JP7142401B1 - Spraying machine - Google Patents

Abstract

An object of the present invention is to provide a spray gun capable of preventing the occurrence of pulsation even in continuous use and enhancing the safety and work efficiency of the operator. A first balancer (11) for storing pressurized air from a compressor (10) is provided. A second balancer 12 is provided between the first balancer 11 and the upper drum 1 . Pressurized air from the first balancer 11 is stored in the second balancer 12 . The internal pressure of the upper drum 1 is maintained by pressurized air from the second balancer 12 . The first balancer 11 adjusts the pressure of the lower drum 2 and the air supply nozzle 6 . [Selection diagram] Fig. 1

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sprayer capable of continuously and stably feeding pressurized air from a compressor into a feed hose.

In this type of spraying machine, materials such as cement, sand, water, or gravel are stirred in an upper drum to produce a sprayed product, which is further stirred in a lower drum and then sprayed from the tip of a feed hose. Configured to spray.

The present applicant previously proposed a pressurized air supply device described in Patent Document 1. In a general spraying machine, a first pipeline A1 that feeds pressurized air into the upper drum 1 and a second pipeline A2 that feeds pressurized air into the lower drum 2 are used to is adjusted to the same pressure as in the lower drum.

However, since the pressure of the pressurized air that feeds the sprayed material from the lower drum to the feed hose decreased, a third pipeline A3 that feeds the pressurized air to the feed hose 7 was formed. A receiver tank 11 is interposed in the pipeline A3. As a result, pressurized air can be continuously supplied to the supply hose 7.

Utility Model Registration No. 3087658

The apparatus of Patent Document 1 enables continuous supply of pressurized air to the supply hose. However, it was found that an unstable phenomenon called pulsation occurs in each drum and the supply hose when the spray material is continuously sprayed from the supply hose.

That is, when the spraying material is continuously sprayed, it is necessary to pressurize the upper drum when the material moves from the upper drum to the lower drum and when the lower shutter is opened. At this time, air is used to pressurize the upper drum, and pulsation occurs due to lack of air available for the feed hose. Then, when this pulsation occurs, the feeding hose begins to run wild, causing a new inconvenience that it becomes difficult to keep holding the feeding hose.

In particular, this type of spraying machine is used for construction work in which mortar, concrete, etc. is sprayed from a feed hose onto a slope made of cut or embankment, and hardened. become dangerous.

In order to prevent the occurrence of this pulsation, the work of stirring and moving the material in the upper drum and the lower drum and the work of spraying the material from the feed hose are carried out separately. If so, the spraying work will be interrupted, so that the work efficiency will be deteriorated and the work time will be extended.

On the other hand, if an attempt is made to continue the spraying work even if pulsation occurs in order to shorten the working time, handling of the raging feed hose becomes dangerous, and the worker's degree of fatigue increases. Moreover, it becomes difficult to control the feed hose, and there is a risk that the spray material such as concrete or mortar will be sprayed onto unnecessary locations.

Therefore, the present invention was created to solve the above-mentioned problems, and provides a spray gun that can prevent the occurrence of pulsation even when used continuously, and can improve the safety and work efficiency of the operator. It is intended.

In order to achieve the above object, the first means in the present invention is to agitate in the upper drum 1 to produce a sprayed material, further agitate it in the lower drum 2, and then install it at the discharge port of the lower drum 2. In a spraying machine that sprays a sprayed material from a supply hose 7 with pressurized air from an air supply nozzle 6,
a first balancer 11 for storing pressurized air from the compressor 10; a second balancer 12 interposed between the first balancer 11 and the upper drum 1 for storing the pressurized air from the first balancer 11 ; an upper intake pipe line A1 that feeds pressurized air from the second balancer 12 to the upper drum 1; a lower intake pipe line A2 that feeds pressurized air from the first balancer 11 to the lower drum 2; A material feed pipe line A3 for feeding pressurized air from the first balancer 11 to the air feed nozzle 6, an upper intake valve B1 provided in the upper intake pipe line A1, and a A lower intake valve B2, a material feed valve B3 provided in the material feed pipe line A3, an upper shutter 3 for opening and closing the upper communication passage of the upper drum 1, and a lower shutter for opening and closing the lower communication passage of the lower drum 2. 4 and
The upper intake valve B1, the lower intake valve B2, the material feed valve B3, the upper shutter 3, and the lower shutter 4 are operated in a predetermined manner, and the sprayed material is discharged from the lower drum 2 to the air feed nozzle 6. During transfer, the internal pressure of the lower drum 2 is controlled to be higher than the feed pressure of the air feed nozzle 6,
When the material to be sprayed is transferred from the upper drum 1 to the lower drum 2, the internal pressure of the upper drum 1 and the internal pressure of the lower drum 2 are controlled to be equal to each other. The spraying machine is constructed such that stirring and transfer of the sprayed material by the drum 2 and spraying of the sprayed material by the air supply nozzle 6 are performed simultaneously .

According to the present invention, it was possible to prevent the occurrence of pulsation even when the sprayed material was continuously sprayed. As a result, during the spraying operation, there is no danger that the supply hose 7 will run out of control due to pulsation, and the safety during the spraying operation can be greatly enhanced.

Moreover, since the material can be agitated even during the spraying operation and the sprayed product can be continuously manufactured, the working efficiency can be improved and the working time can be shortened. Therefore, worker safety and work efficiency can be enhanced.

Furthermore, when the material is sprayed from the supply hose 7, the pressure in the lower drum 2 is adjusted to be higher than the pressure of the air supply nozzle 6, thereby smoothing the movement of the material to be sprayed and It also had the effect of blowing objects farther and more stably. As a result, it is possible to smoothly carry out the work of spraying upward from the lower side to the slope formed by cutting, embanking, or the like.

In addition, there is also an economic effect that the fuel consumption of the compressor and generator can be suppressed by shortening the working time.

1 is a schematic diagram illustrating a spraying machine of the present invention; FIG. It is a front view which illustrates the spraying machine of this invention. It is a side view which illustrates the spraying machine of this invention.

The spraying machine of the present invention is a spraying machine that agitates and manufactures a sprayed material between an upper drum 1 and a lower drum 2 and sprays the sprayed material from a supply hose 7 with pressurized air from an air supply nozzle 6 .

That is, in the spraying machine of the present invention, first, cement, sand, water, or a material obtained by adding gravel to these materials is charged into the upper drum 1 from the hopper 5, and then the upper communication passage is closed by the upper shutter 3, and the upper drum The material in 1 is stirred and kneaded with a stirring blade to produce a sprayed product.

Furthermore, after gradually pressurizing the inside of the upper drum 1 to the same pressure as the inside of the lower drum 2 , the lower communication passage is opened by the lower shutter 4 to feed the sprayed material into the lower drum 2 . After that, the lower communication passage is closed by the lower shutter 4, and the sprayed material in the lower drum 2 is further agitated.

A spraying machine that uses the pressure of the pressurized air in the lower drum 2 to send the sprayed material to the air supply nozzle 6 and sprays the sprayed material from the supply hose 7 with the pressurized air of the air supply nozzle 6. is.

By using both the first balancer 11 and the second balancer 12 in this spraying machine, pulsation during the spraying operation is prevented.

The first balancer 11 stores pressurized air from the compressor 10 and supplies this pressurized air to the second balancer 12 and the lower drum 2 . An air supply nozzle 6 is provided at the discharge port of the lower drum 2 , and pressurized air from the air supply nozzle 6 is used to spray the object from a supply hose 7 . At this time, the pressure air from the first balancer 11 is used to adjust the internal pressure of the lower drum 2 and the feed pressure of the air feed nozzle 6 .

That is, the first balancer 11 has a lower intake pipe line A2 for supplying pressurized air from the first balancer 11 to the lower drum 2, and an air supply nozzle 6 for supplying pressurized air from the first balancer 11. and a material feeding pipeline A3.

The pressures of the lower drum 2 and the air feed nozzle 6 are adjusted by a lower intake valve B2 provided in the lower intake pipe A2 and a material feed valve B3 provided in the material feed pipe A3. there is

On the other hand, the second balancer 12 stores pressurized air from the first balancer 11 and supplies this pressurized air to the upper drum 1 . The second balancer 12 is provided with an upper intake pipe line A1 that supplies pressurized air to the upper drum 1. As shown in FIG.

The pressure of the upper drum 1 is adjusted via the upper intake valve B1 provided in the upper intake pipe A1.

Next, the air supply method of the present invention will be explained. When the sprayed material is agitated or transferred between the upper drum 1 and the lower drum 2, the pressure of each drum is adjusted to be equal. That is, when the material is put into the upper drum 1, the material is put in a state in which the pressurized air is exhausted from the inside of the upper drum 1 by closing the lower shutter 4. As shown in FIG. When the upper shutter 3 is closed and the pressures of the upper drum 1 and the lower drum 2 are adjusted to be equal and stirred, the stirred material can be transferred from the upper drum 1 to the lower drum 2. - 特許庁

Also, when spraying the object from the supply hose 7, the pressure inside the lower drum 2 is adjusted to be higher than the pressure of the air supply nozzle 6. - 特許庁Therefore, in order to agitate and transfer the material between the upper drum 1 and the lower drum 2 while spraying the spray material from the feed hose 7, the pressure of the upper drum 1 and the lower drum 2 should be higher than the pressure of the air feed nozzle 6. Must be set higher.

Although one compressor 10 is illustrated, it is also possible to use two compressors 10 . In this case, with the balancer intermediate valve B4 closed, the first compressor 10 is connected to the first balancer 11, and the second compressor 10 is connected to the second balancer 12 (not shown). As a result, the time for storing compressed air is shortened, and the spraying work can be performed more efficiently.

Also, the illustrated first balancer 11 is arranged horizontally, and the second balancer 12 is arranged vertically. In addition, both the first balancer 11 and the second balancer 12 use tanks with a capacity of less than 40L. This allows for compact mounting.

The spraying operation by the spraying machine of the present invention is as follows.
1 Air is sent from the compressor 10 and stored in the first balancer 11 .
2 Open the balancer intermediate valve B4 so that the air reaches the second balancer 12.
3 Start the motor to rotate the blades in the upper and lower tanks (not shown).
4 After opening the upper shutter 3 and charging two batches of material into the upper drum 1 through the hopper 5, the upper shutter 3 is closed and kneaded.
5 After opening the lower shutter 4 and dropping the material onto the lower drum 2, the lower shutter 4 is closed.
6 Open the material feeding valve B3 and let air flow through the air feeding nozzle 6.
7 With air flowing through the air supply nozzle 6, open the lower intake valve B2 so that the pressure in the lower tank becomes higher than the material supply air.
8 Spray the spray material from the feed hose 7.
9. In order to prepare the next material, the upper shutter 3 is opened, and after one batch of material is put into the upper drum 1 through the hopper 5, the upper shutter 3 is closed and kneaded.
10. To open the lower shutter 4, open the upper intake valve B1 to make the pressures of the upper drum 1 and the lower drum 2 equal.
11. When about one batch of material remains in the lower drum 2, the lower shutter 4 is opened to drop one batch of material onto the lower drum 2, and the lower shutter 4 is closed.
12 Open the upper exhaust valve (not shown) to exhaust air from the upper drum 1 .
Repeat steps 8 to 12 below.

In addition, each configuration of the present invention is not limited to the illustrated example, and the configuration can be arbitrarily changed without changing the gist of the present invention.

1 upper drum 2 lower drum 3 upper shutter 4 lower shutter 5 hopper 6 air supply nozzle 7 supply hose 10 compressor 11 first balancer 12 second balancer A1 upper intake pipe A2 lower intake pipe A3 material feed pipe B1 upper part Intake valve B2 Lower intake valve B3 Material feed valve B4 Balancer intermediate valve

Claims (1)

The sprayed material is produced by stirring in the upper drum, and after further stirring in the lower drum, the sprayed material is blown from the supply hose with pressurized air from the air supply nozzle provided at the discharge port of the lower drum. In the spraying machine to attach,
a first balancer that stores pressurized air from a compressor; a second balancer that is interposed between the first balancer and the upper drum to store the pressurized air from the first balancer; An upper intake duct that feeds pressurized air to the drum, a lower intake duct that feeds pressurized air from the first balancer to the lower drum, and pressurization from the first balancer to the air feed nozzle. a material feed pipe for feeding air, an upper intake valve provided in the upper intake pipe, a lower intake valve provided in the lower intake pipe, and a material feed valve provided in the material feed pipe; An upper shutter that opens and closes the upper communication passage of the upper drum, and a lower shutter that opens and closes the lower communication passage of the lower drum,
When the upper intake valve, the lower intake valve, the material feed valve, the upper shutter, and the lower shutter are caused to perform predetermined operations to transfer the sprayed material from the lower drum to the air feed nozzle, air is controlling the internal pressure of the lower drum to be higher than the feed pressure of the feed nozzle;
When the material to be sprayed is transferred from the upper drum to the lower drum, the internal pressure of the upper drum and the internal pressure of the lower drum are controlled so that the material to be sprayed by the upper drum and the lower drum is equal. A spraying machine characterized in that it is constructed such that stirring and transfer and spraying of the sprayed material by the air supply nozzle are performed simultaneously .

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