JPH0735425U - Belt conveyor cleaner - Google Patents

Abstract

(57) [Summary] [Purpose] To provide a cleaner for a belt conveyor which can prevent clogging of a chute and has a high brush cleaning efficiency. [Structure] The brush roll 1 is formed as a hollow roll,
A jet nozzle hole 5 for jetting compressed air to the brush roll 1.
Are provided, a sprocket wheel 9 provided at one end thereof is provided, and compressed air is supplied to the hollow portion at the other end of the brush roll 1 via a swivel joint. Then, the sprocket wheel 9 is rotated by the rotation driving means. [Effect] Unlike the conventional water spray nozzle type cleaner, the clogging of the chute does not occur and the cleaning efficiency of the brush roll is good.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a belt conveyor cleaner that removes deposits on a conveyor belt with a rotating brush roll.

[0002]

[Prior art]

 A great number of cleaners have been conceived and used for removing deposits on conveyor belts that convey loose materials, powders, and the like. However, these cleaners do not completely remove deposits, wear the conveyor belt quickly, wear the conveyor belt prematurely, deposit deposits on the contact parts, and significantly reduce the removal function early. Although it is possible to solve all of the problems such as doing, it has not been done yet.

In recent years, there has been considered a cleaner that has a high function of removing deposits without removing the abrasion of the conveyor belt so as to remove deposits with a rotating brush. As such, the technique disclosed in Japanese Utility Model Laid-Open No. 2-34515 is disclosed. In this structure, a large number of water spray nozzles are provided on the outer periphery of a rotating brush roll, and a water passage communicating with the spray nozzles is provided inside the brush roll and the roll shaft. Then, it is expected that the brush roll will be rotated to remove the deposits on the conveyor belt and that the surface of the brush and the conveyor belt will be washed with the water spray from the water spray nozzle.

[0004]

[Problems to be solved by the device]

 However, the rotary brush roll type cleaner has the following problems. (1) In particular, when powder is conveyed by a belt conveyor, addition of water into the powder makes it difficult to convey and causes equipment failure, so its use is limited. That is, the water adhering to the conveyor belt drips onto the chute, and the powder adhering to or accumulating in the chute becomes sludge-like, clogging the chute and stopping the equipment. In addition, this drip moisture accelerates the corrosion of the iron frame. (2) If the equipment stops due to a clogging of the chute, the conveyor belt will be worn if the rotation of the rotating brush roll type cleaner is not stopped. Therefore, a sequence circuit is provided to stop the rotation of the rotating brush roll type cleaner when the equipment stops. There must be.

[0005]

[Means for Solving the Problems]

 The present invention solves the above problems by the following cleaners. The first cleaner is a belt conveyor cleaner that removes deposits on the belt by rotating the roll by means of roll rotating means with the brush planted on the outer periphery of the roll in contact with the conveyor belt. It is formed as a roll, and the roll is provided with a plurality of air ejection ports for ejecting compressed air from the hollow portion to the outside of the circumferential surface of the roll, and an air introduction port is provided at the center of at least one roll shaft end. It is characterized in that a compressed air pipe is connected through a swivel joint.

The second cleaner is a belt conveyor cleaner that removes deposits on the belt by rotating the roll by the roll rotating means in a state where the brush planted on the outer circumference of the roll is in contact with the conveyor belt. The roll is formed as a hollow roll, and a plurality of air ejection ports for ejecting compressed air from the hollow portion to the outside of the circumferential surface of the roll are provided in the roll at equal intervals in the axial direction of the roll. The air introducing pipe having a plurality of rows of air ejecting ports arranged in the axial direction at the same intervals as the air ejecting ports is inserted, and the air introducing pipe is rotatably attached to the brush roll. It is characterized by connecting compressed air piping to.

As a means for driving the rotating means for rotating the rolls of these cleaners, there is provided a rotation transmitting means for transmitting a rotational force from the head pulley that suspends the belt to the roll rotating means, or by contacting the return belt. It is possible to provide a rotating touch roller and a rotation transmitting means for transmitting a rotational force from the touch roller to the roll rotating means.

[0008]

[Action]

 The compressed air flow ejected from the air ejection port of the hollow roll blows off the powder that is clogged between the brushes (brushes) or between the brushes, and also blows off the powder separated from the conveyor belt by the brush from the belt surface. By this blowing action, it is possible to maintain the function of removing the powder adhering to the brush and completely remove the peeling powder from the surface of the conveyor belt. In particular, in the second cleaner, the air outlets of the air inlet tubes inserted in the hollow part of the roll are provided in a row, so only when the air outlets of the air inlet tube and the air outlets of the roll match. Air is ejected from the roll surface. Therefore, if the air jets between the air inlets are directed toward the conveyor belt, the rolls are rotating, and the air outlets of the rolls from which air is blown change one after another while the entire brush of the rolls is cleaned. The air blown from the roll is always blown on the conveyor belt. Therefore, the utilization efficiency of air is extremely improved.

By taking the driving force of the rotating means of the roller in which the brush is planted from the head pulley or the return belt, not only is a special rotational power source unnecessary, but also when the conveyor belt stops, The rotation also stops, preventing unnecessary wear on the brush.

[0010]

【Example】

 Embodiments of the present invention will be described below with reference to the drawings. 1 is an explanatory view of a cleaner for a belt conveyor according to an embodiment of the present invention, and FIG. 2 is a sectional view taken along line AA of FIG. In the figure, reference numeral 1 denotes a hollow cylindrical brush roll, a sleeve 3 for implanting a brush (brush) is fitted around the brush roll, and fixed to the brush roll 1 with a set screw 4. 2 is firmly embedded in the sleeve 3 with a brush. The brush roll 1 and the sleeve 3 are provided with a plurality of ejection nozzle holes 5 which are electrically connected from the hollow inner wall 1a of the brush roll 1 to the outer surface of the sleeve 3. The jet nozzle holes 5 are provided in a plurality of rows (eight rows in the figure) at regular intervals in the axial direction of the brush roll 1 and at equal angular intervals in the circumferential direction. The cross section of the ejection nozzle hole 5 has the shape of an elongated slit. One end of the brush roll 1 is closed, and a first introduction pipe 6 for compressed air is fixed to the other end with its end facing.

Both ends of the brush roll 1 are rotatably supported by rolling bearings 7 and 8, whereby the brush roll 1 is rotatable. The rolling bearings 7 and 8 are attached to a belt conveyor frame (not shown). Reference numeral 9 denotes a sprocket wheel mounted near the end of the brush roll 1, and is rotated by a chain 11 laid between drive sprockets 10 as shown in FIGS. 5 and 6. . The drive sprocket 10 may be attached to the shaft of the head pulley 11 as shown in FIG. 5, or may be attached to the end of the roll shaft of the touch roller 10 rotating in contact with the conveyor belt 12 as shown in FIG. .

In the case of FIG. 6, a support roll 14 is provided below the touch roll 13 so as to sandwich the return conveyor belt 12 b. Then, the touch roll 13 is rotated by the frictional force between the moving conveyor belt 12 b and the touch roll 13, and the sprocket wheel 9 is rotated via the chain 11. Although the method of taking the rotational driving force of the brush roll 1 from the belt conveyor has been described above, an electric motor or a petroleum prime mover generally used as the rotational driving means may be used.

Also in FIGS. 5 and 6, since the sprocket wheel 9 rotates in the direction opposite to the traveling direction B of the return belt, the brush roll 1 rotates in the direction opposite to the traveling direction B of the return belt. Therefore, the deposits on the conveyor belt 12b can be scraped off efficiently. As described above, when the rotational driving force of the brush roll 1 is obtained from the belt conveyor, the brush roll 1 rotates and stops according to the operation and stoppage of the belt conveyor. Therefore, when the belt conveyor stops, the brush roll rotates. The abrasion of the conveyor belt 12b does not occur. The first introduction pipe 6 is connected to a second introduction pipe 21 which is connected to a compressed air source via a swivel joint (swivel joint) 20.

When the opening or closing valve (not shown) provided in the middle of the second introduction pipe 21 is opened when the transportation of the powdered ore or the like is started by the belt conveyor, the compressed air is compressed by the second introduction pipe 21, It passes through a swivel joint (20) and a first introduction pipe (6), enters the hollow portion (1a) of the brush roll (1), and jets from a large number of jet nozzle holes (5) into the brush (2). The blown air blows off the powder clogged between the brushes 2 or between the brushes, and also blows off the powder separated from the conveyor belt 12b by the brushes 2 from the belt surface to clean the adherend.

FIG. 3 is an explanatory view of a belt conveyor cleaner according to another embodiment of the present invention, and FIG. 4 is a sectional view taken along line BB of FIG. In this embodiment, a long first introducing pipe 60 is inserted into the hollow portion 1a of the brush roll 1, one end of which is held by the bearing 62 on the inner wall of the brush roll 1 on the rolling bearing 7 side, and the other on the rolling bearing 8 side by the other. The end portion is held by the brush roll 1 by the bearing 63. The first introduction pipe 60 is provided with a plurality of jet nozzle holes 61 each having a slender cross section with a narrow cross section at the same interval as the jet nozzle holes 5 of the brush roll 1 in one row along the pipe axis direction. .

When the first introduction pipe 60 is incorporated in the brush roll 1, the ejection nozzle hole 5 of the brush roll 1 is aligned with the ejection nozzle hole 61 of the introduction pipe 60. The direction of the ejection nozzle hole 61 of the first introduction pipe 60 is set by adjusting the connection position of the joints 25a and 25b so that the ejection nozzle hole 61 faces the surface of the return belt 12b when the belt conveyor cleaner is attached. Therefore, when the brush roll 1 is rotated, the row of the ejection nozzle holes 5 of the brush roll 1 corresponding to the ejection nozzle holes 61 of the first introduction pipe 60 is changed one after another.

Other components are omitted because they overlap with the description of FIGS. 1 and 2. When the transport of powdered ore or the like is started by the belt conveyor, the opening / closing valve (not shown) provided in the middle of the second introduction pipe 21 is opened, and the compressed air causes the second introduction pipe 21 and the swivel joint ( Swivel joint) 20 and the first introduction pipe 60. Compressed air is ejected from the ejection nozzle hole 61 of the first introduction pipe 60, while the row of ejection holes 5 of the brush roll 1 is rotating, so that the ejection nozzle hole 61 of the first introduction pipe 60 is When the row of the ejection holes 5 of the brush roll 1 coincides with the position, compressed air is ejected from the ejection holes 5 of the coincident row to the belt surface through the brush 2.

That is, the brushes 2 near the row of the ejection nozzle holes 5 are intermittently blown by the compressed air. The compressed air of the cleaner of this embodiment is jetted from the jet nozzle holes 61 in one row, whereas the compressed air of the cleaner of the above embodiment is jetted simultaneously from the jet nozzle holes 5 in eight rows. The compressed air consumption of the above is much smaller than that of the above-mentioned example cleaner (if the compressed air pressures of both examples are the same, it is 1/8 of the compressed air consumption of the above example cleaners). ).

It has been empirically known that intermittent jetting of compressed air has a greater cleaning effect on deposits than continuous jetting. This effect compensates for the decrease in cleaning power due to the low consumption of compressed air.

[0020]

[Effect of device]

 According to the present invention, the following effects can be obtained. (1) Since compressed air is injected through the brush from the injection nozzle hole, clogging of the chute and corrosion of the equipment frame can be eliminated, unlike the conventional cleaner using a water spray nozzle, and the compressed air can be cleaned. By the action, the deposits on the conveyor belt can be removed and the brush can be cleaned efficiently. (2) Since the adhered matter is not wetted, it is possible to completely remove the adhered matter in the concave portion and the groove portion of the belt.

(3) Since the rotational driving force of the brush roll is obtained from the head pulley shaft or the touch roll of the return belt, a sequence circuit for rotating and stopping the brush roll is not required. (4) According to the fourth invention, the consumption of compressed air can be significantly reduced.

[Brief description of drawings]

FIG. 1 is an explanatory diagram of a belt conveyor cleaner according to an embodiment of the present invention.

FIG. 2 is a sectional view taken along line AA of FIG.

FIG. 3 is an illustration of a belt conveyor cleaner according to another embodiment of the present invention.

FIG. 4 is a sectional view taken along line BB of FIG.

FIG. 5 is a diagram showing an example in which a rotational driving force according to the present invention is obtained from a head pulley.

FIG. 6 is a diagram showing an example in which the rotary power according to the present invention is obtained by a touch roller.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Brush roll 1a Hollow part 2 Brush 5 Jet nozzle hole 6 1st introduction pipe 12 Conveyor belt 20 Swivel joint 21 2nd introduction pipe

Claims (4)

[Scope of utility model registration request] 1. A cleaner for a belt conveyor, wherein a roll is rotated by a roll rotating means in a state where a brush planted on the outer periphery of the roll is in contact with the conveyor belt to remove deposits on the belt, and the roll is formed as a hollow roll. Then, the roll is provided with a plurality of air ejection ports for ejecting compressed air from the hollow portion to the outside of the circumferential surface of the roll, an air introduction port is provided at the center of at least one roll shaft end, and a rotary joint is provided to the air introduction port. A cleaner for a belt conveyor, characterized by connecting compressed air piping. 2. A cleaner for a belt conveyor, wherein a roll is rotated by a roll rotating means in a state where a brush planted on the outer periphery of the roll is in contact with the conveyor belt to remove deposits on the belt, and the roll is formed as a hollow roll. Then, a plurality of air ejection ports for ejecting compressed air from the hollow portion to the outside of the circumferential surface of the roll are provided in the roll at equal intervals in the roll axial direction, and in the hollow portion of the roll, the distance between the air ejection ports provided in the roll and An air introducing pipe having a plurality of rows of air jets arranged in a row in the axial direction at equal intervals is inserted, the air introducing pipe is rotatably attached to a brush roll, and a compressed air pipe is connected to the air introducing pipe. A cleaner for belt conveyors. 3. The cleaner for a belt conveyor according to claim 1, further comprising a rotation transmission means for transmitting a rotational force from a head pulley that suspends a belt to a roll rotation means. 4. The touch roller rotating in contact with the return belt, and the rotation transmitting means transmitting the rotational force from the touch roller to the roll rotating means.
Alternatively, the cleaner for a belt conveyor according to claim 2.