JPS5929026A - Method and device for kneading powder of cement or the like and other kneading material - Google Patents

Abstract

PURPOSE:To bring cement, and water into reaction with each other sufficiently long and to develop affinity to a kneading material in a short time by kneading powder of cement, etc. and water to prepare powder milk, incorporating the powder milk into other kneading material and kneading the same. CONSTITUTION:Powder of cement, etc. is supplied at a specified rate from a feeder 32 into a water film hopper 60. On the other hand, water is supplied at a specified rate from a supply device 90 through a flowmeter 93 to the hopper 60. The powder and the water are kneaded in an auger mixer 70, and the mixture is supplied through a high speed mixer 80 to a continuous kneading and conveying device 44. Stone, sand, and other aggregate are supplied by the belt feeder 52 in a constant volume supply device 31 for kneading materials to the device 44. On the other hand, a prescribed amt. of water is supplied through a water supply device 35 and a water volume selector 21 into the device 44. The powder milk of cement, etc. and the sand, aggregate, etc. are fed to the upper part by screw flights 39a according to the revolution of a revolving shaft 39, and are kneaded with blades 39b. The kneaded material is discharged from the end part thereof.

Description

DETAILED DESCRIPTION OF THE INVENTION This invention is applicable to cement, etc., used in mixed production of mortar or ready-mixed concrete used in various construction works or product manufacturing, or in combination with gypsum-based or other powders, sand, aggregate, stone, etc. The present invention relates to a method for kneading a mixed wire material and an apparatus therefor.

Traditionally, mortar and ready-mixed concrete are manufactured in a mixed manner. water, cement, and other interfering materials (e.g., sand, gravel,
Currently, ingredients (admixtures, artificial bone tissue, etc.) are put into a mixer and kneaded almost simultaneously.

However, with this cross-wire method, it takes time for the cement and the cross-wire material to be homogeneously and sufficiently cross-wired, and the cement and the cross-wire material are mixed together. I
P, it was difficult to get used to it.

On the other hand, in order to improve the workability and quality control of mortar and concrete, it is desirable to allow a sufficiently long reaction time between the cement material and water.

Therefore, in this first invention, a powder such as cement and water are mixed in advance to produce powder milk such as cement, and then this powder milk such as cement is mixed with other mixed wire materials. By using a method of mixing powder such as cement and other mixing materials by kneading these materials, it is possible to obtain a sufficiently long time for the reaction between the powder such as cement and water, and to stabilize the milk properties. It is characterized by being able to blend the powder such as cement and the cross-wire material in a short time.

Further, the second invention provides a continuous cross-wire conveying device for a set of screws, a cross-wire material supplying device for supplying a cross-wire material such as sand or aggregate to the continuous cross-wire conveyance device, and a cross-wire material supply device that supplies powder such as cement and water. A mixing device for mixing powder such as cement and other mixing materials, including a high-speed mixer that kneads powdered milk such as cement and supplies the powdered milk such as cement to the continuous mixing conveyance device. The special punishment is that powdered milk such as cement can be manufactured continuously at high speed and supplied to a continuous cross-conveying device.

Next, one embodiment of the present invention will be described based on the drawings.

In FIG. 1, a cement level control device 3G attached to a powder bin 29 for cement, etc. detects when the powder, such as cement, supplied to the powder bin 29 for cement, etc. reaches a predetermined height. Although it is designed to stop the operation of a cement supply device (not shown) that supplies cement to the cement powder bin 29, it may be used as a simple level detection means. Further, cement can be directly poured into the cement powder bin 29 from a bag, container, or the like.

The automatic metering and continuous supply device 37 for powder such as cement collects powder such as cement into a rotary vane feeder 32 (see Fig. 2) using a transfer screw 30 at the bottom of the tank, and calculates the discharge amount by rotation of this feeder. decide. motor 50
The rotation speed of a rotating device such as a reducer that is linked to the cement can be selected in stages by changing the gear ratio (speed change operation). Alternatively, the discharge amount of cement powder is set and controlled in advance.

As shown in FIGS. 4 and 5, the rotary vane feeder 32 has blades 32b provided at equal intervals around a rotor 32a, and has cement, etc. Weigh the powder in fixed amounts. The rotary vane feeder 32 has an upper cement input port 32d.
It has an opening 32e for dropping powder such as cement on the lower side. The water film hopper 60 has a substantially inverted truncated cone shape and is mounted below the feeder 32 with an opening 60a facing the drop-in port 32e of the feeder 32. An annular groove 60b is formed around the opening 60a so as to form a water belly on the inner peripheral surface of the water film hopper 60. An auger mixer 70 is connected to the lower end opening 60c of the water film hopper 60, as shown in FIGS. It is being done. A high speed mixer 80 is connected to the tip of the auger mixer 70 via a connecting pipe 72. This high speed mixer 80 is shown in detail in FIG. That is, the crosstalk body 82 is located adjacent to the pump 81.
A rotating shaft 83 is provided and passes through the center of the crosstalk body 82.
One end is connected to the impeller 84 of the pump 81 and the other end is connected to the motor 85, or a plurality of rotating shafts 83
A rotary plate 87 on which a plurality of stirring paddles 86 are installed.
A plurality of them are provided spaced apart from each other. Partition plates 88 have center holes 88a and are fixed to the mixing trunk 82 so as to be located on both sides of the rotating plate 87. Paddles 89 are implanted in the partition plate 88 so as to pass between the paddles at a position where they do not interfere with the paddles 86 that move due to the rotation of the rotating plate 87. Further, 90 is a water supply device, in which a pump 92 is provided in a water tank 91, and is piped from the pump 92 to the groove 60b of the water film hopper 60 via a flow meter 93 for measuring the amount of water supplied and a flow rate adjustment valve 94. ing. In addition,
100 is a base counter that displays the amount of cement powder supplied and the amount of water supplied.

Such a water film hopper 60, auger mixer 70,
High speed mixer 80 operates as follows.

When powder such as cement is input from the input port 32c of the feeder 32, the rotor 32a rotates and the water film hopper 6
A fixed amount is supplied to 0. On the other hand, from the water supply device 90, a pump 92 supplies a fixed amount of water measured by a flow meter 93 and adjusted by a pulp 94 to the water film popper 60. The supplied water is once injected into the annular groove 60b and overflows to form a water film on the inner wall surface of the water film hopper 60. By forming a water film in this way, cement or cement-based powder is prevented from adhering to the wall surface. The cement or cement-based powder and water supplied to the water film hopper 60 are hydrated and kneaded by an auger 71 which is a combination of a spiral and a paddle in an auger mixer 7o. This kneading eliminates large lumps of powder such as cement, and then mixes at high speed! J--
Send to 8Q. In a high-speed mixer, the impeller 8 of the pump 81
4 passes through the cross-conductor 82 through the hole 88a of the partition plate 88, over the outer periphery of the rotary plate 87, and then to the next partition plate 88 in a meandering flow. This passage-
During this process, the mixed liquid passes through the openings at Badle 86° and Badle 89, so powder such as cement does not become fine particles, but powder such as cement, which is a colloidal suspension, It becomes body milk.

Water supply system +! ? , 35 is equipped with a level switch 10 and a water pump 9 for automatically replenishing water. In the figure,
8 is a water tank.

The water amount selection device 12 is for controlling the water supplied to the continuous mixed line conveyance bag @44, the water flow rate needle 15, and the adjusting pulp 14.
A predetermined amount of water is supplied to the continuous kneading and conveying device 44 via the automatic opening/closing pulp 13 and the three-way pulp 16.

The water flow rate adjusting pulp 14 and the automatic opening/closing pulp 13 have three lines for setting three types of formulations, and the amount of water supplied is determined by the selection of the automatic opening/closing pulp 13. Note that the level switch 10. The water pump 9, water quantity selection device 12, etc. do not necessarily need to be provided, but may be provided as necessary. Moreover, the flow rate adjustment of the water flowing out from the water flow rate needle 15 can be performed using a single flow rate adjusting pulp.

A kneading material quantitative supply device 31 such as stone, sand, and sacral material is a mixing material supply device for concrete or cement-based composite material wire, and a belt feeder 520 adjusts the belt speed and cut gate 41 to produce a kneaded material such as stone, sand, sacral material, etc. Sand bottle 31 shown in
The supply amount of sand and aggregate to be discharged from the aggregate bin 31b and the aggregate bin 31b is determined.

The screw continuous kneading and conveying device 44 includes a gutter 40, a screw @ 39a protruding from the rotating shaft 39, and a blade 39b for crosstalk. The rotating shaft 39 is rotationally driven by a motor 38.

This continuous kneading and conveying device 44 is supplied with cement milk or other powdered milk from a high-speed mixer 80, and is also supplied with sand, stones, aggregates, etc. as mixing materials from the kneading material quantitative supply device 31. Supplied.

The powdered milk, sand, aggregate, etc. of this cement etc. are transferred to the rotating shaft 3.
9 is conveyed upward by the screw teeth 39a, kneaded by the blade 39b, and discharged from the end thereof.

The control panel 11 has built-in devices such as an operating device for each device, a control device for recipe setting, and a retraction indicator light.

As explained above, in this first invention, a powder such as cement is kneaded with water in advance to produce powder milk such as cement, and then this powder milk such as cement is mixed with other mixed wire materials. This method of kneading cement powder and other mixed materials allows sufficient time for the reaction between the cement powder and water, and also allows the cement powder to react with water. The feature of a continuous mixer is that it can knead small cross sections of materials lined up in a mixing pattern in a short time, and the hydration and stability of water and powder such as cement. It is possible to achieve both the characteristics of being able to take sufficient time for the process, and it is possible to improve the crosstalk properties and make it possible to prepare 5 that corresponds to a sufficient number of uses.

Further, the second invention provides a continuous cross-wire conveying device for a set of screws, a cross-wire material supplying device for supplying a cross-wire material such as sand or aggregate to the continuous cross-wire conveyance device, and a cross-wire material supply device that supplies powder such as cement and water. The mixing device for mixing powder such as cement and other mixing materials is equipped with a high-speed mixer that kneads powder such as cement and milk and supplies the powdered milk such as cement to the continuous mixing device. Powdered milk such as cement is continuously manufactured at high speed and supplied to a continuous cross-conveying device, and the powder such as cement can be sufficiently cross-wired with other cross-conducting materials in a short time.

[Brief explanation of the drawing]

FIG. 1 is a piping system diagram of a crosstalk device showing an embodiment of the present invention, FIG. 2 is a side view of the crosstalk device shown in FIG. 1, and FIG. 3 is a plan view of the crosstalk device shown in FIG. 2. , FIG. 4 is a partial sectional view of the 7-men 2-luke manufacturing section shown in FIG. 1, and FIG. 5 is a front sectional view of the high-speed mixer shown in FIG. 4. 31... Kneading material fixed quantity supply device, 37... Powder automatic metering continuous supply device such as cement, 44... Continuous kneading conveyance device, 80... High speed mixer.

Claims (1)

[Scope of Claims] (Re) Mix powder such as cement with water to produce powder milk such as cement, and then mix this powder milk such as cement with other mixed materials to produce these powders. (2) A method for mixing powder such as cement and other mixed wire materials. (2) A screener, a set of continuous mixed wire conveying devices, and a mixed wire material such as sand or aggregate into the continuous mixed wire conveying device. Mixing of powder such as cement and other mixed materials, which is equipped with a mixing material feeding device and a high-speed mixer that mixes powder such as cement and water to make milk and supplies it to the continuous mixing material conveying device. Device.