JP2555777B2 - Conveying device and conveying method - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a conveying device and a conveying method for conveying an object to be conveyed by an endless conveying belt such as a belt conveyor, and more particularly to powders such as sticky substances, chemicals and chemical products.
The present invention relates to a transport device and a transport method using an endless transport band, which is suitable for bulk transport of particles .

[0002]

2. Description of the Related Art With an endless conveyor belt such as a belt conveyor,
BACKGROUND ART As a device for conveying an object to be conveyed such as powder or granules to a high place, there is known a conveying device having ribs, stripes or other surface protrusions in an endless conveying belt called a "belt conveyor with a crosspiece". There is. In addition, bucket conveyors in which containers are attached to endless chains, etc., and tube type conveyors in which endless chains are arranged in tubes and pipes and a large number of pushing members called flights are attached to the chains are also used to move powder to high places. It is known to convey the object to be conveyed.

[0003]

However, in the former carrying device having surface projections such as crosspieces in the endless carrying belt,
The material of the crosspiece and the endless transfer belt is limited to rubber or vinyl chloride, which can be easily connected with the crosspiece and endless transfer belt with an adhesive, etc. It is difficult to manufacture with a material that has excellent heat resistance, corrosion resistance, and non-adhesiveness (releasability: that is, the ease of separation between the contact surface of the transport means and the transported object), and it is very expensive even if it can be manufactured by integral molding. It becomes unusable and practically unusable. Also,
Even when a belt conveyor made of an iron plate or an alloy steel plate such as stainless steel is pierced by screws or welding, the mounting point is easily damaged due to bending stress at the pulley part, and it cannot be practically used. Therefore, there is a problem in that the material is largely restricted in the carrying device having the surface projection such as a crosspiece in the endless carrying band.

For example, it is granular and has a high temperature (about 60 to 70 ° C.).
When carrying sodium hydroxide and potassium hydroxide, the above rubber and vinyl chloride are inferior in corrosion resistance, and non-adhesive (releasing property) to sodium hydroxide and potassium hydroxide, which have deliquescent properties, is insufficient. The transfer device having a surface projection such as a crosspiece on the endless transfer belt cannot be used in view of the material of the endless transfer belt, etc., and as an alternative means, the inclined transfer angle is about 18 degrees at the time of transferring granular material. I have no choice but to use a flat belt conveyor made of steel or fluororesin.
There is a problem that the transport device is large and the transport efficiency is poor.

On the other hand, the bucket conveyor and the tube type conveyor can be made of stainless steel or the like having excellent heat resistance, corrosion resistance and non-adhesiveness (release property). Spillage, biting of the transported object into the lap gap of the bucket,
In addition, there is a problem that there are many troubles caused by biting into the chain, and even with a tube type conveyor, the transported object may be severely worn, or the transported object may break and its shape may be destroyed. There is a problem.

The present invention has been made in view of the conventional problems as described above, and in a conveying apparatus and a conveying method for conveying an object to be transported by an endless conveying belt such as a belt conveyor, a material such as an endless conveying belt is used. There is no limitation, for example, even if an endless conveyor belt made of a material such as stainless steel or fluororesin is used, the transportation efficiency is not reduced, and the objects to be conveyed are not crushed or spilled. It can be transported, especially for granular materials with strong adhesiveness and adhesion.
An object of the present invention is to provide a transfer device and a transfer method suitable for bulk transfer .

[0007]

That is, the conveying apparatus according to the first aspect of the present invention is designed so that an object to be conveyed is placed in an inclined conveying section.
And a first transport means having an endless transport belt for transporting from the bottom to the top, and a support means movably supported in a plane perpendicular to the moving direction of the inclined transport section of the first transport means, and
A second conveyance provided with a plate-shaped pushing member that supports the object to be conveyed on the endless conveyance belt by touching the lower end of the inclined conveyance section with the upper surface of the endless conveyance belt and cooperates with the endless conveyance belt to convey the object to be conveyed. Means for driving the first transport means and the second transport means,
It is characterized by further comprising drive means for moving the endless conveying belt and the pushing member in the same direction so that the moving speed of the endless conveying belt in the inclined conveying section is faster than the moving speed of the pushing member. .

[0008] The conveying method according to claim 2 of the present invention comprises a first conveying means including an endless conveyor belt for conveying from the bottom to the top in the inclined transporting unit transported object, the inclination of the first transfer means A second conveying unit having a plate-shaped pushing member that supports the conveyed object on the endless conveying belt in the conveying unit and conveys the conveyed object in cooperation with the endless conveying belt; the first conveying unit and the second conveying unit. In the inclined transport section, and a drive means for moving the endless transport band and the pushing member in the same direction in the inclined transport section, the moving speed of the endless transport band in the inclined transport section is higher than the moving speed of the pushing member. Fast and no pushing member
It is characterized in that an object to be conveyed is conveyed while being fluidized in an area sandwiched by the end conveyance belts .

[0009]

[Function] The endless transport belt and the pushing member are the first transport means and the second transport means.
It is divided into transporting means and is independent of each other, and there are no restrictions on rigidity and strength for attaching the pushing member to the endless feeding belt.Therefore, in manufacturing the endless feeding belt and the pushing member, corrosion resistance or separation is required. Since it suffices to consider only the transportation conditions in terms of the material quality of the transported object, such as moldability, they can be manufactured easily and inexpensively. In addition, since the moving speed of the endless transport belt is faster than the moving speed of the pushing member, the transported object is constantly made to flow in the area sandwiched between the plate-shaped pushing member and the endless transport belt, and the peeling operation is always generated to push the member. It is possible to prevent the transported object from adhering to the members and the endless transport belt, and to transport the transported object from the bottom to the top.
In the inclined transport unit , it is possible to prevent the transported object from being strongly intruded into the gap between the endless transportation belt and the pushing member and to be crushed, so that the transportation can be performed smoothly. Further, since the pushing member is movably supported in the plane perpendicular to the moving direction by the supporting means and moves up and down following the endless conveying band, the upper surface of the endless conveying band that moves faster than the pushing member is not flat. Alternatively, even if it moves up and down partially, the endless conveyor belt is not damaged. In addition, since it is easy to strengthen and increase the size of the pushing member to increase the carrying load, it is possible to prevent spillage of the product and carry it efficiently at a steep slope.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The accompanying drawings show an embodiment of the conveying apparatus of the present invention, in which reference numeral 1 is a casing. In the casing 1, a head portion 1b is continuously provided at the upper end of the inclined portion 1a, and a tail portion 1c is continuously provided at the lower end, and an inlet 1d for the conveyed object H is provided on the upper surface of the tail portion 1c and a lower surface of the head portion 1b. The discharge ports 1e are provided respectively. The casing 1
A head pulley 2 and a tail pulley 3 are individually provided on the head portion 1b and the tail portion 1c of the above, and an endless flat conveyor belt (conveying belt) 4 is wound around these pulleys 2 and 3. There is.

The conveyor belt 4 slides on the upper surface of the bottom plate 5 laid in the casing 1 to carry the object H to be conveyed from the bottom to the top, and is guided by the return roller 6 provided in the casing 1 to return to the bottom. It is configured. A cleaner 8 is provided on the inclined portion 1 a of the casing 1. The cleaner 8 cleans the conveyor belt 4 on its return side. The pulleys 2 and 3, the conveyor belt 4, the bottom plate 5 and the like constitute the first conveying means A. This first transport means A
Receives the object H to be conveyed, which has been introduced into the casing 1 from the introduction port 1d, conveys it to the head portion 1b by the conveyor belt 4, and ejects it from the ejection port 1e. The tail pulley 3 is movable back and forth (left and right in FIG. 1), and its fixing position is adjusted by an adjusting device 9 to change the tension of the conveyor belt 4 and prevent meandering.

A pair of head chain wheels 11, 11 are provided on the left and right sides of the head portion 1b and the tail portion 1c of the casing 1.
11 and a pair of tail chain wheels 12, 12 are individually provided. An endless chain 13 is wound around the pair of left and right chain wheels 11 and 12. Each chain 13 includes the same number of brackets 14, respectively. The brackets 14 are attached to the inner side surfaces of the pair of chains 13, 13 so as to face each other at a predetermined interval.

The bracket 14 is a flight (pushing member) 1
5 is attached to the chain 13 and has a slide groove 14a. In the flight 15, the left and right side edges are fitted into the slide grooves 14a, 14a, and the pins 16 are inserted into the long holes 15a, 15a formed on both sides in the vertical direction in FIG. It is built between 14 and 14. With this configuration, the flight 15 can move freely in the plane perpendicular to the moving direction of the chain 13 by the gap of the elongated hole 15a, and the lower end of the flight 15 touches the upper surface of the conveyor belt 4 in the transport section between the pulleys 2 and 3. Let me move. The bracket 14 has
A pin cover 17 is attached to cover the pin 16. The pin cover 17 prevents dust from entering the pin 16 portion. The bracket 14, the pin 16 and the long hole 15a are
It constitutes a means for supporting the flight 15.

Above the left and right sides of the bottom plate 5, chain guides 18 and 19 are fixedly provided inside the casing 1. The chains 13 and 13 are guided by the chain guides 18 and 19 to move from the bottom to the top of the transport unit, and are guided by the return chain wheel 21 provided in the casing 1 to return to the bottom. Each flight 15 moves the transport section from the bottom to the top by the chains 13 and 13 and transports the object H to be transported in cooperation with the conveyor belt 4, and the second chain together with the chain wheels 11 and 12, the chain 13, and the like. It constitutes the transport means B.

The chain guide 19 is provided with its lower surface 19a slightly separated from the bottom plate 5, and guides the upper side surface of the conveyor belt 4. Further, the chain guide 19 prevents the transported object H from laterally spilling on its side surface 19b. The tail chain wheel 12 is also provided so as to be movable back and forth, and its fixed position is adjusted by the adjusting device 22 so that the chain 1
Change the tension of 3 and 13. A pair of chain covers 20 and 20 for preventing the carried object H from being caught in the chain 13 are provided in a portion of the chain 13 below the head pulley 2.

Reference numeral 23 is an electric motor with a speed reducer. The electric motor 23 is directly connected to the rotary shaft 24 of the head pulley 2. The reduction shaft sheaves 26, 27
Are individually fixed, and their reduction gears 2
A chain 28 is wound around 6, 27. With motor 2 3 rotates in the clockwise direction of the head pulley 2 in FIG. 1 via a rotary shaft 24, the head chain via a rotating shaft 24, the deceleration sprocket wheel 26, chain 28, the speed reduction chain wheel 27, the rotary shaft 25 The wheels 11, 11 are rotated in the same direction as the head pulley 2.

The decelerating sheaves 26 and 27 reduce the rotational speed of the rotary shaft 25 to make the rotational peripheral speed of the head sheaves 11 and 11 slower than the rotational peripheral speed of the head pulley 2 so that the moving speed of the conveyor belt 4 is reduced. Slightly higher than the moving speed of the flight 15. The electric motor 23, the rotating shafts 24 and 25, the reduction gear trains 26 and 27, and the like constitute a driving means C. In addition,
The reduction chain wheels 26, 27 and the chain 28 form a speed change mechanism, and it is preferable that the speed change mechanism is a variable type that can change the speed change ratio within a range of deceleration, uniform speed, and speed increase.

Next, the operation of the carrying apparatus of the present invention constructed as described above will be described. Now, when the object H to be conveyed is introduced from the introduction port 1d, it drops onto the conveyor belt 4 and advances to the inclined portion 1a, that is, the inclined conveying portion . When entering the inclined portion 1a, the transported object H on the conveyor belt 4 slides to the flight 15 side below the inclined surface, is loaded in the space formed by the flight 15 and the conveyor belt 4, and spills on the side surface 19b of the chain guide 19. It is transported while being prevented. At this time, since the conveyor belt 4 moves slightly faster than the flight 15, the transported object H always flows in the area sandwiched by the plate-shaped flight 15 and the conveyor belt 4 as shown by the white arc in FIG. As a result, the peeling operation always occurs, and the transported object H is prevented from adhering to the flight 15 and the conveyor belt 4, and the transported object H does not strongly enter between the lower end of the flight 15 and the conveyor belt 4. The wear and damage of the transported object H are prevented. Also, flight 15
Even if the upper surface of the conveyor belt 4 moving faster than that is not flat or partially moves up and down, the conveyor belt 4 moves up and down following this, so that the conveyor belt 4 is damaged by the flight 15. That's not it. The flight 15 which is independent of the conveyor belt 4 and is easily strengthened receives the load of the conveyed object H together with the conveyor belt 4, and the side surface 19b of the chain guide 19 prevents the conveyed object H from spilling, so that the steeply inclined conveying is performed. it can.

The transported object H carried to the head portion 1b in this way falls from the conveyor belt 4 at the head pulley 2 and is discharged from the discharge port 1e. The flight 15 that has carried the conveyed object H in cooperation with the conveyor belt 4 is suspended by the chains 13 and 13 and moves on the return side, and then turns around the tail chain 12 and rides on the conveyor belt 4. .

The conveying device of the present invention is mainly used in the field of inclined conveying which requires heat resistance, chemical resistance and non-adhesiveness (release property). In this case, the conveyor belt 4 is used.
The flight 15 and the like are made of a material having excellent heat resistance, chemical resistance, and non-adhesiveness, for example, stainless steel, fluororesin, or the like, or a fluororesin lining is applied.

The desired relative speed difference of the moving speed of the moving speed and the flight 15 of the conveyor belt 4 in the inclined <br/> conveyor portion inclined conveying upward the conveyed object H from the bottom, the physical properties of the conveyed object H, the shape , Size and conveyor belt 4 and flight 15
It depends on the material, the inclination angle of the conveying section, and the like, and if necessary, the amount of wear of both materials due to the friction between the lower surface of the flight 15 and the upper surface of the conveyor belt 4 is taken into consideration and determined by experiments or the like.

Moving speed of conveyor belt 4 and flight 1
The maximum speed difference of the moving speed of 5 pushes up the transported object H.
Flight 15 moves backward relative to
(Because of the relative advance of the belt 4)
The transported object H rotates on the inclined surface of the belt 4 and, as a result, the transported object H
The difference in speed before the occurrence of obstacles such as wear and abrasion on the conveyed object H
To be done. This maximum speed difference cannot exceed 0.3m / sec.
Few.

[0023] In the above embodiments, freely floating flight 15 above and below have been configured to move touch the underneath edge on the upper surface of the conveyor belt 4, the conveyed object H kind or shape, or size Depending on the size and the like, the flight 15 can be moved away from the conveyor belt 4.

In the embodiment shown in the figure, the first transporting means A is provided inside the second transporting means B in a side view, but the entire second transporting means B is provided above the first transporting means A. , The flight 15 is circulated in the direction opposite to the conveyor belt 4 in the vertical plane in which the conveyor belt 4 circulates, so that the lower side of the chains 13, 13 is moved along the conveyor belt 4 from bottom to top. You can also do it.
In short, the flight 15 only needs to move along with the conveyor belt 4 in the transport section to transport the transported object H, and the movement of the flight 15 at other locations is arbitrary as long as it does not hinder the transportation of the transported object.

Further, the driving means C is not limited to the one shown in the figure,
For example, an electric motor is provided in each of the first conveying means and the second conveying means B, and the rotation speed of each electric motor is directly controlled, or each transmission provided in each electric motor is controlled to change the rotation speed. Can also be

[0026]

The transporting apparatus and the transporting method of the present invention are configured as described above, and since the endless transport belt and the pushing member are independent of each other, the rigidity and strength for attaching the pushing member to the endless transport belt, etc. The constraint of is completely eliminated. Therefore,
In producing the endless conveyor belt and the pushing member, it is necessary to consider only the conveying conditions such as corrosion resistance and releasing property in terms of the material of the conveyed object, and they can be easily and inexpensively produced. Further, since the strength of the pushing member can be easily strengthened, the burden of feeding the pushing member can be increased, and the pushing member can be fed more quickly and efficiently with a steep slope. In addition, to prevent the adhered object from adhering to the pushing member or the endless conveying band by constantly flowing the conveyed object in the area sandwiched between the plate-shaped pushing member and the endless conveying band to always cause the peeling operation. Therefore, it is possible to carry powder particles with high adhesiveness such as sodium hydroxide.
Can be sent . In addition, in the slanted conveying portion that slantly conveys the granular conveyed object from the bottom to the top, the conveyed object does not strongly enter between the endless conveying belt and the pushing member and is not crushed. Furthermore, since the pushing member is supported by the supporting means so as to be free to move in a plane perpendicular to the moving direction and moves up and down following the endless conveying belt, the upper surface of the endless conveying belt that moves faster than the pushing member is not flat. Even if it moves up or down partially, the endless conveyor belt is not damaged.

[Brief description of drawings]

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

FIG. 2 is a sectional view of a portion (II-II) in FIG.

FIG. 3 is a cross-sectional view showing a conveyed state of an object to be conveyed.

FIG. 4 is a cross-sectional view showing how the flight is attached to the chain and how the chain is guided by the chain guide.

FIG. 5 is a cross-sectional view showing how the flight is attached to the chain.

[Explanation of symbols]

4 Conveyor Belt (Endless Transport Belt) 14 Bracket (Supporting Means) 15 Flight (Pushing Member) 15a Long Hole (Supporting Means) 16 Pins (Supporting Means) A First Conveying Means B Second Conveying Means C Driving Means H Conveyed Objects

Claims (2)

(57) [Claims] 1. An inclined transfer section for transferring an object to be transferred from bottom to top.
A first conveying means having an endless conveying belt for conveying to
An object to be conveyed on the endless conveying belt is supported by a supporting means so as to be free to move in a plane perpendicular to the moving direction of the inclined conveying portion of the conveying means, and the lower end of the inclined conveying portion is brought into contact with the upper surface of the endless conveying belt. Endless transport in the inclined transport section by driving the second transport means including a plate-shaped pushing member that transports the transported object in cooperation with the endless transport belt and the first transport means and the second transport means. A transporting device comprising: a drive unit that moves the band moving speed faster than the moving speed of the pushing member to move the endless transport band and the pushing member in the same direction. 2. An object to be conveyed is inclined from above to below in an inclined conveying section.
A first conveying means having an endless conveying belt for conveying to
A second conveying means having a plate-shaped pushing member for supporting an object to be conveyed on the endless conveying belt in the inclined conveying portion of the conveying means and conveying the conveyed object in cooperation with the endless conveying belt; and the first conveying means. the second transport means is driven, the conveying device and a pusher member and the endless conveyor belt in the inclined conveyor section; and a driving means for moving in the same direction, the moving speed of the endless conveyor belt in the inclined transport section of the pusher member Pushing faster than moving speed
A carrying method characterized in that a carried object is carried while flowing in an area sandwiched between a member and an endless carrying band .