JPH0832416B2 - High speed stirring device - Google Patents

Description

TECHNICAL FIELD The present invention relates to a high-speed stirrer in an apparatus for producing a solidified molded product such as various building materials such as wall materials and roofing materials.

[Prior Art and Problems to be Solved by the Invention] The present inventor previously invented an alumina-based hydraulic solidifying material. This alumina-based hydraulic solidifying material contains silicon, alumina, sodium, calcium, titanium, iron, and the like as main components.

The characteristics of the method for producing this solidified material and the solidified molded article are:
Unlike existing products, it is not necessary to perform molding and firing, but to knead water, aggregate, and coagulant, and then mold and solidify at room temperature.

However, this manufacturing method has the following problems. Flow resistance is generated by kneading, and the heat partially evaporates the water to form an incomplete solidification part inside the solidified molded product, and bubbles remain to adversely affect the hardness and strength of the solidified molded product. In addition, the resistance during stirring increases.

Further, if air is present at the time of casting, air is entrained between the mixture and the molding die, and air craters are formed on the surface of the solidified molded product, resulting in a defective product. Furthermore, as in the above case, as a result of air bubbles forming air holes inside the solidified molded product, the interior of the solidified molded product is oxidized and water absorption is increased,
It adversely affects the hardness and strength of the solidified molded product.

[Object of the Invention] The present invention provides a high-speed stirring device capable of solving the above-mentioned problems and producing a completely solidified molded article.

[Means for Solving the Problems] The high-speed stirring device of the present invention comprises a compound comprising a hydraulic coagulant and an aggregate such as various inorganic substances or hydrated unreacted organic substances,
A high-speed stirrer for uniformly mixing and stirring water with a vacuum, comprising a tank having airtightness, a compound inlet provided at an upper part of the tank, and a compound provided at a lower part of the tank. An outlet for a mixture of water and water, an inlet for water provided in the upper part of the tank, a vacuum valve provided in the tank, and a rotary shaft vertically provided in the center inside the tank. A push-down spatula provided on the rotary shaft,
A rotary frame that rotates along the inner peripheral wall of the tank, a push-up spatula provided on the rotary frame, a first drive unit that rotates the rotary shaft at high speed, and a second drive that rotates the rotary frame at high speed. And a pump that is connected to the vacuum valve and evacuates the inside of the tank.

[Operation] In the high-speed stirring device of the present invention, the compound and water are charged into the tank having airtightness from the charging port and the charging port, respectively. Then, the inside of the tank is evacuated using a pump from the vacuum valve, and then the first drive means and the second drive means are rotated to rotate the rotary shaft and the rotary frame at high speed. When the rotary shaft and the rotary frame rotate, the push-down and push-up spars rotate, and the compound and water stay in the tank from the center toward the outside in a vacuum state, and at the center, move downward, and at the periphery, move upward. It flows and is stirred. After stirring for a predetermined time, the first drive means and the second drive means are stopped and the mixture is discharged from the discharge port.

[Example] An example in which the high-speed stirring apparatus of the present invention is used in an apparatus (1) for producing a solidified molded article will be described below with reference to the drawings.

As shown in FIGS. 1 and 2, an apparatus (1) for producing a solidified molded product formed from an alumina-based hydraulic solidifying material, water, and an aggregate includes an aggregate silo (2) (3). , Substrate silo (4), quantitative hopper (5), uniform particle mixing stirrer (6), compound intermediate hopper (7), quantitative transfer vertical lift (8), high speed stirrer (10), low speed stirrer ( 20), a placing device (30), a pallet (40) and a conveyor (9).

The alumina-based hydraulic solidifying material contains silicon, alumina, sodium, calcium, titanium, iron and the like as main components.

The steps for producing a solidified molded article using the above apparatus (1) are as follows.

Aggregates such as various inorganic substances extracted from aggregate silos (2) and (3) or hydrated unreacted organic substances (for example, organic carbide,
The plastic, styrofoam, wood chips, etc.) and the hydraulic coagulant base material taken out from the base material silo (4) are
The fixed amount hopper (5), the uniform particle mixing and agitating device (6) and the compound intermediate hopper (7) are used to reduce the total amount of hydraulic coagulant.
30%, aggregate is about 70% of the whole and mixed uniformly. Then, the mixed powdery mixture is carried to the high-speed stirring device (10) by the vertical lift for quantitative transfer (8).

Inside the high-speed stirring device (10), about 30% of the total amount of water was added to the mixture, and then the mixture and water were uniformly stirred in a vacuum state to produce a liquid mixture.

This admixture is sent to a low speed stirring device (20), and while kneading, the quantitative amount of the admixture is measured and sent to a setting device (30).

The placing device (30) places a certain amount of the mixture on the pallet (40) flowing on the conveyor (9).

The pallets (40) on which the mixture is placed are stacked horizontally. This allows the mixture to be mixed without the use of a curing shelf.
A solidified molded product is produced by curing at room temperature from 30 ° C to 30 ° C for about 6 hours to solidify.

 The details of each device will be described below.

The high speed stirring device (10) will be described with reference to FIGS. 3 and 4.

(102) is a cylindrical tank. This tank (10
2) has a structure that can maintain airtightness.

(104) is an injection port of the compound provided on the upper surface of the tank (102).

(106) is a receiving hopper provided at the upper part of the charging port (104), and is provided with a charging blade (108) for surely charging the mixture into the tank (102). The receiving hopper (106) is rotated by rotating the (108).
The compound therein is put into the tank (102).

(110) is a closed lid that opens and closes the charging port (104).
When the sealing lid (110) is closed, the inside of the tank (102) becomes airtight.

(112) is a water inlet provided in the upper part of the tank (102).

(114) is a discharge port provided at the bottom of the tank (102). The discharge port (114) is provided with an opening / closing lid (116).

Reference numeral (118) is a vacuum valve provided on the upper surface of the tank (102), and the air inside the tank (102) is evacuated from the vacuum valve (118) by a pump to bring it into a vacuum state.

Reference numeral (120) is a guide member for sliding down the mixture charged from the charging port (104) to the central portion inside the tank.
The guide member (120) is fixed to the inner peripheral surface of the tank (102).

(122) is a rotating shaft provided in the center of the inside of the tank in the vertical direction. The upper end of the rotary shaft (122) is supported by the guide member (120), and the lower end is rotatably supported by the bottom of the tank (102).

Reference numeral (124) is a push-down spatula provided on the upper and lower portions of the rotary shaft (122).

Reference numeral (126) is a plurality of stirring rods provided on the rotary shaft (122) so as to project in the radial direction.

Reference numeral (128) is a U-shaped rotary frame, and two rotary frames are combined in a plane cross shape along the inner surface of the tank (102). The rotary frame (128) is rotatably provided on the rotary shaft (122) via bearings.

(130) is a push-up spatula provided on the outside of the rotary frame (128). This lifting spatula (130) is a tank (10
A plurality of sheets are provided along the inner peripheral surface of 2).

Reference numeral (132) is an annular gear provided on the upper part of the rotary frame (128) and is provided on the inner surface of the tank (102) with a support member (150).
It is rotatably provided by. This annular gear (132) has two rotary frames (128) fixed in a flat cross shape.

A bevel gear (134) is connected to the rotating shaft (122) by a belt (136) and a belt wheel (138).

(140) is a motor for rotating the rotary frame (128) and the rotary shaft (122) at high speed.

(142) is an inverter for controlling the rotation direction and rotation speed of the motor (140).

(144) is the rotating shaft of the motor (140) and the belt (146)
And a bevel gear connected by a belt wheel (148).
The bevel gear (144) is engaged with the annular gear (132) and the bevel gear (134). The rotating frame (128), which rotates the bevel gear (144) by the motor (140), and the rotating shaft (122) respectively rotate in opposite directions.

The operating state of the high-speed stirring device (10) having the above structure will be described below.

High-speed stirrer (1
A fixed amount of the compound sent from the (0) to the receiving hopper (106) is supplied by the rotating input blade (108) to the input port (104).
Is put into the tank (102) from the inside. Then the inlet (1
A certain amount of water is injected from 12).

When a fixed amount of the compound and water are stored, the vacuum valve (118) is evacuated to bring the inside of the tank (102) into a vacuum state.

When the push-up spatula (130) and the push-down spatula (124) are rotated in opposite directions by the motor (140), the mixture and water are pushed down by the stir bar (126) inside the tank (102) while being stirred. ), It is pushed down by the push-up spatula (130) around the inside of the tank (102). Therefore, the compound and water are circulated while being stirred in the tank (102) under vacuum, and are uniformly kneaded and kneaded without air mixing to form a liquid mixture. In order to control the state and time of this stirring and kneading, the rotation speed and direction of the motor (140) may be controlled by the inverter (142).

When the stirring and kneading is completed, the motor (140) is stopped and the discharge port (114) is opened to send the mixture to the low speed stirring device (20).

The low speed stirring device (20) will be described with reference to FIGS. 5 and 6.

(202) is a substantially cylindrical tank. This tank (2
02) is airtight.

Reference numeral (204) is an admixture inlet (204) provided in the upper portion of the tank (202) and is connected to an outlet (114) of the high speed stirring device (10). A rotary valve (206) is provided inside the charging port (204) so that a fixed amount of the mixture can be charged.

 (208) is a water inlet.

(210) is a vacuum valve provided in the upper part of the tank (202).

(212) is a rotary shaft provided in the horizontal direction inside the tank (202). The rotating shaft (212) is rotated by a motor controlled by an inverter.

Reference numeral (214) is a support rod that projects four at every 90 ° in the radial direction of the rotating shaft (212). Four sets of these four support rods (214) are provided at equal intervals.

(216) is a stirring blade having a V-shaped cross section. Four stirring blades (216) are provided, each supported between four supporting rods (214) protruding at 90 ° intervals in the radial direction of the rotating shaft (212).

Reference numeral (218) is a stirring rod horizontally provided between the four pairs of support rods (214).

(220) is a discharge port provided at the bottom of the tank (202), and is provided with an opening / closing lid (222). The discharge port (220) is elongated in the horizontal direction as shown in FIG.

The operating state of the low speed stirring device (20) having the above structure will be described below.

From high speed agitator (10) to rotary valve (206)
A certain amount of admixture is passed through the inlet (204) to the tank (20
2) It is thrown inside. Subsequently, a fixed amount of water is injected from the injection port (208).

When a fixed amount of admixture and water are stored, air is evacuated from the vacuum valve (210), and the inside of the tank (202) becomes a vacuum state.

The stirring blade (21
Rotate 6) at low speed to stir the admixture. The rotation direction and the rotation speed are controlled by an inverter.

When the stirring is completed, the mixture is sent from the discharge port (220) to the setting device (30).

The placing device (30) will be described with reference to FIGS. 7 and 8.

Reference numeral (302) is a main body of the setting device (30), and an admixture inlet (304) is provided in an upper portion thereof, and a pouring opening (30
6) is provided. Input port (304) and setting port (30
6) has an elongated rectangle corresponding to the width of the pallet (40).

(308) is a delivery roller provided in the width direction inside the main body. The roller (308) has a plurality of push-out blades (312) projecting around the drum (310). This roller (308) is rotated by a motor controlled by an inverter.

(314) is a pouring port (306) inside the main body (302)
It is a stirring rod provided in the vicinity of the width direction. Stir bar (31
4) is connected to the roller (308) by a belt and rotates together with the roller (308).

Reference numeral (316) is a supply port for pouring the mixture sent from the main body (302) into the pallet (40).
It extends diagonally downward from the front of 2). This supply port (31
The upper part of 6) is rotatably provided in the setting port (306) in the front part of the main body (302), so that the lower part of the supply port (316) is well positioned above the pallet (40). Is adjustable. The size of the supply port (316) in the width direction is set to be substantially the same as the width of the pallet (40). Further, a vibrator (318) is provided on the lower surface of the supply port (316) so that the mixture easily drops.

The operating state of the placing device (30) having the above structure will be described below.

From the low speed stirring device (20) to the main body (30) of the setting device (30)
The liquid mixture put in 2) is sent to the setting port (306) by a sending roller (308) rotated by a motor controlled by an inverter. The mixture is sent to the supply port (316) while maintaining a uniform state by being stirred by the stirring rod (314) in the vicinity of the pouring port (306), and the pallet (according to the width of the pallet (40) ( 40) is filled.

Pallet (40) that doubles as a curing shelf
It will be described with reference to FIG.

The (402) is a pallet body (402) having a flat rectangular shape, and has a mixture storage section (404) slightly recessed from the outer peripheral wall. Linear heaters (406) are embedded in parallel below the mounting surface of the accommodating portion (404) at required intervals. This heater (406) is for keeping the water temperature of the water contained in the storage unit constant. Further, a plurality of notches (408) for inserting the claws of the forklift are provided on the peripheral wall of the pallet body (402).

(410) is a mold body made of thin synthetic resin. The mold body (40) is a part of the surface of the solidified molded product, is a copy of the surface texture of the existing product, and has irregularities along the surface of the existing product. This form (41
0) is placed on the water after the storage part (404) of the pallet (40) is filled with water. This ensures that the mold (410) is always placed horizontally.

(412) are stacking protrusions provided at the four corners of the pallet body (402). A concave portion (414) that engages with the convex portion (412) is provided below the convex portion (412). As a result, when the pallets (40) are stacked,
The convex portion (412) of the lower pallet body (402) and the concave portion (414) of the upper pallet (402) engage with each other to form the pallet (4
It is possible to stack 0) horizontally and stably.
Therefore, the conventional curing shelf for pallets is not required, and the coagulant of the present invention is cured at room temperature, so that a room for temperature adjustment is not required. Therefore, the pallets (40) are stacked as described above to form a curing shelf, and it is not necessary to make a curing shelf, which has been the most expensive in the past, and the cost can be reduced.

 Next, the usage state of the pallet (40) will be described below.

The pallet (40) is filled with water in the storage section (404) and the mold (410) is placed on the pallet (40), and then the liquid mixture is filled from the placing device (30). As a result, even if the pallet (40) vibrates to some extent during the transfer of the conveyor (9), the resistance of water and the mass of the admixture cause no recoil, and the horizontal state of the liquid admixture can be maintained. effective. In particular, the mold (410) has irregularities along the surface of the existing product,
Since the mold body (410) can always maintain a horizontal state, the surface texture of existing products can be perfectly reproduced.

As shown in FIG. 11, the pallet body (402) has a recess (41
4) and the convex part (412) are engaged. Then, the pallets (40) are stacked horizontally and the liquid mixture is cured at room temperature of 20 ° C. to 30 ° C. for 5 to 10 hours to produce a solidified molded product. Even if the outside temperature changes, the heater (40
Since the water temperature of the water put in the storage section (404) is kept constant by 6), the same solidified molded article can be always manufactured.

[Advantages of the Invention] In the high-speed stirring device of the present invention, the mixture is retained outward from the central portion by the push-down spatula and the push-up spatula, and is stirred downward in the central part and upward in the end edge part. Therefore, it is possible to uniformly stir the mixture while removing the air in the mixture in a short time.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a front view for explaining a manufacturing apparatus, FIG. 2 is a side view for explaining the manufacturing apparatus, and FIG. 3 is a vertical sectional view of a high-speed stirring apparatus. 4 is a cross-sectional view of the high-speed stirring device, FIG. 5 is a vertical cross-sectional view of the low-speed stirring device, FIG. 6 is a cross-sectional view taken along the line I-I in FIG. 5, and FIG. FIG. 8 is a partially cutaway perspective view showing the usage state of the driving apparatus, FIG. 9 is an exploded perspective view of the pallet, FIG. 10 is a vertical sectional view of the pallet, and FIG. FIG. 4 is a front view of a state in which pallets are stacked. Explanation of symbols 1 …… Manufacturing equipment 10 …… High speed stirring equipment 20 …… Slow speed stirring equipment 30 …… Placing equipment 40 …… Pallet 102 …… Tank 104 …… Inlet 106 …… Receiving hopper 110 …… Sealing lid 112 …… Injection port 114 …… Exhaust port 118 …… Vacuum valve 120 …… Guide member 122 …… Rotary shaft 124 …… Push down spatula 128 …… U-shaped rotary frame 130 …… Push up spatula

Claims (1)

[Claims] 1. A high-speed agitator for uniformly agitating a mixture of a hydraulic coagulant and various inorganic substances or aggregates such as hydrated unreacted organic substances with water and agitating the mixture. A tank having, a mixture inlet provided at an upper portion of the tank, a mixture-water mixture outlet provided at a lower portion of the tank, and water provided at an upper portion of the tank. An inlet, a vacuum valve provided in the tank, a rotary shaft vertically provided in the center of the tank, a push-down vera provided on the rotary shaft, and an inner peripheral wall of the tank. A rotating frame that rotates, a push-up spatula provided on the rotating frame, a first driving unit that rotates the rotating shaft at high speed, a second driving unit that rotates the rotating frame at high speed, and a connection to the vacuum valve. And a pump that vacuums the inside of the tank High-speed stirrer, characterized in that Li Cheng.