JPH09295691A - Content remaining preventive device at discharging port of-container - Google Patents

Abstract

PROBLEM TO BE SOLVED: To easily replace the hopper part at low equipment cost even for an already existing container without changing the volume of the container, and prevent the adhesion of a residue and a bridging phenomenon of a content in the container from generating to completely discharge the content of the container from the discharging port. SOLUTION: A container 10 guides a content Q in the container to a discharging port 13 by a hopper part 12 communicating with a straight body part 11, and discharges the content Q. For such a container 10, an elastic body 14 having a repulsive restoring action to a press-expansion by the self weight of the content Q of the container, is provided by inserting from the straight body part 11 to the discharging port 13 so that it may be separated to the internal side of the container 10 from the inner peripheral wall surface of a connected corner part P between the straight body part 11 and the hopper part 12. This elastic body 14 is formed into an elastic hopper film 14 having a lower opening part 14B of a small diameter, which gradually becomes narrower as becoming closer to the bottom. Then, the upper opening part 14A is fixed to the inner peripheral wall surface of the straight body part 11 directly above the hopper part 12 under a state wherein the top is open, and the lower opening part 14B is hung under a non-contact open state directly above the discharging port 13 in the container 10 for the constitution.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention mainly relates to all containers having a hopper, and more particularly to a contents residue preventing device at a container discharge port for completely discharging contents of a container such as powder or small particles. Is.

[0002]

2. Description of the Related Art In recent years, when a standard hopper part made of steel for discharging the contents of a container is provided, as shown in FIG. 5, a straight body part 2 of the container 1 and a hopper part 3 having a predetermined inclination angle. On the inner wall surface of the connecting corner portion P with, the residual adhesion of the container contents Q and the bridge phenomenon (bridge phenomenon) due to the crushing adhesion chain occur, which is an obstacle to the complete discharge of the container contents Q to the discharge port 4. It was. Further, in the case where residual adhesion occurs in the container 1, conventionally, the inside of the container 1 is manually removed, or a square plate (not shown) is provided in the container 1 to easily reduce the residue. , In case of natural outflow,
In particular, it is necessary to set the so-called hopper angle, which is the inclination angle of the hopper portion 3, to be equal to or more than the repose angle of the container contents Q.
Further, there is one in which a mechanical special device such as a circle feeder is arranged directly above the discharge port at the bottom of the container.

[0003]

However, in the conventional example, when the residual and bridge phenomena occur due to spontaneous outflow, the inclination angle of the steel-made standard hopper portion 3 is completely changed unless necessary. Since the above preventive measures cannot be expected, the existing container cannot be used as it is, and the construction cost due to the site split joining accompanying the remake of the hopper part 3 and the risk at the time of manual removal work, etc. Accordingly, there is a problem that the facility cost is generally high if the work is continued every time. Further, there is a problem that the volume of the container 1 is significantly changed due to the change of the hopper section 3, and a reduction in the container volume is particularly observed.

The present invention has been made in view of the above problems, and it is possible to easily replace the hopper portion of an existing container at a low facility cost and to change the contents of the container without changing the volume of the container. Residual adhesion and cross-linking phenomenon (bridge phenomenon)
It is an object of the present invention to provide a device for preventing contents from remaining in a container discharge port, which prevents the above-mentioned phenomenon and allows the container contents to be completely discharged from the discharge port.

[0005]

In order to achieve the above-mentioned object, in the present invention, a straight body portion, a hopper portion communicating with the straight body portion, and a container content led out from the hopper portion are provided. In a container having a discharge port for flowing out, pressure expansion by the self-weight of the contents interposed from the straight body part toward the discharge port so as to be separated from the inner peripheral wall surface of the connecting corner portion of the straight body part and the hopper part An elastic body having an elasto-repellent restoring action against, and a repetition between a shape along the inner peripheral wall surface of the connecting corner portion and a contracted and restored shape due to the collapse of the contents thrown in from the straight body side of the elastic body. It is characterized in that the contents are fluidly drawn out toward the outlet side and discharged by the expansion and contraction movement.

Further, the elastic body is an elastic hopper membrane having a small-diameter lower opening which is gradually narrowed as the hopper inclination angle becomes more than the repose angle of the contents downwards. The upper opening of the elastic hopper membrane is fixed to the inner wall surface of the straight body portion immediately above the hopper so as to be open, and the lower opening is hung above the discharge port in the container in a contactless open state.

Further, in the elastic body, the upper opening is fixed to the inner peripheral wall surface of the straight body portion immediately above the hopper portion so as to be opened upward,
The lower opening is fixed directly above the discharge port in the container, and is stretched and installed in a substantially frustoconical cylindrical shape between the straight body part and the discharge port, and the elastic body, the straight body part and the hopper part are provided. A space for allowing the elastic body to expand and contract can be formed between the inner peripheral wall surface and the connecting corner portion.

Alternatively, air suction / exhaust means for suctioning or exhausting the space between the elastic body and the inner peripheral wall surface of the straight body portion and the connecting corner portion of the hopper portion is provided on the outer periphery of the hopper portion, and the elastic body is provided with It may be one that has been subjected to forced repetitive expansion and contraction movements by air pressure.

The air intake / exhaust means may absorb / exhaust the heating and cooling air for melting, solidifying and drying the contents. It should be noted that an elastic hopper membrane may be hung downward from the container into which the contents of the container flow out so as to open downward.

In the container residual discharge preventing device according to the present invention, the elastic hopper membrane made of an elastic body having a resilient and repellency restoring function is installed from the straight body portion toward the discharge port. Since the self-weight of the contents charged in the container is stretched along the shape of the container, the decrease of the charging volume of the container is avoided. Then, when the content in the container is discharged from the discharge port, the straight body portion is restored by the action of returning and contracting the elastic hopper film to the conventional shape and the discharge flow action due to the reduction of the weight of the content on the elastic hopper film. It is possible to prevent residual adhesion of the contents on the inner peripheral wall surface of the connecting corner of the hopper.

The space portion formed between the elastic body and the inner peripheral wall surface of the connecting body of the straight body portion and the hopper portion allows the expansion and contraction movement of the elastic body. When the contents thrown in from the inside collapse, the expansion / contraction motion is repeated toward the inner wall surface side of the connecting corners, which causes the contents to flow to the outlet side while destroying the bridge phenomenon (bridge phenomenon). To be discharged and discharged.

Further, the air suction / exhaust means provided on the outer periphery of the hopper portion for sucking or exhausting the space portion between the elastic body and the inner peripheral wall surface of the connecting body of the straight body portion and the hopper portion is configured to supply air to the space portion. By supplying, pressurizing, and exhausting pressure repeatedly, the elastic body is forced to repeatedly expand and contract due to air pressure, so that the accumulated adhered contents at the connecting corners are gradually collapsed by the loosening action of air suction and exhaustion. Then, the bridge phenomenon is gradually removed, and when it reaches the straight body part, the bridge phenomenon cannot be maintained due to the self-weight of the contents, and the bridge body is destroyed.

[0013]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a block diagram showing an embodiment of the present invention;
Relates to, for example, all containers having a hopper part, and in particular, is a container provided with a content residue preventing device at a container discharge port for completely discharging the container contents such as powder and small particles. As shown in FIGS. 1 and 2, a cylindrical or polygonal straight body portion 11 and an inclination angle communicating with the straight body portion 11 and exhibiting a substantially fan-shaped cross section, for example, an inclination angle of about 45 degrees. Hopper unit 12 and the hopper unit 12
In a container having a discharge port 13 for discharging the contents Q of the container to the outside, the entire peripheral side surface is separated from the inner peripheral wall surface of the connecting corner portion P of the straight body portion 11 and the hopper portion 12 toward the inner side of the container. In this state, the upper opening 14A is fixed to the inner peripheral wall surface of the straight body portion 11 immediately above the hopper portion 12 in an upper open state, and the lower opening portion 14B is drooped in a contactless release state directly above the discharge port 13 in the container. An elastic hopper membrane 14 formed by an elastic body such as rubber suspended in the hopper, which gradually becomes narrower as the hopper inclination angle becomes lower than the repose angle of the contents so as to become narrower and has a substantially nozzle-shaped cross section. Is configured to be detachably interposed. This elastic hopper membrane 14 is
It is assumed that the container contents Q have an arbitrary elastic-repellent restoring action against pressure expansion due to its own weight, and the characteristic that the action force is concentrated in the central portion of the container 10 by the elastic-repellent restoring action and the flow discharge action is utilized. That is, in principle, as the acting force, the upper opening 1
The mounting position of 4A and the elastic hopper membrane 14 always become a straight line to maintain the angle of repose, and at the final stage, the elastic hopper membrane 1
It is assumed that the contraction acting force of 4 causes the complete discharge. The elastic hopper film 14 has a compatibility with the setting conditions of the various containers 10.

As shown in FIG. 2, the elastic hopper membrane 14 can be attached / detached to / from the upper inner peripheral wall surface of the connecting corner portion P of the straight body portion 11 and the hopper portion 12 with an upper opening portion 14A opened upward. The upper opening 14A of the elastic hopper membrane 14 is pressed against the upper fixing ring (not shown) provided on the inner wall surface side of the straight body part 11 by means of an annular upper pressing member 15 as a mounting member. Fixed,
It is assumed that it is fixed to the inner wall surface side of the straight body portion 11 by means of an appropriate fastening member such as a countersunk bolt via the upper pressing metal fitting 15.

Alternatively, as shown in FIGS. 3 and 4, in addition to fixing the upper opening 14A of the elastic hopper membrane 14,
Instead of suspending the lower opening 14B in a contactless release state directly above the discharge port 13 in the container 10, the lower opening 14B is mounted directly above the discharge port 13 in the container as a mounting member. It is fixed to the lower fixing ring (not shown) side provided on the inner peripheral wall surface of the lower end of the hopper portion 12 via 16 with an appropriate fastening member such as a countersunk bolt, and the straight body portion 11 and the discharge port 13 are fixed. Alternatively, it may be stretched in a substantially frustoconical cylindrical shape at an inclination angle of about 60 degrees. At this time,
As shown in FIG. 4, the elastic hopper membrane 14 and the straight body portion 11
And a space portion S for allowing the expansion and contraction movement of the elastic hopper membrane 14 between the inner peripheral wall surface of the connecting corner portion P of the hopper portion 12.
Is formed, and the container contents Q thrown in from the side of the straight body portion 11 of the elastic hopper membrane 14 through the space S collapses, and the repeated expansion and contraction movement toward the inner peripheral wall surface side of the connecting corner portion P is performed. The bridge phenomenon.
While destroying the container, the contents Q of the container are fluidly drawn to the discharge port 13 side and discharged.

Further, on the outer periphery of the hopper portion 12,
Elastic hopper membrane 14, the straight body portion 11 and the hopper portion 1
Air intake / exhaust means 17 for injecting or exhausting the airtight space S between the inner peripheral wall surface of the connecting angle portion P of the two through the air supply port 17A for pressurization and the air exhaust port 17B for exhaustion. May be provided, and the elastic hopper membrane 14 may be forced to perform repeated repeated expansion and contraction movements by air pressure. At this time, by repeating pressurization and exhaust to the space portion S, the connecting corner portion P of the straight body portion 11 and the hopper portion 12 is
The container content Q can be collapsed from the inner wall surface side, and if the vertical portion of the straight body part 11 is collapsed, the container content Q is dropped by its own weight and the bridge phenomenon collapses.
Also, depending on the physical properties of the container contents Q, the air supply port 17A
When heating and exhausting cooling air from the air exhaust port 17B,
The contents Q of the container can be dissolved, solidified, and dried, which is convenient for discharging a semisolid oily substance such as lard.

In this embodiment, the elastic hopper membrane 14 is directed from the straight body portion 11 toward the discharge port 13 so as to be separated from the inner peripheral wall surface of the connecting corner portion P of the straight body portion 11 and the hopper portion 12. However, the present invention is not limited to these installation conditions as long as it can suppress the occurrence of residual adhesion and the occurrence of the bridge phenomenon in the container 10. For example, a configuration may be adopted in which the elastic hopper membrane 14 is simply hung down below the container 10 through which the contents Q of the container flow out so that the lower end is open.

Next, an example of the operation of the contents residual prevention device at the container discharge port according to the present invention will be described.
When the container content Q is put into the container, the elastic hopper film 14 having an elastic and repellant restoring action, which is interposed and installed from the straight body portion 11 toward the discharge port 13, causes the container content Q to fall under its own weight.
Since it is stretched along the shape of 0, the container content Q is easily and smoothly discharged from the discharge port 13 while avoiding a decrease in the input volume of the container 10. At this time, as the self-weight of the container contents Q on the elastic hopper membrane 14 decreases, the connecting angle between the straight body portion 11 and the hopper portion 12 is reduced by the contraction action of the elastic hopper membrane 14 to the conventional shape and the discharge flow action. The residual adhesion of the container contents Q on the inner peripheral wall surface of the portion P is prevented. That is, if adhesion occurs on the inner peripheral wall surface of the connecting corner portion P, the elastic hopper membrane 14 can be removed by the expansion and contraction action of the elastic hopper membrane 14 due to the intake and exhaust of air.

Further, the space S for allowing expansion and contraction of the elastic hopper membrane 14 formed between the elastic hopper membrane 14 and the inner peripheral wall surface of the connecting corner portion P of the straight body portion 11 and the hopper portion 12 is As the container contents Q introduced from the straight body portion 11 side of the elastic hopper membrane 14 collapses, the expansion / contraction movement is repeatedly performed to the inner peripheral wall surface side of the connecting corner portion P, whereby the bridging phenomenon (bridge phenomenon) is performed. ) Is destroyed and the contents Q of the container are fluidly fed to the discharge port 13 side and discharged.

At this time, the air suction / exhaust provided on the outer circumference of the hopper portion 12 for sucking or exhausting the elastic hopper membrane 14 and the space S between the straight body portion 11 and the inner peripheral wall surface of the connecting corner portion P of the hopper portion 12 are taken. The means 17 supplies air to the space S, and repeats pressurization and exhaust pressure, whereby the elastic hopper membrane 14 is pressed.
In the meantime, forced repetitive expansion and contraction movements are performed by the air pressure. Therefore, while the bridge phenomenon is gradually removed, the bridge phenomenon cannot be maintained due to the self-weight of the container contents Q when reaching the straight body part 11. Can be destroyed.

Next, to explain the advantage of the apparatus for preventing the contents remaining at the container discharge port according to the present invention, the container 10 will be described.
With respect to the elastic hopper membrane 14 that is detachable from the container, the container content Q can be naturally discharged by setting the inclination angle, so-called hopper angle, to be equal to or more than the repose angle of the object.
No wasted energy or special equipment is required to remove the bridging phenomenon. Further, it is possible to easily remove the adhesion residue of the container contents Q on the inner wall of the container and the bridge phenomenon. Further, the elastic hopper membrane 14 is formed into the shape of the container 10 while extending the container contents Q by its own weight. Since it follows, the volume can be reduced only slightly. For example, even if the bottom of the container and the hopper 12 are nearly horizontal, the elastic hopper membrane 14
When the load is reduced due to the resilient and repellant restoring action, the container restores to the set hopper shape, so that all the container contents Q can be discharged and the volume can be maximized.

Due to the discharge characteristic of the container content Q in the form of powder or granules, the container is quickly fluidized and discharged from the central portion of the container 10, and the container outer cylinder side is hard to flow. Therefore, the elastic hopper membrane 14 is used.
Wear is reduced. Further, according to the elastic hopper membrane 14 of the present invention, the conventional steel hopper portion that requires the split-joint in the field can be easily manufactured in the factory and installed in the field. For example, the existing container 10 can be used as it is, and the existing container 10 can be used as it is, and the residual adhesion can be prevented, so that the waste of resources can be prevented and the contents Q of the container, which is a product, can be prevented. There is no risk that defective products will be mixed in and deteriorate. Further, the on-site construction period is shortened, the equipment cost is lower than the conventional one, and the elastic hopper membrane 14 can be easily attached and replaced. Then, it becomes possible to selectively use the purpose of preventing residual adhesion and the purpose of preventing bridge phenomenon.
The elastic hopper membrane 14, the straight body portion 11 and the hopper portion 1
It is not necessary to impart airtightness to the space S provided between the inner peripheral wall surface of the connecting corner portion P and the elastic hopper membrane 14 which allows the expansion and contraction movement, and it is better to leave it open.

[0023]

The present invention is configured as described above.
Especially with existing containers, the hopper can be easily replaced at low equipment cost without changing the container volume.
Prevents residual adhesion of the container contents and cross-linking phenomenon (bridge phenomenon) to enable complete discharge of the container contents from the outlet.

[Brief description of drawings]

FIG. 1 is a partially longitudinal front view of a contents residual prevention device showing an embodiment according to the present invention.

FIG. 2 is a cross-sectional view of the vicinity of a hopper of the content residue prevention device according to the present invention.

FIG. 3 is a partially longitudinal front view of a content residue prevention device showing another embodiment according to the present invention.

FIG. 4 is a cross-sectional view of the vicinity of the hopper of the content residue prevention device.

FIG. 5 is a cross-sectional view of the vicinity of a hopper of a conventional content residue prevention device.

[Explanation of symbols]

 P ... Connection angle part Q ... Container content S ... Space part 10 ... Container 11 ... Straight body part 12 ... Hopper part 13 ... Discharge port 14 ... Elastic hopper membrane 17 ... Air suction / discharge means

Claims (6)

[Claims] 1. A container having a straight body part, a hopper part communicating with the straight body part, and a discharge port for discharging the contents of the container which is led out from the hopper part. An elastic body having an elastic and repellant restoring action against pressure expansion due to the weight of the content, which is installed so as to be separated from the inner peripheral wall surface of the connecting corner portion from the straight body portion toward the discharge port, and the straight body of the elastic body Flowing out the contents to the outlet side by the repeated expansion and contraction between the shape along the inner peripheral wall surface of the connecting corner and the shape that has been contracted and restored due to the collapse of the contents thrown in from the part side. A device for preventing contents from remaining at the container outlet. 2. The elastic body is an elastic hopper membrane having a small-diameter lower opening portion which gradually narrows as the hopper inclination angle is always greater than or equal to the repose angle of the contents. 2. The container according to claim 1, wherein the upper opening of the elastic hopper membrane is fixed to the inner peripheral wall surface of the straight body portion immediately above the hopper in an upper open state, and the lower opening is hung above the discharge port in the container in a contactless release state. Residual content prevention device at the outlet. 3. The elastic body has an upper opening fixed to the inner circumferential wall of the straight body immediately above the hopper in an open-up manner, and a lower opening fixed directly above the discharge port in the container. It is stretched and installed in a substantially frustoconical cylindrical shape between the discharge port and the expansion and contraction movement of the elastic body between the elastic body and the inner peripheral wall surface of the connecting corner portion of the straight body portion and the hopper portion. The content residual prevention device at the container outlet according to claim 1, wherein a space portion is formed. 4. An air suction / exhaust means for sucking or exhausting a space between the elastic body and the inner peripheral wall surface of the straight body portion and the connecting corner portion of the hopper portion is provided on the outer periphery of the hopper portion, and the elastic body is provided with 4. The device for preventing contents from remaining in a container outlet according to claim 3, wherein the device is repeatedly forced to expand and contract by air pressure. 5. An apparatus for preventing contents from remaining in a container outlet according to claim 4, wherein the air intake / exhaust means absorbs / exhausts the heating and cooling air for melting, solidifying and drying the contents. 6. An apparatus for preventing contents from remaining in a container discharge port, characterized in that an elastic hopper membrane is hung downward from the container to let the contents of the container flow out and open downward.