JPH05124022A - Equipment for continuously producing refractory plate - Google Patents

Abstract

PURPOSE:To provide an equipment for continuously producing a refractory plate which has the smooth surface and is dense and of high strength. CONSTITUTION:The title equipment is equipped with a storage hopper 14 for storing mortar and slowly feeding this mortar from the lower part, a conveyor 12 wherein a liquid-passable belt 11 receiving mortar 13 fed from the storage hopper 14 is used, a dehydrating mechanism 15 which is arranged in the lower part of the liquid-passable belt 11 and absorbs moisture of mortar 13 through the belt 11, a pressurizing mechanism 16 for pressing and molding mortar 13 from the upper and lower parts and a traveling cutter 17 for cutting a plate made of cement passed through the pressurizing mechanism 16 in prescribed length.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for continuously producing a refractory flat plate that can be used, for example, as a wall material for construction.

[0002]

2. Description of the Related Art Conventionally, in order to manufacture a lightweight cement flat plate using a lightweight aggregate having closed cells such as fly ash balloons, shirasu balloons and perlite, the cement and the lightweight bones are required to have a predetermined flow value in advance. The light mortar in which materials, reinforcing fibers, an admixture, water and the like are mixed and adjusted is poured into a mold in a predetermined amount to manufacture each one.

[0003]

However, in the production of the lightweight cement flat plate according to the conventional example, there are the following drawbacks. The (water / cement) ratio is increased to facilitate pouring of the mortar, and the strength of the flat plate is reduced. Blowholes are often generated on the flat plate surface (mainly the lower surface side during casting), and this blowhole embedding correction work in a later step is necessary. Since it is difficult to uniformly disperse the fibers in the mortar, a special technique is required to make the mortar containing the reinforcing fibers. Since it is difficult to make a dense mortar plate, it is difficult to make a plate with low water permeability. At a minimum, you will need a quantity of formwork that is comparable to the production volume up to the first demolding. The present invention has been made in view of the above circumstances, and an object of the present invention is to provide an apparatus for continuously producing a dense and high-strength refractory flat plate having a smooth surface.

[0004]

A method according to the above-mentioned object.
A continuous production apparatus for the refractory flat plate described, a mortar storage hopper for storing mortar and gradually cutting out the mortar from the lower part, a conveyor using a liquid permeable belt for receiving the mortar cut out from the mortar storage hopper, and A dehydration mechanism arranged below the liquid-permeable belt to absorb the moisture of the mortar through the liquid-permeable belt, a pressure mechanism for press-molding the mortar from above and below, and a cement flat plate that has passed through the pressure mechanism. It is configured to have a running cutting machine that cuts to a predetermined length. Here, when both sides of the liquid-permeable belt are bent upward to form a groove, a lightweight aggregate is used for the mortar, and even when reinforcing fibers are arranged in the mortar, The invention applies.

[0005]

In the continuous refractory flat plate manufacturing apparatus according to claim 1, the mortar is cut out from the mortar storage hopper to a predetermined thickness on a conveyor using the liquid permeable belt, and the lower part of the liquid permeable belt is provided. Since the dehydration mechanism is arranged, unnecessary water in the mortar is removed. Since the mortar conveyed by the conveyor is press-molded up and down by the pressing mechanism, a fire-resistant flat plate having a high packing density can be manufactured. In addition, after this, the product is sufficiently dried and cured to obtain a product.

[0006]

EXAMPLES Next, examples embodying the present invention will be described. 1 is a schematic side view of a continuous refractory flat plate manufacturing apparatus according to an embodiment of the present invention, and FIG. 2 is a central sectional view taken along the line AA in FIG.

First, as shown in FIG.
Is a conveyor 12 using a filter cloth belt 11 which is an example of a liquid permeable belt, a mortar storage hopper 14 for storing the light mortar 13 and gradually cutting out the light mortar 13 from the lower part, and a lower part of the filter cloth belt 11. , Which is one of the components of the dehydration mechanism, a pressure mechanism 16 that press-molds the mortar being conveyed from above and below, and the cement flat plate that has passed through the pressure mechanism 16 is cut into a predetermined length. It is configured to have a cross-cutting machine 17. Less than,
These will be described in detail.

The filter cloth belt 11 is, as shown in FIG.
Sturdy synthetic fibers with sufficient strength (eg nylon,
Tetron, aramid fiber) or natural fiber (eg,
It consists of cotton and hemp) and does not allow the upper mortar to pass through, but allows the water contained inside to pass through. After passing through the rear reversing roll 18, it is bent by guide members 19 and 20 provided on both sides to form a side wall and has a gutter-shaped cross section so that the mortar 13 does not escape from both sides. The filter cloth belt 11
Is provided at the front end, and the filter cloth belt 11 is fed at a predetermined speed by a drive motor (not shown).

The mortar storage hopper 14 has a substantially rectangular cross section and does not have a bottom plate. The mortar storage hopper 14 stores the light mortar 13 charged from the upper portion and cuts it out on the lower filter cloth belt 11 with a predetermined thickness. .. The dewatering mechanism includes a vacuum tank 15 provided at the bottom of the filter cloth belt 11 and having a large number of small holes on the ceiling surface, and a vacuum pump (not shown) connected to the vacuum tank 15, The filter cloth belt 11 is designed to absorb the water contained in the mortar.

The pressurizing mechanism 16 includes a lower roll 23 having a hole on the lower side, an upper pressing roll 24, and a synthetic fiber or a natural fiber having a sufficient strength arranged between the pressing roll 24 and the mortar 13. An upper belt 25 made of a fiber made of, a synthetic resin or a rubber belt having flexibility
A driving roll 26 for driving the upper belt 25, a reversing roll 27, a plurality of lower guide rolls 28 and a tension roll 29, and hydraulic pressure or pneumatic pressure for pushing the pressing roll 24 downward via springs 30 and 31. The mortar 13 that has a cylinder 31 of
Is pressed to a predetermined pressure to form a dense cement flat plate. The lower roll 23 with the holes
Is connected to a vacuum pump (not shown) so that water can be sucked from the upper part, and the lower part from the middle part of the lower roll 23 prevents the intake of air from the surroundings. A cover is provided so that the filter cloth belt 11 on the upper side positively absorbs water. The lower roll may be a roll without holes. The upper belt 25 is made of mortar 1.
It is intended to smoothly press 3 from above and below, but in some cases it is possible to omit it by using a roll having a large diameter, and it is also possible to vacuum suction the upper roll. A conveyor 33 connected to the conveyor 12 is provided, and the conveyor 33 is provided with a running cutting machine 17 that moves in synchronization with the conveyor 33 and cuts a cement flat plate on the conveyor 33 into a predetermined length. Has been. A payoff reel 34 is provided at the rear of the conveyor 12 so that a plurality of reinforcing fibers 35 can be arranged in parallel in the cement flat plate at a predetermined pitch. Here, 36-39 are bearings, 40, 4
Reference numeral 1 is a fixed housing, 42 and 43 are housings having guides and arranged so as to be movable up and down, and 44 is a support member.

Next, a method of manufacturing a cement flat plate by the refractory flat plate manufacturing apparatus 10 will be described.
With a plurality of reinforcing fibers 35 stretched in parallel at a predetermined pitch in advance, light weight mortar (fly ash balloon, shirasu balloon or pearlite) having a thickness 1.2 to 5 times the required thickness from the mortar storage hopper 14 is continuously provided. (A mixture of lightweight aggregate, cement, water, etc.) having a closed cell body such as 13) is cut out. Both ends of the filter cloth belt 11 are bent upward, and a cross section thereof forms a trough.
Light mortar 1 cut out from the storage hopper 14
A vacuum tank 22 installed on the lower surface of the belt 3 sucks and dehydrates excess water content through the filter cloth belt 11 and sends the water to the pressure zone 36, which is a belt belt zone behind the filter cloth belt 11. Here, the distance of the suction dehydration section is about 1 to 10 m.

The belt pressing zone 36 is provided on the wedge formed by the upper and lower belts 25 and 11, and the lightweight mortar 13 is formed.
Is forcibly sent to be dehydrated by press. The lower surface of the filter cloth belt 11, which is the lower belt, is sucked and dewatered by the vacuum tank 15 and the lower roll 23 with holes. Further, on the back surface of the upper belt 25, in order to prevent the lifting of the belt, the guide rolls 2 are arranged at an appropriate pitch.
8 are arranged. The wedge angle of the upper and lower belts is 0 to 15
It can be adjusted within a range of degrees. The cement flat plate pre-pressed in the belt pressing zone 36 is a press roll composed of a combination of a pressing roll 24 and a lower roll 23 having a hole at the bottom, and a pressure of 0 to 100 kg / cm ² is applied to the cement flat plate, and the required width,
The cement flat plate is manufactured by continuously molding and dehydrating to a thickness. The cement flat plate manufactured through the above steps is transferred to the conveyor 33 of the running cutter 17, cut into a length of a required dimension, and dried by air flow to obtain a product. The reinforcing fiber 35 is continuously fed from the rear of the mortar storage hopper 14 by the pay-off reel 34, and has a uniform distribution in the cement flat plate, so that the minimum fiber amount can be obtained to obtain the required strength. ..

Table 1 shows the weight ratios of the raw materials used in Examples 1, 2 and 3 which were specifically tested, and Table 2 shows the conditions, but the present invention is limited to the numbers in this example. It is not something that will be done.

[0014]

[Table 1]

[0015]

[Table 2]

[0016]

[Table 3]

Table 3 shows the test results of the cement flat plate manufactured under the above conditions. When the amount of shirasu balloon was increased, a relatively light cement flat plate was manufactured.
When the amount of Portland cement is increased, a cement flat plate having sufficient strength can be manufactured.

Although Portland cement was used as the binder in the above-mentioned examples, the present invention can be applied to other cements or binders. Although shirasu balloon was used as the lightweight aggregate in the above-mentioned examples, the present invention is also applicable to fly ash balloons, shirasu balloons, perlite, and other natural or artificial aggregates. In the above embodiment, the side wall of the conveyor was formed by folding the conveyor, but it is also possible to form the side wall by using a member different from the member of the conveyor, and in some cases, the side wall is formed. It is also possible to omit it, and in this case, it is also possible to cut off both sides in the final processing. Further, in the above-mentioned examples, although the synthetic resin fiber was used as the reinforcing fiber, it is possible to configure the glass fiber, the carbon fiber, the pitch fiber or other mineral fiber, in some cases, the metal fiber, the metal wire, This further improves the fire resistance. Further, in the above-mentioned embodiment, the reinforcing fiber is arranged in parallel with the conveyor, but the present invention is also applied to the case where the reinforcing fiber is mixed in the raw material in advance.

[0019]

As is apparent from the above description, the apparatus for continuously producing a refractory flat plate according to claim 1 cuts mortar into a liquid permeable belt and then pressurizes it with a roll, so that the packing density is It is possible to produce a high-strength refractory flat plate having high strength and low water permeability. Further, since it can be manufactured continuously, a mold is not required. Furthermore, since the pressure is applied by the pressure mechanism, the occurrence of blow holes and the like is extremely small.

[Brief description of drawings]

FIG. 1 is a schematic side view of a continuous refractory plate manufacturing apparatus according to the present invention.

2 is a sectional view taken along the line AA in FIG.

[Explanation of symbols]

 10 Refractory Flat Plate Manufacturing Equipment 11 Filter Cloth Belt 12 Conveyor 13 Mortar 14 Mortar Storage Hopper 15 Vacuum Tank 16 Pressurizing Mechanism 17 Traveling Cutting Machine 18 Reverse Roll 19 Guide Member 20 Guide Member 21 Drive Roll 23 Lower Roll 24 Pressing Roll 25 Upper belt 26 Drive roll 27 Reverse roll 28 Guide roll 29 Tension roll 30 Spring 31 Spring 32 Cylinder 33 Conveyor 34 Payoff reel 35 Reinforcing fiber 36 Bearing 37 Bearing 38 Bearing 39 Bearing 40 Housing 41 Housing 42 Housing 43 Housing 44 Supporting member 45 Pressurization zone

Claims (1)

[Claims] 1. A mortar storage hopper that stores mortar and gradually cuts out the mortar, a conveyor using a liquid permeable belt that receives the mortar cut out from the mortar storage hopper, and a lower portion of the liquid permeable belt. A dehydration mechanism that absorbs the water content of the mortar through the liquid-permeable belt, a pressurizing mechanism that press-molds the mortar from above and below, and a cutting process that cuts the cement flat plate that has passed through the pressurizing mechanism into a predetermined length. An apparatus for continuous production of refractory flat plates, characterized by being provided with a slicing machine.