JP2013159474A - Fixed volume feeder device for granular powder - Google Patents

Abstract

PROBLEM TO BE SOLVED: To solve a problem wherein a constitution taking into consideration to surely prevent peripheral scattering in addition to ignition and explosion-proofing of granular powder and capable of completely separating material, is conventionally nonexistent, in a fixed volume feeder device of the granular powder.SOLUTION: A carrying system of a fixed volume feeder of granular powder constituted of a supply hopper of the granular powder, a driving part arranged under the hopper, a supply board installed on a rotary shaft interlocked with the driving part and a discharge chute formed under the outer end of the supply board, is stored in a sealed housing. The inside of the housing is put in a vacuum state or a state of filling inert gas, and an electric system including a motor for operating the driving part, is arranged outside the housing, and a motor shaft and a driving shaft of the driving part are connected by sandwiching the housing by magnetic coupling.

Description

  The present invention relates to a quantitative feeder device for powder and granular material discharged into a hopper, charged by a driving unit, transported by a feeding plate that is transported quantitatively, and discharged from a chute, in particular, flammable and explosive. The present invention relates to a quantitative feeder device for granular materials targeted at granular materials that are dangerous substances such as powerful drugs and toxic substances.

  There are various characteristics depending on the type of powder, and it is very difficult to stably supply a fixed amount in a minute range due to the influence of the characteristics, but among vibration feeder, screw feeder, table feeder, Experiments have shown that table feeders are the most effective and effective.

  Even in the case of this table feeder, there is a situation where the powder particles remain in the measurement groove of the supply panel and the situation where the powder is returned to the hopper again, but the applicant has made various measures in this regard, It has been solved.

  However, as a special characteristic of the granular material, in the case of flammable or toxic hazardous materials, heating, sparks, etc. caused by friction, impact, etc. of the electric system or mechanism, the ignition or There is no known configuration for preventing explosions and for reliably preventing scattering to the surrounding area.

  Regarding the invention of the present application, the applicant investigated prior technical documents, but was unable to find any documents that were particularly related to the present invention and considered similar.

  The problem to be solved by the invention of the present invention is that in the conventional powder feeder, it is necessary to completely prevent the material from being ignited and explosion-proof as well as to prevent the surroundings from being scattered. However, there was no configuration that could be isolated.

  In order to solve the above-described problems, a powder quantitative feeder device according to the present invention is linked to a powder supply hopper, a drive unit disposed below the hopper, and the drive unit. The conveying system of the quantitative feeder of the granular material composed of a supply board attached to the rotating shaft and a discharge chute formed below the outer end of the supply board is housed in a sealed housing, Is in a vacuum state or filled with an inert gas, and the electric system including the motor for operating the drive unit is disposed outside the housing, and the motor shaft and the drive shaft of the drive unit are magnetically coupled to the housing. It is characterized by being sandwiched and connected.

  Further, in the powder feeder for quantitative measurement according to the present invention, the hopper portion is protruded from a part of the housing, and the protruding portion is encapsulated with a cover pipe and a cap with respect to the housing. The housing is characterized in that it is detachably connected by a sealing means via an angle flange, and the sealing means is a pin plug or a screw.

  Furthermore, the quantitative feeder for granular material according to the present invention is characterized in that the cover pipe, the cap, and the angle flange are integrated with an adhesive.

  The granular material quantitative feeder according to the present invention is configured as described above. Therefore, the transport system from the hopper to the chute is housed in an airtight housing, and the housing is filled with a vacuum or inert gas, so that the granular material is flammable or toxic. However, there is no possibility of ignition or explosion because there is no spark flying or heating there, and oxygen is in a thin state. Even when the atmosphere is dry, since oxygen is thin and electrostatic charging is suppressed, there is no risk of discharging, there is no risk of material scattering around, and the operation of the drive unit does not mesh directly It was solved by adopting coupling.

It is a figure which shows the 1st Example of this invention. It is a figure which shows the 2nd Example of this invention. It is a figure which shows a cover pipe, a cap, and an angle flange.

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

  Next, a preferred embodiment of the present invention will be described with reference to the drawings. FIG. 1 shows a first embodiment. In FIG. 1, reference numeral 1 denotes a hopper into which a granular material of a target material is charged and accommodated. Below this hopper 1 is housed a gear group for power transmission that operates using a motor, which will be described later, as a drive source, and a supply board that is rotated by the gear group and has a measuring groove for conveying powder particles in a fixed amount. A gearbox 2 is provided.

  And the discharge chute 3 which discharges | emits below the granular material by which the fixed quantity was conveyed by the measurement groove | channel is provided below the outer end of the above-mentioned supply board.

  The transport system for the hopper 1, the gear box 2 containing the mechanism, and the discharge chute 3 is made of vinyl chloride having a plate thickness of about 10 mm and is housed in a sealed housing 4. The lower end of the discharge chute 3 is closely fitted and inserted into a guide cylinder 5 formed integrally with the lower surface of the housing 4. Further, an auxiliary guide cylinder 6 for guiding the discharged granular material to a target position is connected to the lower opening of the guide cylinder 5 with the upper end in contact therewith.

  On the other hand, an opening 7 is provided on the upper surface of the housing 4 at a position corresponding to the upper surface input opening of the hopper 1, and the opening 7 is opened and closed freely by a lid 20.

  A motor 8 for operating the gear group in the gear box 2 is disposed outside the housing 4. Reference numeral 8a denotes a reduction gear. Reference numeral 9 denotes an inverter for adjusting the rotational speed of the motor 8 and includes a plug 10 connected to an AC power source via a cord.

  The motor shaft 8b is provided with a permanent magnet 11 at the tip, and a permanent magnet 11a corresponding to the permanent magnet 11 is also provided at the upper end of the conduction shaft 12 for transmitting the rotational force into the gear box 2, and a pair of permanent magnets. 11, 11 a has a coupling structure in which a part of the housing 4 is sandwiched, and the pair of permanent magnets 11, 11 a is rotated synchronously by the motor 8 to transmit the rotational force to the gear group in the gear box 2. It is supposed to be.

  Further, the housing 4 is in a vacuum state or filled with an inert gas as an explosion-proof measure, and prevents ignition and explosion caused by sparks, heating, static electricity, etc. from the electrical system and mechanism. It also prevents splashing into the water.

  Next, a second embodiment of the present invention will be described with reference to FIGS. In addition, the same code | symbol is attached | subjected to the part which is common in 1st Example, and detailed description is abbreviate | omitted. In this second embodiment, reference numeral 4a denotes a housing. The housing 4a has a spacer member 15 having a U-shaped cross section between the peripheral edges of the upper plate 13 and the lower plate 14 and is hermetically sealed in the transport system. A space is formed.

  The discharge chute 3 is provided with a lower end protruding outwardly from a partial through hole 14a of the lower plate 14, and the upper plate 13 is formed with a through hole 13a for protruding the upper portion of the hopper 1 to the outside. . The lower end of the cover pipe 16 is provided so as to contact the upper surface of the opening edge of the through hole 13a so as to surround the protruding hopper 1.

  A cap 17 is crowned on the upper surface opening of the cover pipe 16 to close the upper opening. Further, a ring-shaped angle flange 18 having a substantially L-shaped longitudinal section is provided on the outer peripheral surface of the lower end of the cover pipe 16, and the cover pipe 16, the cap 17, and the angle flange 18 connect the housing 4a to the vinyl chloride. Each is formed by bonding with an adhesive for vinyl chloride. Of course, an adhesive that is compatible with the molding material of the housing 4a is used.

  The cover pipe 16 integrated with the cap 17 and the angle flange 18 is fixed to the upper peripheral edge of the opening 13a of the upper plate 13 with pin plugs 19, 19. When inserting the body, the pin plugs 19 are removed, the cover pipe 16 is removed together with the cap 17 and the angle flange 18, and the inlet of the hopper 1 is opened.

  Even in the case of the second embodiment, the inside of the housing 4a is in a vacuum state or in a state filled with an inert gas. However, since the height size of the housing 4a is reduced by the amount by which the hopper 1 protrudes, the vacuum processing is performed. In addition, the volume of the inert gas treatment can be easily reduced, and in addition, the weight can be reduced by reducing the size.

  The powder and substance quantitative feeder according to the present embodiment is configured as described above. The housings 4 and 4a in the respective embodiments are not limited to those shown in the drawings, and the shape and molding material are not particularly limited as long as the material does not adversely affect the conveyance system by keeping airtightness and isolating the material. Free design is possible. Further, the connecting member of the housing 4a and the angle flange 18 in the second embodiment can be replaced with a screw instead of the pin plug 19.

DESCRIPTION OF SYMBOLS 1 Hopper 2 Gear box 3 Discharge chute 4 Housing 4a Housing 5 Guide cylinder 6 Auxiliary guide cylinder 7 Opening 8 Motor 8a Reduction gear 8b Motor shaft 9 Inverter 10 Plug 11 Permanent magnet 11a Permanent magnet 12 Conductive shaft 13 Upper plate 13a Through hole 14 Below Plate 14a Through hole 15 Spacer material 16 Cover pipe 17 Cap 18 Angle flange 19 Pin stopper 20 Lid

Claims (4)

  A powder supply hopper, a drive unit disposed below the hopper, a supply plate attached to a rotating shaft linked to the drive unit, and a discharge formed below the outer end of the supply plate A motor for operating the drive unit described above is accommodated in a hermetically sealed housing that contains a transport system for a powder quantitative feeder comprising a chute, and the housing is evacuated or filled with an inert gas. An electric system is arranged outside the housing, and the motor shaft and the drive shaft of the drive unit are connected to each other with a magnetic coupling interposed between the housings.   The above-mentioned hopper part protrudes from a part of the housing, and the protruding part is encased in the housing by a cover pipe and a cap, and the cover pipe and the housing are detachably connected by an airtight means through an angle flange. The quantitative feeder for granular material according to claim 1, wherein   3. The powder quantitative feeder according to claim 2, wherein the sealing means is a pin plug or a screw.   The quantitative feeder apparatus for powdery particles according to claim 2 or 3, wherein the cover pipe, the cap, and the angle flange are integrated with an adhesive.

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