Embedded single sealing device without sealing cover

Abstract

The invention relates to an embedded single sealing device without a sealing cover and belongs to the technical field of mechanical equipment. According to the sealing device, a spring box assembly and a dynamic ring are arranged on a shaft sleeve coaxially, a static ring and a rotation prevention pin are installed at the rear end portion of a seat sleeve body, a seat sleeve and the static ring are fixed relatively through the rotation prevention pin, a sealing ring is arranged between the seat sleeve and the static ring, and the seat sleeve is sleeved outside the shaft sleeve. The dynamic ring and the static ring are attached tightly, and a sealing ring is arranged between the spring box assembly or the dynamic ring and the shaft sleeve. The sealing device can form a container type whole. A throttle sleeve is installed on the seat sleeve body, and a limit plate is arranged on the throttle sleeve. During installation, the sealing device can be integrally installed in a machine casing from one direction; during disassembly, replacement or maintenance, the sealing device can be disassembled from a shaft for one time. Therefore, the assembling single sealing device without the sealing cover is convenient, fast, and capable of improving work efficiency and operation reliability and reducing cost effectively.

Description

technical field [0001] The invention relates to an embedded single sealing device without a cover, in particular to a single-end mechanical sealing device that does not use a mechanical sealing gland and can be assembled and disassembled quickly, and belongs to the technical field of mechanical equipment. Background technique [0002] At present, the known single-end mechanical seal is connected to the machine casing by a mechanical seal gland or a seal seat, forming a sealed cavity with the machine casing, and installing a seal pair (seal static ring, seal dynamic ring and other seal components) A sealing effect is formed in the sealing cavity. In fluid machinery, mechanical seals are often used to isolate the fluid medium conveyed by the machine, such as a pump, from the outside world without leakage. figure 1 Shown is a single seal arrangement, figure 1 Among them, I is the pump cover or the machine casing, II is the shaft, III is the shaft sleeve, and IV is the mechani...

AI Technical Summary

Problems solved by technology

When installing the existing mechanical seal, since the mechanical seal gland cannot pass through the machine casing such as the pump cover sealing chamber, the mechanical seal gland must first be threaded through the shaft, and then the mechanical seal gland must be passed through the connecting parts such as bolts or screws. The column is fixed on the machine casing such as the pump cover, resulting in the following disadvantages of the known single-end mechanical seal: On the one hand, in order to ensure the smooth installation and connection of the mechanical seal gland on the machine casing such as the pump cover, it must be installed on the mechanical seal gland Sufficient axial installation distance is left between obstacles; on the other hand, it is time-consuming and labor-intensive to install, disassemble, replace, and repair this type of mechanical seal

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