JP2002307426A - Material feeder for manufacture of resin concrete tube - Google Patents

Abstract

PROBLEM TO BE SOLVED: To smoothly transport an aggregate 7 without clogging a resin concrete-manufacturing aggregate-feeding screw conveyor 1 with the aggregate. SOLUTION: 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

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an
The present invention relates to a material feeder that mixes a resin liquid and a curing agent and throws them in to produce a resin concrete pipe.

[0002]

2. Description of the Related Art Conventionally, a material feeder in a resin concrete pipe manufacturing apparatus has been developed, and a dry conveyor is conveyed to a mixer at the tip of the screw conveyor by a screw conveyor provided at a lower end of a dry aggregate hopper (Patent No. 302).
No. 7422).

[0003] Since the bone-dry aggregate contains, in addition to sand for mortar and fine sand, granular aggregate having a relatively large particle size as shown in FIG. 6, the outer periphery of the spiral blade and the screw conveyor during the conveyance by the screw conveyor are included. Between the inner surface of the outer cylinder and the rotation of the spiral blades, and an excessive load is applied to the driving motor.
An unexpected stoppage of transportation occurred, and a serious accident occurred in which only the mixer was rotated and only the resin liquid and the curing agent were supplied into the mixer.

[0004] Further, the stirring blades implanted in the mixer are of uniform width and uniform spacing, and the aggregate having the above-mentioned particle size composition is easily mixed or separated so as to easily separate or separate small and large aggregates. Was difficult.

[0005]

SUMMARY OF THE INVENTION According to the present invention, there is no danger of aggregate particles being caught in the gap between the spiral blade and the outer cylinder in the screw conveyor of the above-mentioned material feeder. To prevent an accidental accident that only the agent is supplied and the damage caused by the accident, and to improve 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. Aim.

[0006]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention relates to an apparatus for manufacturing a resin concrete pipe in which a rotary mold is provided on a floor and an aggregate and a resin liquid are supplied into the mold. A mixer for aggregate, resin liquid, and hardener is detachably provided at the tip of the supply screw conveyor, rotation of the mixer and rotation of the screw conveyor are independently performed, and both rotation shafts are shared by a common rotation shaft. It is provided on the line, and the mixed liquid injection port of the resin liquid / hardening agent mixer is opened on the conveyor side of the outer cylinder attaching / detaching portion between the mixer and the screw conveyor, and the cleaning agent can be supplied to the mixer. A material feeder for resin concrete pipe production, in which a plurality of cutouts are formed on the outer periphery of the spiral blade of the screw conveyor to enlarge the gap with the inner surface of the outer cylinder; In the direction of feeding the mixture of the aggregate and the resin liquid / hardening agent toward the end, a stirring blade that is oblique to the rotation direction and the axis of rotation is planted, and the width of the blade is wider at the base end side and narrow at the end side to several stages. Repeatedly arranged, some adjacent narrow width stirring blades are connected by a continuous plate, the end portion has stirring blades obliquely oblique to the above oblique direction, and aggregate / resin on the lower surface of the terminal end of the outer cylinder. The material conveyor for producing a resin concrete pipe according to the first aspect of the present invention, wherein the screw conveyor has a pipe shaft, and a rotary shaft of the mixer is provided in the pipe shaft. And the drive motor of the rotary shaft of the mixer and the drive motor of the rotary shaft of the screw conveyor are independently provided at the base end of the screw conveyor for producing the resin concrete pipe according to the first or second invention. Composed by material feeder That.

[0007] Therefore, when an aggregate in an absolutely dry state having different particle sizes is supplied to a screw conveyor, and the aggregate is conveyed by the conveyor, the aggregate is clogged (nipped) in a gap between the outer periphery of the spiral blade and the inner periphery of the outer cylinder. However, the rotation of the spiral blade causes the gap to expand in the notch formed on the outer periphery of the blade, so the clogged (sandwiched) aggregate is released between the spiral blades and the clogging or jamming is eliminated.

In a mixer driven to rotate independently of the rotary shaft of the screw conveyor, a wide and narrow stirring blade feeds the mixture from a base end to a terminal end while a wide and narrow stirring blade forms several stages. Stirring is repeated, and stirring is promoted in some places by a continuous plate provided on the narrow stirring blade, so that the whole is uniformly mixed. Then, the mixture can be discharged downward from the discharge port while the mixture is stopped by the oblique stirring blades in the reverse direction from the discharge of the mixture opened on the lower surface of the terminal end portion, and the mixture is reversely stirred to promote the mixing.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS As shown in FIG. 5, a cylindrical rotary mold 12 is placed on a rotary drive wheel 14 and an idle wheel on a floor 11 and the rotary mold 12 is horizontally rotated by the rotation of the drive wheel 14. Rotate at high speed around the center line.

A bone-free aggregate hopper 16 is provided on a support trolley 15 capable of moving back and forth along the horizontal center line, and the lower end of the hopper 16 communicates with the base end of the outer cylinder 4 of the screw conveyor 1.

A resin liquid tank 17, a hardening agent tank 18 and a cleaning agent tank 19 are provided on the supporting carriage 15, and the mixers 3 each having an opening 3 '(mixed liquid inlet) at the upper end of the outer cylinder 4 are provided. They are connected by pipes 17 ', 18' and 19 '.

The aggregate 7 sent from the screw conveyor 1 to the mixer 2 which is detachably provided at the tip of the outer cylinder 4 (FIG. 6)
And the mixture of the resin liquid and the hardener discharged from the opening (mixture liquid inlet) 3 ′ of the mixer 3 to the mixer 2 to mix the aggregate, the resin liquid, and the hardener in the mixer 2. I do.

This mixture is supplied into the high-speed rotary mold 12 from the mixture discharge port 9 opened at the end of the outer cylinder 4 ′ of the mixer 2, so that the resin concrete pipe manufacturing apparatus 1 can be used.
3 (FIG. 5).

The screw conveyor 1 has a rotating shaft 1 'in an outer cylinder 4 and a spiral blade 5 provided on the outer periphery thereof. The rotating shaft 1' is formed by a hollow tube shaft 1 ". A rotary shaft 2 ″ of a rotary shaft (boss) 2 ′ of the mixer 2 is built in the inside of the device.

At the end of the outer cylinder 4 of the conveyor 1 (hereinafter referred to as "conveyor outer cylinder 4"), a mixer outer cylinder 4 'having the same inner diameter is detachably mounted on a common rotation axis c by bolts 4b via flanges 4a, 4a. The distal end of the mixer outer cylinder 4 'is closed by a blind plate 4c, and the distal end of the rotary shaft 2 "of the mixer 2 is supported by a bearing 4d at the center of the blind plate 4c.

FIG. 4 (a) shows the rotation shaft 2 ″.
(B) The keys 2a, 2a are provided as shown in FIG.
And 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 periphery of the boss 2 ', stirring blades 8, 8', 8 "which obliquely obliquely extend in the direction in which the mixture of the aggregate, the resin liquid, and the hardener are sent from the base end to the end are planted. Is oblique to the rotation direction and the rotation axis of the boss 2 '(the same line as the common rotation axis c), and most of the stirring blades 8 from the right end to the left end in FIG. 8 ', 8 ".

However, the two stirring blades 8b shown at the left end
Has a function of pushing back the mixture to be fed, which is oblique in the direction opposite to the oblique direction to the sending direction, forms a forward / reverse stirring portion of the mixture, and is located immediately below, that is, the lower surface of the terminal end of the mixer outer cylinder 4 '. The mixture outlet 9 is opened.

The height (outer end) of the stirring blades 8, 8 ', 8 ", 8b is close to the inner peripheral surface of the outer cylinder 4' of the mixer, and the width is as shown in the developed view of FIG. Three wide and wide stirring blades 8 are planted at the base end (right end), four medium and wide stirring blades 8 'are planted to the left, and narrow (small or narrow) to the left. Are arranged in two rows, and the arrangement of the wide and narrow stirring blades 8 ′ and 8 ″ is repeated in four stages toward the left side toward the end.

The above-mentioned two opposite medium-width wide-width stirring blades 8 at the terminal end
b, two medium- and wide-width stirring blades 8 ′ in the feeding direction are implanted, and the mixture is discharged by the stirring blades 8 ′, 8 ′ in the feeding direction and the stirring blades 8 b, 8 b in the opposite direction. 9
Stir vigorously on top.

The narrow stirring blades 8 ″ adjacent to two rows,
8 "in the first and third stages, connected by a continuous plate 8a as shown in FIGS. 3 (a) and 3 (e), and by rotating the continuous plate 8a, the mixture is pushed in the rotation direction and the feed direction to thereby mix the mixture. Promotes stirring.

After the discharge of the mixture from the discharge port 9 is completed, a cleaning agent is charged into the resin liquid and curing agent mixer 3 in a cleaning tank 19.
To wash the resin liquid and the curing agent in the mixer 3
Further, the resin liquid and the curing agent in the mixer 2 can be washed while rotating the boss 2 ′ and the stirring blades 8, 8 ′, 8 ″, 8b.

Further, the mixer outer cylinder 4 'is separated from the outer cylinder 4 of the screw conveyor 1 by removing the bolt 4b,
Further, the boss 2 'is slid and separated along the common rotation axis c, and further, the boss 2' is separated from the threaded portion 2c formed on the rotary shaft 2 "of the mixer 2 as shown in FIG. The mixer 2 can be completely separated and disassembled from the tip of the screw conveyor 1, or the mixer 2 can be attached to the tip of the conveyor 1 by the reverse operation, and the mixer 2 can be detachably attached to the tip of the screw conveyor 1. Can be provided.

The gap t between the outer periphery of the spiral blade 5 provided on the outer periphery of the rotary shaft 1 'of the screw conveyor 1 and the inner peripheral surface of the outer cylinder 4 is enlarged as shown in FIGS. By forming the notches 6 at every equal opening angle (90 degrees), the aggregates 7 of the particle size fitted or sandwiched in the gap t can be released at the notches 6 and the rotation of the spiral blade 5 Of the aggregate 7 can be smoothly carried out.

The rotary shaft 1 'of the screw conveyor 1 is shown in FIG.
As shown in the figure, the independent motor 10 is driven to rotate via the speed reduction sprockets 20 and 20 'and the endless chain 21 wound around the speed reducer sprockets 20, and the rotating shaft 2 "in the rotating shaft 1' is rotated by another motor 10 '. Therefore, the rotation direction of the rotary shaft 2 "of the mixer 2 can be rotated in the direction opposite to the rotation axis 1 'of the screw conveyor 1, or the rotational angular velocities can be changed in the same direction. .

In FIG. 6, reference numeral 22 denotes a resin concrete pipe;
Reference numeral 3 denotes a reinforcing bar, and reference numeral 24 in FIG. 1 denotes a supply pump provided in the pipes 17 ', 18', and 19 '.

[0027]

Since the present invention is constructed as described above, the aggregate may be caught in the gap between the inner surface of the outer cylinder and the outer periphery of the spiral blade in the aggregate-conveying screw conveyor, and the conveyor may be stopped. Aggregate can be smoothly transferred to the mixer at the tip without any trouble, and there is the effect that the accident of mixing and discharging only the resin liquid and the curing agent due to independent rotation of only the mixer can be prevented.

[0028] In addition, a high quality resin concrete tube can be manufactured by sufficiently mixing the aggregate having various particle sizes with the resin liquid and the hardener by a mixer. Resin liquid and hardener remaining in the mixer can be washed away.

[Brief description of the drawings]

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

FIG. 2A is a vertical sectional front view of the screw conveyor. (B) The figure is a longitudinal sectional front view of another embodiment.
(C) is a longitudinal sectional front view of a conventional screw conveyor.

FIG. 3 (a) is a developed view showing an arrangement of a stirring blade of a mixer. (B) The figure is a front view of one stirring blade as viewed from the line (A) in FIG. (C) The figure is (a) Figure BB
It is the front view of one stirring blade seen from the line. (D) is a front view of one stirring blade as viewed from (A) line CC. (E) is a front view of the two stirring blades and the continuous plate viewed from the line (A) in FIG.

FIG. 4A is an enlarged vertical sectional side view of the mixer.
(B) is an enlarged vertical sectional front view of the mixer.

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

FIG. 6 is an enlarged vertical sectional front view of the resin concrete pipe.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Screw conveyor for aggregate supply 2 Mixer for aggregate / resin liquid / hardener 1 ', 2' Rotating shaft 1 "Tube shaft c Common rotation axis 3 Resin liquid / hardening agent mixer 3 'Mixed liquid inlet 4,4 'Outer cylinder 4 "detachable part 5 spiral blade t gap 6 notch 7 aggregate 8, 8', 8" stirring blade 8a continuous plate 8b reverse oblique stirring blade 9 mixture discharge port 10, 10 'drive motor

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Toshiyuki Noda 2-4-2, Hyakuchihama, Sawara-ku, Fukuoka F-term in Asou Resincon Co., Ltd. 4F201 AA36 AB03 AC06 AG00 BA01 BC02 BC12 BC33 BC37 BD01 BK02 BK15 BK25 BK53 BQ04 BQ16 BQ42 BQ50 BQ52

Claims (3)

[Claims] 1. A resin concrete pipe manufacturing apparatus for providing a rotary mold on a floor surface and supplying an aggregate and a resin liquid into the mold, comprising: an aggregate, a resin liquid,
A hardening agent mixer is detachably provided, rotation of the mixer and rotation of the screw conveyor are independently performed, and both rotating shafts are provided on a common rotating axis. Is opened on the conveyor side of the outer cylinder attachment / detachment part of the mixer and the screw conveyor, so that a detergent can be supplied to the mixer, and an outer cylinder inner surface is provided on the outer periphery of the spiral blade of the screw conveyor. A material feeder for producing a resin concrete pipe, comprising a plurality of cutouts for increasing the gap between the material and the resin. 2. A stirring blade which is oblique to a rotation direction and a rotation axis in a direction in which a mixture of an aggregate, a resin liquid, and a curing agent is sent from a base end to a terminal end of the mixer on an outer periphery of a rotation shaft of the mixer. The blades are arranged repeatedly in several stages, with the width of the blades being wider at the base end and narrower at the end, and several adjacent narrow width stirring blades are connected by a continuous plate, and the end is obliquely oblique to the oblique direction. 2. The material feeder for producing a resin concrete pipe according to claim 1, wherein the material feeder has an agitating blade that performs the operation, and has an opening for discharging a mixture of an aggregate, a resin liquid, and a hardening agent on the lower surface of the terminal end of the outer cylinder. 3. The rotating shaft of the screw conveyor is a tube shaft, and the rotating shaft of the mixer is inserted into the tube shaft.
3. The material feeder for producing a resin concrete pipe according to claim 1, wherein a driving motor for driving the rotary shaft of the mixer and a driving motor for driving the rotary shaft of the screw conveyor are independently provided at a base end of the screw conveyor.