CN202612071U - Built-in internal flow type pump mechanical seal - Google Patents

Abstract

A built-in internal flow type pump mechanical seal comprises a movable ring, a stationary ring, a movable ring holder and a spring, and is characterized in that the movable ring is mounted in the movable ring holder through a slide way structure and can slide linearly, the spring and an assistant-mounted check ring are arranged between the movable ring and the movable ring holder, and the movable ring holder is also provided with a screw fixing hole and a key slot. The structure of the built-in internal flow type pump mechanical seal is relatively simple, and the built-in internal flow type pump mechanical seal is highly convenient to produce, mount and use, can meet the mounting requirements of various centrifugal pumps, chemical pumps, pipeline pumps and corrosion-resistant pumps, and is a mechanical seal with better comprehensive performance.

Description

Dress in-flow mechanical seal for pump spare in a kind of

Technical field

The utility model relates to the mechanical sealing technology field, specifically a kind of interior dress in-flow mechanical seal for pump spare.

Background technique

Mechanical seal is to lean on a pair of or several the end face of making slide relative perpendicular to axle to be kept down fitting and is equipped with auxiliary seal and reaches the gland seal device that hinders leakage in elastic force (or magnetic force) effect of hydrodynamic pressure and compensation mechanism.Be made up of elements such as stationary ring, rotating ring, elastic element, spring seat, Cock screw, auxiliary seal rings as the one of which, whether rotating ring and stationary ring can have the nose balance ability according to them toward contact is called compensated loop or non-compensation also.

The end face of rotating ring and stationary ring is fitted each other and is done the motive sealing of slide relative, and it is the primary seal in the mechanical seal device, also is the decision mechanical sealing performance and the key in life-span.Therefore, very high to the processing request of seal face, keep necessary lubricating liquid film between seal face in order to make simultaneously, the compressive load per unit area on the necessary strict chamber system end face, pressure is excessive, is difficult for forming stable lubricating liquid film, can quicken the wearing and tearing of end face; Pressure is too small, and leakage rate increases.So will obtain excellent sealing performance has enough life-spans again, when design and installation mechanical seal, must guarantee that end face compressive load per unit area value is in optimal scope.

Wherein the axial region position in centrifugal pump, chemical pump, pipeline mounted pump and various anti-corrosive pump need use mechanical seal to guarantee the proper functioning of pump, and present single mechanical end face seal part structure is optimized inadequately, also has further improved space.

The model utility content

The purpose of the utility model is to provide a kind of interior dress in-flow mechanical seal for pump spare, improves its combination property through structure is improved further.

The technological scheme that its technical problem of the utility model solution is taked is: dress in-flow mechanical seal for pump spare in a kind of, comprise rotating ring, stationary ring, rotating seat and spring, and it is characterized in that,

The coaxial setting of said rotating ring, stationary ring and rotating seat;

But described rotating ring is installed in the rotating seat through chute structure linear slide, and between said rotating ring and rotating seat, is provided with spring and the auxiliary back-up ring of installing, and also is provided with screw fastener hole and keyway on the said rotating seat;

The described rotating ring the other end matches with the stationary ring end face, on said stationary ring, is provided with the keyway that matches with axle.

Between said back-up ring and rotating ring, be provided with sealing gasket.

The beneficial effect of the utility model is: the utility model structure is simple relatively, makes, installs and uses all very convenient, can satisfy the installation needs of various centrifugal pumps, chemical pump, pipeline mounted pump and anti-corrosive pump, is the better mechanical sealing element of a kind of combination property.

Description of drawings

Fig. 1 is the whole-cutaway view of the utility model;

Among the figure: 1 rotating ring, 11 chute structures, 2 stationary rings, 21 auxiliary keyways, 3 rotating seats, 31 screw fastener holes, 32 keyways, 4 springs, 5 back-up rings, 6 sealing gaskets.

Embodiment

As shown in Figure 1, a kind of interior dress in-flow mechanical seal for pump spare comprises rotating ring 1, stationary ring 2, rotating seat 3 and spring 4.

Rotating ring 1, stationary ring 2 and rotating seat 3 all are ring bodies, and the coaxial setting of rotating ring, stationary ring and rotating seat.Inboard at rotating seat has sliding-groove, is used to install rotating ring.

But rotating ring 1 is installed in the rotating seat through chute structure 11 linear slide, and this chute structure only allows rotating ring to do straight line motion with respect to rotating seat, does not allow rotation.And between rotating ring 1 and rotating seat 3, be provided with spring 4 and the auxiliary back-up ring 5 of installing, so just give pretightening force of rotating ring, make rotating ring maintain an original state all the time.For increasing sealability, between back-up ring 5 and rotating ring 1, be provided with the sealing gasket 6 of rubber.Also be provided with screw fastener hole 31 and keyway 32 on the rotating seat 3, be used for installing.

Rotating ring 1 the other end matches with the stationary ring end face, and both are the cooperation of contact-type, on stationary ring 2, is provided with the auxiliary keyway 21 that matches with axle, is used for the installation of this mechanical sealing element.

Except that the described technical characteristics of specification, be the known technology of those skilled in the art.

Claims (2)

1. dress in-flow mechanical seal for pump spare in a kind comprises rotating ring, stationary ring, rotating seat and spring, it is characterized in that,

The coaxial setting of said rotating ring, stationary ring and rotating seat;

But described rotating ring is installed in the rotating seat through chute structure linear slide, and between said rotating ring and rotating seat, is provided with spring and the auxiliary back-up ring of installing, and also is provided with screw fastener hole and keyway on the said rotating seat;

The described rotating ring the other end matches with the stationary ring end face, on said stationary ring, is provided with the keyway that matches with axle.

2. a kind of interior dress in-flow mechanical seal for pump spare according to claim 1 is characterized in that, between said back-up ring and rotating ring, is provided with sealing gasket.

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