EP1830739A1

EP1830739A1 - Dynamic mixer

Info

Publication number: EP1830739A1
Application number: EP05818981A
Authority: EP
Inventors: Roberto Cutri
Original assignee: Sika Technology AG
Current assignee: Sika Technology AG
Priority date: 2004-12-13
Filing date: 2005-12-13
Publication date: 2007-09-12
Also published as: CN101111203A; CN101111203B; CA2621540A1; JP4944039B2; BRPI0517169A; EP1669131A1; MX2007006788A; JP2008522803A; WO2006063997A1

Abstract

The dynamic mixer comprises a rotor (2), which is coupled to a drive shaft (3) and which is rotationally mounted in a mixing chamber (15) provided inside a rotor housing (1). At least one first and one second constituent (K1, K2, ) can be fed to said mixing chamber. According to the invention, the drive shaft (3) comprises at least one wavy channel (31) via which the second constituent (K2) can be introduced into the mixing chamber (15). The complexity of the mixing device is reduced considerably by virtue of the fact that the second constituent (K2) is fed through the channel (31) provided in the drive shaft (3),. No separate connection for supplying the second constituent (K2) is provided on the rotor housing whereby enabling the rotor housing to have an exceptionally simple design and to be economically produced. In addition, the assembly and disassembly of parts are simplified, particularly of the rotor and rotor housing, which can be disposed of or cleaned after the mixer has been used. The inventive dynamic mixer can thus be disposed of or cleaned after use and can be repeatedly reused.

Description

Dynamic mixer

Technical area

The invention is based on a device for mixing at least two flowable components according to the preamble of the first claim.

State of the art

Mixing devices are generally used where two or more streams of flowable materials or components have to be mixed to form a completely or partially mixed common flowable material stream. Mixing devices are used, which are disposed of after use or cleaned and reused several times.

From the adhesives industry, the use of blending devices for mixing reactive components is known, serving both for substantially homogeneous blending of the components of multi-component adhesives and for layer-wise blending of cure accelerators into one-component adhesives. Known static mixers in which the mixing is done by repeated division of the material strand, and dynamic mixers in which the processed components are divided by a moving element multiply or even swirled.

Static mixers having no moving parts (see for example WO 02/32562 A1) are particularly suitable for mixing low viscosity materials.

In particular, for the mixture of highly viscous substances therefore dynamic mixers are preferably used with a rotor which is rotatably arranged in a mixing chamber into which the substances to be mixed are introduced. Mixing devices of this type are described for example in EP 0301201 A1, EP 1 106243 A2, DE 101 12904A1 and EP 1 106243 A2.

The devices described in these documents have a rotor housing which is provided with two of the introduction of the components to be mixed material openings and a drive opening through which a drive shaft is positively inserted into a recess of the rotor.

In the known mixing devices, various problems arise. For the supply of the components to be mixed and the connection of the drive shaft, different openings and connections are to be provided on the rotor housing, which results in correspondingly high production costs. In particular, in the mixture of reactive components, the mixing device after a relatively short period of operation to replace, so the user side correspondingly high costs for the purchase and disposal of the mixing device arise. Furthermore, results in the mixing of separated supplied through two openings materials a relatively high energy consumption, which leads to an undesirable heating of the reactive substances.

Further undesired heating of the mixed product is to be expected since the rotor seated on the drive shaft is held in position by the rotor housing in the case of disposable embodiments and therefore rubs against it during operation.

If components with different volume fractions are used, the known mixing device may need to be adjusted accordingly with additional effort. In the case of the device described in DE 101 12904 A1, a delay chamber is provided for one of the components for this purpose. To realize this delay chamber corresponding molds are necessary.

Furthermore, the material flow and the mixing ratio in the mixing devices mentioned are not adjustable, which is why corresponding controllable drive devices or differently configured mixing devices are required.

Presentation of the invention

The invention has for its object to provide an improved dynamic mixer of the type mentioned.

The dynamic mixer is designed to be simple, inexpensive to produce and easy to use. Parts of the mixing device, which are to be disposed of after use of the mixing device, should be particularly simple and inexpensive and can be produced only with little material. Furthermore, the mixing chamber and any transfer chambers of the dynamic Mixers can be realized with small volumes, so that when complete replacement or maintenance of the dynamic mixer only a little mixed material needs to be disposed of or removed.

Furthermore, it would be desirable if the mixing process could be carried out with lower energy consumption, so that the material wear and the resulting process heat are reduced.

Furthermore, it would be desirable if different mixing ratios of the supplied components could be realized with only one device, wherein the mixing ratios should preferably be variably adapted to the needs of the user.

According to the invention, this object is achieved by the features of the first claim. Further advantageous embodiments of the invention will become apparent from the dependent claims.

The dynamic mixer has a rotor coupled to a drive shaft, which is arranged rotatably in a mixing chamber provided in a rotor housing, to which at least a first and a second component K1, K2 can be fed. According to the invention, the drive shaft has at least one channel through which the second component K2 can be introduced into the mixing chamber.

By feeding the second component K2 through the channel provided in the drive shaft, the complexity of the mixing device is considerably reduced. For the supply of the second component K2 no separate connection to the rotor housing is provided, which is why this can be made extremely simple and inexpensive. Furthermore, simplifies the manufacture, maintenance and assembly and disassembly of parts, in particular the rotor and the rotor housing, which are to be disposed of after use. The rotor, which has a body provided with rotor blades whose longitudinal axis is preferably aligned coaxially to the axis of the drive shaft, preferably has a coupling cylinder, in which the drive shaft is insertable, which has at least one closure element, by means of which the drive shaft rotatably coupled to the rotor is. Preferably, the connection of the rotor and the drive shaft with a screw or bayonet connection, so that the rotor is held firmly and can not abut on the rotor housing, whereby the generation of frictional heat is avoided, the running between the two components K1, K2 reaction processes can accelerate.

Preferably, the rotor and the drive shaft can be connected to one another in such a way that the second component K2 can only pass through one or more transfer channels in the rotor to zones in the mixing chamber through which the first component K1 flows. This results in various advantages. The second component K2 can advantageously be divided into different streams which impinge on the first component K1 in different zones of the mixing chamber. A uniform mixing can therefore be achieved with fewer rotor rotations and thus low mechanical energy and therefore reduced process heat, which is particularly advantageous for highly viscous substances. Premature curing of parts of the mixed product within the mixing chamber can therefore be avoided, so that the service life of the parts to be replaced after use significantly extended.

By a preferred embodiment of the rotor, the transport of the first component K1 into the mixing chamber and the transport away of the mixed product K1 xK2 from the mixing chamber can also be accelerated. For example, on the outside of the coupling cylinder, a preferably helically extending conveyor element and / or an output screw is provided at the output end of the rotor body. In a further preferred embodiment, the rotor housing provided with an outlet opening has only one inlet opening into which the drive shaft, which may already be connected to the rotor, and also the first component can be inserted. As a result, this inlet opening and thus the entire rotor housing can be made extremely simple and manufactured with minimal effort.

The rotor housing can be formed in a simple manner by a front end provided with an end piece cylindrical piece which is tightly connectable with an opening of a first device body through which the drive shaft and thus the second component is guided and in which a first transfer chamber is formed, which is connected to the outlet opening of a first supply device, preferably a first valve, through which the first component K1 is insertable into the first transfer chamber and further along the drive shaft into the mixing chamber.

The cylindrical piece provided on the rotor housing has, for example, an external thread or an external flange which can be connected to an internal thread of the first transfer chamber or to a flange connected to the first transfer chamber by means of a union nut and provided with an external thread. The rotor and the rotor housing can therefore be quickly assembled and disassembled with a few simple steps.

To introduce the second component K2 into the wave channel, this is directly or via an input channel with one in the first or in a second

Device body provided second transfer chamber connected, in which the drive shaft protrudes or through which the drive shaft is passed, and which is connected to the outlet opening of a second supply device, preferably a second valve, through which the second component K2 is inserted into the shaft channel.

The outlet opening of the first and / or second valve, which is mechanically, hydraulically or pneumatically actuated, is preferably by means of a Needle apparently or lockable, which is axially displaceably mounted within the valve body by means of an elastic bearing element, which closes the valve chamber adjoining the outlet opening and an inlet opening tight. In a preferred embodiment, the elastic, preferably made of plastic or spring steel bearing element having at least approximately the shape of a plate or cylinder, preferably anchored adjacent to the valve chamber in an annular groove, so that the machined component K1; K2 can not penetrate between the bearing element and the wall of the valve chamber. In contrast to piston-like bearing elements, which are guided along the wall of the valve chamber, no impairment of the operation of the valve by the machined component can take place in the inventive solution. The bearing element has the functions of a membrane, the edges of the valve chamber dense wears and is deflected only in the middle, to guide the held needle axially. The needle has, for example, at least one annular flange on which is held by the bearing element or embedded therein.

The inventive solution also allows the amounts of subsidized components K1, K2 and the flow rates with simple

Set measures. For this purpose, the drive shaft in the flow region of the two components K1, K2 is provided with corresponding metering elements, for example metering rings, which inhibit the material flow. Furthermore, the volume in the first transfer chamber can be reduced by a metering ring so that the delay time after which the first component K1 enters the mixing chamber can be set. DE 101 12904 A1 describes that the use of a delay chamber may be desirable. By using appropriate metering rings, the

Transfer chamber can therefore be extended to a delay chamber with variable volume and variable delay time.

The inventive dynamic mixer is therefore ideal for mixing components with different volume fractions. By appropriate dimensioning of the device parts, in particular the drive shaft or the dosing, the device can be optimized in a simple manner with respect to the desired volume ratios.

The components can be introduced into the transfer chambers via supply lines or from locally mounted cartridges. The dynamic mixer according to the invention can be advantageously realized, in particular with low inertia of the components used, even without attached valves. In a simple manner, of course, the connection of more than two supply lines or valves is possible to deliver components that are guided within, for example in a further wave channel, or outside the drive shaft to the mixing chamber.

Short description of the drawing

In the following, embodiments of the invention will be explained in more detail with reference to the drawings. The same elements are provided in the various figures with the same reference numerals. The flow direction of the media is indicated by arrows.

Show it:

1 shows a longitudinal section through a dynamic mixer according to the invention, which has a rotor 2 arranged in a housing 1 at the front, which is connected to a drive shaft 3 which can be connected by means of a coupling piece 91 to a drive device and which are separated by two

Transfer chambers 49, 59 are provided, which are provided in the bodies of two valves 4, 5, which serve to control the supply of the components to be mixed K1, K2; Fig. 2 is a detail view of Figure 1, in which the coupling of the rotor 2 and the drive shaft 3 is shown;

3 shows a further detailed view of FIG. 1, in which the flow of the first and second components K1, K2 from the valves 4, 5 into the mixing chamber 15 is shown;

4 is a sectional view of the first valve 4, through which the first component K1 is introduced into the mixing chamber 15;

5 is a sectional view of the second valve 5, through which the second component K2 is introduced into the mixing chamber 15;

Fig. 6a shows the first valve 4 'in a preferred embodiment with a needle 43 which is held by an elastic bearing member 440;

FIG. 6b shows the valve 4 'of FIG. 6a with the needle 43 deflected upwards and the outlet opening 412 opened thereby;

Fig. 7a, the valve 4 "of Figure 6a in a further preferred embodiment with a needle 43 which is held by a one-sided supported, compressible bearing element 440 ';

7b, the valve 4 "of Figure 7a with upwardly deflected needle 43 and thereby opened outlet opening 412;

Fig. 7c, the valve 4 "of Figure 7a with a bilaterally supported, compressible bearing element 440 '. Only the elements essential for the immediate understanding of the invention are shown. Not completely shown, for example, required for the operation of the dynamic mixer drive unit. 9

Way to carry out the invention

Fig. 1 shows the inventive dynamic mixer in a sectional view. The dynamic mixer consists essentially of a preferably rotationally symmetrical and thus easy to manufacture rotor housing 1, within which a mixing chamber 15 is provided, in which at least a first and a second component K1, K2 can be mixed. In the mixing chamber 15, a rotor 2 having a body 21 provided with wings 21 1 is rotatably supported by a drive shaft 3 having a shaft passage 31 through which the second component K 2 is insertable into the mixing chamber 15.

In the illustrated embodiment, the rotor housing 1 has an outlet opening 152 serving to deliver the mixed product K1 xK2 and only a single inlet opening 151, through which the components K1, K2 and the drive shaft 3 to be mixed can be inserted into the rotor housing 1. The rear part of the rotor housing 1 is formed by a cylindrical piece 1 1, which is closed at the front by a provided with the outlet opening 152 end piece 13.

The drive shaft 3 is guided through two adjoining device bodies 41, 51, through which the components K1, K2 to be mixed are introduced into the mixing chamber 15. For this purpose, the device bodies 41, 51 are provided with valves 4, 5, which have a valve chamber 42; 52 with an inlet opening 421; 521 and an outlet opening 422, 522, which by means of a pneumatically or hydraulically actuated Valve needle 43; 53 can be completed or opened. Between the walls of the guided through the two device bodies 41, 51 openings 41 1, 511 and the drive shaft 3 provided therein, a first and a second transfer chamber 49; 59, in which the through the outlet openings 422; 522 passed through components K1, K2 enter. As shown in FIG. 3, the first component K1 is supplied to the mixing chamber 3 through the first transfer chamber 49 along the outside of the drive shaft 3. The second component K2 is introduced from the second transfer chamber 59 through an input channel 32 provided in the drive shaft 3 into the shaft channel 31 and further conveyed to the mixing chamber 15.

The first transfer chamber 49 is separated by means of a first seal 351 on one side of bearing elements 36, by means of which the drive shaft 3 is rotatably supported within the device body 41, 51. On the other hand, the first transfer chamber 49 is opened against the mixing chamber 15. The second transfer chamber 59 is closed on both sides by means of second and third seals 352, 353, so that the supplied second component K2 can only escape via the input channel 32 and the shaft channel 31 of the drive shaft 3.

The connection of the rotor 2 and the shaft 3, in this preferred embodiment, is shown enlarged in Figure 2. The rotor 2 has on the input side an integrally formed on the rotor body 21 coupling cylinder 22, within which the provided with the outlet opening of the shaft 31 end piece of the drive shaft 3 is anchored. For this purpose, a preferably metal coupling sleeve 7 is integrated into the coupling cylinder 22, which has at least one coupling channel 71 into which a coupling element 33 connected to the drive shaft 3 can be introduced and locked, so that a bayonet closure results. The inner wall of the coupling sleeve 7 is close to the drive shaft 3, so that the second component K 2 emerging therefrom only by transfer channels 72, 212 in the coupling sleeve 7 and in the coupling cylinder 22 in zones of the mixing chamber 15th can pass, which are traversed by the first component K1. For mutual separation and sealing of the individual zones and chambers of course, sealing elements such as O-rings are advantageously placed on the drive shaft 3. In the rotor 2, one or more transfer channels 212 can be guided, by which the second component K2 is divided into a plurality of streams, which are guided to arbitrary locations in the mixing chamber 15. The mixing of the components K1, K2 takes place in this preferred embodiment, therefore, not by the rotor 2 alone, but is favored by the targeted division and feeding the second component K2. The required mixing of the components K1, K2 can therefore already be achieved with a few rotations of the rotor 2, for which reason less heat is supplied to the mixed product K1xK2, which would accelerate undesired reaction processes therein. Due to the stable mounting of the rotor 2 is further prevented that it can slide forward or tilt to the side and rub against the inner wall of the rotor housing 1, whereby the mixed product K1 xK2 again disturbing frictional heat would be supplied. In the case of the dynamic mixer according to the invention, therefore, a significant amount which disturbs the mixing process and interferes with the reaction process of the components K1, K2 is significantly reduced.

From Figure 2 it is further seen that the coupling cylinder 22 has on the outside thereof a screw thread which serves as an input screw 221, through which the first component K1 accelerated or delayed in the mixing chamber 15 is promoted. In the region of the coupling cylinder 22 can be formed by appropriate choice of the screw thread or the sense of rotation and the pitch height a chamber 16 with a corresponding delay or acceleration, without the rotor housing 1 would have to be designed more expensive. By means of the output screw 23 integrally formed on the rotor body 21, the generated mixed product K1 xK2 is conveyed towards the outlet opening 152 of the rotor housing 1. The rotor housing 1 can be made extraordinarily simple despite the implemented functions. Since both components K1, K2 and the drive shaft 3 are introduced only through an opening 151, only the elementarily configured cylinder piece 1 1 can be provided on the input side, which is inserted into the correspondingly adapted opening 41 1 of the first device body 41. For attachment of the rotor housing 1, the cylinder piece 1 1 has an outer flange 12 which is pulled by means of a union nut 6 against a flange 48 formed on the first device body 41 and provided with an external thread. The mounting and dismounting of the rotor housing 1 can therefore be carried out in a few steps. Due to the separate into the mixing chamber 15 into the supply of the components K1, K2 bonding of coupling and connecting elements 3, 7 and 6, 22, 48 is avoided. The device parts 1, 2, 3, 4 can therefore be easily solved and cleaned from each other.

The use of the drive shaft 3 for the internal and external transfer of the components K1, K2 also makes it possible to adjust the material flows in a simple manner. For this purpose, as shown in Figure 3, a first metering ring 81 are placed on the drive shaft 3, which partially fills the first transfer chamber 49 and reduces its cross section. Therefore, the flow rate of the material K1 transported through the first transfer chamber 49 can be increased and the flow amount due to the increased resistance can be simultaneously reduced. With a second metering ring 82, the diameter of the outlet opening of the shaft channel 31 can be reduced. The metering rings 81, 82 have, for example, an internal thread, for which a corresponding external thread is arranged on the drive shaft 3. Further, in the shaft channel 31, an insert can be used with a hole provided therein, which has a reduced diameter. Furthermore, a cover provided with an outlet opening can be placed on the drive shaft 3. From Figure 1 it can be seen that the rotor housing 1, the rotor 2 and the drive shaft 3, which is coupled by means of a coupling element 91 with a drive device 9, are aligned coaxially to an axis x. Instead of the valve bodies 41, 51 shown in FIG. 1, a single device body can also be used, to which supply lines for the components K1, K2 can be connected. The dynamic mixer can therefore be built extremely narrow and therefore easy to operate.

The valves 4, 5 can, as shown in Figures 1, 4 and 5, advantageously be integrated into the dynamic mixer. Preferably, for each component supplied, K1; K2 a separate valve 4, 5 with its own valve body 41, 51 used, which has a through hole or bore 411, 511 for the passage of the drive shaft 3. As mentioned above, the valve bodies have a valve chamber 42; 52 with an inlet opening 421; 521 and an outlet opening 422, 522, by means of a pneumatically or hydraulically actuated valve needle 43; 53 can be closed or opened in order to control the inflow of the first or second component K1, K2 into the associated transfer chamber 49, 59. The valve needle 43; 53 is by means of a bearing element 44; 54 axially displaceably mounted and by a piston 46; 56 held in a pressure chamber 45; 55 is slidably mounted, via a pressure channel 451; 551 a pneumatic or hydraulic medium can be fed. The pressure chamber 45; 55 is above by means of a lid 452; 552 completed, in which a spring 47; 57 is held, which the piston 46; 56 and thus the valve needle 43; 53 always pushes down, so that the outlet opening 422; 522 is always closed when no medium in the pressure chamber 45; 55 is pressed.

The valve needle 43; 53, the one-sided in contact with the supplied component K1; K2 stands, is therefore within the bearing element 44; 54 axially displaced or it is the valve needle 43; 53 together with the bearing element 44; 54 postponed. There is a risk that the relevant component K1; K2 in the area between the bearing element 44; 54 and the valve needle 43; 53 or in the area between the Bearing element 44; 54 and the outer wall can penetrate, whereby the bearing function is impaired.

This problem is solved in the valve 4 'shown in Figures 6a and 6b by instead of an inelastic bearing member 44, an elastic bearing member 440 is used, which is peripherally held, for example, in an adjacent to the valve chamber 42 annular groove 414 and centrally connected to the valve needle 43 , As shown in the figures, the valve needle 43 may be enclosed by an annular flange 432, which is embedded in the existing example of plastic bearing element 440th The bearing element 440 can also adjoin an annular flange 432 on both sides. During operation of the valve 4 ', as shown in FIG. 6b, the peripherally supported bearing element 440 is deflected by the valve needle 43 in the manner of a membrane, so that the closure piece 431 provided thereon releases the outlet opening 422 of the valve chamber 42. The valve needle 43 can in turn be operated mechanically, pneumatically or hydraulically.

The advantage of this device is therefore that the bearing element 440 reliably seals the valve chamber 42, so that a maintenance-free operation of the valve 4 'is ensured. It is also advantageous that the restoring force required for the operation of the valve 4 'is generated completely or at least partially by the bearing element 440, so that a return spring 47 can optionally be dispensed with.

6a shows a further preferred embodiment of the first valve 4 "of FIG. 6a. Instead of the elastic bearing element 440 in the embodiment there, a compressible bearing element 440 'is provided which holds the needle 43 and supports it in a vertically displaceable manner. consists of a soft elastic, compressible material, such as a very soft elastomer.

Particularly advantageous in this embodiment is that the needle 43 is precisely guided even in this solution, but no deflection, but only one Local compression of the bearing element 440 'and therefore no or only a minimal material displacement when closing the valve 4 "or in the return of the needle 43. If the annular flange 432 is held inside the compressible bearing element 440', only the in Figure 7b shown compression of an internal material segment, in which virtually no external deformation of the bearing element 440 'occurs. Disturbing pressure changes during opening and closing of the valve 4 ", which lead to an uncontrollable application pattern, are thus avoided by means of the compressible bearing element 440'.

Thus, the bearing member 440 'is compressed, but not deflected, on the upper side of a closure plate 414A is provided, which has an opening of the needle 43 serving opening and in this preferred embodiment, an external thread by means of which it is bolted to an inner flange 414C, the the annular groove 414 bounded on one side.

FIG. 7b shows the valve 4 "of FIG. 7a with the needle 43 pivoted upwards and the outlet opening 412 opened as a result. Furthermore, it is shown schematically that material of the bearing element 440 ', locally between the annular flange 432 and the end plate 414A, in this position of the needle 43 is compressed, without resulting in a significant external deformation of the bearing member 440 '.

Also in this embodiment, the bearing member 440 'seals the valve chamber 42 reliably, so that a maintenance-free operation of the valve 4 "is guaranteed.

Figure 7c shows the valve 4 "of Figure 7a with the compressible bearing element 440 'supported on both sides by end plates 414A, 414B. In this configuration, external deformations and deflections of the bearing element 440' are prevented in both directions, so that the valve functions continue be optimized. The dynamic mixer according to the invention has been described and illustrated in preferred embodiments. On the basis of the principles of the invention further expert refinements can be easily realized. In particular, the device body 41, 51, in which the drive shaft 3 is mounted and the front side is connected to the rotor housing 1, designed in various ways and so adapted to the needs of each user. The device body 41, 51 may consist of one or more interconnected elements. Valves may be provided on or in the device body 41, 51 or even on an external pressure generator connected to the dynamic mixer via supply lines. The connection between the rotor housing 1 and the device body 41, 51 and the connection between the rotor 2 and the drive shaft 3 can also be done in other ways. Furthermore, a plurality of shaft channels 31 may be provided in the drive shaft 3. By the drive shaft 3, components K1 are preferably transported with lower volume fractions. However, the volume fractions can be chosen freely; by appropriately selecting or adjusting the appropriate device parameters or metering elements.

The simple construction of the apparatus further allows the mixing chamber 15, the delay chamber 16, if provided, and the transfer chambers 49, 59 to be realized with minimal volumes, so that only a small amount of mixed material is disposed of or removed upon complete replacement or maintenance of the dynamic mixer got to.

The connection of the drive shaft 3 to the rotor 2 has been shown in a preferred embodiment. Of course, it is also possible to use a transmission, for example an angle gear. LIST OF REFERENCE NUMBERS

1 rotor housing

1 1 cylinder piece

12 outer flange

13 tail

15 mixing chamber

151 inlet

152 outlet opening

16 delay chamber in the rotor housing

2 rotor

21 rotor body

211 rotor blades

22 coupling cylinders

221 input screw on the coupling cylinder 21

23 output screw

3 drive shaft

31 wave channel

32 input channel

33 closure elements, anchored in the drive shaft 3

351 first seal on the drive shaft 3

352 second seal on the drive shaft. 3

353 third seal on the drive shaft. 3

36 storage unit

4, 4 ', 4 "first valve 41 valve body

411 opening for the passage of the drive shaft 3

414 annular groove for receiving the elastic bearing element 440th

414A top cover plate 414B lower cover plate

42 valve chamber

421 inlet opening to the valve chamber 42

422 outlet opening to the valve chamber 42nd

43 Locking pin

431 stopper

432 Ring flange

44 inelastic bearing element

440 elastic bearing element

440 'compressible bearing element

45 pressure chamber

451 pressure channel

452 cover

46 pistons

47 spring

48 flange

49 first transfer chamber

5 second valve

51 valve body

511 opening for the passage of the drive shaft 3

52 valve chamber

521 inlet opening to the valve chamber 52

522 outlet opening to the valve chamber 52

53 valve pin

55 inelastic bearing element

55 pressure chamber

551 pressure channel

552 cover

56 pistons

57 spring

59 second transfer chamber Nut

coupling sleeve

coupling channel

Transfer channels in the coupling sleeve 7 first metering second metering ring

driving device

coupling element

Claims

claims

A dynamic mixer with a rotor (2) coupled to a drive shaft (3) and rotatably arranged in a mixing chamber (15) provided in a rotor housing (1), comprising at least a first and a second component (K1, K2,. ..) can be supplied, characterized in that the drive shaft (3) has at least one shaft channel (31) through which the second component (K2) in the

Mixing chamber (15) is insertable.

2. Device according to claim 1 or 2, characterized in that the rotor (2) has a rotor blades (21 1) provided body (21) whose longitudinal axis (x2) preferably coaxially aligned with the axis (x3) of the drive shaft (3) is, and having a coupling cylinder (22) into which the drive shaft (3) can be inserted, which has at least one first closure element (33), by means of which the drive shaft (3) and the rotor (2) are rotatably coupled.

3. Device according to claim 2, characterized in that the rotor (2) and the drive shaft (3) are preferably connectable to each other by means of a screw connection or a bayonet connection such that the second components (K2) only through the rotor (2) in at least one zone of the mixing chamber (15) can pass, which is traversed by the first component (K1).

4. Apparatus according to claim 1, 2 or 3, characterized in that the rotor (2) has one or more transfer channels (212) through which the through the shaft channel (31) supplied second component (K2) through the coupling cylinder (22) and / or through the body (21) of the rotor (2) can pass into the zones of the mixing chamber (15), which are flowed through by the first component (K1).

5. Apparatus according to claim 2, 3 or 4, characterized in that the coupling cylinder (22) on the outside thereof has a preferably helically extending conveying element (221) and / or that the rotor body (21) has an output screw (23) on the output side.

6. Device according to one of claims 2 to 5, characterized in that the preferably rotationally symmetrical designed rotor housing (1) on the one hand an end piece 13 with an outlet opening

(152) for the mixed components (K1 x K2) and on the other hand, a cylinder piece (1 1) having an inlet opening (151) for the supply of the two components (K1, K2), in which the possibly already with the rotor (2) connected drive shaft (3) is preferably coaxial with the cylinder piece (11) can be inserted.

7. The device according to claim 6, characterized in that the cylindrical piece (1 1) sealingly connected to a first device body (41) provided in the first transfer chamber (49) is connected, through which the drive shaft (3) is guided and with the outlet opening (422) of a first supply device, preferably a first valve (4) is connected, through which the first component (K1) in the first transfer chamber (49) and further along the drive shaft (3) into the mixing chamber (15) insertable is.

Device according to claim 6 or 7, characterized in that the wave channel (31) is connected directly or via an input channel (32) to a second transfer chamber (59) provided in the first or a second device body (41; 51) the drive shaft (3) protrudes or through which the drive shaft (3) is passed, and which is connected to the outlet opening (522) of a second supply device, preferably a second valve (5) is, through which the second component (K2) in the shaft channel (31) can be inserted.

9. Device according to one of claims 2 to 8, characterized marked, that the cylinder piece (1 1) has an external thread or a

Outer flange (12) which is connectable with an internal thread of the first transfer chamber (49) or by means of a union nut (6) connected to the first transfer chamber (49), provided with an external thread flange (48).

10. Apparatus according to claim 7, 8 or 9, characterized in that the outlet opening (422; 522) of the first and / or second valve (4; 5), which is mechanically, hydraulically or pneumatically actuated by means of a needle (43; 53), which is displaceably mounted within the valve body (41; 51) by means of an elastic and / or compressible bearing element (440) which is connected to the outlet opening (422; 522) and to an inlet opening (421; 521). subsequent valve chamber (42, 52) tightly closes.

1 1. A device according to claim 10, characterized in that the, preferably made of plastic or spring steel elastic bearing element (440) or preferably made of a soft elastomeric compressible bearing element (440 '), which has at least approximately the shape of a plate or cylinder .

a) is anchored adjacent to the valve chamber (42; 52) preferably in an annular groove (41 1); and or

b) enclosing a ring flange (432) surrounding the needle (43); and or

c) the restoring force required for the operation of the valve (4 ') completely or at least partially generated.

12. Device according to claim 10 or 1 1, characterized in that the compressible bearing element (440 ') is supported on the upper side or on the upper side and the lower side, preferably by means of cover plates (414A; 414B).

13. Device according to one of claims 1 to 12, characterized in that the drive shaft (3) with at least one metering ring (81; 82) is provided, preferably within the first transfer channel (49) or at an inlet or outlet opening of the

Wave channel (31, 32) is arranged.

14. Device according to one of claims 1 to 13, characterized in that the drive shaft (3) with a drive device (9) is coupled.

15. Rotor housing (1) and rotor (2) for a dynamic mixer according to one of claims 1 to 13.