EP0814268B1 - Modular construction for manufacturing of a pump, particularly a pump driven by a permanent magnet coupling - Google Patents

Description

• einem Kernelement,
• einer Antriebseinheit mit einer Antriebswelle und
• mindestens einer zwischen dem Kernelement und der Antriebseinheit angeordneten Baugruppe.

The invention relates to a modular kit for producing a pump, in particular a permanent magnet coupling pump, consisting of

• a core element,
• a drive unit with a drive shaft and
• at least one assembly arranged between the core element and the drive unit.

Pumps, especially permanent magnet clutch pumps, exist essentially a core element, a drive unit, a driver connected to the drive unit and one Housing that is at least partially the core element, the driver and encloses the drive shaft and its storage.

The pump is usually driven by a standard one Standard engine. The required torque is based on the drivers equipped with permanent magnets via a permanent fat or oil-lubricated grooved ball bearings and transmitted an elastic coupling.

As a further component of the core element in addition to a suction and pressure chamber and an impeller stored in this is a So-called canister provided. It has the task of suction and To separate the pressure chamber from the atmosphere. Inside the containment can is the rotor that is also equipped with permanent magnets arranged. This is with medium-lubricated plain bearings stored and transmits the torque given by the driver on the impeller, just like the rotor on the pump shaft is arranged.

Depending on the application and operation, the pumps have different Bearings of the clutch shaft, different Types of lubrication and different sized housings in which the clutch shaft is supported. With the so-called block construction the driver is arranged directly on the motor shaft, so that the clutch shaft is omitted.

It turns out to be a disadvantage of a variety of different ones Housing shapes, which are preferably made of cast material and thus i.a. are difficult and unwieldy to manufacture and to stockpile. Due to the variety of different housing shapes the manufacturing costs of these housings are very high.

Another disadvantage of the mentioned design of pumps is that the whole for control and repair purposes Housing must be removed from the pump, taking it previously required, the drive unit from the housing too separate. This also leads to checks and repairs on the pump are very complex and therefore very expensive.

There is therefore the task of creating a pump whose Manufacturing, maintenance and repair is inexpensive and their Retrofitting or upgrading for the respective need is easy is accomplished.

The solution principle of the task is a modular one To create kit for producing such pumps, and ever depending on the application and operating mode of the pump, the desired pump assemble from a series of "standardized" components to be able to. The goal is to be as little different as possible Use components for the different types of pumps.

• eine Antriebseinheit mit einer Antriebswelle und
• mindestens eine zwischen dem Kernelement und der Antriebseinheit angeordnete Baugruppe umfaßt, wobei die Baugruppe wahlweise aus einem oder mehreren der nachfolgenden Bauelemente besteht:

a) eine Laterne die das Kernelement teilweise umfaßt,

aa) eine Laterne mit einer Heizung, wobei die Laterne das Kernelement teilweise umfaßt,

b) ein mit einem äußeren Magnetträger versehener Treiber, der für den Antrieb eines im Kernelement angeordneten Läufers mit einem inneren Magnetträger vorgesehen ist (Fig. 1),

bb) ein mit einem äußeren Magnetträger versehener Treiber mit einem stirnseitig angeordneten Flansch zur Aufnahme der Antriebswelle der Antriebseinheit, wobei der Treiber für den Antrieb eines im Kernelement angeordneten Läufers mit einem inneren Magnetträger vorgesehen ist (Fig. 2),

c) eine Kupplung mit einer Kupplungswelle und mit einem an einem Ende der Kupplungswelle angeordneten Flansch zur Herstellung einer Verbindung zwischen der Antriebseinheit und dem Treiber,

d) ein Laternenträger, an dem stirnseitig auf der zum Kernelement hinweisenden Seite eine Anschlußfläche für die Laterne vorgesehen ist,

e) eine Wärmesperre, die stirnseitig am Laternenträger auf der zum Kernelement hinweisenden Seite anzuordnen ist.

The object is specifically achieved in that a modular kit is provided for producing a pump, in particular a magnetic coupling pump
a core element

• a drive unit with a drive shaft and
• comprises at least one assembly arranged between the core element and the drive unit, the assembly optionally consisting of one or more of the following components:

a) a lantern that partially encompasses the core element,

aa) a lantern with a heater, the lantern partially comprising the core element,

b) a driver provided with an outer magnet carrier, which is provided for driving a rotor arranged in the core element with an inner magnet carrier (FIG. 1),

bb) a driver provided with an outer magnet carrier with a flange arranged on the end face for receiving the drive shaft of the drive unit, the driver being provided for driving a rotor arranged in the core element with an inner magnet carrier (FIG. 2),

c) a coupling with a coupling shaft and with a flange arranged at one end of the coupling shaft for establishing a connection between the drive unit and the driver,

d) a lantern carrier on which a connection surface for the lantern is provided on the end face on the side facing the core element,

e) a heat barrier, which is to be arranged on the face of the lantern carrier on the side facing the core element.

The main advantage of the invention is that due to the modular kit, depending on the Requirements for the pump to be manufactured a pump inexpensively and simply made from this standardized kit can be.

In particular, by dividing the housing into a lantern and it is a lantern carrier for repair and maintenance work possible, simple and in a short time in the housing lying parts, such as getting to the driver. The connections between optionally to be attached to each other Elements, be it on the housing side or on the Side of the inner elements involved in the pump drive through appropriately adapted connection surfaces and easy to install Easy to manufacture fasteners.

It also proves to be a significant advantage that between a heat barrier is inserted into the lantern and the lantern carrier can be. This thermal barrier has the advantage that it is due to the drive unit due to its larger surface facing outwards protects against that that arises in the core element Heat is transferred to the drive unit. This is it possible to set the operating temperature for the drive unit limit approx. 70 ° C.

The kit allows one and the same components both for a block version of a pump as well as for a normal pump to use. Under a block design of a pump is, as already mentioned, to understand that the drive unit directly coupled to the driver via the drive shaft is so that a clutch, as is normally the case with Pumping is known, consisting essentially of a clutch shaft and this shaft-bearing elements is not required becomes.

As an advantageous development, it is provided that the component "Lantern" has a heater that go to it is the part of the medium passed through the containment shell heat. Here a ring channel is provided inside the lantern, wherein the ring channel has a connection for performing a heating medium. The ring channel itself is included mounted lantern as close as possible to the can, so that the heat caused by the heating medium immediately the liquid medium carried in the containment shell is transferred.

The lantern is advantageously made from a cast material, the ring channel with the lantern being a one-piece Forms part.

To create a connection between the drive shaft of the drive unit and manufacture the core element together with the lantern, is a depending on the operating mode of the pump designed lantern carrier provided. A further education of the Lantern carrier provides that the coupling that is used to manufacture a connection between the drive shaft of the drive unit and the driver is necessary in the lantern carrier is mounted by means of deep groove ball bearings. Obtained for storage two options depending on the stress, namely either oil or grease lubrication. The lantern carrier for grease lubrication has a grease nipple on its circumference on, during operation as required Lubricant can be filled. The other embodiment (Oil lubrication) points next to a feed opening for the Lubricant on an oil sump from which continuously Lubricant is promoted.

The lantern carrier suitable for the block design has a connection surface on each end on one side to accommodate the lantern and on the opposite side another pad for receiving the drive unit on. Depending on the temperature of the material to be pumped Medium is provided, the lantern carrier in two sizes to be provided, namely in a normal version and in one shortened version. For the shortened version, that face on the pointing to the core element and with the lantern connectable side a thermal barrier, such as it has already been described above, is to be flanged.

As a further advantageous training it is provided that Component "magnet driver" essentially from a driver ring and a magnetic carrier designed as a driver yoke body with magnets. This means that the magnets are glued to a so-called inference body, wherein this inference body in turn in a recess in the driver ring is arranged. This has the advantage that the used Magnets including the driver yoke body simply removed from the driver ring, replaced and through new magnets can be replaced without this compared to the to align the inner magnetic carrier. Furthermore, these are Magnets arranged on the driver yoke body so that a Distance between the driver yoke body with the magnets and the front end of the driver ring is formed. This ensures that when removing or postponing the Driver rings from or onto the containment shell the magnets in front an unwanted impact and thus damage and / or Movement protected from the required position become.

For the normal version, the driver is designed so that the flange already pre-assembled on the coupling shaft can be connected to the magnet driver.

In the block version, the driver is designed so that the Flange for connection to the drive unit first on the driver and then on the drive shaft the drive unit is connected. Because the real one Coupling without replacement is eliminated by this version considerable manufacturing costs saved, especially since the components, but also other work steps such as alignment, Straightening etc. are eliminated.

Another significant advantage over the conventional one Execution of pumps is due to the driver its design requires no further storage and thus here, too, costs for the manufacture, repair and Maintenance can be saved.

It is important for the modular kit that one and the same Components used for different pump designs can be and thus on the one hand the manufacturing and Reduce storage costs as well as maintenance and repair such pumps can be significantly simplified. The core element which is a significant part of a complete pump, remains the same - at the respective performance level.

Fig. 1

einen modularen Bausatz für die Herstellung einer Pumpe in Normalausführung im Schnitt;

Fig. 2

einen modularen Bausatz für die Herstellung einer Pumpe in Blockausführung im Schnitt;

Fig. 3

eine vergrößerte Schnittdarstellung des Bauelements des Treibers;

Fig. 4

eine zusammengebaute Pumpe mit den Bauelementen gemäß Fig. 1;

Fig. 5

eine weitere Pumpe mit den Bauelementen gemäß Fig. 1;

Fig. 6

eine zusammengebaute Pumpe mit den Bauelementen gemäß Fig. 2;

Fig. 7

eine weitere Pumpe mit den Bauelementen gemäß Fig. 2.

Further advantages and details of the invention emerge from the following description of exemplary embodiments and with reference to the drawings; these show:

Fig. 1

a modular kit for the production of a pump in normal execution in section;

Fig. 2

a modular kit for the production of a pump in block design in section;

Fig. 3

an enlarged sectional view of the component of the driver;

Fig. 4

an assembled pump with the components of FIG. 1;

Fig. 5

another pump with the components of FIG. 1;

Fig. 6

an assembled pump with the components of FIG. 2;

Fig. 7

a further pump with the components according to FIG. 2.

Various exemplary embodiments of Pumps, which are shown assembled in FIGS. 4-7, described.

The first embodiment (Fig. 4 and Fig. 1, upper half) in terms of type, refers to a standard version a pump and is particularly suitable for outputs <15 kW suitable. For the manufacture of this pump it is necessary the clutch 18 with a clutch shaft 19 and with a flange 20 arranged at one end of the coupling shaft 19 to be pre-assembled. In addition, it is necessary that the bearings 31, consisting of deep groove ball bearings 32, 33 already on the Coupling shaft 19 are arranged. For greater running safety To ensure, the distance 34 of the two deep groove ball bearings 32, 33 to each other larger than the norm is prescribed.

After this pre-assembly, the flange 20 is on the coupling shaft 19 is pre-assembled with one with an outer Driver 13 provided with magnetic carrier 14 by means of screws 49 firmly connected. The unit 44 thus formed is then in the Lantern carrier 21, the device for grease lubrication 37th provides, inserted. Before these parts now with the core element 2 are connected, the lantern 10 pushed onto the core element 2 and with screws 42 with connected to the core element, so that the face-side pad 50 of the lantern 10 with the connection surface 41 of the core element 2 comes into contact and so a further unit 43 forms. For the final assembly of the pump, the first one is formed Unit 44 pushed onto the core element 2 so that the Magnet driver 13 is pushed directly over the can to the extent that the end face 22 of the Lantern carrier 21 with the pad 45 of the lantern 10 in Connection is coming. Then they are already in the lantern carrier 21 pre-screwed screws 47 in the holes provided the lantern 10 screwed.

The further embodiment (Fig. 5 and Fig. 1, lower Half) of the normal version differs from the exemplary embodiment 4 in that a heat barrier 23 on the coupling shaft 19 between flange 20 and deep groove ball bearing 32, 33 is arranged. The heat barrier 23 is after Pre-assembly of the coupling 18 and connection of the flange 20 with the outer magnet driver 13 directly with the front side to connect the lantern carrier 21. Here too there is Possibility of lubricating the bearing 31 for the clutch shaft to be provided as oil lubrication 38 or as grease lubrication 37. The lantern carrier 21 for the oil lubrication 38 draws is characterized by the fact that there is an opening into which the Lubricant can be filled and an oil sump is present to at least the emergency running properties for to ensure such a camp.

The other embodiments (Fig. 6, 7 and Fig. 2, upper and lower half) differ from the previous ones in that that they are designed as a block version. This is provided that the lantern carrier 21 directly to the drive unit 3 via the connection surface 36 on the lantern carrier 21 is flanged. Before that is the outer magnet driver 13 directly with the drive shaft 4 of the drive unit 3 to be connected via a flange 17 with screws 49 or 51. Then the one that has already been pushed onto the core element 2 and mounted lantern 10, 11 (the respective pads 41, 50 come together and the core element 2 and the lantern 10 form a unit 43) with the Lantern carrier 21 and with the drive unit 3 together form a unit 44 via freely accessible screws 47 connect. The main advantage of this block design is that it is very compact and none elastic coupling needed more.

In addition, the drive unit occurs in block design high temperatures (> 80 ° C) must be protected. This is provided that a lantern carrier designed in a shortened version 21 receives a heat barrier 23 on the end face prevents the high temperatures arising in the core element 2 are transferred to the drive unit 3.

In general, a kit has been created, the multiple Possibilities, pumps depending on the application needs to design from a few components and thus inexpensive manufacture, maintain and repair.

Claims (16)

1. Modular assembly kit (1) for the selective manufacture of a pump, in particular a permanent magnetic coupling pump, of block or normal design, with

   a core element (2),

   a drive unit (3) with a drive shaft (4) and

   at least one assembly (5) arranged between the core element (2) and the drive unit (3),

   wherein the assembly kit (1) for selective construction of the assembly (5) for normal design or block design of the pump has at least the following assembly kit elements:

   a) a cage (10) which partially encompasses the core element (2),

   b) a driver (13) which is provided with an outer magnet carrier (14) and which is provided for driving a rotor (15) with an inner magnet carrier (16) arranged in the core element (2),

   c) a flange (17) for receiving the drive shaft (4) of the drive unit (3), which is designed for releasable attachment to the end face of the driver (13),

   d) a coupling (18) with a coupling shaft (19) and with a flange (20) which is arranged at one end of the coupling shaft (19) and which is designed for releasable attachment to the end face of the driver (13), for making a connection between the drive unit (3) and the driver (13),

   e) a cage carrier (21) for block design of the pump, which is designed for making a releasable connection to the cage (10), and

   f) a further cage carrier (21) for normal design of the pump, which is designed for making a releasable connection to the cage.
2. Assembly kit according to claim 1, characterised in that a heating system (12) for the cage (11) consists of a ring channel (24) arranged inside the cage (11) , with a connection for passage of a heating medium.
3. Assembly kit according to claim 2, characterised in that the ring channel (24) and the cage (11) form a single part.
4. Assembly kit according to any of the preceding claims, characterised in that the cage (11) is made of a cast material.
5. Assembly kit according to any of the preceding claims, characterised in that the driver (13) essentially consists of a driver ring (25) and a magnet carrier designed as a driver return body (26) with magnets (27).
6. Assembly kit according to claim 5, characterised in that the driver return body (26) can be inserted in a recess (28) on the inside of the driver ring (25).
7. Assembly kit according to claim 5 or 6, characterised in that the driver return body (26) is arranged at a distance (29) from the end face (30) of the driver ring (25).
8. Assembly kit according to any of the preceding claims, characterised in that for mounting (31) the coupling shaft (19) there are provided two bearings (32, 33), the distance (34, 35) between which is greater than the distance prescribed by the standard.
9. Assembly kit according to any of the preceding claims, characterised in that the cage carrier (21) provides, on the side opposite the connecting face (22) for the cage (10), a connecting face (36) for the drive unit (3).
10. Assembly kit according to any of the preceding claims, characterised in that on the cage carrier (21) is provided a device for grease lubrication (37).
11. Assembly kit according to any of the preceding claims, characterised in that on the cage carrier (21) is provided a device for oil lubrication (38).
12. Assembly kit according to claim 1, characterised in that a heat barrier (23) consists of a housing whose outwardly facing surface area is increased.
13. Assembly kit according to claim 12, characterised in that radially arranged ribs are provided in the housing of the heat barrier (23) to increase the surface area.
14. Assembly kit according to claim 12, characterised in that a further seal (40) is provided in the housing of the heat barrier (23) in the region of the bore (39) for receiving the coupling shaft (19)/drive shaft (4) for sealing off the core element (2) from the drive unit (3).
15. Assembly kit according to any of the preceding claims, characterised in that the pump has the following components:

    the cage (10) which is attached to the core element (2) by means of bolts (42) on a connecting face (41) and so forms a first unit (43),

    the drive unit (3) whose drive shaft (4) is connected to the driver (13) and whose cage carrier (21) is connected by one connecting face (36) to the drive unit (3), these assembled elements forming a second unit (44),

    the pump being formed by the fact that the first unit (43) and the second unit (44) are connected to each other by connecting a further end connecting face (22) of the cage (10) to the connecting face (22) of the cage carrier (21) by bolts (47).
16. Assembly kit according to any of the preceding claims, characterised in that

    the drive unit is connected by the connecting face (22) to the heat barrier (23)

    which at its end connecting face (45) is connected by bolts (47) to the cage (10).

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