JPH10109731A - Cleaner device for belt conveyor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To increase the effect with which raw material adhered to the belt surface is acraped off, assure an easy replacement of the scraping-off plates, prevent powder from falling off from the return run of belt to eliminate cleaning labor and obtain a clean work environment. SOLUTION: A weight 25 is engaged with and secured to a link 24 so that a galvanized iron 18 in a box 17 makes a sliding contact with the surface of the return run of belt with a continually constant pressing force. As a result, any matter (gypsum for example) adhered to the surface of the belt is scraped off at the upper end of the galvanized iron sheet 18. The galvanized iron sheet 18 is thin and its contact surface is smooth so that it is possible, by setting an appropriate pressing force of the belt, to totally scrape off the adhered gypsum with a certain wear. A sponge 20 prevents occurrence of a unilateral strike of the galvanized iron sheet 18 in the width direction of the belt. The galvanized iron sheet 18 is replaced by removing the weight 25 and pressing down levers 23A and 23B. The box is removed, the galvanized iron sheet 18 is taken out from a groove 16, and another galvanized iron sheet 18j is inserted.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cleaner for a belt conveyor, and more particularly to a cleaner for a belt conveyor for scraping off deposits on a return belt.

[0002]

2. Description of the Related Art In a belt conveyor which conveys a raw material (for example, gypsum) containing about 5 to 20% of water, it is not possible to prevent the raw material attached to the surface of the return belt from falling. That is, the gypsum is still attached to the return belt surface, and the gypsum powder is dropped below the belt during the running of the belt. Therefore, cleaning of the falling powder is troublesome and deteriorates the working environment.

[0003] In order to prevent the powder falling from the return belt, a belt cleaner for scraping off the raw material adhering to the surface of the return belt is provided. This conventional belt conveyor cleaner device is configured as follows. That is, as shown in FIGS. 6 and 7, the scraping member 2 was pressed against the transport surface (front surface) of the return belt (return side belt, lower side belt) 1 from below. The scraping member 2 is composed of two rubber plates 3A and 3B, a shaft 4 and a lever 5.
A and 5B are provided so as to swing freely. These levers 5A and 5B having a shaft 4 fixed at one end are swingably supported by a fixed member (frame or the like) with a shaft 6 as a fulcrum, and a weight (weight) 7 is fixed to the other end. I have. The two rubber plates 3A and 3B are intermediate members 8
Bolts on both sides. The intermediate member 8 is fixed to the shaft 4. Therefore, in this cleaner device, the raw material attached to the belt surface is scraped off at the upper ends of the rubber plates 3A and 3B having a predetermined thickness.

[0004]

However, such a conventional belt conveyor cleaner still has the problem that the gypsum is not easily cut and the gypsum is hard to fall off the belt surface. This is the rubber plate 3A, 3B
The contact end surface is formed of a flat surface of a predetermined width, and since this flat surface has large irregularities due to abrasion, gypsum adheres to a part of the end surface over time and the rubber plate contacts the conveyor belt surface. This is because there is a gap between the surface and the surface.
Further, the rubber plate is made of the same material as the belt, and may be deformed when strongly pressed to reduce the scraping effect. Also, when pressed strongly, it was easy to wear. Further, since the rubber plate is fixed to the intermediate member by bolts, it is troublesome to replace the rubber plate when it is worn.

[0005]

SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a cleaner having a great effect of scraping off raw materials attached to a belt surface. Another object of the present invention is to provide a cleaner device in which a scraping plate can be easily replaced. Another object of the present invention is to eliminate powder dust from the return belt, to save time for cleaning, and to obtain a clean working environment.

[0006]

According to a first aspect of the present invention, there is provided a belt conveyor cleaner for scraping off deposits on the surface of a return belt of a belt conveyor, wherein the cleaner is swingably supported below the return belt. A belt, comprising: a box made of a metal plate or a resin plate, which is inserted into the box and has an upper end slidably in contact with the surface of the return belt. This is a conveyor cleaner device.

According to a second aspect of the present invention, there is provided the belt conveyor cleaner according to the first aspect, wherein a lower end of the blade is supported on a bottom wall of the box via a cushion material.

According to a third aspect of the present invention, the urging member is supported swingably in a vertical plane with an intermediate portion in the longitudinal direction as a fulcrum, and a lever having the box attached to one end thereof. 3. The belt conveyor cleaner according to claim 1, further comprising a weight attached to the other end of the lever.

[0009]

According to the first aspect of the present invention, the upper end of the blade comes into sliding contact with the return belt surface of the belt conveyor, and scrapes, for example, raw materials attached to the return belt surface. in this case,
Since the box is urged upward, the upper end of the blade inserted into the box always comes into sliding contact with the return belt surface. The blade is made of a metal plate or a resin plate, has a great scraping effect, and does not cause the raw material to adhere to the upper sliding surface.

According to the second aspect of the present invention, since the lower end of the blade is supported on the bottom wall of the box via the cushioning material, the blade may be one-sided in its length direction, that is, in the width direction of the return belt. There is no. Therefore, it is possible to completely scrape off the deposits on the belt, and the tip of the blade is not unevenly worn.

According to the third aspect of the present invention, the box is attached to one end of the lever in the longitudinal direction, and by adjusting the weight at the other end, the sliding pressure of the blade can be easily adjusted. Also, the attachment and detachment of the blade from the box is extremely simple.

[0012]

Embodiments of the present invention will be described below with reference to the drawings. 1 to 3 are views showing a belt conveyor cleaner device according to one embodiment of the present invention. As shown in these figures, this cleaner device 10
Is disposed below the return belt 13 of the belt conveyor 12 that transports the gypsum 11. 14 is a pulley for driving the belt, and 15 is a pulley or roller for adjusting the tension.

The cleaner device 10 includes a box 17 having a groove 16 having a predetermined width and a predetermined length, the upper surface of which is open, a galvanized plate (blade) 18 housed in the groove 16 of the box 17, and And a biasing member 19 for biasing toward a constant force. Specifically, the box 17 has a substantially rectangular parallelepiped shape, and a groove 16 having a length corresponding to the belt width is formed on the upper surface of the box 17 so as to extend in the longitudinal direction. The groove 16 is open at the top, and the tin plate 18 is inserted into the groove 16 with its upper end protruding from the groove 16 by a predetermined height. The iron plate 18 is disposed upright on a sponge 20 as a cushion material, and is positioned by a rubber plate 21 which is also inserted into the groove 16. That is, the galvanized steel plate 18 is a thin plate material having a thickness of, for example, about 0.3 mm to 3.2 mm, and its tip (upper end) protrudes from the rubber plate 21 by a predetermined height. Therefore, the upper end portion of the galvanized plate 18 has a predetermined elasticity and is supported so as to be elastically deformable in the thickness direction. The length (width) of the galvanized plate 18 is about the same as the width of the return belt 13.

The rubber plate 21 inserted into the groove 16 has a predetermined thickness, and is made of, for example, a synthetic rubber (for example, SBR) with a built-in ply same as the belt. The rubber plate 21 is inserted back to back to position and fix the galvanized plate 18 in the groove 16.

On the other hand, support shafts 22A and 22B protrude from both ends of the box 17 in the longitudinal direction, and the cross sections of the support shafts 22A and 22B are formed in a polygonal shape (for example, an octagon). I have. Each of the support shafts 22A and 22B is engaged with and supported by a semicircular recess formed on the upper surface of the pair of levers 23A and 23B. That is,
At both ends in the longitudinal direction of the box 17, a support shaft 2 protruding like an ear
2A and 22B are coaxially fixed, and these support shafts 22
A and 22B make the box 17 a pair of levers 23A,
23B. Since the support shafts 22A and 22B are engaged with the recesses, the box 17 is extremely easy to attach and detach. Further, since the support shafts 22A and 22B have a polygonal cross section, rotation about the axes is restricted. In order to prevent rotation, the concave portions engaging with the support shafts 22A and 22B may have a polygonal shape as well.

The pair of levers 23A and 23B are formed of a plate having a predetermined length, and horizontal shafts 24A and 24B serving as fulcrums are fixed to the intermediate portions in the longitudinal direction so as to protrude outward. These horizontal axes 24A, 24
B is arranged coaxially and rotatably supported by a frame member (not shown).

The above-mentioned recesses are respectively formed at one end of the levers 23A and 23B in the longitudinal direction, and the support shafts 22A and 22B of the box 17 are respectively engaged with these recesses. In this case, since the support shafts 22A and 22B have a polygonal cross section, rotation of the box 17 around the support shaft is restricted (it is difficult to rotate). Lever 23A,
At the other end in the longitudinal direction of 23B, these levers 23A,
A link 24 connecting the 23Bs is provided. A plurality of metal weights 25 are locked to the link 24, for example. Each weight 25 has a notch and is locked by being fitted to this link 24,
A and 23B are urged around horizontal axes 24A and 24B. That is, the box 17 supported at one end of the levers 23A and 23B is urged upward by a constant force by the weights 25. Therefore, the urging force can be adjusted by changing the number of the weights 25 or the like.

In the cleaner device 10 having the above-described configuration, the predetermined weight 25 is locked to the link 24 so that the tin plate 18 in the box 17 always slides on the surface of the return belt 13 with a constant pressing force. Touch As a result, the deposits on the surface of the return belt 13, for example, the plaster 11,
8 is scraped off at the upper end thereof, so that a drop or the like on the downstream side does not occur. The tin plate 18 is significantly thinner than the rubber plate 21 and has a smooth contact surface at the tip. Therefore, if the pressing force on the belt 13 is set appropriately,
The attached gypsum 11 can be completely scraped off with a certain amount of wear. Further, in this case, the iron plate 1
Since the lower end of 8 is supported by the sponge 20, there is no occurrence of a one-sided contact in the length direction (belt width direction). It is a matter of course that another member, for example, a cushion material having elasticity can be inserted in place of the sponge 20.

When replacing the galvanized plate 18, the weight 25 can be removed or the lever 23 can be replaced.
The box 17 is lowered by pressing down A and 23B.
If the galvanized plate 18 is taken out from the groove 16 of the lowered box 17 and another galvanized plate 18 is inserted, the replacement is completed. At this time, the work is easier if the rubber plate 21 is taken out. Therefore, there is no need to perform fastening and release of bolts as in the related art. Alternatively, this operation may be performed by removing the box 17 itself from the levers 23A and 23B. Furthermore, replacement can be performed easily and reliably.

FIGS. 4 and 5 show another embodiment of the cleaner device according to the present invention. In this embodiment, an acrylic plate 31 is used as a scraping blade in place of the galvanized sheet. The groove 33 of the box 32
Is a two-strand. An acrylic plate 31 is inserted into each groove 33, and the protruding tips of these acrylic plates 31 are configured to slide on the surface of the return belt 13 with a predetermined force. Other configurations are the same as those in the above embodiment.

In this embodiment, the gypsum adhered to the belt 13 is scraped off at each end of the acrylic plate 31. In this cleaner device, since the acrylic plates 31 are arranged in two rows, there is an effect that the attached matter can be reliably scraped off. In addition, the thickness of the acrylic plate 31 can be reduced to, for example, about 3 mm, and gypsum does not adhere to the sliding contact surface. Furthermore, since it is a box type, replacement of the acrylic plate 31 is extremely simple.

[0022]

According to the cleaner device of the present invention,
The effect of scraping off the raw materials adhering to the belt surface can be increased, and the adhering matter can be completely scraped off. Also, the replacement of the scraping blade is extremely simple. Further, as a result of eliminating powder dust from the return belt, the trouble of cleaning can be saved. further,
A clean working environment can be obtained.

[Brief description of the drawings]

FIG. 1 is a side view showing a belt conveyor cleaner according to one embodiment of the present invention.

FIG. 2 is a perspective view showing a belt conveyor cleaner according to one embodiment of the present invention.

FIG. 3 is a cross-sectional view showing a box portion of the cleaner device of the belt conveyor according to one embodiment of the present invention.

FIG. 4 is a perspective view showing a belt conveyor cleaner according to another embodiment of the present invention.

FIG. 5 is a sectional view showing a box portion of a cleaner device for a belt conveyor according to another embodiment of the present invention.

FIG. 6 is a perspective view showing a conventional belt conveyor cleaner device.

FIG. 7 is a side view showing a conventional belt conveyor cleaner device.

[Explanation of symbols]

 Reference Signs List 10 cleaner device, 11 gypsum (raw material), 12 belt conveyor, 13 return belt, 16 grooves, 17 box, 18 galvanized plate (blade), 19 urging member, 20 sponge (cushion material), 23A, 23B lever, 25 weight , 31 Acrylic plate (blade).

 ────────────────────────────────────────────────── ─── Continuing from the front page (72) Inventor Ken Ashida 1-1, Donan-cho, Yawata-nishi-ku, Kitakyushu-shi, Fukuoka Mitsubishi Materials Corporation Kurosaki Plant

Claims (3)

[Claims] 1. A belt conveyor cleaner device for scraping off extraneous matter on the surface of a return belt of a belt conveyor, wherein the box is swingably supported below the return belt, and the box is urged upward. And a blade made of a metal plate or a resin plate which is inserted into the box and whose upper end slides on the surface of the return belt. 2. The belt conveyor cleaner according to claim 1, wherein a lower end of the blade is supported on a bottom wall of the box via a cushion material. 3. A lever having the box attached to one end thereof and the other end of the lever supported by the urging member so as to be swingable in a vertical plane with an intermediate portion in the longitudinal direction as a fulcrum. The belt conveyor cleaner according to claim 1, further comprising: a weight attached to the belt conveyor.