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Screw pump

A screw pump and screw technology, applied to pumps, pump components, rotary piston pumps, etc., can solve the problems of cumbersome installation, difficult alignment, and difficulty in pushing a bush or multiple bushes to the end of the screw, etc. , to achieve the effect of easy assembly, simple structure and novel arrangement

Active Publication Date: 2019-04-05
LEISTRITZ PUMPEN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Fitting and centering bushings that are floating in the unloaded state is very tedious because especially when setting two idler screws it is difficult to get one or both bushings in proper alignment with the ends of the screws and due to For this reason, it is very difficult to push a bushing or bushings onto the end of the screw, which usually requires several attempts to achieve

Method used

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Embodiment Construction

[0037] figure 1 A partially exploded view of a screw pump 1 according to the invention is shown. Shown is a housing 2 in which a first hole 3 for fixing the drive screw is formed in the middle of the housing 2 and two additional holes 4, 5 laterally offset from the first hole 3 are formed in the housing, Each additional hole accommodates an idler screw which engages the drive screw. The screw is not shown therein. The bores 4 , 5 for fastening the idler screws extend as far as they are directly flush with the end face 6 of the housing 2 .

[0038] Also shown is a housing cover 7 which is tightly screwed onto the housing 2 by means of suitable fastening screws to close it.

[0039] Also shown are two bushings 8,9, which are part of the hydraulic thrust compensation system, by which the two idler screws are axially supported. The design and function of the bushings 8,9 will be further discussed next. Two pins 10,11 are used to fix the bushing in place non-rotatably; one end...

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Abstract

The invention discloses a screw pump. The screw pump is provided with a shell (2), a shell cover (7), one or more inert wheel screws (17,18), and bushes (8,9); the inert wheel screws (17,18) are fixedinto holes (4,5) in the shell (2); the bushes (8,9) are arranged on the shell cover (7), the shell cover (7) is provided with accommodating spaces (32,33) defined by cylindrical flanges (19, 20), oneends (29) of the inert wheel screws (17,18) are connected into the cylindrical flanges (19, 20), openings (37,38) are formed in the bottoms of the bushes (8,9), a fluid supplied by a feeding channel(34) in a cover is supplied from the opposite ends of the inert wheel screws (17,18) to the end faces (30,31) of the inert wheel screws (17,18) through the openings (37,38) under the pressure, the bushes (8,9) are connected into accommodating parts (21,22) in the cover in a radial clearance mode and comprise radial flanges (25,26), the bushes are axially supported on the shell (2) through the radial flanges, and the annular flanges (25,26) of at least one part of the bushes (8,9) are connected into the holes (4,5) and accommodated in the holes through a certain gap.

Description

technical field [0001] The invention relates to a screw pump with a housing, a housing cover, at least one idler screw accommodated in a bore of the housing and a bushing arranged on the housing cover, the bushing having a cylindrical The flange defines a receiving space in which one end of the idler screw engages, and the bottom of the bushing has an opening through which fluid supplied by the feed channel in the cover can be passed under pressure from the opposite side of the idler screw. One end feeds into the end face of the idler screw. Background technique [0002] Screw pumps are used to transport various fluid media. Progressive cavity pumps consist of a housing with at least two screws, a drive screw and at least one idler screw driven by the drive screw, however, often two idler screws are provided, one of which is arranged in the center of the drive either side of the screw. After the screws engage each other, one or more idler screws are driven by the drive sc...

Claims

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Application Information

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IPC IPC(8): F04C2/16F04C15/00
CPCF04C2/16F04C15/00F04C2240/605
Inventor 奥利维尔·特罗斯曼拉尔夫·里克特
Owner LEISTRITZ PUMPEN
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