JPH0131316Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Field of Industrial Application) The present invention relates to a plastic runner, a slitter-type crusher for crushing industrial waste such as defective molded products, municipal garbage, and the like.

(Prior Art) For example, as disclosed by the present applicant in Utility Application No. 106603/1980, a scraper device in a slitter type crusher is constructed as shown in FIG.

In Fig. 3, numeral 1 denotes a housing, which has a crushing chamber 2 having an input port at the top and a discharge port at the bottom. They are installed in parallel.

The rotor 3 has rotary blades 5 arranged in a row on a main shaft 4, and the side surfaces of the rotary blades 5 correspond to the rotor 3.
The rotors 3 are positioned in a groove 6 in the rotary blade 5 so that the rotors 3 are interlocked with each other.

Reference numeral 7 denotes a scraper, which is located on the discharge side near the occlusal part and has a comb-shaped scraper portion 8 that enters into the groove 6 of the rotor 3.

9 indicates a screen member for particle size adjustment.

(Problems to be Solved by the Invention) When large lump materials, viscous materials, etc. are introduced during crushing or crushing, these materials may get caught above the occlusal part of the rotor 3.

At this time, the rotor 3 is switched from the forward rotation direction indicated by arrow A to the reverse rotation direction, and the load is released and the rotor 3 is restarted.
Since the back 8A of the back 8A was wedge-shaped, the material sometimes got stuck in the back 8A.

In addition, since the inner wall 1B of the input port 1A is on a vertical plane, the so-called width of the input port 1A is small, and the large lumps input from the input port 1A are supported (reserved) by the inner wall 1B. This often results in biting into the outer peripheral surface of the rotor 3, and when the rotor 3 is reversed, it is also difficult to peel off the material adhering to the claws.

The purpose of this invention is to be able to reliably perform the scraper action in both forward and reverse rotation, and also to expand the opening of the input port while also making it possible to retain large lumps and peel off material that adheres to the toe. shall be.

(Means for Solving the Problems) The technical means taken by the present invention to achieve the above-mentioned purpose are the inlet 11 at the top and the outlet 12 at the bottom.
In the crushing chamber 13 of the housing 10, a pair of rotors each having rotary blades arranged in the axial direction are arranged in parallel, and the rotary blades of each rotor are separated between the side surfaces of the adjacent rotary blades of the other rotor. The rotors are positioned in the grooves to make the rotors interlock with each other,
A scraper is provided on the discharge side near the occlusal part of the rotor to act as a scraper on the groove of the rotor, and the upper part is attached to the outer periphery of each of the pair of rotors, the upper part is attached to the input port side, and the lower part is attached to the base side of the scraper. In the case where a pair of arc-shaped screens are attached, the left and right side walls of the input port are formed into inclined side walls that expand upwardly, and each lower edge of the inclined side walls is directed toward the rotor. The scraper is formed into a sharp point, and the portions of the scraper that act as scrapers are provided corresponding to each of the forward and reverse directions of the rotor.

(Function) According to the present invention, by forming the left and right side walls of the input port 11 into the upwardly expanding inclined side walls 27, the input width of the input port 11 is widened, and material can be supplied to the crushing chamber 13 effectively. Therefore, some of the large lumps of the supplied (injected) material are retained (supported) by the inclined side wall 27.

When the left and right rotors 14 are rotated inwardly, the material is crushed by the slitter action by the side surfaces, and the material is crushed by the comb action by the screen, and materials smaller than the comb are discharged, and materials larger than the comb are is circulated to the input port 11 by the claw 20 of the rotor 14.

Further, during the above normal rotation operation, foreign matter adhering to the groove portion 19 is removed by the scraper portion 21B.

When the rotor 14 is operated in reverse, foreign matter adhering to the groove 19 is removed by another scraper section 21B, and the load due to foreign matter stuck between the rotors 14 is reduced. Foreign matter adhering to the nail 20 is peeled off by the sharpened portion 27A.

(Embodiments) Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

In FIGS. 1 and 2, a housing 10 has a crushing chamber 13 having an input port 11 at the top and a discharge port 12 at the bottom.

Reference numeral 14 denotes a pair of left and right rotors, which include a main shaft 15 that is parallel to each other, and a key 1 that is fitted onto the main shaft 15.
It consists of a collar 17 and a rotary blade 18 which are fixedly attached at 6, and the collar 17 and the rotary blade 18 are arranged in a row in the axial direction, and the outer peripheral part of the collar 17 constitutes the bottom of the groove part 19.

The rotary blade 18 has a material retraction claw 20 on its outer periphery, and the side surfaces of the rotary blade 18 are bitten into the grooves 19 in the corresponding rotor 14 on the other side, and the side surfaces slide against each other to perform a slitting action. It's like that.

The pair of left and right rotors 14 perform a crushing action by rotating each other in the direction of arrow A, and can also rotate in the opposite direction of arrow A, which can be switched between forward and reverse directions by a motor, reducer, gear transmission mechanism, etc. (not shown). freely driven.

Reference numeral 20 denotes a mounting frame, which is installed directly below the occlusal part of the rotor 14 and parallel to the rotor axial direction, and a pair of left and right scrapers 21 can be attached to and detached from this mounting frame 20 using bolts 22, a presser plate 23, etc. is attached to.

The scraper 21 has a comb-shaped scraper protrusion 21A, which fits into the corresponding groove 19, and the tip of the scraper protrusion has an arcuate surface along the outer circumferential surface 17A of the collar 17 so that the scraper protrusion 21A approaches or contacts the outer peripheral surface 17A of the collar 17. , both sides of this arc surface are used as scraper parts 21B.

That is, in either case of forward or reverse rotation of the rotor 14, the scraper portion 21 is operated to perform a scraper action.
B is an obtuse angle with respect to the groove bottom, and in the example of FIG. 1, the scraper portion 21B is a straight line, but in the example of FIG. 2, it has a dovetail shape.

In addition, 24 is an adjustment bolt, 25 is a screen for particle size adjustment, which has a screen hole 25A, and 26
indicates a pair of left and right opening/closing doors.

In addition, the left and right side walls on the side of the input port 11 are formed into upwardly expanding inclined side walls 27 to widen the width of the input port 11, and furthermore, the side walls 27 allow a portion of the material input, such as a large lump, to be removed. hold things. Furthermore,
The lower end edge of the inclined side wall 27 is formed into a pointed portion 27A that is sharp toward the rotor 14, so that when the rotor 14 is reversed, material attached to the claws 20, etc. can be peeled off.

According to the above embodiment, the crushed materials such as liners and molded products are inputted into the crushing chamber 13 through the input port 11, drawn in by the claws 20 of the rotors 14, and then transferred to the rotary blades 18 of each rotor 14 and the other side rotor. It is crushed by the slitting action between the side surfaces of the corresponding rotary blades 18 of 14, and is crushed between the claws 20 and the outer peripheral surface of the collar 17, which is the bottom surface of the groove 19.

The crushed material is sent further downward by the action of the claws 20 and faces the screen 25, but due to the holes 25A of the screen 25, materials smaller than this escape downward through the discharge port 12 and are transported via a conveyor (not shown) or the like. and is ejected outside the aircraft.

Outer peripheral surface 17 of collar 17 during the above work
A, that is, the material that is about to adhere and grow in the groove portion 19 is peeled off by the scraper portion 21B, and the material that is wrapped around the outer periphery of the claw 20 is peeled off by the comb bottom of the scraper 21.

If a large lump of material or a hard material bites into the occlusal area between the rotors 14, an excessive load will be applied to the rotor 14. In such a case, the load is automatically or artificially detected. Thus, the direction of rotation of the rotor 14 is reversed.

During this reversal, the crushed material or screen 25
The crushed material remaining inside is carried around together, but in this case, the material is peeled off by the scraper section 21B of the scraper 21.

That is, the scraper 21 is prevented from being bitten into a tapered shape.

When the overload is removed, the rotor 14 is returned to normal operation, thereby repeating forward and reverse rotation.

(Effects of the invention) In the present invention, a pair of rotors each having rotary blades arranged in the axial direction are arranged in parallel, and the rotary blades of each rotor are connected to the groove between the side surfaces of the adjacent rotary blades of the other rotor. A scraper that is positioned inside the rotor to make the rotors interlock with each other, and that acts as a scraper on the groove of the rotor on the discharge side near the interlocking part of the rotor, the portion of the scraper that acts as a scraper. are provided for each of the forward and reverse directions of the rotor, so whether the rotor is rotating forward or reverse, you can expect a reliable scraper action on the adhering material, thereby preventing the adhesion and growth of the material. can.

Therefore, it becomes highly durable, suppresses heat generation, makes the particle size of the crushed material constant, and improves operating efficiency.

In addition, since the left and right side walls of the input port 11 are formed into upwardly expanding inclined side walls 27, the input opening of the input port 11 is widened, making it easy to feed (inject) materials, and the side walls 27 It is also possible to temporarily hold (support) large chunks of material, reducing the load on the rotor 14.

Further, since the lower end edge of the inclined side wall 27 has a sharpened portion 27A toward the rotor 14, when the rotor 14 is reversed, deposits attached to the outer periphery of the pawl 20 can be peeled off by the sharpened portion 27A.

The present invention has the above advantages.

[Brief explanation of drawings]

FIG. 1 is an elevational sectional view of the first embodiment, FIG. 2 is an elevational sectional view of the second embodiment, and FIG. 3 is an elevational sectional view of the conventional example. 11...Housing, 14...Rotor, 18
...Rotary blade, 19...Groove portion, 21...Scraper, 21B...Scraper portion.

Claims (1)

[Scope of Claim for Utility Model Registration] In a crushing chamber that has an input port at the top and a discharge port at the bottom, a pair of left and right rotors each having rotary blades arranged in the axial direction are arranged in parallel. The rotary blade is positioned in the groove between the side surfaces of adjacent rotary blades in other rotors to make the rotors interlock, and the discharge side near the interlock part of the rotor acts as a scraper on the groove of the rotor. A scraper is provided, and a pair of arc-shaped screens are provided on each outer periphery of the rotor, with an upper portion attached to the input port side and a lower portion attached to the base of the scraper, the left and right sides of the input port. The side wall is formed into an inclined side wall that is inclined to expand upward, and each lower end edge of the inclined side wall is formed into a sharp point toward the rotor, and a portion of the scraper that acts as a scraper is formed so that the rotor rotates in the forward and reverse directions. A slit type crusher characterized by being provided corresponding to each direction.