JPH0724525Y2 - Dry mortar and concrete spraying equipment - Google Patents

Description

[Detailed Description of the Invention] (Industrial field of application) The present invention, for example, when spraying mortar, concrete, etc. onto an inclined surface or the like to construct a retaining wall, etc. The present invention relates to a dry mortar and a concrete spraying device which can be sprayed after sufficiently mixing an appropriate liquid such as water or a chemical liquid on aggregate and cement which have been agitated and kneaded in advance in such a state.

(Prior art) Conventionally, when spraying mortar, concrete, etc. onto an appropriately inclined surface, etc., the mortar, concrete, etc. were previously stirred and kneaded, and then sprayed on the hose end by a mortar, concrete spraying machine as appropriate. It was spraying from the nozzle. That is, the spray nozzle itself has a structure capable of spraying mortar, concrete or the like that has been stirred and kneaded in advance linearly toward the inclined surface or the like.

In addition, while the aggregate and cement that have been previously stirred and kneaded in a dry state are sent to the spray nozzle by air through a hose, water is also appropriately sent into the hose from a hole, and the water is sprayed inside the spray nozzle. It is also practiced to mix and spray the aggregate with cement and the like (for example, a lining method and a lining device as disclosed in JP-A-61-10672, and
-Spraying material water addition device as described in 201442).

(Problems to be solved by the invention) However, in the conventional dry mortar and concrete spray nozzle, when water is appropriately fed into the hose from the hole,
Since the feeding speed of aggregate and cement in the hose is relatively fast, even if the feeding pressure of water is considerably increased or the number of water ejection holes is considerably increased, However, it was sprayed without being sufficiently and surely mixed in the spray nozzle, and therefore, there was a possibility that the aggregate, the cement, and the like would be dust and scattered around when spraying.

(Means for Solving the Problems) Therefore, the present invention has been devised to solve the above-mentioned problems. Specifically, mortar, concrete or the like is appropriately provided on an inclined surface to construct a retaining wall or the like. When spraying, etc., the aggregate and cement, etc. that have been agitated and kneaded in a dry state in advance are fed into the hose by air, and during the feeding, an appropriate liquid such as water or chemical solution is mixed. In a dry mortar and concrete spraying device that can be sprayed from, it is connected to a hose 10 that feeds aggregate and cement that have been agitated and kneaded in advance, and a base end with a considerably larger cross-sectional area than the hose 10. The blowing cylinder body 1 is formed by the cylindrical portion 2 and the distal end cylinder portion 3 which is connected to the distal end portion of the proximal end cylinder portion 2 and whose cross-sectional area is considerably smaller than that of the proximal end cylinder portion 2. Both ends of the proximal tube portion 2 of A mixing mechanism A for supplying an appropriate liquid such as water or a chemical liquid into the spray cylinder body 1 is provided in the proximal end cylinder portion 2 and is formed in a taper shape such that its diameter gradually decreases as it goes to the gutter. In this mixing mechanism A, a plurality of liquid ejection small holes 5 are bored in the circumferential wall of the base end cylindrical portion 2 along the circumferential direction, and a mixing groove 7 surrounding the plurality of liquid ejection small holes 5 is provided. The case 6 is fixed to the outer surface of the peripheral wall of the base end tube portion 2,
A means for forming a hose 11 for supplying a suitable liquid such as water or a chemical liquid at high pressure to the mixing mechanism A so that it can be connected to the mixing case 6 is adopted.

(Operation) Then, when the aggregate and the cement, etc., which have been previously stirred and kneaded in a dry state, the moving speed of the aggregate and the cement, when fed from the hose 10 to the proximal end tube portion 2, are greatly reduced and the proximal end tube portion is It will be in a state of being fully dispersed in 2. Then, a plurality of liquid ejection small holes 5 in which an appropriate liquid such as water or a chemical liquid is provided along the circumferential direction.
When the aggregate and the cement and the like are ejected at a high pressure from this, and the aggregate and the cement and the like pass through this portion, the aggregate and the cement and the like are properly mixed with the appropriate liquid such as water or a chemical solution. Further, mortar, concrete, etc. in a good mixing state are fed from the base end tube portion 2 to the tip end tube portion 3, and at this time, the moving speed thereof is greatly increased and the spray pressure is increased. ,
It is sprayed to the outside of the spraying device S. Moreover, the proximal tube portion 2 is
Due to the tapered portions at both ends thereof, the aggregate and the cement, etc., which have been stirred and kneaded in a dry state in advance, are smoothly fed from the hose 10 into the proximal end tube portion 2 so that the aggregate and the cement can be protected from water and the like. Concrete, mortar, etc., in which liquids are appropriately mixed, are smoothly fed from the base end tube portion 2 into the tip end tube portion 3.

(Example) Hereinafter, the present invention will be described with reference to illustrated examples.

In the figure, S indicates that when mortar, concrete, etc. are sprayed on the inclined surface etc. to construct a retaining wall, etc., the aggregate and cement, which have been previously agitated and kneaded in a dry state, are fed into the hose 10 by air. The dry mortar and concrete spraying device of the present invention, which is capable of being sprayed and then sprayed with a suitable liquid such as water or a chemical liquid during the feeding, is shown. The hose 10 is connected to the hose 10 and has a substantially cylindrical cross-sectional area (large diameter) that is substantially cylindrical (base diameter). A spray cylinder body 1 made of a suitable synthetic resin or a metal, which is composed of a substantially cylindrical tip cylinder portion 3 having a cross-sectional area considerably smaller than that of 2 (small diameter), is formed, and the base end of the spray cylinder body 1 is formed. Appropriate liquid such as water or chemical liquid such as quick-drying agent in the tube portion 2 And it is configured to provide a mixing mechanism A for feeding. That is, aggregate and cement that have been previously mixed and kneaded in the dry state are air
Along with the delivery to the inside of 10, the base tube portion 2 is fed, and at this time, an appropriate liquid such as water or a chemical liquid is fed to the base tube portion 2 at a high pressure, It is configured such that an appropriate liquid such as water or a chemical liquid, an aggregate and cement are sufficiently mixed and then sprayed.

In the mixing mechanism A, a plurality of liquid ejection small holes 5 are bored in the circumferential wall of the base end cylinder portion 2 along the circumferential direction, and a communication groove 7 surrounding the plurality of liquid ejection small holes 5 is provided in a substantially annular shape. The mixing case 6 is fixed to the outer surface of the peripheral wall of the base end tube portion 2. Moreover, a hose mounting portion 8 to which a hose 11 for supplying an appropriate liquid such as water at a high pressure can be mounted in the mixing mechanism A is formed continuously with the mixing case 6.

The base tube portion 2 of the spray tube body 1 includes a hose 10 and a base tube portion 2,
Each of the connecting portions of the proximal end tube portion 2 and the distal end tube portion 3 is formed in a relatively smooth taper shape such that the diameter thereof gradually decreases as the tip ends in a crocodile shape, and is agitated and kneaded in advance in a dry state. It is considered that the aggregate and the cement, or concrete, mortar, or the like in which an appropriate liquid such as water or a chemical liquid is mixed, can smoothly move in the proximal end tube portion 2.

In the figure, 12 is a valve with a flow meter capable of adjusting the flow rate of water.

The liquid ejection small holes 5 may be arranged in parallel with each other along the circumferential direction of the base end tube portion 2, or the liquid ejection small holes 5 may be arranged spirally. However, it is also possible to adopt any other suitable arrangement.

By the way, as shown in FIG. 1, the mixing mechanism A may be arranged only in the base end tube portion 2, or as shown in FIG. 3, an auxiliary mixing mechanism A1 is provided side by side with the tip end tube portion 3, It is also possible to obtain a more reliable mixing state of the aggregate, cement, etc. and an appropriate liquid such as water. That is, the auxiliary mixing mechanism A1 is provided with a plurality of liquid ejection small holes 5a in the circumferential wall of the distal end tube portion 3 along the circumferential direction, and also has a communication groove 7a surrounding the plurality of liquid ejection small holes 5a. A substantially ring-shaped mixing case 6a is fixed to the outer surface of the peripheral wall of the distal end tube portion 3, and a hose attachment portion 8a to which a hose 11a for feeding a suitable liquid such as water at high pressure can be attached is continuously provided in the mixing case 6a. Is configured.

By the way, the specific configuration, shape, size, and material of the spray tube main body 1, the specific shape, size, material, and the distal end tube part 3 of the base end tube portion 2.
The specific shape, size, material, size, shape, number, drilling position, and specific shape of the mixing case 6 of the small body ejecting small holes 5 are not limited to those shown in the drawings, but can be freely set. it can.

The spraying device S of the present invention is constructed as described above. Next, an example of its use will be described. First, the aggregate and cement which have been previously agitated and kneaded in a dry state are aired through the hose 10. In addition to being fed into the proximal end tube portion 2, an appropriate liquid such as water or a chemical liquid (for example, a quick-drying agent) is fed into the mixing case 6 at high pressure through the hose 11. Then, a plurality of liquid ejection small holes 5 in which the liquid is appropriately bored along the circumferential direction.
Is ejected at high pressure into the proximal tube portion 2, and the aggregate, the cement, and the like pass through this portion, and the liquid, the aggregate, the cement, and the like are appropriately mixed. Then, mortar and concrete made by sufficiently mixing liquid with aggregate and cement, etc. are jetted from the tip portion of the tip tube portion 3 and sprayed to a desired position.

(Effects of the Invention) Therefore, the present invention, when spraying mortar, concrete, etc. onto an inclined surface as appropriate to construct a retaining wall, etc., air the aggregate and cement etc. that have been agitated and kneaded in advance in a dry state. The hose is fed by and while it is being fed,
In a dry mortar and concrete spraying device that can be sprayed after mixing an appropriate liquid such as water or chemical liquid,
It is connected to a hose 10 that feeds aggregate and cement that have been agitated and kneaded in advance, and is also connected to a base end tube portion 2 having a considerably larger cross-sectional area than the hose 10 and a tip end portion of the base end tube portion 2. At the same time, the spray tube body 1 is formed by the tip cylinder portion 3 having a considerably smaller cross-sectional area than the base cylinder portion 2.
The proximal tube portion 2 is formed in a taper shape such that its both ends gradually decrease in diameter as the tip ends in a crocodile shape, so that an appropriate liquid such as water or a chemical solution is fed into the spray tube body 1. The mixing mechanism A is provided in the base end cylinder portion 2, and the mixing mechanism A has a plurality of liquid ejection small holes 5 formed in the circumferential wall of the base end cylinder portion 2 along the circumferential direction and the plurality of liquid ejection openings 5 A hose 11 configured to fix a mixing case 6 having a communication groove 7 surrounding the small hole 5 to the outer surface of the peripheral wall of the base end cylinder 2 and to supply a suitable liquid such as water or a chemical liquid to the mixing mechanism A at high pressure. Since it is formed so that it can be connected to the mixing case 6, when aggregate and cement, etc., which have been agitated and kneaded in a dry state in advance, are fed by air from the hose 10 into the proximal tube portion 2. , The movement speed can be reduced sufficiently , Aggregate and cement, etc.
The liquid can be fully dispersed in the inside, while a suitable liquid such as water or a chemical liquid can be jetted at a high pressure from a plurality of liquid jet small holes 5 formed along the circumferential direction of the proximal end tube portion 2. The aggregate and the cement and the like pass through this jetted portion, and the aggregate and the cement and the like can be mixed uniformly and surely with an appropriate liquid such as water or a chemical solution. By the way,
At the time of spraying, there is no risk that aggregates, cement, etc. will become dust and scatter around.

In particular, the tip end tube portion 3 having a cross-sectional area much smaller than the base end tube portion 2
Is connected to the distal end portion of the proximal tube portion 2, so that when mortar, concrete, etc. in a good mixing state are fed to the distal tube portion 3, the moving speed thereof can be greatly increased. At the same time, after increasing the spray pressure, the spray can be strongly and far out of the spray device S.

Further, since the base end tube portion 2 of the spray tube main body 1 is formed in a taper shape such that both ends thereof gradually become smaller in diameter as the tip ends in a crooked manner, bones that have been previously agitated and kneaded in a dry state The material and cement can be smoothly fed from the hose 10 into the proximal tube portion 2, and concrete, mortar, etc. in which an appropriate liquid such as water or a chemical solution is mixed with the aggregate and the cement can be used as the proximal end. It is possible to smoothly feed from the tubular portion 2 into the tip tubular portion 3.

Further, a plurality of liquid ejection small holes 5 are bored in the circumferential wall of the base end tube portion 2 along the circumferential direction, and the plurality of liquid ejection small holes 5 are formed.
A mixing case 6 having a communication groove 7 that surrounds is fixed to the outer surface of the peripheral wall of the base end cylinder portion 2.
Since the hose 11 for supplying a suitable liquid such as water at a high pressure is connectable to the hose, the suitable liquid such as water can be smoothly supplied from the hose mounting portion 8 into the spray tube main body 1.
It becomes possible to uniformly and uniformly mix an appropriate liquid such as water or a chemical liquid to the aggregate and the cement in the proximal end tube portion 2.

[Brief description of drawings]

The drawings illustrate the present invention. FIG. 1 is a vertical sectional side view of a spraying device, FIG. 2 is a vertical sectional front view of a spraying device, and FIG. 3 is a vertical side view of a spraying device in another embodiment. is there. S ... Spraying device, 1 ... Spraying tube main body, 2 ... Base end cylinder part,
3 ... Tip cylinder part, A ... Mixing mechanism, A1 ... Auxiliary mixing mechanism, 5 ... Liquid ejection small hole, 5a ... Liquid ejection small hole, 6 ... Mixing case, 6a ... Mixing case, 7 ... Communication groove, 7a ... Communication groove, 8 ... Hose mounting part, 8a ... Hose mounting part, 10 ... Hose, 11 ... Hose, 11a ... Hose, 12 ... Valve with flow meter.

Claims (1)

[Scope of utility model registration request] 1. When spraying mortar, concrete or the like onto an inclined surface or the like to construct a retaining wall or the like, the aggregate and cement, which have been previously agitated and kneaded in a dry state, are fed into the hose by air. In addition to the above, the dry mortar and concrete spraying equipment, which can be sprayed after mixing appropriate liquid such as water or chemicals during the feeding, send the aggregate and the cement that have been agitated and kneaded in advance. In addition to being connected to the hose to be supplied, it is also connected to the base end cylinder part whose cross-sectional area is considerably larger than the hose and the tip end part of this base end cylinder part
The spray tube main body is formed by the tip cylinder part whose cross-sectional area is considerably smaller than the base end cylinder part. The taper is formed into a tapered shape, and a mixing mechanism is provided on the base end cylinder part for supplying an appropriate liquid such as water or chemical liquid into the spray cylinder body. This mixing mechanism is designed to eject multiple liquids on the peripheral wall of the base end cylinder part. A small case is formed along the circumferential direction, and a mixing case having a communication groove that surrounds the plurality of liquid ejection small holes is fixed to the outer surface of the peripheral wall of the proximal end cylinder portion.
A dry mortar and concrete spraying device, characterized in that a hose for supplying an appropriate liquid such as water or a chemical liquid to the mixing mechanism at high pressure is formed so as to be connectable to the mixing case.