JPH06100173A - Transporting device - Google Patents

Abstract

PURPOSE:To provide a transporting device by which a material to be transported from a transporting port can be transported by a necessary quantity at all times. CONSTITUTION:A rotary drum 10 is supported rotatably in a casing 1, and plural partition chambers 11 are formed along the outer periphery of the rotary drum 10. A supply port 20 is arranged above the casing 1 so as to supply a material F to be transported to the partition chambers 11, and an air blowing port 24 to send air forcibly to the partition chambers 11 and a transporting port 26 to transport the material F to be transported from the partition chambers 11, are arranged on both lower sides of the casing 1. A suction pump 32 to put the inside of the partition chambers 11 in a negative pressure condition by sucking the air in the partition chambers 11, is connected to a position of the casing 1 facing to the partition chambers 11 of the rotary drum 10, and after the inside of the partition chambers 11 is put in the negative pressure condition by means of the suction pump 32, the material F to be transported is housed in the partition chambers 11.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a transport device such as a rotary feeder for transporting a powdery material to be transported such as powder cement by forced air flow.

[0002]

2. Description of the Related Art A conventional rotary feeder of this type is known, for example, as shown in Japanese Utility Model Application No. 52-58161.

In this conventional structure, a rotary drum is rotatably supported in the casing, and a plurality of partition chambers are formed on the outer circumference of the rotary drum. The partition chamber of the rotary drum is defined by the inner cylinder and a plurality of partition plates extending radially in the outer circumference thereof at predetermined intervals so as to be opened in the outer circumference direction and both sides. The outer peripheral opening of the partition chamber is closed by the casing.

Further, a supply portion is provided on the upper part of the casing, and a material to be transported (for example, powder) is supplied from this supply portion through the outer peripheral opening of the partition chamber into the partition chamber. Blower and transport ports are provided on both sides of the lower part of the casing,
Air is pressure-fed into the partition chamber from the blower port, and the transported object in the partition chamber is transported from the transport port by the forced ventilation force.

[0005]

However, in this conventional rotary feeder, after the powder in the partition chamber is transported outward from the transport port, the empty partition chamber reaches the supply section again, Even if the powder is supplied from the supply unit, there is a problem that the supply amount does not reach the required amount. That is, the amount of powder transported from the transport port may not reach the required amount.

The present invention has been made by paying attention to the problems existing in such a conventional technique, and an object thereof is to always provide a required amount of a transported object transported from a transportation port. It is to provide a transportation device capable of transportation.

[0007]

In order to achieve the above object, in the first aspect of the invention, after the object to be transported is accommodated, the transported object is transported to a movable container for transporting the object to a predetermined position. The gist of the invention is to provide a negative pressure generating means for bringing the moving container into a negative pressure state in the preceding process of accommodating an object.

According to the second aspect of the invention, the rotary drum is rotatably supported in the casing, a plurality of partition chambers are formed along the outer periphery of the rotary drum, and the transported object is supplied into the partition chamber at the upper part of the casing. In the transportation apparatus, a supply unit is provided for controlling the rotation of the rotating drum, and a ventilation port for pressure-feeding air into the partition chamber and a transportation port for transporting the transported object from the partition chamber are provided on both sides of the lower portion of the casing. Negative pressure generating means for sucking air in the partition chamber to bring the partition chamber into a negative pressure state is provided at a casing position corresponding to the partition chamber, and the negative pressure means causes the inside of the partition chamber to be in a negative pressure state. The gist of the present invention is that the package is configured to be housed in the compartment.

[0009]

According to the first aspect of the invention, in the preceding step of accommodating an object to be transported, the negative pressure generating means brings the inside of the moving container into a negative pressure state, and thereafter, the object to be transported is accommodated in the moving container. At this time, since the inside of the moving container is in a negative pressure state, the transported object is quickly housed in the moving container.

According to the second invention, the negative pressure generating means is supplied at the same time when the rotary drum is rotated. At this time, the partition chamber of the rotary drum corresponding to the negative pressure generating means is in a negative pressure state. Then, when the rotary drum is further rotated in this state and the partition chamber held in the negative pressure state reaches the supply portion, both side openings of the partition chamber held in the negative pressure state are opened. From that, it becomes atmospheric pressure all at once.
At this time, the transported objects are accommodated in the partition chamber all at once as the atmospheric pressure changes. That is, the transported object is positively accommodated so as to be sucked into the partition chamber. Therefore, the amount of the transported object accommodated in the partition chamber is always substantially the required amount.

Thereafter, the transported object stored in the partition chamber is fed to the lower portion of the casing as the rotating drum rotates. After that, in the lower part of the casing, air is pressure-fed into the compartment through the opening on one side of the compartment from the air outlet, and the transported object in the compartment is transported from the opening on the other side of the compartment to the transportation opening by the forced air flow. To be done.

At this time, the transport amount of the transported object is a substantially required transport amount because the transported objects accommodated in the partition chamber are substantially constant.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a rotary feeder embodying the present invention will be described in detail below with reference to the drawings.

As shown in FIGS. 1 and 2, the casing 1
Is composed of a substantially cylindrical body 2 and a pair of side plates 4 and 5 fixed to both sides of the body 2 by a plurality of bolts 3. The rotating shaft 6 has a bearing 7 between the side plates 4 and 5 of the casing 1.
Is rotatably supported via a seal 8 and a seal 8 is interposed between the outer periphery of both ends thereof and the side plates 4 and 5. The sprocket 9 is fixed to the end of the rotary shaft 6 and is operatively connected to a drive motor (not shown) via a chain or the like.

A rotary drum 10 as a movable container is fixed to the rotary shaft 6 in the casing 1, and a plurality of partition chambers 11 having a substantially fan-shaped cross section are provided along the outer periphery of the rotary drum 6. Explaining the structure of the rotary drum 10, the pair of side plates 12 are fixed to the rotating shaft 6 at a predetermined interval, and the inner cylindrical body 13 is fixed to the outer periphery of the side plates 12. The outer cylindrical body 14 is arranged outside the inner cylindrical body 13 at a predetermined interval.

A plurality of partition plates 15 are provided on both the cylindrical bodies 13 and 14.
The partition chamber 15 is fixedly arranged at predetermined intervals so as to extend in the radial direction, and the partition chamber 15 and the two cylindrical bodies 13 and 14 divide and form the partition chamber 11 so as to open only on both sides. In addition, in this embodiment, as shown in FIG. 3, in particular, both cylinders 13 and 14 of the rotary drum 10 and the partition plate 15 are provided on the surface of the metal core 16 and the partition chamber 11 side of the core 16. It is composed of the formed synthetic resin coating layer 17.

The inner peripheral groove 18 is formed on the inner surfaces of the side plates 4 and 5 of the casing 1, and both ends of the inner cylindrical body 13 of the rotary drum 10 are slidably fitted in the inner peripheral groove 18. . The outer peripheral groove 19 is formed on the inner surfaces of the side plates 4 and 5, and both ends of the outer cylindrical body 14 of the rotary drum 10 are slidably fitted in the outer peripheral groove 19. Due to the fitting configuration of the grooves 18 and 19 and the cylindrical bodies 13 and 14, both sides of each partition chamber 11 are closed in a substantially airtight state.

The supply port 20 is formed in the upper portion of the casing 1, and when the partition chamber 11 of the rotary drum 10 is rotated to the upper position of the casing 1, both sides of the partition chamber 11 are opened toward the supply port 20. To be done. The hopper 21 is fixed to the upper portion of the supply port 20 by a plurality of bolts 22, and a powdery material to be transported F such as powder cement is stored inside the hopper 21.
In this embodiment, the supply port 20 and the hopper 21 form a supply unit. When the partition chamber 11 comes to the upper part of the casing 1 as the rotary drum 10 rotates, the transported object F in the hopper 21 enters the partition chamber 11 from the supply port 20 through both side openings of the partition chamber 11. Supplied.

A guide plate 23 having a substantially chevron cross section is arranged in the hopper 21 so as to cover the outer peripheral upper surface of the rotary drum 10. The guide plate 23 prevents the powdery material to be transported F from staying on the outer peripheral upper surface of the rotating drum 10,
The rotating drum 10 is guided and guided to both sides. Seal plate 3
1 is arranged in the upper part of the casing 1 so as to be capable of sliding contact with the outer peripheral surface of the rotary drum 10, and the transported object F in the hopper 21 leaks into the gap between the outer peripheral surface of the rotary drum 10 and the inner peripheral surface of the casing 1. Is prevented.

A circular blower port 24 is formed in one side plate 4 at the lower part of the casing 1, and a blower pipe 25 is fixedly connected to the outside thereof. Long hole arc-shaped transport port 26
Is formed on the other side plate 5 in the lower part of the casing 1, and a transport pipe 27 is connected and fixed to the outside thereof. Further, as is clear from FIGS. 2 and 4, the cross-sectional area of the blower port 24 is substantially the same as the cross-sectional area of the partition chamber 11, and the cross-sectional area of the transport port 26 is approximately three times the cross-sectional area of the partition chamber 11. Is configured to be. Then, as the rotary drum 1 rotates, the transported object F stored in the partition chamber 11 is transferred to the casing 1
When the sheet is fed to the lower position of the partition chamber 11, both sides of the partition chamber 11 are opened toward the blower port 24 and the transport port 26.

A blower (not shown) is connected to the blower pipe 25, and the blower pipe 25 and the blower port 24 are fed from the blower with the partition chamber 11 rotated to a lower position of the casing 1.
Air is pumped into the partition chamber 11 through the opening on one side of the partition chamber 11. Then, due to the forced ventilation force caused by the pressure feeding of the air, the transported object F in the partition chamber 11 is moved to the partition chamber 11
From the opening on the other side, it is transported into the transport pipe 27 through the transport port 26.

The air vent port 28 is formed in one side plate 4 of the casing 1 so as to communicate with the partition chamber 11 on the idle side of the rotary drum 10. The air vent pipe 29 is connected to the outside of the air vent port 28 so as to extend obliquely upward, and a strainer 30 is provided in the middle thereof. A suction pump 32 is connected to the air vent pipe 29, and the air vent pipe 29 and the air vent port 2 are connected by the suction pump 32.
Air is sucked from the inside of the partition chamber 11 on the idle side via 8 to bring the inside of the partition chamber 11 into a negative pressure state. In the present embodiment, the air vent port 28, the air vent tube 29, and the suction pump 32 constitute negative pressure generating means.

Next, the operation of the rotary feeder constructed as described above will be described. Now, in this rotary feeder, when a drive motor (not shown) is started,
The rotational force is transmitted to the rotary shaft 6 via the chain and the sprocket 9, and the rotary drum 10 is rotated counterclockwise in FIG. As a result, in the upper part of the casing 1, the powdery material to be transported F in the hopper 21 is supplied into the partition chamber 11 through both side openings of the partition chamber 11 located above the supply port 20.

At this time, since the outer peripheral upper surface of the rotary drum 10 is covered with the guide plate 23 having a substantially mountain-shaped cross section,
The transported object F does not stay on the outer peripheral upper surface of the rotary drum 10, and it is possible to prevent the rotation of the rotary drum 10 from being hindered. Further, since the transported object F in the hopper 21 is smoothly guided and guided to the opening portions on both sides of the partition chamber 11 by the inclined surface of the guide plate 23, the transported object F is efficiently supplied into the partition chamber 11. can do.

Thereafter, as the rotary drum 10 rotates, the transported object F supplied into the partition chamber 11 is fed to the lower portion of the casing 1. Further, in the lower part of the casing 1, the air supplied from a blower (not shown) is
5 and the air outlet 24, the partition room 11 located below
The pressure is fed into the partition chamber 11 from the one side opening. Then, due to the forced wind force associated with the pressure-feeding of the air, the transported object F in the partition chamber 11 is transported from the other side opening of the partition chamber 11 into the transport pipe 27 through the transport port 26.

At this time, the partition chamber 11 of the rotary drum 10
However, since the inner cylinder body 13, the outer cylinder body 14 and the plurality of partition plates 15 are partitioned and formed so as to open only on both sides, the air that is pumped into the partition chamber 11 is divided into the partition chambers. 1
There is no danger of leaking out from 1. That is, unlike the above-mentioned conventional case, the outer peripheral direction of the partition chamber 11 is completely closed by the outer cylindrical body 14, and the partition chamber 11 has a perfect tubular shape, so that forced forced wind force due to the pressure feeding of the air is generated. Partition room 11
The object F can be efficiently operated inside, and the transported object F in the partition chamber 11 can be efficiently and quickly transported.

Further, in this embodiment, the grooves 18 and 19 formed in the side plates 4 and 5 and the cylindrical bodies 13 and 1 of the rotary drum 10 are used.
Due to the fitting configuration with 4, the both sides of the partition chamber 11 are closed in a substantially airtight state. Therefore, it is possible to reliably prevent air leakage between the both side openings of the partition chamber 11 and the both side plates 4 and 5, and it is possible to more efficiently transport the transported object F in the partition chamber 11. .

Further, in particular, the fitting configuration of the inner circumferential groove 18 and the inner cylindrical body 13 can prevent the transported object F from leaking from both sides of the partition chamber 11 to the rotary shaft 6 side. Therefore, it is possible to reliably prevent the leaked transported object F from entering the bearing 7 and hindering the rotation of the rotating shaft 6.

Further, in this embodiment, as shown in FIG. 4, the transportation port 26 is formed in the shape of an arc having a long hole, and its cross-sectional area is approximately three times that of the ventilation port 24 and the partition chamber 11. It is set. Therefore, as the rotary drum 10 rotates, the partition chamber 11 accommodating the transported object F is placed in the casing 1.
While approaching or passing through the lower part of the partition chamber 11, while one side part of the partition chamber 11 partially corresponds to the blower port 24, the entire other side part of the partition chamber 11 is opened to the transport port 26. It becomes a state. That is, the air from the air outlet 24 is separated by the partition chamber 1.
Even if it acts a little on the inside of 1, the whole other side part of the partition chamber 11 is opened to the transport port 26, so that the transported object F inside the partition chamber 11 from the other side part where the whole is opened. Can be easily transported to the transport port 26 side. Therefore, it is not necessary to send a large amount of air under pressure from the blower port 24, and the transported object F can be effectively transported with a small ventilation force.

After that, when the partition chamber 11 in which the transportation of the object F to be transported has been completed is idle-fed upward from the lower part of the casing 1 as the rotary drum 10 rotates, one side of the partition chamber 11 is aired. It corresponds to the outlet 28. Then, in this corresponding state, the suction pump 32 sucks air from the inside of the partition chamber 11 through the air vent pipe 29 and the air vent port 28,
The inside of the partition chamber 11 is brought to a negative pressure state, and the transported object F in the suction air is filtered by the strainer 30.

Therefore, when the transported object F is supplied again into the partition chamber 11 above the casing 1, a required amount of the transported object F is quickly and accurately supplied into the partition chamber 11 in the negative pressure state. It

That is, the partition chamber 1 held in a negative pressure state
When 1 reaches the supply section 20, the inside of the partition chamber 11 is brought to atmospheric pressure all at once because both side openings are in an open state. At this time, the transported objects are accommodated in the partition chamber all at once as the atmospheric pressure changes. That is, the transported object F is positively accommodated so as to be sucked into the partition chamber 11. Therefore, the transported object F accommodated in the partition chamber 11 is always the required amount.

As a result, the transport amount of the transported object F transported from the transport port 27 to the outside is always the required amount. Further, as described above, since the both sides of the partition chamber 11 are closed in a substantially airtight state due to the fitting configuration of the grooves 18 and 19 and the cylindrical bodies 13 and 14, the inside of the partition chamber 11 is surely subjected to negative pressure. The state can be brought into a state, and the supply efficiency of the transported object F into the chamber 11 can be further improved.

Further, in this embodiment, as shown in FIG. 2, an air vent pipe 29 is connected to the outside of the air vent port 28 so as to extend obliquely upward. Therefore, when the operation of the rotary feeder is stopped, the transported objects F accumulated on the strainer 30 are smoothly dropped and collected into the partition chamber 11 through the inclined portion of the air vent pipe 29 without any trouble.

The present invention is not limited to the above-described embodiment, but is embodied in the partition chamber 11 formed in the rotary drum 10 for rotating the movable container, without departing from the spirit of the invention. Alternatively, it may be embodied as a conveyor type container that moves linearly.

[0036]

Since the present invention is configured as described above, it has an excellent effect that the transported object transported from the transportation port can be always transported in a required amount.

[Brief description of drawings]

FIG. 1 is a sectional view showing an embodiment of a rotary feeder embodying the present invention.

FIG. 2 is a cross-sectional view taken along the vertical line in the approximate center of FIG.

FIG. 3 is a partial cross-sectional view showing an enlarged part of a rotary drum.

FIG. 4 is an explanatory diagram showing a correspondence relationship between a ventilation port and a transportation port in a partition chamber.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Casing, 10 ... Rotating drum as a moving container, 11 ... Partition chamber, 13 ... Inner cylinder, 14 ... Outer cylinder, 15
... Partition plate, 20 ... Supply port that configures the supply unit, 21 ... Hopper that configures the supply unit, 24 ... Blower port, 26 ... Transport port, 2
8 ... Air vent port constituting negative pressure generating means, 29 ... Air vent pipe constituting negative pressure generating means, 32 ... Suction pump constituting negative pressure generating means, F ... Transported object.

Claims (2)

[Claims] 1. A negative pressure for causing a negative pressure in the moving container when the object is transported and then is transported to a predetermined position in a moving container for transporting the object to a predetermined position. A transportation device comprising a generating means. 2. A supply for supporting a rotating drum rotatably in a casing, forming a plurality of partition chambers along the outer periphery of the rotating drum, and supplying an object to be transported into the partition chamber at an upper part of the casing. In the transport device, which is provided with a portion, a blower port for pressure-feeding air into the partition chamber on both lower sides of the casing, and a transport port for transporting an object to be transported from the partition chamber, corresponding to the partition chamber of the rotating drum. At the casing position
A negative pressure generating means for sucking air in the partition chamber to bring the partition chamber into a negative pressure state is provided, and after the negative pressure means causes the partition chamber to have a negative pressure state, the transported object is accommodated in the partition chamber. A transportation device characterized by being configured in.