JPH05116132A - Mortar preparing, stirring, pressure feeding and injection device - Google Patents

Abstract

(57) [Summary] [Purpose] Cement and fine aggregate such as sand can be mixed rapidly with high accuracy, and they can be mixed evenly and laid without waste, improving mortar quality and construction. Provided is a mortar mixing / stirring pressure feeding / injection device capable of saving labor. [Constitution] Cement-resist hopper 1 for accommodating cement, and sand-resist hopper 2 for accommodating fine aggregate such as sand
And a measuring screw 3 arranged so as to face the discharge ports of the resist hoppers 1 and 2, and the measuring screw 3 includes a single-thread screw groove 3a and a multiple-thread screw groove 3b.
And the single-thread screw groove 3a faces the discharge port of the cement resin hopper 1, and the multi-thread screw groove 3a
b faces the discharge port of the sand resist hopper 2.
In addition, a large number of spiral agitating and pressure-feeding elements 13 are pin-connected in the flexible hose 12 which is highly flexible.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mortar formulation in which cement and fine aggregate such as sand are blended and kneaded (blank), and then water is added immediately before construction and the mixture is injected at a predetermined casting location.・ Agitation pressure feeding / injection device.

[0002]

2. Description of the Related Art As conventional mortar construction, I) a case using a plastering mortar mixer and a mortar pump, or I)
I) There are hand kneading mortar manufacturing and laying equipment, and each has the following problems.

I) Mortar mixer for plastering and mortar pump Since the materials are mixed by weighing with a bucket or the number of times of addition with a scoop, the mixing is not constant in many cases. In some cases, the material adheres to the periphery of the mixer and is not agitated sufficiently. Suitable for transporting a large amount of mortar to one place,
When intermittently using little by little, the mortar is hardened in the transfer hose and may be blocked in the transfer route. The manufacturing / transportation system consists of a mixer section, a pump section, and a transfer hose section, which is suitable for use at fixed positions,
It is not suitable when using a small amount of mortar at one time and moving frequently. After use, the mortar in the hose is kneaded with sand, cement, and water, so if it is not used up properly, the material will be wasted and it will take time to clean the inside of the equipment. The mortar tends to store a large amount of mortar in the filter box, and the mortar that has started to harden after the pot life is used, which may lead to deterioration in strength. When laying mortar using the PC construction method, plasterers take mortar little by little from the melt box and lay it on the construction site with a trowel, so the laying amount is not constant and there are too many gaps. This may cause insufficient bearing capacity or sound leakage.

II) Laying apparatus for manufacturing hand-kneaded mortar The materials are mixed by weighing with a bucket by a plasterer or the like,
Or it may depend on intuition and experience, and it may not be possible to obtain a certain amount of formulation. The agitation of the material may be insufficient because it is kneaded in a filter box. The amount of mortar used at one time may be relatively small and some may remain in the construction of the floor mortar etc. of the PC method, and at the time of the next panel assembly, the remaining mortar that has started hardening may be added and kneaded, so that the mortar has a constant quality. May not be obtained. As with the previous method, laying mortar may cause insufficient strength and sound leakage.

[0005]

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems of the prior art. The object of the present invention is to rapidly and accurately bond cement and fine aggregate such as sand with high accuracy. An object of the present invention is to provide a mortar mixing / stirring pressure feeding / injection device which can be mixed, can be uniformly mixed, can be laid without waste, and can improve the quality of mortar and save labor in construction.

[0006]

Means for Solving the Problems A mortar blending apparatus of the present invention faces a cement resist hopper for containing cement, a sand resist hopper for containing fine aggregate such as sand, and a discharge port of these resist hoppers. The measuring screw is arranged, the measuring screw has a single-thread screw groove and a multiple-thread screw groove, the single-thread screw groove faces the discharge port of the cement resin hopper, the multiple-thread screw groove. Faces the discharge port of the sand resist hopper. The cement resist hopper and / or the sand resist hopper are provided with a stirring means or a flow rate adjusting means.
Further, the mortar agitation pumping device of the present invention has a large number of spiral agitation pumping elements connected in a pin in a flexible hose having a high degree of flexibility, and the front and rear spiral edges of the pin connection part face each other in an orthogonal manner. It is characterized by further,
The mortar injection device of the present invention is a cylinder through which mortar is passed,
It is characterized by comprising an empty kneading mortar opening / closing valve rotatably provided in the cylindrical body, and a water injection nozzle arranged on the inner surface of the cylindrical body downstream of the mortar opening / closing valve. It is also characterized in that the opening / closing valve of the water injection nozzle and the empty kneading mortar opening / closing valve are simultaneously operated by an operating rod.
Further, the invention is characterized in that an injection guide port is attached to the tip end portion of the cylindrical body.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. In FIG. 1, A is a blender, which blends cement and sand at a predetermined ratio, and pressure-feeds them while kneading them with a stirring and conveying hose B, and a mortar injector C.
By this, mortar is laid at a predetermined place.

As is clear from FIGS. 2 and 3, the compounding machine A has a cement resist hopper 1 mainly containing cement and a sand resist hopper 2 containing sand.
And a measuring screw 3 which mixes these cement and sand in an appropriate ratio. Reference numeral 4 is a drive motor, which is adapted to rotationally drive the stirring rotors 8 and 9 via the gear reduction device 5 and the worm gears 6 and 7.
Metering discharge devices 10 and 11 are provided at the lower discharge ports of the hoppers 1 and 2, respectively.

The measuring screw 3 comprises a single-thread screw groove 3a and a multi-thread screw groove 3b.
The single-thread screw groove 3a is a single-thread screw groove that only receives cement and faces the discharge port of the cement resist hopper 1. The multi-thread screw groove 3b is formed with a multi-thread (three threads in this embodiment) screw groove capable of receiving sand in addition to the cement, and one of the screw grooves is the single screw 3a.
In succession.

An agitating and conveying hose B is connected to the outlet of the measuring screw 3. The stirring and conveying hose B
Is composed of a flexible hose 12 that is highly flexible and can change its direction freely, and a large number of stirring and pressure-feeding elements 13 that rotate within the flexible hose 12.

As shown in FIG. 4, the stirring and pressure-feeding element 13 is used.
The spiral plate 13a has a short length of several pitches and is pin-connected so as to be rotatable with respect to each other so that the stirring and conveying hose B can be freely bent with sufficient flexibility. The pin connecting portions 13b and 13c at both ends are oriented so that their rotation directions are orthogonal to each other, and both end edges 13a 'and 13a "of the spiral plate 13a are formed to face the same direction. Therefore, the front and rear edges 13a 'and 13a "sandwiching the pin connection portion 13c face each other so as to be orthogonal to each other. The pin connection may be a universal joint.

In FIGS. 2 and 3, reference numeral 14 is a water tank to which a water receiving hopper 14a is attached. 15 is a water pressure pump, 16 is a water pressure hose, 1
7 is a stop valve.

The above-mentioned respective equipments are mounted on a carriage 18. The dolly 18 can run while freely changing its direction by means of wheels 19 and casters 20.

A mortar injector C is attached to the tip of the stirring and conveying hose B. The mortar injector C
As shown in FIGS. 5 and 6, it is mainly composed of a tubular body 21 through which mortar is passed, an empty kneading mortar opening / closing valve 22 provided in the middle of the tubular body 21, and a water injection nozzle 23. As is apparent from FIG. 7, the water injection nozzle 23 is arranged on the inner peripheral portion of the cylindrical body 21.

The injection guide 2 is attached to the tip of the cylindrical body 21.
4 is detachably attached. Reference numeral 25 denotes an opening / closing lever, which is configured to open / close by interlocking the empty kneading mortar opening / closing valve 22 and the water opening / closing valve 27 via an operating rod 26.

Next, the operation of the mortar mixing / stirring pressure feeding / injection device of the above embodiment will be described. First, the cement is put into the cement resist hopper 1 and the sand is put into the sand resist hopper 2. Then, the drive motor 4 is operated and the stirring rotors 8 and 9 are rotated to stir the cement and sand. In this state, the metering and discharging devices 10 and 11 are operated to discharge cement and sand. The metering and discharging devices 10 and 11 also adjust the variation of the mortar strength due to the particle size distribution of sand and the like, and thus also have a function of finely adjusting the mixing ratio to always produce an optimum mortar.

Since the single screw groove 3a of the measuring screw 3 faces below the discharge port of the cement resist hopper 1, the discharged cement enters the single screw groove 3a. The cement contained in the single-thread screw 3 a is sent toward the discharge port of the sand resist hopper 2 as the measuring screw 3 rotates.

The measuring screw 3 below the discharge port of the sand resist hopper 2 is provided with a multi-thread screw groove 3b, and one of the screw threads communicates with the single-thread screw groove 3a. The cement from the resist hopper 1 is sent in in a stored state, and the remaining screw groove 3b is empty. Therefore, the sand discharged while being metered from the sand resist hopper 2 is accommodated in the empty screw groove 3b and sent to the stirring and conveying hose B.

In the stirring and conveying hose B, the flexible hose 12 is made of a highly flexible material, and the stirring and pressure-feeding elements 13 are rotatably pin-connected to each other. It can be operated.

Further, since the stirring pumping element 13 is connected so that the front and rear edges 13a ', 13a "of the pin connecting portion face each other in an orthogonal state, the stirring pumping element 13 on the upstream side is connected to the downstream side. As shown in FIG. 8, the material conveyed to the stirring and pressure-feeding element 13 is divided into two materials G1 and G2 by the edge 13a ″ breaking into the central portion of the material G. Since this dividing action is performed on the materials on both sides of the spiral plate 3a, the divided materials on both sides are merged and mixed in the next stirring and pressure-feeding element 13. This dividing / mixing action is repeated every time it moves to the stirring and pressure-feeding element 13 on the downstream side. As a result, the mortar and the sand are kneaded, and are gradually homogenized and sent to the mortar injector C. ..

The dry kneading mortar sent to the mortar injector C is injected while the flow rate is adjusted by opening and closing the dry kneading mortar opening / closing valve 22. Water is injected from the water injection nozzle 23 into the dry kneading mortar that has been injected from the dry kneading mortar opening / closing valve 22 to be kneaded mortar, which is then injected from the injection nozzle 24.

[0022]

【The invention's effect】

1) A cement resist hopper for storing cement, a sand resist hopper for storing fine aggregates such as sand, and a measuring screw arranged facing the discharge port of these resist hoppers. Since it has a screw groove and a multiple-thread screw groove, the single-thread screw groove faces the discharge port of the cement resin hopper, and the multi-thread screw groove faces the discharge port of the fine aggregate resist hopper. The cement and sand can be mixed automatically and accurately. 2) A large number of spiral stirring and pressure-feeding elements are pin-connected in a flexible hose having a high degree of flexibility, and the spiral edges at the front and rear of the connecting parts face each other at right angles, so that the cement and sand transfer hose While being pumped inside, it is automatically stirred well. 3) It is composed of a cylinder through which mortar is passed, an empty kneading mortar opening / closing valve rotatably provided in the cylinder, and a water injection nozzle arranged on the inner surface of the cylinder on the downstream side of the mortar opening / closing valve. Can be mixed immediately before injection, and the required amount of kneading mortar can always be injected, resulting in no waste. Also, mortar laying work can be done in a standing posture, and workability is good. Furthermore, mortar can be laid continuously and accurately with a constant width and thickness. 4) After use, by stopping water injection and operating for a while, empty kneaded mortar in the mortar blender and transfer hose can be recovered, and can be reused again without waste and easy cleaning. is there. 5) The device of the present invention can be used in the following applications. As a laying machine for laying mortar when assembling PC boards. As a mortar filling machine around floor joints or sashes. As a conveyor and laying machine for premix mortar. In this case, only the transport function and the water kneading function are required, and the size can be further reduced. Work that requires mortar intermittently, such as various concrete blocks and masonry. As a mortar filling machine for wall and ceiling joints by improving the shape of the hose and tip nozzle. As a pouring machine for the production of bean gravel concrete by improving the material mixing section.

[Brief description of drawings]

FIG. 1 is an explanatory view of a usage state of a mortar mixing / stirring pressure feeding / injection device of the present invention.

FIG. 2 is a vertical sectional view of a mixer of the mortar mixing / stirring pressure feeding / injection device.

FIG. 3 is a cross-sectional view taken along the line EE of FIG.

FIG. 4 is an enlarged view of a stirring and pressure feeding element.

FIG. 5 is a vertical sectional view of a mortar injection nozzle.

FIG. 6 is a top view of a mortar injection nozzle.

FIG. 7 is a cross-sectional view taken along the line Loro of FIG.

FIG. 8 is an explanatory view of the action of the stirring pressure-feeding element.

[Explanation of symbols]

 1 Cement-resist hopper 2 Sand-resist hopper 3 Measuring screw 3a Single-start screw groove 3b Multi-start screw groove 4 Drive motor 5 Gear reduction device 6 Worm gear 7 Worm gear 8 Stirring rotor 9 Stirring rotor 10 Metering discharge device 11 Metering discharge Device 12 Hose 13 Stirring pumping element 13a Spiral plate 13b Pin connection part 13c Pin connection part 13a 'Edge 13a "Edge 14 Water tank 15 Water pressure pump 16 Water pressure supply hose 17 Water stop valve 18 Bogie 19 Wheels 20 Casters 21 Cylindrical body 22 Mortar Open / Close Valve 23 Water Injection Nozzle 24 Injection Guide 25 Open / Close Lever 26 Actuating Rod 27 Water Open / Close Valve A Blender B Stirrer Conveying Hose C Mortar Injector

Claims (7)

[Claims] 1. A cement resist hopper for accommodating cement, a sand resist hopper for accommodating fine aggregates such as sand, and a measuring screw arranged so as to face the discharge ports of these resist hoppers. Having a single-thread screw groove and a multiple-thread screw groove, the single-thread screw groove facing the discharge port of the cement resin hopper, and the multi-thread screw groove facing the discharge port of the sand resist hopper. A mortar blending device. 2. The cement resist hopper and / or
Alternatively, the mortar mixing apparatus according to claim 1, wherein a stirring means is provided in the sand resist hopper. 3. The cement resist hopper and / or
3. The mortar blending device according to claim 1, wherein a flow rate adjusting means is provided at the discharge port of the sand resist hopper. 4. A large number of spiral stirring and pressure-feeding elements are pin-connected in a flexible hose having a great flexibility, and the front and rear spiral edges of the pin connecting portion face each other at right angles. A mortar agitation pumping device. 5. A cylinder through which mortar is passed, an empty kneading mortar opening / closing valve rotatably provided in the cylinder, and a water injection nozzle arranged on the inner surface of the cylinder downstream of the mortar opening / closing valve.
A mortar injection device comprising: 6. The mortar injection device according to claim 5, wherein the opening / closing valve of the water injection nozzle and the empty kneading mortar opening / closing valve are simultaneously operated by an operating rod. 7. The mortar injection device according to claim 5, wherein an injection guide port is attached to the tip of the cylindrical body.