Planetary screw machine
A planetary screw and mechanical technology, applied in the field of machinery, can solve the problems of shortening the service life, aggravating wear, loss of energy, etc., to achieve the effect of shortening the service life and increasing the wear and tear
Inactive Publication Date: 2015-09-16
陶为祥
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Problems solved by technology
[0002] The friction surfaces of the existing single-screw and twin-screw compressors are all rotating at high speed. Due to the centrifugal force of high-speed rotation, it is difficult to form an effective oil film on the friction surface, which will aggravate wear and shorten the service life.
In addition, the bearings of twin-screw compressors not only bear radial force, but also bear huge axial pressure, which greatly shortens the service life
[0003] The vane-type hydraulic or pneumatic motors and hydraulic pumps in the prior art lose energy and aggravate wear because the vanes reciprocate in the vane slots. In addition, the vanes are easily stuck in the vane slots and affect the work.
[0004] Piston hydraulic pumps and hydraulic motors in the prior art have complex structures, large volumes, and low efficiency ratios
Method used
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[0025] The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.
[0026] see figure 1 , with reference to figure 2 , image 3 , Figure 4 . The planetary screw machine of the present invention includes a casing 1 , a central sun gear 2 and at least one planetary screw 3 . There are two planetary screws 3 in this embodiment.
[0027] The casing 1 is composed of a cylindrical body 11 and end caps 12 connected at both ends of the cylindrical body. The inner wall of the cylindrical body is divided into two parts, left and right. Each of the two parts is provided with a set of multi-head internal threads. The tooth shape of the thread is concave. The helical direction of the internal thread of the group is opposite. The middle part of the casing cylinder is provided with an inlet 13 to communicate with the inner cavity, and two ends are respectively provided with outlets 14 to communicate with the inner c...
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A planetary screw machine comprises a shell, a central sun gear and at least one planetary screw. The shell is composed of a cylinder and end covers connected to two ends of the cylinder, the inner wall of the cylinder is divided into a left part and a right part, the left part and the right part are respectively provided with a group of multiple-threaded internal screw threads, and the spiral directions of the two groups of internal screw threads are opposite to each other. The central sun gear comprises a circular column and a central rotating shaft, and the central rotating shaft is arranged on the shell through a bearing. The at least one planetary screw is eccentrically arranged in the central sun and is engaged and connected with the internal screw threads of the shell, the left part and the right part of the planetary screw are respectively provided with a group of single-threaded or multiple-threaded external screw threads, the spiral directions of the two groups of the external screw threads are opposite to each other, and the external screw threads are engaged and connected with the internal screw threads of the shell. The planetary screw machine can be used as a compressor, can also be used as a hydraulic pump or a pneumatic motor, and has the advantages of energy saving and high efficiency.
Description
technical field [0001] The invention relates to a machine, in particular to a planetary screw machine. Background technique [0002] The friction surfaces of the existing single-screw and twin-screw compressors rotate at high speed. Due to the centrifugal force of high-speed rotation, it is difficult to form an effective oil film on the friction surface, which aggravates wear and shortens the service life. In addition, the bearings of twin-screw compressors not only bear radial force, but also bear huge axial pressure, which greatly shortens the service life. [0003] The vane-type hydraulic or air motors and hydraulic pumps in the prior art lose energy and aggravate wear because the vanes reciprocate in the vane slots. In addition, the vanes are easily stuck in the vane slots and affect the work. [0004] The piston type hydraulic pump and the hydraulic motor in the prior art have complex structure, large volume and low efficiency ratio. Contents of the invention [000...
Claims
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IPC IPC(8): F01C1/16
CPCF04C18/165F01C1/165F04C2/165
Inventor 陶为祥
Owner 陶为祥