JP2014144781A - Structure of material supplying hopper - Google Patents

Abstract

PROBLEM TO BE SOLVED: Conventionally, in a quantitative feeder for granular material, when a hopper for increasing is attached and connected to an upper surface opening of a storage portion for storing a target material, and the target material is filled therewith, the weight pressure However, there is no technique for solving the problem that the fluidity is changed by this and the supply of high accuracy is impaired.
SOLUTION: A material increasing hopper is attached to an upper surface opening of a material storage portion in a powder quantitative feeder, and a diameter smaller than a discharge opening of the increasing hopper is provided between the increasing hopper and the storage portion. An inner pipe having a bent portion is interposed, and the inner pipe is configured in a funnel shape, has a flange on the upper opening edge, is supported by the material storage portion by the flange, and is located above the material storage portion. To be inserted.
[Selection] Figure 1

Description

  The present invention relates to a material supply hopper structure, and in particular, in a powder quantitative feeder device, an increase hopper is attached to an upper surface opening of a storage unit (standard hopper) for storing a target material prior to conveyance. The present invention relates to a material supply hopper structure implemented when the supply amount is increased.

  Conventionally, the target granular material is introduced from the upper opening of the storage portion, and the target granular material is conveyed by a driving unit disposed below the storage portion, and the target container is discharged from the discharge chute. The existence of a quantitative feeder device that discharges to a table, and also a table feeder device is known.

  However, in such a quantitative feeder device, when it is desired to process an amount of object material that exceeds the capacity allowed by the storage unit, an increase hopper is attached to the upper surface opening of the storage unit, and the increase hopper Inputting the object material is performed. For example, when the capacity of the storage unit is about 600 cc, the capacity of the increase hopper is assumed to be about 3000 to 6000 cc.

  When the material for the increase is filled into the object material, the pressure due to the material increases, which adversely affects the strength of the components of the drive unit below the storage unit, such as the carry-out blades. When the material is a material with good fluidity, the flow is changed, the supply amount is changed, and the supply accuracy is deteriorated.

  Although the applicant investigated the prior technical documents related to the present invention, the applicant could not find any documents that seemed to be related to the present invention.

  The problem to be solved by the present invention is a conventional powder feeder for quantitative measurement, in which an increase hopper is attached to an upper surface opening of a storage portion for storing a target material, and the target material is provided there. Is filled with the weight pressure, the fluidity is changed by the weight pressure, and there is no technique for eliminating the loss of accurate supply.

  In order to solve the above-described problems, the material supply hopper structure according to the present invention has a material increasing hopper attached to the upper surface opening of the material storing portion in the powder quantitative feeder device, and the increasing hopper and the storing portion. It is characterized in that an inner pipe having a portion smaller than the discharge port diameter of the increasing hopper is interposed therebetween.

  Further, in the material supply hopper structure according to the present invention, the inner pipe described above is configured in a funnel shape, has a flange on the upper opening edge, is supported by the material storage part by the flange, and is inserted into the upper part of the material storage part. It is characterized by that.

  The material supply hopper structure according to the present invention is configured as described above. The pressure of the target material is dispersed by interposing an inner pipe having a diameter smaller than the discharge port of the increase hopper between the existing storage unit and the increase hopper, and the pressure is reduced and supplied. The accuracy is improved and the load on the drive part is reduced. In particular, when the inner pipe is inserted into the upper part of the storage part, a gap is generated between the upper surface of the storage part and the tip of the inner pipe, and the pressure can be further reduced and the pressure is kept constant. can do. Further, the hopper level is kept constant under the inner pipe, and the supply accuracy of the object material can be maintained.

It is a schematic diagram showing the structure of the present invention. It is a figure which shows the supply state of material. It is a figure at the time of providing a taper guide in a storage part. It is a perspective view which shows an example of an inner pipe | tube.

  This was realized by configuring as illustrated in the drawings and described in the examples.

  Next, an example of a preferred embodiment of the present invention will be described with reference to the drawings. In the figure, reference numeral 1 denotes an object material storage unit (standard hopper) in an existing powder feeder. A drive unit is provided below the storage unit 1, and in particular, a rotating supply blade that feeds the material in the storage unit 1 to the rotating supply board, which continues as a conveyance system, is provided. The above-mentioned supply board is formed with a measuring groove for receiving a certain amount of powder particles radially from the center. Details of this mechanism mechanism are disclosed in Japanese Patent No. 5158842 to which the present applicant has rights.

  In the figure, reference numeral 2 denotes an increasing hopper which is attached by abutting and connecting the lower flange 2a to the flange 1a of the upper opening of the storing portion 1, and is stored by attaching this increasing hopper 2. It is possible to set the amount of the object material A that is larger than that allowed by the unit 1 to the quantitative feeder device at a time.

  In the present embodiment, the inner pipe 3 is interposed between the increasing hopper 2 and the storage portion 1 described above. In this example, the inner tube 3 has a funnel shape, and has a tapered portion whose diameter gradually decreases downward, and a discharge narrow diameter portion formed at the tip of the tapered portion. .

  The inner pipe 3 is formed with a flange 3a at the upper opening edge. As an embodiment, the flange 3a is sandwiched and supported between the flange 1a of the storage portion 1 and the flange 2a of the increasing hopper 2. As a result, the main body of the inner tube 3 is inserted into the inside from the upper surface opening of the storage unit 1.

  When the object material A falls under its own weight from the increasing hopper 1 with the inner tube 3 inserted into the upper part of the storage unit 1, the inner tube 3 is inserted into the upper part of the storage unit 1. The gap 4 is generated in the part.

  The use of the inner pipe 3 can also be applied to a configuration in which the taper guide 5 is formed in the storage portion 1 to restrict the flow of the object material A and prevent diffusion. The hopper level at can be made constant.

  The material supply hopper structure according to the present application is configured as described above. In this embodiment, the inner tube 3 is funnel-shaped, but is not limited to this, and a portion having a smaller diameter than the discharge port of the increasing hopper 2 is formed in a part of the inner tube, It may be anything that restricts the flow down, and may be a simple straight tube or an hourglass-like shape with a sway in the middle. With such a configuration, it is only necessary to reduce the pressure due to the weight of the object material A in the storage unit 1. In addition, by freely adopting the length of the discharge port in the inner pipe 3, the flow of the object material can be further restricted, the amount flowing into the storage part 1 can be restricted, and the hopper level can be kept constant. Can do.

DESCRIPTION OF SYMBOLS 1 Storage part 1a Flange 2 Increase hopper 2a Flange 3 Inner pipe 3a Flange 4 Space | gap 5 Taper guide

Claims (2)

  A hopper for increasing the amount of material is attached to the upper surface opening of the material container in the quantitative feeder for the granular material, and the portion between the hopper for increasing material and the outlet is smaller than the discharge port diameter of the filler for increasing amount. A material supply hopper structure characterized by interposing an inner pipe.   2. The above-described inner pipe is formed in a funnel shape, has a flange on the upper opening edge, is supported by the material storage portion by the flange, and is inserted into the upper portion of the material storage portion. Material supply hopper structure.

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