JPS624323Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial application field] This invention is for high-pressure water injection to remove iron oxide (scale) generated on the surface of steel plates in strip or thick plate hot rolling lines of steel factories. This is related to the descaling header.

[Conventional technology]

Conventional descaling headers have 1st, 2nd, and 3rd descaling headers.
As shown in the figure, round short pipes h are attached to both ends of the descaling headers a and b, and the headers a and b are fixed by attaching the short pipes h to the pillars d standing on the base f. It was fixed by welding with a bracket e made of ordinary steel plate. In addition, the end of the short pipe h in the descaling water inflow direction is welded to the end of the inflow pipe g, and also to the column d and the base f, all of which have a welded structure.

[Problem that the invention attempts to solve]

The function of the descaling header greatly affects the quality of the rolled material (strip), so the relative positional relationship of the nozzles c is very important. For example, the positional relationship of the nozzles between the upper header and the lower header,
Alternatively, when multiple rows of headers are provided in the longitudinal direction of the strip, the positional relationship of the nozzles on the upstream and downstream sides becomes a problem.

That is, in one embodiment, nozzle c of upper header a
is located in the center between the nozzles c of the lower header b, or when multiple rows of headers are installed, the positions of the nozzles on the upstream and downstream sides are shifted.
Also, since the angle at which water is sprayed onto the strip will affect the quality of the strip, it is necessary to set the angle α to the vertical line at an angle of about 15 degrees as shown in FIG.

However, since the conventional descaling header has a welded structure, it takes a long time to center the position when replacing the header, and the descaling header is not consistent, which adversely affects the quality of the strip.

[Means for solving problems]

The present invention eliminates these drawbacks,
Its structure is such that an upper header and a lower header each having a plurality of nozzles oriented in a certain direction are attached to a pair of left and right frames, and the left and right frames are further connected by a pedestal. Short tubes are attached to both ends of the header, and the frame is provided with a recess into which the short tube portion is fitted, and the shape of the recess and the cross-sectional shape of the portion where the short tube fits into the recess are The header is formed into a square shape, and the header has a mechanism whose position can be adjusted in the width direction of the strip.

〔Example〕

Embodiments of the present invention will be described below based on the drawings of FIGS. 4 to 6.

The main bodies of the upper header 1 and lower header 2 are similar to those of the conventional upper header a and lower header b, but the short pipes 13 attached to both ends have a rectangular cross section. The recess 14 of the frame 5 into which both ends of the frame 5 are fitted is also square, and the short tube 13 is fitted into the recess 14 and fixed by the presser plate 10. Further, the left and right frames 5 are connected by a pedestal 7 and fixed as a pair to a base 6 with bolts 8. A flange 9 is provided at the end of the short pipe 13 in the descaling water inflow direction and at the end of the inflow pipe 12 to connect the header and the inflow pipe 12. In the case of the upper header 1, the lower header 2, and the multi-row header, the relative positional relationship of the nozzles 3 is important as described above, and as a mechanism for adjusting the position, a flat spacer 11 having a hole through which the short pipe 13 can be inserted is used. The spacer 11 is sandwiched between the frame 5 and the short tube 13, the position of the nozzle 3 is adjusted in the width direction of the strip, and the header is fixed to the frame by tightening the bolt 15.

〔effect〕

Since the present invention is a descaling header constructed as described above, when manufacturing the headers 1 and 2, the nozzle 3 is inclined at an angle α of 15 degrees with respect to the side of the short pipe in the vertical direction. If you keep it in place, when replacing it, just fit the short pipe 13 into the recess 14.
The angle of inclination is automatically determined by the degree of inclination, and the positional shift is also automatically determined by the spacer 11.

Further, since the frame mount 7 is fixed to the base 6 by bolt tightening, when replacing it, it can be easily removed by separating the bolts 8 and the flange 9 and pulling it out with a crane using the hanging ring 4.

Therefore, work can be done outside the rolling line, making assembly of the headers 1 and 2 and cleaning of the nozzle 3 extremely easy. Also, if you keep one set of spare headers, you can clean the nozzles, which is carried out every seven days, with plenty of time to spare, so you can reliably correct any defective parts.

As mentioned above, the header of the present invention is the best header for producing steel plates of good quality.

[Brief explanation of the drawing]

FIGS. 1, 2, and 3 are diagrams illustrating conventional descaling headers. 4, 5, and 6 are diagrams for explaining the descaling header of the present invention.
1 and 4 are front views, 2 and 5 are side views, and 3 and 6 are arrow views A to A and B to B. a, 1... Upper header, b, 2... Lower header, c, 3... Nozzle, d... Support, e... Bracket, f, 6... Base, g... Inflow pipe, h, 1
3...Short pipe, 4...Hanging ring, 5...Frame,
7... Frame, 8, 15... Bolt, 9... Flange, 10... Holding plate, 11, 11'... Spacer, 14... Recess.

Claims (1)

[Claims for Utility Model Registration] 1. A device in which an upper header and a lower header each having a plurality of nozzles oriented in a certain direction are attached to a pair of left and right frames, and the left and right frames are connected by a frame. In the scaling header, short pipes are attached to both ends of the header, and the frame is provided with a recess into which the short pipe part is fitted, and the shape of the recess is such that the short pipe fits into the recess. 1. A descaling header, characterized in that the cross-sectional shape of the section is formed into a square shape, and the header is provided with a mechanism that allows the position of the header to be adjusted in the width direction of the strip. 2 Claims for registration of a utility model characterized in that the mechanism for adjusting the position of the header in the width direction of the strip is a mechanism in which the end of the short tube of the header has a bolt tightening structure and a spacer is inserted into the short tube. The descaling header described in item 1.