JPS6340248Y2 - - Google Patents

Description

[Detailed description of the invention] This invention is based on the idea that the cooling water of a rolling mill for round steel (wire rod) and square steel that is continuously rolled is attached to and guided to the rolled material, and the attached equipment (thickness gauge, This relates to a rolled material guide whose purpose is to prevent water from entering measurement equipment such as eddy current flaw detectors.

Conventionally, as shown in Fig. 1, a nozzle-type spray E was installed on the trumpet-shaped exit guide D of a rolling mill (roll roll) A or on the entrance guide F side of attached devices B and C such as measuring instruments on the rolling line. However, the cooling water that was attracted to the rolled material was blocked.
Recently, as the speed of rolling materials has increased, it has become difficult to drain water.
In addition, there is a lot of scattering, and since attached equipment that is extremely sensitive to water is installed on the rolling pass line, methods to prevent this have been an issue, but it is difficult to completely prevent it, and it can cause trouble to the electronic equipment of the attached equipment. was. Further, these conventional methods have the disadvantage that several sets of nozzles are provided on the line, but the space is large, and as shown in FIG. 2, the nozzles are of the type that spray directly onto the rolled material in a linear manner.

The purpose of this invention is to improve these conventional problems and provide a water-sealed guide that can remove the cooling water that adheres to and is attracted to the rolled material during hot rolling and cold drawing in the guiding guide. That is.

To explain the drawings below, a tubular guide 2 having a tapered guide hole 1 with a large inner diameter on the inlet side has a thick outlet end, and a hollow annular interior with an inlet 3 protruding locally. header 4
is built in, and compressed air or steam is injected into the rolled material in the guide guide 2 from several equally divided parts of the internal header toward one surface of the guide hole, and a jet vortex is generated toward the inlet side. A plurality of nozzles 5, 5, . It has a water seal type guide configuration in which an air supply pipe 7 for gas such as compressed air or steam is connected to an air inlet 3 protruding from the outer surface of the induction guide 2 of the internal header 4 via a solenoid valve 6. , this guiding guide 2 is replaced with a spray type nozzle and a trumpet-shaped guide as shown in FIG. The center is placed on the entrance side of devices B and C.

Further, as the gas having an appropriate pressure to be ejected from the nozzles 5 provided in the induction guide 2, a nonflammable gas such as nitrogen gas or argon gas may be used instead of the compressed air or steam.

According to such a configuration, the rolled material 8 is rolled in the rolling mill A.
It passes through the equipment and is transferred through the guidance guide 2 installed at the entrance side of the outlet and each attached device (measuring equipment such as thickness gauge, eddy current flaw detector, etc.) B and C on the rolling line, At this time, compressed air or steam is blown into the inlet 3 of the induction guide 2 by operating the solenoid valve 6, enters the internal header 4, and connects with the header to a plurality of nozzles bored in the guide wall 2'. The nozzles 5, 5... are injected toward the rolled material 8 traveling inside the guide hole 1, and the nozzles 5, 5... each have an angle with respect to the center line of the tube axis, and the injected gas such as compressed air or steam is ejected from the nozzles 5, 5... generates a vortex toward the inlet side in the induction guide 2 as shown by the dotted line, and the strength of the vortex can be adjusted by changing the mutual angle of the nozzles 5, 5, and by this jet vortex, At the same time, the cooling water that adheres to and is attracted to the rolled material 8 is blown away, and the guidance guide 2
Outside air is introduced into the guide guide 2 from the exit side opening of the guide 2, and cooling water, scale, etc. that adhere to and scatter on the rolled material are continuously removed in the guide guide 2 toward the inlet side in conjunction with the progress of the rolled material. It is something that can be done.

According to the water seal type guide of the present invention, at a rolling speed of 20 m/sec, water can be completely drained with 1 to 3 pieces, and at low gas pressures such as compressed air, water can be completely drained with 1 to 3 pieces.
The gas is ejected from each nozzle 5 to the guide hole 1 at ~2Kg/cm ² G, and the expansion during diffusion is used to make the gas into a rapid vortex (swirling flow), causing the gas to spiral around the surface of the rolled material. By doing so, the speed of the rolled material (15m/
water attached to the rolled material regardless of the speed (higher than sec),
Accompanying water can be removed.

As explained above, the water seal type guide according to this invention uses a plurality of nozzles that open at an angle toward the inside of the guide hole from the internal header built around the exit end of the guide for guiding rolled material. Since it is designed to blow out a gas such as air or steam, when the gas such as compressed air or steam goes from the outlet side of the rolling material guide to the inlet side, a jet vortex is created in the opposite direction to the traveling direction of the rolled material. The cooling water, scale, etc. that are attached to the rolled material are blown away backwards, and the cooling water and scale can be continuously removed regardless of the speed of the rolled material. Like the trumpet-shaped static guide, it can also be used as a rolled material guiding guide to make the arrangement compact regardless of the speed of the rolled material.Moreover, since the jet vortex draws outside air into the guide from the outlet opening, heat is reduced. Completely seals without allowing water, scale, etc. that adhere to or guide the material during rolling and cold drawing to exit the exit side, and prevents water and scale from entering precision measuring equipment and attached equipment on the rolling line. The present invention has the advantage that the disadvantages of the conventional art, such as the need for a large space, can be easily overcome with an inexpensive structure.

[Brief explanation of the drawing]

Figure 1 is a schematic explanatory diagram showing the conventional rolling line equipment for round steel and square steel rolled materials, and Figure 2 a, b, and c are the
FIG. 3 is a partially cut away perspective view showing the water seal type guide according to this invention installed on the rolling line. FIG. 4 is a sectional view of the main part, and FIG. 5 is a front view. 1... Guidance hole, 2... Guidance guide, 2'... Guide wall, 3... Inlet, 4... Internal header, 5
... Nozzle, 6 ... Solenoid valve, 7 ... Air supply piping, 8
...Rolled material.

Claims (1)

[Scope of utility model registration request] A hollow annular internal header 4 provided with an air inlet 3 is built into the outlet end of a tubular guiding guide 2 having a rolled material guiding hole 1 with a large tapered entrance side.
A compressed air or steam supply pipe 7 is connected to the inlet 3 of the header via a solenoid valve 6, and the internal header 4
The guide wall is arranged so that compressed air or steam is injected from several equally divided locations toward the guide hole surface in the direction opposite to the traveling direction of the rolled material within the guide guide 2, and generates a jet vortex toward the inlet side. A water seal type guide for round steel and rolled square steel material, which is provided with a plurality of nozzles 5 opening at an angle at 2'.