JP2002018308A - Rotary crusher - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a crusher in which a distance between a hammer and an inner wall of a crushing chamber can be easily adjusted. SOLUTION: Since this rotary crusher (1) is constituted so that the relative position of the crushing chamber (13) to a rotating shaft (5) can be changed, the distance between a hammer part (11) attached to the shaft (5) and the inner wall of the chamber (13) can be adjusted by moving the shaft (5) with respect to the chamber (13).

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rotary pulverizer for pulverizing various materials such as minerals, gravel, and glass bottles.

[0002]

2. Description of the Related Art As a conventional rotary pulverizer, one disclosed by the present applicant in Japanese Patent Application Laid-Open No. H11-342346 is known. This rotary crusher is configured such that an arm portion attached to a rotating shaft can bend or extend in a circumferential direction of a wall surface of a crushing chamber to return to an original state. Furthermore, the rotary shaft of this rotary crusher is configured so that the relative position with respect to the crushing chamber can be changed,
Thus, the distance between the head attached to the tip of the arm and the wall surface of the crushing chamber can be changed. When this rotary crusher is used, clogging of the crushed object between the head portion and the crushing chamber wall surface is prevented by the bending of the arm portion, and the crushed material is adjusted by adjusting the distance between the head portion and the crushing chamber wall surface. Since the pulverization can be performed in accordance with the size of the product, the water content, and the like, the pulverization efficiency can be kept high.

[0003]

However, there is still room for improvement in the above-mentioned rotary pulverizer. that is,
This is a problem of wear of the head portion and the inner wall surface of the crushing chamber. That is, when the position of the rotating shaft 111 is adjusted so that the state shown in FIG.
Since there is only slight contact with 5, the wear of both due to use is relatively small. However, in this case, the head 1
Since the impact of 13 on the object to be ground is relatively small, the grinding efficiency is not always good. On the other hand, the rotating shaft 11
When 1 is lowered to the state shown in FIG. 9, the impact given to the object to be crushed by the head portion 113 is greater than in the case described above, so that the crushing efficiency can be improved accordingly.

[0004] However, in the latter case shown in FIG.
Since the degree of contact between the head portion 113 and the inner wall 115 of the crushing chamber is greater than that of the former case shown in FIG. 8, the degree of wear of the head portion 113 is greater in the latter case. If the degree of wear is large, the head 1
15 shortens the service life. Until now the head 115
It has been thought that it is inevitable to wear, but there is no choice but to wear it for pulverization, but it is desirable to avoid as much as possible wear due to actions other than pulverization.

On the other hand, in order to perform pulverization according to the type of the material to be pulverized and to adjust the particle size after pulverization, the head unit 1 is used.
There may be a case where it is desired to provide a slight gap between the inner wall 13 and the inner wall 115 of the crushing chamber. In order to provide such a gap, for example, it is necessary to move the rotating shaft 111 upward or the grinding chamber 101 downward. It goes back to the state. That is, although a gap can be formed between the head portion 113 and the inner wall 115 of the crushing chamber, the crushing efficiency must be sacrificed for that purpose.

The present invention has been made in view of the above, and it is possible to minimize the wear of the head portion due to the contact with the inner wall of the crushing chamber without lowering the crushing efficiency. It is an object of the present invention to provide a rotary crusher capable of forming a gap between the head portion and the inner wall of the crushing chamber.

[0007]

Means for Solving the Problems The inventor of the present invention, which has made intensive studies in order to achieve the above-mentioned object, is based on the above-mentioned conventional rotary pulverizer and makes improvements to the conventional rotary pulverizer. The problem was solved without deteriorating the advantages of. The detailed configuration will be described later. It should be noted that the definition of terms used in the description of the invention in any claim is applied to the description of the invention in the other claims to the extent possible in nature.

(Structure of the invention described in claim 1) A rotary crusher according to the invention described in claim 1 (hereinafter referred to as "the crusher of claim 1") has a crushing chamber having a cylindrical inner wall surface. A rotating shaft protruding into the crushing chamber, a proximal arm attached to the rotating shaft, and an open end of the proximal arm such that it can be bent at least in a direction opposite to the rotation direction of the rotating shaft. And a head attached to an open end of the distal arm. The feature of the crusher according to claim 1 is that the angle A formed on the rotation direction delay side of the rotating shaft by the axis of the base arm portion that is hung down and the axis of the distal arm portion that extends extends the head portion. A holding structure for holding the distal arm such that 90 ≦ A <180 degrees without contacting the wall surface of the crushing chamber is formed between the proximal arm and the distal arm. It is in. The reason for setting 90 ≦ A is that if 90> A, the head would be too bent and the head would be separated from the inner wall of the crushing chamber.
The reason for setting A <180 is that if A ≧ 180, the material is in an extended state or bent in the opposite direction, and neither is suitable for pulverization.

(Operation and effect of the invention described in claim 1) When the crusher according to claim 1 is used, an object to be crushed introduced into the crushing chamber is hit by the rotation of the crushing chamber and the rotation of the rotary shaft to the head portion. Can be crushed. The proximal arm rotates with the rotation axis, and the distal arm is bent at least in a direction opposite to the rotation axis with respect to the proximal arm. The bent distal arm tends to extend due to centrifugal force. The repetition of the bending and the extension gives a large impact to the object to be crushed, so that the crushing efficiency is improved. On the other hand, the tip arm can be extended only within the above-mentioned predetermined range due to the function of the holding structure. Therefore, if the relative position between the rotating shaft and the inner wall of the crushing chamber is appropriately selected, the degree of extension is limited, so that excessive contact between the two can be achieved. Is prevented, whereby wear of the head portion can be suppressed.

(Structure of the invention described in claim 2) A rotary crusher according to the invention described in claim 2 (hereinafter, referred to as “pulverizer of claim 2”) has the same structure as the crusher of claim 1. An extension arm extending from the bent portion in a direction opposite to the head of the distal arm, and the base arm for abutting the extension arm. And a stopper provided in the portion.

(Function and Effect of the Invention According to Claim 2) In the rotary crusher according to the second aspect, the basic function and effect of the rotary crusher according to the first aspect are generated by the extension arm contacting the stopper. .

(Structure of the invention described in claim 3) The rotary crusher according to the invention described in claim 3 (hereinafter referred to as “pulverizer of claim 3”) is a rotary crusher according to claim 1 or 2. The configuration is limited, and the relative position between the pulverizing chamber and the rotating shaft is configured to be changeable.
In order to change the relative position, the grinding chamber may be configured to be movable with respect to the rotating shaft, or conversely, the rotating shaft may be configured to be movable with respect to the grinding chamber. Further, any of them may be configured to be movable with respect to the other.

(Operation and effect of the invention according to claim 3) When the rotary crusher according to claim 3 is used, in addition to the operation and effect of the rotary crusher according to claim 1 or 2, the relative position between the crushing chamber and the rotary shaft. Can be changed, so that the degree of contact between the head portion and the wall surface of the crushing chamber can be adjusted. Thereby, the particle size of the material to be pulverized after the pulverization can be adjusted.

(Structure of the invention described in claim 4) The rotary crusher according to the invention described in claim 4 (hereinafter referred to as the "pulverizer of claim 4") is any one of claims 1 to 3. A limitation is added to the configuration of the crusher, and a biasing structure for biasing the distal arm in the direction in which the distal arm extends to the proximal arm is provided between the distal arm and the proximal arm. It is characterized by being formed.

(Operation and Effect of the Invention According to Claim 4) When the rotary crusher of claim 4 is used, the distal end arm is urged in the extension direction by the action of the urging structure. The portion is elastically pressed toward the inner wall of the grinding chamber. Thereby, the crushing force for the crushed object located between the head portion and the inner wall of the crushing chamber can be increased.

(Structure of the invention described in claim 5) The rotary pulverizer according to the invention described in claim 5 (hereinafter referred to as "pulverizer of claim 5") is any one of claims 1 to 4. The configuration of the pulverizer is limited, and the head unit includes a rotatably supported roller.

(Operation and effect of the invention according to claim 5) When the low-satisfactory crusher according to claim 5 is used, in addition to the operation and effect of the crusher according to any of claims 1 to 4, a head is provided on the inner wall of the crushing chamber. Since the impact given by the rotation of the roller when the portions come into contact with each other is reduced, abrasion of the inner wall of the crushing chamber or the head itself can be reduced.

[0018]

An embodiment of the present invention (hereinafter, referred to as "the present embodiment") will be described with reference to the drawings. FIG. 1 is a schematic side view of a rotary crusher (hereinafter, referred to as “main crusher” as appropriate), and FIG.
It is XX sectional drawing of. FIG. 3 is a front view for illustrating the operation of the head section, and FIG. 4 is a view in which a gap is formed between the head section and the wall surface of the crushing chamber. 5 to 7 are views showing modified examples of FIG.

(Basic configuration of rotary crusher) The basic configuration of the present crusher 1 will be described with reference to FIG. Main crusher 1
Is a charging port 2 for charging the object B, a cylindrical grinding chamber 3 configured to receive the object B from one end, and an outlet 4 provided on the other end of the grinding chamber 3. And The crushing chamber 3 has supporting rollers 6, 6 on an installation base 5.
, And is rotatably supported by a drive motor 8 via a driven pulley 7 provided on the outer periphery thereof.

The crusher 1 includes a rotating shaft 11 penetrating the crushing chamber 3 in the longitudinal direction, a base bearing (supporting portion) 12 and a tip bearing (supporting portion) 13 for supporting the rotating shaft 11, A driven pulley 14 fixed to the end bearing 12 and a drive motor 15 for driving the driven pulley 14 by a belt are further provided so that the rotary shaft 11 can rotate in the crushing chamber 3. Base bearing 12 and tip bearing 13
Are respectively supported from below by support bases 16 and 17, and these support bases 16 and 17 are respectively supported by the lifting arms 1
It is supported on the upper surface of the installation base 5 via the bases 8 and 19 and the bases 20 and 21.

The elevating arms 18,
A mechanism (not shown) for raising and lowering the rotary shaft 19 is incorporated.
To move up and down. This rotating shaft 11
This movement is for changing the relative position between the rotating shaft 11 and the crushing chamber 3. Therefore, instead of the movement of the rotating shaft 11, the crushing chamber 3 may be moved, or both may be moved.

The rotating shaft 11 has a plurality of hammers 23, 23 attached in the radial direction, and the hammers 23, 23 are rotated by their own rotation. The rotation direction of the rotating shaft 11 is set to be opposite to the rotation direction of the crushing chamber 3 in order to increase the relative speed.

(Structure of Hammer Section) Each hammer section 23 will be described with reference to FIGS. Each hammer 23 has a base arm 24 having one end fixed to the rotation shaft 11 and a pivot (bend) at the other end of the base arm 24.
The distal arm 26 is generally constituted by a distal arm 26 which is mounted to be able to bend at least in a direction opposite to the rotation direction of the rotating shaft 11 via a head 25, and a head 27 which is fixed to the open end of the distal arm 26. In the present embodiment, the number of the hammer portions 23 is six, but the number can be appropriately increased or decreased according to the properties of the material to be crushed, the size of the crushing chamber 3 and the like.

(Holding Structure) The configuration of the hammer 23 will be described in more detail. The distal arm section 26 has an extension arm section 28 extending in the direction opposite to the head section 27, and a stopper 29 is provided at a side end of the base arm section 25 on the extension arm section 28 side to contact the extension arm section 28. ing. As shown in FIG. 3, the stopper 29 is formed by an axis 24L of the hanging base arm 24 and an axis 26L of the distal arm 26 extended to the maximum, on the side of the rotating shaft 11 that is delayed in the rotation direction. A is 90 ≦ A <1 in a state where the head portion 27 is not in contact with the inner wall surface 3a of the crushing chamber 3.
It is provided so as to be 80 degrees.
The reason why 90 ≦ A is that if 90> A, the head portion 27 is too bent and the head portion 27 separates from the crushing chamber inner wall 3a. Is bent in the opposite direction, and none of them is suitable for pulverization. These extension arms 2
A holding structure for holding the distal arm 26 in the present embodiment at a predetermined position is formed by the stopper 8 and the stopper 29.

(Operation and Effect of the Embodiment) The operation and effect of the embodiment will be described with reference to FIGS.
The material B to be pulverized in the pulverizing chamber 3 can be pulverized by the rotation of the pulverizing chamber 3 and the rotation of the rotary shaft 11 and the impact of the head 27. That is, the base arm 24 rotates together with the rotating shaft 11, and the distal arm 26 is bent at least in a direction opposite to the rotating shaft 11 with respect to the base arm 24. The bent tip arm section 26 tends to extend due to centrifugal force. By repeating this bending and extension, a large impact is applied to the object B to be ground, and as a result, the grinding efficiency can be improved.

On the other hand, the tip arm 26 can extend only within the above-mentioned predetermined range by the action of the extension arm 28 and the stopper 29 constituting the holding structure.
By appropriately selecting the relative position between 1 and the inner wall 3a of the pulverizing chamber, the degree of extension is restricted to prevent excessive contact between the two, and thereby the abrasion of the head portion can be suppressed. The change in the relative position is realized by the vertical movement of the rotating shaft 11 due to the lifting and lowering of the lifting arms 18 and 19. By raising the rotating shaft 11, a gap G as shown in FIG. 4 is formed between the head portion 27 and the wall surface 3a of the crushing chamber, thereby adjusting the particle size of the crushed material B after crushing. it can. In addition, since the gap G is formed, there is no contact between the head portion 27 and the wall surface 3a of the crushing chamber.
Wear of both can be reduced by the rotation operation.

(First Modification of the Present Embodiment) A first modification of the present embodiment will be described with reference to FIG. The first modified example differs from the above-described embodiment in that an urging structure, which is not provided in the present embodiment, is provided. This urging structure is constituted by a coil spring 31 for urging the distal arm 26 in the direction in which it extends with respect to the proximal arm 24. The coil spring 31 is connected to the open end of the extension arm 28 and the proximal arm. 24 is provided between the base portion and the base portion. By providing the coil spring 31, the head portion 27 is elastically pressed in the direction of the wall surface 3a of the crushing chamber, and the pressing force gives an additional impact force to the object to be crushed, thereby improving the crushing efficiency. .

(Second Modification of the Present Embodiment) A second modification of the present embodiment will be described with reference to FIG. The second modified example differs from the above-described embodiment in the structure of the head portion. That is, the head portion 37 used in the second modification is pivotally connected to the distal arm portion 26.
And a roller 35 rotatably supported by the roller. With this configuration, the inner wall 3a of the crushing chamber is formed.
When the head 37 (the roller 35) comes into contact with the roller 37, the impact of the rotation of the roller 35 is reduced, so that the wear of the head 37 itself as well as the inner wall 3a of the crushing chamber can be reduced. In the second modified example, the above-described urging structure is also provided, so that the pulverization efficiency can be improved.

(Third Modification of the Present Embodiment) A third modification of the present embodiment will be described with reference to FIG. The feature of the third modified example lies in the structure for raising and lowering the rotating shaft 11. That is, the base bearing 12 that supports the rotating shaft 11 is
, One end of the rotating plate 51 is pivotally connected to a rotation supporting member 52 by a rotating pivot 53, and the other end is pivotally connected to a lifting member 54 by a lifting pivot 55. Lifting member 5
Numeral 4 is configured to elevate the elevating arm 56, and the elevating arm 56 elevates the rotating plate 51 so as to rotate (rotate in both directions) about the rotating pivot 53 to elevate and lower the base bearing 12. It has become.

The upper end 51a of the rotating plate 51 is bent in the direction opposite to the paper surface of FIG.
The drive motor 15 is mounted and fixed on the position a. That is, the rotation shaft 11 moves up and down by the rotation of the rotation plate 51, and the drive motor 15 moves up and down together with the rotation plate 51. As a result, the distance between the drive motor 15 and the base bearing 12 does not change even when the rotating shaft 11 is moved up and down.
2 can be omitted. In the third modification, the elevating structure of the rotating shaft 11 described above is
Although it is also provided on the side, the structure is the same as the structure on the base end bearing 12 side, so the description thereof will be omitted.

[0031]

According to the rotary crusher according to the invention described in each claim, the wear of the head portion due to the contact with the inner wall of the crushing chamber can be minimized without lowering the crushing efficiency, and If necessary, a gap can be formed between the head portion and the inner wall of the crushing chamber.

[Brief description of the drawings]

FIG. 1 is a schematic side view of a rotary crusher.

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

FIG. 3 is a front view showing the operation of the head unit.

FIG. 4 is a diagram in which a gap is formed between a head portion and a wall surface of a crushing chamber.

FIG. 5 is a diagram showing a first modification.

FIG. 6 is a diagram showing a second modification.

FIG. 7 is a diagram showing a third modification.

FIG. 8 is a view showing a conventional hammer part.

FIG. 9 is a view showing a conventional hammer part.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Rotary crusher 24 Base arm part 2 Input port 25 Axis 3 Grinding chamber 26 Tip arm part 4 Discharge port 27 Head part 5 Installation base 51 Rotating plate 6 Support roller 53 Rotating pivot 7 Driven pulley 54 Lifting member 8 Drive Motor 55 elevating pivot 11 rotating shaft 56 elevating arm 12 base bearing 13 tip bearing 14 driven pulley 15 driven motor 16 support base 17 support base 18 elevating arm 20 base 21 base

Claims (5)

[Claims] 1. A grinding chamber having a cylindrical inner wall surface, a rotating shaft protruding into the grinding chamber, a base arm attached to the rotating shaft, and at least a direction opposite to a rotating direction of the rotating shaft. A rotary crusher comprising: a tip arm attached to the open end of the base arm so as to be bendable; and a head attached to the open end of the tip arm. The angle A formed by the axis of the end arm portion and the extended axis of the tip arm portion on the rotation direction delay side of the rotating shaft is 90 ≦ A <180 in a state where the head portion is not in contact with the wall surface of the grinding chamber. A rotary crusher characterized in that a holding structure for holding the distal arm portion so as to have a certain degree is formed between the base arm portion and the distal arm portion. 2. An extension arm extending from the bent portion in a direction opposite to the head of the distal arm, and the holding structure is provided on the base arm for abutting the extension arm. The rotary crusher according to claim 1, further comprising a stopper. 3. The rotary crusher according to claim 1, wherein a relative position between the crushing chamber and the rotation shaft is configured to be changeable. 4. A biasing structure for biasing the distal arm in a direction in which the distal arm extends to the proximal arm is formed between the distal arm and the proximal arm. The rotary crusher according to any one of claims 1 to 3, wherein: 5. The rotary crusher according to claim 1, wherein said head portion includes a roller rotatably supported.