkably reduced under the condition of the same water yield, and energy conservation and consumption reduction are realized.

Disclosed is an ejector-type vacuum pump assembly comprising a stabilized membrane flow valve, wherein a pilot flow of pressurized air is used to regulate the main flow of pressurized air for driving the ejector-type vacuum pump. [Solution] A pilot flow is guided downstream of a membrane flow valve and supplied to the ejector of an ejector-type vacuum pump along with the main stream of pressurized air. The ejector-type vacuum pump assembly is primarily intended for automatic gripping operations using a suction gripping unit. Also disclosed are a flow control unit for controllably releasing the flow of pressurized air supplied to the ejector-type vacuum pump within the ejector-type vacuum pump assembly, and a method for controlling the vacuum level in the vacuum chamber of the ejector-type vacuum pump within the ejector-type vacuum pump assembly described herein.

The application discloses a method and device for constructing a high-speed airflow shearing liquid membrane flow slip boundary condition, equipment and medium, and relates to the technical field of fluid mechanics, which comprises the following steps: constructing a liquid membrane flow N-S equation, a liquid membrane interface kinematics boundary equation and an interface stress balance equation of a target high-speed aircraft under high-speed airflow, and simplifying the equations by using a lubrication approximation method and temperature variation of the target high-speed aircraft under high-speed airflow to obtain target simplified equations; performing numerical simulation on airflow shearing force driven liquid membrane movement of the target high-speed aircraft under high-speed airflow based on the target simplified equations to obtain liquid membrane displacement data of the target high-speed aircraft under high-speed airflow; and fitting the liquid membrane displacement data with airflow shearing force of the target high-speed aircraft under high-speed airflow to obtain target slip boundary conditions corresponding to liquid membrane flow of the high-speed airflow when shearing the liquid membrane. In this way, the aircraft development efficiency can be improved.

The present invention relates to an ultra-micro portable seawater desalination device, belonging to the field of seawater desalination technology. It comprises a housing, a reverse osmosis membrane element, an isobaric double-acting pump, a handle push-pull drive assembly, a base assembly, an ultrafilter and a pre-filter; continuously pressing the handle push-pull drive assembly drives the piston to move up and down, controlling the opening and closing of the water inlet check valve and the non-return check valve. The seawater enters the water inlet tank after being filtered by the pre-filter and the ultrafilter, and enters the pressure tank through the seawater outlet hole; when the pressure in the device reaches the reverse osmosis pressure, the seawater enters the reverse osmosis membrane element, and the seawater desalinated by the reverse osmosis membrane flows from the fresh water tank at the bottom of the central tube through the fresh water channel to the fresh water outlet interface, and the brine in the reverse osmosis membrane flows from the brine flow channel to the brine outlet interface. The device is small in size, manually driven, energy-saving and environmentally friendly, portable and reliable, and desalinated seawater is standard drinking water that meets the needs of emergency life protection.

The industrial film flow page turning device and method comprises a horizontal fixed plate, a lead screw penetratingly connected in the middle part of the horizontal fixed plate, and a vertical plate connected with the lower end of the lead screw and parallel to the horizontal fixed plate, the lower side of the horizontal fixed plate is provided with a lead screw female seat matched with the lead screw, one side of the lead screw is provided with a motor fastened on the horizontal fixed plate through a motor mounting seat, a first belt pulley driven by the motor, and a belt of a second belt pulley sleeved on the first belt pulley and linked to the outer periphery of the lead screw, and the two ends of the vertical plate are both provided with a cylinder for implementing a downward pressing action and drivingly connected with a grabbing device at the output end; the present application uses the mode of adsorption grabbing and cooperation clamping to turn pages, changes the mode of using adhesive tape to stick and turn pages, and does not have the sticking trace, saves the consumable cost, is accurate in grabbing, and does not have the multiple page turning condition caused by sticking.

An ejector-type vacuum pump assembly containing a stabilizing membrane flow valve, wherein a pilot flow of pressurized air is used to regulate a main flow of pressurized air for driving an ejector-type vacuum pump is disclosed. The pilot flow is led to a downstream side of the membrane flow valve and is fed to the ejector of the ejector-type vacuum pump along with the main flow of pressurised air. The ejector-type vacuum pump assembly is primarily intended for automated gripping operations using a suction gripper. Also disclosed is a flow control unit for controllably exiting a flow of pressurized air to be fed to an ejector-type vacuum pump in the ejector-type vacuum pump assembly, and a method of controlling a vacuum level in a vacuum chamber of an ejector-type vacuum pump in an ejector-type vacuum pump assembly as described herein.

The utility model belongs to the technical field of brine treatment, and relates to a brine treatment system which comprises a brine refining unit, a filtering unit and an ammonia removal unit, the brine refining unit is communicated with the salt well; the filtering unit comprises a first inorganic membrane, a second inorganic membrane and a third inorganic membrane which are sequentially connected in series in the flowing direction of brine, and the water outlet part of the second inorganic membrane flows back to the water inlet end of the first inorganic membrane; the ammonia removal unit is communicated with the water outlet end of the first inorganic membrane; the water outlet part of the second inorganic membrane flows back to the water inlet end of the first inorganic membrane to dilute brine at the water inlet end of the first inorganic membrane, so that the concentration of the brine at the water inlet end of the first inorganic membrane is reduced, the risk of forming a deposition layer on the surface of the first inorganic membrane is reduced, and the stability and reliability of the brine filtering system are improved; and the brine at the water outlet end of the second inorganic membrane is subjected to secondary filtration through the circulating filtration arrangement that the effluent part of the second inorganic membrane flows back to the first inorganic membrane, so that the resource utilization rate of the brine is increased.

This utility model discloses a reverse osmosis test device for nuclear power industry wastewater, including a main frame consisting of a horizontally arranged chassis and a support. A high-pressure pump is mounted on the chassis, and a reverse osmosis membrane is detachably mounted on the support. The outlet of the high-pressure pump is connected to the inlet of the reverse osmosis membrane via a pipe. The clear water outlet of the reverse osmosis membrane is connected to a pipe, and the high-concentration water outlet of the reverse osmosis membrane flows back to the inlet of the reverse osmosis membrane via a pipe. The reverse osmosis membrane is connected to the pipe via a quick-release connecting device. Roller components are provided at the bottom of the chassis. This utility model allows for the replacement of different models of reverse osmosis membranes, facilitating multiple tests with different models of reverse osmosis membranes based on varying raw water data requirements. Furthermore, the reverse osmosis membrane is easy to install and remove, and the operation is simple.

The membrane modules of the present disclosure enable facile operation of post-market modified hollow fibers and flat sheet stacks in laboratory testing and preparatory lab scale. The modules allow for multiple use and reuse of different types of modified fibers or stacks as they provide a mechanism for removal, modification and further re-installment of different membranes, expanding the range of separation capabilities and accommodating complex membrane purification needs. The module is designed to facilitate ultra-small-scale (μl-ml) separations in a variety of membrane flow orientations. This feature is attractive when working with expensive, low-quantity, raw materials, as it reduces waste and increases utilization efficiency.

A jet vacuum pump assembly including a stabilized diaphragm flow valve is disclosed in which a pilot flow of compressed air is used to regulate a main flow of compressed air driving a jet vacuum pump. The pilot air flow is guided to the downstream side of the diaphragm flow valve and is supplied together with the main air flow of compressed air to the ejector of the injection vacuum pump. The jet type vacuum pump assembly is mainly used for automatic grabbing operation through a suction cup type grabber. A method of controlling the degree of vacuum within a vacuum chamber of a jet vacuum pump in a jet vacuum pump assembly disclosed herein is also disclosed.

This utility model relates to the field of fabric rolling machine technology, specifically a fabric rolling machine for processing reverse osmosis membrane flow channel fabric that facilitates roll changing. It includes: a frame, including a support, with a drive motor fixedly connected to the surface of the support, and a rotating shaft fixedly connected to the output shaft of the drive motor; and a roll changing mechanism, including a fixing block fixedly connected to the surface of the rotating shaft. This utility model achieves quick roll changing by using the fixed connections of the fixing block and rubber damping layer, the fixing block and spring, the spring and connecting plate, the connecting plate and insert rod, the connecting plate and pull rod, the insert rod and mounting plate, and the mounting plate and fabric rolling roller. After the drive motor stops, pulling the pull rod moves the insert rod backward, causing the insert rod to detach from the mounting plate, thus allowing the mounting plate and fabric rolling roller to be disassembled from the rotating shaft. This facilitates quick roll changing for the convenience of operators.

Disclosed is an ejector-type vacuum pump assembly comprising a stabilized membrane flow valve, wherein a pilot flow of pressurized air is used to regulate the main flow of pressurized air for driving the ejector-type vacuum pump. [Solution] The pilot flow is guided downstream of the membrane flow valve and supplied to the ejector of the ejector-type vacuum pump along with the main stream of pressurized air. The ejector-type vacuum pump assembly is primarily intended for automatic gripping operations using a suction gripping section. A method for controlling the vacuum level in the vacuum chamber of the ejector-type vacuum pump within the ejector-type vacuum pump assembly described herein is also disclosed.

The invention provides a calandria frostless operation system and a frostless operation method for a calandria refrigeration house, and relates to the technical field of refrigeration house defrosting, the calandria frostless operation system comprises a dehumidification device used for outputting dry air with the dew point temperature lower than the evaporation temperature of a refrigeration house refrigerator; the tube bank assembly is connected with the dehumidification equipment; the input end of the membrane flow assembly is communicated with the dehumidification equipment, and dry air flowing through the membrane flow assembly forms a dry air membrane on the outer surface of the calandria assembly; the dry air film is used for isolating humid air which permeates from the door opening of the refrigeration house and is emitted by articles in the house, frosting on the surface of the calandria is avoided, and the long-standing problems of frosting, defrosting and defrosting of the calandria house are solved; a good refrigeration house environment is created, and the running cost of the pipe bank is reduced.