JP2002336791A - Sieve apparatus for adhesive material - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a sieve apparatus for an adhesive material preventing a bridge phenomenon due to the adhesive material having high tackiness to enhance the passing efficiency of a sieve. SOLUTION: In the sieve apparatus for the adhesive material having a hopper 1, which receives a raw material charged from the outside, provided to the upper part thereof and also have a rolls screen 10 for sieving the raw material provided to left and right frames to incline the frames in a before and behind direction at the lower part of the hopper, the rolls screen 10 is formed of a plurality of screw rolls 12, or the like, arranged in parallel to the left and right frames in a freely rotatable manner and the screw rolls 12, or the like, are rotated by a drive mechanism 17.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sieving apparatus for an adhesive material, and more particularly, to a sieving apparatus for an adhesive material which prevents a bridging phenomenon caused by the adhesive material and improves a passage efficiency of the sieve. .

[0002]

2. Description of the Related Art Raw materials such as ore and limestone are sieved after being mined, and a roll screen, a vibrating screen, a bar screen, and the like are used for the sieving.

[0003] The roll screen is disclosed in Japanese Patent Application No. 2000-357694 and Japanese Patent Application No.
As shown in FIG. 6A shown in FIG. 6A, a plurality of knotted rollers 3, 3,... Are rotatably arranged between the left and right frames 2, 2, and are driven by a drive mechanism.
While rotating…, a lump smaller than the gap between the knotted rollers 3, 3 is dropped from the gap, and the knotted rollers 3, 3
The raw material 7 is classified by moving only a lump larger than the gap between the rollers on the knotted roller and discharging the lump. The frames 2, 2 are supported by the front legs 5 and the rear legs 6,
It is formed so as to be inclined downward from the rear leg 6 to the front leg 5.

By the way, in the process of classifying a raw material containing a highly adhesive material by the roll screen, even if the raw material has a small particle size, the raw materials are easily aggregated into a large mass due to the adhesive force. As a result, the raw material 7 becomes larger than the gap between the knotted rollers 3 and 3 and is rolled on the knotted roller and discharged as screen over,
The passage efficiency becomes poor. Therefore, as shown in FIG. 6 (a), the rotation direction of the knotted rollers 3, 3,... Is driven so as to be inclined upward, and the raw material 7 is pushed upward, and the material having high adhesiveness is inclined upward. Objects with low tackiness (stones, gravel, etc.) can be separated by falling down the slope. Further, the large sticky mass which has been pushed upward on the slope is broken into small pieces by the cutter of the crusher 4 provided above the knotted roller 3 at the uppermost portion of the slope, and is dropped downward.

However, when the raw material 7 is put into the hopper 1 provided on the frame 2, if a certain amount or more is dropped at once, as shown in FIG. The raw material 7 causes a bridging phenomenon due to frictional resistance with both ends of the hopper 1 and cannot move the charged raw material 7 inclining upward, but stays on the knotted rollers 3, 3,. Impossible. Incidentally, this bridge phenomenon is not limited to the roll screen, a similar phenomenon occurs in a sieve device such as a bar screen and a vibrating screen,
This significantly deteriorates the passage resistance.

Therefore, technical problems to be solved arise in order to obtain a sieve device for an adhesive material which can prevent the bridging phenomenon due to the adhesive material having high tackiness and improve the passage efficiency of the sieve. Therefore, an object of the present invention is to solve the problem.

[0007]

SUMMARY OF THE INVENTION The present invention has been proposed in order to achieve the above-mentioned object. A hopper for supplying raw materials from the outside is provided at the upper part, and left and right frames are provided at the lower part of the hopper in the front-rear direction. In the adhesive material sieving apparatus provided with a roll screen for sieving the raw material on the frame, the roll screen is disposed in parallel with the left and right frames and rotatably. An adhesive material sieve device formed of a plurality of screw rolls and configured to rotate the screw rolls by a driving mechanism, and fixing or rotating the roll screen along the longitudinal direction between the screw rolls An object of the present invention is to provide a sieving apparatus for an adhesive material which is formed by disposing a possible roll bar.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below in detail with reference to FIGS. FIG. 1A is a plan view of a sieve device for an adhesive material (hereinafter referred to as a sieve device) A, and FIGS. 2A and 2B are side views thereof. The sieving apparatus A is provided with a hopper 1 at an upper part for charging an adhesive material having high adhesiveness (hereinafter referred to as a raw material) from the outside, and a roll screen 10 for sieving the raw material at a lower part of the hopper 1. A frame 11 is provided. The hopper 1 is shown in FIG.
(A) As shown in (b), the material is formed in a shape that expands upward so as to facilitate the introduction of the raw material.

The frame 11 is composed of a front frame 11a, a rear frame 11b, a right frame 11c on the right and a left frame 11d on the left, with the lower side of FIG. The frames 11a and 11b and the left and right frames 11c and 11d face each other and are formed in a rectangular shape.

The frame 11 is supported by a front leg 24 and a rear leg 25 as shown in FIG. 4, and is formed so as to be inclined forward from the rear leg 25 toward the front leg 24. still,
The lower part of the frame 11 and the upper parts of the front legs 24 and the rear legs 25 are connected by pins, and the front legs 24 and the rear legs 25 can be extended and contracted with a hydraulic jack or the like so that the inclination angle of the frame 11 can be adjusted as desired. It may be.

Further, a plurality of screw rolls 12, 12, 12 forming the roll screen 10 are arranged at predetermined intervals between the front frame 11a and the rear frame 11b in parallel with the left and right frames 11c, 11d. And it is rotatably provided, and both ends are supported by bearings 13 and 13 such as bearings or bushes. The screw rolls 12, 12, 12 are provided with a screw 12a on the outer periphery, and one end of each of the screw rolls 12, 12, 12 is projected from the rear frame 11b as shown in FIGS. Sprockets 14a, 1
4a are fitted and connected by chains 15,15.

As shown in FIG. 3, a bracket 16 is fixed to the left frame 11d, and a motor 17a such as an electric motor or a hydraulic motor is fixed to the bracket 16 and fitted to a rotating shaft of the motor 17a. A drive mechanism 1 for transmitting a rotational drive to the respective sprockets 14a, 14a... Via the chain 15 by the sprockets 14b to rotate the respective screw rolls 12, 12, 12.
7 is constituted. The screw rolls 12, 12, 1
The drive mechanism 17 is operated such that the rotation direction 2 is clockwise toward the forward inclination.

Further, roll bars 18, 18 are provided along the longitudinal direction between the screw rolls 12, 12.
As shown in FIG. 2 (b), the mounting positions of the roll bars 18, 18 have a predetermined interval between the screw outer diameter of the screw roll 12 and the outer diameter of the roll bar 18, and the upper end thereof It is placed at a position slightly lower than the uppermost end of the screw outer diameter, and both ends in the longitudinal direction are connected to the front frame 11a.
And is fixed to the rear frame 11b.

The roll bars 18, 18 may be formed by screws and rotated. In this case, the lead of the screw is changed, the rotation speed is changed, or the rotation direction is changed with respect to the adjacent screw rolls 12, 12, so that the generation of shearing force on the raw material is promoted as described later.

Next, a rotating roll 20 for preventing a bridge phenomenon due to the raw material on both inclined surfaces of the hopper 1 is provided.
20 ... are installed. The rotating rolls 20, 20,.
As shown in FIG. 2A and FIG. 2, the screw rolls 12, 12, 1 are provided inside the inclined surfaces on both sides in the longitudinal direction of the hopper 1.
It is rotatably arranged at a predetermined interval in parallel with the two, and both ends thereof are supported by bearings 19, 19 such as bearings or bushes.

One end of each of the rotary rolls 20, 20 ... is projected from the rear of the hopper 1, and sprockets 21a, 21a ... are fitted to the respective shaft ends to form chains 22,2.
Connect with 2. Then, as shown in FIG. 2 (a), a bracket is fixedly mounted on the inclined surface of the hopper 1, and a motor 23 such as an electric motor or a hydraulic motor is fixed to the bracket, and is fitted on a rotating shaft of the motor 23. Sprocket 21 to wear
b transmits the rotational drive to each of the sprockets 21a, 21a via the chain 22.
Are driven to rotate.

The rotation direction of the rotating rolls 20, 20,... Is operated so as to be downward with respect to the inclination of the hopper 1. Therefore, by the rotation of the rotating rolls 20, 20,..., The contact portion with the raw material in the hopper 1 changes from static friction to dynamic friction, so that the frictional force can be reduced. The force to move to the center acts, and the bridge phenomenon can be eliminated.

Next, the function of the sieve A will be described with reference to FIG. Adhesive material (raw material) charged into the hopper 1
Even if the particles 26 are originally a collection having a small particle size, they become a large lump due to their own adhesive force and are difficult to pass through the roll screen 10. In addition, when a large amount of material is supplied at one time, a bridging phenomenon is likely to occur on both inclined surfaces of the hopper 1 and the hopper 1 stays above the roll screen 10.

Therefore, the screw rolls 12, 1
2 and 12 are constantly rotated, the lead of the screw 12a of the screw roll causes the roll screen 10 to rotate.
A force acts to drag the raw material 26 loaded thereon in the direction of the screen oversize. In addition, the roll bar 18 is disposed between the screw rolls 12 and 12, and since no screw is formed in the roll bar 18, the raw material 26 on the roll bar 18 has a screen-over-size. The force trying to drag in the direction does not work.

Further, when a large lump of the raw material 26 is laid on both the screw roll 12 and the roll bar 18, one tries to drag it down to the screen oversize side, and the other maintains the state as it is. try to. For this reason, a shear force acts on the mass and the mass is finely torn. Before the fine raw material 26a is discharged to the outside as a screen over, the roll screen 1
It passes through the zero and falls down, and is efficiently discharged. Therefore, even if the input raw material 26 once causes a bridging phenomenon in the hopper 1, the mass is broken down by the screw roll 12 and the roll bar 18, and the bridging phenomenon can be eliminated.

The present invention can be variously modified without departing from the spirit of the present invention, and it goes without saying that the present invention extends to the modified ones.

[0022]

According to the present invention, as described in detail in the above-described embodiment, the invention according to claim 1 comprises a plurality of screws for rotatably disposing a roll screen in parallel with the left and right frames. Since it is formed by a roll and the screw roll is rotated by a drive mechanism, a shear force is exerted by the screw of the screw roll on the applied adhesive material to tear a large lump or eliminate a bridge. The passage efficiency of the roll screen can be improved.

According to a second aspect of the present invention, in addition to the effects of the first aspect, the roll screen is formed by disposing a roll bar which is fixed or rotatable along the longitudinal direction between the screw rolls. Therefore, the adhesive material straddling the screw roll and the roll bar can be finely torn by shearing force, and the passage efficiency of the roll screen can be improved.

[0024] Thus, the present invention provides various kinds of remarkable effects, such as remarkably improving the function of separating and classifying the adhesive material.

[Brief description of the drawings]

FIG. 1A is a plan view of an embodiment of the present invention, showing a sieve device for an adhesive material. (B) The top view which shows the drive mechanism of a screw roll.

FIG. 2 (a) is a view as viewed in the direction of the arrow II in FIG. 1 (a). (B) A view taken in the direction of the arrow in FIG. 1 (a).

FIG. 3 is a view as viewed from the direction indicated by the arrow C in FIG. 2 (b).

FIG. 4 is an explanatory view taken along the line II-II in FIG.

FIG. 5 is an explanatory view showing an operation state of the sieve device for an adhesive material.

FIG. 6A is an explanatory view showing an operation state of a conventional roll screen. FIG. 6B is a view taken in the direction of an arrow E in FIG.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Hopper 10 Roll screen 11 Frame 12 Screw roll 17 Drive mechanism 18 Roll bar 26 Adhesive material (raw material) A Sieve device for adhesive material

──────────────────────────────────────────────────の Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat ゛ (Reference) B07B 1/46 B07B 1/46 A F term (Reference) 4D021 AA03 AB12 BA01 CA11 CB09 DA01 DA05 DB11 EA10 JA09 JB01 KA14 LA01 LA08 LA11 LA15 4D063 CC01 CC06 GA07 GC05

Claims (2)

[Claims] 1. A hopper for feeding raw materials from the outside is provided at an upper part, and left and right frames are inclined in a front-rear direction at a lower part of the hopper, and a roll screen for sieving the raw materials is provided on the frames. In the adhesive material sieving apparatus, the roll screen is formed of a plurality of screw rolls which are arranged in a rotatable manner in parallel with the left and right frames, and the screw rolls are rotated by a driving mechanism. A sieve device for an adhesive material. 2. The apparatus according to claim 1, wherein the roll screen is formed by disposing a roll bar fixed or rotatable along a longitudinal direction between the screw rolls.