A three-screw pump bushing
A three-screw pump and bushing technology, used in pumps, pump components, rotary piston pumps, etc., can solve problems such as jamming, cracking, bushing deformation, etc., to reduce the maximum stress and strain, increase the connection area, The effect of overall stress uniformity
Active Publication Date: 2017-08-29
FANCHANG COUNTY JINKE CASTING
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Problems solved by technology
[0002] The bushing is an important part of the three-screw pump. The three-screw pump is widely used in petrochemical, hydraulic, construction machinery, national defense and other fields. It is mainly composed of a main screw, a slave screw and a bush. Rotational movement, when the bushing is under the action of the liquid pressure in the sealing chamber, the stress and strain reach a certain level, the wear between the bushing and the screw is intensified, and when the deformation is serious, the screw will even be "stuck" and the screw pump will be greatly reduced. The service life and efficiency of the bushing, at present most of the bushings are only equipped with a connecting piece at the bushing inlet, so that the bushing will be deformed and cracked during use
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[0017] Example: see Figure 1-3 , a bushing of a three-screw pump according to the present invention, comprising a casing 1, a working chamber 11 is provided inside the casing 1, a bushing inlet 3 is provided at one end of the working chamber 11, and a second bushing inlet 3 is arranged on the outside of the bushing inlet 3. A connecting piece 2, the other end of the working chamber 11 is provided with a bushing outlet 7 and a third connecting piece 6 arranged outside the bushing outlet 7, between the first connecting piece 2 and the third connecting piece 6 The second connecting piece 5, the first connecting piece 2, the second connecting piece 5 and the third connecting piece 6 are all fixedly connected to the housing 1, between the first connecting piece 2 and the second connecting piece 5 and the first connecting piece 5 An annular reinforcing rib 4 is provided between the second connecting piece 5 and the third connecting piece 6 , and the annular reinforcing rib 4 is fix...
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The invention belongs to the technical field of mining industry pump components and discloses a three-screw pump lining. The three-screw pump lining comprises a shell. A work cavity is formed in the shell. One end of the work cavity is provided with a lining inlet and a first connecting sheet arranged on the outer side of the lining inlet. The other end of the work cavity is provided with a lining outlet and a third connecting sheet arranged on the outer side of the lining outlet. A second connecting sheet is arranged between the first connecting sheet and the third connecting sheet. The first connecting sheet, the second connecting sheet and the third connecting sheet are all fixedly connected with the shell. Annular reinforcing ribs are arranged between the first connecting sheet and the second connecting sheet and between the second connecting sheet and the third connecting sheet respectively. The annular reinforcing ribs are fixedly connected with the shell. By the adoption of the three-screw pump lining, the connection region between the connecting sheets and the work cavity is enlarged, and due to the fact that the third connecting sheet is arranged on the lining outlet, the overall stress of the lining tends to be more even.
Description
technical field [0001] The invention relates to a liner, in particular to a three-screw pump liner, and belongs to the technical field of mining pump components. Background technique [0002] The bushing is an important part of the three-screw pump. The three-screw pump is widely used in petrochemical, hydraulic, construction machinery, national defense and other fields. It is mainly composed of a main screw, a slave screw and a bush. Rotational movement, when the bushing is under the action of the liquid pressure in the sealing chamber, the stress and strain reach a certain level, the wear between the bushing and the screw is intensified, and when the deformation is serious, the screw will even be "stuck" and the screw pump will be greatly reduced. In order to improve the service life and efficiency of the bushing, most of the bushings are only equipped with connecting pieces at the inlet of the bushing, which makes the bushing deform and crack during use. [0003] In view...
Claims
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IPC IPC(8): F04C15/00F04C2/16
Inventor 俞学林
Owner FANCHANG COUNTY JINKE CASTING