Mechanical seam with improved structure

Abstract

The invention belongs to the technical field of sealing systems, and relates to mechanical seal with an improved structure. The mechanical seal with the improved structure comprises a rotary shaft, a sealing plate and a transmission sleeve which is arranged between the rotary shaft and the sealing plate, wherein a dynamic ring and a static ring are arranged between the transmission sleeve and the sealing plate; the rear end of the dynamic ring is adhered to the front end of the static ring, and the dynamic ring can rotate relative to the static ring; a ring-shaped accommodating slot is formed between the static ring and the sealing plate; a joint of the dynamic ring and the static ring is positioned in the ring-shaped accommodating slot; a liquid storage cavity which is communicated with the ring-shaped accommodating cavity and used for storing a cooling liquid is formed in the sealing plate; the sealing plate is made from a composite material; and the composite material consists of the following components in parts by weight: 100 parts of polyurethane, 15-25 parts of epoxy resin, 0.1-3 parts of a hydroxylated multi-wall carbon nano tube, 0.5-3 parts of a filler, and 2-15 parts of auxiliaries. According to the mechanical seal, the structure of the mechanical seal is reasonably arranged, and the sealing plate is made from the composite material, so that the mechanical seal with the improved structure is good in sealing effect, good in cooling effect, and prolonged in service life.

Description

technical field [0001] The invention belongs to the technical field of sealing systems and relates to a mechanical seal with an improved structure. Background technique [0002] At present, the commonly used mechanical seal mainly includes the moving ring and the static ring arranged outside the rotating shaft to seal with their opposite sealing end faces, wherein the moving ring is connected to the rotating shaft through locking and can rotate synchronously, and a spring is installed at the end of the static ring. And the static sealing compensation structure including the corresponding spring seat, the static ring penetrates the outer end face of the end cover in the axial direction, the sealing end face is located in the end cover, the tail end extends outside the end cover, and the sealing compensation structure located outside the end cover The spring in it is in elastic contact. [0003] In the prior art, such as the Chinese patent (CN202914750U), a seal includes a st...

AI Technical Summary

Problems solved by technology

[0003] In the prior art, such as the Chinese patent (CN202914750U), a seal includes a static ring, a moving ring, a moving ring seat, a transmission seat and a lining ring arranged at the lower end of the moving ring seat, and the upper end of the static ring is provided with a static sealing ring , the right side of the static ring is provided with a moving ring, the right side of the moving ring is provided with a moving ring seat and a lining ring, the groove of the transmission seat is provided with a transmission seat sealing ring, and the fasteners are fixed. The transmission seat described above, a bellows is provided between the moving ring seat and the transmission seat, although this solution can realize the sealing effect of the seal, but in this solution, no cooling mechanism is provided, and the stationary ring and the moving ring are opposite to each other. The rotation will generate a lot of heat, which will increase the surface temperature of the moving ring and the static ring, and the higher temperature will cause damage to the moving ring and the static ring, reducing the service life of the moving ring and the static ring

Moreover, common sealing rings and sealing discs in the prior art are all made of common resin, and the sealing effect is average, and they are easy to wear and have a short service life.

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