JP2581584Y2 - Quantitative bagging equipment for granular materials - Google Patents

Description

[Detailed description of the invention]

[0001]

INVENTION The present invention relates to a relates to quantitative bagging apparatus granular material, in particular, can be easily removed granular material staying in the apparatus, the residual to the inside of the apparatus of the powder or granular material The present invention relates to a device for quantitatively bagging powder and granules which is effective in preventing foreign substances from entering the product from the viewpoint of hygiene.

[0002]

2. Description of the Related Art Conventionally, a granular material is packed into a packaging bag by a predetermined amount and supplied to the market as a product. As described above, a fixed-quantity bagging machine is used to fill a predetermined amount of the granular material into the packaging bag. For example, for business-use flour, automatic quantitative bagging machines that simultaneously perform packaging and weighing by injecting flour into a valve-type packaging bag pre-glued with a screw and compressed air are widely used. This automatic metering bagging machine basically has a supply unit having a screw conveyor for transferring powdered particles fluidized by stirring blades , and a screw for feeding a fixed amount of powdered particles transferred by the screw conveyor.
This is a device that includes a pressure feeding unit having a feeder, a blow-fill unit that blows and fills a packaging bag, a measuring unit, and a control device.

[0003]

An invention to be Solved] However, in the conventional automatic quantitative bagging machine, the structure of the apparatus, particulate material is retained on the end or near the end of the screw conveyor, the residence
Leaving the powdery particles may cause various problems. For example, those that remain for a long period of time can degrade or become a habitat for pests. If the deteriorated product is mixed into the product powder, there is a problem that the commercial value of the product is significantly reduced. In particular, in the fixed quantity bagging apparatus shown in FIG. 1, since the granular material does not enter the space 28 near the end of the transfer screw conveyor connected to the air vent 29 and is not transported, the stagnation was remarkable.

[0004] Therefore , an object of the present invention is to make it possible to easily remove powder and granules staying in the device, prevent the powder and granules from remaining in the device, and improve the hygiene of products. It is an object of the present invention to provide an apparatus for quantitatively bagging powder and granules which is effective in preventing foreign matter from entering.

[0005]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention provides a supply section for storing powder and granules, and a supply section for storing the powder and granules.
Stirrer that stirs and mixes the stored powder and granules
A step, provided in the supply section, by the stirring means
Transfer screw control for transferring agitated and mixed powder
Conveyor and the screw conveyor for transfer.
A pressurizing screw for quantitatively pumping the granular material transferred from the feeding unit
Feeder and this screw feeder for pressure feed.
To fill a fixed amount of powder and granules fed in a fixed amount into a packaging bag
A quantitative bagging apparatus granular material having a section, further,
On the downstream side of the screw of the transfer screw conveyor
Equipment to support the end and the rotating shaft of this screw conveyor
Air blowing for blowing compressed air into the space between the inner surface of the substrate
The present invention provides an apparatus for quantitatively bagging powders and granules characterized by having means .

[0006] The air blowing means is provided for the transfer screw.
The bearing member for supporting the rotating shaft of the conveyor
At least one fixing member for fixing to the
The end of the screw of the screw conveyor and the bearing member
At least one sky communicating with said space between the inner surface of
It preferably has an air circulation path. The transfer screw
-The conveyor is stirred and mixed by the stirring means of the supply section.
The powdered granules are directly passed through the screw feeder for pressure feeding.
The main screw to be transferred to the inlet and the main screw
The main screw is used to open the inlet.
The powder transferred over the main disk is directed toward the entrance.
The auxiliary screw that transports in the opposite direction to the
Have The end of the auxiliary screw and the inner surface of the bearing member
It is preferable to provide air blowing means in the space formed between
Good.

[0007] Hereinafter, the apparatus for constant quantity bagging of powder and granules of the present invention (hereinafter referred to as the bagging apparatus).
FIG. 1 shows an embodiment of the present invention.
The present invention will be described in detail with reference to FIG. As shown in FIG. 1, the fixed quantity bagging device of the present invention basically includes a supply unit 1 for supplying a granular material, a pressurizing unit 2 for compressing and supplying a granular material, and a blowing unit for blowing and filling the granular material into a packaging bag. It has a filling section 3 and a measuring section 4 for measuring the weight of the powder and granular material to be blow-filled.

[0008] The supply section 1 comprises a granular material inlet 5, a stirring and mixing chamber 6, a stirring shaft (agitating blades) 7, a screw conveyor 8, and a granular material outlet 9. Stir mixing room 6
A stirring shaft 7 is provided in the inside of the mixing chamber 6.
Screw conveyor 8 at the lower part of the
Is communicated with the supply chamber 11 in which is disposed. The stirring shaft 7 traverses the stirring and mixing chamber 6, the tip 12 is supported by a partition 13, the other end 14 is supported by a device base 15, and is driven to rotate in one direction by a driving mechanism (not shown). You. Further, the screw conveyor 8 is provided with the supply chamber 11.
, The ends of which are supported by bearing members 16 and 17
And is rotationally driven in a fixed direction by a drive mechanism (not shown). 29 is a vent, granular material outlet more partially turned positive pressure granular material being transported by the main screw 18a of the screw conveyor 8 9
In order to prevent the particles from being transferred smoothly to
Air balance communication passage 2 provided with sub screw 18b
8A communicates with the outside.

In the apparatus of the present invention, the screw of the screw conveyor 8 is arranged so as to transfer the granular material in the direction of arrow A above the granular material outlet 9 as shown in a partially enlarged view in FIG. The composed main screw 18a
And a sub- screw 18b configured to transfer the granular material in the direction of arrow B. By rotating and driving the screw conveyor 8 configured as described above, the granular material supplied from the stirring and mixing chamber 6 is transported in the direction of arrow A by the main screw 18a, and is supplied from the granular material outlet 9 to the pressure feeding unit 2. Is done. Further, by the rotation of the sub screw 18b, the air rose together so as not to enter from the top of the granular material outlet 9 to the sub screw 18b side advances pressing the granular material in the direction of arrow B
The powder and granules accumulated in the flow passage 28A are eliminated.

Further, in the apparatus of the present invention, the sub screw over 18b side of the rotary shaft of the screw conveyor 8 tips
An air circulation path is provided in at least one of the fixing members 20 for fixing the rotatably supported bearing member 16 to the bagging device base 19. Reference numeral 22 denotes a cover.

A fixing member having this air flow path20
Is, for example, as shown in FIG. 2 and FIG.
A bolt 23 for fixing the base 6 to the bagging apparatus base body 19;
WhatThis bolt 23, Compressed air inlet 24 and compressed air
Air formed by a communication passage 26 communicating with an outlet 25
It has a distribution channel. This air flow path26of
A compressed air supply hose 27 is connected to the compressed air inlet 24
And compressed air is supplied from an air compressor (not shown).
Then, the compressed air is discharged from the compressed air outlet 25 through the communication passage 26.
AirViceScrew 18bEndAnd between the bearing member 16
Of the screw conveyor 8Vice
Termination of clew 18bandEndStay in the nearby space 28
The powdered granules are fluidized. Fluidized powder
Is sucked into the air vent 29,
Is transferred to the granular material outlet 9. Suck into air vent 29
The inserted granular material is disposed inside the air vent 29.
Degassed by a bag filter (not shown)
NeedleViceFalling on the screw 18b,ViceScrew 18
The powder is transferred to the granular material outlet 9 by b. Like this
Of the screw conveyor 8Termination of sub screw 18b
andEndRemoval of powdery particles staying in the nearby space 28
Is done.

[0012] In the device of the present invention, the air flow path
When the compressed air is blown from 26 continuously during operation of the apparatus, the compressed air hits the auxiliary screw 18b, the air is dispersed, and the accumulated powder can be more effectively removed.
It is valid. On the other hand, the timing of blowing the compressed air may be performed periodically, or when switching the packaged product in the apparatus, the accuracy of the product switching becomes higher. That is, it is possible to remove the stagnation of the previous products and prevent them from being mixed.

In the device of the present invention, the air flow path may be provided in only one of the fixing members for fixing the bearing member, or may be provided in a plurality of fixing members. Alternatively, it may be provided directly on the end plate. Usually, two fixed members are provided with air circulation paths, respectively.

Next, in the supply section 1, a fixed amount of powder and granular material is supplied from the powder and granular material outlet 9 to the pressure feeding section inlet 30 of the pressure feeding section 2 by the screw conveyor 8.

The pumping section 2 includes a pumping section inlet 30 connected to the granular material outlet 9 of the supply section 1 and a hollow tubular shaft 3.
1 and a screw 32 disposed on the outer periphery of the shaft 31
, A cylinder 34 having the screw feeder 33 therein, and a powder-particle mixing chamber 35 having a tubular trumpet section. A compressed air injection nozzle 36 having two or more pores is provided at the tip of the hollow tubular shaft 31.
Inside 1 is formed a flow path of compressed air, and a compressed air inlet (not shown) connected to an air compressor (not shown) by a rubber hose or the like is provided at the other end. The shaft 31 is driven to rotate by a transmission mechanism motor.

In the pumping section 2, the powdery material introduced from the inlet 30 of the pumping section is fed to a screw feeder 33 for pumping.
Accordingly, quantified pumped in the direction of arrow C, reached the granular material mixing chamber 35 of the cross trumpet tubular, is mixed with the air injected from the compressed air injection nozzle 36 is rotated with the rotation of the shaft 31. At this time, the air injected from the compressed air injection nozzle 36 forms a swirling airflow by the rotation of the shaft 31, so that the injected air and the granular material are sufficiently mixed, and the high-fluidity granular material- The air-mixed air stream is blown into the blow-fill unit 3.

The blow-filling section 3 is provided on a flexible tube 37 connected to the powder-mixing chamber 35 of the pumping section 2, a blowing pipe 38 connected to the flexible tube 37, and an outer periphery of the blowing pipe 38. Swellable rubber tube 39. The inflatable rubber tube 39 is connected to an air compressor (not shown) in the same manner as the air injection nozzle 36 via a rubber hose, and is supplied with compressed air. The expandable rubber tube 39 is formed to expand when compressed air is introduced.

In the blowing and filling section 3, a blowing pipe 38 is inserted into a filling port provided in a packaging bag so that an inflatable rubber tube 39 is embedded therein, and the inflatable rubber expanded by the introduction of compressed air. The packing bag is tightly held by the blow tube 38 by the tube 39 being tightly locked to the inner surface of the packing bag. In this way, the packaging bag held by the blowing pipe 38 is
The powder and particles are expanded by the blowing pressure of the powder-particle mixture airflow from the pressure feeding unit 2, and the powder and granules are blow-filled.

Further, the powder and granules blow-filled into the packaging bag are as follows:
The information of the obtained weighing values sequentially measured by the weighing unit 4 is fed back to the control device, and the control device controls the operation of the screw feeder 33 for pressure feeding in the pressure feeding unit 2 and the supply of the compressed air. In the control by the control device, when the weight of the granular material blown into the packaging bag approaches a predetermined weight, the rotational drive of the screw feeder 33 for pressure feeding is adjusted stepwise, and the granular material mixing chamber 35 is adjusted.
The transfer of the powder to the powder is gradually reduced. Further, when the weight of the granular material reaches a predetermined value, the rotational drive of the screw feeder 33 for pressure feeding is stopped, the transfer of the granular material to the granular material mixing chamber 35 is stopped, and the compressed air is stopped. Supply is stopped. When the supply of compressed air is stopped,
The injection of the air from the compressed air injection nozzle 36 is stopped, and the filling of the powder-particle mixture airflow from the blowing pipe into the packaging bag is stopped, and the expansion of the expandable rubber pipe 39 through the rubber hose is performed. Since the pressurization is stopped, the expandable rubber tube 3
9 shrinks, and the packaging bag is detached from the blow tube 38.

After the predetermined amount of the granular material is filled in the packaging bag in this way, the filling port of the packaging bag is closed, and the package is carried out to a subsequent step.

[0021]

[Effects of the Invention] The device for quantitatively bagging powders and granules of the present invention can easily remove powders and granules staying in hard- to-remove portions in the device, and can keep the powders and granules remaining in the device. This is effective for preventing sanitary contamination of products from the viewpoint of hygiene.

[Brief description of the drawings]

[1] a schematic diagram illustrating an embodiment of the apparatus of the present invention
There is .

FIG. 2 is an enlarged view of a part of the device of the present invention.
There is .

FIG. 3 is a schematic cross-sectional view illustrating a structure of a fixing member having an air circulation path of the device of the present invention .

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Supply part 2 Pumping part 3 Blow-in filling part 4 Measuring part 5 Granule inlet 6 Stirring mixing chamber 7 Stirring shaft (stirring blade) 8 Screw conveyor 9 Powder and granule outlet 10 Communication part 11 Supply chamber 12 Tip part 13 Partition wall 14 End 15 Device base 16, 17 Bearing member 18a Main screw 18b Secondary screw 19 Bagging device base 20 Fixing member 22 Cover 23 Bolt 24 Compressed air inlet 25 Compressed air outlet 26 Air flow path ( communication path ) 27 Compressed air supply hose 28 Pressure feed Space 28A near the end of the screw feeder for use Air balance communication passage 29 Air vent 30 Inlet for pumping section 31 Shaft 32 Screw 33 Screw feeder for pumping 34 Cylinder 35 Powder mixing chamber 36 Compressed air injection nozzle 37 Flexible tube 38 Blowing tube 39 Expandable rubber tube

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-2-282024 (JP, A) JP-A 62-159402 (JP, U) JP-A 63-183003 (JP, U) JP-A 63-183003 86001 (JP, U) (58) Field surveyed (Int. Cl. ⁶ , DB name) B65B 1/00-3/36

Claims (3)

(57) [Scope of request for utility model registration] 1. A supply unit for storing powders and granules, and a supply unit inside the supply unit.
Stirring means for stirring and mixing the stored powder and granules
And provided in the supply section and stirred by the stirring means.
Transfer screw conveyor for transferring the mixed powder
And the supply by the transfer screw conveyor
Screw for constant-pressure feeding of powder and granules transferred from the section
-Feeder and this screw feeder for pressure feeding
Filling unit that fills a fixed amount of powdered granules fed in a fixed amount into packaging bags
A fixed quantity bagging apparatus for powdery and granular materials, further comprising a screw of the transfer screw conveyor.
Supports the downstream end and the rotating shaft of this screw conveyor
Compressed air into the space between the inner surface of the device body
An apparatus for fixed quantity bagging of powder and granules, characterized by having an air blowing means . (2) The air blowing means is provided for the transfer screw.
The bearing member for supporting the rotating shaft of the conveyor
At least one fixing member for fixing to the
The end of the screw of the screw conveyor and the bearing member
At least one sky communicating with said space between the inner surface of
The quantitative bagging of the granular material according to claim 1, which has an air circulation channel.
apparatus. (3) The transfer screw conveyor is
The powder and granules stirred and mixed by the stirring means of the supply unit, directly,
A main disk for transferring to the inlet of the screw feeder for pressure feeding
And the main screw is provided to extend,
Granules transferred over the inlet by the main screw
With the body facing the inlet and opposite to the direction of transfer of the main screw
With a sub-screw to transfer in the direction, The space is formed between an end of the auxiliary screw and the bearing member.
The powder according to claim 2, which is a space formed between the inner surface and the inner surface.
Device for quantitative bagging of granules.