JP2018140344A - Separation device of granular material, air and foreign matter - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a separation device of a granular material, air and foreign matter in a pneumatic conveyer where the influence of shape change caused by collision when the granular material to be conveyed flows in the separation device is minute, residue in the device is eliminated even during the operation of a conveyance air generating device after finishing conveyance and pneumatic separation function that the foreign matter having a specific gravity and air resistance different from the granular material to be conveyed is synchronized with conveyance air, separated and discharged in an air outlet direction.SOLUTION: In a separation device (a) of a granular material, air and foreign matter,: conveyance air swirls reversely and upwardly from the lower end part of a passive part cylinder 1 to a discharge cylinder 4 connected to a separation part cylinder 3 in an upper tangential direction and is discharged from the device to a next process device; separation effect from the granular material to be conveyed is caused by synchronizing the foreign matter with the action of a reverse swirl upward flow together with the conveyance air; and the optimization of a separation action and the presence or absence of a residual phenomenon are regulated by vertically moving the height of the cylinder and changing the acting height of the reverse swirl upward flow to the separation part cylinder.SELECTED DRAWING: Figure 1

Description

The present invention relates to separation of transport particles and transport air in an air transport device.

In particular, when the transported granule is food, foreign matters other than the intended transported granule are mixed and commercialized, and the social trust of the manufacturing company is lost. Therefore, in the manufacturing process to commercialize, high-priced machines such as sieve sorting, wind specific gravity sorting, optical sorting and magnetic sorting are passed through to improve the purity and quality of products. Conventionally, elevators, conveyors, pneumatic transportation, and the like have been widely used in the transportation process of moving particles in the manufacturing process.

Conventionally, when using an air transportation device in various manufacturing and transportation processes, a method of separating transportation air and transportation particles using a centrifugal force in a cyclone shape is known.

In order to separate the fine powder from the transport particles, the film is specially made in the cyclone shape, which is made of a material with a hole and is specialized for fine powder separation, and the film piece and paper piece with a cylinder inside. There is also a separation device.

JP2011-246246 JP2012-24663

“Hitachi Vortex Blower” Catalog Issuer Hitachi Industrial Equipment Systems Co., Ltd.

Pneumatic transport moves the air in a transport cylinder. The transported goods and the transported air are synchronized with the speed and strength of the air flow and move in the transport cylinder. For this reason, an apparatus for separating the transport air and the transported goods at the transport destination end is indispensable. As a device for separating the transported air and the transported goods, the cyclone shape has been often used conventionally, and it is well known that the air flowing in is separated upward and the transported goods are separated downward. However, the cyclone shape is often used for dust collectors and the like. In principle, a certain amount of fine powder is separated from the transport air, and the fine powder is discharged downward as well as the transported goods. Therefore, the cyclone-shaped separation device cannot separate the transported material from the fine powder and foreign matter.

The cyclone-shaped inflow cylinder is connected in the tangential direction of the cylinder, and even if it enters the transport cylinder at a speed of about 18m / sec to 30m / sec, it will contact along the inner circumference of the cyclone-shaped cylinder and reduce the speed. Therefore, there is little impact on the transported goods. However, depending on the shape of the cyclone, there will be a part where the balance between the centrifugal force due to the swirling speed of the transport air in the cylindrical and conical parts and the weight of the transported goods becomes equal, and the transported goods that are not dropped and discharged will remain. When the fine powder foreign matter that is not transported stops the transport air generator after transport, the residue falls and enters the product granules. Therefore, there are a transported product that does not affect the presence of a residue when using the cyclone shape separation device, and a transported product such as a food product that causes trouble if the residue is present.

When the transport air generating device is stopped with respect to the residue when separating the transport air and the transport object in the cyclone shape, the centrifugal force of the swirling flow disappears and the residue also naturally falls and the residual phenomenon disappears. However, the method of starting and stopping the transport air generator to eliminate this residual phenomenon has an adverse effect on the transport air generator described in Non-Patent Document 1 frequency of use, and automatic and manual stop devices at the end of the package, Labor and equipment costs increase.

Patent Document 1 is composed of a cylinder with a hole on the inside, and a larger one than the hole is not separated. In addition, since the inflowed particles come into contact with the inner surface of the perforated cylinder and rub against each other while drawing an arc, wear and scratches on the surface of the transported particle product may be considered, and the quality of the particle product may be reduced. Patent Document 2 specializes in film pieces and paper pieces.

In this application, there is little change in shape due to impact and wear of transport particles, there is no residue even during operation of the transport air generator, and foreign materials with specific gravity and air resistance different from transport particles are separated and discharged to the transport air outlet side The present invention provides a granular air foreign matter separation device in a pneumatic transport device having a function.

Discharge from which transport air is discharged along the circumferential tangent line of the cylinder 3 and the passive part to which the inflow cylinder 2 into which the transport particles flow and the transport air flows are connected along the circumferential tangent line of the cylinder 1 whose upper part is closed This is an apparatus having a structure in which a cylinder 4 and a separating part in which a funnel-shaped inverted conical part 5 and a cylinder 6 are connected to the lower end of the cylinder 3 are connected, and a passive part cylinder 1 is inserted into the upper part of the separating part cylinder 3.

It is a premise that an apparatus 7 capable of blocking air and discharging transport particles at the outlet part of the transport part granule 6 of the separation part lower cylindrical shape 6 of the device of the present application is necessarily provided.

The air shut-off / discharge device 7 is a rotary valve or the like that has been conventionally used for collecting collected dust such as a dust collector.

The present application device has a structure in which a passive portion composed of 1, 2 and a separation portion composed of 3, 4, 5, 6 are inserted vertically, and is shown in the perspective view of the granular air foreign matter separation device in FIG. .

The transport air, transport particles and foreign matter in the passive part of the device of the present application flow in from the inflow cylinder 2 and fall in contact swirl along the shape of the cylinder 1 and move from the end of the cylinder 1 to the separation part funnel-shaped cone part 5. During this movement, the particles fall by gravity due to a decrease in speed due to contact swirling in the passive part, and are discharged from the air-blocking particle discharging device 7 to the outside. The transported air turns upside down along the shape of the separation part cylinder 3 from the separation part discharge cylinder 4 connected above the lower end surface of the passive part cylinder 4. Foreign matter is also synchronized with the reverse swirl upward flow and discharged to the outside.

It is shown in the trend diagram of transport air, transport granules and foreign matter in Fig. 2.

The transported air in the apparatus of the present application moves from the lower end surface of the passive part leaking cylinder 1 to the separating part funnel shapes 5 and 6, and reversely ascends and rises on the inner periphery of the cylinder 3 and is discharged from the discharge cylinder 4 to the outside. With the shape of the cylinder 1 having no resistance, the particles and foreign substances are synchronized with the transporting air in which the swirl flows downward, and moves to the separator funnel shapes 5 and 6. At this time, the transport air becomes a reverse swirl upward flow toward the discharge cylinder 4 connected above the separation unit cylinder 3. This reverse swirl upward flow has the effect of separating the particles from the foreign matter. The height at which the reversal swirl upflow is generated is important.If it is close to the discharge cylinder 4, it will be discharged to the transport granule, and if it is close to the funnel shape 5, the centrifugal phenomenon of the swirl flow will cause a residual phenomenon or foreign matter will fall and decrease the separation effect Invite. In order to minimize these phenomena, the passive cylinder 1 has a structure that can move up and down, and by adjusting the position where the reverse swirl upflow acts, the maximum effect of the separation action is demonstrated. Toward the discharge cylinder 4, the transport particles are dropped to the air shutoff discharge device 7 without being affected by the transport air, and the residual phenomenon is eliminated.

This is shown in the side view of the transport particle, air, and foreign matter trend implementation in FIG.

The foreign substances described in the present application are denatured deformed granules, fine powder, fragments, hulls, and hair, insects, dust, etc., other than transport particles having a specific gravity lighter than air transport and different in air resistance. It is.

There are many cases where foreign materials other than the target particles are mixed in the raw material processing, processing, sorting, and packaging. In order to remove these foreign substances and improve the purity quality of the products, they pass through various sorters to remove foreign substances other than the target particles. Elevators, conveyors, and pneumatic transportation equipment are used in this transit transportation process. By using the granular air foreign matter separation device of this application for this transportation device, it is easy to clean because of its simple structure, improving the purity quality of the product by removing foreign matter at the transportation stage, surface quality deterioration, measures against foreign matter contamination risk, This has the effect of reducing contamination costs.

(A) is a perspective view of this granule air foreign object separation device. (B) is a perspective view of the structure of the particulate air foreign matter separation device of the present application. (A) is an air trend perspective view of this particulate air foreign matter separation device. (B) is a transport particle and foreign matter trend perspective view of the present granule air foreign matter separation device. These are the implementation figures of this-application granule air foreign material separation apparatus. (A) is an implementation side view, (b) is an implementation plan view, and (c) is an implementation side view in which a passive part and a separation part are separated. (A) is a side view of the entire structure of the air conveying apparatus incorporating the device of the present application, and (b) is a plan view of the entire structure of the air conveying apparatus. These are the transport granule, air, and foreign matter movement implementation side view of this granule air foreign matter separation device.

Granules and foreign matter transported at a transport air speed of 18 m / sec to 30 m / sec flow from the passive part inflow cylinder 2. The transportation air speed is determined by the air amount and pressure of the suction device and the width and length of the cross section of the inflow cylinder. The transportation air that flows in from the inflow cylinder 2 decreases in the air velocity in the wide space of the cylinder 1, and the particles and foreign substances that are transported at the same time make contact and swirl along the shape of the cylinder 1. Move with the transport air to the part.

The ascending air velocity from the separation part cylinder 3 to the discharge cylinder 4 is determined by the size of the gap area formed on the outer periphery of the passive part cylinder 1 and the inner periphery of the separation part cylinder 3. The size of the cylinder 1 and the cylinder 3 is determined assuming the separation exhaust air velocity based on the size of the gap.

The separation unit discharge cylinder 4 is connected above the tangent line of the cylinder 3 along the rotation direction of the inflowing carrier air.

The passive part cylinder 1 is inserted from the upper part of the separation part cylinder 3, and the length is longer than that of the separation part cylinder 3 to the vicinity of the conical part 5, so that it can be easily moved up and down.

When the transport particles and foreign matter move together with the transport air from the lower end face of the passive part cylinder 1 to the inner periphery of the separation part funnels 5 and 6, foreign matter having a lighter specific gravity and a larger air resistance than the transport target grain It goes up in reverse with the transport air to the discharge cylinder 4 connected to the upper side. When passing through the gap between the lower end face of this passive cylinder 1 and the inner periphery of the separator funnel shape 5,6, it has a function of wind sorting that separates foreign substances mixed with the transport particles.

A transparent window for internal confirmation is provided in the upper closed part of the cylinder 1 so that the actual transported goods can be transported, the separation residual state can be confirmed, and the height of the cylinder 1 relative to the passive part can be adjusted.

In actual pneumatic transport, the actual speed in the transport cylinder cannot be determined by the transport distance, the bend, the device, and the pressure loss of the package. The device of the present application is actually transported and the internal state is confirmed through the inspection window of the cylinder 1 so that the user can easily adjust the position of the passive part cylinder 1 relative to the separation part.

Depending on the nature of the particles being transported, it is necessary to clean the interior of both the passive and separating parts. Since the passive part and the separating part are plug-in type, the device of the present application can be easily removed and the inside can be easily cleaned.

It is well known that the pneumatic transport device has a suction method and a pressure feeding method, and the granule air foreign matter separation device can be used for either suction or pressure feeding.

An example of the suction method is shown in FIG. It is composed of an inlet 10 for feeding transport particles, a granular air foreign matter separation device 11 of the present application, an air shutoff / discharge device 12, a tank 13 for storing transport particles, a dust collecting device 14, and a suction device 15.

The transport particles flowing in from the inlet 10 flow into the granular air foreign matter separator 11 together with the transport air and are separated into transport air, foreign matter and transport particles. Falls into the storage tank 13. The transport air and foreign matter flow into the dust collector 14 and are separated into air and foreign matter by a filter installed inside the dust collector 14, and the foreign matter is discharged to the outside from the dust collector foreign matter discharge port and filtered through the filter. The air passes through the transport suction air generator 1 and is released to the atmosphere.

In the case of the suction method of FIG. 4, an air shut-off / discharge device or an air shut-off valve is necessary so that air does not flow into the lower foreign matter discharge port of the dust collector 14.

The present particulate air foreign matter separation device can be provided with a wind power sorting function by replacing the device for separating the transported material and air of the entire configuration of the conventional pressure feeding and suction air transportation device with the present device.

Foreign matter removal devices and transport devices are always used in processing and production processes such as grains, resin pellets, seeds, wood pellets, small animal feed pellets, food pellets and the like. By using the granular air foreign matter separation device in pneumatic transportation, the product quality and quality improvement due to the reduction in the amount of worn products and the foreign matter removal effect at the transportation stage, the risk of contamination, contamination risk, removal equipment facilities This will reduce installation costs.

1 Passive cylinder
2 Passive part inflow tube
3 Separating cylinder
4 Separation tube
5 Separation funnel-shaped inverted cone
6 Separating part funnel-shaped cylindrical part
7 Air shut-off device

10 Particle input device
11 Granular air foreign matter separator
12 Air shut-off device
13 Storage tank
14 Dust collector
15 Transport air generator

A Target transport particles
B Foreign object
C Air flow

Claims (7)

The apparatus of the present application in an apparatus that constitutes pneumatic transportation provided with a wind sorting function that improves the purity quality of the transportation granules by discharging mixed foreign substances together with air when separating the intended transportation granules and transportation air. The passive part of the inflow cylinder 2 connected on the tangent of the cylinder 1 closed at the top, the discharge cylinder 4 connected on the tangent of the cylinder 3 in the opposite direction of the inflow cylinder 2 and the funnel-shaped cone 5 at the bottom of the cylinder 4 The apparatus of the present application is configured by a separation part having a structure to which a cylinder 6 is connected, and the passive part cylinder 1 is inserted into the upper part of the separation part cylinder 3 so that the passive part can be easily moved up and down. The passive part cylinder 1 is inserted into the upper part of the separation part cylinder 3 and connected to the upper part of the passive part cylinder 3 so that the passive part can be easily moved up and down. The device of the present application having a structure that facilitates adjustment of the effect of the wind sorting function acting on the transport particles by the reverse swirl upward flow toward the discharged discharge cylinder 4 and the disappearance of the residual phenomenon. The device of the present application in which a transparent inspection window capable of observing the inside is provided at a portion where the upper portion of the cylinder 1 is closed, the separation and remaining state are grasped, and the height of the cylinder 1 is easily adjusted with respect to the separation portion cylinder 3. The apparatus of the present application having a structure in which the passive part and the separation part can be removed, and the inside of the passive part and the separation part can be easily cleaned. The apparatus of the present application in which a passive part cylinder 1 made of a material having a hole smaller than a transport target granule is provided at a lower part of the cylinder 1 and a separation function is provided even when passing through the holed cylinder 1. The present device having a structure in which the passive part inflow cylinder 2 is connected to any part other than the tangent line of the cylinder 1.