KR20020079315A - Resin concrete tube centrifugally molding materials supplying apparatus - Google Patents

Abstract

PURPOSE: To smoothly transport an aggregate 7 without clogging a resin concrete-manufacturing aggregate-feeding screw conveyor 1 with the aggregate. CONSTITUTION: In a resin concrete tube manufacturing apparatus 13 wherein a rotary framework 12 is provided on a floor surface 11 and the aggregate 7 and resin solution are fed into the gramework 12, a mixer 2 for the aggregate, resin solution and curing agent is freely detachably attached to a tip of the aggregate feeding screw conveyor 1. Rotation of the mixer 2 and rotation of the screw conveyor 1 are independently carried out and both rotary shaft 1' and 2' are provided on a common rotary axis (c). A mixed liquid injection opening 3' of a mixer 3 for the resin liquid and curing agent is opened to the conveyor 1 side of an attaching and detaching part 4" of outer cylinders 4 and 4' of the mixer 2 and the screw conveyor 1. Washing agent can be fed to the mixer 3. A plurality of notchs 6 for enlarging a clearance (t) to an inner surface of the outer cylinder 4 are formed on an outer periphery of a spiral vane 5 of the screw conveyor 1.

Description

RESIN CONCRETE TUBE CENTRIFUGALLY MOLDING MATERIALS SUPPLYING APPARATUS}

The present invention relates to a material feeder for mixing and injecting aggregate, resin solution and hardener in a rotating mold and producing a resin concrete tube.

Conventionally, the material feeder in the resin concrete pipe manufacturing apparatus was developed, and the absolute dry aggregate was conveyed to the mixer of the screw conveyor tip by the screw conveyor provided in the lower end of an absolute dry aggregate hopper (Japanese Patent No. 3027422). ).

Since the absolute dry aggregate includes the granular aggregate shown in Fig. 6 in addition to the mortar sand and the fine sand, it is interposed between the outer periphery of the spiral wing and the inner surface of the outer side of the screw conveyor during conveyance by the screw conveyor. Spiral blades stopped rotating, excessive load was applied to the driving prime mover, and accidents of conveyance stopped unexpectedly, and only the mixer was rotated to cause a serious accident in which only the resin liquid and the hardener were supplied into the mixer.

Moreover, the width | variety of the stirring blades which were planted in the mixer was equal, the space | interval was equal, and it was difficult to perform the mixing evenly by making the separation or glass phenomenon of the particle | grains of the said particle size structure large and the particle | grains easy to generate easily.

The present invention provides an unexpected accident in which only the resin liquid and hardener are supplied to the mixer by an accident of stopping the conveyor without causing aggregate particles to get caught in the gap between the spiral blade and the outer passage in the screw conveyor in the material feeder. It is aimed at preventing the damage caused by the damage, and improving the poor mixing of the resin liquid, the hardener, and the aggregate by the particle size separation based on the particle size configuration of the aggregate in the mixer.

Figure 1 is a longitudinal side view showing a material feeder for producing a resin concrete pipe of the present invention.

Figure 2 (a) is a longitudinal front view of the screw conveyor, Figure 2 (b) is a longitudinal front view of another embodiment, Figure 2 (c) is a longitudinal front view of a conventional screw conveyor.

3 (a) is an exploded view showing the arrangement of the stirring blades of the mixer, Figure 3 (b) is a front view of one stirring blade viewed from the AA line of Figure 3 (a), Figure 3 (c) is a (A) Front view of one stirring blade seen from the line BB of FIG. 3, (D) is the front view of one stirring blade seen from the CC line of FIG. 3 (A), and FIG. Front view of two stirring vanes and connecting plate seen from line DD of FIG.

4A is an enlarged vertical side view of the mixer, and FIG. 4B is an enlarged vertical front view of the mixer.

5 is an overall side view of a resin concrete pipe manufacturing apparatus.

6 is an enlarged vertical front view of a resin concrete tube.

<Explanation of symbols for main parts of drawing>

1: screw conveyor for aggregate supply

2: Aggregate, Resin Liquid, Hardener Mixer

1 ', 2': axis of rotation

1 ": tube shaft

c: common axis of rotation

3: Resin Liquid Curing Agent Mixer

3 ': mixed liquid inlet

4, 4 ': outer cylinder

4 ": detachable part

5: spiral wings

t: gap

6: notch

7: aggregate

8, 8 ', 8 ": stirring blade

8a: connecting plate

8b: inclined stirring blades in opposite direction

9: mixture outlet

10, 10 ': drive prime mover

In order to achieve the above object, the first aspect of the present invention is a resin concrete pipe manufacturing apparatus which provides a rotary mold on the bottom surface and supplies aggregate and resin liquid in the mold, wherein the aggregate is provided at the tip of the screw conveyor for supplying aggregate. It is installed so that the mixer for resin liquid and hardening agent can be detached and detached freely, and the rotation of the mixer and the screw conveyor are performed independently, and both rotating shafts are installed on a common axis of rotation. The notch portion which opens the mixed-liquid injection opening to the conveyor side of the outer cylinder detachable part of the said mixer and the said screw conveyor, can supply a cleaning agent to the said mixer, and enlarges the clearance with the outer cylinder inner surface on the outer periphery of the spiral blade of the said screw conveyor. Consists of a material feeder for the production of resin concrete tubes The.

According to a second aspect of the present invention, in the first aspect, in the direction of transferring the mixture of the aggregate and the resin liquid and the hardening agent from the base end of the mixer to the end of the mixer on the outer circumference of the mixer, Directional and rotational axes and inclined stirring blades are planted, and the width of the wings is proximately arranged in multiple stages with a wide base end and a narrow end side, and the adjacent narrow stirring blades of various places are connected by connecting plates, It consists of a material feeder for resin concrete pipe manufacture which has a stirring blade which inclines in the direction opposite to the said inclination direction, and opens the mixture outlet of aggregate, resin liquid, and hardening | curing agent in the lower surface of the terminal end of an outer side cylinder.

According to still another aspect of the first or second aspect of the present invention, in the first or second aspect, the rotation axis of the screw conveyor is a tube axis, and the rotation axis of the mixer is inserted into the tube axis, and the drive prime mover of the rotation axis of the mixer and the screw conveyor It is comprised by the resin concrete pipe manufacturing material feeder which installed the drive prime mover of a rotating shaft independently in the base end of a screw conveyor.

Therefore, when supplying the aggregate of the absolute dry state with a different particle size to the screw conveyor, and conveying the aggregate by the conveyor, the spiral blade is only blocked (interposed) between the gap between the outer circumference of the spiral wing and the inner circumference of the outer cylinder. Because of the expansion of the gap in the notch formed on the outer periphery of the blade by the rotation of, the blocked aggregate is liberated between the spiral blades to eliminate the blockage or the jam.

In addition, in the mixer that is rotationally driven independently of the rotating shaft of the screw conveyor, the mixture is repeatedly stirred in a wide, narrow stirring blade for several stages while transferring the mixture from the proximal end to the end side with the wide and narrow stirring blades,

In addition, stirring is promoted here and there by the connecting plate installed on the narrow stirring blade, and the mixture is mixed evenly as a whole. And the conveyance of the mixture is stopped by the inclined stirring blade in the opposite direction from the mixture outlet opening to the lower surface of the terminal end, and the mixture is agitated oppositely to discharge downward from the outlet while promoting mixing.

As shown in FIG. 5, a cylindrical rotary die 12 is placed on the rotary drive wheel 14 and the flow wheel on the bottom surface 11, and the rotary die 12 is rotated around the horizontal center line by the rotation of the drive wheel 14. Rotate at high speed.

Moreover, an absolute dry aggregate hopper 16 is provided on the support trolley 15 which can be moved forward and backward along the horizontal center line, and the base end of the screw conveyor 1 outer cylinder 4 communicates with the lower end of the hopper 16. .

On the support trolley 15, a resin liquid tank 17, a curing production 18 and a cleaning production 19 are provided, and the mixer 3 is opened from the opening 3 '(mixed liquid inlet) at the upper end of the outer cylinder 4. ) Are connected by pipes 17 ', 18' and 19 ', respectively.

Aggregate 7 (FIG. 6) conveyed from screw conveyor 1 to mixer 2 installed so as to be detachably attached to the tip of outer cylinder 4, and opening part of mixer 3 (mixed liquid inlet: 3 '). The mixture liquid of the resin liquid and the hardening | curing agent discharged | emitted from this is supplied to the mixer 2, and the aggregate, resin liquid, and hardening | curing agent are mixed in the mixer 2.

A resin concrete pipe manufacturing apparatus 13 (Fig. 5) is formed by supplying the mixture into the high speed rotary die 12 from the mixture outlet 9 opened at the tip of the outer cylinder 4 'of the mixer 2. .

The screw conveyor 1 has a rotating shaft 1 'and a spiral blade 5 provided on its outer circumference in the outer cylinder 4, the rotating shaft 1' is formed by a hollow tubular shaft 1 '', The rotary shaft 2 '' of the rotary shaft (boss: 2 ') of the mixer 2 is incorporated inside the tube shaft 1' '.

At the tip of the outer cylinder of the conveyor 1 (hereinafter referred to as the conveyor outer cylinder 4), the mixer outer cylinder 4 'of the same inner diameter is freely opened by the bolts 4b through the flanges 4a and 4a. It is installed on the common rotation axis c so that attachment and detachment are possible, and the tip of the mixer outer cylinder 4 'is closed by a blind plate 4c, and the mixer (4d) at the center of the blind plate 4c is opened. Pivot end portion of rotary shaft 2 "

The rotary shaft 2 "is provided with keys 2a and 2a as shown in FIGS. 4 (a) and 4 (b), and fits into the key grooves 2b and 2b of the boss 2 '. , The outer diameter of the boss 2 'is formed to be the same as the outer diameter of the rotating shaft 1' (tube shaft 1 ") of the screw conveyor 1.

On the outer circumference of the boss 2 ', stirring blades 8, 8', 8 "which are inclined in the direction of conveying the mixture of aggregate, resin solution and hardener from the base end to the end are planted. Is inclined with the direction of rotation of the boss 2 'and the axis of rotation (collinear with the common axis of rotation c), and most stirring blades 8, 8', 8 "extending from the right end to the left end of FIG. Direction.

However, the two stirring vanes 8b shown at the left end have an action of returning the mixture to be conveyed as an inclination in the direction opposite to the inclination in the conveying direction, and form a forward and backward stirring portion of the mixture, which is directly below the mixer The mixture outlet 9 is opened in the lower surface of the terminal end of the outer cylinder 4 '.

The height (outer end) of the stirring blades 8, 8 ', 8 ", 8b is close to the inner circumferential surface of the mixer outer cylinder 4', and the width is the shortest as shown in the developed view of FIG. Three right stirring blades 8 of maximum width are planted and installed on the right side, four stirring blades 8 'of medium width are installed on the left side and narrow (narrow or narrow) on the left side. The stirring blades 8 "are planted in two rows of four, and the arrangement | positioning of medium wide and narrow stirring blades 8 ', 8" is repeated to 4 stages to the left toward the terminal end.

Planting two intermediate direction wide stir blades 8 'of intermediate width between the two opposite direction intermediate wide stir blades 8b of the terminal, and installing them in the opposite direction to the transfer direction stir blades 8', 8 '. The stirring blades 8b, 8b stir the mixture strongly on the outlet 9.

Further, the narrow stir blades 8 " and 8 " adjacent to the second row are connected to each other by connecting plates 8a in the first and third stages as shown in Figs. 3 (a) and 3 (e). The mixture is pushed in the rotational direction and the conveying direction by the rotation of the connecting plate 8a to promote stirring of the mixture.

After the discharge from the outlet 9 of the mixture is finished, the cleaning agent is supplied from the cleaning preparation 19 into the mixer 3 of the resin liquid and the curing agent to clean the resin liquid and the curing agent in the mixer 3, and the mixer 2 The resin liquid and hardening | curing agent in the inside) can be wash | cleaned, rotating the boss | hub 2 'and stirring blades 8, 8', 8 ", 8b.

Further, the mixer outer cylinder 4 'is detached from the outer cylinder 4 of the screw conveyor 1 by releasing the bolt 4b, and the boss 2' is slid off along the common rotation axis c, Also, as shown in Fig. 4 (a), the boss 2 'can be separated from the screw attachment portion 2c formed on the rotary shaft 2 "of the mixer 2, and the mixer 2 is completely screwed. The mixer 2 can be attached to the tip of the conveyor 1 by disassembling or disassembling from the tip of the conveyor 1 or the reverse operation, and the mixer 2 can be freely attached to or detached from the tip of the screw conveyor 1. It can be installed to make it work.

The gap t between the outer circumference of the spiral blade 5 provided on the outer circumference of the rotating shaft 1 'of the screw conveyor 1 and the inner circumferential surface of the outer cylinder 4 is shown in FIGS. 2 (a) and 2 (b). As described above, by forming the notches 6 to be enlarged at every equal opening angle (90 °), the aggregate 7 of the particle size inserted or inserted into the gap t can be liberated by the notches 6. Conveyance of the aggregate 7 by the rotation of the blade | wing 5 can be performed smoothly.

The rotating shaft 1 'of the screw conveyor 1 is rotationally driven by the independent prime mover 10 through the reduction sprockets 20, 20' and the circulation chain 21 wound thereon as shown in FIG. The rotary shaft 2 "in the rotary shaft 1 'is independently driven and rotated by another prime mover 10'. Thus, the screw conveyor 1 controls the direction of rotation of the rotary shaft 2" of the mixer 2 It is possible to rotate in the opposite direction or the rotational angular velocity in the same direction as the rotation axis (1 ') of each other.

In addition, 22 in FIG. 6 is a resin concrete pipe, 23 is rebar, 24 is a supply pump installed in piping 17 ', 18', 19 '.

Since the present invention is configured as described above, the aggregate can be smoothly transported to the mixer of the tip without fear of stopping the conveyor due to the aggregate stuck in the gap between the inner surface of the outer cylinder and the outer circumference of the spiral blade in the screw conveyor for aggregate transport. In addition, there is an effect of preventing the mixed discharge accident of only the resin liquid and the hardener by the independent rotation of the mixer alone.

In addition, it is possible to sufficiently mix aggregates of various particle sizes with resin liquids and hardeners by a mixer, and to produce resin concrete tubes of good quality. The hardener can be washed off.

Claims (3)

In the resin concrete tube manufacturing apparatus which installs a rotary mold in a bottom surface, and supplies aggregate and resin liquid in the mold, It is installed so that the mixer for aggregate, resin liquid, and hardener can be freely attached and detached at the tip of the screw conveyor for aggregate supply, and the rotation of the mixer and the screw conveyor are performed independently, and both rotating shafts are installed on the common rotation axis. It is possible to open the mixed liquid inlet of the resin liquid-hardener mixer to the conveyor side of the outer cylinder detachable part of the mixer and the screw conveyor, and supply the cleaning agent to the mixer, A material feeder for producing a resin concrete pipe, comprising a plurality of notches formed on an outer circumference of a spiral wing of the screw conveyor to enlarge a gap with an inner surface of an outer cylinder. The stirring shaft according to claim 1, wherein a stirring blade which is inclined with the rotational direction and the rotational axis is installed on the outer circumference of the mixer in a direction for transferring the mixture of the aggregate and the resin liquid and the hardener from the base end of the mixer toward the end. Its wings are arranged repeatedly over several stages with wide base and narrow end. Adjacent narrow agitator blades here and there with the connecting plate, It has a stirring blade which is inclined in the opposite direction to the inclined direction at the terminal portion, A material feeder for producing a resin concrete pipe, which is formed by opening a mixture outlet of an aggregate, a resin liquid, and a hardener on a lower surface of an end portion of an outer cylinder. The rotating shaft of the said screw conveyor is a tube axis, Comprising: The rotating shaft of the said mixer is penetrated in the said tube shaft, and the drive prime mover of the rotating shaft of the mixer and the drive prime mover of the rotating shaft of the said screw conveyor are independent. Resin concrete pipe material feeder installed at the base of screw conveyor.