JPH11115920A - Opening apparatus for flexible container bag - Google Patents

Abstract

PROBLEM TO BE SOLVED: To cause powder particles to be separated from a gas flow and come against a wall to be captured for suppressing dust rising at the time of opening a bag by leading dropping powder to a side wall in a hopper by a distributor and stably acquiring a generated dust upward current into a hollow hood. SOLUTION: A hollow hood 2B is connected with an upper face of a hopper 2A. The hollow hood 2B comprises a longitudinal cylindrical outer wall 2B1 and a top plate 2B2 connected to its upper side in a horizontal state, a longitudinal cylindrical, inner wall 2B3 further connected to its inner periphery and a space 2B4. By placing a longitudinal cylinder 3A of a partition guide plate 3 to be positioned inside the space 2B4, an internal longitudinal flow path 2B41 and an external longitudinal flow path 2B42 for an upward current with dust are formed inside the space 2B4 to effectively remove dust from the dust upward current. In addition, a conical powder distributor 4 is placed below a center of the hollow hood 2B to stably guide the dust upward current into the hollow hood 2B.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for removing dust generated when a flexible container bag (hereinafter, referred to as a "flexible bag") of a powder material used in industries such as industry, agriculture and food is opened. The present invention relates to a flexible container bag unpacking device that can be suppressed by the above method.

[0002]

2. Description of the Related Art Heretofore, this type is as follows. 1. In the case of opening a bag such as a powder bag, conventionally, an operator opens the bag in a suspended state with a crane using a cutter, and the powder is dropped directly into a soil space or a hopper. 2. As an environmental measure and a labor-saving measure described above, a "flexible container bag opening machine" (Japanese Patent Laid-Open No. 6-32913)
5). B. A negative pressure is applied to the inside of the casing by blower suction to collect dust. A needle and an inclined knife are provided inside the casing, and the bag is opened by dropping the powder bag.

[0003]

The above-mentioned prior art has the following problems. 1. The work environment was degraded due to the soaring dust, and two people were required for cutting work using a crane and cutter. 2. In case of "flexible container bag opening machine",
Since both use power, there are problems such as high equipment costs and running costs, as well as high maintenance costs. The present invention has been made in view of such problems of the conventional technology, and has as its object to provide the following.
The present invention proposes a device that suppresses dust generated when powder is opened from a flexible container bag or the like by a method that does not use power.

[0004]

Means for Solving the Problems In order to achieve the above object, the present invention is as follows. 1. The dust generation mechanism when the powder is removed from the hopper is as follows. A. Primary scattering accompanied by crosswind etc. in the process of powder falling. It is roughly classified into secondary scattering generated when the falling powder collides with the inner wall of the hopper or the surface of the sediment in the hopper. In general, primary scattering does not cause much problem if it is indoors, but secondary scattering occurs regardless of indoors and outdoors,
Since the generation amount is larger than the primary scattering, how to suppress the secondary scattering is the point of preventing dust generation when the powder falls. The dust scattered outside the hopper as secondary scattering is due to the volume displacement of the falling powder inside the hopper and the dust accompanying the collision reversal flow on the deposit surface in the hopper. According to the present invention, the falling powder is guided to the inner wall of the hopper by the distribution device, and the generated dust rising airflow is stably taken into the hollow hood. Utilizes inertia and collision dust collection that are captured by collision with the vehicle. In addition, the dust flow inverted at the upper portion of the hollow hood has a uniform flow velocity distribution, and gravity dust collection utilizing natural sedimentation of particles is also added to enhance dust removal efficiency. 2. Cutting (Example 1) A flexible blade bag filled with powder is hung by a crane, a hoist or other appropriate means, and a plurality of pen-tip knives having different tip heights in a hopper are continuously arranged in a cross in a central blade. Then, the bottom of the flexible container bag is cut in four directions by its own weight to discharge the powder. 3. Cutting (Example 2) A flexible container bag or the like filled with powder is allowed to stand still in a bag receiver on a hollow hood. At this time, a plurality of knives provided below the bag receiver pierce the bottom surface of the flexible container bag. Thereafter, the knife is moved horizontally to cut the bottom of the flexible container bag and discharge the powder.

[0005] More specifically, it is as follows. That is, according to the present invention, the unpacking device casing 2
And a partitioning guide plate 3, a powder distributing device 4, and a first type bag cutting device 5,
Is composed of a hopper 2A and a hollow hood 2B continuously provided on the upper surface of the hopper, and the hollow hood 2B is a ring-shaped tubular member continuously connected to a vertical cylindrical outer wall 2B1 and an upper side in the vertical cylindrical outer wall. A top plate 2B2 and a vertical cylindrical inner wall 2B3 continuously provided on the inner periphery of the top plate 2B2 so as to reach a substantially central portion in the height direction of the vertical cylindrical outer wall are formed at an upper portion in the vertical cylindrical outer wall. The partition guide plate 3 is constituted by the space portion 2B4,
The vertical cylindrical portion 3A and the guide portion 3B connected to the lower side of the vertical cylindrical portion are constituted, and by positioning the vertical cylindrical portion 3A in the space portion 2B4, the dust whose upper end communicates with the space portion 2B4 is formed. Inner vertical channel 2B41 and outer vertical channel 2 of entrained updraft
B42 is configured, the powder dispensing device 4 is formed in a conical shape, and is disposed at a lower center position of the hollow hood 2B. A central cutting tool 5A is provided on the lower part and an outer cutting tool 5B is provided on the lower part. The central cutting tool 5A and the outer cutting tool 5B have a tip height of the nib. This is a flexible container bag unpacking device that is continuously arranged in a changing plane cross.

In this case, the following configuration can be adopted. First. The first-type bag cutting device 5 includes a central cutting tool 5 that is erected upward on an upper portion of a side surface of the powder distribution device 4.
A, and the outer blade 5B which is erected upward in the lower part, the central blade 5A is configured by continuously arranging the nib 5A1 in a plane cross with the vertex of the powder dispensing device as the center, The outer blade 5B has a pen point knife 5B1 connected to the outer side of the pen point knife 5A1 in the center blade 5A, and the center blade 5A is configured to be higher than the outer blade 5B. Second. Unpacking device casing 2 and partition guide plate 3
, A powder distributing device 4 and a second type bag cutting device 6, and the second type bag cutting device 6 is disposed in the hollow hood 2 </ b> B of the bag opening device casing 2, in front of and behind the powder distributing device 4. 6A in which the beam members are connected in a plane cross, and a central cutting tool 6B that is erected upward at the center of the upper surface of the beam 6A.
And an outer blade 6C that is raised upward adjacent to the center blade 6B on the upper surface of the beam 6A. The center blade 6B and the outer blade 6C change the height of the tip of the nib-shaped knife, and They are arranged continuously in a cross. Third. The second type bag cutting device 6 includes a beam 6A in which front, rear, left and right beams are connected in a cross in a hollow hood 2B of the bag opening device casing 2 on an upper portion of the powder distributing device 4, and a center of the upper surface of the beam 6A. A central cutting tool 6B standing upright,
The upper blade 6A is composed of an outer blade 6C standing upward and adjacent to the center blade 6B on the upper surface of the beam 6A.
Is constructed by continuously arranging a pen point knife 6B1 in a plane cross with the vertex of the powder dispensing device as a center.
The pen pointed knife 6C1 is connected to the outer side of the pen pointed knife 6B1 in the center blade 6B, and the center blade 6B is configured higher than the outer blade 6C. Fourth. Unpacking device casing 2 and partition guide plate 3
, A powder distributing device 4, and a third type bag cutting device 7, which is located on the upper surface of the hollow hood 2B in the unpacking device casing 2 and near the center of the bottom surface of the flexible container bag. It consists of a plurality of knives moving from the outer circumference. Fifth. The third type bag cutting device 7 includes a bag cutting device unit 7.
A and a bag receiver 7B.
A includes an upper vertical tube portion 7A1 continuously provided on the upper surface of the hollow hood 2B in the bag opening device casing 2, front and rear left and right rails 7A2 suspended in a plane cross in the upper vertical tube portion, and front, rear, left and right rails. A moving frame 7A3 fitted movably from the center to the outside along the center, and a knife 6A4 planted upward at the inner end of the upper surface of the moving frame, the bag receiver 7B has an upper vertical cylindrical portion. It is composed of a flat rectangular plate that projects inward at a predetermined position on the inner surface of 7A1 with a height slightly lower than the height of knife 7A4.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described based on embodiments with reference to the drawings. Reference numeral 1 denotes a flexible container bag unpacking device (hereinafter, referred to as a flexible container bag unpacking device) of the present invention, which is a bag opening device casing 2, a partitioning guide plate 3, a powder distribution device 4, a first type. It comprises a bag cutting device 5.

Reference numeral 11 denotes a flexible container bag opening apparatus according to another embodiment, which comprises a bag opening apparatus casing 2 and a partitioning guide plate 3.
, A powder distribution device 4 and a second type bag cutting device 6.

Reference numeral 12 denotes a flexible container bag opening apparatus according to another embodiment, which comprises a bag opening apparatus casing 2 and a partitioning guide plate 3.
, A powder distribution device 4 and a third type bag cutting device 7.

The unpacking device casing 2 includes a hopper 2A.
And a hollow hood 2B continuously provided on the upper surface of the hopper. The hollow hood 2B is a vertical cylindrical outer wall 2B1 and a ring-shaped top plate 2B continuously provided horizontally on an upper side in the vertical cylindrical outer wall.
2 and a space formed in an upper part in the vertical cylindrical outer wall by a vertical cylindrical inner wall 2B3 continuously provided on the inner periphery of the top plate 2B2 so as to reach a substantially central portion in the height direction of the vertical cylindrical outer wall. 2B4.

The middle partition guide plate 3 is composed of a vertical cylindrical portion 3A and a guide portion 3B provided continuously on the lower side of the vertical cylindrical portion, and by positioning the vertical cylindrical portion 3A in the space portion 2B4, the space portion is formed. An inner vertical flow path 2B41 and an outer vertical flow path 2B42 of an ascending airflow accompanied by dust, the upper ends of which communicate with each other, are formed inside 2B4.

The powder distributing device 4 is formed in a conical shape, and is disposed at a lower central portion of the hollow hood 2B. 4A
Is a connecting rod for connecting and supporting the powder distribution device to the hopper 2A.

The first type bag cutting device 5 is composed of a central cutting tool 5A standing upright on an upper portion of a side surface of the powder distribution device 4, and an outer cutting tool 5B standing upright on a lower portion. , The central knife 5A is a nib 5
A1 is continuously arranged in a plane cross with the vertex of the powder dispensing device as a center.
B1 is connected to the outer side of the pen point knife 5A1 in the center blade 5A, and the center blade 5A is configured higher than the outer blade 5B.

The second type bag cutting device 6 includes a beam 6A in which front, rear, left and right beams are connected in a plane cross in the hollow hood 2B of the bag opening device casing 2 above the powder distribution device 4, and a beam 6A.
Cutting tool 6 erected upward at the center on the upper surface of the
B and an outer blade 6C that is raised upward adjacent to the center blade 6B on the upper surface of the beam 6A. The center blade 6B is formed by placing the nib 6B1 in a plane centering on the vertex of the powder dispensing device. The outer blade 6C is configured so as to be continuously arranged in a cross shape. The outer blade 6C has a pen pointed knife 6C1 connected to the outer side of the pen pointed knife 6B1 of the central blade 6B, and the central blade 6B is higher than the outer blade 6C. Have been.

The third type of bag cutting device 7 comprises a bag cutting device section 7A and a bag receiver 7B. The bag cutting device 7A includes an upper vertical cylinder 7A1 connected to the upper surface of the hollow hood 2B of the unpacking device casing 2 and front, rear, left and right rails 7 suspended in a plane cross in the upper vertical cylinder.
A2, a moving frame 7A3 fitted movably from the center to the outside along the front, rear, left and right rails, and a knife 7A4 planted upward at the inner end of the upper surface of the moving frame. . The bag receiver 7B is formed of a flat rectangular small plate that projects inward at a predetermined position on the inner surface of the upper vertical cylindrical portion 7A1 with a height slightly lower than the height of the knife 7A4. In addition, the movable structure of the moving frame 7A3 is as follows.
It is as follows. A frame 7A5 extending on the outer peripheral surface of the upper vertical cylindrical portion 7A1 in the direction in which the moving frame 7A3 extends, and a hydraulic cylinder 7A6 disposed on this frame are connected to the outer end of the moving frame. .

[0016]

[Examples] 1. The powder discharged from the flexible container bag 8 falls along the inclined surface of the powder distribution device 4 and accumulates on the hopper 2A. Here, the role of the powder distribution device 4 is to uniformly distribute the falling powder over the entire circumference of the hopper, stabilize the dust rising airflow 9 generated on the inner wall side surface of the hopper 2A, and reduce the dust flow 9 at the upper portion of the hollow hood 2B
It is to lead inside. 2. The hollow hood 2B is a room for taking in the bulk of the dust rising airflow, and suppresses dust from directly scattering outside the system (atmosphere). The inside of the hollow hood 2B is a partition guide plate 3
Thus, the inner vertical flow path 2B41 and the outer vertical flow path 2B42 of the ascending airflow accompanied with the dust are configured to effectively remove dust from the dust ascending airflow taken into the hollow hood 2B. is there. That is, the dust flow guided between the partition guide plate 3 and the outer wall of the hollow hood 2B collides with the side wall of the hollow hood and the partition guide plate or is turned, and the dust is separated from the air flow by inertia. To remove dust. In addition, the dust air flow inverted at the upper portion in the hollow hood has a uniform flow velocity distribution and is decelerated, and the dust collection performance is improved due to the gravitational dust collection of the dust.

3. The first-type bag cutting device 5 includes a central blade 5A and an outer blade 5B, and the central blade 5A is configured by arranging a nib 5A1 continuously in a plane cross with a vertex of the powder dispensing device as a center. The outer blade 5B has the pen point knife 5B1 connected to the outer side of the pen point knife 5A1 in the center blade 5A, and the center blade 5A is configured higher than the outer blade 5B for the following reason. . A. Since the pen point knife, the bottom of the flexible container bag can be easily cut. In other words, the bottom surface of the flexible container bag can be instantaneously cut by the dynamic load or free weight of the flexible container bag by free fall. B. Since the center blade 5A is higher than the outer blade 5B, the surface pressure during cutting can be maximized. C. By continuously arranging the outer blades and the like, the bag opening range can be enlarged and the powder can be easily discharged. D. As a result, the area occupied by the installation can be reduced by downsizing the apparatus, the maintenance can be facilitated, and the time required for cutting and discharging can be shortened.

The second type bag cutting device 6 is provided with the above-described first type bag cutting device.
The same operation as that of the seed bag cutting device 5 is performed, but the beam 6
Since the center blade 6B and the outer blade 6C are configured to be directly supported on the upper surface of A, the strength can be improved.

4. The bag cutting device portion 7A of the third type bag cutting device 7 includes a moving frame 7A3 provided in the hollow hood 2B of the unpacking device casing 2 and movably fitted outward from a center thereof, and an upper surface of the moving frame. Since it is composed of a knife 7A4 planted upward at one end,
Insert a knife near the center of the bottom of the flexible container bag,
The powder is discharged to the hopper by horizontally moving and cutting the flexible container bag. A. The plurality of moving knives can increase the powder discharging speed and minimize the amount of powder remaining in the flexible container bag. B. Further, by making the knife a cartridge type by screwing or the like, it is possible to easily replace the blade with wear or the bag material. C. As a result, it is possible to cut even a relatively hard lump or a powder having a low density.

[5] With reference to FIG.
Will be described. A. Upper vertical tubular portion 10 continuously provided on the upper surface of hollow hood 2B
A and a bag receiving stand 10B are disposed in the upper vertical cylindrical portion so as to maintain the horizontal force and support the weight of the flexible container bag, for example, while energizing by an electromagnetic magnet method. In this case, about three bag receiving stands 10B are installed in the circumferential direction of the hollow hood. B. The flexible container bag filled with the powder is suspended by a crane or the like and is stopped on the bag receiving stand 10B. C. The crane's hanging wire is loosened to a length greater than the falling distance of the flexible container bag. D. The electromagnetic force of the bag receiving base 10B is released (OFF) by the ON / OFF switch, and the flexible container bag falls onto the first type bag cutting device 5 by gravity drop. E. FIG. When the crane is hoisted and the flexible bag reaches a certain distance on the first type bag cutting device 5, the hoisting operation of the crane is temporarily stopped and the powder in the flexible container bag is discharged into the hopper. F. The above is an example of a countermeasure when the material of the flexible container bag is difficult to cut. For example, if the bottom of the flexible container bag is easy to cut, such as a single cloth type,
Cutting can be performed only by the crane's descending speed or the weight of the flexible container bag. In such a case, it is also possible to fix the core bag at a predetermined position and move the cutting blade up and down for cutting.

[0021]

Since the present invention is configured as described above, the following effects can be obtained. In the opening operation of the flexible container bag, a clean working environment can be secured without generating dust pollution. In addition, since the power of a dust collecting blower or the like is not used, the size of the apparatus can be reduced, and the cost of the equipment and the running cost are very low. Further, the structure is simplified, maintenance is easy, labor is not required, and labor can be saved.

[Brief description of the drawings]

FIG. 1 is a conceptual diagram of the present invention.

FIG. 2 is a schematic perspective view in which a part of the above is cut away.

FIG. 3 is a conceptual diagram of another embodiment.

FIG. 4 is a schematic perspective view in which a part of the above is cut away.

FIG. 5 is a conceptual diagram of another embodiment.

FIG. 6 is a schematic perspective view in which a part of the above is cut away.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 flexible container bag unpacking device 2 unpacking device casing 3 intermediate partition guide plate 4 powder dispensing device 5 type 1 bag cutting device 11 flexible container bag unpacking device 6 type 2 bag cutting device 12 flexible container bag unpacking device 7 Type 3 bag cutting device 8 Flexible container bag 9 Dust rising airflow

Claims (6)

[Claims] An unpacking device casing (2), a partitioning guide plate (3), a powder distribution device (4), and a first type bag cutting device (5). 2) is composed of a hopper (2A) and a hollow hood (2B) connected to the upper surface of the hopper, and the hollow hood (2B) has a vertical cylindrical outer wall (2B1) and an upper side in the vertical cylindrical outer wall. A horizontal top plate (2B2) connected in a horizontal state to a vertical cylindrical inner wall (2B2) connected to the inner periphery of the top plate (2B2) so as to reach a substantially central portion in the height direction of the vertical cylindrical outer wall (2B2). 2B3), a space portion (2B) formed in an upper portion inside the vertical cylindrical outer wall.
4), the partitioning guide plate (3) is composed of a vertical cylindrical portion (3A) and a guide portion (3B) connected to the lower side of the vertical cylindrical portion.
And by positioning the vertical cylindrical portion (3A) in the space portion (2B4), the inner vertical flow path (2B4) of the ascending airflow accompanied by dust whose upper end communicates with the space portion (2B4).
1) and an outer vertical channel (2B42) are formed, and the powder distributing device (4) is formed in a conical shape and disposed at the lower center of the hollow hood (2B). The cutting device (5) is composed of a central cutting tool (5A) standing upright on an upper portion of the side surface of the powder distribution device (4) and an outer cutting tool (5B) standing upright on a lower portion. The central container (5A) and the outer blade (5B) are continuously arranged in a plane cross by changing the height of the tip of a nib-shaped knife. 2. A first-type bag cutting device (5) includes a central cutting tool (5A) that is erected upward on an upper portion of a side surface of the powder distributing device (4), and is erected upward on a lower portion. Outer blade (5B), and the center blade (5
A) is configured by continuously arranging a nib-shaped knife (5A1) in a plane cross with the vertex of the powder dispensing device as a center, and the outer knife (5B) is configured such that the nib-shaped knife (5B1) is a central knife (5B1). 2. The flexible container bag unpacking device according to claim 1, wherein the central knife (5 </ b> A) is higher than the outer knife (5 </ b> B). 5. 3. A second type bag cutting device comprising a bag opening device casing (2), a partition guide plate (3), a powder distribution device (4), and a second type bag cutting device (6). The device (6) is provided with a hollow hood (2) of a bag opening device casing (2).
B) A beam (6A) in which front, rear, left and right beams are connected in a plane cross at the upper part of the powder distributing device (4), and a central cutting tool (6B) rising upward at the center of the upper surface of the beam (6A). )
And an outer blade (6C) standing upward on the upper surface of the beam (6A) adjacent to the center blade (6B). The center blade (6B) and the outer blade (6C) are pen-shaped. The flexible container bag unpacking device according to claim 1, wherein the tip height of the pointed knife is changed and the tip is continuously arranged in a plane cross. 4. A second-type bag cutting device (6) includes a hollow hood (2B) of an unpacking device casing (2), and a front, rear, left and right beam body formed in a plane cross on an upper part of a powder distribution device (4). A connected beam (6A), a central blade (6B) raised upward at the center of the upper surface of the beam (6A), and an upward raised edge adjacent to the central blade (6B) on the upper surface of the beam (6A). Outer cutter (6C), and a central cutter (6C).
B) is configured by continuously arranging a nib-shaped knife (6B1) in a plane cross with the vertex of the powder dispensing device as a center, and the outer blade (6C) is configured such that the nib-shaped knife (6C1) is a central blade (6C1). 4. The flexible container bag unpacking device according to claim 3, wherein the central blade (6 </ b> B) is higher than the outer blade (6 </ b> C), being connected to the outer side of the nib-shaped knife (6 </ b> B <b> 1) in 6 </ b> B). 5. A bag dismantling device casing (2), a partition guide plate (3), a powder dispensing device (4), and a type 3 bag cutting device (7), and a type 3 bag cutting. The flexible container according to claim 1, wherein the device (7) comprises a plurality of knives which move on the upper surface of the hollow hood (2B) in the bag opening device casing (2) from the vicinity of the center of the bottom surface of the flexible container bag toward the outer peripheral direction. Bag unpacking device. 6. The third type bag cutting device (7) comprises a bag cutting device portion (7A) and a bag receiver (7B), and the bag cutting device portion (7A) is provided in a bag opening device casing (2). An upper vertical tube portion (7A1) connected to the upper surface of the hollow hood (2B), front and rear left and right rails (7A2) suspended in a plane cross in the upper vertical tube portion, and a center along the front, rear, left and right rails. Frame (7A3), which is movably fitted outwardly from the front, and a knife (7A4), which is planted upward at the inner end of the upper surface of the movable frame, and the bag receiver (7B) 6. The flexible container bag according to claim 5, wherein the flexible container bag is formed of a flat rectangular plate protruding inward at a predetermined position on the inner surface of the vertical cylindrical portion (7A1) at a height slightly lower than the height of the knife (7A4). Unpacking device.