Hydraulic cylinder retractable sealing device and hydraulic cylinder

Abstract

The invention relates to the field of hydraulic devices, in particular to a hydraulic cylinder retractable sealing device and a hydraulic cylinder. The hydraulic cylinder retractable sealing device comprises an inner sealing sleeve and an outer sealing sleeve; the outer sealing sleeve adopts aluminum foil cloth, and the inner sealing sleeve comprises outer layer heat-insulating cloth and inner layer flame-retarding cloth; the two ends of the inner sealing sleeve and the outer sealing sleeve are both opened, and the inner sealing sleeve is arranged in the outer sealing sleeve; and the two ends of the inner sealing sleeve are connected into two end openings of the outer sealing sleeve correspondingly. The hydraulic cylinder retractable sealing device adopts a matching mode that the aluminum foil cloth, the outer layer heat-insulating cloth and the inner layer flame-retarding cloth are arranged from outside to inside, so that the hydraulic cylinder retractable sealing device has a good heat-insulating property and a good naked-light-resistant property and meanwhile has a good appearance effect.

Description

technical field [0001] The invention relates to the field of hydraulic equipment, in particular to a hydraulic cylinder telescopic sealing device and a hydraulic cylinder. Background technique [0002] Garbage incineration is currently the most common garbage treatment method in foreign countries. The biggest advantage of this method is the high degree of garbage recycling and reduction. It has become the main way to deal with domestic garbage in developed countries and an important part of the power industry. In western developed countries, the application of waste incineration technology has a history of nearly 130 years, and it is still considered to be one of the most effective and economical waste disposal technologies. [0003] In recent years, China has independently developed, introduced, digested and absorbed common equipment for waste incineration treatment, and has developed a variety of waste incinerator equipment. Some products have been used in projects, but th...

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Problems solved by technology

[0004] The existing typical waste incinerator is mechanically reciprocating. A hydraulic cylinder is installed in the high-temperature air chamber of the waste incinerator to drive the reciprocating motion of the incinerator grate. Because the temperature in the high-temperature air chamber is relatively high and open flames often appear, in order to ensure For the safe use of the hydraulic cylinder, an expansion joint is connected between the shell of the hydraulic cylinder and the connector, and the expansion joint plays a role of sealing and heat insulation, but the expansion joint has a short service life, unreliable sealing, and inconvenient installation and disassembly , poor heat insulation and fire prevention performance, etc.

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