JPH11255314A - Raw material supplying and transporting device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To transport raw material smoothly to the exhaust part with no risk that the material clogs to a screw body in the region corresponding to the supply part. SOLUTION: A raw material supplying and transporting device consists of a screw conveyor of such a structure that a screw body 2 rotated by a first driving means is incorporated in a cylindrical casing 1, wherein a supply part 4 is furnished at one end of the casing 1 while an exhaust part furnished at the other end, and the supply part 4 is in communication with the casing and is formed as a cylinder body 4A opening in the upper part, and the exhaust part exhaust the material fed by the screw body 2 from the supply part 4 to outside the casing 1. The supply part 4 is furnished with a push-out device having a pusher member 5 in the cylinder, and the pusher member 5 chiefly consists of a rod, is directed to the rotating space of the screw body 2, and is connected with a second driving means so that the tip can approach to near the rotating space or it can reciprocate in the longitudinal direction within the rotating space.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a raw material supply and transfer device.

[0002]

2. Description of the Related Art Conventionally, as a material supply and transfer device, FIG.
As shown in FIG. 1, there is known a screw conveyor in which a screw body 2 incorporated in a cylindrical casing 1 is rotated by a driving means 3. At one end of the casing 1, a raw material is supplied from a supply section 4 which is provided in communication with an internal space of the casing 1 and is formed as a cylindrical body which opens upward, and is transferred from the supply section 4 by a screw body 2. The discharged raw material is discharged to the outside of the casing 1 from a discharge portion 11 provided on the other end side of the casing 1.

[0003] The above-mentioned raw material supply and transfer device is easy to have a closed structure, and can prevent dust, odor and gas from being scattered. The amount of supply from the supply section into the casing is almost proportional to the rotation speed of the screw body. Because the amount of transfer from the supply unit to the discharge unit through the inside of the casing can be adjusted by changing the number, it is practically used as a supply and transfer device for viscous liquids and powders as raw materials.

[0004]

However, if the raw material contains lumps or the raw material has an adhesive property, the raw material is smoothly plugged in the screw body in a region corresponding to the supply section. There was a risk that it would not be transferred.

An object of the present invention is to provide a raw material supply / transfer apparatus which solves such a problem and can smoothly transport raw materials without clogging the above-mentioned area.

[0006]

According to a first aspect of the present invention, there is provided a raw material supply / transfer device, in which a screw body in which a steel strip is spirally wound around a shaft which is rotated by a first driving means is built in a cylindrical casing. A screw conveyor having a supply portion at one end of the casing and a discharge portion at the other end, wherein the discharge portion discharges the raw material transferred from the supply portion by a screw body to the outside of the casing. Has become.

In the apparatus of the present invention having such a configuration, the supply section is formed as a cylinder which is provided in communication with the casing and opens upward, and the supply section is provided with an extrusion device having a pusher member in the cylinder. ing.

The pusher member is mainly composed of a rod-shaped member and is connected to the second drive means so that the tip thereof can approach the rotation space of the screw body to approach the rotation space or reciprocate longitudinally in the rotation space. Have been.

In the present invention having the above-described structure, it is preferable that the pusher member is disposed at an angle to a horizontal plane so that the tip is directed downward. By doing so, the raw material can be pushed smoothly toward the screw body at the tip of the pusher member in combination with the weight of the raw material, and the pushed raw material can be sent out in the transfer direction.

[0010] Further, the pusher member is provided with an auxiliary member for enlarging a surface perpendicular to the longitudinal direction of the pusher member at the tip, so that the pusher member pushes the raw material in a wider area, so that the pusher member is more effective. Raw material can be supplied.

Further, the above-mentioned pusher member is pressed against the side surface of the screw with the rotation of the screw body in the rotation space of the screw body so as to be able to elastically bend in the transfer direction, thereby rotating the screw body in the casing. When the pusher member is pushed into the space, the material can be pushed into the casing without hindering the rotation of the screw body, and the material in the casing can be sent out in the transfer direction.

[0012] Further, the supply section is provided with a damper material which regulates the passage interval of the supply from the supply section into the casing, so that the supply amount from the supply section into the casing can be adjusted according to the nature of the raw material. Can be adjusted.

Further, by providing the pusher member at a plurality of positions in the axial direction of the screw body, the effect of pushing the raw material by the pusher member in a wide area in the axial direction of the screw body is obtained, and the raw material is supplied more smoothly. can do.

Further, a plurality of pusher members can be provided. In this case, by setting the reciprocating motion to be repeated in order from the supply section side, the action of sequentially feeding the raw materials forward in the transfer direction can be obtained, and the raw materials can be more smoothly fed. Can be supplied. At this time, a camshaft or a cylinder having a cam corresponding to each pusher may be provided as a drive device of the pusher member, and the reciprocation may be automatically performed in order.

[0015]

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

The parts common to those of the conventional supply / transport apparatus shown in FIG. 7 are denoted by the same reference numerals, and the description thereof is omitted.

(First Embodiment) FIG. 1 is a longitudinal sectional view showing a supply and transfer device according to a first embodiment of the present invention, and FIG. 2 is a sectional view taken along line II-II of FIG.

The above-mentioned supply / transfer device incorporates a screw body 2 in a tubular casing 1 placed horizontally,
Are rotated by a motor 3 as a first driving means.

A supply section 4 is provided at one end of the casing 1, and a discharge section 11 is provided at the other end. The supply section 4 is provided with a pusher member 5 as an extrusion device.

The supply section 4 has a cylindrical body 4A provided in communication with the casing 1 and opening upward.
The pusher member 5 is attached so as to be able to reciprocate in the longitudinal direction through the pusher member 5.

The pusher member 5 is mainly composed of a rod-shaped member body. The rotation space of the screw body 2 The outer periphery of the screw of the screw body is directed to a comprehensive cylindrical space drawn by rotation so that its tip can approach the vicinity of the rotation space in the longitudinal direction. Second drive means (not shown), for example, each rod is connected to a camshaft or cylinder having a corresponding cam for reciprocating.

The pusher member 5 is provided at a plurality of positions in the axial direction of the screw body 2, and its tip is pushed toward the screw body at the tip of the pusher member together with the weight of the material. More preferably, it is disposed at an angle to the horizontal plane so as to be located below.

In the present embodiment, the number of pushers is set at four in the axial direction as an example. However, the same effect can be obtained by providing less than four (for example, one) or more than four pushers. obtain.

The second driving means for driving a plurality (four) of pusher members of the present embodiment reciprocates each pusher in the axial direction of the screw body 2 from the supply section side to the transfer direction in order to feed the raw material. It is more effective to set the sheet to be sent in the transfer direction. For example, in the case of a cam, a cam shaft in which the phase of the cam corresponding to each pusher member is shifted by 90 ° is used. In the case of a cylinder device, each pusher member may be connected to each cylinder device, and these cylinders may be operated in order.

(Second Embodiment) Next, a material supply and transfer apparatus according to a second embodiment of the present invention will be described with reference to FIG.
It will be described based on.

Parts common to those of the raw material supply and transfer apparatus of the first embodiment shown in FIGS. 1 and 3 are denoted by the same reference numerals, and description thereof will be omitted.

FIG. 3 is a longitudinal sectional view showing a raw material supply and transfer device according to a second embodiment of the present invention.

The raw material supply / transfer device has a pusher member 15 as an extruder in the supply section 4.

The pusher member 15 has a substantially cylindrical auxiliary member 7 at its tip for enlarging a surface perpendicular to the longitudinal direction of the pusher member 15.

The auxiliary member 7 has a screw portion of a substantially conical member 7A attached to a screw hole at the tip of the pusher member 5 via a washer 7B.

In the present embodiment, the auxiliary member 7 has a truncated conical shape. However, the auxiliary member 7 may have another shape, and it is preferable that the resistance due to the raw material applied when the pusher member retreats is small. For example, a plate-shaped member that falls on the screw body side when receiving resistance due to the raw material when the pusher member retreats, and when the pusher member advances to the rotating space of the screw body, the plate-shaped member that has received the resistance due to the raw material again moves in the pushing direction. It is also possible to make them almost vertical.

(Third Embodiment) Next, a material supply and transfer apparatus according to a third embodiment of the present invention will be described with reference to FIG.
It will be described based on.

Parts common to those of the raw material supply and transfer apparatus of the first embodiment shown in FIGS. 1 and 3 are denoted by the same reference numerals, and description thereof is omitted.

FIG. 4 is a sectional view showing a raw material supply and transfer device according to a third embodiment of the present invention at the same position as in FIG.

The raw material supply / transfer device has a pusher member 25 as an extruder in the supply section.

The pusher member 25 is connected to the pusher member 2.
At a substantially central portion in the axial direction of the screw 5, there is provided a bending portion 8 (for example, a spring) which can be elastically bent in the transfer direction by being pressed against the side surface of the screw as the screw rotates in the rotation space of the screw. ing.

The pusher member 25 supplies the raw material into the casing when the tip of the pusher member 25 is directed in the rotation space of the screw body 2 in the longitudinal direction into the rotation space, and the screw member 2 is rotated in the rotation space of the screw body. The material in the casing is sent out in the transfer direction while being bent in the transfer direction by being pressed against the side surface of the screw due to the rotation, and the bent portion 8 is eventually bent and returned to the predetermined position again by the elasticity of the bent portion 8. ing.

In this embodiment, as shown in FIG. 4, the pusher member 25 moves forward to a position indicated by a broken line in the lower part of the rotation space of the screw body 2 and is pressed against the side surface of the screw as the screw body 2 rotates. Deflected to the position of the two-dot line in the transfer direction,
After returning to the original position indicated by the broken line again by the elastic restoring force of the bending portion 8 itself, the bending portion 8 retreats.

(Fourth Embodiment) Next, a material supply and transfer apparatus according to a fourth embodiment of the present invention will be described with reference to FIG.
A description will be given based on FIG.

Parts common to those of the raw material supply and transfer apparatus of the first embodiment shown in FIGS. 1 and 3 are denoted by the same reference numerals, and description thereof will be omitted.

FIG. 5 is a longitudinal sectional view showing a raw material supply and transfer device according to a fourth embodiment of the present invention, and FIG.
It is an I-VI sectional view.

In the raw material supply / transport apparatus, a plate-shaped damper member 9 for regulating the amount of raw material supplied from the supply part 4 into the casing 2 is provided on the cylindrical body 4A of the supply part 4 in a supporting part 10A.
Is provided via

The damper member 9 can adjust the distance between the raw material supply passages at the connection portion between the supply part 4 and the casing 2, and the damper member 9 is set at an appropriate position by a fixing screw 10 A attached to the support part 10. It is designed to be fixed.

The interval between the raw material supply passages is adjusted according to the type of the raw material to be supplied. For example, the viscosity of the raw material and the fact that lumps are easily generated are taken into consideration.

[0045]

As described above, according to the raw material supply / transfer apparatus of the present invention, an extruder having a pusher member is provided in the supply section, and the pusher member reciprocates, and the raw materials in the vicinity of the supply section are successively transferred to the casing. By pushing the screw body into the rotation space, the material is effectively prevented from clogging the screw body in a region corresponding to the supply unit.

Further, the pusher member is provided with an auxiliary member at its tip for enlarging a surface perpendicular to the longitudinal direction of the pusher member, whereby the effect of pushing the raw material into the casing in a wider area can be obtained. By feeding out the raw material in the casing, the raw material can be prevented from being clogged in the screw body in a region corresponding to the supply portion, and the raw material can be more effectively supplied and transferred.

Further, the pusher member is pressed by the screw body with the rotation of the screw body in the rotation space of the screw body so that the pusher member can be elastically bent in the transfer direction, so that the pusher member can be reliably inserted into the rotation space of the screw body. The raw material can be pushed in, and the raw material in the casing can be more reliably sent out, thereby preventing the raw material from being clogged in the screw body in a region corresponding to the supply unit.

Further, the supply section adjusts the supply amount according to the properties of the raw material by providing a damper material that regulates the supply amount from the supply section into the caging in an adjustable manner.
It is also possible to prevent the raw material from being clogged in the supply section, and it is possible to cope with a raw material having more properties.

Further, if there are a plurality of pusher members,
The greater the number of pusher members, the higher the effect. Further effects are obtained by reciprocating a plurality of pusher members sequentially in the direction in which the raw material is transferred from the supply section. These pusher members can be controlled with a relatively simple structure using a cylinder or a cam having a camshaft.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view of a raw material transport device according to a first embodiment of the present invention.

FIG. 2 is a sectional view taken along line II-II of FIG.

FIG. 3 is a longitudinal sectional view of a raw material transport device according to a second embodiment of the present invention.

FIG. 4 is a cross-sectional view of the raw material transport device according to a third embodiment of the present invention, taken from the same angle as in FIG. 2;

FIG. 5 is a longitudinal sectional view of the raw material transport device according to the first embodiment of the present invention.

FIG. 6 is a sectional view taken along line VI-VI of FIG. 5;

FIG. 7 is a front view of a conventional raw material transfer device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Casing 2 Screw body 3 1st drive means 4 Supply part 4A cylinder 5 Pusher member 7 Auxiliary member 8 Flexure member 9 Damper member 11 Discharge part

Claims (9)

[Claims] 1. A screw conveyor in which a screw body which is rotated by a first drive means is housed in a cylindrical casing, the screw conveyor having a supply section at one end and a discharge section at the other end. The supply unit is formed as a cylinder that is provided in communication with the casing and opens upward, and the discharge unit is a supply transfer device that discharges the raw material transferred from the supply unit by the screw body to the outside of the casing. Is provided with an extrusion device having a pusher member in the cylindrical body, and the pusher member is mainly composed of a rod-shaped member and is directed to the rotation space of the screw body so that the tip can approach or be close to the rotation space. A supply and transfer device connected to a second drive means for reciprocating in a longitudinal direction. 2. The supply and transfer device according to claim 1, wherein the pusher member is disposed at an inclined angle with respect to a horizontal plane such that a tip of the pusher member faces downward. 3. The material supply / transfer device according to claim 1, wherein the pusher member has an auxiliary member at a tip end for increasing a plane perpendicular to the longitudinal direction of the pusher member. . 4. The pusher member is pressed by the screw body with rotation of the screw body in the rotation space of the screw body and is capable of elastically bending in the transfer direction. The material supply / transfer device according to any one of the above items. 5. The supply section is provided with a damper member that regulates the amount of raw material supplied from the supply section to a connection portion with the casing in a freely adjustable manner.
The raw material supply device according to any one of the above. 6. The supply and transfer device according to claim 1, wherein the pusher member is provided at a plurality of positions in the axial direction of the screw body. 7. The supply and transfer device according to claim 6, wherein the plurality of pusher members are set so as to repeat reciprocating motion in order from the supply unit side. 8. The supply and transfer device according to claim 7, further comprising a cam shaft having a cam corresponding to each pusher as a driving device for the plurality of pusher members. 9. The supply and transfer device according to claim 7, wherein the driving device for the plurality of pusher members is provided with a cylinder corresponding to each pusher member.