CN102425669A

CN102425669A - Novel high-temperature sealing device

Info

Publication number: CN102425669A
Application number: CN2011104037139A
Authority: CN
Inventors: 贺成玉; 陈新平; 徐靖; 李安平
Original assignee: Nanjing Kisen International Engineering Co Ltd
Current assignee: Nanjing Kisen International Engineering Co Ltd
Priority date: 2011-12-08
Filing date: 2011-12-08
Publication date: 2012-04-25

Abstract

The invention relates to a novel high-temperature sealing device. The novel high-temperature sealing device comprises sealing boxes (1), hard antifriction lubricating materials (2), spring guide pipes (3), springs (4) and pressing plates (5); each sealing box comprises a side wall (1-1) and a bottom wall (1-2) and the side wall and the bottom wall form a cavity (1-3); the hard antifriction lubricating materials, the spring guide pipes, the springs, and the pressing plates are all arranged in the cavity; the bottom wall is connected with the spring guide pipes, one end of each spring is fixed on the bottom wall and is positioned in the spring guide pipe, and the other end of each spring is contacted with the pressing plate; each pressing plate is provided with a groove (5-1), the hard antifriction lubricating materials are arranged on the groove, and are directly contacted with movement pieces (6); a gap is reserved between the pressing plate and the side wall; and the side wall is provided with an air port (1-4).

Description

A kind of new type high temperature seal arrangement

Technical field

The present invention relates to a kind of new type high temperature seal arrangement, relate in particular to a kind of seal arrangement that is used for the pushing device of cooling machine front end.

Background technique

Movement parts under the hot environment to external world and the seal arrangement between the high-temperature area, has proposed very big requirement.Not only require good sealing effect, the life-span of seal arrangement is permanent, and prevents the particle ejection of high-temperature area, and the person and equipment are threatened.Cooling machine front end pushing device commonly used for example, it is mainly used in destroys inner " snowman " who piles up of cooling machine.The inner abominable operating mode of cooling machine---temperature is high, dust granules is many, material glues etc., and the sealing of push pedal place of pushing device has been proposed higher requirement.Traditional single seal form sealing effect is difficult to reach the best, sealing medium short shortcoming in working life highlights, and has had a strong impact on the whole usability of pushing device.

Summary of the invention

The invention provides a kind of good sealing effect to above problem, long service life, and have the new type high temperature seal arrangement of cooling action.

To the invention provides a kind of new type high temperature seal arrangement in order overcoming the above problems, to comprise sealed letter, hard antifriction lubriation material, spring guide, spring, pressing plate; Described sealed letter comprises sidewall and diapire, and sidewall and diapire constitute cavity; Hard antifriction lubriation material, spring guide, spring, pressing plate all are arranged in the cavity; Be connected with spring guide on the low wall, spring one end is fixed on the low wall and is positioned at spring guide, and the other end contacts with pressing plate; Pressing plate is provided with groove, and hard antifriction lubriation material is installed on the groove, and hard antifriction lubriation material directly contacts with movement parts; Gapped between pressing plate and sidewall; On sidewall, be provided with gas interface.

Beneficial effect: the present invention is merged by mechanical seal and gas with being sealed with machine, and compact structure is easy to use.The mechanical seal of spring compression with the partition wall that the high pressure draught that is directed to forms, is combined, and has greatly strengthened the effect of sealing.In the course of the work, high pressure draught is to the purging on movement parts surface, makes movement parts and any surface finish that hard antifriction lubriation material contacts, and guaranteed the effect and the life-span of mechanical seal.Simultaneously, during to-and-fro motion, temperature is higher inside and outside high-temperature area for movement parts, and cooling blast gets in the sealed letter, and two bundles about being divided into by hard antifriction lubriation material carry out brute force to the movement parts surface and jet, and have played cooling action.The high pressure cooling blast is to the gas pressure of pressing plate, and deficiency that can the counterbalance spring impacting force is particularly when the consumption of hard antifriction lubriation material is bigger.This sealing unit is simple in structure, and is strong to adaptability such as the width of movement parts, thickness, angles, and the movement parts of high temperature is had good sealing effect.

Description of drawings

Fig. 1 is a schematic representation of the present invention;

Fig. 2 is the partial sectional view of the A-A of Fig. 1.

Embodiment

Below in conjunction with accompanying drawing the present invention is done further description.

Like Fig. 1, shown in 2, a kind of new type high temperature seal arrangement comprises sealed letter 1, hard antifriction lubriation material 2, spring guide 3, spring 4, pressing plate 5;

Described sealed letter 1 comprises sidewall 1-1 and diapire 1-2, and sidewall 1-1 and diapire 1-2 constitute cavity 1-3; Hard antifriction lubriation material 2, spring guide 3, spring 4, pressing plate 5 all are arranged in the cavity 1-3; Be connected with spring guide 3 on the low wall 1-2, spring 4 one ends are fixed on the low wall 1-2 and are positioned at spring guide 3, and the other end contacts with pressing plate 5; Pressing plate 5 is provided with groove 5-1, and hard antifriction lubriation material 2 is installed on the groove 5-1, and hard antifriction lubriation material 2 directly contacts with movement parts 6; Gapped between pressing plate 5 and sidewall 1-1; On sidewall 1-1, be provided with gas interface 1-4.

Cavity 1-3 satisfies the installation of hard antifriction lubriation material 2, spring guide 3, spring 4 and pressing plate 5 on the one hand, on the other hand, satisfies passing through smoothly of high pressure cooling blast;

Said hard antifriction lubriation material 2 directly contacts with movement parts 6, relies on compressing of spring 4, makes hard antifriction lubriation material 2 and movement parts 6 fit, and reaches sealing effect; Said spring guide 3 is fixed in the sealed letter 1, is used for the fixing and leading role to spring 4; Said spring 4 acts on the pressing plate, makes hard antifriction lubriation material 2 can be in impaction state always; Said pressing plate 5 can make and the active force of spring 4 compress hard antifriction lubriation material 2 equably that in addition, 5 pairs of hard antifriction of pressing plate lubriation material 2 also plays fixation, guarantees that simultaneously the high pressure cooling blast can pass through smoothly; Relative position between this seal arrangement and movement parts, the housing is decided according to demand, and the connection form between the housing has welding, bolt etc.

The present invention confirms outside installation dimension according to the position of movement parts and housing.At first, hard antifriction lubriation material 2, spring guide 3, spring 4, pressing plate 5 are installed on the sealed letter 1, guarantee firmly.Then, the seal arrangement that assembles is fixed on the housing 7; Last at the gas interface 1-4 place of sealed letter 1, insert high pressure cooling airflow line 8.When movement parts realized to-and-fro motion, the high pressure cooling blast need continue supply.The hard antifriction lubriation material 2 that spring 4 compresses is fitted with the movement parts surface, plays the effect of mechanical seal; The air-flow of high pressure forms gas curtain at the two ends of hard antifriction lubriation material 2, plays the gas seal effect; The purging of high pressure cooling blast has been blocked external impurities and inner foreign material, gets into the faying surface of hard antifriction lubriation material 2 and movement parts, destroys the applying density; Cooling blast plays cooling action to the purging on movement parts surface simultaneously; Pressurized gas can be after 2 wearing and tearing of hard antifriction lubriation material to the gas pressure of the upper surface of pressing plate 5, and the spring force of counterbalance spring 4 is not enough effectively.

In sum, this elevated-temperature seal device, good sealing effect, simple and compact for structure, easy for installation, adaptability is strong.Realized that mechanical seal and gas are sealed with the combination of machine, reached good sealing effect the movement parts of high-temperature area.The cost-effective while, also improved the integrity of equipment.

The above is merely the preferred embodiments of the present invention, is not restricted to the present invention, and for a person skilled in the art, the present invention can have various changes and variation.All within spirit of the present invention and principle, any modification of being done, be equal to replacement, improvement etc., all should be included within the claim scope of the present invention.

Claims

1. a new type high temperature seal arrangement is characterized in that: comprise sealed letter (1), hard antifriction lubriation material (2), spring guide (3), spring (4), pressing plate (5); Described sealed letter (1) comprises sidewall (1-1) and diapire (1-2), and sidewall (1-1) and diapire (1-2) constitute cavity (1-3); Hard antifriction lubriation material (2), spring guide (3), spring (4), pressing plate (5) all are arranged in the cavity (1-3); Be connected with spring guide (3) on the low wall (1-2), spring (4) one ends are fixed on the low wall (1-2) and are positioned at spring guide (3), and the other end contacts with pressing plate (5); Pressing plate (5) is provided with groove (5-1), and hard antifriction lubriation material (2) is installed on the groove (5-1), and hard antifriction lubriation material (2) directly contacts with movement parts (6); Gapped between pressing plate (5) and sidewall (1-1); On sidewall (1-1), be provided with gas interface (1-4).