JPS642158Y2 - - Google Patents

Description

[Detailed description of the invention] Industrial application field This invention is a monolithic refractory spraying device, in detail,
For example, the present invention relates to a device that sprays monolithic refractories onto the construction surface of cylindrical refractory structures such as reflux pipes and immersion pipes of RH degassing tanks through a spray nozzle in order to repair the damaged parts and the like.

The parts to be worked on, such as damaged parts, of a cylindrical refractory structure are both the inner and outer surfaces of the cylinder, so it is necessary to spray the monolithic refractory on both the inside and outside.

Conventional techniques and their problems Conventionally, a spraying device with a structure as shown in Fig. 3 has been used as a typical method for repairing the inner and outer surfaces of cylindrical refractory structures by spraying monolithic refractories. That is, an apparatus is known that has a configuration in which a monolithic refractory spraying machine 201 exclusively used for interior surface construction and a monolithic refractory spraying machine 202 exclusively used for external surface construction are installed together.

In this known device, an unshaped refractory 204 is discharged from a refractory supply source 203, referred to as a spray gun by those skilled in the art, into a discharge pipe 206 by a continuous discharge device 205, and compressed air from a compressed air source 207 is supplied. The switching valve 209 is connected through the wheel feed pipe 208.
is supplied to the spray machine 20 as required by the valve 209.
1 or the spraying machine 202 to supply the monolithic refractories. The monolithic refractory sent to the spraying machine 201 or 202 is mixed with water in the watering section 210, and then
It is sprayed from the spray nozzle 211 onto the inner or outer surface of the construction body 212 . In addition, the code 21 in Figure 3
3 is a spray nozzle 211 in the spray machine 201
214 is a motor that horizontally rotates the spray nozzle 211; 215 is a hydraulic cylinder/plunger device that vertically moves the spray nozzle 211 in the spray machine 202; 216 is a motor that horizontally rotates the spray nozzle 211; It shows the motor that

The above-mentioned known equipment is a combination of a spraying machine for internal construction and a spraying machine for external construction, so it requires a large amount of space for installation, and is not suitable for existing construction bodies in narrow spaces. There was a problem that it could not be applied. Incidentally, in places where space is limited, either the inner or outer surface can be sprayed using either a spraying machine designed exclusively for inner surfaces or a spraying machine exclusively designed for outer surfaces, and the other surfaces can be sprayed by conventional methods. The current situation is that construction is carried out by blowing.

Conventionally, as a spraying device that can be used for both interior and exterior construction, a spray nozzle is attached to a four-bar parallel link mechanism that can be bent in a vertical plane, and the spray nozzle is (Utility Model Publication No. 58-32138)
is also known. However, this known device requires a four-bar parallel link mechanism to displace the spray nozzle to a desired position, and is not structurally simple enough to displace the spray nozzle. The wear points are at least the four rotational joints of the four-bar parallel link mechanism.
There are many problems.

Furthermore, conventionally, in the device of the above-mentioned Japanese Utility Model Publication No. 58-32138, a structure shown in FIG. Jitsukō 58-46398
No. 2) is also known. In FIG. 4, the same symbols as in FIG. 3 indicate the same parts. In FIG. 4, reference numeral 300 is a four-bar parallel link mechanism, 301 is a spray nozzle for both interior and exterior construction, 302 and 303 are refractory material supply pipes that constitute two-bar links of the four-bar parallel link mechanism 300, and 304 is a pipe. It is a rotating joint. In FIG. 4, the bent state in which the four-bar parallel link mechanism 300 brings the spray nozzle 301 to a position corresponding to the outer surface of the construction body is shown by a chain line, and the bent state in which the four-bar parallel link mechanism 300 brings the spray nozzle 301 to a position corresponding to the inner surface of the construction body is shown by a chain line. The state is shown by a solid line. Reference numeral 305 denotes a horizontal rotation lifting device for the spray nozzle 301.

The known device having the configuration shown in FIG. 4, like the known device in the former publication mentioned above, has the same problem as above because it applies a displacement mechanism that substantially constitutes a four-bar parallel link mechanism to displace the spray nozzle. Furthermore, when the rotation joint of the refractory material supply pipe that constitutes the two-bar link of the four-bar parallel link mechanism is in a bent state, there is a problem that the refractory material blocks the flow path under the bend. There is.

The purpose of this invention is to make it possible to structurally easily displace the spray nozzle with respect to the inner and outer surfaces of the construction body, to reduce the number of wear points due to rotational friction, and to prevent clogging of refractory materials, and to be able to be used for both interior and exterior construction. An object of the present invention is to provide a spraying device for monolithic refractories.

Means for Solving the Problems The object of the present invention is to provide a base of a substantially transverse tube with a refractory spray nozzle at its tip near the outer pivot end of a support pivotable about a vertical axis. This is achieved by a monolithic refractory spraying device characterized in that one end of the supply pipe is attached so as to be horizontally pivotable, and the other end of the supply pipe, one end of which is connected to a refractory supply source, is connected to the proximal end of the pipe. Ru.

Embodiment Next, an embodiment of the present invention will be described with reference to FIGS. 1 and 2.

The monolithic refractory spraying apparatus according to the embodiment of the present invention shown in FIGS. It is equipped with a motor 5 and horizontally rotated via a transmission gear train 6. The support 3 pivots together with the turntable 1 about a vertical axis which is the axis of rotation of the table 1. The pedestal 4 is mounted on a base 7 and is raised and lowered by a hydraulic cylinder/plunger device 8. The base 7 is removably installed below the construction body 9. The support body 3 may be arm-shaped.

The support body 3 is provided with a portion near the outer end of the rotation so that the proximal end side of the substantially horizontal tube 11 having the refractory spray nozzle 10 at its tip can be rotated around a vertical axis, that is, horizontally rotated. Install possible. The tube 11 may be oriented horizontally at an angle instead of horizontally as shown. One end of a supply pipe 12 is connected to the base end side of the pipe 11. The other end of the supply pipe 12 is connected to a refractory supply source 13. As the refractory supply source 13, a conventionally known one can be applied.

In Figures 1 and 2, reference numeral 14 is a pipe connecting the proximal end of the pipe 11 and the distal end of the supply pipe 12, 15 is a rotary joint at the proximal end of the pipe 11, and 16 is a connection between the supply pipe 12 and the connecting pipe 14. It is a rotary joint as a part. Reference numeral 17 indicates a hydraulic cylinder/plunger device whose one end side is connected by a pin to a portion near the proximal end of the tube 11 so as to rotate in a direction around a vertical axis, and the other end side of the hydraulic cylinder/plunger device 17 is supported. It is pin-coupled at a suitable point on the body 3 for rotation in a direction about a vertical axis. 18 is a watering part, 19 is a material hose, 20 is a compressed air source, 21 is a refractory in the refractory supply source 13, 2
2 is a continuous discharge device, and 23 is a discharge pipe.

The operation of the illustrated embodiment of the present invention is as follows.

The essentially horizontal tube 11 can be repositioned horizontally by a hydraulic cylinder plunger device 17 to the solid line position shown in FIGS. The refractory material can be sprayed on the outer surface of the construction body 9 by applying the method, and the refractory material can be sprayed on the inner surface of the construction body 9 using the same spray nozzle 10 at the position indicated by the two-dot chain line.

That is, in order to displace the spray nozzle 10 to a position corresponding to the outer surface and a position corresponding to the inner surface of the construction body 9, the substantially horizontal pipe 11 with the spray nozzle 10 is disposed.
This is done by horizontal rotation at the proximal end, and the switching mechanism for performing this displacement is as follows:
For example, a type of two-bar link mechanism that is a combination of a hydraulic cylinder and a plunger as shown in the figure, which has a simpler structure than the conventional one, can be applied, and the rotation of the horizontal pipe 11 as a refractory supply pipe can be The moving part may be at one location in the rotary joint 15, and even if the horizontal tube 11 with the spray nozzle 10 has vertical parts on the distal and proximal ends, the direction changing part is always constant. It can take on a radiused configuration and the flow path will not be bent into a condition that would lead to blockage of the refractory material.

Note that in order to rotate the spray nozzle 10 along the outer surface or inner surface of the construction body 9 at the solid line position or the two-dot chain line position in FIGS. 1 and 2, this can be done by driving the motor 5. attached nozzle 1
0 is driven up and down by a hydraulic cylinder/plunger device 8. motor 5
When the turntable 1 is driven, the turntable 1 rotates horizontally through the transmission gear train 6, the support body 3 rotates horizontally together with the frame 2, and the spray nozzle 10 also rotates integrally with the pipe 11.
When the plunger device 8 is actuated, the support body 3 moves up and down via the pedestal 4, turntable 1, and frame 2, and accordingly, the spray nozzle 10 moves up and down together with the horizontal tube 11.

Effects of the invention As is clear from the above, according to the invention, the spray nozzle can be structurally simply displaced with respect to the inner and outer surfaces of the construction body, there are fewer parts worn out due to rotational friction, and there is no blockage of the refractory material. It is possible to provide a monolithic refractory spraying device that can be used for both interior and exterior construction.

[Brief explanation of the drawing]

Figure 1 is a front view showing one embodiment of the present invention;
The figures are a partial plan view of the device in Figure 1, Figures 3 and 4.
The figures are front views of different conventional devices. DESCRIPTION OF SYMBOLS 1... Turntable, 2... Frame, 3... Support body, 4... Frame, 5... Support horizontal rotation motor, 6
... Transmission gear train, 7... Base, 8... Hydraulic cylinder/plunger device for lifting and lowering the support, 9... Construction body, 10...
Refractory spray nozzle, 11... horizontal pipe, 12...
Supply pipe, 13... Refractory supply source, 14... Connecting pipe, 1
5, 16...Rotary joint, 17...Fluid pressure cylinder/plunger device for switching the refractory spray nozzle construction position, 18...Water ring section.

Claims (1)

[Scope of utility model registration request] The proximal end side of a substantially horizontal tube having a refractory spray nozzle at the tip is attached so as to be horizontally pivotable to a portion near the outer end of the pivot of a support body that is pivotable about a vertical axis, and the base end side of the tube is horizontally pivotable. A monolithic refractory spraying device characterized in that one end of a supply pipe is connected to a refractory supply source and the other end thereof is connected to a refractory supply source.