JP7629193B2 - Granular material conveying device - Google Patents

Description

The present invention relates to a granular material transport device.

Conventionally, a granular material conveying device disclosed in Patent Document 1 (hereinafter referred to as the "conventional example") has been proposed as a device for conveying granular materials such as rice.

This conventional example is a bucket conveyor in which numerous buckets are provided on the outer surface of a circulating belt suspended between a driving pulley and a driven pulley, which are provided at the top and bottom of the device body. As the circulating belt rotates, each bucket rises and falls, and granular material is transported from a lower position to an upper position in the transport space in which the conventional example is installed.

JP 2021-37435 A

However, as mentioned above, the conventional example only transports granular materials from a lower position to an upper position on the device body, which limits the locations and applications where it can be used.

The present invention solves the problems mentioned above and provides a highly practical granular material transport device that provides unprecedented benefits.

The gist of the present invention will be explained with reference to the attached drawings.

A granular material conveying device having an intake section 1 for intake of gas, a gas conveying pipe section 2 extending from the intake section 1 for conveying granular material 50 by gas, and a separation section 3 provided in the gas conveying pipe section 2 for introducing gas containing the granular material 50 and centrifuging the gas and the granular material 50, the separation section 3 being provided with a gas inlet section 3a for introducing the gas containing the granular material 50 and a gas outlet section 3b for discharging the gas obtained by centrifuging the granular material 50 at an upper portion, and a granular material outlet section 3c for discharging the granular material 50 centrifuged at a lower portion. the granular material discharge port 3c is provided with a lid 4 which is closed by the intake of the intake section 1, and the granular material 50 is piled up in the separation section 3 when the lid 4 is in the closed state, and the lid 4 is constructed so as to open by its own weight when the intake of the air is stopped, and further, the tip of the gas transport pipe section 2 is connected to a granular material storage section 7 which stores the granular material 50, and the granular material storage section 7 is arranged to be capable of being raised and lowered .

The present invention also relates to a granular material conveying device, characterized in that the gas conveying pipe section 2 in the granular material conveying device described in claim 1 is a flexible pipe.

The present invention also relates to a granular material conveying device as described in any one of claims 1 and 2, characterized in that the intake section 1 or the gas conveying pipe section 2 is provided with an air-blocking section 5 that blocks airflow.

The granular material conveying device according to claim 1 or 2 is characterized in that the intake section 1 has a gas suction section 1c connected to the gas conveying pipe section 2, and this gas suction section 1c is provided with an air blocking section 5 that blocks air flow.

The granular material conveying device according to claim 4 is characterized in that the air-blocking section 5 is configured by a movable blocking plate 5' having a blocking section 5b that blocks the gas suction section 1c so that it cannot be ventilated and an open hole section 5a that opens the gas suction section 1c so that it can be ventilated.

The granular material conveying device according to any one of claims 1 to 5 is characterized in that the cover 4 is pivotally attached so as to be freely opened and closed in the vertical direction via a hinge portion 11 provided in the vicinity of the granular material discharge port portion 3c.

The present invention is configured as described above, and is therefore an unprecedentedly practical granular material transport device that can transport granular materials effectively and is extremely convenient as it can be used anywhere and for any purpose.

FIG. 2 is an explanatory diagram showing the embodiment in a state of use. FIG. 2 is an explanatory diagram of a main part of the present embodiment. FIG. 2 is an explanatory diagram of a main part of the present embodiment. FIG. 2 is an explanatory diagram of a main part of the present embodiment. FIG. 2 is an explanatory diagram of a main part of the present embodiment. FIG. 2 is an explanatory diagram of the operation of the main parts of the present embodiment. FIG. 2 is an explanatory diagram of the operation of the main parts of the present embodiment.

The preferred embodiment of the present invention will be briefly explained below, showing the operation of the invention based on the drawings.

When air is drawn into the intake section 1, the air in the gas transport pipe section 2 and the separation section 3 moves to the intake section 1. At this time, negative pressure is created inside the separation section 3, and the granular material discharge port section 3c is closed by the lid body 4, which was in an open state due to its own weight.

Because the inside of the separation section 3 is in a negative pressure state, for example, granular material 50 arranged at the tip of the gas transport pipe section 2 is sucked in and transported by gas, and the gas containing the granular material 50 is introduced into the separation section 3 from the gas inlet section 3a, where it is centrifuged to separate the gas and the granular material 50, the gas is discharged from the gas outlet section 3b, and the granular material 50 falls and accumulates near the granular material outlet section 3c, which is closed by the lid body 4.

When the intake is stopped at any time, the lid 4 opens under its own weight, and the accumulated granular material 50 is discharged from the granular material discharge section 3c.

As a result, the granular material 50 can be transported effectively by utilizing the suction action, and the gas transport pipe 2 and the separation section 3 can be freely moved to any position, making it extremely convenient as there are no limitations on the location or application of use.

Specific examples of the present invention will be described with reference to the drawings.

This embodiment is a granular material conveying device having an intake section 1 that draws in gas, a gas conveying pipe section 2 that extends from the intake section 1 and conveys granular material 50 as gas, and a separation section 3 that is provided in the gas conveying pipe section 2 and introduces gas containing the granular material 50 and separates the gas and the granular material 50 by centrifugal separation.

In addition, this embodiment is applied to the transportation of grains (broken rice) as the granular material 50, but it is not limited to this and also includes fine grains (powders).

The following is a detailed explanation of the granular material conveying device according to this embodiment.

The intake unit 1 is an air pump consisting of a rotary drive unit 1a (electric motor) provided in a case-shaped main body 1' as shown in Figures 1 and 2, and a blade unit 1b provided on the drive shaft 1a' of the rotary drive unit 1a. The blade unit 1b is covered with a cover body 6, and the cover body 6 is provided with a gas suction unit 1c and a gas exhaust unit (not shown) consisting of holes.

Therefore, when the blade portion 1b rotates, air is sucked into the cover body 6 through the gas suction portion 1c, and then the air sucked into the cover body 6 is exhausted from the gas exhaust portion. The rotation drive portion 1a is controlled to be turned on and off by the control portion at a predetermined timing in synchronization with the reciprocating linear drive portion 9 described later, and overload caused by the forced cutoff of the intake air by the air cutoff portion 5 described later, i.e., burn-out due to overload when the operation of the rotation drive portion 1a is continued even after the intake air is forcibly cut off by the air cutoff portion 5, is prevented.

The gas suction section 1c is connected to the base end of the gas transport pipe section 2 (first pipe section 2A) described below, and an air passage blocking section 5 is provided between the gas suction section 1c and the gas transport pipe section 2 to block air passage to the gas suction section 1c.

As shown in FIG. 2, this airflow blocking section 5 is configured by a movable blocking plate 5' having a blocking section 5b that blocks the gas suction section 1c of the intake section 1 so that it cannot be ventilated, and an open hole section 5a that opens the gas suction section 1c so that it can be ventilated.

Specifically, as shown in Figures 2 and 3, the blocking plate 5' is provided in the case-shaped main body 1' so as to be rotatable up and down, with the aforementioned blocking portion 5b and open hole portion 5a provided at the tip, and a biasing body 8 (tension spring) that biases the blocking plate 5' to rotate so that the gas suction portion 1c is blocked by the blocking portion 5b at the base end, and a reciprocating linear drive unit 9 (solenoid) that operates at a predetermined timing to rotate the blocking plate 5' against the bias of the biasing body 8 so that the gas suction portion 1c is opened by the open hole portion 5a.

This reciprocating linear drive unit 9 is controlled by the control unit so that it turns on and off approximately every 5 seconds, and the operation timing is set so that the gas suction unit 1c in the blocking plate 5' is in a non-ventilable state and a ventilable state for approximately 5 seconds each, and when this reciprocating linear drive unit 9 is turned off, the blocking plate 5' rotates due to the bias of the biasing body 8. The on/off timing by the control unit can be changed as appropriate.

This embodiment is equipped with a structure that forcibly blocks the intake of the intake section 1, making the transportation of granular material 50 extremely efficient.

In other words, if there were no structure (air flow blocking section 5) forcibly cutting off the intake of the intake section 1, the drive source 1a (electric motor) of the intake section 1 would not stop immediately, but would stop after attenuating (the intake would gradually weaken), resulting in a time lag before the lid 4 opens. In this regard, this embodiment forcibly cuts off the intake regardless of the operation of the drive source 1a, so that the lid 4 can be opened immediately at a predetermined timing and the granular material 50 can be discharged from the granular material discharge port 3c, and the conveying operation of the granular material 50 can be carried out efficiently.

In this embodiment, the airflow blocking section 5 is provided in the intake section 1, but it may also be provided in the gas transport pipe section 2 (first pipe section 2A), and any structure that forcibly blocks airflow within the device and stops intake of air by the intake section 1 will suffice.

The gas transport pipe section 2 is composed of a first pipe section 2A provided between the intake section 1 and the separation section 3 described below, and a second pipe section 2B provided between the separation section 3 and the granular material storage section 7 described below.

The first tube section 2A and the second tube section 2B are flexible tubes (flexible bellows-shaped tubes with alternating peaks and valleys) made of suitable synthetic resin materials as shown in Figure 1.

Since the gas conveying pipe section 2 is flexible, the intake section 1, separation section 3 and granular material storage section 7 can be positioned and used at any desired location.

The separation section 3 is composed of a centrifuge vessel having a gas inlet 3a for introducing gas containing granular material 50 and a gas outlet 3b for discharging granular material 50 and centrifuged gas at its upper portion, and a granular material outlet 3c for discharging gas and centrifuged granular material 50 at its lower portion.

Specifically, the separation section 3 is a vertically long cylindrical body made of an appropriate synthetic resin material as shown in Figures 1, 4, and 5, and is composed of a vertical upper cylindrical section 3A and a downwardly inclined lower cylindrical section 3B that is connected to the upper cylindrical section 3A via a bent section.

By making the lower part of this separation section 3 the lower tube section 3B described above, good discharge of granular material 50 from the granular material discharge port section 3c can be achieved.

In other words, if the lower part of the separation section 3 were vertical, the range of motion (rotation angle) of the lid body 4, which will be described later, would have to be large in order to discharge the granular material 50 from the granular material discharge port 3c (to ensure sufficient space for the granular material 50 to fall), but a strong force (suction action) would be required to close this lid body 4.

Therefore, in this embodiment, by adopting the above-mentioned configuration, it is possible to ensure sufficient space for the granular material 50 to fall without increasing the range of motion of the lid body 4, so that the granular material 50 can be discharged well, and moreover, a strong force is not required to close the lid body 4, and it can be closed reliably.

In addition, a gas inlet 3a is provided at a lateral position of the upper part of the separation section 3 (the upper end of the upper tube section 3A) through which gas containing the granular material 50 transported by the gas transport pipe section 2 (second pipe section 2B) is introduced downward along the inner surface, and a gas outlet 3b is provided at a central position of the upper part of the separation section 3 (the upper end of the upper tube section 3A) through which gas resulting from centrifugal separation of the granular material 50 is exhausted.

The lower part of the separation section 3 (the lower end of the lower tube section 3B) is provided with a granular material outlet section 3c for discharging the granular material 50 separated by centrifugal separation from the gas, and the granular material outlet section 3c is further provided with a lid body 4 for closing the granular material outlet section 3c.

This lid 4 is made of a suitable synthetic resin plate material as shown in Figures 1 and 4, and is rotatable in the vertical direction via a hinge portion 11 provided on the upper outer peripheral surface of the lower tube portion 3B, and is configured to rotate downward under its own weight from a closed state to an open state of the granular material discharge port portion 3c.

Specifically, when the intake of the intake section 1 creates a negative pressure inside the separation section 4, the suction action causes the open lid body 4 to rotate in the closing direction (upward), and while the intake of the intake section 1 continues, the closed state of the lid body 4 is maintained, and when the intake of the intake section 1 stops, the lid body 4 rotates in the opening direction (downward) due to its own weight.

Therefore, the gas containing the granular material 50 transported by the gas transport pipe section 2 (second pipe section 2B) and introduced from the gas inlet section 3a moves downward by a vortex flow along the inner surface of the separation section 3, and the granular material 50 is centrifuged. The gas from which the granular material 50 has been centrifuged moves upward through the center of the separation section 3 and is discharged from the gas discharge section 3b (transported to the intake section 1). Meanwhile, the granular material 50 centrifuged from the gas is deposited on the lid body 4. After that, when the intake by the intake section 1 is stopped and the lid body 4 is opened by its own weight, the granular material 50 deposited on the lid body 4 is discharged from the granular material discharge port section 3c.

In addition, in this embodiment, a separation section support body 10 is provided to support the separation section 3 at a predetermined height.

This separation section support 10 is made of suitable metal material as shown in Figure 1, and has a frame structure 10a with a predetermined height, and a storage structure 10b with an open bottom that stores the separation section 3 above the frame structure 10a, and is configured so that a FIBC bag 51 with its top opening open can be placed below the storage structure 10b.

Therefore, the granular material 50 discharged from the granular material discharge port 3c of the separation section 3 falls into the FIBC bag 51.

In addition, in this embodiment, the tip of the gas transport pipe section 2 (second pipe section 2B) is connected to the granular material storage section 7 that stores the granular material 50.

As shown in Figure 1, the granular material storage section 7 is composed of a hopper body made of an appropriate metal member, and is provided with a cylindrical slide section 7a that slides along the guide section 12a of the granular material storage section support body 12 described below. The slide section 7a is provided with a stopper (not shown) that stops the slide section 7a at any position on the guide section 12a.

As shown in Figure 1, the granular material storage section support 12 is composed of a plate-shaped grounding section 12b and a support section 12a erected in the center of the upper surface of the grounding section 12b, and this support section 12a is configured as a guide section 12a that guides the sliding section 7a.

Therefore, the granular material storage section 7 rises and falls relative to the granular material storage section support body 12 and is supported at a predetermined height.

Reference numeral 52 denotes a granular material supplying device (rice husk removing device) that supplies granular material 50 (broken rice) to the granular material storage section 7.

Since this embodiment is configured as described above, when air is sucked in through the intake section 1, the air in the gas transport pipe section 2 and the separation section 3 moves to the intake section 1. At this time, negative pressure is created inside the separation section 3, and the granular material discharge port section 3c is closed by the lid body 4, which was in an open state due to its own weight.

Because of the negative pressure inside the separation section 3, for example, granular material 50 arranged at the tip of the gas transport pipe section 2 is sucked in and transported by gas, and the gas containing the granular material 50 is introduced into the separation section 3 from the gas inlet section 3a, where it is centrifuged to separate the gas and the granular material 50, the gas is discharged from the gas outlet section 3b, and the granular material 50 falls and accumulates near the granular material outlet section 3c (on the inner surface of the lid body 4 and above it) which is closed by the lid body 4 (see Figure 6).

Next, when the intake is stopped at any time, the lid 4 opens due to its own weight (and the weight of the accumulated granular material 50), and the accumulated granular material 50 is discharged from the granular material discharge section 3c (see Figure 7).

Therefore, according to this embodiment, the suction action can be used to effectively transport the granular material 50, and the gas transport pipe 2 and the separation section 3 can be freely moved to any position, making it extremely convenient as there are no limitations on the location or purpose of use.

In addition, this embodiment uses a flexible tube as the gas transport tube section 2, so in this respect too, the gas transport tube 2 and separation section 3 can be freely moved to any position, which is very convenient.

In addition, in this embodiment, the intake section 1 or the gas transport pipe section 2 is provided with an air-blocking section 5 that blocks airflow, so the granular material 50 can be transported efficiently.

In addition, in this embodiment, the intake section 1 has a gas suction section 1c connected to the gas transport pipe section 2, and this gas suction section 1c is provided with an air blocking section 5 that blocks air flow. This air blocking section 5 is configured by a movable blocking plate 5' having a blocking section 5b that blocks the gas suction section 1c so that it cannot be ventilated and an open hole section 5a that opens the gas suction section 1c so that it can be ventilated. This ensures that air flow is blocked, and the simple structure makes it inexpensive and suitable for mass production.

In addition, in this embodiment, the lid body 4 is pivoted so that it can be opened and closed in the vertical direction via a hinge portion 11 provided in the vicinity of the granular material discharge port portion 3c, so that the lid body 4 can be opened and closed reliably.

In addition, in this embodiment, the tip of the gas transport pipe section 2 is connected to the granular material storage section 7 that stores the granular material 50, and the granular material storage section 7 is arranged so that it can be raised and lowered, so that it is very convenient in that it can be used in any place or for any purpose.

The present invention is not limited to the examples, and the specific configuration of each component can be designed as appropriate.

REFERENCE SIGNS LIST 1: intake section 1c: gas suction section 2: gas transport pipe section 3: separation section 3a: gas introduction section 3b: gas exhaust section 3c: granular material exhaust port section 4: lid 5: air passage blocking section 5': blocking plate 5a: open hole section 5b: blocking section 7: granular material storage section
11 Hinge part
50 Granular material

Claims (6)

a gas supply pipe extending from the gas supply pipe for supplying gas to the granular material; and a separation section provided in the gas supply pipe for introducing gas containing the granular material and centrifuging the gas and the granular material. The separation section is comprised of a centrifuge container having an upper portion provided with a gas inlet portion for introducing the gas containing the granular material and a gas outlet portion for discharging the gas obtained by centrifuging the granular material, and a lower portion provided with a granular material outlet portion for discharging the granular material that has been centrifuged. The granular material outlet portion is provided with a lid that is closed by the intake of air from the gas supply pipe, and when the lid is closed, the granular material is piled up in the separation section. The lid is configured to open under its own weight when the intake is stopped. The granular material transport device is further characterized in that the tip of the gas supply pipe is connected to a granular material storage section that stores the granular material, and the granular material storage section is configured to be able to be raised and lowered . The granular material conveying device according to claim 1, characterized in that a flexible pipe is used as the gas conveying pipe section. The granular material conveying device according to claim 1 or 2, characterized in that the intake section or the gas conveying pipe section is provided with an air-blocking section that blocks airflow. A granular material conveying device according to any one of claims 1 and 2, characterized in that the intake section has a gas suction section connected to the gas conveying pipe section, and the gas suction section is provided with an air blocking section that blocks air flow. The granular material conveying device according to claim 4, characterized in that the air passage blocking section is configured by a movable blocking plate having a blocking section that blocks the gas suction section so that it cannot be ventilated and an open hole section that opens the gas suction section so that it can be ventilated. The granular material conveying device according to claim 4, characterized in that the air passage blocking section is configured by a blocking plate having a blocking section that blocks the gas suction section so that it cannot be ventilated and an open hole section that opens the gas suction section so that it can be ventilated. The granular material conveying device according to any one of claims 1 to 5, characterized in that the lid body is pivotally attached so as to be freely opened and closed in the vertical direction via a hinge portion provided in the vicinity of the granular material discharge port.

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