A two-blade rotor assembly of a Roots vacuum pump
A Roots vacuum pump, two-leaf type technology, applied in the direction of pump components, pumping device components for elastic fluid, rotary piston type/oscillating piston type pump components, etc., can solve the problem of low compression ratio, poor sealing, Narrow sealing band and other issues to achieve good pumping efficiency and high compression ratio
Active Publication Date: 2019-12-27
ZHEJIANG CHUANGWEI VACUUM EQUIP CO LTD
View PDF6 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0003] The width of the two ends of the rotor of the current Roots vacuum pump is small, resulting in a narrow sealing zone formed by the two ends of the rotor. The compression ratio obtained by the vacuum pump is low
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 moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0018] The following are specific embodiments of the present invention and in conjunction with the accompanying drawings, the technical solutions of the present invention are further described, but the present invention is not limited to these embodiments.
[0019] Such as figure 1 As shown, the two-lobe rotor assembly of the Roots vacuum pump includes two rotors with the same end surface profile. The end surface profile of the rotor is composed of the same four-section profile segment 1, and the adjacent profile segment 1 is mirrored. The adjacent profile segment 1 Each profile segment 1 is a smooth curve, and each profile segment 1 is composed of addendum arc segment 2, outer arc segment 3, conjugate curve segment 4 and dedendum arc segment connected in sequence Segment 5, addendum arc segment 2 and root arc segment 5 are arc lines, the center of addendum arc segment 2 and root arc segment 5 coincide, and addendum arc segment 2 corresponds to The central angle and the centr...
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
Login to View More Abstract
The invention provides a two-blade rotor module of a roots vacuum pump, belongs to the technical field of vacuum pumps, and solves such technical problems as lower compression ratio in a traditional roots vacuum pump. The two-blade rotor module of the roots vacuum pump comprises two rotors with the same end surface molded lines; the end surface molded lines of the rotors consist of four identical molded line segments; the adjacent molded line segments are arranged in a mirror image manner, and are smoothly transited; each molded line segment is a smooth curve, and consists of a tooth top arc section, an outer arc section, a conjugate curve section and a tooth root arc section; the tooth top arc sections and the tooth root arc sections are both arc lines; the circle centers of the tooth top arc sections are overlapped with the circle centers of the tooth root arc sections; and central angles corresponding to the tooth top arc sections and central angles corresponding to the tooth root arc sections are the same, and are both alpha. The two-blade rotor module has the advantage of higher compression ratio in the roots vacuum pump.
Description
technical field [0001] The invention belongs to the technical field of vacuum pumps, and relates to a Roots vacuum pump, in particular to a two-blade rotor assembly of the Roots vacuum pump. Background technique [0002] The Roots vacuum pump is a rotary fluid machine. Two Roots rotors that can cohere with each other perform synchronous counter-rotational double-rotation motions to generate a vacuum at the suction end and form a pressure difference to realize the suction and discharge of gas. The profile line of the Roots rotor and its conjugate meshing characteristics have a great influence on the area utilization of the rotor and the sealing performance and operating efficiency of the Roots vacuum pump. Therefore, the reasonable design of the Roots rotor profile is very important. [0003] The width of the two ends of the rotor of the current Roots vacuum pump is small, resulting in a narrow sealing zone formed by the two ends of the rotor. The compression obtained by the...
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
Login to View More Patent Type & Authority Patents(China)
IPC IPC(8): F04C29/00F04C18/14
CPCF04C18/14F04C29/00F04C2240/20F04C2250/20
Inventor 柯建汝
Owner ZHEJIANG CHUANGWEI VACUUM EQUIP CO LTD