CN201396439Y

CN201396439Y - Durable mechanical sealing device

Info

Publication number: CN201396439Y
Application number: CN2009200844550U
Authority: CN
Inventors: 郑中龙
Original assignee: QIANJIANG LAKER SEAFOOD CO Ltd
Current assignee: QIANJIANG LAKER SEAFOOD CO Ltd
Priority date: 2009-03-27
Filing date: 2009-03-27
Publication date: 2010-02-03
Anticipated expiration: 2019-03-27

Abstract

A durable mechanical sealing device is combined by a moving ring component including a moving ring, a rubber corrugated pipe, a moving ring seat, a spring seat and a spring, and a static ring component including a static ring sleeve. An axial bulge and an axial concave bow which are mutually matched are formed at the circumferential surfaces of the moving ring seat and the spring seat respectively, so that when the device is in operation, the spring seat drives the moving ring seat to rotate, and the spring seat and the moving ring seat bear the main torsion torque, while the rubber corrugatedpipe barely bears the torsion torque. Therefore, the durable mechanical sealing device effectively avoids the tearing of the rubber corrugated pipe, ensures the sealing effect, prolongs the service life, improves the working efficiency, and reduces the cost.

Description

The permanent seal cooling mechanical seal device

Technical field:

The utility model relates to the mechanical seal device field of industries such as oil, chemical industry, papermaking, sewage treatment, and tool not says it is a kind of permanent seal cooling mechanical seal device that prevents that working fluid from leaking along running shaft.

Background technique:

The mechanical seal device of prior art comprises by rotating ring, rubber corrugated pipe, rotating seat, moving ring assembly that spring seat and spring are formed and the static components of forming by stationary ring and stationary ring cover, static components and pump housing drive fit, rotating ring outer wall and rubber corrugated pipe are by the inwall drive fit of stationary ring one end, the longitudinal section of described rotating seat is the step surface of band perpendicular to the end face of axle, the inwall of rotating seat and rubber corrugated pipe are by the outer wall drive fit of stationary ring one end, rubber corrugated pipe is a tight fit on the axle away from the inwall of stationary ring one end, the longitudinal section of spring seat is the step surface of band perpendicular to the end face of axle, spring seat inwall and rubber corrugated pipe are away from the outer wall drive fit of stationary ring one end, in the middle of the rubber corrugated pipe two perpendicular to the end face of axle respectively with rotating seat and spring seat perpendicular to two end faces of axle near, spring is against respectively on rotating seat and two end faces of spring seat perpendicular to axle, rotating ring one end face the effect of spring and stationary ring away from the end face of stationary ring cover near.

There is following defective in the seal arrangement of above structure: because described rotating seat and spring seat are separated by far away, during operation, rubber corrugated pipe rotates with axle, and drive rotating ring, rotating seat, spring seat and rotate, rubber corrugated pipe has been born most moment of torsion, and the radial vibration of axle or axial float etc. produce the high pulling torque of moment, cause rubber corrugated pipe to tear easily, be directed at fine and close envelope and lost efficacy, above-mentioned drawback never has the good technical scheme and solves.

Summary of the invention:

The purpose of this utility model provides a kind of permanent seal cooling mechanical seal device that can prevent effectively that rubber corrugated pipe from tearing and then guaranteeing to seal.

For achieving the above object, permanent seal cooling mechanical seal device of the present utility model is by rotating ring, rubber corrugated pipe, rotating seat, spring seat, moving ring assembly and static components are formed, static components and pump housing drive fit, rotating ring outer wall and rubber corrugated pipe are by the inwall drive fit of stationary ring one end, the longitudinal section of rotating seat is the step surface of band perpendicular to the end face of axle, the inwall of rotating seat and rubber corrugated pipe are by the outer wall drive fit of stationary ring one end, rubber corrugated pipe is a tight fit on the axle away from the inwall of stationary ring one end, the longitudinal section of spring seat is the step surface of band perpendicular to the end face of axle, spring seat inwall and rubber corrugated pipe are away from the outer wall drive fit of stationary ring one end, in the middle of the rubber corrugated pipe two perpendicular to the end face of axle respectively with rotating seat and spring seat perpendicular to two end faces of axle near, spring is against respectively on rotating seat and two end faces of spring seat perpendicular to axle, rotating ring one end face the effect of spring and stationary ring away from the end face of stationary ring cover near; The axial projections and the axial recess that cooperatively interact are arranged on the circumferential surface of rotating seat and spring seat.

Adopt its beneficial effect of present technique structure to be, the axial projections and the axial recess that cooperatively interact are arranged on the circumferential surface of rotating seat and spring seat, so during work, spring seat drives rotating seat and rotates, spring seat and rotating seat have been born main moment of torsion, and rubber corrugated pipe is born moment of torsion hardly, effectively avoid rubber corrugated pipe to tear, guaranteed sealing, prolonged working life, improve working efficiency, reduced cost.

Below in conjunction with the drawings and specific embodiments the utility model is described in further detail.

Description of drawings:

1. stationary ring covers among the figure, 2. stationary ring, 3. rotating ring, 4. rotating seat, 5. rubber corrugated pipe, 6. spring, 7. spring seat, 8. spool, the 9. pump housing, 10. axial projections, 11. axial recess.

Fig. 1 is the structure sectional view of the utility model permanent seal cooling mechanical seal device;

Fig. 2 is the partial structurtes sectional view of the utility model permanent seal cooling mechanical seal device.

Embodiment:

Fig. 1, the utility model permanent seal cooling mechanical seal device shown in Figure 2, by rotating ring 3, rubber corrugated pipe 5, rotating seat 4, the moving ring assembly that spring seat 7 and spring 6 formed and form by stationary ring 2 and stationary ring cover 1 static components of forming, stationary ring 2 overlaps 1 drive fit with stationary ring, the outer wall of stationary ring cover 1 and the inwall drive fit of the pump housing 9, rotating ring 3 outer walls and rubber corrugated pipe 5 are by the inwall drive fit of stationary ring 2 one ends, the longitudinal section of rotating seat 4 is the step surface of band perpendicular to the end face of axle 8, the inwall of rotating seat 4 and rubber corrugated pipe 5 are by the outer wall drive fit of stationary ring 2 one ends, rubber corrugated pipe 5 is a tight fit on the axle 8 away from the inwall of stationary ring 2 one ends, the longitudinal section of spring seat 7 is the step surface of band perpendicular to the end face of axle 8, spring seat 7 inwalls and rubber corrugated pipe 5 are away from the outer wall drive fit of stationary ring 2 one ends, in the middle of the rubber corrugated pipe 5 two perpendicular to the end face of axle 8 respectively with rotating seat 4 and spring seat 7 perpendicular to two end faces of axle 8 near, spring 6 is against respectively on rotating seat 4 and two end faces of spring seat 7 perpendicular to axle 8, rotating ring 3 one end faces the effect of spring 6 and stationary ring 2 away from the end face of stationary ring cover 1 near; The axial projections 10 and the axial recess 11 that cooperatively interact are arranged on the circumferential surface of rotating seat 4 and spring seat 7.Axial projections 10 and axial recess 11 be shaped as rectangular, rotating seat 4 is provided with axial recess 11, spring seat 7 is provided with axial projections 10.

Claims

1. permanent seal cooling mechanical seal device, form by moving ring assembly and static components, it is characterized in that: stationary ring (2) and stationary ring cover (1) drive fit, the inwall drive fit of the outer wall of stationary ring cover (1) and the pump housing (9), rotating ring (3) outer wall and rubber corrugated pipe (5) are by the inwall drive fit of stationary ring (2) one ends, the longitudinal section of rotating seat (4) is the step surface of band perpendicular to the end face of axle (8), the inwall of rotating seat (4) and rubber corrugated pipe (5) are by the outer wall drive fit of stationary ring (2) one ends, rubber corrugated pipe (5) is a tight fit on the axle (8) away from the inwall of stationary ring (2) one ends, the longitudinal section of spring seat (7) is the step surface of band perpendicular to the end face of axle (8), spring seat (7) inwall and rubber corrugated pipe (5) are away from the outer wall drive fit of stationary ring (2) one ends, in the middle of the rubber corrugated pipe (5) two perpendicular to the end face of axle (8) respectively with rotating seat (4) and spring seat (7) perpendicular to two end faces of axle (8) near, spring (6) is against respectively on rotating seat (4) and two end faces of spring seat (7) perpendicular to axle (8), rotating ring (3) one end faces the effect of spring (6) and stationary ring (2) away from the end face of stationary ring cover (1) near; The axial projections (10) and the axial recess (11) that cooperatively interact are arranged on the circumferential surface of rotating seat (4) and spring seat (7), axial projections (10) and axial recess (11) be shaped as rectangular, rotating seat (4) is provided with axial recess (11), and spring seat (7) is provided with axial projections (10).