JPH10169178A - Mortar impregnation equipment - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a mortar impregnating apparatus which can impregnate mortar into rock wool efficiently, does not scatter mortar around, and is easy to handle. The mortar impregnating device has a needle (2) inserted into rock wool, and a mortar filling device (1) for injecting mortar into the rock wool through a passage in the needle (2).
And a feed pipe 7 for feeding mortar to the mortar filling device 1
A mortar tank 20 storing mortar M to be sent to the mortar filling device 1, a mortar pump 25 for sucking and discharging the mortar M in the mortar tank 20, and a mortar discharged from the pump 25 during non-operation. A return pipe 34 for circulating to the tank 20 and a communication path switching means 30 for selectively communicating the discharge pipe 27 of the pump 25 with the feed pipe 7 and the return pipe 34 are provided.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for impregnating rock wool with mortar (including cement slurry) when performing fire-resistant coating work on steel frames.

[0002]

2. Description of the Related Art As a method for refractory coating of a steel frame, a method of spraying a mixture of rock wool and mortar is generally used. However, dust tends to be scattered and the working environment is liable to be deteriorated. Therefore, a method has been proposed in which a mortar is impregnated into rock wool after a formed plate of rock wool is pasted on a steel frame in advance.

[0003]

However, there has not been an apparatus for efficiently filling mortar into rock wool on site.

The present invention has been made in view of the above circumstances, and has as its object to provide a mortar impregnating apparatus that can efficiently impregnate mortar into rock wool, does not scatter mortar around, and is easy to handle. I do.

[0005]

A mortar impregnating device according to the present invention has a needle inserted into rock wool, and a mortar filler for injecting mortar into rock wool through a passage in the needle. A feed pipe for feeding mortar to the mortar filler, a mortar tank storing mortar for sending to the mortar filler, a mortar pump for sucking and discharging mortar in the mortar tank, It is characterized by comprising a return pipe for circulating mortar discharged from a pump to a mortar tank, and communication path switching means for selectively connecting a discharge pipe of the pump to the feed pipe and the return pipe.

A mortar impregnating apparatus according to a second aspect of the present invention is characterized in that, in the first aspect, the mortar filling device is provided with a hand switch for issuing a command to supply mortar to the mortar filling device.

[0007]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a configuration diagram showing an overall outline of a mortar impregnating apparatus. This mortar impregnating apparatus includes a hand-held mortar filling device 1, a feed pipe 7 for feeding mortar to the mortar filling device 1, a mortar tank 20 storing mortar M for sending to the mortar filling device 1, and a mortar tank 2.
Mortar pump 2 that sucks and discharges mortar M within 0
5, a return pipe 34 for circulating the mortar M discharged from the mortar pump 25 during non-working (non-injection) to the mortar tank 20, and a discharge pipe 27 of the mortar pump 25, the feed pipe 7 and the return pipe 34. And a switching manifold (communication path switching device) 30 for selectively communicating with each other.

The tip of a suction pipe 26 of a mortar pump 25 is inserted into the mortar tank 20, and a strainer 28 is attached to the tip. Further, a stirrer 21 driven by a motor 22 is attached to the mortar tank 20 and constantly stirs the mortar in the mortar tank 20.

A flow control valve 29 is interposed in the discharge pipe 27 of the mortar pump 25 so that the discharge flow can be appropriately controlled. The tip of the discharge pipe 27 is connected to the inlet of the branch 31 of the switching manifold 30. One of the two outlets of the branch 31 is connected to the feed pipe 7 via a feed valve 32 provided in the switching manifold 30, and the other is a return pipe via a circulation valve 33 provided in the switching manifold 30. 34. Also,
A pressure gauge 40 is attached to the switching manifold 30 so that the pressure on the feed pipe 7 side can be detected.

The mortar filling device 1 has a needle 2 inserted into a rock wool molding plate, and injects mortar into the rock wool molding plate through a passage in the needle 2. It is configured as shown in FIGS.

As shown in FIGS. 2 and 3, the mortar filling device 1 is of a rectangular box type, and has a handle 5 on its upper surface so that it can be held by hand. The needles 2 are projected from the lower surface at a plurality of intervals, and the mortar sent from the feed pipe 7 passes through a passage in the needles 2 and has an opening 2 a formed in the peripheral wall of the needles 2 (see FIG. 4). ). In the vicinity of the handle 5, there are provided a hand switch 3 which can be operated with the thumb or the like of the hand holding the handle 5, and a lamp 6 for indicating that injection is being performed. The lower surface is provided with a limit switch 4 that is turned on when the needle 2 is inserted into the rock wool molding plate.

As shown in FIG. 1, the mortar filling device 1 is connected to a mortar pump 25 via a feed pipe 7 and a main switch 5 via a cable 8.
1 is connected to the control panel 50.

In use, the main switch 51 of the control panel 50 is turned on, and the hand switch 3 of the mortar filling device 1 is turned on.
Turn ON. In this state, as shown in FIG. 5, the needle 2 of the mortar filling device 1 is inserted into the rock wool molded plate R. Then, the limit switch 4 provided on the mortar filling device 1 comes into contact with the other rock wool forming plate and turns ON, the supply valve 32 of the switching manifold 30 opens, and the mortar discharged from the mortar pump 25 is supplied. It is fed into the mortar filling device 1 through the pipe 7 and injected into the rock wool molding plate through the opening 2 a of the needle 2.

When the limit switch 4 is turned on, a timer in the control panel 50 is simultaneously operated. When a predetermined time has elapsed, the control panel 50 closes the feed valve 32 and opens the circulation valve 33 according to a timer command. . Thereby,
The injection by the mortar filling device 1 is stopped, and the mortar M discharged from the mortar pump 25 circulates among the pump 25, the discharge pipe 27, the return pipe 34, and the mortar tank 20.

Since the pressure gauge 40 detects the pressure of the supplied mortar, when the pressure gauge 40 detects that the mortar filling pressure of the mortar filling device 1 has exceeded a predetermined value, the mortar filling device is detected. The supply of mortar to one may be stopped. In this case, the signal of the pressure gauge may be used instead of the timer, or the signals of both the timer and the pressure gauge may be used.

As described above, since the mortar is injected by inserting the needle 2 of the mortar filling device 1 into the rock wool molding plate, the mortar can be reliably filled even into the deep part of the rock wool molding plate. In addition, since the injection is performed through the needle 2, the mortar can be efficiently impregnated into the rock wool molded plate, and the mortar can be prevented from scattering around, thereby improving workability.

Further, the mortar is circulated by the mortar pump 25 during non-operation (non-injection) by the operation of the switching manifold 30, so that there is no mortar stagnation in the discharge line 27, and the mortar is discharged. 27 can be prevented, air can be prevented from being mixed by repeated start and stop of the pump 25, and a good stirring effect including the mortar tank 20 can be obtained. Therefore, at the start of the pouring operation, the mortar in a good state can always be sent to the mortar filling device 1, and the quality of the refractory coating can be improved. Further, by operating the hand switch 3 of the mortar filling device 1, the mortar feeding can be controlled, so that the handling is very simple and the workability is good. Further, since the mortar filler 1 is provided with the limit switch 4, it is possible to prevent the mortar from flowing out by mistake when the mortar filler 1 is separated from the rock wool molding plate.

[0018]

As described above, according to the mortar impregnating device of the first aspect of the present invention, the mortar is injected into the rock wool through the needle of the mortar filler, so that the mortar can be surely applied to the deep part of the rock wool. Can be filled. Further, the mortar can be efficiently impregnated into the rock wool, and the mortar can be prevented from scattering around, thereby improving workability. In addition, since the mortar is circulated by the pump during non-operation (at the time of non-injection) by the communication path switching means, there is no mortar stagnation in the discharge pipe, and it is possible to prevent the mortar from being fixed in the discharge pipe, and Mixing of air due to repeated start and stop can be prevented, and a good stirring effect including the mortar tank can be obtained.
Therefore, at the start of the pouring operation, the mortar in a good state can always be sent out to the mortar filler, and the quality of the refractory coating can be improved.

According to the mortar impregnating apparatus of the second aspect of the present invention, the mortar feeding control can be performed by operating the hand switch of the mortar filling device, so that the handling is simple.

[Brief description of the drawings]

FIG. 1 is a system diagram showing an overall outline of a mortar impregnating apparatus according to an embodiment of the present invention.

FIG. 2 is a perspective view of a mortar filler in the mortar impregnating apparatus.

FIG. 3 is a perspective view of the lower surface side of the mortar filler.

FIG. 4 is a side view of the mortar filler.

FIG. 5 is a cross-sectional view showing a state in which a needle of the mortar filler is inserted into a rock wool molding plate.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Mortar filling device 2 needle 3 Hand switch 7 Feeding pipe 20 Mortar tank 25 Mortar pump 30 Switching manifold (communication path switching means) 34 Return pipe M Mortar R Rock wool

Claims (2)

[Claims] An apparatus for impregnating rock wool with mortar, comprising a needle inserted into the rock wool, and a mortar filling device for injecting the mortar into the rock wool through a passage in the needle. A feed pipe for feeding mortar to the mortar filler, a mortar tank storing mortar for sending to the mortar filler, a mortar pump for sucking and discharging mortar in the mortar tank, and A mortar impregnating device comprising: a return pipe for circulating mortar to be discharged to a mortar tank; and a communication path switching unit for selectively communicating a discharge pipe of the pump with the feed pipe and the return pipe. . 2. The mortar impregnating apparatus according to claim 1, wherein the mortar filling device is provided with a hand switch for issuing a command to supply the mortar to the mortar filling device.