EP0657220B1 - Filter centrifuge - Google Patents

Description

The invention relates to a filter centrifuge according to the Preamble of claim 1.

A generic filter centrifuge can be found in US-A-3 365 066. In this known filter centrifuge a filter drum through an opening in a process housing used and together with a filter drum bearing attached to the process housing. For maintenance work numerous screw connections must be made on the filter drum solved and the filter drum and its storage with the help of hoists.

Another filter centrifuge is from the publication "Knott, systematics in the construction of machines and Apparatus for the chemical industry, construction 1967, Issue 6, pages 217 to 222, image 5 ''. In this known Filter centrifuge is the process room with one end cover provided. Access to the procedural room and thus the centrifuge drum is by the from Lid closed opening of the process room allows. Maintenance work on the centrifuge drum carried out within the process room. At major work on the centrifuge drum in one Workshop must be carried out, the centrifuge drum be expanded, which also includes work in the process room the centrifuge. One to expand the Centrifuge drum required special tool, such as For example, a lifting handle must be on the side of the Opening of the process room are available. are Work on the bearing or the seal of the centrifuge drum the centrifuge must be removed be, as well as the expansion of the warehouse through the process room.

This required work within the process room the machine carries the risk of cross-contamination in itself, for example within the process room working people with those who may not harmless product residues in the process room can guess. In addition, the removed bearing parts attacked by product residues present in the process room become. But the product itself can, for example by lubricants or others when removing the filter drum or contaminants occurring in a warehouse become. This is particularly the case with machines in the Fine chemistry and extremely undesirable in pharmacy.

Is the filter centrifuge a filter centrifuge with clean room separation, such as from EP 0 379 452 is known, all of the above are Work in the process housing Carry out clean room of the plant, which is also a danger contamination of the clean room. Ultimately can such a known filter centrifuge during the maintenance work described does not go into production be involved.

Filter centrifuges are also known in which the Main shaft with the bearings and the seals one Unit, a so-called cartridge, together with one forms self-supporting bearing housing. These storage units can be fully functional regardless of the rest Filter centrifuge can be mounted so that when pending Work on seals or on the cartridge storage completely removed from the filter centrifuge and the necessary work, for example in a workshop, can be carried out. This storage unit depends on Set up the centrifuge either through the process room or can be removed from the rear of the processing room. But even if such a storage unit is provided to expand the storage unit work in the process room of Centrifuge required. Even when working on the centrifuge drum must be done within of the process room take place. This work in Process room bring those already described at the beginning Disadvantages with it.

Filter centrifuges are also known in which the above described storage unit together with the drum forms an overall unit. The expansion of this whole unit from a filter centrifuge, however, also requires work in the process room because the whole unit either must be expanded through the process room or the entire process housing removed from the machine frame must become. Here, too, the ones already described occur Disadvantages of cross-contamination.

The object of the invention is to provide a generic filter centrifuge in which maintenance work on the filter centrifuge, which relate to the filter drum or the storage of the filter drum, can be carried out more efficiently while avoiding the risk of cross-contamination at the same time.

This object is achieved according to the characterizing part of the claim 1 solved.

This configuration can be used both for continuously working as well as discontinuous filter centrifuges be provided. By the specified in claim 1 The task will be solved by separating the process rooms the filter centrifuge even during maintenance work. All work on the filter drum, on the Drum existing fixtures and storage can performed outside the process room of the centrifuge be, because together with their storage on the horizontal moveable bearing frame supported by a filter drum horizontal movement of the bearing frame out of the process housing can be removed. It is advantageous if the bearing frame in the axial direction of the filter drum is translationally movable, in particular the base frame provided with a sliding track and the bearing frame slidable on the sliding track of the base frame can be stored.

It is also advantageous if the sliding track from Rails is formed, on which provided on the bearing frame Unroll support rollers.

Is one that closes the process housing towards the bearing frame Provide the rear wall with an opening, the clear width is larger than the diameter of the filter drum and is on the end section facing the process housing of the bearing frame connected to it Back cover provided, its contour and dimensions the openings in the rear wall are adjusted, so causes Moving the storage frame and the filter drum mounted on it with their storage at the same time opening or a closing of the process housing to remove the Filter drum. It is advantageous between the Outer circumference of the rear wall cover and the inner circumference of the Rear wall opening provided at least one sealing element. Especially can the sealing element in a first circumferential groove of the rear wall cover may be provided. A particularly beneficial one Self-centering occurs when the inner circumference the opening expanded conically towards the bearing frame and if the outer circumference of the rear wall cover to Process housing tapers conically. To secure the Back cover can be between the back wall and the Back cover provided a mechanical lock be. The mechanical lock has an advantageous Design at least one movable in the radial direction Locking element on one of the two too locking parts, rear wall or rear wall cover, stored is and with a locking counter element on the other interacts with the two parts to be locked.

In an advantageous embodiment, the rear wall cover has a further circumferential groove in which as a locking element a circumferential, with at least one radial slot provided clamping ring is used, the Clamping ring in the area of its radial slot under change the width of the radial slot adjustable in the circumferential direction is what the diameter of the clamping ring changes, and being as a locking counter-element on the inner circumference an inner circumferential groove is provided in the rear wall opening which is designed to engage with the clamping ring. This configuration has the advantage that the locking between the rear cover and the rear wall over the circumference evenly and with a single operation, namely the spreading of the clamping ring can.

In another embodiment, the rear wall cover is included provide a flange overlapping the rear wall opening, which can be attached to the rear wall, preferably for fastening the flange to the rear wall Bolts are provided.

A special design of the filter centrifuge is characterized in that the rear wall firmly with the Base frame is connected and that the process housing the back wall is removably attached. In this way can both the one with the filter drum and its storage provided bearing frame and the process housing removed and be replaced, so that a production-related Modification of a centrifuge, for example from one Peeling centrifuge on a push centrifuge with little effort is possible.

It is also advantageous if an independent of the bearing frame Closure cover provided for the rear wall opening is what when removing the filter unit and its Storage bearing frame a sealing the rear wall opening and thus completing the process housing is possible without another with a filter drum and their storage provided bearing frame back in the Process housing must be used.

Moving the storage frame and the ones mounted on it Filter drum is simplified when driving the filter drum a drive machine mounted on the base frame as well as one between the prime mover and the the filter drum driving filter drum shaft provided transmission member having. It is therefore only necessary the transmission link, for example a V-belt, to solve before the storage frame is moved. Thereby it is possible to replace the bearing frame without the drive must be converted at the same time.

In an advantageous development of the filter centrifuge According to the invention, the rear wall can be part of a partition between a clean room receiving the process housing and one receiving the base frame and the bearing frame Machine room of a building surrounding the filter centrifuge be. This way the filter centrifuge can be accurate to the point of separation between a clean room and a machine room of a building can be used, all Maintenance work on the machine is carried out in the machine room can without having to walk into the clean room is required.

Fig. 1

eine als Schälzentrifuge ausgestaltete Filterzentrifuge nach der Erfindung;

Fig. 2

die Filterzentrifuge nach Fig. 1 bei herausgefahrener Lagereinheit;

Fig. 3

die Filterzentrifuge aus Fig. 2 mit eingesetztem Verschlußdeckel;

Fig. 4

eine als Schubzentrifuge ausgestaltete Filterzentrifuge nach der Erfindung;

Fig. 5

die Filterzentrifuge nach Fig. 4 bei herausgefahrener Lagereinheit;

Fig. 6

die schematische Darstellung eines Umbaus einer erfindungsgemäßen Filterzentrifuge von einer Schälzentrifuge zu einer Schubzentrifuge;

Fig. 7 a) bis c)

unterschiedliche Abdichtungen des Rückwanddeckels;

Fig. 8 a) bis c

die Ausgestaltung einer mechanischen Verriegelung zwischen dem Rückwanddeckel und der Rückwand;

Fig. 9

eine alternative Befestigung des Rückwanddeckels in der Rückwand und;

Fig. 10 a) bis c)

alternative Ausgestaltungen der Abdichtung zwischen Rückwand und Rückwanddeckel.

The invention is explained in more detail below using an example with reference to the drawing. In this show:

Fig. 1

a filter centrifuge designed as a peeling centrifuge according to the invention;

Fig. 2

the filter centrifuge of Figure 1 with the storage unit extended.

Fig. 3

the filter centrifuge of Figure 2 with the cap inserted;

Fig. 4

a filter centrifuge designed as a push centrifuge according to the invention;

Fig. 5

the filter centrifuge of Figure 4 with the storage unit extended.

Fig. 6

the schematic representation of a conversion of a filter centrifuge according to the invention from a peeling centrifuge to a push centrifuge;

7 a) to c)

different seals of the rear wall cover;

8 a) to c

the design of a mechanical lock between the rear wall cover and the rear wall;

Fig. 9

an alternative fastening of the rear wall cover in the rear wall and;

10 a) to c)

alternative configurations of the seal between the rear wall and the rear wall cover.

Fig. 1 shows a first embodiment of the invention on Example of a peeler centrifuge. A base frame 1 is over Vibration bearings 12, 12 'on the floor 60 of a production building supported and fastened. On its top the base frame 1 is provided with a sliding track 10, that of at least one horizontally running rail 11 consists.

A bearing frame 2 comprises a horizontally arranged support tube 20, which via support feet 21, 21 'on support rollers 22, 22 'is supported. The support rollers 22, 22 'are on the Rail 11 mounted so that the bearing frame 2 with respect to the Base frame 1 is horizontally translationally movable.

In the support tube 20 there is a filter drum shaft 40 in bearings 28, 28 'rotatably mounted about a horizontal axis 40'. The The filter drum shaft 40 protrudes from the support tube 20 on both sides out, in the area of the respective opening of the support tube 20 a shaft seal protecting the respective bearings 28, 28 ' 29, 29 'is provided.

The base frame 1 has on its first (left in Fig. 1) Face a vertically extending wall, which forms the rear wall 13 of a process housing 3.

The process housing 3 is on the rear wall 13 on the Base frame 1 side facing away in a known manner, for example fixed with screws. The process case 3 encloses a process space together with the rear wall 13 30, which in its lower area with a Outlet opening 31 is provided for filtrate.

A filter drum 4 is located inside the process housing 3 provided on the first free end of the filter drum shaft 40 is attached and with this within the process room can rotate about the axis 40 '. The filter drum 4 has a peripheral jacket 41 in which a A plurality of radially extending filter openings 42 is provided. The one facing away from the filter drum shaft 40 The end face 43 of the filter drum 4 has a large central one Opening 43 'on. Through this central opening 43 ' a peeling knife 32 engages inside the drum and can with a peeling knife edge 32 'in the upper area of the Filter drum 4 on the inside of the peripheral jacket 41 issue. That on a penetrating the process housing 3 horizontal pivot shaft 32 '' pivoted For this purpose, peeling knife 32 is against the inside of the circumferential jacket 41 of the filter drum 4 pivoted to with the Peeling knife edge 32 'on the inside of the peripheral jacket 41 adhering filter cake during the rotation of the Peel filter drum 4. The removed filter cake falls into an inclined chute 33, which the opening 43 'of the filter drum 4 and the process housing 3 penetrates and in an outlet opening 33 'for the solid flows out.

Furthermore, there is a filling tube 34 inside the filter drum 4 provided for the suspension to be filtered, which in Direction of arrow 34 'is supplied.

A drive 5 is also provided on the base frame 1, a drive machine 50, for example an electric motor, which has a first V-belt wheel 52 and a V-belt acting as a power transmission member 51 the torque on one at the second free end of the filter drum shaft attached second V-belt pulley 44 transmits and in this way the filter drum 4 in rotation transferred.

The rear wall 13 is provided with a rear wall opening 14, whose clear width is larger than the diameter of the filter drum 4. In this way, when moving the storage frame the filter drum 4 penetrate the opening 14, so that the bearing frame 2 shown in Figure 1 together the filter drum 4 and the filter drum shaft 40 after the Loosen the transfer link 51 to the right can, the filter drum 4 from the process housing 3 is pulled out. This position is in Fig. 2 shown. Around the rear wall opening in the process housing 3 inserted filter drum 4 is to be closed on the front side of the bearing frame facing the process housing 2, a rear cover 23 is provided, which in its Dimensions and in its contour of the rear wall opening 14 corresponds. After the filter drum 4 with horizontal displacement of the bearing frame 2 from the process housing 3 has been pulled out, the rear wall opening 14 with a cover 14 'to be closed to the process room complete again, as can be seen in FIG. 3 is.

The rear wall 13 is part of a building partition 61 with which the building into a clean room 62, in which the process housing 3, and into a machine room 63, in which the base frame 1, the bearing frame 2 and the drive 5 are located, is divided. The sealing connection between the rear wall 13 and the building partition 61 and the floor 60 are elastic components 64, 65 represents

Another embodiment of FIGS Invention shown, it being the one shown there Filter centrifuge is a shear filter centrifuge. The Reference numerals in the illustration of Figures 4 and 5 are compared to Figures 1 to 3 increased by 100 each.

The one stored within the support tube 120 of the bearing frame 102 Filter drum shaft 140 is designed as a hollow shaft, and in it is an inner filter drum shaft 145 axial slidable, but rotatable with the filter drum shaft 140 connected, arranged. The filter drum shaft 140 is with the filter drum with a U-shaped cross section 104 connected. Inside the filter drum 104 is a also in cross section U-shaped filter drum insert 104 'provided that with the inner filter drum shaft 145 connected and axially displaceable with this is. The inner filter drum shaft 145 is on its from Filter drum insert 104 'opposite end with a piston 146 'provided, which is axially displaceable in a cylinder 146 is recorded. Axial actuation of the piston 146 ' and with it the filter drum insert 104 'takes place through Pressurization of the piston-cylinder unit 146, 146 ' in a manner known per se. The supply of pressurized fluid too which rotates with the inner filter drum shaft 145 Piston-cylinder unit 146, 146 'takes place via a rotary coupling connection 146 '' and a pre-stroke bore 147 or a return stroke bore 147 'in cylinder 146.

An axial displacement of the inner filter drum shaft 145 in the direction of the process housing 103 causes a shift of the filter drum insert 104 'in FIG left, causing filtrate to accumulate on the inside of the Circumferential casing 141 of the filter drum 104 has deposited, is pushed axially out of the filter drum and through the outlet opening 133 'for the solid the process housing leaves.

In the process room 130 there are also rinsing or washing pipes 135 provided with which rinsing or washing liquid the inside of the filter drum 104 and the filter drum insert 104 'can be brought. Structure and functionality the filter drum arrangement of this shear filter centrifuge are known in principle, but the storage such a shear filter centrifuge on the horizontal movable bearing frame 102 new.

Extending the filter drum arrangement of the shear filter centrifuge is done in the same way as related on Figures 1 and 2 has been described. The one from the Process housing 103 retracted arrangement of the filter drum 104 and the filter drum insert 104 'together with the bearing frame 102, the filter drum shaft 140, the inner filter drum shaft 145 acting as a push rod, the second V-belt pulley 144 and the piston-cylinder unit 146, 146 'and the rotary transmission connections 146' ' for the pressure fluid is shown in Figure 5. The drive unit 105 remains as in the execution 1, stationary on the base frame; it just has to Transmission member 151 can be solved. The length of the rail 111 is dimensioned so that the filter drum 104 is complete be moved out of the process housing 103 can.

Since the process housing 103 on the rear wall 113 can also be removed is attached, the filter centrifuge after the Invention are put together in modular form, with a Conversion of a peeling centrifuge into a push centrifuge, e.g. for a production changeover, quickly and can be done easily. Such a conversion is schematically shown in Fig. 6. There is the basic framework 1 with the drive 5 and the rear wall 13 shown. The Rear wall 13 is closed by means of the closure lid 14 ', so that a hermetic seal between the clean room 62 and the engine room 63 is guaranteed.

For the purpose of conversion, the process housing must be in the clean room 3 of the peeling centrifuge and the housing 103 of the Thrust centrifuge can be attached to the rear wall 13 what is symbolized by the two arrows A and A '. In the machine room 63, the extended storage frame 2 with the filter drum 4 of the peeler centrifuge from the sliding track 10 lifted off using a hoist, and the bearing frame 102 with the filter drum arrangement 104, 104 'and the piston-cylinder unit 146, 146 'of the pusher centrifuge is placed on the sliding track 10 (arrows B and B '). Once the cap 14 'has been removed and the opening 14 of the rear wall 13 is released, the Bearing frame 102 in the direction of the process housing 103 moved and locked, completing the conversion is. If necessary, a mechanical Locking the rear cover 123 in the Rear wall 13 take place.

In Figure 7 there are different sealing variants between the rear cover 23 and the rear wall 13 shown. Fig. 7a shows a simple touch seal, at which widens conically towards the bearing frame Inner circumference of the opening 14 and the process housing tapered outer circumference of the rear wall cover 23 touch.

In Fig. 7b, a sealing variant is shown, in which the rear wall cover 23 is provided with a circumferential groove 25 into which a sealing element 24 designed as an O-ring is inserted. The embodiment according to FIG. 7b already delivers good sealing results.

For even higher sealing requirements between Process room and environment or between process room and the machine room, the configuration according to FIG. 7c is suitable. There are 23 on the outer circumference of the rear wall cover two circumferential grooves 25, 25 'located axially one behind the other provided, in each of which is designed as an O-ring Sealing element 24, 24 'is used.

With large pressure differences between the process room and the environment or the machine room may be required be a mechanical interlock between the Provide rear wall cover 23 and the rear wall 13. Such mechanical locking is in Figures 8a, 8b and 8c, wherein FIG. 8c is a view in Direction of arrow X of Fig. 8b reproduces.

A first circumferential groove is on the outer circumference of the rear wall cover 23 25 provided in which a sealing element 24 is inserted is. The sealing element 24 acts, as in FIG. 7b, sealing with the inner circumference of the opening 14 of the rear wall 13 together. At an axial distance from the circumferential groove 25, the Facing machine room 63 is a further circumferential groove 27 formed in the rear cover 23. In the further circumferential groove 27 is a circumferential one, provided with a radial slot 26 ″ Clamping ring 26 'used. The clamping ring 26 'forms a locking element 26. For this purpose, the clamping ring 26 'in Area of its radial slot 26 '' with a screw connection 26 '' ', by means of which the clamping ring 26' while changing the width of the radial slot 26 '' in Circumferential direction is adjustable. This changes the Diameter of the clamping ring 26 '. On the inner circumference of the rear wall opening 14 an inner circumferential groove 15 is provided, which is designed to engage with the clamping ring 26 '.

If the rear wall cover 23 is inserted into the rear wall 13, then the clamping screw connection 26 '' 'is actuated in such a way that the width of the radial slot 26 '' increased. Thereby the circumference of the clamping ring 26 'and the clamping ring 26' grows migrates radially outward into the inner circumferential groove 15 of the Rear wall 13 without the circumferential groove 27 of the rear wall cover 23 leaving in the process. This position of the clamping ring is in Figures 8b and c shown. This way only by operating only one clamping screw connection an effective mechanical interlock between the Rear wall 13 and the rear wall cover 23 created. By Actuation of the clamping screw in the opposite Direction can lock this again easily be solved.

FIG. 9 shows an alternative fastening option for the Rear cover on the rear wall, with the reference numerals compared to the first embodiment shown in Figure 1 of the invention are increased by the value 300. The back wall-313 and the rear cover 323 are on the in Figure 7b sealed manner by means of a seal 324 shown. Of the Rear wall cover 323 has a rear wall opening 314 overlapping flange 323 ', which is by means of bolts 323 '' can be attached to the rear wall 313.

Figure 10a shows an alternative embodiment of the seal between the rear wall and the rear wall cover, wherein the reference numerals compared to the first embodiment the value 200 is increased. In Figure 10a is a simple one Seal shown, in which the rear wall 213 in the area of Opening 214 is stepped, the opening a section 214 'smaller on the process room side Diameter and a machine room-side area 214 '' has a larger diameter. Between these two A radial annular surface 214 '' 'is formed in diameters. The rear wall cover 223 is also in the area of its outer circumference adapted graduated, with a process room side Circumferential portion 223 'of smaller diameter and a machine room side peripheral portion 223 "larger Diameter are provided over a radial surface 223 '' 'are interconnected.

FIG. 10b shows an embodiment with better sealing properties shown, wherein in the radial annular surface 223 '' 'of Rear wall cover 223 a groove 225 is provided, in which a seal 224 is inserted. The design according to Figure 10c is for particularly high demands on the seal provided, in addition to that shown in Figure 10b Seal another groove 225 'in the process room Circumferential portion 223 'of the rear cover 223 is formed and is provided with a seal 224 '.

By dividing the machine frame of the filter centrifuge in the base frame 1 and the bearing frame 2 is a simplified construction of a filter centrifuge created the it allows the vertical integration in the manufacture of a Reduce filter centrifuge. If the basic framework is multiple Machine types are identical in how this relates has been described with Fig. 6, so not only one easy replacement of individual parts, such as the Filter drum, but it can also be done quickly be switched from one centrifuge type to another, what for example in the case of production changes or when the product properties of the product to be changed Product is required.

Claims (15)

1. Filter centrifuge having

   a machine frame, which has a base frame (1) and a support frame (2),

   a process housing (3), which is attached to the base frame (1) and has an opening (14),

   a filter drum (4), which is cantilevered by means of a mounting on the support frame (2) and is inserted through the opening (14) into the process housing (3), in which the filter drum (4) is arranged to rotate around a horizontal axis, and

   a drive (5) for the filter drum (4), the drive (5) being arranged on the machine frame,
   characterised in that

   a displacement means is provided for displacing the support frame (2) with the mounting and the filter drum (4) in relation to the process housing (3) in an axial direction of the filter drum (4),

   that the displacement means has a displacement path (10) provided on the base frame (1),

   that the support frame (3) is disposed to run on the displacement path (10),

   that the filter drum (4) may be run along the displacement path (10) through the opening (14) between a first position, in which the filter drum (4) is inserted into the process housing (3), and a second position, in which the filter drum (4) is completely pushed out of the process housing (3), and

   that a rear wall cover (23) is provided on the support frame (2), through said cover the opening (14) may be tightly closed simultaneously with the filter drum (4) running into the first position.
2. Filter centrifuge according to Claim 1, characterised in that the displacement path (10) is formed by rails (11), on which support rollers (22, 22') provided on the support frame (2) roll.
3. Filter centrifuge according to one of the preceding claims, characterised in that a rear wall (13) closing off the process housing (3) towards the support frame (2) has the opening (14), the width of which is larger than the diameter of the filter drum (4), and that the rear wall cover (23), whose contour and dimensions are adapted to the opening (14) in the rear wall (13), is provided on the face section of the support frame (2) pointing towards the process housing (3).
4. Filter centrifuge according to Claim 3, characterised in that at least one sealing element (24) is provided between the outer circumference of the rear wall cover (23) and the inner circumference of the rear wall opening (14).
5. Filter centrifuge according to Claim 4, characterised in that the sealing element (24) is provided in a first circumferential groove (25) In the rear wall cover (23).
6. Filter centrifuge according to one of Claims 1 to 5, characterised in that the inner circumference of the opening (14) widens in the manner of a cone towards the support frame (2), and that the outer circumference of the rear wall cover (23) tapers conically towards the process housing (3).
7. Filter centrifuge according to one of Claims 3 to 6, characterised in that a mechanical locking means is provided between the rear wall (13) and the rear wall cover (23).
8. Filter centrifuge according to Claim 7, characterised in that the mechanical locking means has at least one locking element (26), which is moveable in the radial direction, is supported on one of the two parts to be locked, the rear wall (13) or rear wall cover (23), and interacts with a locking counter-element on the other of the two parts to be locked.
9. Filter centrifuge according to Claim 8, characterised in that the rear wall cover (23) has a further circumferential groove (27), in which a circumferential clamping ring (26') provided with at least one radial slot (26'') is inserted as locking element,

   that by variation of the width of the radial slot (26''), the clamping ring (26') is adjustable in circumferential direction in the region of its radial slot (26''), as a result of which the diameter of the clamping ring (26') changes, and

   that an inner circumferential groove (15) is provided as locking counter-element on the inner circumference of the rear wall opening (14) for engagement with the clamping ring (26').
10. Filter centrifuge according to Claim 7, characterised in that the rear wall cover (323) is provided with a flange (323'), which engages over the rear wall opening (314) and can be fastened to the rear wall (313).
11. Filter centrifuge according to Claim 10, characterised in that screwbolts (323'') are provided to fasten the flange (323') to the rear wall (313).
12. Filter centrifuge according to one of the preceding claims, characterised in that the rear wall (13) is fixedly connected to the base frame (1), and that the process housing (3) is removably fastened to the rear wall (13).
13. Filter centrifuge according to one of the preceding claims, characterised in that a sealing cover (14') independent of the support frame (2) is provided for the rear wall opening (14).
14. Filter centrifuge according to one of the preceding claims, characterised in that the drive (5) of the filter drum (4) has a drive motor (50) disposed on the base frame (1) and also a transmission element (51) provided between the drive motor (50) and the filter drum shaft (40) driving the filter drum (4).
15. Filter centrifuge according to one of the preceding claims, characterised in that the rear wall (13) is part of a partition wall between a clean room receiving the process frame (2) and a machine room receiving the base frame (1) and the support frame (2) of a building surrounding the filter centrifuge.

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