Pump equipment

Abstract

To provide a pump device having improved characteristics related to cooling.SOLUTION: A pump device has at least one bearing reception part 12a configured to receive a drive shaft end bearing 22a. The bearing reception part 12a has at least one cooling channel 28a for receiving a cooling fluid. The pump device further includes a shell unit 30a having an outer wall, an outer shell 52a, and a shell cooling channel 42a. In an attached state, the shell cooling channel 42a is connected to the cooling channel 28a of the bearing reception part 12a and is formed by arranging the outer shell 52a on the outer wall.SELECTED DRAWING: Figure 2

Description

[Technical Field]

[0001] The present invention relates to a pump device according to the preamble of claim 1. Place Regarding. [Background technology]

[0002] Pumping devices are already known in which the motor is cooled by cooling channels running laterally in the shell of the pumping device. Pumping devices are also known which have a housing unit for the electrical components. Summary of the Invention [Problem to be solved by the invention]

[0003] The object of the present invention is to provide an apparatus of the general type which has improved properties, in particular with regard to cooling. This object is achieved according to the invention by the features of claim 1, while advantageous embodiments and further developments of the invention can be found in the dependent claims. [Means for solving the problem]

[0004] Advantages of the Invention The invention is based on a pumping device, in particular a submersible pumping device, having at least one bearing receptacle adapted to receive a drive shaft end bearing.

[0005] It is proposed that the bearing receptacle has at least one cooling channel for receiving at least one cooling fluid. In this way, improved cooling can be provided. In particular, the drive shaft end bearings can be cooled via the bearing receptacle.

[0006] The term "pumping device" should be understood to mean, in particular, at least a part of a pump, in particular a subassembly. In particular, the pumping device may include the entire pump. The term "pump," in particular a submersible pump, should be understood to mean, in particular, a device that provides movement of a preferably incompressible medium to be pumped in at least one operating state. Preferably, the pumping device has a shell unit that defines the pump externally and has a drive shaft driven by a motor unit of the pumping device and / or a screw unit that is configured to rotate by the drive shaft in at least one operating state. The rotation of the screw unit provides movement of the pumped medium. Alternatively, the pumping device may have a piston unit that is driven by the motor unit of the pumping device and configured to move the pumped medium by a movement process. The motor unit may in particular have a combustion engine. The motor unit particularly advantageously has an electric motor. In particular, in at least one operating state, the pump can be arranged outside and / or at least partially or completely inside the pumped medium.

[0007] "Cooling fluid" should be understood to mean, in particular, a liquid configured to absorb heat from at least one element and, in particular, to transfer that heat to at least one other element. The cooling fluid preferably has a high thermal conductivity and / or heat capacity. The cooling fluid particularly preferably has a viscosity that allows it to be pumped. It is conceivable that the cooling fluid may be the same as the pumped medium, but preferably the cooling fluid is different from the pumped fluid and is specifically configured to cool the pump. The cooling fluid may, for example, comprise water and / or oil.

[0008] The term "configured" should be particularly understood to mean particularly designed and / or equipped. A statement that an object is configured for a particular function means, in particular, that the object performs and / or executes said particular function in at least one state of use and / or operating condition.

[0009] The term "drive shaft end bearing" should be understood to mean a receiving part that receives at least one bearing unit of a pump device, particularly for mounting, in an installed state, at least a portion of the drive shaft of the pump device, in particular the end region of the drive shaft of the pump device, in particular for rotatable mounting. The term "bearing unit" should be understood to mean a unit that is configured to at least substantially accommodate the gravity of at least one object. The bearing unit may, in particular, have at least one rolling bearing and / or plain bearing. The drive shaft preferably has an elongated shape, and its longitudinal length is, in particular, at least 5 times, in particular at least 10 times, advantageously at least 20 times, particularly advantageously at least 30 times, and preferably at least 50 times, its length perpendicular to the longitudinal direction. Particularly preferably, at a first end of the drive shaft, the drive shaft is connected to the screw unit, in particular in a form-fitting manner. In particular, at a second end opposite the first end of the drive shaft, the drive shaft is connected to the bearing unit in a form-fitting manner. The motor unit is advantageously arranged in a sub-region of the drive shaft between the first and second ends. The "longitudinal direction" of an object is to be understood in particular to mean the direction extending parallel to the longest edge of the smallest rectangular parallelepiped that completely encloses the object.

[0010] It is further proposed that the bearing receptacle has a plate-like form. "Plate-like" is to be understood as meaning, in particular, the smallest imaginary rectangular parallelepiped that completely encloses the element, with a height corresponding to at most 50%, in particular at most 20%, advantageously at most 10%, and preferably at most 5% of the longest and / or shortest edges of the rectangular parallelepiped. It is conceivable that the bearing receptacle has an outer contour that is at least cylindrical, in particular cylindrical. Preferably, the outer contour of the bearing receptacle is in the form of a rectangular parallelepiped. For example, the bearing receptacle may be in the form of a wall. The bearing receptacle is advantageously in the form of a bearing cover. "Bearing cover" is to be understood as meaning, in particular, an element that, together with the wall of the pump device, forms an outer closure of the volume. The bearing cover can be connected to the wall in a press-fit, form-fit, and / or materially bonded manner. This can provide a simplified construction and optimization of installation space. In particular, the bearing receptacles can be easily stacked during transportation and / or storage. Advantageously, at least one subregion of the bearing receptacle in the installed state can be in the form of a mounting surface and / or a receiving surface.

[0011] It is proposed that the bearing receptacle has at least one cooling channel for receiving at least one cooling fluid. In particular, the structural unit may be part of the pump device and may have at least one line, in particular at least one cable and / or at least one flow path formed separately from the cooling channel, or in the form of a line, in particular a flow path formed separately from the cooling channel. The passage opening, in particular, has a diameter of at most ¼, preferably at most ⅙, and particularly preferably at most ⅛ of the diameter of the bearing receptacle. The "diameter" of an object should be understood to mean, in particular, the diameter of the smallest imaginary cylinder that directly surrounds the object. In particular, the bearing receptacle may have multiple, mutually different passage openings, in particular, that may be configured to receive different structural units, in particular different types of lines. The lines are advantageously in the form of electrical wires. In this way, flexibility can be improved. In particular, the arrangement of the components of the pump device can be implemented in a more flexible manner. For example, at least one first component can be arranged above and / or below the bearing receptacle. The first component can advantageously have a structural unit which passes through the passage opening and connects the first component to at least one further component located on the opposite side of the bearing receptacle.

[0012] In a further embodiment, it is proposed that the bearing receptacle is at least partially manufactured by casting. Furthermore, the bearing receptacle can be manufactured completely by casting. Preferably, the components of the bearing receptacle are manufactured by casting and connected to each other during installation. A person skilled in the art can distinguish a bearing receptacle manufactured by casting from a bearing receptacle manufactured by other processes, in particular forging and / or machining, by methods known to those skilled in the art. For example, a product manufactured by casting includes at least one cast metal, in particular, configured for use in casting. In this way, simplified production can be provided. In particular, the bearing receptacle can be manufactured with fewer work steps. Furthermore, a bearing receptacle manufactured by casting includes at least one cast metal. Alternatively, the bearing receptacle can be manufactured by stamping. In this way, efficiency can be improved, in particular the production speed of bearing receptacles can be increased.

[0013] It is further proposed that at least one cooling channel of the bearing receptacle be formed by a drilled cooling channel. It is particularly conceivable that the cooling channel be formed by a ground cooling channel. In particular, the cooling channel is implemented so as to be continuous throughout the entire bearing receptacle. In a further embodiment, multiple cooling channels can open into a common opening, for example, arranged around the center point of the bearing receptacle. For the production of drilled cooling channels, drilled holes are formed by machining, particularly in unprocessed areas, with a drilling device, which are then processed in the manufacturing process to form the bearing receptacle. Here, drilled cooling channels form drilled holes. Cooling channels formed by drilled holes can be distinguished from cooling channels formed by other processes, particularly forging and / or casting, by methods known to those skilled in the art. In particular, the cooling channel has an at least substantially cylindrical shape. Furthermore, drilling can be performed by grooves and / or channels and / or plastic deformation in the surface of the drilled holes. In this way, a simple design can be achieved. In particular, it is advantageously possible to provide multiple outlets and / or supplies for the cooling fluid in the cooling circuit. In particular, the diameter of the cooling channels can be precisely formed by the choice of drill head.Furthermore, the same blank can be used for different embodiments of the bearing receptacle, which allows for increased flexibility.

[0014] In a further embodiment of the present invention, it is proposed that the bearing receptacle has at least two plate-shaped elements that, in the mounted state, form at least one cooling channel. In particular, the plate-shaped elements may be secured to one another by welding and / or gluing and / or at least one detent connection. In the mounted state, the plate-shaped elements are particularly advantageously secured to one another by a screw connection. In particular, each plate element may have at least one notch that forms at least one common cooling channel. Preferably, only one plate element has a notch. This allows for simplified manufacturing, installation, and / or removal. In particular, the bearing receptacle can be partially installed and removed during installation and removal, thereby reducing the weight and volume of parts to be handled during installation and removal. The notch is preferably formed as a groove that opens toward the outside of the bearing receptacle at both its start and end. The expression "opening toward the outside of the object" of a cutout, recess, groove, notch, or hole in an object is advantageously understood to mean that the cutout, recess, groove, notch, or hole forms an empty space. One end of the cutout, recess, groove, notch, or hole forms direct or indirect contact with the medium surrounding the object. "Indirect contact" is preferably understood to mean that the empty space is adjacent to another empty space and forms direct contact with the medium surrounding the object. Preferably, a first opening serves for the supply of cooling fluid, and a second opening serves for the discharge of cooling fluid. For example, the groove may pass through the bearing receptacle in a straight line. In another embodiment, the groove may be curved. In a further embodiment, the grooves may open into a common opening. In this way, improved cooling can be provided. In particular, the flow of cooling fluid can be improved. Furthermore, a simple design can be achieved. In particular, it is advantageously possible to provide multiple discharges and / or supplies for cooling fluid in the cooling circuit.

[0015] In a further embodiment, it is proposed that the pump device has at least one receiving area for at least one functional unit, the receiving area being at least partially delimited by a bearing receptacle and cooled via the bearing receptacle in at least one operating state. The term "receiving area" should be understood to mean, in particular, a spatial area located on the side of the bearing receptacle opposite the drive shaft end bearing and configured to receive and mount at least one functional unit. For example, the receiving area for mounting the functional unit may have a welded seam, an adhesive layer, a threaded opening, a detent tongue, or a plug connector. The functional unit may, in particular, be part of the pump device. The term "functional unit" should be understood to mean, in particular, a unit configured to provide at least one function in at least one operating state. For example, the functional unit may include a measuring unit, a drive unit, and / or a transmitting unit. The functional unit preferably includes electrical components that are cooled via the bearing receptacle. The functional unit particularly preferably includes at least one electronic control unit. It is also conceivable that the functional unit includes another drive shaft end bearing of another drive shaft. In this way, improved cooling and optimised installation space can be achieved, in particular the bearing receptacle can provide cooling for the functional unit in addition to cooling for the drive shaft end bearings.

[0016] Furthermore, it is proposed that the pump device has a shell unit, which may be in the form of a cooling unit, in particular including at least one cooling channel. The cooling channel may in particular be implemented as a groove. In the mounted state, the opening advantageously forms a common connection with the cooling channel of the bearing receptacle. Furthermore, the opening may allow for the supply or discharge of a cooling fluid. Preferably, the groove of the bearing receptacle forms a cooling circuit with a corresponding groove in the shell unit. Alternatively, the cooling circuit may consist of several pairs of corresponding grooves. In this way, cooling is improved and the construction is simplified. In particular, the entire drive circuit can be cooled via the cooling circuit.

[0017] Furthermore, it is proposed that the pumping device have an explosion-proof unit that provides at least one explosion-proof function. In particular, the explosion-proof unit may be implemented at least partially integrally with the bearing receptacle and / or the drive shaft end bearing and / or the receiving area and / or the shell unit. "At least partially integrally" in this context should be understood to mean, in particular, that at least one element of the first unit is also part of the second unit. "Explosion-proof function" is understood to mean a function of compatibility, especially with regard to design, that complies with explosion-proof guidelines for common types of equipment and prevents damage to the immediate vicinity in the event of an explosion within the pumping device. This may be provided, for example, by a reinforced shell unit and / or by a pressure compensation unit of the pumping device. "Pressure compensation unit" should be understood to mean, in particular, a unit located at the boundary between two areas that provides pressure compensation for the second area in the event of an increase in pressure in the first area. The pressure compensation unit may be embodied, in particular, as a valve. In this way, the level of safety of the pumping device can be increased.

[0018] Further advantages will become apparent from the following description of the drawings. Exemplary embodiments of the invention are shown in the drawings. The drawings, description, and claims include a number of features in combination. Also, those skilled in the art will conveniently consider the features individually and combine them into appropriate further combinations. [Brief explanation of the drawings]

[0019] [Figure 1] FIG. 1 is a highly simplified schematic partial cross-sectional view of a pump with a pumping device. [Figure 2] FIG. 2 is a schematic partial cross-sectional view showing a part of a pump device having a bearing receiving portion. [Figure 3] FIG. 3 is a schematic diagram showing a portion of the bearing receiving portion. [Figure 4]FIG. 4 is a schematic view showing a portion of another bearing receiving portion. [Figure 5] FIG. 5 is a schematic view showing a portion of another bearing receiving portion. [Figure 6] FIG. 6 is a schematic view showing a portion of another bearing receiving portion. [Figure 7] FIG. 7 is a schematic diagram showing another bearing receiving portion. [Figure 8] FIG. 8 is a schematic diagram showing another bearing receiving portion. [Figure 9] FIG. 9 is a schematic view showing a portion of another bearing receiving portion. [Figure 10] 10 is a schematic view of a portion of the alternative bearing receiving portion of FIG. 9; DETAILED DESCRIPTION OF THE INVENTION

[0020] 1 shows a pump 10a in a highly simplified schematic, partial cross-sectional view. The pump 10a is in the form of a submersible pump 10a, which can operate both partially submerged in the medium to be pumped and above the medium to be pumped. For this purpose, the pump 10a has a special cooling system, which ensures sufficient cooling of the pump components even when not submerged. The pump 10a can be, for example, in the form of a centrifugal pump.

[0021] The pump 10a includes a pumping device. The pumping device includes a shell unit 30a. The shell unit 30a defines the exterior of the pump 10a. The shell unit 30a may be manufactured at least in part from high-grade steel. The shell unit 30a defines the outer wall of the pump 10a. The shell unit 30a includes an outer shell 52a. The shell unit 30a includes shell cooling channels 42a configured to receive and / or conduct a cooling fluid. The shell cooling channels 42a of the shell unit 30a provide cooling for the interior space of the pump 10a. The shell cooling channels 42a are formed by disposing the outer shell 52a on the outer wall. For example, the outer shell 52a may be secured to the outer wall by a press fit.

[0022] The pump device comprises a motor unit 32a. The motor unit 32a comprises an electric motor. Alternatively, however, the motor unit 32a may comprise a combustion engine. The motor unit 32a provides rotational motion for a drive shaft 34a of the pump device. The drive shaft 34a is operatively connected to the motor unit 32a. The drive shaft 34a is configured to transmit the rotational motion to an actuation unit 44a of the pump device (shown only in a schematic and simplified form).

[0023] The actuating unit 44a is operatively connected to the drive shaft 34a. The actuating unit 44a has a screw unit configured to move in the direction of the pumped medium by a rotational movement. The direction is defined by the shape of the screw unit. For example, the screw unit may have a helical shape. The pumped medium is guided to the screw unit via a supply 38a in at least one operating state. The supply 38a may be in the form of, for example, a pipe opening. The screw unit moves the discharged medium in the direction of a discharge 40a. The discharge 40a is configured to guide the pumped medium out of the pump 10a. The discharge 40a may be in the form of, for example, another pipe opening.

[0024] The actuation unit 44a includes a cooling unit. The cooling unit includes a cooling screw unit. The cooling screw unit is configured to move in the direction of at least one cooling fluid being pumped. The cooling screw unit moves the cooling fluid in the direction of the shell cooling channel 42a. The cooling fluid may include, for example, water and / or oil, and in other embodiments, the cooling fluid may include water and / or alcohol.

[0025] The pump device has a bearing receptacle 12a. The bearing receptacle 12a has a cooling channel 28a for receiving a cooling fluid. The bearing receptacle 12a is configured to receive a drive shaft end bearing 22a of the pump device. The drive shaft end bearing 22a is configured to rotatably mount the drive shaft 34a at an end of the drive shaft 34a opposite the actuation unit 44a. In particular, the cooling channel 28a of the bearing receptacle 12a provides cooling for the drive shaft end bearing 22a and / or the motor unit 32a. In the mounted state, the shell cooling channel 42a of the shell unit 30a is fluidly connected to the cooling channel 28a of the bearing receptacle 12a. In particular, the shell cooling channel 42a of the shell unit 30a, together with the cooling channel 28a of the bearing receptacle 12a, can be at least part of a common cooling circuit. The bearing receptacle 12a has the form of a plate, in particular a bearing cover.

[0026] An enlarged view of the shell cooling channels 42a and the cooling channels 28a is shown in FIG. 2. FIG. 2 shows part of the pump device in a cross-section along line II-II in FIG. 3. FIG. 3 shows part of the bearing receptacle 12a in a perspective view. The shell cooling channels 42a open, in each case at their start and end, towards the outside of the shell unit 30a. The cooling channels 28a of the bearing receptacle 12a are in the form of grooves. The cooling channels 28a open, in each case at their start and end, towards the outside of the bearing receptacle 12a.

[0027] In the mounted state, the openings of the cooling channel 28a and the shell cooling channel 42a form a common connection. The common connection can, in particular, at least partially form a common cooling circuit. For example, a common opening can supply cooling fluid from the shell unit 30a to the bearing receptacle 12a, while another common opening can drain cooling fluid from the bearing receptacle 12a to the shell unit 30a. In another implementation, any number of corresponding cooling channels 28a and shell cooling channels 42a can at least partially form, in particular, at least partially branched cooling circuits, and in particular, the pump device can have any number of supply and / or discharge paths for the cooling fluid. The bearing receptacle 12a has threaded holes 36a. The threaded holes 36a are configured to receive screws. The screws serve to secure the bearing receptacle 12a. The threaded holes 36a can each have a thread.

[0028] 3 shows the plate element 26a of the bearing receptacle 12a. The bearing receptacle 12a has two plate elements 26a, 27a. The plate elements 26a, 27a are screwed together, in particular using threaded holes 36a. Alternatively, the plate elements 26a, 27a can be fastened to one another by means of a snap lock or a twist lock.

[0029] Because the plate elements 26a and 27a are identical, only the plate element 26a will be described below. Each plate element 26a has a groove 48a configured to receive a sealing ring. Each plate element 26a has a notch 14a. The notches 14a are formed as four semi-ring-shaped grooves. The grooves are arranged at 90-degree angles to each other. In other implementations, any number of grooves corresponding to any portion of the ring can be arranged at any position. When the two plate elements 26a are attached, the notches 14a form a common cooling channel 28a. The cooling channel 28a is configured to receive a cooling fluid. The flow direction of the cooling fluid in the cooling channel 28a is represented by an arrow. Alternatively, the flow direction of the cooling fluid in the single or multiple cooling channels can be reversed. The supply and discharge of the cooling fluid are radial to the rotational axis of the drive shaft 34a. In another embodiment, only the first plate element 26a can have the notch 14a. The second plate-shaped element 26a may have, for example, a smooth surface. The bearing receptacle 12a, in particular the plate-shaped elements 26a, 27a, are produced by casting.

[0030] The pumping device has a receiving area 18a. The receiving area 18a is provided for receiving a functional unit 20a of the pumping device. Cooling channels 28a in the bearing receiving portion 12a provide cooling for the receiving area 18a and / or the functional unit 20a. The functional unit 20a may be, for example, in the form of an electronic control unit of the pumping device.

[0031] The pump device further includes an explosion-proof unit 24a. The explosion-proof unit 24a is disposed in the bearing receptacle 12a. The explosion-proof unit 24a is configured to provide explosion-proof functionality in the area of ​​the bearing receptacle 12a that complies with explosion-proof guidelines for common types of equipment. For example, the explosion-proof unit 24a may include a sealing unit that increases the compressive strength of the bearing receptacle 12a. The sealing unit may also be disposed in the groove 48a.

[0032] Figures 4 through 10 illustrate six further exemplary embodiments of the present invention. The following description and drawings are substantially limited to the differences between the exemplary embodiments, and for elements designated as identical, particularly elements having the same reference numerals, reference is generally made to the drawings and / or the description of the other exemplary embodiments, particularly Figures 1 through 3. To distinguish between the exemplary embodiments, the letter a has been added as a suffix to the reference numerals of the exemplary embodiments of Figures 1 through 3. In the exemplary embodiments of Figures 4 through 10, the letter a has been replaced by the letters b through g. Individual or all arrows shown in Figures 4 through 10 to indicate flow direction may also be reversed in alternative implementations.

[0033] 4 to 6 show in each case plate-shaped elements 26b-26d of one bearing receptacle 12b-12d, which have different embodiments of the cutouts 14b-14d.

[0034] FIG. 4 shows a plate-shaped element 26b of the bearing receptacle 12b, which has four recesses 14b formed as grooves. Each recess has two straight sections and one curved section, the latter connecting the two straight sections. The recesses are arranged at 90-degree angles to each other. In alternative implementations, any number of recesses can be provided with any curvature of the curved sections, any arrangement, and / or any length of the straight sections. In this way, better cooling of sub-regions of the bearing receptacle 12b can be achieved. The sub-regions are implemented as regions near the center of the bearing receptacle 12b.

[0035] 5 shows a plate-like element 26c of a bearing receptacle 12c with cutouts 14c formed as four differently curved grooves. The cutouts 14c are spaced apart and run through the entire bearing receptacle 12c. Alternative embodiments may have any number of grooves spaced apart from one another and with any curvature.

[0036] FIG. 6 shows a plate-like element 26d of a bearing receptacle 12d having cutouts 14d in the form of four trapezoidal grooves. Each groove terminates in a central circular groove. Additionally, linear grooves extend away from the circular grooves. In this embodiment, the linear grooves function as a cooling fluid supply. The trapezoidal grooves function as a cooling fluid outlet. In another embodiment, the linear grooves may function as a cooling fluid outlet and the trapezoidal grooves may function as a cooling fluid supply. In another embodiment, any number of trapezoidal and / or linear grooves may be provided in any arrangement.

[0037] FIG. 7 shows a bearing receptacle 12e made of a single plate-shaped element 26e and having perforated cooling channels 28e. The plate-shaped element 26e is first manufactured by casting. The cooling channels 28e are then formed by drilling holes in the plate-shaped element 26e. In this embodiment, the perforated cooling channels 28e are provided as five holes that intersect at the center of the bearing receptacle 12e. As in FIG. 4, one hole serves as a cooling fluid supply, and the remaining holes serve as a cooling fluid discharge. Alternatively, the bearing receptacle 12e may have a series of continuous holes. In further embodiments, the number and arrangement of the holes may be varied.

[0038] FIG. 8 shows a bearing receptacle 12f having a notch 14f implemented in a manner similar to the notch 14b in FIG. 4. The bearing receptacle 12f has two passage openings 16f. The passage openings 16f have different opening sizes. In the installed state, the passage openings 16f can receive an object. One of the passage openings 16f receives a structural unit 46f. The structural unit 46f is in the form of an electrical wire. The passage openings 16f open on both the side facing the drive shaft end bearing 22a and the opposite side. In alternative embodiments, the passage openings 16f may be of the same size and / or may be any number. The pump device's explosion-proof unit (not shown) has a separate sealing unit. The separate sealing unit is disposed within the passage opening 16f. The object received by the passage opening 16f is secured by the sealing unit within the passage opening 16f.

[0039] 9 and 10 show a bearing receptacle 12g. The bearing receptacle 12a has two plate-shaped elements 26a, 27a. The plate-shaped element 26g has a cutout 14g implemented in a manner similar to the cutout 14c of FIG. 5. The plate-shaped element 26g has a passage opening 16g. The plate-shaped element 26g has an axial supply channel 54g, which supplies cooling fluid axially relative to the rotation axis of the drive shaft (not shown). The plate-shaped element 26g has an axial discharge channel 56g, which supplies cooling fluid axially relative to the rotation axis of the drive shaft. The bearing receptacle 12g has a plate-shaped element 27g, which is formed differently from the plate-shaped element 26g. The plate-shaped element 27g has a smooth surface. The plate-shaped element 27g is in the form of a bearing cover. The plate-shaped element likewise has a passage opening 16g. The plate-like elements 26g, 27g form a common U-shaped cooling channel (not shown). [Explanation of symbols]

[0040] 10...Pump 12...Bearing receiving portion 14...Notch 16...Aisle opening 18...Receptive area 20...Functional Unit 22...Drive shaft end bearing 24...Explosion-proof unit 26... Plate element 27... Plate element 28...Cooling channel 30...Shell unit 32...Motor unit 34...Drive shaft 36...Screw hole 38…Supply route 40...Discharge path 42…Shell cooling channel 44...Operating unit 46...Structural unit 48...Groove 52...Outer shell 54...Axial supply path 56…Axial discharge route

Claims

1. A pumping device having at least one bearing receiving portion (12a-12f) configured to receive a drive shaft end bearing (22a), said bearing receiving portion (12a-12f) having at least two or more cooling channels (28a-28f) for receiving at least one cooling fluid; 1. A pump device comprising: a shell unit (30a) having an outer wall, an outer shell (52a), and a shell cooling channel (42a), wherein, in an installed state, the shell cooling channel (42a) is connected to the cooling channel (28a-28f) of the bearing receiving portion (12a-12f) and is formed by placing the outer shell (52a) on the outer wall.

2. 2. A pump device according to claim 1, characterized in that the bearing receiving portions (12a-12f) are in the form of plates.

3. 3. Pump device according to claim 1 or 2, characterized in that the bearing receptacle has at least one passage opening (16f) which is implemented as a passage for at least one structural unit (46f).

4. Pump device according to any one of claims 1 to 3, characterized in that the bearing receptacles (12a-12f) are at least partly produced by casting.

5. 5. The pump device according to any one of claims 1 to 4, characterized in that the at least two cooling channels (28e) of the bearing receiving part (12e) are implemented by drilled cooling channels (28e).

6. 5. The pump device according to claim 1, wherein the bearing receiving portion (12a-12d, 12f) has at least two plate-shaped elements (26a-26d, 27a-27d, 27f) which, when mounted, form the at least two cooling channels (26a-26d, 28f).

7. 7. A pump device according to claim 1, comprising at least one receiving area (18a) for at least one functional unit (20a), said receiving area (18a) being at least partially delimited by said bearing receiving portions (12a-12f) and being cooled via at least one of said bearing receiving portions (12a-12f) in operation.

8. 8. Pumping device according to any one of claims 1 to 7, characterized in that it comprises an explosion-proof unit providing at least one explosion-proof function.

9. 9. Pump device according to claim 1, characterized in that the shell cooling channels (42a) are in each case open at their start and end towards the outside of the shell unit (30a).

10. A pump (10a) comprising at least one pumping device according to any one of claims 1 to 9.

11. The pump device described in claim 1, wherein the pump device is an underwater pump device.

12. A pump (10a) as described in claim 10, wherein the pump (10a) is an underwater pump.

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