CN2923046Y

CN2923046Y - Nozzle for rod passing-water cooling system

Info

Publication number: CN2923046Y
Application number: CN 200620110763
Authority: CN
Inventors: 林顺洪; 朱新才; 李长江; 周雄; 肖大志; 丁又青
Original assignee: Chongqing University of Science and Technology
Current assignee: Chongqing University of Science and Technology
Priority date: 2006-06-13
Filing date: 2006-06-13
Publication date: 2007-07-18
Anticipated expiration: 2016-06-13

Abstract

The utility model relates to a nozzle device used in a water piercing cooling system of steel bars that is composed of a shell (8), a guide taper (7), and a guide taper sleeve (10); wherein, the shell (8) is provided with a ring-shaped internal chamber (6); the surface of the guide taper (7) is provided with a guide flute (7a) that is spread evenly in the circumference; a water inlet end of the guide flute (7a) is communicated with the ring-shaped internal chamber (6); the guide flute (7a) is a straight flute that extends in the isoline direction of the taper surface; and the section area of the guide flute (7a) is reduced from the outer inlet end to the water outlet end. The structure of the guide flute of the utility model is more reasonable; the steel bars have a good cooling effect with even stress and stable operation; the muddy circulating water of a rolling mill can be applied as cooling water; besides, the nozzle is unlikely to be blocked.

Description

Bar is worn the water cooling system spray nozzle device

Technical field

The utility model relates to nozzle, specifically, relates to materials processing manufacturing field bar and wears the used nozzle of water cooling system.

Background technology

It is that a cover is forced cooling and online heat treated equipment to the high temperature bar after rolling that bar is worn water cooling system, and it can effectively improve the comprehensive mechanical performance that rolls the back bar, and nozzle is that bar is worn the critical component in the water cooling system.At present, bar is worn the used nozzle of water cooling system annular spray formula and spiral two kinds of versions.

Annular spray formula nozzle mainly is made of inner conical drogue and external conical sleeve, forms the annulus between inner conical drogue and the external conical sleeve, and cooling water sprays at a high speed through this ring-like slit and impacts the bar surface.Cooling water squeezes when being pooled to the rolled piece surface mutually, causes the injection kinetic energy rejection big, and cooling effect is poor; In order to guarantee the cooling water speed in when ejection, ring-like slit must be done lessly, so cooling water can only adopt water purification, during as cooling water, needs to be equipped with water correction plant with the milling train turbid circulating water, and investment is big, the operation expense height.Even now, the impurity in the water also still are easy plug nozzle.

Spiral nozzle mainly is made of deflection cone and water conservancy diversion tapered sleeve, and the conical surface of deflection cone is provided with arc convergence guiding gutter, and guiding gutter distributes on the whole conical surface twist.Cooling water sprays at a high speed and impacts the bar surface through guiding gutter, and it is big that the cooling water of this nozzle sprays kinetic energy.Because cooling water flow acts on bar section tangential direction, produces twisting resistance on bar, cause bar to produce torsional deflection.Because the quantity of guiding gutter is on the low side, cause the bar inhomogeneous cooling even, the glacing flatness of bar does not reach national standard.Above-mentioned shortcoming makes the bar percent defective wear after the water cooling significantly increase, and therefore, spiral nozzle does not have practical value in production reality.

The utility model content

Problem to be solved in the utility model provide a kind of cooling evenly, intensity of cooling is big, bar easy to adjust is installed worn the water cooling system spray nozzle device, this spray nozzle device can adopt does not have the milling train turbid circulating water that purifies as cooling medium, and difficult obstruction.

For solving the problems of the technologies described above, bar of the present utility model is worn the water cooling system spray nozzle device, contain housing, deflection cone and water conservancy diversion tapered sleeve, annular cavity is arranged on the housing, the conical surface upper edge of deflection cone circumferentially is evenly equipped with guiding gutter, the water inlet end of guiding gutter communicates with annular cavity, and guiding gutter is the straight-line groove that extends along the plain line direction of the conical surface, and the cross section of guiding gutter reduces from the water inlet end to the water side gradually.

After adopting said structure, because the cross section of guiding gutter reduces from the water inlet end to the water side gradually, make and produce acceleration effect when current leave nozzle, not only strengthened the injection kinetic energy of current, and the self-movement separately of each water stream, cooling water does not have the phase mutual interference before arriving the bar surface, help keeping the injection kinetic energy of the iron filings particle carried secretly in the current, effectively break up the bar surface because the steam blanket that " film boiling " forms has improved cooling effect significantly.Guiding gutter is a straight-line groove, making a concerted effort of the current that from guiding gutter, spray along the bar axis direction, bar moved in wearing the water cooling line produce traction effect, bar can pass through smoothly, can not produce stifled steel accident, can not produce along the torsion of bar circumferencial direction simultaneously, promptly bar can not produce torsional deflection, help guaranteeing bar wear on the water cooling line stressed evenly, operate steadily.

The beneficial effects of the utility model are: the structure of guiding gutter is more reasonable, and bar is good cooling results not only, and stressed even, operates steadily, even adopt the milling train turbid circulating water also can not stop up as the cooling water nozzle.

Description of drawings

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

Fig. 2 is the structural representation of deflection cone 7 among Fig. 1;

Fig. 3 is that the A of Fig. 2 is to view;

Fig. 4 is the B-B cutaway view of Fig. 3.

The specific embodiment

Below in conjunction with the specific embodiment and accompanying drawing the utility model is described in further detail.

As Fig. 1, Fig. 2 and shown in Figure 3, bar of the present utility model is worn the water cooling system spray nozzle device, have housing 8, deflection cone 7 and water conservancy diversion tapered sleeve 10, annular cavity 6 is arranged on the housing 8, the conical surface upper edge of deflection cone 7 circumferentially is evenly equipped with guiding gutter 7a, the water inlet end of guiding gutter 7a communicates with annular cavity 6, and guiding gutter 7a is the straight-line groove that extends along the plain line direction of the conical surface, and the cross section of guiding gutter 7a reduces from the water inlet end to the water side gradually.

The bottom that Fig. 4 illustrates guiding gutter 7a is semicircular arc, make current little through the out-of-date resistance that is subjected to, the bore of guiding gutter 7a water side is 8～10mm, therefore allow to contain in the cooling water bigger iron filings particle, thereby can directly adopt the milling train turbid circulating water as cooling water, do not need to introduce in addition water purification or be equipped with water correction plant, reduced operating cost and maintenance cost.

In Fig. 1, deflection cone 7 is installed on the deflection cone body 2, and deflection cone body 2 thread connection are on housing 8, and the outer end thread connection of deflection cone body 2 has inlet to lead mouth 1, adopt deflection cone 7, deflection cone body 2 and inlet to lead the combining structure of mouth 1, be convenient to make and loading and unloading.Number in the figure 3 is a locking nut, and 4 is anti-wearing liner, and 5 and 9 is sealing ring.

During work, the milling train turbid circulating water is tangentially introduced annular cavity 6, again by the ejection of the guiding gutter 7a on the deflection cone 7, impacts the surface of bar.For preventing the iron filings particle plug nozzle of milling train turbid circulating water, guiding gutter 7a also can do slightly largerly, as long as guarantee the iron filings grain graininess less than guiding gutter 7a water side bore, nozzle just can not stop up.Simultaneously, for guaranteeing the cooling of bar section evenly, on the conical surface of deflection cone 7, arranged more guiding gutter 7a.The kinetic energy of iron filings particle can break up bar surface " steam blanket " in the milling train turbid circulating water, thereby effectively improves the cooling effect of bar, and the bar comprehensive mechanical performance that this spray nozzle device of process is worn after the water cooling reaches more than the III level.

Claims

1, a kind of bar is worn the water cooling system spray nozzle device, comprise housing (8), deflection cone (7) and water conservancy diversion tapered sleeve (10), annular cavity (6) is arranged on the housing (8), the conical surface upper edge of deflection cone (7) circumferentially is evenly equipped with guiding gutter (7a), the water inlet end of guiding gutter (7a) communicates with annular cavity (6), it is characterized in that: the straight-line groove of described guiding gutter (7a) for extending along the plain line direction of the conical surface, the cross section of guiding gutter (7a) reduces from the water inlet end to the water side gradually.

2, bar according to claim 1 is worn the water cooling system spray nozzle device, it is characterized in that: the bottom of described guiding gutter (7a) is semicircular arc, and the bore of guiding gutter (7a) water side is 8～10mm.

3, bar according to claim 1 is worn the water cooling system spray nozzle device, it is characterized in that: described deflection cone (7) is installed on the deflection cone body (2), deflection cone body (2) thread connection is on housing (8), and the outer end thread connection of deflection cone body (2) has inlet to lead mouth (1).