JPS5917408Y2 - Spray equipment with water-cooled spray pipe - Google Patents

Description

[Detailed description of the invention] The main object of this invention is a spraying device that performs spraying work under high temperatures, especially a device for spraying refractories for forming and repairing refractory layers in converters, electric furnaces, coke ovens, etc. It is characterized by a water-cooled structure of the spray pipe.

The water cooling structure of the conventional spray equipment has a double pipe structure for the spray pipe, the inside of the inner tube is a small spray pipe feeding path or a spraying material feeding path, and the gap between the pipe walls is divided into one by a partition wall, and multiple pipes are used. The mechanism for rotating, advancing and retracting the spray pipe required a guide or key and key groove to be provided separately from the water cooling structure.

Therefore, dividing the pipe wall gap into one or more partition walls is difficult to manufacture and requires a lot of man-hours, and it is also necessary to separately manufacture a guide or key and key groove for the mechanism for rotating, advancing and retracting the spray pipe. This also has the drawback of increasing the number of manufacturing steps.

The present invention aims to eliminate these drawbacks and provide a spraying device with a water-cooled spraying pipe that is easy to manufacture and can reduce the number of man-hours.

In this invention, part or all of the large spray pipe 1 has a double pipe structure, the inside of the inner pipe of the double pipe structure is used as the small spray pipe supply path, and the gap between the pipe walls is used as the cooling water channel 3. The present invention relates to a spraying device in which a spraying pipe is water-cooled and is characterized in that a water pipe 4 is arranged in parallel to a spraying pipe 1 so as to communicate with the cooling channel 3.

In the figure, 5 is a water supply port, 6 is a discharge port, 7 is a small rectangular spray pipe that directly feeds the spray material, 8 is an intermediate cylinder, 9 is a small pipe guide roller attached to the intermediate cylinder, and 10 is a small pipe guide roller attached to the intermediate cylinder. Dust-proof rolling, 11 is a rotating cylinder, 12 is a rotating mechanism, 13 is a support column,
14 is a raising/lowering arm, 15 is a roller for feeding out the large spray pipe 1, 16 is a roller for feeding out the small spray pipe 7, 17 is a spray nozzle, 18.19 is a water supply/drainage hose, 20 is a spray material pressure feeding hose, 21 is a guide groove for the water pipe 4.

The structure of the combination of the small spray pipe 7 and the small pipe guide roller 9 may be any structure as long as it can freely move forward and backward and rotate as a unit; for example, the combination of the small spray pipe 7 and the large spray pipe 1 may
It may be of a structure in which a key and a keyway are formed between the key and the keyway.

This embodiment is shown in FIGS. 4 and 5, where 3
0 is a pair of keys protruding from the periphery of the circular pipe 7, and a roller 9 rolls between both keys 30.

The cooling water channel 3 may further be provided with a partition wall.

In this design, the sprayer's pipe 1 has a double pipe structure, with the inner side serving as the small spray pipe feed passage 2, and the gap between the pipe walls serving as the cooling water passage 3.
By doing so, the heat to the small spray pipe 7 is blocked by the cooling water channel 3, and the large spray pipe 1 itself is cooled by the cooling water channel 3 to prevent thermal deformation and strength reduction, and the small spray pipe is cooled. This prevents the temperature rise of the small spray pipe 7 that directly feeds the spray material, and since the return channel is discharged through the water pipe 4 installed in parallel outside, it is possible to form a reciprocating channel in the cooling channel of the spray pipe as in the past. There is no need to provide a partition wall, making the production extremely easy. Furthermore, the water pipes installed in parallel on the vertical part provide ample force for rotation and movement (in the figure, the large spray pipe 1 connects to the rotating cylinder 11). (The water pipe 4 is used as a guide and is inserted loosely.) It is structurally simple and effective.

Therefore, according to the present invention, the structure of the water-cooled spray pipe can be easily manufactured, and the rotating and advancing/retracting structures can also be simplified.

[Brief explanation of the drawing]

Fig. 1 is a partially cutaway front view showing the main parts of the spraying device in which the spray pipe of the present invention is water-cooled, Fig. 2 is a cross-sectional side view taken along line II in Fig. 1, and Fig. 3 is taken along line II-II in Fig. 1. A cross-sectional side view, FIG. 4 is a partially cutaway front view showing the main part of a spray device using a small circular spray pipe with a key, and FIG.
FIG. 6 is an overall view of the spraying device of the present invention, and FIG. 7 is an explanatory view showing the delivery portion of the sprayer's pipe. 1: Large spray pipe, 2: Small spray pipe feed path, 3: Cooling waterway, 4: Water pipe.

Claims (1)

[Scope of utility model registration request] A part or all of the large spray pipe 1 has a double pipe structure, the inside of the inner pipe of the double pipe structure is used as a small spray pipe feed passage, and the gap between the pipe walls is used as a cooling water channel 3, and the spray pipe 1. A spraying device in which a spraying pipe is water-cooled, characterized in that a water pipe 4 is arranged side by side in communication with the cooling water channel 3.