CN201651328U

CN201651328U - Mechanical seal device convenient to disassemble and assemble

Info

Publication number: CN201651328U
Application number: CN201020242699XU
Authority: CN
Inventors: 胡克荣; 朱永杰
Original assignee: Individual
Current assignee: Individual
Priority date: 2010-06-30
Filing date: 2010-06-30
Publication date: 2010-11-24
Anticipated expiration: 2020-06-30

Abstract

The utility model provides a mechanical seal device which is convenient to disassemble and assemble. The mechanical seal device comprises a stationary ring device, and a rotating ring device, wherein the stationary ring device and the rotating ring device are sleeved on a rotating shaft and tightly cling to each other, and the rotating ring device comprises a rotating ring, an outer ring, an O-shaped ring, a spring, a connecting piece, an inner ring, a lip-shaped ring, a retainer ring, a shaft seal ring, and a compression ring; and the outer ring and the inner ring are fixedly connected with the rotating shaft through the connecting piece, and the spring, the compression ring, the retainer ring, the O-shaped ring, the lip-shaped ring, and the rotating ring are positioned in grooves formed between the outer ring and the inner ring in sequence. The utility model has the advantages of convenient assembly and disassembly, good vibration resistance, and automatic compensation after the end face is abraded.

Description

A kind of mechanical seal device of easy accessibility

Technical field

The utility model relates to a kind of mechanical seal device, relates in particular to a kind of mechanical seal device of easy accessibility.

Background technique

Mechanical seal device is by a pair of or several the end face of making slide relative perpendicular to axle is kept down fitting and is equipped with auxiliary seal and reaches the gland seal device of resistance leakage in elastic force (or magnetic force) effect of hydrodynamic pressure and compensation mechanism.The conventional machinery sealing configuration, be made up of elements such as stationary ring (stationary ring), rotating ring (rotating ring), elastic element, spring seat, Cock screw, rotating ring auxiliary seal ring and stationary ring auxiliary seal rings, stop pin is fixed on the gland to prevent that stationary ring from rotating.Whether rotating ring and stationary ring can have the nose balance ability according to them toward contact is called compensated loop or uncompensated ring.Owing to be subjected to temperature, pressure, the pH value of sealing medium, and the influence of factors such as the linear velocity of equipment, surface roughness, coaxality, footpath jumping, off-centre, just require mechanical seal device to have following characteristics, there are certain elastoplasticity, chemical stability, impermeability, self lubricity, temperature tolerance, easy accessibility, manufacturing simple, cheap.These characteristics directly affects the sealability and the working life of mechanical seal device, and the mechanical seal device that can meet above-mentioned all properties characteristics fully seldom, so obtain the mechanical seal device of high-quality and improve its performance, be the emphasis of field of sealing technology scientific research always.Mechanical seal and soft packing seal relatively have following advantage: sealing is reliable, and macrocyclic in service, sealing state is very stable, and leakage rate is very little, and by rough Statistics, its leakage rate generally only is 1/100 of soft packing seal; Long service life generally can reach 1～2 year or the longer time in oil, water class medium, also can reach more than half a year usually in chemical medium; Friction horsepower consumes little, and the friction horsepower of mechanical seal only is 10%～50% of soft packing seal; Axle or axle sleeve are not subjected to abrasion basically; Service cycle is long, can compensate automatically behind the end wear, generally speaking, does not need regular maintenance; Good anti-vibration, insensitive to vibration, beat and the axle of running shaft to the deflection of Seal cage; Applied widely, mechanical seal can be used for low temperature, high temperature, vacuum, high pressure, different rotating speeds and various Korrosionsmedium and contain the sealing of abrasive particle medium etc.But its shortcoming has: structure is complicated, to making the processing request height; Installation is cumbersome with replacing, and requires the workman that certain mounting technique level is arranged; When the contingency accident takes place, handle difficulty; The one-time investment height.Particularly the scientific research that can compensate automatically behind easy accessibility, good anti-vibration, the end wear make us pay close attention to.

Summary of the invention

For addressing the above problem, the utility model provides a kind of mechanical seal device of easy accessibility, and this device is easy for installation and disassembly, can compensate automatically after the good anti-vibration, end wear.

For achieving the above object, the technological scheme that the utility model adopted is;

A kind of mechanical seal device of easy accessibility, comprise stationary ring device, rotating ring device, described stationary ring device, rotating ring device are placed in the rotating shaft, and the two fits tightly together, and described rotating ring device comprises rotating ring, outer shroud, round section joint ring, spring, link, interior ring, lip circle, retainer ring, axle seal, pressure ring; Described outer shroud is fixedlyed connected with rotating shaft by link with interior ring, and described spring, pressure ring, retainer ring, " 0 " shape circle, lip circle, rotating ring are successively between outer shroud and interior ring in the formed groove.

Described stationary ring device comprises stationary seat, rotary gland, stationary ring, described stationary seat is fixed in the rotating shaft, described rotary gland is embedded on the end face of stationary seat by leg, described stationary ring embeds the end face of rotary gland, and described stationary ring device, rotating ring device fit tightly together by stationary ring, rotating ring.

On the described lip circle arc surface is arranged, described lip circle contacts by the cylindrical of arc surface with " 0 " shape circle, and the cylindrical of described arc surface and round section joint ring coincide.

Described link is a set screw.

The utility model has improved the mechanical sealing linkage ring device, wherein adds the sealing configuration that sealing that the combining form of lip circle constitutes has promptly changed original single form herein by " 0 " shape circle; In the ring and the combining form of outer shroud, like this under the promotion of spring, will " 0 " shape enclose and the lip circle is pressed in rotating ring and make this rotating ring can be along the fluted shaft between interior ring and the outer shroud to slip by interior ring, outer shroud, pressure ring, retainer ring.

The effect that the utility model is easy for installation and disassembly, can compensate automatically after the good anti-vibration, end wear.

Description of drawings

Fig. 1 is a kind of structural representation of mechanical seal device of easy accessibility.

Fig. 2 is that the part among Fig. 1 connects enlarged diagram.

Fig. 3 is the structural representation that the lip circle cooperates with round section joint ring.

Wherein: stationary ring device 1, rotary gland 1-1, leg 1-1-1, stationary ring 1-2, stationary seat 1-3, rotating ring device 2, rotating ring 2-1, outer shroud 2-2, " 0 " shape circle 2-3, spring 2-4, link 2-5, interior ring 2-6, lip circle 2-7, arc surface 2-7-1, retainer ring 2-8, axle seal 2-9, pressure ring 2-10, groove 2-11, rotating shaft 3.

Embodiment

To closing drawings and Examples the utility model is further described below.

As Fig. 1, Fig. 2, shown in Figure 3, a kind of mechanical seal device of easy accessibility comprises stationary ring device 1, rotating ring device 2, and stationary ring device 1, rotating ring device 2 are placed in the rotating shaft 3.

Rotating ring device 2 comprises rotating ring 2-1, outer shroud 2-2, round section joint ring 2-3, spring 2-4, link 2-5, interior ring 2-6, lip circle 2-7, retainer ring 2-8, axle seal 2-9, pressure ring 2-10; Link 2-5 is a set screw.

Outer shroud 2-2 is that set screw is fixedlyed connected with rotating shaft 3 with interior ring 2-6 by link 2-5, and spring 2-4, pressure ring 2-10, retainer ring 2-8, " 0 " shape circle 2-3, lip circle 2-7, rotating ring 2-1 are successively between outer shroud 2-2 and interior ring 2-6 in the formed groove 2-11.

Stationary ring device 1 comprises rotary gland 1-1, stationary ring 1-2, stationary seat 1-3, and stationary seat 1-3 is fixed in the rotating shaft 3, and rotary gland 1-1 is embedded on the end face of stationary seat 1-3 by leg 1-1-1; Stationary ring 1-2 embeds the end face of rotary gland 1-1; Stationary ring device 1, rotating ring device 2 fit tightly together by stationary ring 1-2, rotating ring 2-1.

On the lip circle 2-7 arc surface 2-7-1 is arranged, described lip circle 2-7 contacts with the cylindrical of " 0 " shape circle 2-3 by arc surface 2-7-1, and the cylindrical of described arc surface 2-7-1 and round section joint ring 2-3 coincide.

During work along with the rotation of rotating shaft 3, stationary ring device 1, outer shroud 2-2, interior ring 2-6 are with rotating shaft 3 rotations, and under the effect of spring 2-4, in ring 2-6, outer shroud 2-2, pressure ring 2-10, retainer ring 2-8 will " 0 " shape enclose 2-3 and lip circle 2-7 and be pressed in rotating ring 2-1 rotating ring 2-1 and stationary ring 1-2 are fitted tightly, and this rotating ring 2-1 can endwisely slip along the groove 2-11 between interior ring 2-6 and the outer shroud 2-2, this structure can be recompensed behind the end wear that contacts between stationary ring 1-2 and the rotating ring 2-1 automatically, and installation, convenient disassembly, good anti-vibration, good sealing effect.

Claims

1. the mechanical seal device of an easy accessibility, comprise stationary ring device (1), rotating ring device (2), described stationary ring device (1), rotating ring device (2) are placed in the rotating shaft (3), and the two fits tightly together, it is characterized in that: described rotating ring device (2) comprises rotating ring (2-1), outer shroud (2-2), round section joint ring (2-3), spring (2-4), link (2-5), interior ring (2-6), lip circle (2-7), retainer ring (2-8), axle seal (2-9), pressure ring (2-10); Described outer shroud (2-2) is fixedlyed connected with rotating shaft (3) by link (2-5) with interior ring (2-6), and described spring (2-4), pressure ring (2-10), retainer ring (2-8), " 0 " shape circle (2-3), lip circle (2-7), rotating ring (2-1) are positioned at formed groove (2-11) between outer shroud (2-2) and the ring (2-6) successively.

2. the mechanical seal device of easy accessibility according to claim 1, it is characterized in that: described stationary ring device (1) comprises stationary seat (1-3), rotary gland (1-1), stationary ring (1-2), described stationary seat (1-3) is fixed in the rotating shaft (3), described rotary gland (1-1) is embedded on the end face of stationary seat (1-3) by leg (1-1-1), described stationary ring (1-2) embeds the end face of rotary gland (1-1), and described stationary ring device (1), rotating ring device (2) fit tightly together by stationary ring (1-2), rotating ring (2-1).

3. the mechanical seal device of easy accessibility according to claim 1, it is characterized in that: arc surface (2-7-1) is arranged on the described lip circle (2-7), described lip circle (2-7) contacts by the cylindrical of arc surface (2-7-1) with " 0 " shape circle (2-3), and described arc surface (2-7-1) coincide with the cylindrical of round section joint ring (2-3).

4. the mechanical seal device of easy accessibility according to claim 1, it is characterized in that: described link (2-5) is a set screw.