JPH0322717Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a lining device for metal melting equipment.

[Conventional technology and its problems]

Facilities and equipment that house molten metal, such as converters, ladles, and electric furnaces, are lined with monolithic refractories.
However, as the wear and tear progresses with use,
It is necessary to repair the lining at regular intervals.

Conventionally, the conventional method for this repair is to force-feed monolithic refractories from a tank or the like into a hose using compressed air, and then have a worker hold a long spray pipe attached to the end of the hose and insert it into the target equipment. However, the work involved supporting and moving heavy spray pipes for long periods of time while being exposed to high heat, which caused problems in terms of workability and safety.

As a way to improve this, manipulator-type or robot-type lining equipment is available, but the structure is extremely large, complicated, and expensive.
It requires a dedicated operator and a running track and waiting space. Therefore, the area for picking is limited, and it cannot be used in the existing equipment of small and medium-sized factories where there is little space in front of the furnace, resulting in a lack of versatility.

[Means for solving problems]

This invention was devised through research to solve the above-mentioned problems, and its purpose is to have a simple and compact structure that can be installed at sites with little space in front of the furnace, and can be used for lining immediately. An object of the present invention is to provide an inexpensive lining device for metal melting equipment that can be mechanically and easily constructed.

To achieve this objective, the present invention includes a base, a pedestal that is rotatably erected on the base, a frame that is tiltably supported on the pedestal, and a spray pipe for spraying refractory material. A spray pipe feeding mechanism disposed on a frame for moving the spray pipe in the axial direction and a spray pipe rotation mechanism for rotating the spray pipe around the axis, the spray pipe feeding mechanism The spray pipe rotation mechanism is equipped with a feeding drive roller whose roller axis intersects with the longitudinal direction of the spray pipe, a driven roller facing this, and a cylinder for raising and lowering the driven roller 7. The structure includes a driving roller for rotation parallel to the direction, a driven roller facing the driving roller, and a cylinder for lifting and lowering the driven roller. It is connected to a control system that sometimes leaves the other cylinder inactive.

〔Example〕

Embodiments of the present invention will be described below with reference to the accompanying drawings.

Figures 1 to 4 show an embodiment of the lining device for metal melting equipment according to the present invention.
is a base, which is placed on a base 100 close to equipment A to be lined, such as a converter. The one shown is a stationary type, but it may also be a mobile type by being equipped with a roller or the like.

Reference numeral 2 denotes a pedestal erected on the base 1, which has a turntable 20 at the bottom and can turn around an axis perpendicular to the base. As the turning mechanism, a turning motor 21 having a drive gear 23 that meshes with a gear 22 on the outer periphery of the turntable may be provided on the base.

Reference numeral 3 denotes a frame connected to the upper area of the pedestal 2 with a pivot 31, and is supported by a rod of a power cylinder 32 attached to the turntable 20, and by the operation of the power cylinder 32, the frame can be rotated in the height direction using the pivot as a fulcrum. It can be tilted freely.

4 is a spray pipe feeding mechanism, and 5 is a spray pipe rotation mechanism, each of which is disposed on the frame.

The spray pipe feeding mechanism 4 includes a feeding drive roller 6 horizontally suspended on a frame so that the roller axis intersects with the longitudinal direction of the pipe, and a feeding motor 41 provided on the lower surface of the frame and a transmission mechanism such as a chain and a sprocket. It is adapted to be rotated by means. A bracket 42 is erected on the frame 3,
A lifting cylinder 8 is fixed to this bracket 42, and a guide base 80 is attached to the piston rod of this cylinder 8.
A driven roller 7, which makes a pair with the feeding drive roller 6, is suspended horizontally through the feed roller 6.

The spray pipe rotation mechanism 5 includes a pair of rotation drive rollers 9 whose roller axes are parallel to the longitudinal direction of the pipe and a rotation motor 51 that drives the rollers. A driven roller 10, which forms a pair with the rotating drive roller 9, is attached to the piston rod of the lifting cylinder 11 via a guide base 111.

The blowing pipe feeding mechanism 4 and the blowing pipe rotating mechanism 5 are each driven and controlled independently, and as a means for this purpose, when one of the lifting cylinders 8, 11 moves downward, the other one moves downward. It incorporates a control system that disables the lifting cylinder.

Fig. 3 shows an example of this, and shows an operating fluid supply source such as a compressed air tank and lifting cylinders 8, 1.
1 is provided with 5-port 3-position switching valves 13 and 14 operated by push-side and pull-side solenoids SL1 and SL2, and SL3 and SL4, respectively, and preferably lift cylinders 8, 11, the on/off control means 15,
16. For example, the corresponding motor 41 or 51 is operated by an electric signal taken out from the solenoid or a signal from a limit switch or the like that detects movement of the piston rod or guide base.

In this case, the 5-port 3-position switching valve 13, 1
4 and the on/off control means 15, 16 are operated in the following sequence.

Push side solenoid of spray pipe feed mechanism 4
When SL1 is activated, the spray pipe rotation mechanism 5
Both push and pull side solenoids SL3 and SL4
is placed in the neutral position, and after the solenoid SL1 is activated, the feed motor 41 is activated.

Push side solenoid of spray pipe rotation mechanism 5
When SL3 is activated, the spray pipe feed mechanism 4
Both push and pull side solenoids SL1 and SL2
is placed in the neutral position, and after the solenoid SL3 is activated, the rotation motor 51 is activated.

Pull side solenoid of spray pipe feed mechanism 4
When either SL2 or the pull-side solenoid SL4 of the spray pipe rotation mechanism 5 is activated, the other solenoid SL4 or SL2 is also activated.

A two-position switching valve can also be used as the lifting cylinders 8, 11, but in this type of lining work, the blowing pipe 18 is fed and rotated quite frequently. Therefore, with simple push and pull operations, it takes time for the fluid to move in and out, resulting in a slow response to the above operations and a large time loss. As in the example, a 5-port 3-position switching valve 1
3 and 14, the non-moving rollers 7 and 10 come into contact with the spray pipe 18 under their own weight in the neutral position, and do not interfere with rotation or feeding by the drive roller. Therefore, the pushing operation by the lifting cylinder for transitioning from rotation to feeding or vice versa can be instantaneously switched.

Reference numerals 24 and 24' denote guide roller mechanisms provided at the front and back positions of the frame 3, including a fixed side roller 25 arranged on the frame and a removable side roller that forms a pair with this and surrounds the spray pipe 18 as shown in FIG. It consists of a roller 26.

In other drawings, 27 is the spray pipe 18
This is a swivel joint provided at the rear end of the pneumatic hose 28, and is connected to the pneumatic hose 28 so as to be relatively rotatable. Reference numeral 29 indicates a water addition section; 30 and 30' indicate heat shield plates fixed to the pedestal 2 and the frame 3; and 180 indicates a branched discharge pipe attached to the tip of the spray pipe 18.

Next, the usage and operation of the present invention will be explained.

When lining metal melting equipment with refractories, it is sufficient to place the base 1 near the target equipment A as shown in Fig. 1, and the device A of the present invention
, a swingable mount 2 is mounted on a base 1, a tiltable frame 3 is mounted on the mount 2, and a spray pipe feeding mechanism 4 and a spray pipe rotation mechanism 5 are mounted on the frame 3, so that the entire structure is It is compact and does not require special running lanes or waiting space.

To install the spray pipe 18, it is sufficient to open the guide roller mechanisms 24, 24' and energize the solenoids SL2 or SL4 of the 5-port 3-position switching valves 13, 14.
operates on the pulling side, each driven roller 7 of the spray pipe feeding mechanism 4 and the spray pipe rotation mechanism 5
10 rises, and the upper and side portions of the feed drive roller 6 and the rotation drive roller 9 become open spaces. Therefore, there is a branched discharge pipe 1 at the tip of the spray pipe 18.
80, the blowing pipe 18 can be attached and detached very easily without any problem. After installation, the guide roller mechanisms 24, 24' may be closed.

Next, to perform the lining work, the spray pipe 18 is inserted into the target equipment A, the refractory is fed from a pressure feeding means (not shown), and a liquid is added in the water addition section 29, while turning the turning motor 21 and the power as appropriate. The cylinder 32, the spray pipe feeding mechanism 4, and the spray pipe rotating mechanism 5 may be operated in combination.

First, the turntable 20 is rotated by the drive of the rotation motor 21, and the mount 2 and the frame 3 are rotated.
2, the spray pipe 18 turns in a horizontal plane as shown in FIG. Further, when the power cylinder 32 is actuated, the frame 3 is tilted about the pivot 31 as a fulcrum regardless of the rotation, so that the spray pipe 18 is also tilted by the same angle as shown in FIG.

And the solenoid of the spray pipe feeding mechanism 4
When SL1 is excited, the lifting cylinder 8 is operated to the push side, and the 5-port 3-position switching valve 14 in the circuit of the spray pipe rotation mechanism 5 is kept in a neutral state, and the driven The roller contacts the spray pipe 18 with a weight of 10. Therefore, the operation of the feed motor 41 causes the spray pipe 1 to
8 is narrowed by the feeding drive roller 6 and the driven roller 7, receives the driving force, and moves smoothly in the longitudinal direction.

In addition, the solenoid of the spray pipe rotation mechanism 5
When SL3 is excited, the elevating cylinder 11 operates to the pushing side, and the driven roller 10 descends to compress the spray pipe 18 with the rotating drive roller 9. And the solenoid SL of the spray pipe feeding mechanism 4
1 is demagnetized, the 5-port 3-position switching valve 13 moves to the neutral position, and the driven roller 7 comes into contact with the spray pipe 18 under its own weight. In this state, since the rotation motor 51 operates, the spray pipe 18 is rotated 360 degrees clockwise and counterclockwise via the swivel joint 27.
Rotate degrees.

In the present invention, the blowing pipe 18 is fed and rotated by separate mechanisms, and when one is activated, the other serves as a guide, and the pressure of the driven roller for feeding and rotation can be quickly switched. This is advantageous in that it not only has a simpler structure than the rotating/feeding system using a split drum, but also eliminates troubles such as twisting of the spray pipe 18 and allows for a larger rotation angle. And spray pipe 1
8 also does not require modification of the guide flange, etc., and the existing one can be used as is, and manual blowing work can be performed if necessary.

[Effect of idea]

According to the present invention described above, it is possible to provide an inexpensive lining device for metal melting equipment that has a simple and compact structure and can immediately and easily perform lining mechanically by simply placing it at a site with little space in front of the furnace. This excellent effect can be obtained.

[Brief explanation of drawings]

Fig. 1 is a side view showing one embodiment of the lining device for metal melting equipment according to the present invention, Fig. 2 is a plan view thereof, and Fig. 3 is the configuration of the blow pipe feeding mechanism and rotation mechanism in the present invention. FIGS. 4a and 4b are front views showing an embodiment of the guide roller mechanism according to the present invention. 1... Base, 2... Mount, 3... Frame,
4... Shot pipe feeding mechanism, 5... Shot pipe rotation mechanism, 6... Feeding drive roller, 7, 10
... Driven roller, 8, 11 ... Lifting cylinder,
18... Shot pipe.

Claims (1)

[Claims for Utility Model Registration] (1) A base 1, a pedestal 2 rotatably installed on the base, a frame 3 tiltably supported on the pedestal 2, and a sprayer for spraying refractories. a spray pipe 18, a spray pipe feeding mechanism 4 disposed on the frame for moving the spray pipe 18 in the axial direction, and a spray pipe rotating mechanism 5 for rotating the spray pipe 18 around the axis. and a spray pipe feeding mechanism 4.
The spray pipe rotation mechanism 5 is equipped with a feeding drive roller 6 whose roller axis intersects with the longitudinal direction of the spray pipe, a driven roller 7 facing the driven roller 7, and a cylinder 8 for raising and lowering the driven roller 7. A rotating driving roller 9 parallel to the longitudinal direction of the spray pipe and a driven roller 1 facing the rotating driving roller 9
0 and the cylinder 11 for raising and lowering this driven roller 10
A lining device for metal melting equipment, characterized by comprising: (2) Each of the lifting cylinders 8 and 11 of the spray pipe feeding mechanism 4 and the spray pipe rotating mechanism 5 is connected to a control system such that when one cylinder is operated to lower, the other cylinder is inactivated. A lining device for metal melting equipment as claimed in claim 1 of the registered utility model.