JP4339264B2 - Lifting chute - Google Patents

Description

  The present invention relates to an elevating chute that is used when filling a bag of contents such as powder from above, and in particular, a part of the granular material is caught or caught in the expansion joint part of the elevating chute. It is related with the raising / lowering chute which prevents the expansion joint part from remaining.

  When filling a bag of contents such as powder or the like from above, an elevating chute is used in order to avoid a part of the contents such as powder or the like from being scattered around. For example, as shown in FIGS. 3 (A) and 3 (B), the conventional lifting chute has a cylindrical communication pipe 51 having a cylindrical communication pipe 51 and a taper-shaped product input part having an upper part and an opening part on the upper part. The elevating / discharging pipe 52, which is covered with the communication pipe on the lower side of the product input portion, and moves up and down, and the bellows provided between the upper part of the elevating / discharging pipe 52 and the upper end side of the communication pipe 51, which is covered with the communication pipe 51. The type expansion joint part 53 is comprised.

However, in the lifting chute provided with the bellows type expansion joint part, the lifting chute raises the lifting discharge pipe according to the filling degree of the contents, and the bellows type expansion joint part is contracted in conjunction with this. Therefore, there is a problem that a recess appears in the bellows part in the process of contraction, and a part of the granular material of the contents is caught or pinched in the recess part and remains.
In addition, when the next contents are filled using the lifting chute without cleaning the powder particles remaining in the recessed portion of the bellows part, the lifting chute is moved up and down according to the filling degree of the contents as described above. The bellows type expansion joint part is also a mechanism that shrinks in conjunction with this, so when filling the contents, the lifting / lowering discharge pipe is lowered to the lowest position and the bellows type expansion joint part is also linked to this. Distract. At this time, the granular material remaining in the concave portion of the bellows portion of the bellows type expansion joint part falls off due to the disappearance of the concave portion due to distraction, and is scattered around the lifting chute and soils the periphery. There was a problem.
Furthermore, when removing the bellows type expansion joint part for cleaning, the lower end part of the communication pipe built in the bellows type expansion joint part is attached in a state where it partially overlaps the upper end part of the lifting / lowering discharge pipe. Therefore, it is necessary to disassemble the lifting chute without removing the communication pipe and the lifting discharge pipe of the lifting chute.

  The present invention has been devised in view of the problems as described above, and has been devised to solve the problems. The purpose of the present invention is that a part of the granular material or the like is caught on the expansion joint part of the lifting chute. An object of the present invention is to provide an elevating chute that can prevent pinching and remain and can easily clean an expansion joint.

In order to achieve the above object, the present invention is provided with an input portion having a tapered input cylinder having a cylindrical flow pipe at the lower portion and expanding upward at the upper portion and having a content input port on the upper surface. The lower and upper discharge parts are provided with a tapered flow cylinder having a cylindrical discharge pipe at the lower part and expanding upward at the upper part and having a content distribution port on the upper surface. The contents distribution port of the lifting / discharging part is provided so as to be able to move up and down between a highest position to be partially inserted into the inside of the lifting / discharging part through the contents distribution port and a lowering position below the lower end of the flow pipe. A taper-like flexible sheet surrounding the entire periphery of the inlet portion and the outer periphery of the outer surface of the flow pipe at the predetermined position is provided at the highest and lowest positions of the lifting / lowering discharge portion. provided sex sheet tensioned state of the upside down, the elevator discharge portion Those consisting inserted unit in the interior of the flexible sheet taut in a tapered shape expanding downward the flow pipe of the insertion portion at the lowermost position.

  As is clear from the above description, according to the lifting chute according to the present invention, since the flexible sheet is provided in the upside down state at the uppermost position and the lowermost position of the lifting discharge part, the expansion joint part In the flexible sheet that performs the same function as that of the bellows type expansion joint part, it prevents the recesses from appearing on the inner peripheral side at the highest rise position of the lifting and lowering discharge part, and some of the powder particles are caught or pinched Or the like can be prevented from remaining. For this reason, even if the raising / lowering discharging part is lowered to the lowest position, the remaining powder particles like the bellows-type expansion joint part do not fall off and scatter around the raising / lowering chute to contaminate the surroundings. Moreover, the elevating / discharging part is at the lowest position and the upper end is located below the lower end of the flow pipe of the charging part, and a gap is formed between the upper end of the elevating / discharging part and the lower end of the charging part. The flexible sheet can be removed and attached using the, so that the flexible sheet that performs the same function as the expansion joint can be easily cleaned without disassembling the lifting chute, etc. It has a new beneficial effect.

Hereinafter, the present invention will be described more specifically based on the best mode for carrying out the invention described in the drawings.
Here, FIG. 1 is a schematic side view of the lowest descending position of the lifting chute, and FIG. 2 is a schematic side view of the highest rising position of the lifting chute.

  In the figure, the lifting chute 1 prevents a part of the contents, such as powder particles, from being caught or caught in the expansion joint portion of the lifting chute 1 and makes the expansion joint portion easy to clean. And a raising / lowering discharge part 3 consisting of a lower flow pipe 21 and an upper tapered flow cylinder 22, and a vertically movable discharge part 3 consisting of a lower discharge pipe 31 and an upper taper flow cylinder 32. The taper-shaped flexible sheet 4 fulfills the same function as the expansion joint.

  The charging unit 2 is provided with a cylindrical flow pipe 21 at the lower part and is expanded upward at the upper part at the part where the contents, for example, powder particles are charged into the bag a. And it is comprised from the structure provided with the taper-shaped injection | throwing-in cylinder 22 which has the content input port 22a on the upper surface. The input unit 2 is supported by a machine frame (not shown) constituting a part of the lifting chute 1.

  The flow pipe 21 is composed of, for example, a cylindrical pipe, and its upper end is joined to the lower end of the tapered charging cylinder 22. The distribution pipe 21 is located between the tapered charging cylinder 22 and the lower lifting / lowering discharge section 3 and functions as a passage for feeding the charged contents to the lifting / lowering discharge section 3. The contents pass through the distribution pipe 21. Then, it flows into the lower elevation discharge unit 3.

  The tapered charging cylinder 22 is formed in, for example, a reverse truncated cone shape or a truncated pyramid shape, and a content charging port 22a having the widest diameter is formed on the upper surface thereof, so that the charged material can be easily charged. It has a structure. The contents input from the content input port 22 a are collected at the center lower part along the inclination of the inner surface of the tapered input cylinder 22 and discharged into the flow pipe 21.

  The raising / lowering discharge part 3 fulfill | performs the function which inputs and discharges the content directly in a bag, when putting the granular material of the content into the bag a, for example, It equips the lower part with the cylindrical discharge pipe 31, In addition, the upper part is constructed of a structure provided with a tapered flow cylindrical body 32 having an upwardly expanding surface and a content flow opening 32a on the upper surface. The raising / lowering discharge part 3 is connected with the raising / lowering apparatus which is not shown in figure which comprises a part of raising / lowering chute 1, and has a structure raised / lowered by raising / lowering of an raising / lowering apparatus.

  The discharge pipe 31 is composed of, for example, a cylindrical pipe, and the upper end thereof is joined to the lower end of the tapered flow cylindrical body 32. The discharge pipe 31 functions as a passage for directly entering the contents sent through the tapered flow cylinder 32 into the bag, and the contents flow into the bag through the discharge pipe 31. The discharge pipe 31 has a larger inner diameter than the outer diameter of the flow pipe 21, so that the flow pipe 21 can be partially inserted into the discharge pipe 31.

  The tapered circulation cylinder 32 is formed, for example, in the shape of a reverse truncated cone or truncated pyramid similar to the tapered insertion cylinder 22 described above, and the content circulation opening 32a having the widest diameter on the upper surface thereof. Is formed. The contents flowing down the flow pipe 21 are collected at the center lower part along the inclination of the inner surface of the tapered flow cylinder 32 and discharged into the discharge pipe 31.

  The inner diameter of the tapered circulation cylinder 32 is slightly larger than the outer diameter of the tapered charging cylinder 22, and the tapered distribution cylinder 32 has a distribution pipe 32 a through the contents distribution port 32 a on the inner side thereof. 21 and most of the tapered charging cylinder 22 can be inserted.

  The lifting / lowering discharge section 3 having a discharge pipe 31 in the lower portion and a tapered flow cylindrical body 32 in the upper portion is provided on the inner side of the lift / discharge section 3 on the lower side of the loading portion 2 through the content flow port 32a. It has a structure that moves up and down between the highest position where it is partially inserted and the lowest position that is lower than the lower end of the flow pipe 21.

  The flexible sheet 4 surrounds the entire periphery of the contents distribution port 32a of the lifting / lowering discharge part 3 and the entire periphery of the outer surface of the flow pipe 21 of the input part 2 into the bag, and enters the bag. Sometimes it functions to prevent some of the contents from splashing outside and polluting the surroundings. This flexible sheet 4 fulfills the same function as the bellows type expansion joint.

  The flexible sheet 4 is detachably connected to a predetermined position on the outer side surface of the flow pipe 21 in the lowermost position of the lifting / lowering discharge unit 3, in the drawing, to the entire circumference of the upper end of the flow pipe 21, and the lower end is the content. It is detachably connected to the entire periphery of the product distribution port 32a, is in a stretched state, and has a tapered shape that expands downward.

  The tapered flexible sheet 4 is in the opposite direction to the above at the highest rise position of the lifting / lowering discharge unit 3. That is, the upper end portion of the lifting / lowering discharge section 3 is the lower end portion at the highest rise position, and the lower end portion of the lifting / lowering discharge section 3 is the upper end portion at the highest rise position. It becomes a tension state. That is, the flexible sheet 4 is stretched upside down between the highest and lowest positions of the lifting and lowering discharger.

  In addition, the tapered flexible sheet 4 is stretched between the outside of the loading portion 2 and the inside of the tapered loading cylinder 22 of the lifting / lowering discharge portion 3 at the highest rise position of the lifting / lowering discharge portion 3. Further, the contents are prevented from being caught or caught on the inner peripheral side surface of the flexible sheet 4.

Next, the operation based on the configuration of the best mode for carrying out the invention will be described below.
When filling the bag a with, for example, powdered contents of the contents using the lifting chute 1, the upper end of the bag a whose upper end is opened by a clamping device (not shown) at the lowest lifting position of the lifting discharge part 3 of the lifting chute 1. The elevating / lowering discharge unit 3 is raised to the highest position in order to be inserted and mounted in the interior of the bag and to fill the bag a with the contents.

  For example, the granular material of the content is charged into the content charging port 22 a on the upper surface of the charging portion 2 of the lifting chute 1. The charged contents are collected at the center lower part along the inclination of the inner peripheral side surface of the tapered charging cylinder 22, flow into the flow pipe 21 from the center lower part, flow down through the flow pipe 21, and flow pipe 21. Flows into the tapered flow cylinder 32 from the lower content flow port 32a.

  A part of the contents tends to scatter to the periphery when flowing into the tapered flow cylindrical body 32 from the lower end of the flow pipe 21, but in the periphery, the flexibility in a state of being stretched in a taper shape is formed. Since the sheet 4 is provided, the flexible sheet 4 is prevented from being scattered around.

  The contents flowing into the inside of the tapered flow cylindrical body 32 are collected at the center lower part along the inclination of the inner peripheral side surface of the tapered flow cylindrical body 32, flow into the discharge pipe 31 from the lower center part, and the discharge pipe 31. It flows down and flows into the bag a from the lower end of the discharge pipe 31. As the contents flow into the bag a, the elevating / discharging unit 3 rises from the lowest position.

  As the elevating / lowering discharge unit 3 rises, the flexible sheet 4 in a tapered state that expands downward starts to bend gradually. Since the flexible sheet 4 that starts to bend does not have a recess formed on the inner peripheral side like the bellows-type expansion joint, a part of the contents is caught or pinched on the inner peripheral side of the flexible sheet 4. There is nothing.

  The lifting / lowering discharge unit 3 that has risen in conjunction with the filling rate of the contents into the bag reaches the highest position when the contents are filled in the bag, and the filling of the contents into the bag is also completed. To do. At the highest rise position of the lifting / lowering discharge unit 3, the taper-shaped injection cylinder 22 is mostly inserted into the inside of the raised tapered circulation cylinder 32.

  At this time, the flexible sheet 4 is stretched in a taper shape that expands in the opposite direction to the lowest position, that is, upward. Since the flexible sheet 4 is in a stretched state, a recess is not formed on the inner peripheral side like the bellows type expansion joint, and a part of the contents is caught on the inner peripheral side of the flexible sheet 4. It wo n’t get caught.

  Further, the lifting / lowering discharge unit 3 is located at the lowest position, and the upper end of the lifting / lowering discharge unit 3 is positioned below the lower end of the flow pipe 21 of the charging unit 2. Since a gap is formed between the lower end and the flexible sheet 4 can be removed and attached using this gap, the flexibility that performs the same function as the expansion joint without disassembling the lifting chute 1 is provided. The cleaning operation of the sheet 4 can be performed.

  Note that the present invention is not limited to the best mode for carrying out the invention, and various modifications can be made without departing from the spirit of the invention.

It is a schematic side view of the lowest descending position of the raising / lowering chute | shoot which shows the best form for implementing this invention. It is a schematic side view of the highest rising position of the raising / lowering chute | shoot which shows the best form for implementing this invention. (A) is a schematic side view of the raising position of the conventional lifting chute. (B) is a schematic side view of the lowered position of the conventional lifting chute.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Lifting chute 2 Input part 21 Flow pipe 22 Taper-shaped injection cylinder 22a Contents inlet 3 Lifting discharge part 31 Discharge pipe 32 Tapered distribution cylinder 32a Contents distribution port 4 Flexible sheet a Bag

Claims (1)

A lower part is provided with a cylindrical flow pipe, and an upper part of the upper part is provided with a taper-like injection cylinder having a content input port on the upper part, and a lower part is provided with a cylindrical discharge pipe. An elevating / discharging part having a taper-shaped distribution cylinder having a content distribution port on the upper surface that is expanded upward is provided on the lower side of the input part, and the input part is placed inside the elevating / discharging part through the content distribution port. It is provided so as to be able to move up and down between the highest position where it is partially inserted and the lowest position that is lower than the lower end of the flow pipe, and the entire peripheral edge of the content flow port of the lift and discharge section and the outer surface of the flow pipe of the input section Providing a tapered flexible sheet that surrounds the entire circumference of the predetermined position, and providing the flexible sheet in a tensioned state upside down at the highest and lowest positions of the lifting and lowering discharger , The flow pipe of the charging part is directed downward at the lowest position of the lifting / lowering part Elevating chute, characterized in that inserted into the interior of the flexible sheet taut in a tapered shape expanding.

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