JPH05104064A - Vibration screen device - Google Patents

Abstract

PURPOSE:To rapidly incorporate a screen in a trough with high accuracy and to prevent the mixing of foreign matter such as a small metal piece with a product to be sorted. CONSTITUTION:L-shaped frames 21 are fixed to both surfaces of a frame screen so formed by attaching a screen to a square frame 9 under predetermined tension and the frame screen So is dropped in a trough T to be attached to the inside of the side plates 23 of the trough T through the L-shaped frames 21.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vibration screen device using a frame tension screen having a structure in which a screen (sieving net) is attached to a rectangular frame with a uniform tension. The vibrating screen device according to the present invention is used mainly in food-related fields for selecting edible powders and granules.

[0002]

2. Description of the Related Art In a conventional vibrating screen device, there are various methods for incorporating a screen, particularly a fine screen composed of a woven net, into a trough, but a typical one which is frequently used. There are the following two. The one shown in FIG. 14 allows for a pulling margin for applying tension,
The screen S, which has a width slightly smaller than the width of the trough T and has a reinforcing contact plate 31 attached to both ends in the width direction, is machined, and the both ends in the width direction of the screen S are processed. By folding and hooking the hook 32 on the hook 32 and pulling the hook 32 from the outside of the side plate 33 of the trough T with a tension bolt 34, the screen S is incorporated between the troughs while adjusting the tension. In addition, the one shown in FIG. 15 has a pair of hooks 35a, 3 at both ends in the width direction of the screen S.
5b, and hook these hooks 35a and 35b into a trough T
It is pulled in from the outside of the side plate 33 by a pulling bolt 34.

In any of the methods, since the screen is incorporated in the trough while adjusting the tension at the time of assembling, there are the following problems. (1) The tension of the screen varies depending on the individual workers who perform the assembling work, and it takes a lot of time to assemble the screen. In order to make the screen tension uniform and to prevent uneven tension, the operator is required to have considerable experience and skill. (2) When the screen S is installed in the trough T while the tension is adjusted by the tension bolts 34 as described above, a small metal piece is generated by the "caulking" of the tension bolts 34, and during the sorting operation. Small metal pieces may be mixed in the products to be sorted. When using a pair of hooks 35a and 35b as in the latter method, rubber packings 36 are attached to the insides of the hooks 35a and 35b, and the packings 36 are damaged by vibration. It may be mixed with the product to be sorted due to wear. When the product to be sorted is a medicinal food-related product, the contamination of foreign matter is a fatal problem. (3) When used for a certain period of time, the screen S may be removed from the trough T for cleaning or maintenance, and in this case, the screen S is easily damaged. (4) Since the trough is a canned product, a gap is partially formed between the hooks 32, 35a and the side plate 33 of the trough, and the powder, which is the product to be sorted, goes downward through the gap. While leaking out, powder may leak out of the trough through the insertion hole 37 of the tension bolt 34 provided in the side plate 33 of the trough on the way. (5) The larger the screen, the more labor and effort required for the attachment / detachment operation.

[0004]

Therefore, according to the present invention, the incorporation of the screen into the trough is highly accurate (uniform tension [which can be confirmed by numbers] and has no tension unevenness).
It is an object of the present invention to make it possible to perform the processing quickly and to prevent foreign matter such as small metal pieces from mixing into the products to be sorted during the sorting work.

[0005]

In order to solve this problem, the means adopted by the present invention is to form a frame tension screen in which a screen is attached to a rectangular frame by applying a predetermined tension. The frame tension screen is attached to both side plates of the trough so that the screen is incorporated into the trough.

[0006]

When the frame tensioning screen, in which the screen is attached to the rectangular frame with a predetermined tension, is attached to both side plates of the trough, the screen is incorporated into the trough. There is no need to make any adjustments such as tension or uneven tension when assembling. For this reason, the screen can be quickly and highly accurately incorporated into the trough regardless of the experience and skill of the operator. In addition, since the structure can be divided, a small number of people can install the trough. Furthermore, when the screen is installed in the trough, the tension bolts are not used as in the past, so the tension bolt or this mating member will not be scraped off and small metal pieces will not be generated, and the product to be sorted will not be generated. No foreign metal will be mixed in. Therefore, when the product to be sorted is a pharmaceutical or food-related product, the reliability of the vibration screen device is significantly increased.

[0007]

EXAMPLES The present invention will be described in more detail with reference to examples. First, an outline of a vibration screen device incorporating the frame tension screen S ₀ will be described, and then the frame tension screen S ₀ and its mounting structure will be described in detail. FIG. 1 is a front view of a vibration screen device,
FIG. 2 is a right side view thereof, in which a drive unit 2 supported via a pair of anti-vibration springs 1 and a trough T supported via a stationary stand 3 and anti-vibration springs 4 are connected. ,
The vibration generated in the drive unit 2 is transmitted to the trough T. A frame screen S ₀ is built in the trough T,
Products to be sorted, which have been loaded into the trough T from the loading port 6, are sorted through the mesh of the screen S while being conveyed on the screen S by the vibration action, and passed through the screen of the screen S. And those which do not pass are discharged from the first and second discharge ports 7 and 8, respectively.

As shown in FIGS. 3 to 9, the frame tension screen S ₀ has a construction in which the screen S is attached to a rectangular frame 9 in which an L-shaped angle member is assembled in a square shape. is there. The screen S is composed of a fine mesh. A small-diameter pipe body 11 is arranged in the lengthwise direction in the central portion of the rectangular frame 9 in the width direction.
Since it is attached so as to cover 1, the center portion in the width direction has a middle-height shape (see FIGS. 5 and 7). Both ends in the length direction of the screen S are bent at right angles, and the bent portions are sandwiched between the angle member 12 and the holding plate 13, and the holding plate 13 is fixed to the angle member 12 by the fixing bolts 14.
It is fixed by (see FIG. 8). Further, both ends in the width direction of the screen S are folded in two and the pad 1
5, the angle member 16 and the holding plate 17 are inserted in this state.
It is sandwiched between and by a fixing bolt 18
Are fixed to the angle member 16. The vertical plate portions 16a of the angle members 16 forming the widthwise ends of the rectangular frame 9 are provided with bolt insertion holes 19 for mounting a frame 21 described later at a constant pitch. The screen S is attached to the rectangular frame 9 as described above while adjusting tension and avoiding uneven tension.

To attach the frame tension screen S ₀ to the trough T, as shown in FIG. 10, the frame tension screen S ₀ is attached.
Of the frame S _{0 having} a reverse L-shaped cross section on the outside of the angle member 16 arranged along the length direction at both ends of the rectangular frame 9 in the width direction.
The vertical plate portion 21a of this frame 21
The vertical plate portion 16a of the angle member 16 is fixed by a large number of fixing bolts 22. In this manner, the frame-clad Subscription - Install the arm 21, the frame-clad subscription - - down S respectively deflection on both end portions in the width direction of the _zero down S ₀ trough T
The frame 2 is inserted into the flange 23a provided outward at the upper end of the side plate 23 of the trough T.
The horizontal plate portion 21b of No. 1 is applied and overlapped, and the end portion of the cover 24 is further overlapped with the horizontal plate portion 21b of this frame 21. When fixed to T, the screen S is incorporated into the trough T. In order to remove the screen S from the trough T for cleaning or maintenance, the fastening metal fitting 25 is loosened and the handle 2 provided inside the frame 21 is removed.
6 may be used to lift the frame tension screen S ₀ upwards. Also, instead of removing only the screen S,
Since the removal of the emission S _0, subscriptions at the time of removal - - frame clad subscription there is an advantage that the emission S is not damaged. in this way,
The screen S can be quickly attached to and detached from the trough T.
Particularly, in this embodiment, since the screen S can be attached / detached without using the bolts, there is no problem that foreign matters generated during the attachment / detachment of the bolts are mixed into the products to be sorted and the bolts are attached to the side plate 23 of the trough T. Without any holes,
Since the screen S can be incorporated into the trough T, there is an advantage that the powders as the products to be sorted do not leak out of the trough during the vibration sorting.

In the embodiment shown in FIG. 11, the vertical plate portion 16a of the angle member 16 which forms the square frame 9 of the frame tension screen S ₀ by providing the side plate 23 of the trough T with the bolt holes 27. May be closely attached to the inside of the side plate 23 of the trough T, and the rectangular frame 9 may be attached to the side plate 23 of the trough T by the fixing bolt 28. In this mounting example,
Although the fixing bolt 28 is used, since the tensile force does not act, the "stripping" of the bolt is unlikely to occur. The frame tension screen S ₀ described above is merely an example, and any frame may be used as long as it has a structure in which the screen is attached to the rectangular frame by applying a predetermined tension.

As shown in FIGS. 12 and 13, when the trough T is long, the frame tension screen has a divided structure so that the weight per piece is reduced, so that the frame tension screen for the trough is reduced. It will be easier to install. In the embodiment, the frame-tightened screens S _{01 and} S _{02, which} are divided into two, are incorporated in the trough T with a predetermined step.

[0012]

(1) Since the frame tension screen in which the screen is attached to the rectangular frame with a predetermined tension is used,
When installing the screen in the trough, it is not necessary to adjust the screen tension and tension unevenness. For this reason,
The screen can be installed with high accuracy and quickly regardless of the experience and skill of the operator, and the screen can be removed quickly without damaging the screen. (2) Since the frame tension screen is used, the tension of the screen can be increased as compared with the case where the screen is installed in the trough while adjusting the tension at the work site. Lifespan is extended. (3) Since the frame tension screen can be attached to and detached from the trough without using the tension bolts, the foreign matter made of metal is not mixed in the products to be sorted. Therefore, when the product to be sorted is a medicine or food-related product, the reliability of the vibration screen device is significantly increased. (4) If the frame tension screen has a split structure, the weight per piece will be small, and a small number of people will be required to assemble the trough,
And it can be done easily.

[Brief description of drawings]

FIG. 1 is a front view of an embodiment of a vibration screen device according to the present invention.

FIG. 2 is a right side view of an embodiment of the vibration screen device according to the present invention.

FIG. 3 is a plan view of a frame tension screen S ₀ .

FIG. 4 is a front view of the frame tension screen S ₀ .

FIG. 5 is a side view of the frame tension screen S ₀ .

6 is a cross-sectional view taken along line XX of FIG.

7 is a sectional view taken along line YY of FIG.

FIG. 8 is an enlarged view of a portion indicated by (A) in FIG.

9 is an enlarged view of a portion shown in FIG. 7 (B).

FIG. 10 is a partial cross-sectional view of a frame tension screen S _{0 in} a mounted state.

FIG. 11 is a partial cross-sectional view showing another state in which the frame tension screen S ₀ is attached.

FIG. 12 is a vertical cross-sectional view of a vibration screen device in which the frame tension screens S _{01 and} S ₀₂ having a divided structure are incorporated in the trough T.

FIG. 13 is an enlarged sectional view taken along line ZZ in FIG.

FIG. 14 is a partially enlarged cross-sectional view of a conventional built-in structure of the screen S with respect to the trough T.

FIG. 15 is a partially enlarged cross-sectional view of another conventional built-in structure of the screen S with respect to the trough T.

[Explanation of symbols]

S: Screen S _0, S _01, S ₀₂ : Frame tension screen T: Trough 9: Square frame 21: Frame 23: Trough side plate 23a: Flange part

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Akio Nishi, 1730 Hinaga, Yokkaichi, Mie, Toei Plant, Ajinomoto Co., Inc. (72) Inventor Noriya Shimura 1-1, Suzuki-cho, Kawasaki-ku, Kanagawa Prefecture Ajinomoto Incorporated Kawasaki Plant (72) Inventor Yoshihiko Ikeda 1730 Hinaga, Yokkaichi-shi, Mie Ajinomoto Co., Inc. Tokai Plant (72) Inventor Sei Sakurai 15-1 Nayoro-cho, Atsuta-ku, Nagoya Kansai Wire Mesh Co., Ltd.Nagoya In sales office

Claims (2)

[Claims] 1. A frame tension screen, in which a screen is attached by applying a predetermined tension to a rectangular frame, is formed in advance, and the frame tension screen is attached to both side plates of the trough. A vibrating screen device characterized in that the screen is incorporated in a trough. 2. A frame having an inverted L-shaped cross section is attached to each side of a rectangular frame of the frame tension screen, the frame tension screen is dropped into the trough, and the frames are provided at the upper ends of both side plates of the trough. To secure the frame by stacking and fixing the frame on the formed flange part, and incorporating a screen in the trough, and further dividing the frame tension screen into a divided structure to facilitate the attachment / detachment operation of each frame tension screen. The vibration screen device according to claim 1.