TWM484016U - Pump for conveying media - Google Patents

Description

Pump for conveying media

This creation relates to a pump for transporting media. The present invention relates in particular to a pump for conveying a medium comprising a synchronous motor having a permanent magnet rotor and a stator.

There are a variety of pumps including synchronous motors in the prior art. Most of these devices are cumbersome and do not have optimum efficiency.

In view of this, the purpose of this creation is to introduce a flow pump that is simpler in structure, more efficient, and capable of laminar flow in the pump.

The solution for achieving the above object is a pump having the features recited in claim 1 : a pump for conveying a liquid, semi-liquid or solid medium, comprising a synchronous motor having a permanent magnet rotor and a stator and two a tubular flange, wherein the rotor is separated from the stator by at least one bearing, the rotor having at least one impeller, the synchronous motor being removably disposed between the tubular flanges.

A stator is a fixed portion of a device.

The concept opposite the stator is the rotor, the movable part of the device.

The synchronous motor is mainly composed of a stator and a rotor.

The synchronous motor is a synchronous motor that operates in motor mode with its permanent magnetic rotor being synchronously driven by a moving rotating magnetic field surrounded by the stator. Synchronous motor running period There is a movement synchronized with the alternating voltage.

The magnetic field in the rotor is produced by a permanent magnet, preferably a cylindrical magnetized ferrite as a rotor. The stator coil of a large synchronous motor is preferably driven by a frequency converter with an adapted controllable alternating current. This enables high power variable speed drive.

When turned on, the stator rotating field is immediately rotated at the synchronous speed. The rotor requires an acceleration time due to the moment of inertia. Therefore, the synchronous motor requires a starting aid, preferably a starting cage. When the rotor approaches the synchronous speed, the excitation current of the rotor winding is turned on to pull the rotor into the rotating stator rotating field.

The impeller is a movable rotating part of the pump. The impeller is preferably part of the rotor.

The impeller consists of a (guide) vane, vane or rotor blade that is preferably held by the rotor by suitable securing means.

The impeller is preferably joined to the rotor in a materially joined manner. It can be integrally molded with a casting or a welded joint between the impeller and the rotor. You can also use a shape that can also be removed to connect.

The impeller is preferably made of non-ferrous metal, metal or plastic.

The use of a flange is a method of establishing a releasable tight connection between pipe segments. The tightness depends on the pressing force of the seal applied between the sealing faces by the annular seal faces. Preferably, the pressing force is achieved by means of a screw connection which is inserted through the bore into the flange of the flange.

A bearing is a mechanical part used to guide opposing moving parts. The bearings help to achieve the desired degree of freedom of motion and prevent undesired degrees of freedom of motion.

According to a beneficial development of the present invention, the bearing is a plain bearing, a rolling bearing or a ball bearing.

This keeps friction, power consumption and wear as low as possible. Preferably, it is a radial bearing, and particularly preferably a radial axial bearing (diameter axial bearing). You can also use more efficient hydrostatic sliding bearings.

According to another advantageous refinement of the present invention, the bearing is arranged between the stator and the rotor. Wherein the bearings surround the outer surface of the rotor and are disposed on the inner surface of the stator. The bearing, the rotor and the stator are preferably hollow cylindrical.

The bearings are preferably arranged radially and/or axially between the stator and the rotor to mount the stator and rotor in a displacementless manner inside the synchronous motor.

By providing a bearing between the stator and the rotor, it is possible to help the synchronous motor achieve a nearly constant uniform rotational motion while ensuring high efficiency.

According to another advantageous refinement of the present invention, at least one bearing frame is further provided.

This allows the rotor to be mounted in the pump with a bearing. The bearing frames are preferably configured to have a receiving member for receiving a shaft, preferably a bore, wherein the bore extends centrally along the longitudinal direction of the pump.

According to another advantageous refinement of the present invention, the bearing frame has a shaft.

The simplest form of the shaft is a rod-type mechanical component for transmitting rotational motion and torque. Unlike the axis, the shaft actually transmits torque and is subjected to a torsional load.

These bearing structures cause the shaft to be housed.

According to another advantageous refinement of the present invention, the shaft is used to guide the impeller.

This ensures that the impeller and rotor are accurately centered in the pump.

The impeller connected to the rotor is preferably also attached to the shaft.

Among them, a material joint connection (integral casting or welding) or a form-fit connection (a dovetail or eucalyptus joint) is preferred. The resulting press fit can be used to transfer torque to the shaft as well as to compensate for the large centrifugal forces generated by rapid rotation of large machines.

According to another advantageous refinement of the present invention, at least one bearing is provided between the bearing frame and the shaft.

Thereby keeping the friction, power consumption and wear inside the bearing as low as possible quasi. The shaft can be rotated without any hindrance.

According to another advantageous refinement of the present invention, the bearing frame is connected to the stator.

In this way, the bearing frame can be fixedly mounted to the stator in a simple manner and mounted in the pump. Preferably, the fixing is achieved by means of a welded joint or a composite cast joint.

The bearing frame preferably has at least one fixed connection to the stator. Thereby, the bearing frame can be connected to the stator by, for example, an arm.

In order to increase the rigidity of the connection, it is particularly preferable to provide two, three, four or more fixed connections to the stator.

According to another advantageous refinement of the present invention, the medium is a liquid, semi-liquid or solid medium.

In addition to liquid and semi-liquid media, solid materials such as gravel and gravel can also be transported.

According to another advantageous refinement of the present invention, the pump can be integrated into the piping system. The pump can be attached to any existing piping system or integrated into a system by installing a tubular flange at both ends of the synchronous motor.

1‧‧‧ pump

2‧‧‧ synchronous motor

3‧‧‧Rotor

4‧‧‧ Stator

5‧‧‧ bearing

6‧‧‧ bearing frame

7‧‧‧Axis

8‧‧‧ Impeller

9‧‧‧First pipe flange

10‧‧‧Second pipe flange

The embodiments are described in detail below with reference to the drawings, and in which further advantages and technical details of the present invention are set forth.

Figure 1 is a perspective view of the pump of the present invention.

Figure 2 is a longitudinal sectional view of the pump shown in Figure 1.

Figure 3 is a longitudinal cross-sectional view of an alternative embodiment of Figure 1.

Figure 4 is a detail A of Figure 3.

Figure 1 is a perspective view of the pump 1 of the present invention. The pump 1 is basically divided into three sections, that is, a synchronous motor 2 equipped with a casing and a pipe fitting connected to the left and right sides of the synchronous motor 2 Flanges 9 and 10.

Figure 2 is a longitudinal section of a single component of the pump of the present invention. Referring to Figure 2, only a single component will be described separately, and its interaction will be detailed later.

The pump shown in Fig. 2 has the following components: a synchronous motor 2, a sliding bearing 5, an impeller 8 and two pipe flanges 9 and 10 assembled from a rotor 3 and a stator 4.

The rotor 3 of the synchronous motor 2 comprises an impeller 8. The impeller 8 consists of a blade/vane held by the rotor 3 by suitable fixing means. In the present embodiment, the impeller 8 is fixed to the rotor 3 by means of a welded joint or a form fit or a press fit.

The (rotationally symmetrical) rotor 3 is arranged relative to the stator 4 such that the two elements of the synchronous motor 2 do not overlap, i.e., do not directly contact each other, so that no physical contact occurs. In order to ensure this non-contact state, two sliding bearings 5 are provided. The plain bearing 5 is here in the form of a radial hollow cylinder and is arranged around the two outer sections of the side of the rotor 3 .

The sliding bearing 5 is further located in opposite regions of the inside of the stator 4, thereby preventing the rotor 3 from directly contacting the stator 4.

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

The pump 1 of the present invention can continuously and efficiently deliver liquid, semi-liquid and solid medium during the continuous radial rotation movement of the permanent magnet rotor 3. In this process, in addition to ensuring uniform rotation of the impeller, the turbulent flow of the transport medium should be avoided.

Figure 3 is a longitudinal cross-sectional view of a single component of an alternative embodiment of the pump shown in Figure 1. Referring to Figure 3, only a single component will be described separately, and its interaction will be detailed later.

The pump shown in Fig. 3 has the following components: a synchronous motor 2 assembled by a rotor 3 and a stator 4, a sliding bearing 5, a bearing frame 6, a shaft 7, an impeller 8, and two pipe fittings. Flanges 9 and 10.

The rotor 3 of the synchronous motor 2 comprises an impeller 8. The impeller 8 consists of a blade/vane held by the rotor 3 by suitable fixing means. In the present embodiment, the impeller 8 is fixed to the rotor 3 by means of a welded joint or a form fit or a press fit.

The rotor 3 is arranged relative to the stator 4 such that the two elements of the synchronous motor 2 do not overlap, i.e., do not directly contact each other, so that no physical contact occurs. In order to ensure such a non-contact state, two sliding bearings 5, two bearing frames 6 and a shaft 7 are provided.

The bearing frame 6 extends radially toward both sides of the impeller 8 in a cross shape inside the pump 1. The bearing frame 6 is fixed to the stator 4. The bearing frame 6 is used to support the shaft 7. A sliding bearing 5 is provided between the bearing frame 6 and the shaft 7 (Fig. 4). The plain bearing 5 is arranged around the shaft 7 on a section of both ends.

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

The pump 1 of the present invention can continuously and efficiently deliver liquid, semi-liquid and solid medium during the continuous radial rotation movement of the permanent magnet rotor 3. In order to prevent turbulence from forming inside the pump 1, it is preferable to install a cover/round cap (not shown) at both ends of the shaft 7. Therein, the cover has a hemispherical or bell-shaped geometry that is adapted to the flow pattern of the pump.

A compact unit is provided by the pump of the present invention, which has a simple technical structure, a small number of components, high efficiency and an approximate laminar flow pattern.

1‧‧‧ pump

2‧‧‧ synchronous motor

9‧‧‧First pipe flange

10‧‧‧Second pipe flange

Claims (10)

A pump (1) for conveying a liquid, semi-liquid or solid medium, comprising a synchronous motor (2) having a permanent magnet rotor (3) and a stator (4) and two pipe flanges (9, 10), wherein the rotor (3) being separated from the stator (4) by at least one bearing (5) having at least one impeller (8), and the synchronous motor (2) being detachably disposed on the tubular flanges ( Between 9,10). The pump (1) according to claim 1, wherein the bearing (5) is a sliding bearing, a rolling bearing or a ball bearing. A pump (1) according to claim 2, wherein a bearing (5) is provided between the stator (4) and the rotor (3). The pump (1) as claimed in claim 2, wherein at least one bearing frame (6) is further provided. A pump (1) as claimed in claim 4, wherein the bearing frame (6) has a shaft (7). A pump (1) as claimed in claim 5, wherein the shaft (7) is for guiding the impeller (8). The pump (1) as recited in claim 6, wherein at least one bearing (5) is disposed between the bearing frame (6) and the shaft (7). The pump (1) as recited in claim 7, wherein the bearing frame (6) is coupled to the stator (4). A pump (1) as claimed in claim 8, wherein the bearing frame (6) has at least one fixed connection to the stator (4). A pump (1) as claimed in any of the preceding claims, wherein the pump (1) can be integrated into a piping system.