JPS5818136B2 - Cyclone air kneading device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention pneumatically transports granular materials such as monolithic refractory materials, mortar, concrete, etc. It relates to a new cyclone-type air kneading device that separates air from air while mixing and mixing using a cyclone.

In the past, pouring monolithic refractory materials into furnaces, which are mainly used for repairing steelmaking furnaces, and placing mortar and concrete in the construction of buildings, bridges, and dams, were carried out using water and powder. Contaminants with granules are adjusted and transported in a semi-solid state to the construction site for spray repair or pouring, or carried by water and air pressure near the tip of a nozzle capable of spray repair or pouring. The above-mentioned powder and granular materials were kneaded together for construction.

However, with these methods, for example, in the case of spraying repair of monolithic refractory material, there is a lot of bounce loss called rebound loss, and it is difficult to spray all of the refractory material onto the target. The type that mixes with water near the tip and sprays it has better transport efficiency than the former, but since it is a high-speed kneading jet, the fine powder in the refractory material becomes dust and is violently scattered, causing damage. This is not desirable from an economic and occupational health standpoint.

On the other hand, such spraying equipment is not used for placing mortar, concrete, etc. because it is too high speed and cannot mix well with water, and conventionally it was used for the construction of high-rise buildings and dams. In that case, it would be necessary to build a concrete tower, fill packets with concrete, etc., and then lift it up, or use a large-capacity concrete pump to push the mixed material to the top and pour it into place, all of which require a lot of effort, money, and time. was needed.

Therefore, the present inventor discovered that if powder or granules that are not mixed with water or other liquids are transported by air, they can be transported very easily and inexpensively, and that they can be mixed with water or other liquids near the construction site. We discovered that when the mixture is further introduced into a cyclone, not only is it well mixed, but the scattering of fine powder from these mixtures can be completely eliminated, and the transport and kneading of the powder and granules can be carried out all at once. The kneading device of the present invention was completed.

Therefore, the structural feature of the cyclone type air kneading device of the present invention is that a water addition section is provided with a water hose connected to the tip of the material hose for pneumatically transporting the powder and granules. Ice or other liquids can be added and then kneaded by connecting a kneading hose, tangential to the cyclone and with the flow rate reduced by a deceleration rectifier conduit provided at the end of the kneading hose. The method involves guiding the kneaded material and kneading it again while separating it from the air in a cyclone. In some cases, the kneaded material is discharged downward into a single phase pool, and the difference in particle size is large. In order to prevent the separation of large and small particles, a vibrating tank is provided at the bottom of the cyclone, and if necessary, a conical baffle plate is provided at the outlet of the cyclone.

The method of pneumatically transporting powder and granules using a material hose, adding water at the tip of the material hose, and then discharging the material while kneading it using a kneading hose has not been used until now in the spraying repair of monolithic refractory materials and the spraying construction of mortar. There is.

However, in this case, the speed of discharging from the mixed line hose is too fast, there are many splashes, and dust is generated too much.

However, powder and granules are transported by pneumatic transport in material hoses that can be transported at high speeds and in large quantities, mixed with water or other liquids near areas that require repair or construction, and then transported at high speed while being mixed by a mixed hose. Large-scale transportation of powder and granules by further air kneading the mixture of powder and water or liquid while decelerating with a cyclone, separating the mixture from the air, and gently taking out the kneaded material from the outlet at the bottom of the cyclone. No device has yet been found that successfully combines deceleration with a cyclone, air kneading, and separation.

This will be explained in detail below with reference to the drawings.

The drawings show an embodiment of the present invention, and FIG. 1 is a side view of a cyclone type air kneading device.

FIG. 2 is an enlarged sectional view taken along the line AA in FIG. 1.

As is clear from these figures, the crosstalk device of the present invention transfers the powder and granules pneumatically transported through the material hose 1 by pressurized air from a combinator, etc. to the water addition section 2.
At , water or other liquid guided by water hose 3 is added as appropriate by appropriate adjustment of valve 4 , and the kneaded material is kneaded with water while passing through kneading hose 5 , and after passing through deceleration rectifier pipe 6 , it is transferred to cyclone 7 . The air and the contaminants are separated from each other while further mixing the airflow, and while the contaminants that gradually fall into the vibrating tank 8 are pooled in the vibrating tank 8, the discharge port 14 at the bottom of the vibrating tank is
The kneaded material is then supplied to the repair area, etc.

Here, the material hose 1 is similar to that conventionally used for spraying construction, and has a material hose of 100 to 1! 50 m1
Powder is transported with air at a high velocity of about sec.

Because it uses pneumatic transportation of powder and granules, it has the advantage of being able to be transported easily even over very long transportation distances.

The tip of the material hose 1 is also connected to the water addition section 2 as in the past, and the water addition section 2 is a water ring that injects water at a constant rate onto the material such as the monolithic refractory material being transported. It has a structure similar to that used for normal dry spraying construction, consisting of a jacket-type nozzle body with a built-in nozzle body.

The kneading hose 5 has the function of air kneading and transporting water and powder and granules, and its length is appropriately changed from 1 m to 4 m depending on the type and specific gravity of the powder and granules.

The cross section of the deceleration rectification conduit 6 is almost perfectly circular on the inlet side on the side of the kneading hose 5, and its internal volume is gradually increased, while on the cyclone T side it is preferably a rectangular or perfectly circular hollow tube to prevent the progress of the contaminants. Reduce the traveling speed to 1/10 while regulating movement other than direction.
It has the function of decelerating to a certain extent, and is attached to the cyclone so that the kneaded material enters in the tangential direction of the cyclone 7, as shown in FIG.

Here, the most characteristic feature of the present invention is that the cyclone 7 supported by tripod or quadruped legs 13 has the same shape as a normal one, but the function it performs is completely unprecedented. It's something that didn't exist.

In other words, in the past, cyclones only had the function of separating and classifying, but in the present invention, the mixed substances introduced into the cyclone at high speed are further kneaded with air flow while circulating in the cyclone, and are mixed well with water. Ru.

The air is then discharged upward from the exhaust pipe 9, and the crosstalk is quietly discharged downward from the outlet 10 at the bottom of the cyclone.

In other words, in the conventional method in which the cyclone 7 is not provided here, the mixture of powder and water is discharged to the outside from the mixed line hose or the nozzle attached to it at a very high speed, and the dust and materials generated at this time are The fine powder inside becomes dust and scatters, which is unsanitary and wasteful, and the rebound loss that occurs when spraying on a construction or repaired surface is extremely uneconomical.

However, if the cyclone 7 is provided here, most of the kinetic energy when the mixture of powder and water enters the cyclone is used for circular movement within the cyclone, and the kneaded material is Ejected quietly.

During this time, the insufficient mixing with water is achieved by the air flow.

What is even more effective is that even if the diameter of the cyclone is made as small as 18GIfL, it still exhibits a kneading capacity of about 3 to 5 tons/hr, and no dust is generated at all, so sanitary cyclone T and its The vibration tanks 8 provided at the bottom are connected by a flexible hose 11,
The vibrating tank 8 is vibrated by a vibrating motor 12 fixed to it as necessary, such as when the viscosity is too high, and the contaminants inside the tank can be gently flowed out from the discharge port 14 to the area to be repaired or constructed. I can do it.

In this case, the discharge port j4 of the vibration tank 8. There is a marked difference in the particle size of the kneaded material discharged from the outlet. In such a case, if a conical baffle plate 15 is provided at the center of the discharge port 14, as the fractured surface is shown in FIG. 1, a homogeneous kneaded material regardless of the difference in particle diameter can be obtained.

, : As detailed above, the cyclone type air kneading device of the present invention is different from the conventional method in which a cyclone is used in addition to the device that mixes pneumatically transported powder and granules with water near the place where they are repaired or applied. It's something that didn't exist.

Therefore, this crosstalk device can be used in most cases where water or other liquids are mixed with powder or granules.
When used in concrete or mortar construction, there is no generation of dust or rebound loss, and if long material hoses and water hoses are used, repairs and construction can be performed in high (remote) locations.

Furthermore, in the food field, the scope of use is increasing, such as when used in the food manufacturing process of confectionery and bread, in which flour and sugar are pneumatically transported and mixed with water. It is also spacious.

[Brief explanation of drawings]

Figure 1 is a partially cutaway side view, and Figure 2 is a side view of Figure 1.
It is an enlarged sectional view of part A. 1...Material hose, 2...Water addition section, 3...Water hose, 5...
・Kneading hose, 6... Deceleration rectification conduit, T...
...Cyclone, 8...Vibration tank, 15.
...Conical baffle plate.

Claims (1)

[Claims] 1 A water hose 3 is connected to the tip of a material hose 1 that pneumatically transports powder and granules to form a water addition section 2, and from the water addition section 2, water is further tangentially connected to the upper part of the cyclone 7 via a kneading hose 5. A cyclone type air flow mixer comprising a vibration tank 8 connected to the provided deceleration rectification conduit 6, a vibration tank 8 provided at the cyclone lower outlet 10, and a discharge port 14 for a kneaded slurry of powder and water provided below the vibration tank 8. .