JP3188469U - Medium pressure pump - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a medium pumping pump which is more easily configured, has high efficiency, and guarantees a layered flow characteristic in a pump. SOLUTION: A pump for pumping a liquid medium, a viscous medium or a solid medium has a synchronous motor 2 provided with a permanent magnet type rotor 3 and a stator 4, and two pipe flanges 9 and 10, and the rotor 3 Is separated from the stator 4 by at least one bearing 5, the rotor 3 has at least one impeller 8, and the synchronous motor 2 is dissociably disposed between the pipe flanges 9, 10. There is. [Selection diagram] Fig. 2

Description

  The present invention relates to a medium pump. In particular, the present invention relates to a medium pressure feeding pump having a synchronous motor including a permanent magnet type rotor and a stator.

  A number of pumps with synchronous motors are known from the prior art. Many of these devices are often complex and do not have optimal efficiency.

  Accordingly, it is an object of the present invention to provide a pump that is simpler to construct, has high efficiency, and guarantees laminar flow characteristics within the pump.

  This problem is solved by a pump having the features of claim 1. That is, it has a permanent magnet type rotor and a synchronous motor having a stator, and two pipe flanges, the rotor is separated from the stator by at least one bearing, and the rotor is at least one impeller. The synchronous motor is solved by a pump for liquid medium, viscous medium or solid medium pumping, characterized in that the synchronous motor is detachably disposed between the pipe flanges.

  The stator means a stationary component member of the apparatus.

  The corresponding member of the stator is called a rotor, and the rotor forms a movable rotating member of the apparatus.

  The synchronous motor substantially consists of one stator and one rotor.

  A synchronous motor is a synchronous machine that operates as a motor, in which a paramagnetic rotor, i.e., a rotor, is synchronously driven by a rotating magnetic field that moves within an enclosing stator. The rotating synchronous motor has a synchronous movement with respect to the AC voltage.

  The magnetic field in the rotor is formed by a permanent magnet, preferably a ferrite cylinder magnetized as a rotor. The stator coil is operated with a suitable controlled alternating current, preferably by a frequency converter, especially in the case of large synchronous machines. Thereby, it is possible to realize a driving device with a large output and variable rotation speed.

  The stator rotating magnetic field immediately rotates at the synchronous rotation speed when connected. However, the rotor takes some time to accelerate based on its moment of inertia. Thus, the synchronous motor requires a starting aid, preferably a starting cage. When the rotor reaches a substantially synchronous rotational speed, the exciting current of the rotor winding is connected, and thereby the rotor is attracted to the rotating stator magnetic field.

  The impeller is a movable rotating member of the pump. Preferably, the impeller is a constituent member of the rotor.

  The impeller consists of coronal (guide) vanes, vanes or rotor blades which are preferably held on the rotor via suitable fixing means.

  The impeller is preferably coupled to the rotor in a material connection. Suitable in this case is an integral production or a welded connection between the impeller and the rotor. Particular preference is given to shape-connective bonds which may be dissociable.

  Preferably, the impeller is made of non-ferrous metal, metal or plastic.

  The use of a flange is a means of joining the pipe parts intimately but releasably. What is important for the tightness is the pressure of the annular sealing surface against the seal located in the middle. This crimping pressure is preferably achieved by screw fastening means inserted through holes provided in the flange plate of the flange.

  The bearing is a mechanical component for guiding a relatively moving component. The bearing allows movement with a desired degree of freedom and prevents movement with an undesired degree of freedom.

  In an advantageous refinement of the invention, the bearing is a sliding bearing, a rolling bearing or a ball bearing.

  As a result, the friction output and the loss output and wear can be minimized. Radial bearings are preferred, and radial axial bearings (radiax bearings) are particularly preferred. Particular preference is given to using even more efficient hydrostatic sliding bearings.

  In a further advantageous refinement of the invention, the bearing is arranged between the stator and the rotor. In this case, the bearings are arranged around the outer surface of the rotor and on the inner surface of the stator. The bearing, the rotor, and the stator preferably have a hollow cylindrical shape.

  Preferably, the bearings are arranged radially and / or axially between the stator and the rotor, so that an optimum bearing without deviation between the stator and the rotor in the synchronous motor is ensured.

  By providing the bearing between the stator rotor, the synchronous motor can achieve a uniform rotational motion with almost no loss at high efficiency.

  In a further advantageous refinement of the invention, at least one bearing support is additionally provided.

  This provides a means for supporting the rotor within the pump. The bearing support is preferably configured with receiving means, preferably an opening, for receiving the shaft, in which case the opening extends longitudinally in the center of the pump.

  In a further advantageous refinement of the invention, the bearing support has a shaft.

  The shaft, in its simplest form, is a rod-like mechanical element that is used for rotational movement and torque transmission. Unlike the axis, the shaft transmits torque and is torsionally loaded.

  The bearing support is configured to receive the shaft.

  In yet another advantageous refinement of the invention, the shaft is used to guide the impeller.

  This ensures that the impeller and thus the rotor can be accurately guided at the center of the pump.

  Preferably, the impeller coupled to the rotor is also fixedly coupled to the shaft.

  In this case, a material-connected connection (integral or welded) or a shape-connected connection (joint or fir tree joint) is preferably selected. This creates a frictional connection that transmits torque to the shaft and compensates for significant centrifugal forces in large high speed rotating machines.

  In a further advantageous refinement of the invention, at least one bearing is arranged between the bearing support and the shaft.

  This minimizes frictional output, loss output and wear in the bearing. The shaft can perform its rotational movement without being blocked.

  In a further advantageous refinement of the invention, a bearing support is coupled to the stator.

  As a result, the bearing support can be easily mounted in a stationary manner in the stator or in the pump. This position fixing is preferably effected by welding or composite casting.

  Particularly preferably, the bearing support has at least one fixed connection with the stator. That is, the bearing support can be coupled to the stator using, for example, a support column.

  In order to increase the rigidity of the connection, particularly preferably two, three, four or more fixed connections with the stator are provided.

  In yet another advantageous refinement of the invention, the medium is a liquid medium, a viscous medium or a solid medium.

  Thereby, solids such as gravel and crushed stone can be pumped in addition to the liquid medium and the viscous medium.

  In yet another advantageous refinement of the invention, the pump can be integrated into the pipe system.

  Attaching pipe flanges on both sides of the synchronous motor provides a means to easily attach or incorporate the pump into any existing pipe system.

1 is a perspective view of a pump according to the present invention. FIG. 2 is a longitudinal sectional view of the pump according to the present invention shown in FIG. 1. FIG. 2 is a longitudinal sectional view of an alternative embodiment of the pump shown in FIG. 1. FIG. 4 is a detailed view of a range indicated by a symbol A in FIG. 3.

  In the following, embodiments for carrying out the present invention will be described in detail with reference to the drawings.

  FIG. 1 shows a perspective view of a pump 1 according to the present invention. The pump 1 is basically divided into three partial regions: a synchronous motor 2 having a casing, and pipe flanges 9 and 10 connected to the left and right of the synchronous motor 2.

  FIG. 2 shows the individual components of the pump according to the invention in a longitudinal section. With respect to FIG. 2, the individual components are first described separately, and the cooperation of these components is described in detail.

  The pump shown in FIG. 2 has the following constituent members: a synchronous motor 2 composed of a rotor 3 and a stator 4, a sliding bearing 5, an impeller 8, and two pipe flanges 9 and 10.

  The rotor 3 of the synchronous motor 2 surrounds the impeller 8. The impeller 8 consists of coronal blades / wings which are held on the rotor 3 via suitable fixing means. In this embodiment, the impeller 8 is fixedly connected to the rotor 3 by welding connection, or is fixedly connected to the rotor 3 in a shape connection (shape constraint, for example, connection by engagement) or friction connection. Has been.

  The (rotationally symmetric) rotor 3 is arranged with respect to the stator 4 so that both components of the synchronous motor 2 do not overlap, that is, do not directly contact and extend so as not to cause body contact. . In order to guarantee this non-contact state, two sliding bearings 5 are provided. In this case, these sliding bearings 5 are arranged around the two outer partial regions of the outer peripheral surface of the rotor 3 in a hollow cylindrical shape when viewed in the radial direction.

  Furthermore, since the sliding bearing 5 is located in two regions facing the inside of the stator 4, direct contact of the rotor 3 with the stator 4 is eliminated.

  The synchronous motor 2 is detachably mounted between the two pipe flanges 9 and 10 by screw fastening (not shown).

  In the pump 1 according to the present invention, when the permanent magnet type rotor 3 continuously rotates, the liquid medium, the viscous medium and the solid medium can be effectively and continuously pumped. In this case, in addition to the uniform rotation of the impeller, it is desirable to prevent turbulent flow of the pumped medium.

  FIG. 3 shows in longitudinal section the individual components of an alternative embodiment of the pump according to the invention shown in FIG. With reference to FIG. 3, the individual components are first described separately, and the cooperation of these components is described in detail.

  The pump shown in FIG. 3 includes the following components: a synchronous motor 2 composed of a rotor 3 and a stator 4, a sliding bearing 5, a bearing support 6, a shaft 7, an impeller 8, and two pipe flanges 9 and 10. have.

  The rotor 3 of the synchronous motor 2 surrounds the impeller 8. The impeller 8 consists of coronal blades / wings which are held on the rotor 3 via suitable fixing means. In this embodiment, the impeller 8 is connected to the rotor 3 by welding connection, or is connected to the rotor 3 in a shape connection or a friction connection.

  The rotor 3 is arranged with respect to the stator 4 so that both components of the synchronous motor 2 do not overlap, that is, do not directly contact and extend to prevent body contact. In order to ensure this non-contact state, two sliding bearings 5, two bearing supports 6 and a shaft 7 are provided.

  The bearing support 6 extends in a cross shape in the radial direction on both sides of the impeller 8 in the pump 1. In this case, the bearing support 6 is fixedly coupled to the stator 4. The bearing support 6 is used for supporting the shaft 7. A sliding bearing 5 is provided between the bearing support 6 and the shaft 7 (FIG. 4). In this case, the sliding bearings 5 are arranged so as to surround the shaft 7 in partial regions at both ends of the shaft 7.

  The synchronous motor 2 is detachably mounted between the two pipe flanges 9 and 10 by screw fastening (not shown).

  In the pump 1 according to the present invention, when the permanent magnet type rotor 3 continuously rotates, the liquid medium, the viscous medium and the solid medium can be effectively and continuously pumped. In order to prevent turbulence in the pump 1, caps / domes are preferably fitted over the ends of the shaft 7 (not shown). In this case, the cap has a hemispherical or bell-like geometry that matches the flow characteristics within the pump.

  The pump according to the present invention provides a compact unit, which is further superior in simple technical configuration and small number of components, has high efficiency, and is almost layered. Guarantees the flow characteristics.

  DESCRIPTION OF SYMBOLS 1 Pump, 2 Synchronous motor, 3 Rotor, 4 Stator, 5 Sliding bearing, 6 Bearing support body, 7 axis | shaft, 8 Impeller, 9, 10 Pipe flange

Claims (10)

A synchronous motor (2) having a permanent magnet rotor (3) and a stator (4), and two pipe flanges (9, 10);
The rotor (3) is separated from the stator (4) by at least one bearing (5);
The rotor (3) has at least one impeller (8);
The pump (1) for feeding a liquid medium, a viscous medium or a solid medium, wherein the synchronous motor (2) is detachably disposed between the pipe flanges (9, 10).   The pump according to claim 1, wherein the bearing (5) is a sliding bearing, a rolling bearing or a ball bearing.   The pump according to claim 1 or 2, wherein the bearing (5) is arranged between the stator (4) and the rotor (3).   The pump according to claim 1 or 2, further comprising at least one bearing support (6).   The pump according to claim 4, wherein the bearing support (6) has a shaft (7).   6. Pump according to claim 5, wherein the shaft (7) is used to guide the impeller (8).   The pump according to any one of claims 4 to 6, wherein at least one bearing (5) is arranged between the bearing support (6) and the shaft (7).   The pump according to any one of claims 4 to 7, wherein the bearing support (6) is coupled to the stator (4).   9. The pump according to claim 8, wherein the bearing support (6) has at least one connection with the stator (5).   10. A pump according to any one of the preceding claims, wherein the pump (1) can be incorporated into a pipe system.

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