JP2007330944A - Impact grinder - Google Patents

Impact grinder Download PDF

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JP2007330944A
JP2007330944A JP2006168814A JP2006168814A JP2007330944A JP 2007330944 A JP2007330944 A JP 2007330944A JP 2006168814 A JP2006168814 A JP 2006168814A JP 2006168814 A JP2006168814 A JP 2006168814A JP 2007330944 A JP2007330944 A JP 2007330944A
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blade
rotary
casing
fixed
fixed blade
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JP2006168814A
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JP4737765B2 (en
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Shuko Sugiyama
周宏 杉山
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Sugiyama Juko Kk
杉山重工株式会社
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Abstract

<P>PROBLEM TO BE SOLVED: To provide an impact grinder capable of easily producing ground matter having a particle distribution desired by a user, regardless of the type or size of grinding raw material. <P>SOLUTION: The impact grinder 1 is provided with, as shown in Fig. 1, a casing 4 having a supply port 2 and a discharge port 3; a plurality of fixed blades 5 provided in the casing, disposed on a concentric circle and horizontally protruded; a plurality of rotary blades 6 provided facing the fixed blades 5, disposed on a concentric circle different from that of the fixed blades and horizontally protruded; and a rotary plate 7 rotatably provided in the casing 4, and is composed to allow adjustment of a distance between the fixed blades 5 and rotary blades 6. This configuration allows a user to appropriately adjust the distance between the fixed blades 5 and rotary blades 6, and to produce ground matter having a desired particle distribution. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to an impact pulverizer suitable for use in pulverizing minerals, plastics, grains, and the like.
As a conventional impact type pulverizer, for example, the one disclosed in JP-A-11-128758 is used.
As shown in FIG. 7, the impact type pulverizer 50 includes a casing 53 having a supply port 51 and a discharge port 52, a multi-concentric circle provided in the casing 53, and protruding in the horizontal direction. A plurality of fixed blades 54 and a plurality of rotary blades 55 provided on the multi-line concentric circle different from the fixed blades 54 so as to face the fixed blades 54 and projecting in the horizontal direction are provided. And a rotating disc 56 provided in a possible manner.
  Specifically, as shown in FIG. 8, the casing 53 is formed in a substantially semicircular shape when viewed from the side, and is provided with a supply port 51 extending obliquely upward on one side, and the pulverized raw material is casing. 53 is configured to be installable. Moreover, the lower end surface of the casing 53 is open and serves as a discharge port 52 for pulverized material.
  On the inner wall of the casing 53, as shown in FIG. 7 or FIG. 9, a plurality of cylindrical fixed blades 54 are provided which are arranged on a multi-line concentric circle and project in the horizontal direction. On the other hand, a rotating blade 55 is disposed in the casing 53 so as to face the fixed blade 54.
  The rotary blade 55 is composed of a plurality of cylindrical bodies that are arranged on a multi-row concentric circle different from the fixed blade 54 and protrude in the horizontal direction. The rotary blade 55 is provided on a rotary disk 56 disposed in the casing 53, and the rotary disk 56 is fixed to a rotary shaft 57 that extends outward from the casing 53. A pulley 58 is attached to one end of the rotary shaft 57, and the rotary shaft 57 and the rotary disc 56 are rotated via the pulley 58 by driving of a motor (not shown), and the rotary blade 55 is fixed accordingly. It is configured to rotate at high speed between the valleys of the blade 54.
When the pulverized raw material is supplied from the supply port 51, the pulverized raw material is introduced near the center of the rotating disk 56 and falls by gravity toward the discharge port 52 provided below. In this process, the pulverized raw material is configured to collide with the rotary blade 55 and the fixed blade 54 rotating at high speed and pulverize as shown in FIG.
JP 11-128758 A
  By the way, in recent years, in the field of manufacturing materials that support advanced technologies such as magnetic materials such as electronic materials and fine ceramics, powders with a sharp particle size distribution (powder that is extremely rough or fine with respect to the desired particle size) The demand for manufacturing is increasing. Along with such a demand, an impact pulverizer that can easily adjust the pulverized raw materials of various types and sizes to a desired particle size distribution on the user side is desired.
  In this regard, in the conventional impact type pulverizer 50, the dimensions of the feed material supplied by the user are adjusted in advance, or the rotational speed of the rotating disk 56 is increased so that the fixed blade 54, the rotary blade 55, the pulverized raw material, We responded by increasing the number of collisions.
  However, it is necessary to be able to pulverize to a desired particle size distribution regardless of the size and type of the feedstock, and in the method of increasing the rotational speed of the rotating disk 56, excessive pulverization (becomes finer than the target particle size). In any case, no conventional impact pulverizer has a mechanism that can easily adjust the particle size distribution of the pulverized product on the user side.
  The present inventor has come up with the present invention by paying attention to the need for a mechanism capable of adjusting the number of collisions between the fixed blade or the rotary blade and the pulverized raw material in order to adjust the particle size distribution of the pulverized product. That is, an object of the present invention is to provide an impact pulverizer that can easily produce a pulverized product that exhibits a desired particle size distribution on the user side regardless of the type and size of the pulverized raw material.
  In order to solve the above-mentioned problems, a casing having a supply port and a discharge port, a plurality of fixed blades provided in the casing and arranged concentrically and projecting in a horizontal direction, and opposed to the fixed blades. Provided with a plurality of rotary blades arranged on concentric circles different from the fixed blade and projecting in the horizontal direction, and a rotary plate provided rotatably in the casing, It is an impact type pulverizer characterized in that the distance from the rotary blade can be adjusted.
  The impact pulverizer includes a first screwing portion provided in the casing, and a fixed blade moving body having a second screwing portion screwed with the first screwing portion, and the fixed blade It is preferable that the moving body is configured to be able to reciprocate by advancing or retreating along the screwing of the first screwing part and the second screwing part. It is preferable that each of the fixed blade and the rotary blade is formed in a tapered shape toward the tip side.
According to the first aspect of the present invention, a pulverized product having a desired particle size distribution can be easily produced on the user side regardless of the type and size of the pulverized raw material.
According to the invention described in claim 2, the impact type pulverizer having the effect of the invention of claim 1 can be configured with a simple structure.
According to the invention described in claim 3, the separation distance between the fixed blade and the rotary blade is substantially equal at any part, and the number of collisions between the fixed blade and the pulverized raw material is also more uniform, and the pulverized product having a desired particle size. Can be adjusted more.
  The impact type pulverizer of the present invention is configured such that the gap between the fixed blade and the rotary blade is adjustable, so that a pulverized product having a desired particle size distribution can be easily produced on the user side.
  FIG. 1 is a longitudinal sectional view of an embodiment of an impact pulverizer according to the present invention, and FIG. 2 is a partially sectional perspective view showing the form of a rotary blade of the impact pulverizer shown in FIG. 3 is a front view and a sectional view showing the form of the rotary blade of the impact pulverizer shown in FIG. 1, and FIG. 4 is a longitudinal sectional view showing the operation of the impact pulverizer shown in FIG. 5 and 6 are partial longitudinal sectional views showing the operation of the impact type pulverizer shown in FIG.
  As shown in FIG. 1, the impact type pulverizer 1 of this embodiment includes a casing 4 having a supply port 2 and a discharge port 3, a multi-concentric circle provided in the casing 4 and arranged in a horizontal direction. A plurality of fixed blades 5 projecting in the same direction, and a plurality of rotary blades 6 provided opposite to the fixed blade 5 and arranged on a multi-row concentric circle different from the fixed blade 5 and projecting in the horizontal direction. The rotating plate (rotating disc) 7 is provided so as to be rotatable at a distance between the fixed blade 5 and the rotating blade 6 so that the gap (separating distance in the horizontal direction) can be adjusted. Hereinafter, each configuration will be described in detail.
  The casing 4 pulverizes the pulverized raw material therein, is formed in a substantially semicircular shape when viewed from the side, and includes a supply port 2 penetrating the center of the casing 4 from one side as shown in FIG. Yes. A screw feeder 8 is provided in the supply port 2, and this screw feeder is configured to supply the pulverized raw material to the vicinity of the center of the fixed blade 5 or the rotary blade 6 described later. Moreover, the lower end surface of the casing 4 is open and serves as a discharge port 3 for pulverized material.
  In the casing 4, as shown in FIG. 1, a fixed blade moving body provided with a plurality of fixed blades 5 arranged in multiple rows (in this embodiment, four rows) concentric circles and radially and projecting in the horizontal direction. 9 is provided. The fixed blade moving body 9 includes a disk having the fixed blade 5 disposed on one surface side, and a boss 12 provided at the center of the disk and extending outward from the casing 4.
  In the casing 4, a plurality of rows arranged concentrically and radially in a multi-row (four rows in this embodiment) provided opposite to the fixed blade 5 and projecting in the horizontal direction are different from the fixed blade 5. A rotating plate 7 having a rotating blade 6 is provided. The rotating plate 7 is rotatably provided in the casing 4, and the rotating blade 6 is configured to rotate with the rotation of the rotating plate 7. In addition, since the rotary blades 6 are arranged on a multi-row concentric circle different from the fixed blades 5 and are arranged so as to rotate at valleys between the fixed blades 5 arranged in parallel in the radial direction, The fixed blade 5 and the rotary blade 6 do not come into contact with each other when the rotary blade 6 rotates.
  As a rotation mechanism of the rotary blade 6, a rotary shaft 10 extending outward from the casing 4 is provided on the other surface side of the rotary plate 7 provided with the rotary blade 6, and attached to one end of the rotary shaft 10. The rotary plate 7 and the rotatory rotary blade 6 are configured to rotate at high speed by a motor drive via a pulley (not shown). Then, when the pulverized raw material is supplied from the supply port 2, the pulverized raw material is introduced near the center of the rotating plate 7 and falls by gravity toward the discharge port 3 provided below. In this process, the pulverized material collides with the rotary blade 6 and the fixed blade 5 that rotate at high speed and is pulverized.
  The characteristic of the impact type pulverizer 1 is that the distance between the fixed blade 5 and the rotary blade 6 in the horizontal direction is adjustable. Specifically, as shown in FIG. 1, the impact pulverizer 1 is provided on the outer surface of the first screwing portion 11 provided on the inner surface of the boss insertion port of the casing 4 and the boss 12 of the fixed blade moving body 9. It has the 2nd screwing part 13 formed and screwed with the 1st screwing part 11. Further, a worm wheel 14 is fixed to the end of the boss 12 of the fixed blade moving body 9, and when the worm shaft 15 is turned in the direction of the arrow h in FIG. The fixed blade moving body 9 moves backward with respect to the rotating plate 7 along the screwing with the screwing portion 13, and the horizontal separation distance between the fixed blade 5 and the rotating blade 6 increases. On the other hand, when the worm shaft 15 is rotated in the direction of arrow i in FIG. 4, the fixed blade moving body 9 advances toward the rotating plate 7 along the screwing of the first screwing part 11 and the second screwing part 13. In addition, the horizontal separation distance between the fixed blade 5 and the rotary blade 6 is configured to be small.
  As described above, the impact pulverizer of the present invention can adjust the number of times the pulverized raw material collides with the fixed blade and the rotary blade by appropriately adjusting the separation distance between the fixed blade and the rotary blade. In addition, by changing the separation distance between the fixed blade and the rotary blade, a pulverized product having a desired particle size distribution can be easily produced on the user side regardless of the type and size of the pulverized raw material.
  Further, as shown in FIG. 2 or FIG. 3, the rotary blade 6 of this embodiment is formed in a tapered shape toward the tip side. Specifically, the rotary blade 6 of this embodiment is formed in a shape having a substantially quadrangular pyramid tip as a flat surface, and the fixed blade 5 is also formed in the same shape. By making the rotary blade 6 and the fixed blade 5 have such a tapered shape, as shown in FIG. 5 or FIG. 6, the separation distance between the fixed blade 5 and the rotary blade 6 is substantially uniform at any part, and pulverized with them. The number of collisions with the raw material is also more uniform, and a pulverized product having a desired particle size can be further adjusted. FIG. 5 is a diagram showing a state in which the separation distance between the fixed blade 5 and the rotary blade 6 shown in FIG. 4 is reduced, and the separation distance between the fixed blade 5 and the rotary blade 6 is almost a at any part. is there. On the other hand, FIG. 6 is a diagram showing a state in which the separation distance between the fixed blade 5 and the rotary blade 6 shown in FIG. 1 is increased, and the separation distance between the fixed blade 5 and the rotary blade 6 is almost b at any part. is there.
Next, the test by the impact type pulverizer of the present invention and the test results will be described.
(1) The impact type pulverizer used in the test has an outer diameter (φ) of the rotating plate: 300 mm, the number of rows of fixed blades and rotating blades arranged concentrically: 4 rows (with the above-described impact type pulverizer 1 and Similarly, the height of the fixed blade and the rotary blade: 22 mm, the adjustable range of the separation distance between the fixed blade and the rotary blade: 2 to 12 mm, and the number of rotations of the rotary blade: 1800 min-1.
(2) The pulverized raw material had a product name: hydrogen brittle neosium alloy, and an average particle size before pulverization: 120 μm.
(3) Operating conditions are: supply amount: 60 kg / Hr, separation distance between fixed blade and rotating blade: 3 conditions of 12 mm, 6 mm, and 2 mm, grinding atmosphere: under argon gas atmosphere, analysis: laser analysis / scattering particle size distribution measurement I went with a vessel.
(4) Test results When the separation distance between the fixed blade and the rotary blade was 12 mm, the measurement results shown in Table 1 below were obtained. When the distance between the fixed blade and the rotary blade was 6 mm, the measurement results shown in Table 2 below were obtained. Furthermore, when the separation distance between the fixed blade and the rotary blade was 2 mm, the measurement results shown in Table 3 below were obtained.
  When the separation distance between the fixed blade and the rotary blade is 12 mm, as shown in Table 1, the particle diameter increases from the minimum particle diameter of 1.981 μm to the maximum particle diameter of 77.34, as shown in the graph. The particle size distribution was wide in the lateral direction (width direction), and the average particle size (D50μ) of the pulverized product was 10.71 μm.
  When the separation distance between the fixed blade and the rotary blade is 6 mm, as shown in Table 2, the particle diameter is expanded from the minimum particle diameter of 2.269 μm to the maximum particle diameter of 77.34. Although it was the same, as shown in the graph, the particle size distribution was extended in the vertical direction (quantity direction) from the case of 12 mm, and the average particle size (D50μ) of the pulverized product was 9.50 μm.
  Further, when the separation distance between the fixed blade and the rotary blade is 2 mm, as shown in Table 3, the particle diameter is from the minimum particle diameter of 2.269 μm to the maximum particle diameter of 19.904, as shown in the graph. In addition, the particle size distribution was narrow in the horizontal direction (width direction) and extended most in the vertical direction (quantity direction). The average particle size (D50μ) of the pulverized product was 6.73 μm.
  From the above measurement results, the particle size distribution of the pulverized product can be adjusted by adjusting the separation distance between the fixed blade and the rotary blade. That is, if the separation distance between the fixed blade and the rotary blade is increased, the particle size distribution of the pulverized product is wide. It was confirmed that when the distance between the fixed blade and the rotary blade was reduced over the range, the particle size distribution of the pulverized product was narrowed, and a pulverized product containing more pulverized product having a desired particle size could be produced.
It is a longitudinal cross-sectional view of one Example of the impact-type crusher of this invention. It is the partial cross section perspective view which showed the form of the rotary blade of the impact-type crusher shown in FIG. It is the front view and sectional drawing which showed the form of the rotary blade of the impact-type crusher shown in FIG. It is the longitudinal cross-sectional view which showed the effect | action of the impact type grinder shown in FIG. It is the fragmentary longitudinal cross-section which showed the effect | action of the impact type grinder shown in FIG. It is the fragmentary longitudinal cross-section which showed the effect | action of the impact type grinder shown in FIG. It is a longitudinal cross-sectional view of the conventional impact-type crusher. It is a partial cross section left view of the impact type grinder shown in FIG. It is a disassembled perspective view of the impact type grinder shown in FIG. It is the schematic diagram which showed the effect | action of the impact type grinder shown in FIG.
Explanation of symbols
DESCRIPTION OF SYMBOLS 1 Impact type pulverizer 2 Supply port 3 Discharge port 4 Casing 5 Fixed blade 6 Rotating blade 7 Rotating plate 8 Screw feeder 9 Fixed blade moving body 10 Rotating shaft 11 First screwing portion 12 Boss 13 Second screwing portion 14 Warm wheel 15 Worm shaft

Claims (3)

  1.   A casing provided with a supply port and a discharge port, a plurality of fixed blades provided in the casing and arranged concentrically and projecting in a horizontal direction, and the fixed blade provided opposite to the fixed blades A plurality of rotary blades arranged on different concentric circles and projecting in the horizontal direction, and having a rotary plate rotatably provided in the casing; and a separation distance between the fixed blade and the rotary blade is An impact type pulverizer characterized by being configured to be adjustable.
  2.   The impact pulverizer includes a first screwing portion provided in the casing, and a fixed blade moving body having a second screwing portion screwed with the first screwing portion, and the fixed blade The impact type pulverizer according to claim 1, wherein the movable body is configured to reciprocate by moving forward or backward along the screwing of the first screwing part and the second screwing part.
  3. The impact type pulverizer according to claim 1 or 2, wherein each of the fixed blade and the rotary blade is formed in a tapered shape toward the tip side.
JP2006168814A 2006-06-19 2006-06-19 Impact crusher Active JP4737765B2 (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2073255A2 (en) 2007-12-21 2009-06-24 Semiconductor Energy Laboratory Co., Ltd. Diode and display device comprising diode

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5337796A (en) * 1976-09-17 1978-04-07 Du Pont Method of making polyamide containing pigment
JPS56118738A (en) * 1980-02-21 1981-09-17 Tanaka Kikinzoku Kogyo Kk Palladium catalyst
JPS5895554A (en) * 1981-12-01 1983-06-07 Shigetaka Morino Sludge crusher
JPH0354743A (en) * 1989-07-24 1991-03-08 Pioneer Electron Corp Optical disk
JPH11128758A (en) * 1997-10-23 1999-05-18 Fudoo Kk Impact type crusher
JP2000334325A (en) * 1999-05-25 2000-12-05 Kenji Hamamura Chaff grinding apparatus
JP2001162187A (en) * 1999-12-06 2001-06-19 E & A:Kk Structure for mounting crushing tooth in crusher
JP2006167515A (en) * 2004-12-13 2006-06-29 Turbo Kogyo Co Ltd Pulverizer

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5337796A (en) * 1976-09-17 1978-04-07 Du Pont Method of making polyamide containing pigment
JPS56118738A (en) * 1980-02-21 1981-09-17 Tanaka Kikinzoku Kogyo Kk Palladium catalyst
JPS5895554A (en) * 1981-12-01 1983-06-07 Shigetaka Morino Sludge crusher
JPH0354743A (en) * 1989-07-24 1991-03-08 Pioneer Electron Corp Optical disk
JPH11128758A (en) * 1997-10-23 1999-05-18 Fudoo Kk Impact type crusher
JP2000334325A (en) * 1999-05-25 2000-12-05 Kenji Hamamura Chaff grinding apparatus
JP2001162187A (en) * 1999-12-06 2001-06-19 E & A:Kk Structure for mounting crushing tooth in crusher
JP2006167515A (en) * 2004-12-13 2006-06-29 Turbo Kogyo Co Ltd Pulverizer

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2073255A2 (en) 2007-12-21 2009-06-24 Semiconductor Energy Laboratory Co., Ltd. Diode and display device comprising diode

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