CN201632609U

CN201632609U - Water-cooling rotary joint used for continuous casting rollers

Info

Publication number: CN201632609U
Application number: CN2010200625151U
Authority: CN
Inventors: 张文全
Original assignee: Maanshan Iron and Steel Co Ltd
Current assignee: Maanshan Iron and Steel Co Ltd
Priority date: 2010-01-15
Filing date: 2010-01-15
Publication date: 2010-11-17
Anticipated expiration: 2020-01-15

Abstract

The utility model discloses a water-cooling rotary joint used for continuous casting rollers, which has the effects of abrasion resistance and high sealing accuracy. The water-cooling rotary joint comprises a square elbow (1), a hollow rotating shaft (2), a flange shaft sleeve (4) and a graphitic shaft sleeve (9), wherein one end of the hollow rotating shaft (2) is tightly fixed in the square elbow (1) through bolts, and the other end sticks into the flange shaft sleeve (4); the graphitic shaft sleeve (9) matched with the hollow rotating shaft (2) and the flange shaft sleeve (4) is mounted in the radial direction between the hollow rotating shaft (2) and the flange shaft sleeve (4); the front end of the graphitic shaft sleeve (9) is pressed on the inner end surface of the flange shaft sleeve (4), and the rear end thereof adopts an inclined surface; and the hollow rotating shaft adopts a spherical surface as the contact surface matched with the inclined surface of the graphitic shaft sleeve. The two matched surfaces are compressed tightly through a spring, so as to form a mechanical seal, through which abrasion on end surfaces can be compensated automatically, and the effect of reliable sealing is achieved; at the same time the cooling effect of the continuous casting rollers is improved, the service life of a roller is prolonged, and the equipment cost is reduced.

Description

Continuous casting roller water-cooled swivel joint

Technical field

The utility model relates to a kind of continuous casting roller water-cooled swivel joint.

Background technology

The continuous casting roller with the water-cooled swivel joint in use, these two of hollow rotating shaft and graphite bushings are in contact with one another and do in relative rotation the sealing quality of part and be directly connected to swivel joint and whether drainage can occur.And the hermetically-sealed construction of the swivel joint that uses at present is all not so good, leaks easily.

The patent No. is to disclose a kind of list/two-way swivel joint in the utility model patent of ZL200420061534, its structure is more similar to structure of the present utility model, but the movable sealing of hollow rotating shaft and two part mating surfaces of graphite bushing is to adopt O type rubber seal.Because the O type rubber seal sealed precision that causes easy to wear is poor, and the material of itself makes it easily aging, and heat-resisting quantity is poor, and service life is short, causes swivel joint drainage will occur after use a period of time, makes the cooling effect variation of roller.

Summary of the invention

Problem to be solved in the utility model provides a kind of wear-resistant, continuous casting roller water-cooled swivel joint that sealed precision is high.

Continuous casting roller water-cooled swivel joint of the present utility model comprises elbow bend, hollow rotating shaft, flange shaft sleeve, graphite bushing; One end of hollow rotating shaft is fastened in the elbow bend by screw, and the other end extend in the flange shaft sleeve, between hollow rotating shaft, flange shaft sleeve the graphite bushing that all matches with both is housed radially; The endoporus of hollow rotating shaft is a shoulder hole, it stretches into the interior internal diameter of flange shaft sleeve greater than other end internal diameter, in the big endoporus of hollow rotating shaft, spring is housed, the left side of the floating ring that spring is matched with the hollow rotating shaft inner surface compresses, the shaft block ring that is contained in the flange shaft sleeve inside groove is pressed on stationary ring on the right side of floating ring, it is characterized in that: the front end of graphite bushing is pressed on the inner face of flange shaft sleeve, and its rear end is an inclined-plane; The contact-making surface that hollow rotating shaft matches with the inclined-plane of graphite bushing is a sphere.

An inclined-plane is processed in the rear end of graphite bushing of the present utility model, and the contact-making surface that matches with the inclined-plane of graphite bushing on the hollow rotating shaft is processed as a sphere, and these two faces merga pass spring compression that matches has formed one mechanical seal.This seal form can compensate end wear automatically, thereby sealing is reliable, has high temperature resistantly, anti-aging simultaneously again, and advantages such as long service life have improved the cooling effect of continuous casting roller, and the life-span of roller is prolonged, and cost of equipment reduces.

Description of drawings

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

Fig. 1 is a structural representation of the present utility model;

Fig. 2 is the enlarged diagram at A place among Fig. 1;

Fig. 3 is the structural representation of the swivel joint of prior art;

Fig. 4 is the enlarged diagram at B place among Fig. 3;

Fig. 5 is the assembling schematic diagram of the utility model and roller.

The specific embodiment

From Fig. 1, Fig. 2 as can be known, continuous casting roller water-cooled swivel joint comprises elbow bend 1, hollow rotating shaft 2, flange shaft sleeve 4, graphite bushing 9; One end of hollow rotating shaft 2 is fastened in the elbow bend 1 by screw 3, and the other end extend in the flange shaft sleeve 4, the graphite bushing 9 that radially being equipped with between hollow rotating shaft 2, flange shaft sleeve 4 all matched with both; The endoporus of hollow rotating shaft 2 is a shoulder hole, it stretches into internal diameter in the flange shaft sleeve 4 greater than other end internal diameter, in the big endoporus of hollow rotating shaft 2, spring 5 is housed, the left side of the floating ring 6 that spring 5 is matched with hollow rotating shaft 2 inner surfaces compresses, the shaft block ring 8 that is contained in flange shaft sleeve 4 inside grooves is pressed on stationary ring 7 on the right side of floating ring 6, the front end of graphite bushing 9 is pressed on the inner face of flange shaft sleeve 4, and its rear end is an inclined-plane; The contact-making surface that hollow rotating shaft 2 matches with the inclined-plane of graphite bushing 9 is a sphere.

In order to increase the reliability of sealing, as a kind of optimal way of the present utility model, two O RunddichtringOs 10 are housed at the mating surface of hollow rotating shaft 2 and elbow bend 1, at the mating surface of hollow rotating shaft 2 and graphite bushing 9 an O RunddichtringO 11 is housed.Wherein, flange shaft sleeve 4 seals with glue with the mating surface of graphite bushing 9, prevents to leak.

Because the inclined-plane of graphite bushing 9 rear ends matches with the sphere on the hollow rotating shaft 2, and by spring 5 sphere of hollow rotating shaft 2 is pressed on the conical surface of graphite bushing 9 and forms one mechanical seal, thereby water flowing pressure can reach 1.5MP and not seep water when hollow rotating shaft 2 and graphite bushing 9 were relatively rotated, and was far longer than the water flowing pressure of 1MP of the swivel joint of present use.

When using the utility model, the flange shaft sleeve 4 of swivel joint is inserted and secured in the limbers of roller 14, flange shaft sleeve 4 is established axial seal 12, radial seal 13 together respectively with the position that roller 14 contacts; Water supply hose 15, backwater flexible pipe 16 are inserted the female end of the elbow bend 1 in the swivel joint respectively, make recirculated cooling water, to reach to the continuous effect of cooling of roller by swivel joint turnover roller 14 inside.When work, flange shaft sleeve 4, graphite bushing 9, stationary ring 7, shaft block ring 8 form an integral body with roller 14 and rotate simultaneously when working, and other part does not rotate.

Claims

1. a continuous casting roller water-cooled swivel joint comprises elbow bend (1), hollow rotating shaft (2), flange shaft sleeve (4), graphite bushing (9); One end of hollow rotating shaft (2) is fastened in the elbow bend (1) by screw (3), and the other end extend in the flange shaft sleeve (4), the graphite bushing (9) that radially being equipped with between hollow rotating shaft (2), flange shaft sleeve (4) all matched with both; The endoporus of hollow rotating shaft (2) is a shoulder hole, it stretches into the interior internal diameter of flange shaft sleeve (4) greater than other end internal diameter, spring (5) is housed in the big endoporus of hollow rotating shaft (2), the left side of the floating ring (6) that spring (5) is matched with hollow rotating shaft (2) inner surface compresses, the shaft block ring (8) that is contained in flange shaft sleeve (4) inside groove is pressed on stationary ring (7) on the right side of floating ring (6), it is characterized in that: the front end of graphite bushing (9) is pressed on the inner face of flange shaft sleeve (4), and its rear end is an inclined-plane; Hollow rotating shaft (2) is a sphere with the contact-making surface that the inclined-plane of graphite bushing (9) matches.

2. swivel joint according to claim 1 is characterized in that: described hollow rotating shaft (2) has two O RunddichtringOs (10) with the mating surface of elbow bend (1).

3. according to claim 1,2 described swivel joints, it is characterized in that: described hollow rotating shaft (2) has an O RunddichtringO (11) with the mating surface of graphite bushing (9).