A 2/3 type double head single screw pump
A single-screw pump and rotor technology, applied in the direction of rotary piston type/swing piston type pump components, pumps, pump components, etc., can solve the problems of reduced pump efficiency, difficult operation, and increased leakage of rotor-stator gaps. To achieve the effect of reducing leakage and improving pumping capacity
Active Publication Date: 2022-07-15
皖江工学院
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Problems solved by technology
The disadvantage is that the rubber bushing is easy to age and wear, and the leakage of the rotor-stator gap increases under high pressure conditions, resulting in a decrease in pump efficiency
[0003] In order to overcome the shortcomings of the single-screw pump, people have improved this pump. For example, the patent document with the publication number CN205744421U discloses an adjustable single-screw pump stator. The elastic pressure plate and bolts between the rubber bushes adjust the interference between the rotor and the stator to increase the service life of the pump, but this adjustment lacks precise detection and control, and the operation is difficult and cannot reduce the aging of the rubber stator risk of shedding
[0004] The patent document with the publication number CN102434458A discloses a double-headed single-screw pump with a metal stator and a 2 / 3-type nylon compound on the surface of the rotor. Its main purpose is to reduce the impact of rubber stator swelling and aging on pump efficiency. The problem of large leakage under the high pressure condition of the single screw pump is not solved
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[0019] Below with reference to the accompanying drawings, through the description of the embodiments, the specific embodiments of the present invention will be described in further detail, the purpose is to help those skilled in the art to have a more complete, accurate and in-depth understanding of the concept and technical solutions of the present invention, and contribute to its implementation.
[0020] like figure 1 and figure 2 As shown, the present invention provides a 2 / 3-shaped double-headed single-screw pump, comprising a rotor 2 and a stator 1, the rotor 2 is a 2 / 3-shaped double-ended screw rod with an elliptical cross-section, and the stator 1 has an accommodating The cavity of the rotor 2. The rotor 2 is made of a metal material, the stator 1 is made of a metal material and processed by a die-casting process, and the rotor 2 and the stator 1 are in clearance fit.
[0021] Specifically, as figure 1 and figure 2 As shown, the cross-section of the rotor 2 (the ...
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The invention discloses a double-headed single-screw pump with a 2 / 3 profile line, comprising a rotor and a stator. The rotor is a double-ended screw rod with a 2 / 3 profile line and an ellipse cross section. The rotor is made of metal material, so The stator is made of metal material and is die-casting. The lengths of the long axis and the short axis of the elliptical section of the rotor are both along the axis of the rotor from the inlet of the stator to the outlet of the stator and gradually increase, and the inner cavity of the stator section increases accordingly. Intermittent fit that increases and maintains a fixed value. The double-head single-screw pump of the 2 / 3 type line of the present invention can reduce the leakage under high pressure conditions.
Description
technical field [0001] The invention belongs to the technical field of screw pumps, in particular, the invention relates to a double-head single screw pump with a 2 / 3 profile. Background technique [0002] Single-screw pump is a rotary positive displacement pump, which usually uses metal screw and rubber bushing to rotate and mesh to form a progressive sealed cavity to transport media. It is widely used in petroleum, chemical and other fields. The main flow components of the single screw pump are the bushing stator with helical cavity and the screw screw rotor meshing with it; the profile, material and machining accuracy of the screw and bushing are the main factors affecting the performance of the single screw pump. The main advantages of this kind of pump are strong multi-phase mixing capacity, smooth flow and small pressure pulsation. The disadvantage is that the rubber bushing is easy to age and wear, and the leakage of the rotor-stator gap increases under high pressure...
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IPC IPC(8): F04C2/107F04C15/00
CPCF04C2/107F04C15/00F04C2240/10F04C2240/20
Inventor 汪怡然
Owner 皖江工学院