DE102005018758A1 - Apparatus for controlling the continuous separation of water and oil in a centrifuge comprises a control unit that analyzes data from pressure drop sensors, a liquid level sensor and an oil sensor - Google Patents

Abstract

Apparatus for controlling the continuous separation of water and oil in a centrifuge (1) comprises a control unit that analyzes data from a sensor (16) for measuring the pressure drop across a prefilter (17), a sensor (18) for measuring the pressure drop across a water filter (19), a sensor (21) for measuring the liquid level in the centrifuge and a sensor (22) for detecting oil in the upper part of the centrifuge. The control unit controls a feed pump (3), a feed flow controller (8), the centrifuge drive unit (9), a water discharge valve (12) and an oil discharge valve (14).

Description

The The invention relates to a device for controlling a continuous Separating of separable media of different density, preferably of water and oil in a centrifugal separator, especially in a mobile Separator used in catastrophes and accidents to protect the environment can be used.

An apparatus for the continuous separation of separable media of different density is from the document DE 195 28 021 C1 known, having a rotor can be filled with a mixture. The rotor is surrounded by ring channels, in which the separated liquids collect to be discharged into separate containers. In this case, the outflow of the separated liquids and the flow of the mixture is controlled by valves which rotate in the rotor or on the rotor, especially since valves in the narrow passages or downstream of the annular passages balance the rotor between the incoming mixture of demixable liquids and the effluent segregated components can neither steer nor sustain continuously.

The reliable Control of a continuous separation process with actuators outside the Rotor therefore represents a previously not reliably solved problem, although the benefits are obvious, since then on the actuation of Actuators and on the feeder of control signals in the rotating system and the associated risks overcome become.

task The invention is an apparatus for controlling a continuous Indicate segregation of demixable media of different density, those without rotating sensors, without rotating actuators like rotating ones Valves and without associated rotating lines a controlled, continuous and reliable separation ensured by demixable media in a centrifugal separator.

These The object is ensured by the subject matter of the independent claims. Advantageous developments emerge from the dependent claims.

According to the invention the device for controlling a continuous separation of de-mixable media of different densities, preferably from Water and oil, in a centrifugal separator, the following components to be controlled on. A pump drive a low-turbulence centrifugal pump as a media mixture pump for Refill and refill of a mixed media a media inlet duct into a rotor of a centrifugal separator by means of a first frequency converter. A stationary flowmeter for controlling a continuous inlet amount of the media mixture in a centrifugal separator. A centrifuge drive for accelerating and maintaining a predetermined peripheral speed under training and maintaining a stable paraboloid of revolution between the media in the centrifugal separator via a second frequency converter.

One non-rotating, stationary Drain valve for a drain of the denser medium outside a forming stable paraboloid of revolution. A non-rotating stationary drain valve for a drain of the less dense medium within a forming stable Rotation parabo loids. The device for controlling has a programmable logic controller Control on which evaluates sensor data from different Sensors of the device for controlling a continuous separation supplied by demixable media of different densities. The control device has for this purpose a first differential pressure gauge for detecting the on state of a prefilter in the media inlet line on. Furthermore, the device for controlling a second differential pressure gauge for detecting the on state of a filter in the media drain line of the denser medium. Finally, the device points for controlling a non-rotating stationary level sensor used for detection the complete filling of the rotor of the centrifugal separator. In addition, the device has a first sensor device with a non-rotating central stationary sensor for the less dense medium within the rotor to capture a stable Rotation paraboloid in the rotor volume.

One Advantage of this device is that it is used to control a continuous Separation process of demixable media neither mitrotierende sensors still co-rotating valves or actuators and no co-rotating Supply lines to the actuators or to the sensors needed. Yet she can completely over the two frequency converters for once the drive of the centrifugal pump to supply a mixed media, and on the other hand for the Acceleration of the rotor to a peripheral speed of segregating media and for one Keeping this peripheral speed during a continuous Separating controls. The non-rotating stationary discharge valve controls the drain of the denser medium, while the non-rotating stationary Drain valve controls the draining of the less dense medium.

The required control signals are doing in an advantageous manner provided by a programmable logic controller, which in particular the sensor data of the non-rotating first Sensor device with the non-rotating central stationary sensor within the rotor of the centrifugal separator evaluates, wherein the control is calibrated to a forming stable To monitor rotational paraboloid within the rotor and in limits Controlling the non-rotating drain valve and non-rotating Keep drain valve. In a further preferred embodiment the device has this for the less dense medium a second sensor device in the bottom area of the rotor for monitoring and switching off the drainage of the denser medium. A controller with two sensor devices and thus also two stationary sensors, the offset and centrally located in the rotor is the advantage connected that the controller does not work in the rotating system must intervene as long as the first sensor detects the lighter medium and the second sensor does not yet detect the light medium.

These two mutually arranged sensors with their sensor devices provide the controller with the data around the paraboloid of revolution keep the two sensors continuous and stable. In a another preferred embodiment the device has a temperature sensor for monitoring the temperature of the supplied Mixed media, wherein with decreasing temperature of the media Speed of the media mixture pump over reduces the first frequency and the speed of the rotor of the centrifugal separator the second frequency converter is increased, that is, the control system reacts with higher Zentrifugalge speed to decreasing temperatures of the separated Media mixture. In a further preferred embodiment The invention relates to the device for controlling the separation of a Media mixture of separable media on an oil level sensor to be supplied in the Media mixture is arranged and an oil level monitoring of the pumped down Medium allows. This stationary Sensor can be arranged directly on the low-turbulence centrifugal pump, wherein its sensor head above the intake of the centrifugal pump is arranged to signal in time when pumping out of dirty water is an oil layer approaching the neck of the pump. As long as this additional oil level gauge does not detect oil, can the feed pump with highest output first drain wastewater and do not have to worry about the limited flow rate of the centrifugal separator can be reduced with its capacity. On the Frequency converter can thus as long as the oil level gauge does not signal oil the frequency converter can run the centrifugal pump at maximum speed. Only with the appearance of an oil layer at the sensor will be before this oil layer the level of the intake manifold is reached via the frequency converter adjusted in the centrifugal separator processable and separable flow rate.

Furthermore For example, the device may include a safety pressure sensor for detection having the media pressure in the centrifugal separator. One such pressure sensor can also be arranged stationary and outside the rotor and monitor the increase in media pressure and, as soon as one allowed Border is reached, the influx of more media mixture over stop the corresponding safety shut-off valve.

A Another preferred embodiment of Invention provides additional Control and switching components in the mixed media line before, so a device results in which in the media mixture line between the mixed media pump and the mixture inlet of the centrifugal separator following components are arranged, which the flow of the media mixture control and influence. Such a component is a check valve, the downstream the pressure port of the mixed media pump to shut off the return flow ensures the media mixture with switched off media mixture pump. About that In addition, the mixed media conduit in this embodiment has the invention, a 3-way ball valve downstream of the check valve for discharging excess water and for switching to the medium inlet line of the centrifugal Separators upon detection of an oil layer in the pumped down Medium up.

Of Furthermore, the mixed media line comprises a pre-filter for filtering of particles in the mixed media, with one connected in parallel Differential pressure monitoring is provided to timely rid the filter of particles or replace the filter. Instead of such a filter can also a hydrocyclone can be used to turbid solid particles the liquid mixture deducted. Furthermore, the media mixture line has a flow meter on to the mixed media pump over to regulate the first inverter and a preset flow for the to ensure centrifugal separator. As mentioned above, can also be used in the stationary mixed media line the safety pressure gauge and a safety inlet valve for Shutting off the inlet line when the permissible medium pressure is exceeded be provided in the centrifugal separator.

In a further preferred embodiment, the device for controlling on and in the centrifugal separator downstream components that monitor and control the continuous separation process of the media mixture. First, a toothed belt drive is provided to drive the rotor to impart a peripheral speed to the rotor, the drive motor of the toothed belt drive being speed controlled by a frequency converter. In addition, this embodiment of the invention, a level sensor of the rotor to ensure the degree of filling of the rotor, which in turn is not disposed in the rotor, but the monitoring the discharge of the less dense medium and as soon as the less dense medium in the head region of the rotor and thus in the discharge line There is a control signal which temporarily closes the drain line until a stable paraboloid of revolution is formed in the centrifugal separator.

Furthermore it is envisaged that a first control device for the less dense medium within the rotor for detection of a stable paraboloid of revolution is provided in the rotor volume, wherein the sensor of this sensor device is not rotates, but is part of the stator around which the rotor rotates. Also, a second sensor device is for the less dense medium provided in the bottom area of the rotor, which ensures that on time a shutdown of the expiration of the denser medium takes place, if measured in the bottom area of the sensor in the soil the less dense medium becomes. To stop a leak of denser medium is in the Drain pipe for the denser medium provides a drain valve that is only open as long as a less dense medium is measured in the floor area. A drain valve monitors the draining of the less dense medium from the head area of the Rotor in a downstream connected collecting tank under Maintaining the paraboloid of revolution in the centrifugal separator. Consequently, should a less at the sensor of the first device Dense medium, the drain valve is temporary closed to a sufficient in the centrifugal separator Amount of less dense medium such as oil to collect, so that the Rotation paraboloid propagates towards the first sensor.

In the outlet pipe for the denser medium is next to a stationary outlet valve another additional Filter provided to oily Remove residues from the heavier medium. Here is the Filter function in turn monitored by means of a parallel differential pressure sensor. The first and the second sensor device have in addition to the actual Sensor containing a sensor head with two insulated contact electrodes at a central stationary Measuring rod, each followed by a measured value detection. These measurements of the sensor devices for the less dense medium each have a voltage divider. In the voltage divider is an AC / DC converter and an A / D converter with signal conditioning downstream before these measured values of the sensors are digitized and the central programmable controller are supplied.

To For sensing, the sensor devices are connected to an AC power supply connected and each form a voltage divider with a series resistor, from which a measuring voltage of the contact electrodes of a sensor head is tapped and rectified by the downstream AC / DC converter and digitized in the subsequent A / D converter. Consequently, can with the two sensor devices forming as well as monitoring of the paraboloid of revolution as the interface between the two separating media with the control circuit described above continuously be realized without rotating sensors or rotating Valves or even rotating supply lines in the centrifugal separator be required.

Farther it is intended that for the level sensor, as mentioned above in the drain pipe for the lighter medium is arranged, provided an optical measuring sensor becomes. The above-described resistance measuring sensors, rotating in the liquid stationary and dive centrally, are for this monitoring unsuitable because the less dense medium of oily components such high electrical resistance that provides the distinction between Medium and air not reliable and can be taken unequivocally.

The The invention will now be described with reference to the accompanying figures.

1 shows a schematic block diagram with media lines, measuring lines and control lines between components of an apparatus for controlling a continuous separation of denaturable media of different density according to an embodiment of the invention;

2 FIG. 12 is a schematic block diagram showing electrical connections between components of an apparatus for controlling continuous separation of differentiated denumerable media according to the embodiment. FIG 1 ,

1 shows a schematic block diagram with media lines 5 . 20 and 45 , Measurement lines and control lines between components of a device for controlling a continuous separation of demixable media different Density according to an embodiment of the invention. The central component to be controlled is a centrifugal separator 1 with a rotating rotor 6 and a stationary stator 50 , The rotor 6 is opposite the stator 50 with a depository 48 in the head area and a storage location 49 in the bottom area of the rotor 6 rotatable relative to the stator 50 stored. The stator 50 has a central stationary dipstick 51 up, with his sensor heads 52 and 53 on different lengths of the measuring rod 51 protrudes into the rotor.

Around the central stationary dipstick 51 , which is marked with a dashed line, is coaxially a riser with a drain 33 for the less dense medium 15 , such as an oily liquid, coaxial and stationary as part of the stator 50 fixed. Coaxial with the riser with drain 33 for the less dense medium 15 from the forming paraboloid of revolution 10 , whose contour is indicated by a dotted line, is a media inlet line 5 as part of the stator 50 arranged, wherein the media mixture 4 via the media inlet line 5 and a stationary flapper 54 in the head area 34 of the rotor 6 is distributed. One in the ground area 31 of the rotor 6 arranged outlet 32 is designed as a rotary feedthrough and passes the denser medium 13 in the form of an aqueous liquid via the media drain line 20 from the ground area 31 of the rotor 6 , The rotor 6 is via a centrifuge drive 9 that as a toothed belt drive 29 is formed, and gate of a Antriebsmo 46 for the rotor 6 on one through a frequency converter 11 controlled speed is maintained.

The central component is the centrifugal separator 1 a centrifugal drive to be controlled 9 for the rotor 6 and three media lines 5 . 20 and 45 whose conduction components are to be controlled such that a continuous separation process while maintaining a paraboloid of revolution 10 in the rotor 6 is guaranteed. The media inlet pipe 5 , over the first coaxial and then through the baffle plate 54 radially deflected the media mixture inlet is controlled, this is in the in 1 shown apparatus for controlling a continuous separation of demixable media 13 and 15 different density on several components that the inlet of the media mixture 4 control and regulate.

The main component in the media inlet line 5 for controlling the flow of the media mixture 4 is a mixed media pump 3 , which in this embodiment comprises a low-swirl centrifugal pump, preferably a Kanalradpumpe, the type "Chiemsee" the company Spechtenhauser GmbH, as described in the issued patent DE 195 17 425 C2 is known or a scaled down version of this Kanalradpumpe 3 in the form of the type "Mini-Chiemsee" the company Spechtenhauser GmbH corresponds. These pumps have the advantage that due to the Kanalradkonstruktion a substantially laminar flow of the media mixture 4 is maintained by the intake manifold to the discharge nozzle. This is the media mixture 4 that's from one area 55 the intake manifold of the Kanalradpumpe is not additionally emulsified, which is the separation process in the centrifugal separator 1 would prolong disadvantageously.

The delivery rate of the mixed media pump 3 in the media inlet line 5 is through the pump drive 2 via a frequency converter 7 controlled. An oil level sensor 24 can be optional in the field 55 of the media mixture 4 be transversely arranged to signal a boundary layer between an aqueous liquid and an oily liquid. If an aqueous liquid is passing through the oil level sensor 24 signaled, so can a 3-way ball valve 27 in the media inlet line 5 on a bypass line 56 and via the frequency converter 7 the mixed media pump 3 be controlled at the highest flow rate to pump denser medium, (water) with the highest flow and through the bypass line 56 into a body of water or sewage system 57 derive. Only when the oil level sensor 24 in the area 55 of the media mixture 4 an oily liquid or oil layer signals, is via the 3-way ball valve 27 on the media inlet pipe 5 of the centrifugal separator 1 switched. Downstream of the pressure port of the mixed media pump 3 is a check valve for safety reasons 26 arranged when turning off the mixed media pump 3 prevents mixed media 4 from the media inlet line 5 can flow back. Furthermore, downstream of the mixed media pump 3 in the media inlet line 5 a pre-filter 17 arranged to remove solid particles from the media mixture 4 filter out. Using a first differential pressure sensor 16 is the functionality of the pre-filter 17 supervised.

If the differential pressure increases extremely, then the separation process is interrupted and the pre-filter 17 cleaned. To a flow of the media inlet line 5 to adjust is a flow meter 8th in the media inlet line 5 arranged over the frequency converter 7 the pump drive 2 and thus the flow of the media mixture 4 through the media inlet line 5 controls. The dashed lines in the diagram indicate corresponding active connections, which can be embodied as signal lines. Finally, in the media inlet line 5 a safety inlet valve 28 arranged as a shut-off valve, with a safety pressure sensor 23 is in active connection. Indirectly via the safety pressure sensor 23 the media pressure in the centrifugal separator 1 measured, so when exceeding a permissible pressure for the rotor 6 the safety inlet valve 28 responds and locks the media mixture inlet.

In summary, it should be noted that through the components in the media inlet pipe 5 a continuous mixture inlet 25 through interaction of the flow meter 8th with the frequency converter 7 as long as it is guaranteed as a mixed media 4 containing oily liquids through the oil level sensor 24 is signaled.

Next, the control components of the apparatus for controlling continuous separation of media in the embodiment of FIG 1 which controls draining of the separate media. This fulfills the drainage line 45 and its control components have three functions. A first function is to fill the rotor 6 to signal if the rotor 6 completely filled. Since rotating sensors are completely dispensed with with this invention, there is also a level sensor 21 in the stationary discharge line 45 arranged. This level sensor 21 This is equipped with an optical sensor that can distinguish between air filling and liquid filling. Downstream of the level sensor 21 is a 2/2-way valve 27 arranged using the sensors 22 and 30 of the measuring rod 51 is controlled. As long as the rotation paraboloid 10 in the rotor 6 the upper sensor heads 52 and 52 not yet wetted with an oily liquid, the drain valve remains 14 closed.

Only when the paraboloid of revolution 10 the upper sensor head 52 has passed with its contact electrode pair, the drain valve 14 open, so oily liquid or the less dense medium 15 from inside the paraboloid of revolution 10 via the drainage line 45 to a collection container 35 can be drained for oily liquids. The drain valve 14 stays open even when both sensor heads 52 and 53 wetting of their contact electrodes with an oily liquid.

A second drain for the denser medium 13 via a rotary union with an outlet 32 is with a media drain 20 connected. Also this drain line 20 is stationary and is used by a 2/2-way valve as a drain valve 12 the media drainage line 20 controlled. As long as the two sensor heads 52 and 53 signal an aqueous solution and therefore are not wetted by an oily liquid, the drain valve remains 12 open. Even if the upper sensor head 52 in the rotor 6 already signaled an oily liquid, is the state of continuous separation of the through the rotor 6 , in which a mixture of media is continuously supplied, achieved as the separate media through the open drain valves 14 and 12 be derived simultaneously continuously. Only when the lower sensor head 53 With its two contact electrodes signaled an oily liquid, the drain valve 12 closed.

In contrast to the known prior art from the document DE 195 28 021 , in which only ever a rotating drain valve 12 is opened for one of the two media, while the other remains closed, and thus no continuous continuous separation process can be maintained, is with the presented embodiment of the invention according to 1 a control device is presented in which a completely continuous separation of demixable liquids is possible. Downstream of the drain valve 12 for the denser medium 13 is still a postfilter 19 arranged, which filters out oily residues from the denser medium or the water. Also this filter 19 is by a parallel-connected differential pressure sensor 18 supervised. Downstream of this last filter is a sump 36 arranged for the water or the water can be discharged into a body of water or a sewage system.

At the bottom of the 1 becomes a temperature sensor 47 shown the temperature of the media mixture 4 measures and via the frequency judge 7 the pump drive 2 the capacity of the pump and the frequency converter 11 and the drive motor 46 for the rotor 6 the rotational speed of the rotor 6 depending on the measured temperature adapts. The lower the temperature measurement from the temperature sensor 47 for the media mixture 4 is, the more is the flow rate through the frequency converter 7 the mixed media pump 3 Shut down and the speed of the rotor 6 over the frequency converter 11 , the drive motor 46 and the toothed belt drive 29 brought up to cool even for mixed media 4 a continuous separation of the demixable media mixtures 4 to ensure.

2 shows a schematic block diagram with electrical connections between components of a device for controlling a continuous separation of demixable media. The central device in this block diagram is a programmable logic controller 60 powered by a 12 volt DC power source 59 is supplied. To this programmable logic controller 60 are via appropriate signal or connecting cables the above-mentioned frequency converter 7 and 11 connected as well as the drain valve 12 and the drain valve 14 , The driving of the frequency inverter 7 and 11 depends on the level sensor 21 from a 5 volt DC source 61 via a series resistor 58 of 120 ohms and the programmable logic controller 60 signaled as soon as the rotor 6 with mixture 4 is filled. As long as the drain valve remains 12 closed and the drain valve 14 open.

Will be a mixture 4 signaled, is in the start-up phase, the drain valve 14 closed. Despite centrifugal acceleration, no paraboloid of revolution forms 10 off, so there is no oil in the rotor and the drain valve 12 will be opened. The formation of a paraboloid of revolution becomes the programmable logic controller 60 through the measured value detection circuits 41 and 42 signals, wherein the measured value detection circuit 41 the measured values of the upper measuring sensor head 52 of the stationary measuring rod 51 in the rotor 6 evaluates. The measured value detection circuit 42 on the other hand, it evaluates the measured values of the lower sensor head 53 of the measuring rod 51 in the rotor 6 and digitizes the programmable logic controller 60 to disposal.

Both measured value detection circuits 41 and 42 be via an AC power supply 37 supplied with 16-volt AC voltage in a frequency range of 50 to 60 Hz. The contact electrodes of the sensors 22 are added via a series resistor 44 of 1.5 kOhm to the AC power supply 37 connected and form with the series resistor 44 a voltage divider 40 , The AC voltage tapped between the contact electrodes becomes an AC / DC converter 38 fed and the rectified voltage is in a signal conditioning 43 smoothed and an A / D converter 39 supplied and then as a digitized signal of the programmable logic controller 60 made available.

As long as that in 1 shown paraboloid of revolution 10 between the two sensor heads 52 and 53 the sensor devices 22 and 30 is arranged, a continuous operation by continuously supplying a mixed media 4 and continuous discharge via the opened drain valve 12 and the opened drain valve 14 realized with this control. Only when both sensor heads 52 and 53 the less dense medium 15 For safety reasons, the drain valve will signal 12 closed while the drain valve 14 remains open. Conversely, if both sensor heads do not signal a less dense medium, the drain valve 14 closed and the drain valve 12 for the denser medium 13 open.

1

centrifugal separator

2

pump drive

3

Media mixture pump

4

medium mixture

5

Media inlet line

6

rotor

7

first frequency converter

8th

Flowmeter

9

centrifuge drive

10

paraboloid

11

second frequency converter

12

drain valve

13

denser Medium (water)

14

drain valve (Oil)

15

fewer dense medium

16

first Differential Pressure Sensor

17

prefilter

18

second Differential Pressure Sensor

19

filter

20

Media drain line of the denser medium

21

level sensor

22

first Sensor device for less dense medium in the

rotor

23

Safety pressure sensor

24

Oil level measurement sensor

25

mixture intake

26

check valve

27

3-way ball valve

28

Security inlet valve

29

toothed belt drive

30

second Sensor device in the floor area

31

floor area

32

outlet

33

drainage

34

head area

35

Collecting container for oil

36

Collecting container for water

37

AC power supply

38

AC / DC converter

39

A / D converter

40

voltage divider

41

Data acquisition circuit

42

Data acquisition circuit

43

signal conditioning

44

dropping resistor

45

drain line

46

drive motor

47

temperature sensor

48

depository in the head area

49

depository in the ground area

50

stator

51

centrally stationary dipstick

52

sensor head

53

sensor head

54

flapper

55

Area of the media mixture

56

bypass line

57

sewage system

58

dropping resistor

59

DC voltage source

60

programmable Logic control

61

DC voltage source

Claims (10)

Device for controlling a continuous separation of demixable media of different density, preferably water and oil, in a centrifugal separator ( 1 ), the device controlling the following components: - a pump drive ( 2 ) of a low-turbulence centrifugal pump as a mixed media pump ( 3 ) for filling and topping up a mixed media ( 4 ) via a media inlet line ( 5 ) in a rotor ( 6 ) of a centrifugal separator ( 1 ) by means of a first frequency converter ( 7 ), - flow meter ( 8th ) for controlling a continuous intake amount of the media mixture ( 4 ) in a centrifugal separator ( 1 ), - a centrifuge drive ( 9 ) for accelerating and maintaining a given peripheral speed to form and maintain a stable paraboloid of revolution ( 10 ) between the media in the centrifugal separator ( 1 ) via a second frequency converter ( 11 ), - a drain valve ( 12 ) for a drain of the denser medium ( 13 ), outside of a forming stable paraboloid of revolution ( 10 ), - a drain valve ( 14 ) for draining the less dense medium ( 15 ), within a forming stable paraboloid of revolution, and wherein a memory-programmable controller ( 16 ) Evaluates sensor data supplied by: a first differential pressure sensor ( 16 ) for detecting the on-state of a prefilter ( 17 ) in the media inlet line ( 5 ), - a second differential pressure sensor ( 18 ) for detecting the on-state of a filter ( 19 ) in the media drain line ( 20 ) of the denser medium, - a level sensor ( 21 ) of the rotor ( 6 ) of the centrifugal separator ( 1 ), - a first sensor device ( 22 ) for the less dense medium ( 15 ) within the rotor ( 6 ) for detecting a stable paraboloid of revolution ( 10 ) in the rotor volume. Device according to Claim 1, characterized in that the device has a programmable logic controller ( 16 ) containing the data of the sensor devices ( 21 . 22 . 23 ) and the components of the centrifugal separator ( 1 ) controls. Device according to claim 1 or 2, characterized in that the device for the less dense medium ( 15 ) a second sensor device ( 30 ) in the ground area ( 31 ) of the rotor ( 6 ) for monitoring and deactivating the drainage of the denser medium ( 13 ) having. Device according to one of claims 1 to 3, characterized in that the device is a temperature sensor ( 47 ) for monitoring the temperature of the supplied media mixture ( 4 ), wherein with decreasing medium temperature, the speed of the mixed media pump ( 3 ) via the first frequency converter ( 7 ) and the speed of the rotor ( 6 ) of the centrifugal separator ( 1 ) via the second frequency converter ( 11 ) is increased, Device according to one of claims 1 to 4, characterized in that the device is an oil level measuring sensor ( 24 ), which in the supplied media mixture ( 4 ) is arranged and allows oil level monitoring of the medium to be pumped. Device according to one of claims 1 to 5, characterized in that the device is a safety pressure sensor ( 23 ) for detecting the media pressure in the centrifugal separator ( 1 ) having, Device according to one of claims 1 to 6, characterized in that in the media mixture line ( 5 ) between the mixed media pump ( 3 ) and the mixture inlet ( 25 ) of the centrifugal separator ( 1 ) the following components are arranged, which the flow of the medium mixture ( 4 ) control: - a check valve ( 26 ) downstream of the pressure port of the mixed media pump ( 3 ) for shutting off the return flow of the medium mixture when the mixed media pump is switched off ( 3 ), - 3-way ball valve ( 27 ) downstream of the check valve ( 26 ) for draining excess water and switching to the media inlet line ( 5 ) of the centrifugal separator ( 1 ) when detecting oil in the medium to be pumped, - prefilter ( 17 ) for filtering particles with parallel-connected differential pressure monitoring ( 16 ), - flow meter ( 8th ) for controlling the mixed media pump ( 3 ) via the first frequency converter ( 7 ) and - safety pressure gauge ( 23 ) for monitoring the mixture inlet pressure of the medium mixture ( 4 ) in the centrifugal separator ( 1 ), and safety inlet valve ( 28 ) for shutting off the inlet line ( 5 ) when the permissible media pressure is exceeded. Device according to one of claims 1 to 7, characterized in that on and in the centrifugal separator ( 1 ) the following Components are arranged, which are the continuous separation process of the media mixture ( 4 ) and control: - a toothed belt drive ( 29 ), the rotor ( 6 ) gives a rotational speed, wherein the drive motor ( 46 ) of the toothed belt drive ( 29 ) by a frequency judge ( 11 ), - a level sensor ( 21 ) of the rotor ( 6 ) to ensure the degree of filling of the rotor ( 6 ), - a first sensor device ( 22 ) for the less dense medium ( 15 ) within the rotor ( 6 ) for detecting a stable paraboloid of revolution ( 10 ) in the rotor volume, - a second sensor device for the less dense medium ( 15 ) in the ground area ( 31 ) of the rotor ( 6 ) for monitoring and deactivating the process ( 32 ) of the denser medium ( 13 ) from the soil area ( 31 ) of the centrifugal separator ( 1 ), - a drain valve ( 14 ), the indulgence ( 33 ) of the less dense medium ( 15 ) from a header area ( 34 ) of the rotor ( 6 ) in a collecting container arranged downstream ( 35 ) while maintaining the paraboloid of revolution ( 10 ), - an outlet valve ( 12 ), the spout ( 32 ) of the denser medium ( 13 ) from a ground area ( 31 ) of the rotor ( 6 ) in a collecting container arranged downstream ( 36 ) while maintaining the paraboloid of revolution ( 10 ), with an additional filter ( 19 ) Residual components of oily components in the discharge line ( 20 ) and filters its filter function by means of a pressure differential sensor ( 18 ) is monitored. Device according to one of claims 1 to 8, characterized in that the measured value acquisitions ( 41 . 42 ) of the sensor devices ( 22 . 30 ) for the less dense medium in each case a voltage divider ( 40 ), wherein the voltage divider ( 40 ) an AC / DC converter ( 38 ) and an A / D converter ( 39 ) with signal conditioning ( 43 ) before the measured values are digitized in the programmable logic controller ( 16 ), wherein the sensor devices ( 22 . 30 ) to an AC power supply ( 37 ) are connected and each with a series resistor ( 44 ) a voltage divider ( 40 ), from each of which a measuring voltage of the contact electrodes of a sensor head is tapped, in which AC / DC converters ( 38 ) rectified and in the A / D converter ( 32 ) is digitized. Device according to one of claims 1 to 4, characterized in that the level sensor ( 21 ) of the centrifugal separator ( 1 ) in the oil drain line ( 45 ) of the rotor ( 6 ) and is preferably an optical media sensor.