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Stator for eccentric screw pump, eccentric screw pump and method of manufacturing stator

A technology for eccentric screw pumps and stators, applied to pumps, pump components, rotary piston pumps, etc., can solve problems such as the inability of elastomer materials to achieve precise manufacturing, less wear and tear, and even gaps

Active Publication Date: 2019-05-31
NETZSCH PUMPEN & SYST +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

On the one hand, elastomeric materials cannot withstand the temperature

Method used

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  • Stator for eccentric screw pump, eccentric screw pump and method of manufacturing stator
  • Stator for eccentric screw pump, eccentric screw pump and method of manufacturing stator
  • Stator for eccentric screw pump, eccentric screw pump and method of manufacturing stator

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Embodiment Construction

[0030] Figure 1A and Figure 1B A schematic diagram showing the main components of the stator 1 according to the present invention before assembling the stator 1 (compared to figure 2 );and figure 2 A schematic view of a stator 1 manufactured according to the invention is shown. Figure 1ATwo core parts 3 a , 3 b are shown, which together form the stator core 2 . The stator core 2 has a substantially cylindrical outer surface 6 . The core parts 3a, 3b have part configurations (Teilkontur) 8a, 8b respectively, which after the core parts 3a, 3b are assembled together form the inner configuration 7 of the stator 1 (see figure 2 ). The component configurations 8a, 8b are produced with high precision by multi-axis profile milling. It is important for this that the two core parts 3a, 3b have a common base point. One core part 3a comprises two fixing pins 9-1, 9-2 on its contact face 5a with the second core part 3b; and the second core part 3b is in contact with the first cor...

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Abstract

The invention relates to a stator for an eccentric screw pump, the stator having an inner cavity for accommodating a rotor, the inner cavity having an inner configuration of helical turns. The stator comprises a stator core arranged in a stator housing, the stator core being composed of at least two radially separable core parts. According to the invention, at least two radially separable core parts each consist of a metallic material or a technical ceramic material. The stator housing is a stator tube and consists of a metallic material. The stator casing is shrunk onto the stator core. The invention also relates to a method of manufacturing the eccentric screw pump and the stator.

Description

technical field [0001] The invention relates to a stator for an eccentric screw pump, an eccentric screw pump and a method for producing the stator. Background technique [0002] Eccentric screw pumps are pumps for conveying various media, especially viscous, highly viscous and abrasive media such as mud, liquid manure, oil and grease. Eccentric screw pumps known from the prior art comprise a rotor and a stator, wherein the rotor is accommodated in the stator and moves eccentrically in the stator. The stator is formed from an inner side with helical turns. Due to the movement and mutual contact of the rotors, a moving conveying space is formed between the stator and the rotor, by means of which conveying space the fluid medium can be conveyed along the stator. For this purpose, the rotor performs an eccentric rotational movement about the stator axis or about the longitudinal axis of the eccentric screw pump. In the most common embodiment, the outer screw, ie the stator, ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F04C2/107
CPCF04C2/1071F04C2/1075F04C2230/60F04C2240/30F04C2/08F04C15/0057F04C15/0065F04C2240/102
Inventor J·克赖德尔W·赖辛格
Owner NETZSCH PUMPEN & SYST
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