23 results about "Rotary vane pump" patented technology

The utility model discloses a magnetic rotary vane pump, and belongs to the technical field of rotary vane pumps. According to the magnetic rotary vane pump, the pump shaft input end is combined with the inner magnetic cylinder, and the isolation sleeve of the inner magnetic cylinder is connected with the pump body in a sealing manner, so that the pump body is absolutely sealed at the pump shaft input end, the problem of medium leakage at the pump shaft input end is avoided, and the safety of the pump body during working is improved; meanwhile, an independent oil chamber is adopted in the pump body to lubricate the mechanical seal of the pump shaft, so that the stability of the mechanical seal under long-time work is guaranteed, the mechanical seal can operate for a long time under the medium gasification environment, the service life of the mechanical seal is prolonged, and the risk of medium leakage is further reduced; the rotary vane pump is scientific and reasonable in design, simple and novel in structure, convenient to machine, low in manufacturing cost and high in practicability.

The present disclosure relates to a rotary vane pump (1) comprising a pump housing (2), a stator (14), a rotor (5), a plurality of vanes (12) housed in the rotor (5) so as to be displaceable in a radial direction, thereby delimiting a plurality of pump chambers (30) between the vanes themselves and the stator (14) and the rotor (5), wherein a radially inner cam surface (16) is provided on which the vanes (12) rest, wherein secondary chambers (32) are delimited between the cam surface (16) and the rotor (5) in the radial direction and between the vanes (12) in a circumferential direction, wherein the secondary chambers are assigned a suction inlet (36) and a pressure outlet (38).

Method for reducing exposure to vapors and / or dusts from equipment (1) for vacuum-based coating processes, wherein an operating vacuum is generated in the equipment (1), wherein the equipment (1) has a first, second and third vacuum chamber (2, 2', 2"), wherein the vacuum chambers (2, 2', 2") are connected in series, wherein the second vacuum chamber (2') is arranged between the first and third vacuum chambers (2, 2") and is designed as a process chamber, wherein - in a first process step of the apparatus (1) a gas is supplied, wherein - in a second process step the gas is removed from the second vacuum chamber (2'), whereby - in a third process step, the gas removed from the second vacuum chamber (2') is purified and made available again for feeding into the first and third vacuum chambers (2, 2"), wherein the first process step, the second process step and the third process step are carried out cyclically one after the other, characterized in that at least one rotary lobe pump (7) is used for the first and second process steps, which removes the gas from the second vacuum chamber (2') and supplies it to the first and third vacuum chambers (2, 2").

A pump with variable suction / discharge amount and a transmission drive device and a driving method thereof. The pump is a rotary vane pump having a vane chamber body. The vane chamber body is composed of a fixed wall member, a movable wall member, a movable vane chamber sleeve and a vane rotor. The vane chamber is extendable / retractable in an axial direction of the vane rotor. At least two pumps are assembled in communication with each other to form a closed loop for the active pump to drive the passive pump. In operation, passive the vane chambers of the active pump and the passive pump are automatically extended / retracted and modulated until the driving force and the load resistance achieve a balanced state passive, the vane chambers and the rotational speeds of the active pump and the passive pump are automatically adjusted to be in inverse proportion to each other.

The application discloses a turning tool and machining method for eccentric three-jaw of a primary stator of a rotary vane pump, which comprises a hydraulic chuck and an eccentric three-jaw, a sliding seat is arranged on the hydraulic chuck, the eccentric three-jaw is connected with the hydraulic chuck through the sliding seat, an eccentric hole is arranged on the inner side of the eccentric three-jaw, a reference outer circle is arranged on the outer side of the eccentric three-jaw, the axis of the hydraulic chuck is eccentrically arranged with the axis of the eccentric hole of the eccentric three-jaw, the axis of the hydraulic chuck is coaxially arranged with the axis of the reference outer circle of the eccentric three-jaw, and the hydraulic chuck is installed on a main shaft of a machine tool. The eccentric three-jaw turning tool and machining method solve the technical problems of the existing technology, such as difficulty in putting in, poor precision of a numerical control milling machine and a self-centering three-jaw chuck, and high-precision over-tolerance of an eccentric distance.

A rotary vane pump is provided that includes a rotor configured for being rotated about a center axis and a vane movably positioned in a radially extending slot formed in the rotor. The vane includes a ferrimagnetic material. The pump further includes an actuator positioned in the slot and configured for moving the vane in the slot. The actuator is configured for forcing the vane away from the center axis as the rotor is rotated about the center axis. The pump further includes a variable inductance coil fixed with the rotor and wrapped around the vane. The vane is movable with respect to the variable inductance coil and an inductance of the variable inductance coil is dependent upon an axial position of the ferrimagnetic material with respect to the variable inductance coil.

An assembly for detecting wear of a vane of a rotary vane pump, the assembly comprising: a vane configured to be mounted in a radial slot of a rotor of a rotary vane pump, the vane having a vane body of non-electrically conductive material, the vane body configured to, in use, extend from the slot to contact an electrically earthed housing of the rotor; the vane being provided with a marking having at least one characteristic that varies in the radial direction; the assembly further comprising a sensing device fixed relative to the housing and arranged to read the marking at a predetermined radial distance from the housing, whereby the characteristic of the marking that is read by the sensing device is indicative of wear of the vane.

The invention relates to the technical field of coating equipment, and particularly discloses oxide high-barrier coating equipment and a vacuum winding system thereof.The oxide high-barrier coating equipment comprises a vacuum coating box, an exhaust pipe is fixedly connected to one side of the top end of the vacuum coating box, the exhaust pipe is fixed to the vacuum coating box, and a first pump body, a second pump body and a third pump body are installed on the exhaust pipe; the low-efficiency air exhaust mode of a traditional single vacuum pump is changed, the primary rotary vane pump rapidly pre-exhausts most air, the intermediate roots pump increases the air exhaust speed in a relay mode, the high-grade molecular pump accurately achieves the high vacuum degree, all the pump bodies cooperate in a division mode, and the air exhaust efficiency is improved. The time for the vacuum coating chamber to reach the target vacuum degree is remarkably shortened, the overall efficiency of the vacuum pumping system is greatly improved, meanwhile, gas residues are effectively reduced in the multi-stage pumping process, the external air permeation risk is reduced, a more stable vacuum environment is created for coating, and the coating quality and effect are improved.

The invention relates to the field of thawing, in particular to a food thawing system special for vacuum sublimation rehydration thawing. Comprising a vacuum unfreezing box shell, a vacuum unfreezing box door, a rotating shaft, a sealing strip, a drying filter, a roots pump, a rotary vane pump, a vacuum exhaust pipe section, a liquid viewing mirror, an oil filling position, an oil discharging position, a heating plate, a heat insulation plate, a storage net, a supporting stand column, a supporting buckle, a four-claw hanging bracket and the like. According to the system, the vacuum thawing box is connected with the vacuum system, the heating plate system and the rehydration system, so that a vacuum sublimation stage and a rehydration heating stage in vacuum sublimation rehydration thawing can be realized, and frozen products can be efficiently thawed; and the system is provided with a part for adjusting the position of the heating plate, so that the system is suitable for a plurality of rehydration ports and the like in different unfreezing scenes, working condition parameters can be conveniently adjusted, and the vacuum sublimation rehydration unfreezing effect is further improved. Through the design of the invention, a new thought is provided for optimization of a food thawing process.

The utility model relates to the technical field of rotary vane air extracting pumps, and discloses a rotary vane air extracting pump base which comprises a connecting base, a positioning block fixedly installed on the side wall of the connecting base and a connecting assembly arranged on the lateral position of the connecting base, and the connecting assembly comprises a buffering mechanism arranged on the lateral position of the connecting base. An auxiliary mechanism is arranged at the side position of the connecting base, the buffer mechanism comprises a friction block and a rectangular plate, the friction block is fixedly mounted at the bottom of the mounting plate, the rectangular plate is fixedly mounted on the inner wall of the connecting base, a baffle is fixedly mounted at the top of the rectangular plate, and a rubber block is fixedly mounted on the side wall of the baffle. The base structure solves the problems that some existing base structures cannot effectively absorb shock, so that a pump body is prone to shaking, and a common metal base is poor in vibration energy absorption effect, so that the service life and the working efficiency of an air extracting pump are affected.

The utility model discloses a filtering device of a vacuum pump, which comprises a vacuum pump, a first filter and an oil path block, vacuum pump oil is arranged in the vacuum pump, the vacuum pump is provided with an oil inlet and an oil outlet, an input port of the first filter is communicated with the oil outlet, and the oil path block is provided with a first oil path and a second oil path. The first oil way is communicated with an output port of the first filter, an input port of the second filter is communicated with the first oil way, an output port of the second filter is communicated with the second oil way, and the second oil way is communicated with the oil inlet. The vacuum pump oil is secondarily filtered through the external filtering device, impurities in the vacuum pump oil can be effectively removed, the service life of the vacuum pump oil is prolonged, and a vacuum pump is prevented from being damaged; the whole structure is convenient to replace and maintain and low in cost; and the external filtering device is convenient for observing the oil condition of the vacuum pump and is also beneficial to improving the heat dissipation of the rotary vane pump.

The invention relates to a rotary vane pump (1) for conveying a fluid to be conveyed, with a housing (2), with a rotor receiving chamber (3) and a lubricant chamber (14). An eccentrically arranged rotor (4) is provided in a rotor receiving chamber (3) in such a way that at least one conveying chamber (11) is produced, the volume of which varies cyclically during rotation of the rotor (4). Furthermore, the rotary vane pump (1) has an intake channel (12) for feeding the fluid to be conveyed into the conveying chamber (11) and a discharge channel (13) for discharging the fluid to be conveyed out of the conveying chamber (11) in the direction of the lubricant chamber (14), wherein a valve device (21) is provided between the discharge channel (13) and the lubricant chamber (14) in order to prevent a backflow of fluid, in particular of lubricant and / or of fluid to be conveyed, from the lubricant chamber (14) into the conveying chamber (11). The rotary vane pump (1) is furthermore designed and set up in such a way that the discharge channel (13) is arranged in such a way that it opens into the lubricant chamber (14). Furthermore, the rotary vane pump (1) has at least one ventilation channel (26), which is fluidically connected by a conveying chamber end (28) to the conveying chamber (11) and fluidically connected by a ventilation end (27) to a chamber outside the conveying chamber (11), as well as at least one compensation channel (29), which is fluidically connected by a conveying chamber end (31) to the conveying chamber (11) and fluidically connected by a compensation end (30) to the lubricant chamber (14). In this way, the rotary vane pump (1) is designed and set up in such a way that the compensation end (30) opens into the lubricant chamber (14) below the lubricant level (24) in an operating state of the rotary vane pump (1) and opens into the lubricant chamber (14) above the lubricant level (34) in a resting state of the rotary vane pump (1).

The present application discloses a fully automatic batch leak detection system for vacuum plugs and a leak detection method thereof, comprising: a leak detection unit, a transfer unit, a vacuum unit, a helium mass spectrometer, an air intake unit and a controller, wherein the leak detection unit comprises a pair of leak detection boxes for alternately performing helium leak detection, each leak detection box having a plurality of built-in positioning fixtures, each positioning fixture having a vacuum port in the leak detection box that can cooperate with the vacuum plug; the transfer unit comprises a conveyor belt for conveying the vacuum plugs in a front-to-rear direction and a manipulator for transferring the vacuum plugs between the conveyor belt and the vacuum ports; the vacuum unit comprises a rotary vane pump for loading a suction force and a vacuum pipeline connected between the rotary vane pump and the leak detection unit; the helium mass spectrometer is used to detect the helium concentration in the vacuum pipeline; the air intake unit conveys helium into the corresponding leak detection box; the controller controls the operation of each unit and the helium mass spectrometer; the present application significantly improves production efficiency and product quality, and ensures the detection accuracy of helium leak detection.

1. The name of the design product: vacuum pump unit (VMU120). 2. The use of the design product: vacuum obtaining equipment composed of single-stage rotary vane pump and roots pump. 3. The design points of the design product: in shape. 4. The picture or photo that best indicates the design points: perspective view 2.

The utility model discloses a transformer vacuum-pumping device which comprises an air-pumping main pipe, a first-stage pump, a second-stage pump, a third-stage pump, an oil-gas separator and a vacuum gauge are sequentially connected in series from the upstream end to the downstream end of the air-pumping main pipe, and a first bypass pipe connected with the second-stage pump in parallel and a second bypass pipe connected with the third-stage pump in parallel are further arranged on the air-pumping main pipe. The first bypass pipe is provided with a first electromagnetic valve, the second bypass pipe is provided with a second electromagnetic valve, the first-stage pump is a rotary vane pump or a screw pump, the second-stage pump is a roots pump, and the third-stage pump is a molecular pump. Firstly, a first-stage pump is started to pump the interior of a transformer oil tank to a first set vacuum pressure value, then a second-stage pump is started to pump to a second set vacuum pressure value, and finally a third-stage pump is started to pump to a set target vacuum pressure value, so that water and dissolved gas remaining in an insulating plate and transformer oil are pumped out; the extracted gas enters the pump set after oil is separated through the oil-gas separator, pollution to the main gas extraction pipe and the pump set is effectively avoided or relieved, and the service life of the vacuumizing equipment is prolonged.

The application relates to the technical field of vacuum measurement, in particular to a capacitive diaphragm vacuum gauge sensor packaging device, which comprises a mounting table, a packaging unit, a first rotary vane pump, a second rotary vane pump, a high vacuum pump and a water cooling system, wherein: mounting holes are arranged on the mounting table in a ring array; the packaging unit is fixedly connected with the mounting holes through standard flanges and comprises a baking and degassing cover, a sensor to be packaged and a reference cavity packaging assembly; a vacuum pipeline is arranged in the middle of the reference cavity packaging assembly; one end of the vacuum pipeline is sequentially connected with the high vacuum pump and the second rotary vane pump; the first rotary vane pump is connected with an air outlet on the top of the baking and degassing cover; and the water cooling system is communicated with the bottom of the baking and degassing cover through a water inlet and a water outlet. The capacitive diaphragm vacuum gauge sensor is batch-packaged, directional and controllable heating of the getter is realized through a heating sleeve pipe arranged on the reference cavity packaging assembly, and the influence of getter heating activation on the thermal strain of the metal diaphragm is eliminated.

The invention provides a compact type rotary plate pump. Wherein the plurality of rotating plates (13) are uniformly embedded on the rotor (12); when the rotor (12) rotates, the rotating plates (13) are driven to rotate and cling to the inner contour surface of the stator (11) under the action of mutual thrust between the rotating plates (13). The outer surface of the rotor (12), the inner surface of the stator (11) and the plurality of rotary plates (13) form a plurality of sealed working cavities; when the rotor (12) and the rotating plate (13) on the rotor (12) rotate at a high speed, the bearing (14) and the bearing (15) are used for limiting the axial movement task of the rotor (12) and the rotating plate (13), and it is ensured that the rotor (12) and the rotating plate (13) operate at the correct axial position. The rotor (12) is subjected to hydraulic force in the rotating process, and a bearing (14) and a bearing (15) need to bear the radial force. The contradiction between reduction of the size of the pump and the unit displacement requirement is solved, and the light weight and compactness of the pump are improved.

The invention relates to a positive displacement pump, in particular a rotary vane pump for delivering a fluid for a consumer of a steering system, comprising a suction side and a pressure side. The positive displacement pump has at least one cam ring (2), a rotor (3), a drive shaft (4) with an axis of rotation (x), a plurality of vanes (5), a control plate (6a), an end plate (6b) and / or a cover (11). The lateral surface of the rotor (3) has slots which extend at least approximately radially over the width of the lateral surface and in which the vanes (5) are displaceably mounted, said vanes (5) being guided along the inner contour of the cam ring (2) when the rotor (3) is rotated. The control plate (6a), the end plate (6b), and / or the cover (11) contain a rear vane channel (9) which cooperates with rear vane compartments in order to press the vanes (5) against the cam ring (2), and the control plate (6a) and the end plate (6b) or the cover (11) enclose the cam ring (2) and the rotor (3) between one another in the axial direction. A respective sealing surface (10) is defined by the contact surface of one of the end faces of the rotor (3), said contact surface contacting the control plate (6a) and the end plate (6b) or the cover (11), and the sealing surface (10) extends in the radial direction over a sealing distance (10a), in particular between the drive shaft (4) and the rear vane channel (9). According to the invention, the sealing section (10a) of at least one of the sealing surfaces (10) increases in the direction from the suction side to the pressure side such that the sealing surface (10) is narrower at the transition from the pressure side to the suction side in the radial direction than at the transition from the suction side to the pressure side.

The utility model relates to a rotary vane pump technical field especially, it relates to a spring formula rotary vane two -stage pump, solved the rotary vane in the prior art unable to completely adhere to the pump body inner chamber, leading to rotary vane sliding is not smooth, appears the problem such as impact noise. A spring formula rotary vane two -stage pump, including support seat, the top fixed mounting of support seat has rotary vane two -stage pump body, and rotary vane two -stage pump body includes rotary motor, senior pump body. The utility model, through installing in the inner portion of senior rotary vane and low -grade rotary vane respectively has spiral spring one and spiral spring two, can effectively support rectangle flake one and rectangle flake two, make rectangle flake one and rectangle flake two completely adhere to the inner chamber of senior pump body and low -grade pump body, avoid the collision of both with the inner chamber of senior pump body and low -grade pump body, thereby when improving the sliding smoothness of rectangle flake one and rectangle flake two, prolong the service life of rotary vane two -stage pump body.

1. The name of the design product: magnetic no-leakage rotary vane pump. 2. The use of the design product: for rotary vane pump. 3. The design points of the design product: in shape. 4. The picture or photo that can best show the design points: perspective view 1. 5. The bottom view of the design product is the face that cannot be seen when in use, so the bottom view is omitted; the design points of the top view have been embodied in other views, so the top view is omitted.

A vane for a positive displacement pump wherein the vane (1) comprises a front side (2), a rear side (3), at least one contact surface (4) and at least two non-contact surfaces (5), and the contact surface (4) comprises at least one guide surface (7) and at least one cutting surface (8).

The invention relates to a rotary vane pump (1) for conveying a fluid to be conveyed, with a housing (2), with a rotor receiving chamber (3) and a lubricant chamber (14). An eccentrically arranged rotor (4) is provided in a rotor receiving chamber (3) in such a way that at least one conveying chamber (11) is produced, the volume of which varies cyclically during rotation of the rotor (4). Furthermore, the rotary vane pump (1) has an intake channel (12) for feeding the fluid to be conveyed into the conveying chamber (11) and a discharge channel (13) for discharging the fluid to be conveyed out of the conveying chamber (11) in the direction of the lubricant chamber (14), wherein a valve device (21) is provided between the discharge channel (13) and the lubricant chamber (14) in order to prevent a backflow of fluid, in particular of lubricant and / or of fluid to be conveyed, from the lubricant chamber (14) into the conveying chamber (11). The rotary vane pump (1) is furthermore designed and set up in such a way that the discharge channel (13) is arranged in such a way that it opens into the lubricant chamber (14). Furthermore, the rotary vane pump (1) has at least one ventilation channel (26), which is fluidically connected by a conveying chamber end (28) to the conveying chamber (11) and fluidically connected by a ventilation end (27) to a chamber outside the conveying chamber (11), as well as at least one compensation channel (29), which is fluidically connected by a conveying chamber end (31) to the conveying chamber (11) and fluidically connected by a compensation end (30) to the lubricant chamber (14). In this way, the rotary vane pump (1) is designed and set up in such a way that the compensation end (30) opens into the lubricant chamber (14) below the lubricant level (24) in an operating state of the rotary vane pump (1) and opens into the lubricant chamber (14) above the lubricant level (34) in a resting state of the rotary vane pump (1).

The nanoscale powder preparation equipment comprises a main platform, a metal evaporation assembly, a powder collecting assembly and a vacuum obtaining system, an equipment body is arranged on the outer side of the upper end of the main platform, a front door is installed at the front end of the equipment body through hinges, and a vacuum cavity is formed in the equipment body; a metal evaporation assembly is arranged on the lower side of the interior of the equipment body, and a powder collecting assembly located above the metal evaporation assembly is arranged in the middle of the equipment body. A vacuum obtaining system is installed in the main platform and composed of a rotary vane pump and a molecular pump, and a vacuum pipeline is installed above the molecular pump. By integrating high vacuum, induction heating, high-speed collection, intelligent control and other technologies, efficient, low-cost, high-quality and flexible preparation of nanoscale powder is achieved, and the problems of high cost, wide diameter distribution, low yield, agglomeration, impurity introduction and the like in an existing method are solved.