An automatic cleaning mechanism for a compression spring track eccentric bearing

Abstract

An automatic cleaning mechanism for an eccentric bearing of a compression spring track. Under the action of the end surface of the track, the self-rotating hook head shaft drives the cleaning screw to generate axial reciprocating motion, which effectively strengthens the automatic cleaning ability of the cleaning screw. The uphill section of the end surface of the track decelerates the rotation of the cleaning screw to a slow rotation, which reliably prevents wear. The compression spring ingeniously provides soft landing for the hook head shaft during the downhill steep descent stroke, and the elastically compressed energy storage provides a boosting force for increasing the ascent height. The floating end face bearing supported by the compression spring reduces the pressure and wear speed of the hook head shaft on the end face of the track, reduces the total resistance moment of the cleaning screw rotation, and helps the cleaning screw to achieve a larger reciprocating stroke. The automatic cleaning mechanism has strong automatic cleaning ability, good cleaning uniformity and high reliability in preventing wear, and is suitable for automatic cleaning and heat transfer enhancement of tube-and-tube heat exchangers with relatively high flow rates.

Description

technical field [0001] The invention relates to an automatic cleaning mechanism for an eccentric bearing of a compression spring track, which relates to online continuous automatic cleaning and anti-scaling of liquid soft and hard scales on the inner wall of a heat exchange tube and enhancement of convective heat transfer inside the heat exchange tube. It is generally used in shell and tube condensers, evaporators and crystallizers where the material liquid in the heat exchange tube will produce soft and hard scales. Background technique [0002] There are many technologies for online continuous automatic cleaning of liquid dirt on the inner wall of heat exchange tubes. As we all know, the earliest success is the rubber ball cleaning device, which has significant advantages for large heat exchangers such as condensers for power plant steam turbines, but it is too complicated and expensive for hundreds of small-area condensers in the petrochemical industry. Not applicable. ...

AI Technical Summary

Problems solved by technology

[0005] An automatic cleaning mechanism for the eccentric bearing of the compression spring track proposed by the patent of the present invention can inherit the basic advantages of the self-rotation cleaning spiral cleaning technology, and from the perspective of mechanism kinematics and dynamics, it can better solve the previous self-rotation cleaning spiral wear problem Uneven cleaning of dirt and dirt: The axial reciprocating movement of the cleaning screw effectively enhances the cleaning ability of descaling and significantly improves the uniformity of automatic cleaning. With the help of the deceleration of the uphill structure of the reciprocating track, the self-rotating cleaning screw is reliable. Reduced to the slow rotation state, avoiding the rapid rotation of the cleaning spiral to wear the inner wall of the heat exchange tube, and ensuring the service life of the heat exchange equipment

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