A pump includes a housing which delimits a pressure chamber. The pressure chamber has a pressure chamber feed line and a pressure chamber discharge line. By a displacement device arranged displaceably in the pressure chamber, a fluid flowing into the pressure chamber via the pressure chamber feed line can be exposed to a pressure and can be expelled from the pressure chamber via the pressure chamber discharge line. Furthermore, the pump has a cooling system for cooling the housing of the pump. The cooling system has at least one heat pipe, containing a heat transfer fluid, and at least one heat sink. The at least one heat pipe has a housing contact region for providing heat-conducting contact between the heat pipe and the housing, and, arranged at a distance therefrom, a heat sink contact region for providing heat-conducting contact between the heat pipe and the at least one heat sink.
The invention relates to a pump (1) comprising a housing (3) which delimits a pressure chamber (2), the pressure chamber (2) having a pressure chamber feed line (4) and, arranged at a distance therefrom, a pressure chamber discharge line (5). By means of a displacement device arranged displaceably in the pressure chamber (2), a fluid flowing into the pressure chamber (2) via the pressure chamber feed line (4) can be exposed to a pressure and can be expelled from the pressure chamber (2) via the pressure chamber discharge line (5). Furthermore, the pump (1) has a cooling system for cooling the housing (2) of the pump (1). The cooling system has at least one heat pipe (12), containing a heat transfer fluid, and at least one heat sink (8), the at least one heat pipe (12) having a housing contact region (13) for providing heat-conducting contact between the heat pipe (12) and the housing (2), and, arranged at a distance therefrom, a heat sink contact region (14) for providing heat-conducting contact between the heat pipe (12) and the at least one heat sink (8). When the cooling system is used as intended, the heat of the housing (2) is transferred via the at least one heat pipe (12) from the housing (2) to the at least one heat sink (8).
F04B 43/02 - Machines, pumps, or pumping installations having flexible working members having plate-like flexible members, e.g. diaphragms
F04B 45/04 - Pumps or pumping installations having flexible working members and specially adapted for elastic fluids having plate-like flexible members, e.g. diaphragms
The invention relates to a rotary evaporator (1), including an equipment stand (2) with a protruding guide tower (3) which has a holder on which an evaporation vessel (5) is pivotably retained about a horizontal pivot axis (42). In one embodiment of the invention, the holder includes a holding part connected to the guide tower, wherein a carrying part (43) that can be connected to the evaporation vessel (5) is pivotably retained about a horizontal pivot axis on the holding part, and a spindle drive (44), which includes an adjustment spindle (45) with a self-locking spindle thread (46), is provided to adjust and secure the selected pivot position.
B01D 1/22 - Evaporating by bringing a thin layer of the liquid into contact with a heated surface
B01D 3/08 - Distillation or related exchange processes in which liquids are contacted with gaseous media, e.g. stripping in rotating vesselsAtomisation on rotating discs
F16M 11/18 - Heads with mechanism for moving the apparatus relatively to the stand
F16M 11/24 - Undercarriages with or without wheels changeable in height or length of legs, also for transport only
F16M 11/42 - Stands or trestles as supports for apparatus or articles placed thereon with arrangement for propelling the support
F16M 11/10 - Means for attachment of apparatusMeans allowing adjustment of the apparatus relatively to the stand allowing pivoting around a horizontal axis
The invention relates to a rotary evaporator (1), comprising an equipment stand (2) with a protruding guide tower (3) which has a mounting on which an evaporation tank (5) is pivotably retained about a horizontal pivoting axis (42). In one embodiment of the invention, the mounting comprises a holding part connected to the guide tower, wherein a supporting part (43) that can be connected to the evaporation tank (5) is pivotably retained about a horizontal pivoting axis on the holding part, and a spindle drive (44) is provided for adjusting and determining the selected pivoting position, said spindle drive comprising an adjustment spindle (45) with a self-locking spindle thread (46).
B01D 3/08 - Distillation or related exchange processes in which liquids are contacted with gaseous media, e.g. stripping in rotating vesselsAtomisation on rotating discs
The invention relates to a rotary evaporator (1), comprising an equipment stand (2) with a protruding guide tower (3), a glass structure (4) which has an evaporation tank (5) and can be displaced on the guide tower (3) for lifting and lowering in particular the evaporation tank (5) thereof, and at least one fluid line that is connected to the glass structure (4). In one embodiment of the invention, the guide tower (3) comprises a channel (17) that is oriented in the longitudinal extension of the tower (3) and in which a line section is provided of at least one fluid line that is connected to the glass structure (4) and opens out into or ends in a flexible tube connection. Said flexible tube connection is arranged on a bottom-side region of the rotary evaporator, which faces away from the free end of the guide tower (3), and the glass structure (4) is retained on a carriage (21) that can be displaced laterally on the guide tower (3). In another embodiment of the invention, the carriage (21) can be displaced from a lifting position against a return force into a lowering position, and a stationary winch (35) located opposite the guide tower (3) is provided for displacing the carriage (21), said winch comprising at least one rope (37) that can be wound up and is retained or guided on the carriage (21).
B01D 3/08 - Distillation or related exchange processes in which liquids are contacted with gaseous media, e.g. stripping in rotating vesselsAtomisation on rotating discs
The invention relates to a rotary evaporator (1), comprising an equipment stand (2) with a protruding guide tower (3) which has a mounting on which an evaporation tank (5) is retained in a pivotable manner about a horizontal pivoting axis (42). In one embodiment of the invention, the temperature-control tank (10) can be releasably placed on the equipment stand (2), and at least one positioning projection is provided on the equipment stand (2) or the temperature-control tank (10), which interacts with a positioning recess on the temperature-control tank (10) or the equipment stand (2), and an electrical coupling is arranged in the region of the positioning projection and its associated positioning recess for the releasable electrical contacting of the temperature-control device of the temperature-control tank (10) with an electrical connection on the equipment stand (2).
B01D 3/08 - Distillation or related exchange processes in which liquids are contacted with gaseous media, e.g. stripping in rotating vesselsAtomisation on rotating discs
F16M 11/00 - Stands or trestles as supports for apparatus or articles placed thereon
The present invention relates to a rotary evaporator (1), to which a clamping insert (59) having a sleeve-like base shape is associated for clamping a vapor feedthrough, which has the design of a glass hollow shaft (8), in the hub (58) of a rotational drive (57). The clamping insert (2) comprises clamping sections (K1, K2) which are spaced apart in the longitudinal direction and carry each at least one clamping slope (63, 64) which is beveled relative to the longitudinal axis of the clamping insert (59). The beveled clamping slopes interact with the associated counter slopes (65, 66) of the rotational drive (57) such that the clamping sections (K1, K2) are pressed against the glass hollow shaft (8) when axial pressure of the clamping insert (59) is applied. In one embodiment of the invention, the clamping insert (59) comprises supporting webs (60) which are oriented in the longitudinal direction thereof, said supporting webs being connected to each other via connecting webs (61, 62) which are oriented in the circumferential direction of the clamping insert (59). The connecting webs (61, 62) alternately connect to each other the web end regions of adjacent supporting webs (60), which are arranged either on the one or the other side of the clamping insert (59). The supporting webs (60) and the connecting webs (61, 62) are connected to form the sleeve-like base shape of the clamping insert (59) such that the spaced apart clamping sections (K1, K2) are formed by the connecting webs (61, 62) which are provided at the opposite ends of the clamping insert (59) and support the clamping slopes (63, 64). In another embodiment of the invention, the sealing ring (76) is designed as an annular disk, wherein the outer annular zone (78) of the annular disk is provided as a clamping edge, the annular disk has an inner annular zone (79) which is folded or angled in the longitudinal direction of the glass hollow shaft (8), and the sealing ring (76) bears sealingly against the glass hollow shaft (8) with a partial region (T) of the annular disk, said partial region being oriented in the longitudinal direction of the glass hollow shaft (8).
B01D 3/08 - Distillation or related exchange processes in which liquids are contacted with gaseous media, e.g. stripping in rotating vesselsAtomisation on rotating discs
F16L 27/08 - Adjustable jointsJoints allowing movement allowing adjustment or movement only about the axis of one pipe
A diaphragm pump (1) which has in at least one pump head (2) a working or pump diaphragm (3) which, by means of a clamping zone (4) arranged at its outer circumference, is clamped between two housing parts (5, 6) of a pump housing and which, between itself and a pump head part (6), borders a working or delivery chamber (8) and which, in a central zone (10), surrounds a diaphragm armature (11) which, on a side facing away from the working or delivery chamber (8) of the at least one pump head (2), is connected to a reciprocating drive (12) which is provided for generating an oscillating stroke movement of the working or pump diaphragm (3). The diaphragm pump according to the invention is characterized in that the annular zone arranged adjacent to the clamping zone (4) is formed as a guide zone (14) which, in the unloaded state of the working or pump diaphragm, is convexly curved and projects into the working or delivery chamber (8), with which guide zone (14) the working or pump diaphragm (3) rolls on a complementarily shaped annular or support zone (15) of the pump head (2) during the stroke movement of the working or pump diaphragm (3), and that a compensation zone (16) of the working or pump diaphragm (3) is provided between the guide zone (14) and the central zone (10), which compensation zone, in the unloaded state, is in contrast curved concavely and in the direction of the stroke drive (12). The diaphragm pump according to the invention is characterized by improved pump performance, a long service life and quiet and low-vibration pump operation.
A multi-stage diaphragm suction pump, includes at least two pump chambers, each having a inlet having at least one inlet valve, and a outlet having at least one outlet valve, and a suction line, which connects the fluid inlets of the pump chambers. Successive pump chambers are connected to one another by at least one connection line such that, when a differential pressure in the suction line is reached/exceeded, the diaphragm pump changes from parallel to an operating mode that is at least also serial. At least one check valve, which opens to a downstream pump stage, is interposed in each of the inflow and outflow regions of the at least one connection line. A suction-side opening or a pressure-side opening of the connection line is arranged in a region of the pump chamber on which a diaphragm associated with the pump chamber rolls first during a pump cycle.
F04B 45/04 - Pumps or pumping installations having flexible working members and specially adapted for elastic fluids having plate-like flexible members, e.g. diaphragms
The invention relates to a diaphragm pump (1) which has in at least one pump head (2) a working or pump diaphragm (3) which, by means of a clamping zone (4) arranged at its outer circumference, is clamped between two housing parts (5, 6) of a pump housing and which, between itself and a pump head part (6), borders a working or delivery chamber (8) and which, in a central zone (10), surrounds a diaphragm armature (11) which, on its side facing away from the working or delivery chamber (8) of the at least one pump head (2), is connected to a stroke drive (12) which is provided for generating an oscillating stroke movement of the working or pump diaphragm (3). The diaphragm pump according to the invention is characterized in that the annular zone arranged adjacent to the clamping zone (4) is formed as a guide zone (14) which, in the unloaded state of the working or pump diaphragm, is convexly curved and projects into the working or delivery chamber (8), with which guide zone (14) the working or pump diaphragm (3) rolls on a complementarily shaped annular or support zone (15) of the pump head (2) during the stroke movement of the working or pump diaphragm (3), and that a compensating zone (16) of the working or pump diaphragm (3) is provided between the guide zone (14) and the central zone (10), which compensating zone, in the unloaded state, is in contrast curved concavely and in the direction of the stroke drive (12). The diaphragm pump according to the invention is characterized by improved pump performance, a long service life and quiet and low-vibration pump operation.
The invention relates to a multi-stage diaphragm suction pump, comprising at least two pump chambers, each having a fluid inlet having at least one inlet valve, and a fluid outlet having at least one outlet valve, and a suction line, which connects the fluid inlets of the pump chambers. Consecutive pump chambers are connected to each other by means of at least one connection line such that, when a differential pressure in the suction line is reached/exceeded, the diaphragm pump changes from parallel operation of the pump chambers thereof to an operating mode of said pump chambers that is at least also serial. At least one check valve, which opens to the downstream pump stage, is interposed in each of the inflow and outflow regions of the at least one connection line. In order to optimize the pump characteristic of such a diaphragm suction pump, according to the invention at least in one pump chamber, either in order to improve the intake pressure the suction-side opening of the at least one connection line, or in order to improve the suction capacity the pressure-side opening of the at least one connection line, is disposed in the region of the pump chamber, or in the vicinity of the region of the pump chamber, on which the diaphragm associated with said pump chamber rolls off first during a pump cycle. In addition, or instead, according to a further embodiment at least one connection line, in particular between successive pump chambers, has a descending line progression and, for this purpose, compared to the outflow-side line segment, the inflow-side line segment of said at least one connection line is arranged at a higher level.
F04B 45/04 - Pumps or pumping installations having flexible working members and specially adapted for elastic fluids having plate-like flexible members, e.g. diaphragms
A multi-stage membrane suction pump having at least two pump chambers, each having a fluid inlet and a fluid outlet, and having a suction line connecting the fluid inlets. Successive pump chambers are connected via at least one connecting line such that the membrane pump upon reaching/exceeding a differential pressure in the suction line changes from a parallel operation into at least also a serial operation. In the inflow and outflow regions of the at least one connecting line, at least one check valve each is interposed, opening toward the subsequent pump stage. The check valves provided in the connecting line(s) are designed smaller compared to inlet and outlet valves of the pump chambers, and line sections of the connecting lines that open toward the neighboring pump chamber have a smaller clear line cross-section compared to the inlet and outlet valves, and are associated with the check valves.
A vacuum pump stand (1) for generating and regulating the vacuum intended for a rotary vaporizer, including a control device having a control connection to a control unit (4) having at least one control element (3, 6). In the pump stand (1), the control unit (4) is designed as a remote control unit having a wireless control connection to the control device of the pump stand. Laboratory personnel can thus observe the rotary evaporator and the associated pump stand (1) through the divider of a fume cupboard, in order to be able to modify and readjust the process parameters at the remote control panel as needed. Because the remote control unit (4) has a wireless control connection to the control device of the pump stand (1), the fume cupboard no longer needs to be opened, even momentarily. Rather, the pump stand (1) can be operated from a sufficient distance outside the fume cupboard without the laboratory personnel needing to be exposed to special hazards.
A brushless direct current motor including a rotor having permanent magnets, which rotates in a commutation created alternating magnetic field of a stator (1) is provided, which magnetic field is created by a coil system of wire coils (3) applied on an insulating body (4) in the circumferential direction and spaced apart from each other. Control electronics are provided for controlling the electric wire coils, spaced apart from each other, of the control system provided in the stator (1), with non-contact rotary position sensors (5) being allocated to the phases of the coil system (2). In the direct current motor according to the invention the rotary position sensors (5) are arranged on a sensor carrier (13). The sensor carrier (13) can be fastened at least at one face of the stator (1), and positioning aids cooperating with each other are arranged between the sensor carrier (13) and the adjacent stator face, which determine a relative position of the stator (1) in reference to the sensor carrier (13) and the rotary position sensors (5) arranged thereupon. If applicable, the direct current motor can be produced in an automated production method with little expense.
The invention relates to a multi-level membrane suction pump having at least two pump chambers, comprising each a fluid inlet with at least one inlet valve and a fluid outlet with at least one outlet valve, and having a suction line connecting the fluid inlets of the pump chambers, wherein successive pump chambers are connected to each other via at least one connecting line such that the membrane pump upon reaching/exceeding a differential pressure in the suction line changes from a parallel operation of the pump chambers thereof into an at least also serial operation of said pump chambers. In the inflow and outflow regions of the at least one connecting line, at least one check valve each is interposed, opening toward the subsequent pump stage. The membrane suction pump according to the invention is characterized in that the check valves provided in the inflow and in the outflow regions of the connecting line(s) are designed smaller compared to the inlet and outlet valves of the pump chambers and that a line section of the connecting line that is open toward the neighboring pump chamber, said line section having a smaller clear line cross-section compared to the inlet and outlet valves, is associated with said check valves each.
F04B 45/04 - Pumps or pumping installations having flexible working members and specially adapted for elastic fluids having plate-like flexible members, e.g. diaphragms
F04B 37/14 - Pumps specially adapted for elastic fluids and having pertinent characteristics not provided for in, or of interest apart from, groups for special use to obtain high vacuum
F04B 25/00 - Multi-stage pumps specially adapted for elastic fluids
F04B 49/00 - Control of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for in, or of interest apart from, groups
The invention relates to a vacuum pump stand (1) for generating and regulating the vacuum intended for a rotary vaporizer, comprising a control device having a control connection to a control unit (4) having at least one control element (3, 6). The pump stand (1) according to the invention is characterized in that the control unit (4) is designed as a remote control unit having a wireless control connection to the control device of the pump stand. Laboratory personnel can thus observe the rotary evaporator and the associated pump stand (1) according to the invention through the divider of an extractor, in order to be able to modify and readjust the process parameters at the remote control panel as needed. Because the remote control unit (4) has a wireless control connection to the control device of the pump stand (1), the extractor no longer needs to be opened, even momentarily. Rather, the pump stand (1) can be operated from a sufficient distance outside the extractor without the laboratory personnel needing to be exposed to special hazards (see FIG.).
A diaphragm pump (1) has two diaphragm heads (15), in each case two diaphragms (6) and two separate pump housings (3) in which the connecting rods (5) for the diaphragms (6) are arranged, which connecting rods (5) can be driven by a common shaft (4), wherein the drive for the shaft (4) can be arranged between the two pump housings (3). Here, the two pump housings (3) are connected to one another in an air-permeable fashion in particular by means of a connecting line (7), such that the air displaced in each case by the one diaphragm (6) can be moved into the other pump housing (3) in which the associated diaphragm (6) leads to a space enlargement as a result of being driven in the opposite direction.
F04B 43/02 - Machines, pumps, or pumping installations having flexible working members having plate-like flexible members, e.g. diaphragms
F04B 45/04 - Pumps or pumping installations having flexible working members and specially adapted for elastic fluids having plate-like flexible members, e.g. diaphragms
06 - Common metals and ores; objects made of metal
07 - Machines and machine tools
11 - Environmental control apparatus
20 - Furniture and decorative products
Goods & Services
Manually operated valves made of metallic materials (except
machine components). High performance diaphragm compressors (machines), vacuum
pumps (machines), gas pumps (machines), liquid pumps
(machines), valves as machine components. Gas dryers. Valves made of non-metallic materials (except machine
components).
06 - Common metals and ores; objects made of metal
07 - Machines and machine tools
11 - Environmental control apparatus
20 - Furniture and decorative products
Goods & Services
[Manually operated valves made of metallic materials, not including machine components] Performance diaphragm compressors for machines, vacuum pumps for machines, machines, namely, gas pumps, liquid pumps, valves as machine components [Gas dryers] [Valves made of non-metallic materials being other than machine parts]
09 - Scientific and electric apparatus and instruments
Goods & Services
Pumps, namely, gas and liquid pumps; compressors, namely, high capacity diaphragm compressors; diaphragm dosing pumps; diaphragm liquid pumps, vacuum pumps, vacuum apparatus, namely, laboratory pumps for gas and liquids, and vacuum installations comprised of vacuum pumps and vacuum apparatus, namely, multi-user laboratory vacuum pump systems; vacuum installations comprised of receptacles, high efficiency condensators, vacuum pumps, vacuum extraction devices, namely, laboratory vacuum pump systems, connecting lines and related mechanical and electronic vacuum regulators Pressure regulators for vacuum control; measuring apparatus, namely, vacuum regulation controllers, control devices, namely, electronic vacuum controllers; regulating apparatus, namely, electronic vacuum controllers and monitoring instruments, namely, electronic vacuum controllers for pumps and pump installations; software for measuring, controlling, regulating and monitoring respectively for activating and operating pumps and pump installation; all the aforesaid goods for laboratory requirements
09 - Scientific and electric apparatus and instruments
Goods & Services
Pumps, namely, gas and liquid pumps; compressors, namely, high capacity diaphragm compressors; diaphragm dosing pumps; diaphragm liquid pumps; vacuum installations comprised of receptacles, high efficiency condensators, vacuum pumps Pressure regulators for vacuum control; measuring apparatus, namely, vacuum regulation controllers, control devices, namely, electronic vacuum controllers; regulating apparatus, namely, electronic vacuum controllers and monitoring instruments, namely, electronic vacuum controllers for pumps and pump installations; software for measuring, controlling, regulating and monitoring respectively for activating and operating pumps and pump installation; vacuum apparatus, namely, laboratory pumps for gas and liquids, and vacuum installations comprised of vacuum pumps and vacuum apparatus, namely, multi-user laboratory vacuum pump systems; vacuum extraction devices, namely, laboratory vacuum pump systems, connecting lines and related mechanical and electronic vacuum regulators; all the aforesaid goods for laboratory requirements
09 - Scientific and electric apparatus and instruments
Goods & Services
Pumps, in particular for gases and fluids; compressors, in particular high-performance diaphragm compressors; diaphragm dosing pumps; diaphragm pumps for fluids; vacuum pumps and vacuum apparatus, and vacuum installations contructed therefrom; vacuum equipment, consisting of tanks, high-performance condensers, vacuum pumps, vacuum points of use, connector pipes as well as the mechanical and/or electronic vacuum regulators appertaining thereto. Pressure regulators; measuring, control, regulating and checking (supervision) apparatus for pumps and pumping installations; software for measuring, controlling, regulating and monitoring purposes, or for activating, running and operating pumps and pumping installations; all the aforesaid goods in particular in the field of laboratory supplies.
09 - Scientific and electric apparatus and instruments
Goods & Services
Pumps (machinery) especially high-performance diaphragm
compressors, vacuum pumps, liquid pumps; vacuum power houses
consisting of vacuum pumps, of vacuum inlets, of connection
lines. Vacuum power houses consisting of mechanical and/or
electronic vacuum regulators which are part of connection
lines.
