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Internal Bellows Bearings

A bellows and bearing technology, applied in the field of reciprocating pumps, can solve problems such as bellows wear and bellows failure

Active Publication Date: 2020-07-14
GRACO INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Contact between the bellows and the pump rod during normal pump movement can cause bellows to wear and consequently can lead to bellows failure

Method used

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  • Internal Bellows Bearings
  • Internal Bellows Bearings
  • Internal Bellows Bearings

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0023] Pump( figure 1 with figure 2 )

[0024] figure 1 with figure 2 It is a cross-sectional view of the reciprocating pump 10. Will discuss together figure 1 with figure 2 .

[0025] The reciprocating pump 10 includes a housing 12, an upper end 13 of the housing 12 with a bellows chamber 14, a lower end 15 of the housing 12 with a displacement chamber 16, a cylinder manifold 17, a piston 18, a throat seal 19, and an outlet. 20A and 20B, inlets 22A and 22B, conduit 24, rod 26 with shoulder 28 and neck 29, sleeve 30, outer 32 of sleeve 30, collar 34, bellows with inner 38 and crimped portion 40 36. Nut 42, bearing 44, end cover 46 with opening 48 and passage 50, bearing 54, seal 56 and pressure reducing valve 58. figure 1 The flow F through the reciprocating pump 10 is also included.

[0026] The reciprocating pump 10 includes a bellows circulation pump configured to pump paint and / or other fluids. Although paint will be used as an example in this disclosure, it should be under...

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PUM

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Abstract

A reciprocating pump consists of a housing, rod, bellows and bearings. The housing surrounds the bellows chamber and the displacement chamber. A first portion of the rod extends into the bellows chamber. The bellows has a first end connected to the housing and a second end connected to the rod. A bellows surrounds the second portion of the rod. The bellows includes a plurality of convolutions. The bearing is arranged in the bellows between the bellows and the rod.

Description

[0001] Cross-reference related applications [0002] This application claims the priority of US Provisional Application No. 62 / 269,524 entitled "Internal Bellows Bearing" filed on December 18, 2015, the entire content of which is incorporated herein by reference in its entirety. Background technique [0003] The present disclosure relates to reciprocating pumps, and more particularly to reciprocating pumps with bellows seals. [0004] In reciprocating pumps, bellows are used to form a non-sliding seal to prevent the working fluid from being exposed to other fluids, such as outside air. The longer the pump stroke of a reciprocating pump, the longer the bellows required to provide a non-sliding seal. As the bellows becomes longer to accommodate longer pump strokes, the bellows becomes more flexible when compressed and eventually becomes unstable. This will cause the bellows to squirm and flex until the bellows touches the pump rod. The contact between the bellows and the pump rod du...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F04B43/08F04B45/02F04B53/12F04B53/14F04B39/12F04B39/10
CPCF04B1/0448F04B9/10F04B9/12F04B39/041F04B53/008F04B53/147F04B53/22F04B53/14F04B53/144F04B53/16F16C29/02F04B39/10F04B39/123F04B43/084F04B45/02F04B53/12F04B53/146F04B43/08F16C33/201F16C2208/78F16C2360/42
Inventor 蒂姆西·S·罗曼安德鲁·J·卡尔菲克
Owner GRACO INC