Screw pump

A screw pump and stator technology, used in pumps, pump control, rotary piston pumps, etc., can solve problems such as preload mismatch, reduced service life, and low life of screw pump rotors and stators. The effect of improving the service life and improving the balance

Active Publication Date: 2016-03-02
ZOOMLION HEAVY IND CO LTD
View PDF5 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In the prior art, the clamp 03 for adjusting the pre-tightening force of the screw pair is an integral structure, but to ensure the normal service life of the screw pair, the adjustment of the pre-tightening force of the screw pair must be based on the minimum pre-tightening force between the screw pairs Adjustment, the pretightening force at the inlet end of the screw pair is the smallest, but according to the pressure relationship between the sealed cavity during operation, the pretightening force between the rotor 02 and the stator 01 in the screw pair gradually increases from the inlet end to the outlet end, From the inle...

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Screw pump
  • Screw pump
  • Screw pump

Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach

[0048] Mode 1, each clamping hoop can be a hoop.

[0049] On the basis of the above method 1, if Figure 6 and Figure 7As shown, each hoop is hinged on the same shaft 6 , and the axis line of the shaft 6 is parallel to the axis line of the stator 2 .

[0050] Such as Figure 6 and Figure 7 As shown, a plurality of hoops are arranged in the axial direction of the screw pair, and each hoop is jointly hinged on the same shaft 6, and each hoop hinged on the shaft 6 is wrapped tightly and neatly on the outside of the stator 2, but each hoop Each hoop can adjust the force of the hoop on the corresponding stator 2 by adjusting the bolts on it, so as to realize the adjustment of the pre-tightening force between the part of the stator 2 and the hoop corresponding to the rotor 1 .

[0051] Such as Figure 8 ~ Figure 9 As shown, each clamp can be a double-bolt clamp 5, and the double-bolt clamp 5 is composed of two half-closed clamps.

[0052] Please refer to figure 2 , combin...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The present invention relates to the technical field of engineering machinery, and discloses a screw pump, which comprises a rotor and a stator, wherein the stator is wrapped on the outer side of the rotor, the stator and the rotor form a screw pair, the inner wall of the stator and the outer wall of the rotor are connected in a sealed manner, a plurality of sealed cavities are formed between the inner side of the stator and the outer side of the rotor, the screw pump further comprises a pre-tightening force adjustment device, the pre-tightening force adjustment device comprises a plurality of clamping mechanisms wrapped on the outer side of the stator and aligned along the axial center line direction of the stator, and each clamping mechanism can be separately adjusted, ie., the action forces of each clamping mechanism on the stator can be controlled separately. With the technical scheme of the present invention, the action forces of each clamping mechanism on the stator can be adjusted so as to improve the pre-tightening force equilibrium between the stator and the rotor in the screw pair of the screw pump, such that the wear is generated between the stator and the rotor so as to prolong the service lives of the rotor and the stator.

Description

technical field [0001] The invention relates to the technical field of engineering machinery, in particular to a screw pump. Background technique [0002] At present, the screw pump is widely used as a conveying mechanism in infrastructure construction such as transportation, energy, and construction. It plays a very important role in improving construction efficiency and ensuring project quality. [0003] In the existing technology, such as figure 1 As shown, the screw pump includes a stator 01, a rotor 02, a clamp 03 wrapped outside the stator 01, and an adjusting bolt 04 on the clamp. The stator 01 and the rotor 02 form a screw pair, and the stator 01 and the rotor 02 in the screw pair form a With multiple sealed cavities, the pre-tightening force between all the contact surfaces of the stator 01 and the rotor 02 is the same after assembly. When the screw pair works normally, each sealed cavity generates working pressure, and the pressure difference between each sealed ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): F04C2/107F04C14/00
Inventor 尹友中裴杰周小宾冯怀
Owner ZOOMLION HEAVY IND CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap