JPH09290908A - Screw conveyor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To stir and mix a product to thereby increase stirring and kneading efficiency by making a charging port at one side of a casing and a discharge port at the other side of the casing and by mounting a transfer screw which extends in the whole length of the cylinder of the casing and has a stirring and kneading blade from the charging port to the middle part thereof. SOLUTION: A product shaped like a small block, a particle, powder or the like is charged in the one end of a casing A from a hopper 2. The charged product is transferred to the other end of the casing A by a screw 4 and is stirred and kneaded by a stirring and kneading blade 5 while it is transferred and is transferred to a discharge port 3 by the screw 4 having no stirring and blade 5 and the product which is stirred and kneaded is discharged from the discharge port 3. The stirring and kneading time in the casing A can be made longer by making the length of the screw 4 having stirring and kneading blade 5 larger than that of the screw 4 having no stirring and kneading blade 5.

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to a screw conveyor.

[0002]

2. Description of the Related Art A conventional screw conveyor is composed of a casing whose both ends are closed and a screw incorporated in the casing. Items such as small pieces, granules and powders introduced from one end of the casing are screwed into the casing. While being conveyed toward the other end of the casing, it is discharged from the other end discharge port of the casing.

[0003]

According to the above-mentioned screw conveyor, the screw in the casing alone cannot stir or knead the product in a short time, and then the product cannot be slowly aged or conveyed while being reacted. Since it cannot be conveyed in a short time after slowly stirring and kneading, there is a problem that stirring and kneading in the popper etc. and time (reaction etc.) must be adjusted before the screw conveyor is loaded. At the same time, there is a problem that the device becomes large.

Although it is possible to use a plurality of screw conveyors, there is a problem that the cost is significantly increased.

Further, since the casing is a single cylindrical body, there is a problem that the carrying capacity is not small.

Therefore, an object of the present invention is to stir, knead, or aged and react during transportation, and significantly improve the efficiency thereof, and to enable transportation of a large volume.

[0007]

In order to solve the above-mentioned problems, the present invention provides a casing with both ends closed in which adjacent surfaces of a plurality of parallel cylindrical bodies communicate with each other in a beaded shape, and both ends of the casing are connected to each other. One end side charging port and the other end side discharging port provided, a screw for transportation provided in the entire length of each cylindrical body of the casing, and stirring provided between the charging port side and the discharging port side of the screw. A screw conveyor consisting of kneading blades is used.

Further, a casing whose both ends are closed such that adjacent faces of a plurality of parallel cylindrical bodies communicate with each other in a daisy chain shape, one end side inlet port and the other end side outlet port provided at both ends of this casing, and the casing The first screw with stirring and kneading blades installed from the inlet side to the middle of each cylindrical body, the second screw installed from the middle to the outlet side of each cylindrical body, and the first screw at high speed A screw conveyor comprising a first driving means provided so as to be driven and a second driving means provided so as to drive the second screw at a low speed is adopted.

Further, a casing having both ends closed in which adjacent faces of a plurality of parallel cylindrical bodies communicate with each other in a daisy chain manner, an inlet provided at both ends of the casing, and an outlet provided in the middle of the casing, A screw conveyor comprising a screw provided to convey from the input port side to the discharge port in each cylindrical body of the casing, and a stirring / kneading blade provided between the input port side and the discharge port side of the screw. To adopt.

Further, a casing whose both ends are closed so that adjacent surfaces of a plurality of parallel cylindrical bodies communicate with each other in a daisy chain manner, an inlet provided at both ends of the casing, and an outlet provided in the middle of the casing, A first screw having a stirring and kneading blade provided in each tubular body of the casing from the inlet side to the middle of the outlet side, and a first screw provided from the first screw in each tubular body to the outlet. A screw conveyor including two screws, a first driving unit provided to rotate the first screw at a high speed, and a second driving unit provided to rotate the second screw at a low speed is adopted.

Further, there may be adopted a construction in which the rotational speed adjusting means is provided on at least one of the first driving means and the second driving means.

[0012]

Embodiments of the present invention will be described below with reference to the accompanying drawings.

In the first embodiment of the present invention, A shown in FIGS. 1 to 3 is a casing.

The above-mentioned casing A is formed by connecting adjacent surfaces of a plurality of parallel cylindrical bodies 1 with both ends closed in a daisy-chained manner. However, a communicating outlet port 3 is provided on the lower peripheral surface of the other end of the casing A.

Further, a screw 4 for carrying from the inlet 2 to the outlet 3 is incorporated into the entire length of each cylindrical body 1 of the casing A.

Further, a stirring / kneading blade 5 is provided between the inlet 2 side of each screw 4 and the middle of the outlet 3 side.

The screw 4 is composed of a shaft member 6 and a spiral blade 7 provided on the outer periphery of the shaft member 6. The stirring and kneading blade 5 is fixed to the spiral blade 7 shown by welding or the like. Alternatively, the spiral blade 7 may be provided on an arm (not shown) projecting from the shaft member 6 instead of being cut and raised (a slit having a U shape is formed and the inside of the slit is projected by bending).

When the screw 4 is incorporated into each tubular body 1, the pitch is shifted so that the spiral blade 7 of the screw 4 on one side does not collide with the spiral blade 7 of the screw 4 on the other side. 4, the opposite peripheral edges of the spiral blades 7 can be overlapped with each other, and the winding directions of the spiral blades 7 are not limited to the same direction. As shown in FIG. , Both sides may be wound to the right.

In this case, as shown in FIGS. 1 and 3, the gears 8 provided at one end of the shaft member 6 of each screw 4 are engaged with each other, and the sprocket 9 provided coaxially with one gear 8 and the motor. Although the chain 12 is passed over the sprocket 11 and the chain 10 for driving, the driving may be performed by a method other than the above.

With the above construction, articles such as small pieces, granules and powders are introduced into one end of the casing A from the introduction port 2.

Then, the charged product is conveyed toward the other end of the casing A by the screw 4, and the stirring and kneading blade 5 stirs and kneads the conveyed product, and the stirring and kneading blade 5 is provided. Not screw 4
The product is conveyed to the discharge port 3, and the stirred and kneaded product is discharged from the discharge port 3.

The stirring and kneading in the casing A is
By making the length of the screw 4 having the stirring / kneading blade 5 longer than the length of the screw 4 having no stirring / kneading blade 5 as shown in the figure, the stirring / kneading time (range) can be extended.

Of course, in addition to stirring and kneading, it is possible to prolong the treatment reaction and aging time of sludge in which a chemical is added. Reference numeral 13 in the drawing denotes a bearing for the shaft member 6.

In the second embodiment of the present invention, as shown in FIGS. 4 and 5, in each cylindrical body 1 of the casing A similar to that of the first embodiment, the inlet 2 to the outlet 3 are provided. The first screw 21 having the stirring and kneading blades 5 is incorporated halfway to the side, and the second screw 22 (without the stirring and kneading blades 5) is incorporated from the midway to the discharge port 3.

The first screw 21 and the second screw 22 are composed of a shaft member 6 and a spiral blade 7 provided on the entire length of the outer circumference of the shaft member 6, and are opposed to the opposite ends of the shaft members 6 and 6. The end to be rotatably supported by the bearing 13 is agitating,
The kneading blades 5 are the same as those in the first embodiment, and the description thereof will be omitted.

The first screw 21 is driven by the first driving means 23, and the second screw 22 is driven by the second driving means 24 which rotates at a lower speed than the first screw 21.

The above-mentioned first drive means 23 and second drive means 24 are one gear 8 that meshes in the same manner as in the first embodiment.
The motor 10 is individually driven via the sprockets 9 and 11 and the chain 12, but the first screw 21 is driven from one motor via an appropriate transmission mechanism.
May be rotated at high speed and the second screw 22 may be rotated at low speed.

With the above construction, articles such as small lumps, granules and powders are introduced into one end of the casing A from the introduction port 2.

The introduced product is conveyed toward the other end of the casing A by the first screw 21, and is agitated and kneaded by the agitating / kneading blade 5. Needless to say, good stirring and kneading can be carried out during the conveyance along with the high-speed rotation of the first screw 21, and the material can be aged or reacted.

First screw 21 to second screw 2
The product conveyed toward 2 is conveyed toward the other end of the casing A by the second screw 22 and discharged from the discharge port 3.

Further, due to the difference in rotational speed between the first screw 21 and the second screw 22, the feed amount by the first screw 21 is large and the feed amount by the second screw 22 is small.

As a result, the conveyance of the first screw 21 within the entire length of the machine becomes stagnant, and further excellent stirring, kneading, aging, and reaction acceleration can be performed.

In the third embodiment of the present invention, as shown in FIGS. 6 and 7, on the upper surfaces of both ends of the casing A similar to the first embodiment, the inlets 2 and 2 communicating with each other are provided in the casing A. A discharge port 3 communicating with the bottom surface of
Inside each cylindrical body 1 of the casing A, a screw 4 that conveys from both charging ports 2 toward the discharging port 3 is provided.

A stirring and kneading blade 5 is provided between the charging port 1 side and the discharging port 3 side of the screw 4.

In the illustrated case, each screw 4 has one spiral blade 7 provided on the outer periphery of the shaft member 6 from both ends of the shaft member 6 toward the middle, one of which is left-handed and the other is right-handed. Has become.

The stirring / kneading blades 5 and the driving means are the same as those in the first embodiment, and their explanations are omitted.

With the above construction, both charging ports 2, 2
From the above, articles such as small pieces, granules and powder are put into both ends of the casing A.

The introduced product is conveyed toward the middle of the casing A by the screw 4, and the product being conveyed is agitated and kneaded by the agitating / kneading blade 5, and the screw 4 having no agitating / kneading blade 5 is provided. It is conveyed toward the discharge port 3 and discharged from the discharge port 3.

In the fourth embodiment of the present invention, as shown in FIGS. 8 and 9, in the same casing A as in the third embodiment, agitation is performed from both ends of the casing A to the middle of the discharge port 3. , The first screw 31 having the kneading blades 5 is connected to the second screw 3 from the first screw 31 to the discharge port 3.
2 are provided respectively, and the first screw 31 is
It is rotated at high speed by the driving means 33, and the second screw 32
Is rotated at low speed by the second drive means 34.

The stirring and kneading blades 5 are the same as those in the first embodiment, and the description thereof will be omitted.

The first screw 31 supports a pipe shaft 36 which freely rotates by the end of the casing A and a bearing 35 in the casing A, and the spiral blade 7 is formed on the outer circumference of the pipe shaft 36. , The second screw 32 is the bearing 3
The shaft member 6 is supported by 7, and a spiral blade 7 is provided on the outer periphery of the shaft member 6 which is partially penetrated by the pipe shaft 36.

Further, the first driving means 33 rotates the tube shaft 36 from the motor through the sprocket and the chain,
The second drive means 34 is adapted to rotate the shaft member 6 from a motor via a sprocket and a chain.

With the above construction, both charging ports 2, 2
From the above, items such as small pieces, granules and powder are put into the casing A.

The charged product is conveyed toward the discharge port 3 by the first screw 31, and is stirred and kneaded by the stirring and kneading blade 5.

Needless to say, good stirring and kneading can be carried out during the course of conveyance as the first screw 31 rotates at high speed, and aging or reaction can be carried out.

First screw 31 to second screw 3
The product conveyed toward 2 is conveyed toward the discharge port 3 by the second screw 32 and discharged from the discharge port 3.

Further, due to the difference in rotational speed between the first screw 31 and the second screw 32, the feed amount by the first screw 32 is large and the feed amount by the second screw 32 is not small.

As a result, the conveyance of the first screw 31 within the entire length of the machine becomes stagnant, and further excellent stirring, kneading, aging, and reaction become possible.

In the fifth embodiment of the present invention, at least one of the first drive means 23 and the second drive means 24 of the second embodiment, and the first drive means 33 of the fourth embodiment,
The rotation speed adjusting means 41 is provided on at least one of the second driving means 34.

As the rotation speed adjusting means 41, for example, a continuously variable transmission is used, and in the case shown in the figure, the second screw side is changed in speed. However, the first screw side or the first screw side and the first screw side It may be provided on the 2 screw side.

Then, depending on the product, stirring, kneading, aging,
The reaction can be adjusted freely.

In the casing A, the pitch is increased by directing all or part of the spiral blade 7 of each screw in the first to fourth embodiments toward the discharge port 3 side. That is, it can be prevented.

The stirring and kneading in the casing A is
In addition to the stirring and kneading blades 5, the spiral blades 7 of the screw 4 which are juxtaposed in parallel with each other also perform extremely well, and both the blades 5 and the spiral blades 7 remarkably improve the performance.

[0054]

The screw conveyor according to the present invention is
With the above-described structure, it is possible to stir and knead the article that is being conveyed from the input port to the discharge port.

Further, due to the difference in rotation speed between the first screw and the second screw, not only can the stirring and kneading be performed very well, but also the aging and reaction can be performed, and the above stirring, kneading, and Aging and reaction can be freely changed.

Particularly, since a casing formed by connecting adjacent surfaces of a plurality of parallel cylindrical bodies in a bead-like manner is used, and a screw is incorporated in each cylindrical body of this casing, the efficiency of stirring and kneading is remarkably improved. It is possible to increase the capacity and significantly increase the capacity.

Further, the adjacent peripheral edges of the spiral blades of the parallel screws can be agitated and kneaded well.

[Brief description of drawings]

FIG. 1 is a partially cutaway plan view of a first embodiment of the present invention.

FIG. 2 is a sectional view taken along line XX in FIG.

[Fig. 3] Vertical side view

FIG. 4 is a partially cutaway plan view of the second embodiment.

FIG. 5 is a longitudinal side view.

FIG. 6 is a partially cutaway plan view of the third embodiment.

FIG. 7 is a longitudinal side view.

FIG. 8 is a partially cutaway plan view of a fourth embodiment.

FIG. 9 is a longitudinal sectional side view.

[Explanation of symbols]

 A casing 1 tubular body 2 input port 3 discharge port 4 screw 5 stirring and kneading blade 6 shaft material 7 spiral blade 8 gears 9, 11 sprocket 10 motor 12 chain 13 bearing 21 first screw 22 second screw 23 first driving means 24 2nd drive means 31 1st screw 32 2nd screw 33 1st drive means 34 2nd drive means 35 Bearing 36 Tube shaft 37 Bearing 41 Rotation speed adjusting means

Claims (5)

[Claims] 1. A casing of which both ends are closed so that adjacent faces of a plurality of parallel cylindrical bodies communicate with each other in a daisy chain manner, one end side inlet port and the other end side outlet port provided at both ends of the casing, and the casing A screw conveyor comprising a conveying screw provided along the entire length of each cylindrical body, and a stirring and kneading blade provided between the input side and the discharge side of the screw. 2. A casing having both ends closed in which adjacent faces of a plurality of parallel cylindrical bodies communicate with each other in a daisy chain manner, one end side inlet port and the other end side outlet port provided at both ends of the casing, and the casing The first screw with stirring and kneading blades installed from the inlet side to the middle of each cylindrical body, the second screw installed from the middle to the outlet side of each cylindrical body, and the first screw at high speed A screw conveyor comprising first driving means provided for driving and second driving means provided for driving the second screw at a low speed. 3. A casing having both ends closed, in which adjacent surfaces of a plurality of parallel cylindrical bodies communicate with each other in a daisy chain shape, an inlet provided at both ends of the casing, and an outlet provided in the middle of the casing. A screw conveyor comprising a screw provided to convey from the input port side to the discharge port in each cylindrical body of the casing, and a stirring / kneading blade provided between the input port side and the discharge port side of the screw. . 4. A casing whose both ends are closed so that adjacent surfaces of a plurality of parallel cylindrical bodies communicate with each other in a daisy chain shape, an inlet provided at both ends of the casing, and an outlet provided in the middle of the casing, A first screw having a stirring and kneading blade provided in each tubular body of the casing from the inlet side to the middle of the outlet side, and a first screw provided from the first screw in each tubular body to the outlet. 2 screws and the above 1st
A screw conveyor comprising first driving means provided to rotate the screw at a high speed and second driving means provided to rotate the second screw at a low speed. 5. The screw conveyor according to claim 2, wherein a rotation speed adjusting means is provided on at least one of the first driving means and the second driving means.