JP2006038310A - Force feed device for castable refractory or the like - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To smoothly carry out force feed and to carry out a refurbishment process in a force feed device for a castable refractory or the like without causing clogging of fine powder. <P>SOLUTION: In a force feed holder part 4 carrying out force feed of concrete, the castable refractory, or the like, a drain hole 9 is provided so as to freely open and close such that water left in a pump hopper of the force feed device 1 can be easily drawn out, and a mortar paste filler hole 7 is provided so as to freely open and close for filling a mortar paste. A slide gate 11 capable of cutting off influent cleaning water and high pressure air is provided so as to freely open and close in the force feed holder part 4 such that cleaning water and high pressure air flowing in from the drain hole 9 and the mortar paste filling hole 7 do not flow backwards toward an upstream pump side. A water filling tool 22 is formed so it can be connected to the drain hole 9, a high pressure air supplying tool 22 is formed so it can be connected to the mortar paste filling hole, and it is preferable to provide the drain hole 9 directly below the mortar paste filling hole 7. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

The present invention relates to a pressure-feed device such as a refractory castable used in the metallurgy field, construction work field, and the like.

In pumping work such as concrete and fireproof castable, pumping is performed using a piston pump or a squeeze pump. At the start of the pumping, the moisture of the material is taken to the pipe wall of the pumping pipe or pumping hose, and water is sent to prevent the material from clogging.

After this, the material is sent, but when the water and the material are in direct contact, only the fine powder portion in the material is dissolved in the water, and the fine powder and particles are separated. At this time, the material made only of grains loses fluidity and becomes clogged in the pressure feeding pipe. In order to prevent this, mortar paste or the like is sent, and then the material is sent. After the pumping operation is completed, the procedure for discharging the material remaining in the pipe is reversed from the start.

However, when the mortar paste is put from the pump hopper at the start of pumping, the mortar paste may be diluted by the water remaining in the hopper, and the fine powder and particles of the material may be separated.
There is a risk of pipe clogging.

In addition, when discharging the material remaining in the pipe after completion of the pressure feeding operation, a mortar paste is made and put into a pump hopper, pumped to some extent, filled with water, and further pumped. After that, the pipes and hoses must be washed with water. If the material remains in the pipes and hoses, it will cause clogging the next time it is pumped.

Also in wet spraying construction, as in JP-A-2002-39688, concrete or refractory castable is pumped to the spraying nozzle portion in the same manner as above, and high-pressure air and rapid setting agent are mixed in the spraying nozzle portion. Spray. For this reason, the same problem as described above occurs.
JP2002-39688

Therefore, in order to prevent clogging in the pumping pipe, water is put into the pump hopper at the start of pumping, and the pipe is wetted by pumping, and then the water in the pump hopper is drained, mortar paste is put into the pipe, and water and materials are mixed. The challenge is to avoid direct contact. For this,
It is necessary that water remaining in the pump hopper can be easily extracted. Moreover, it is necessary that the mortar paste can be easily injected into the pipe.

Furthermore, it is necessary to discharge the material in the pipe after the pumping operation is completed, and after the material is pushed out of the pipe, water is injected into the pipe and then pushed out with high-pressure air to clean the pipe. is there.

The present invention has been made in view of the above points. In order to solve the above problems, the present invention provides a pressure-feed device such as a fire-resistant castable that pressure-feeds concrete, fire-resistant castable, etc., and pumps the concrete, fire-resistant castable, etc. The water supply port is opened and closed so that the water remaining in the pump hopper of the pumping device can be easily extracted and the mortar paste injection port for injecting mortar paste is opened and closed. , Washing water flowing in from the drain port, mortar paste injection port, washing water flowing so that high-pressure air does not flow back to the upstream pump side, and high-pressure air can be shut off. An object of the present invention is to provide a pressure-feed device such as a fire-resistant castable that is provided.

In addition, a water injection tool can be connected to the drain port, a high pressure air supply tool can be connected to the mortar paste injection port, and a drain port is provided directly below the mortar paste injection port. The object is to provide a pressure-feeding device such as a refractory castable.

The pressure-feeding device such as the fire-resistant castable of the present invention is provided with a drainage port that can be easily opened and closed so that water remaining in the pump hopper of the pressure-feeding device can be easily drawn out to a pressure-feeding jig portion for feeding concrete or fire-resistant castable. At the same time, the mortar paste injection port for injecting the mortar paste is arranged to be openable and closable, so that water is poured into the pump hopper at the start of pumping, the pump is wetted, and water remaining in the pump hopper is easily removed. be able to. And a mortar paste can be easily inject | poured into piping from a mortar inlet.

Also, the sliding gate can be opened and closed in the pressure feeding jig section so that the washing water flowing in from the drain port and the mortar paste injection port, the washing water flowing in so that the high-pressure air does not flow back to the upstream pump side, and the high-pressure air can be shut off. Therefore, after the material is pushed out from the pipe after completion of the pressure feeding operation, the washing water can easily flow into the pipe, and the high pressure air can flow in and push out to clean the inside of the pipe cleanly.

In addition, a water injection tool can be connected to the drain port, a high pressure air supply tool can be connected to the mortar paste injection port, and a drain port is provided directly below the mortar paste injection port, as described above. The water can be drained and the mortar paste can be poured, and the drained state can be easily confirmed from the mortar paste inlet.

The pressure feeding device such as fireproof castable of the present invention is a pressure feeding device such as fireproof castable that pumps concrete or fireproof castable, etc., and the pumping hopper of the pressure feeding device has a pumping jig portion that pumps the concrete or fireproof castable etc. A drainage port is provided so that the remaining water can be easily drawn out, and a mortar paste injection port for injecting mortar paste is provided in an openable and closable manner, and flows from the drainage port and the mortar paste injection port. It is characterized in that the sliding gate can be opened and closed in the pressure feeding jig portion so that the washing water and the high pressure air that flow in so as not to flow back to the upstream pump side can be shut off.

As shown in FIG. 1, a pressure feeding device 1 such as a fireproof castable is connected to a pressure feeding pump 2 and a pump hopper 3.
Are connected, and a pressure-feeding pipe 5 such as a flexible hose is flange-connected via the pressure-feeding jig portion 4 so that a predetermined repair site such as a blast furnace can be repaired.

As shown in FIG. 2, the pressure feeding jig portion 4 opens and closes the inlet cap 8 by connecting a mortar paste injection port 7 having a diameter of 30 to 50 mm to the upper side of the central portion of the pressure feeding jig body 6 of a pipe having a predetermined diameter. A drainage port 9 having a diameter of 10 to 30 mm is provided below the drainage plug 10 so that the drainage port plug 10 can be opened and closed, and mortar paste is injected from the mortar paste injection port 7. Or high pressure air is allowed to flow, residual water in the pump hopper 3 is drained from the drain port 9 or cleaning water is allowed to flow for cleaning.

In addition, a slide gate 11 is disposed upstream of the mortar paste injection port 7 and the drain port 9 of the pressure feeding jig portion 4 and is normally opened to feed the material of the pump hopper 3 to the pressure feeding tube 5 side. The slide gate 11 is configured so that it does not flow back to the upstream side when high-pressure water or washing water flows from the mortar paste injection port 7 or the drain port 9 and is washed.
To be able to close.

As shown in FIGS. 3A and 3B, the slide gate 11 has a gate slide flange 12 and 13 connected to the pressure feed jig body 6 and a pressure feed opening 14 and a partition between the gate slide flanges 12 and 13. A slide gate 11 having a predetermined length 15 is slidably mounted with sealing members 16 and 17 interposed therebetween, and the slide gate 11 is slid up and down to thereby move the upstream side of the pressure feeding jig main body 6. It can be opened and closed. The gate slide flange 12,
13 can be watertightly connected by a fixing bolt 18, and the slide gate 11 can also be fixed at a predetermined position by inserting a fixing bolt 20 through the fixing hole 19.

As shown in FIG. 4, a high pressure air supply device 21 and a washing water injection device 22 are connected to the mortar paste injection port 7 and the drain port 9 of the pressure feeding jig 4 as described above. The high-pressure air hose 23 and the water hose 24 are detachably connected, and the switching valves 25 and 26 such as ball valves are operated so that high-pressure air and washing water can flow in.

The high-pressure air supply device 21 and the water injection device 22 are connected using the mortar paste injection port 7 and the water discharge port 9, but may be provided separately or provided as a three-way port as appropriate according to the spirit of the present invention. Various modifications can be implemented.

FIG. 1 and the following figures show an embodiment of the present invention that was prototyped for refurbishing a blast furnace at Company A's steelworks according to the present invention. As shown in FIG. A mortar paste injection port 7 is connected, a 20 mm diameter drainage port 9 is connected immediately below, and a slide gate 11 is slid slightly upstream as shown in FIGS. 2, 3 (a) and 3 (b). It is attached as possible.

The pump 2, the pump hopper 3, the pumping jig 4, and the pumping pipe 5 are connected and water is poured into the pump hopper 3. After the water is first pumped to wet the pipe, the drainage port of the pumping jig 4 9 is opened and water is drained from the pump hopper 3 and the pressure feeding jig part 4. Next, the drainage port 9 was closed, the upper mortar paste injection port 7 was opened, it was confirmed that water had drained, and the mortar paste was injected through a commercially available mortar paste injection device. After injecting about 50 kg, the mortar paste injection port 7 was closed, and the fire-resistant castable of the pressure-feed material was put into the pump hopper 3 and pumped.

As shown in FIG. 2, the mortar paste injection port 7 is provided at the upper part of the pressure feeding jig portion 4, and the water drain port 9 is provided directly below the mortar paste injection port 7. Since the drain port 9 is directly below the mortar paste inlet 7, drainage can be easily confirmed from the mortar paste inlet 7.

Also, slide the slide gate 11 of the pressure feeding jig 4 to the direction of closing the pressure feeding jig 4 and tighten it with a bolt 18 or the like so that air does not leak from the slide gate (
The mortar paste injection port 7 and the drainage port 9 were opened to remove the material at this site.

As shown in FIG. 4, a high pressure air supply device 21 with a valve is connected to the mortar paste injection port 7, a water injection device 22 with a valve is connected to the drain port 9, and high pressure air of about 0.6 MPa is supplied from a compressor or the like. Send to the supply tool 21, open the valve and send high pressure air to the pipe,
The material in the pipe was pushed out.

After discharging, close the valve of the high pressure air supply 21 and open the valve of the water injection tool 22
About 10 liters of washing water was put in the pipe, the valve of the water injection tool 22 was closed, the valve of the high-pressure air supply tool 21 was opened, and the pipe was washed with water and high-pressure air. By repeating this operation 3 to 4 times, the inside of the pipe could be completely cleaned without removing the pipe.

Thus, by providing the slide gate 11 on the pump side from the mortar paste injection port 7 and closing the pipe with this, high pressure air can be prevented from flowing back to the pump side, and by using the pressure feeding jig portion of the present invention. Significant reduction of work man-hours.

1 is an overall schematic diagram of an embodiment of the present invention; Explanatory drawing of the same pressure feeding jig part, Cross sectional view (a) and side sectional view (b) of the slide gate portion same as above, Exploded view for explaining the supply of high-pressure air and cleaning water in the pressure feeding jig part.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Pressure feeding apparatus 2 ... Pressure feeding pump 3 ... Pump hopper 4 ... Pressure feeding jig part 5 ... Pressure feeding pipe 6 ... Pressure feeding jig main body 7 ... Mortar paste injection port 9 ... Drain port 11 ... Slide gate 21 ... High pressure air supply tool 22 ... Water injection tool

Claims (2)

A pumping device such as a fireproof castable that pumps concrete or fireproof castable,
A mortar paste injection that injects mortar paste while opening and closing the drain port so that the water remaining in the pump hopper of the pumping device can be easily drawn out to the pumping jig part that pumps concrete, fireproof castable, etc. The entrance can be freely opened and closed,
Washing water flowing in from the above drainage port, mortar paste injection port, cleaning water flowing in so that high-pressure air does not flow back to the upstream pump side, and high-pressure air can be shut off, and the slide gate can be opened and closed in the pressure feeding jig. A pressure-feeding device such as a fire-resistant castable, which is characterized by being installed. The fireproof device according to claim 1, wherein a water injection tool is connectable to the drainage port, a high pressure air supply tool is connectable to the mortar paste injection port, and the water drainage port is provided directly below the mortar paste injection port. A pumping device such as castable.

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