摘要:
A membrane pump (1) has a crank drive (5) whose connecting rod (6) is joined to an elastic membrane (7) with a membrane top side (13) fitted to a compression chamber (10) at the top dead centre of the crank drive (13) and with a central undercut opening at the bottom side (14) of the membrane opposite to the compression chamber (10). A fitting fastening part (15) joined to the connecting rod is inserted into the fastening opening. A dimensionally stable membrane support (17) fittingly supports the membrane (7) by its bottom side (14) at least in one central area. The disclosed membrane pump (1) is characterised in that the membrane support (17) lies in a top dead centre on the membrane bottom side (14), without squeezing it and substantially over its whole surface. A partial area of the support (17) fitted to the pumping chamber wall (9), taking into consideration the variation in cross-section of the membrane, follows the central area of the support (17) designed as a centering aid. The diameter of the fastening part (15) is smaller than one third of the cross-section of the membrane fitted to the pumping chamber wall (9). The membrane (7) of the disclosed membrane pump (1) is characterised by a large elastic zone (A) which neutralises undesirable stresses within the membrane and enables a membrane pump (1) to be obtained with a relatively large displacement volume.
摘要:
The invention relates to a method for evacuating a wet or liquid conveying medium from the treatment chamber (2) of a treatment device (1) by means of a conveying device (3) with a single- or multi-stage suction pump (4). Said conveying medium is cooled as it is evacuated and as it passes along the flow channel, so that the medium in the conveying device (3) is in a liquid aggregate state or is transformed into such a state. The invention also relates to a treatment device for carrying out the inventive method, and to a single- or multi-stage suction pump for a treatment device of this type. According to the invention, the conveying medium is cooled at least in the area of at least one pump head (7) of the suction pump (4) and/or of a connecting channel interconnecting two pump stages of a multi-stage suction pump, said pump stages following each other in the direction of flow. This prevents the condensate or condensate film left in the suction pump from re-evaporating. The at least one pump head (7) and/or the connecting channel is/are also cooled to below the evaporation or boiling temperature for the given evacuation pressure.
摘要:
The invention relates to a method for evacuating a wet or liquid conveying medium from the treatment chamber (2) of a treatment device (1) by means of a conveying device (3) with a single- or multi-stage suction pump (4). Said conveying medium is cooled as it is evacuated and as it passes along the flow channel, so that the medium in the conveying device (3) is in a liquid aggregate state or is transformed into such a state. The invention also relates to a treatment device for carrying out the inventive method, and to a single- or multi-stage suction pump for a treatment device of this type. According to the invention, the conveying medium is cooled at least in the area of at least one pump head (7) of the suction pump (4) and/or of a connecting channel interconnecting two pump stages of a multi-stage suction pump, said pump stages following each other in the direction of flow. This prevents the condensate or condensate film left in the suction pump from re-evaporating. The at least one pump head (7) and/or the connecting channel is/are also cooled to below the evaporation or boiling temperature for the given evacuation pressure.
摘要:
The invention relates to a method for evacuating a wet or liquid conveying medium from the treatment chamber (2) of a treatment device (1) by means of a conveying device (3) with a single- or multi-stage suction pump (4). Said conveying medium is cooled as it is evacuated and as it passes along the flow channel, so that the medium in the conveying device (3) is in a liquid aggregate state or is transformed into such a state. The invention also relates to a treatment device for carrying out the inventive method, and to a single- or multi-stage suction pump for a treatment device of this type. According to the invention, the conveying medium is cooled at least in the area of at least one pump head (7) of the suction pump (4) and/or of a connecting channel interconnecting two pump stages of a multi-stage suction pump, said pump stages following each other in the direction of flow. This prevents the condensate or condensate film left in the suction pump from re-evaporating. The at least one pump head (7) and/or the connecting channel is/are also cooled to below the evaporation or boiling temperature for the given evacuation pressure.
摘要:
The invention relates to a method for conveying damp gases by means of a conveyor device (1) and also relates to a conveyor device (1) for carrying out said method. The conveyor device (1) has at least one feed pump (2) with an oscillating reciprocating piston (3) in a delivery chamber (7). In order to dry the conveyor device (1) effectively in the region of the delivery chamber (7), the delivery chamber (7) of the at least one feed pump (2) is intermittently aerated at various intervals in time using an aeration device (15) while the conveyor device (15) is in orperation.
摘要:
A diaphragm pump, in particular a microdiaphragm pump, has a crank drive (1) with a connecting rod (2) and an elastic diaphragm (3) joined to the connecting rod (2). At its rear side opposite to the compression chamber, the diaphragm (3) is provided with at least one undercut fastening hole (8) into which the matching fastening end of the connecting rod is inserted. In order to secure the diaphragm (3) as accurately as possible on the connecting rod (2), so that neither radial nor axial forces can move it out of its position relative to the connecting rod (2), and so that the diaphragm (3) is exposed to as little as possible additional flexing work, the connecting rod (2) has at its fastening end a supporting surface (4) for supporting from below the central diaphragm area which is provided with a supporting surface (5), and one or several fastening projections (6) which extend in the axial direction of the connecting rod (2) over the supporting surface (4) of the connecting rod (2) form-fittingly engage the central diaphragm area provided with at least one fastening hole (8).
摘要:
A diaphragm pump, in particular a microdiaphragm pump, has a crank drive (1) with a connecting rod (2) and an elastic diaphragm (3) joined to the connecting rod (2). At its rear side opposite to the compression chamber, the diaphragm (3) is provided with at least one undercut fastening hole (8) into which the matching fastening end of the connecting rod is inserted. In order to secure the diaphragm (3) as accurately as possible on the connecting rod (2), so that neither radial nor axial forces can move it out of its position relative to the connecting rod (2), and so that the diaphragm (3) is exposed to as little as possible additional flexing work, the connecting rod (2) has at its fastening end a supporting surface (4) for supporting from below the central diaphragm area which is provided with a supporting surface (5), and one or several fastening projections (6) which extend in the axial direction of the connecting rod (2) over the supporting surface (4) of the connecting rod (2) form-fittingly engage the central diaphragm area provided with at least one fastening hole (8).
摘要:
The invention relates to a vapor sterilization device having a sterilization chamber and a vacuum pump attached thereto. Conventional vapor sterilization devices, so-called autoclaves, normally have an additional outlet and an associated electromagnetic valve so that the sterilization or vapor pressure present in the sterilization chamber can be lowered. In order to be able to eliminate said additional outlet with an electromagnetic valve, the suction inlet, the sealing chamber and the pressure outlet of the inventive vacuum pump serve as an outlet duct for the vapor exiting from the sterilization chamber during relaxation. Since the parts of the pump contacting the outflow medium in the inventive vacuum pump are made of poorly heat-conductive material, undesired heating of the pump head resulting from vapor shock is effectively avoided and no complicated air or water cooling of the pump is required.
摘要:
The invention relates to a method for conveying damp gases by means of a conveyor device (1) and also relates to a conveyor device (1) for carrying out said method. The conveyor device (1) has at least one feed pump (2) with an oscillating reciprocating piston (3) in a delivery chamber (7). In order to dry the conveyor device (1) effectively in the region of the delivery chamber (7), the delivery chamber (7) of the at least one feed pump (2) is intermittently aerated at various intervals in time using an aeration device (15) while the conveyor device (15) is in orperation.
摘要:
The invention relates to a vapor sterilization device having a sterilization chamber and a vacuum pump attached thereto. Conventional vapor sterilization devices, so-called autoclaves, normally have an additional outlet and an associated electromagnetic valve so that the sterilization or vapor pressure present in the sterilization chamber can be lowered. In order to be able to eliminate said additional outlet with an electromagnetic valve, the suction inlet, the sealing chamber and the pressure outlet of the inventive vacuum pump serve as an outlet duct for the vapor exiting from the sterilization chamber during relaxation. Since the parts of the pump contacting the outflow medium in the inventive vacuum pump are made of poorly heat-conductive material, undesired heating of the pump head resulting from vapor shock is effectively avoided and no complicated air or water cooling of the pump is required.