JPH0631249A - Separating device - Google Patents

Abstract

PURPOSE:To provide a separating device of maintenance free, thereby enabling stable separation of good passage efficiencies by separating matters which can pass through the gap between the side surface and outer periphery of a disk and an insertion plate and matters which cannot pass therethrough to eliminate clogging. CONSTITUTION:A separating device includes at least one rotary disk 1 and a fixed insertion plate 2 in a case and gaps 5, 3 are provided between the side surface of the disk 1 and the plate 2 and between the outer periphery of the disk 1 and the plate 2 respectively, whereby matters which can pass through the gaps and matters which cannot pass through the gaps are separated. That is, the disk 1 is rotated to cause a flow in a direction opposite to that of the passage of matters so that matters 6 to be separated which are brought toward the gaps 3,5 and which cannot pass through the gaps are expelled from the gaps 3,7 so as to be moved away from the gaps 3,5, thereby preventing clogging of the gaps 3,5, whereby the gaps 3,5 are always maintained in a normal state.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION The present invention utilizes a gap to
The present invention relates to a maintenance-free separation device that separates a passing material and a non-passing material from each other without clogging. The present invention also relates to a separation device suitable for a media separator of a media agitation type pulverizer.

[0002]

2. Description of the Related Art As a separating device, a sieving separation based on a shape is most often used, but there are other separating devices based on, for example, weight, velocity, magnetic force, chemical property, medium and the like.

Conventionally, a shape-based separating and classifying machine utilizing the size of voids such as a screen, a strainer, and a filter has been used in various industries. The screen is a typical sieving method, and the voids are meshes, slits,
There is a wide range of separation and classifiers with gaps and sizes ranging from micron order and sub-micron order sizes to meter order sizes.

The mesh is woven and the mesh size is opened, the slit is a round type, a square type, a square type, etc., and the gap is sieved according to its shape and gap width. If a separation classifier or sieving machine that utilizes these voids is used continuously (hereinafter referred to as a separation device), there is a problem that it gradually becomes clogged over time.

The media separator of a media agitation type crusher also has a problem of clogging with the lapse of time in continuous operation. Media agitation type pulverizers such as sand mills and sand grinders are used for both dry and wet processes,
It is widely used in inks, pigments, minerals and foods.
Recently, it is also used in electronics such as magnetism, electronics, and light, and high-tech industries such as new ceramics. In particular, remarkable progress has been made in recent years because of its extremely excellent ability as a method for obtaining an ultrafine material of micron order or submicron order.

In the paper industry, the use of the media agitation type pulverizer makes the pigments for papermaking and coating finely powdered, and makes finer materials such as dyes, color developers and auxiliaries for special recording paper, and particle size adjustment. It has been used more and more.

In a media agitation type crusher such as a sand grinder, an advanced device such as a wedge wire screen is used as a media separator for separating a crushed material and a crushed media, but at present, even if a clogging is less likely to occur, Due to cracks and wear of the crushed media, crushed media, and media that have become smaller in size to a certain extent, the media will gradually become clogged over time when used continuously.

[0008]

The separation device utilizing the above voids can perform good separation if the voids are in a normal state, but all of them cause clogging with the lapse of continuous use time, and gradually become clogged. The efficiency decreases. And finally it stops the flow.

Since the media agitation type crusher is used for micronization such as micron order or submicron, the diameter of the crushed media has become extremely fine. At the same time, the voids in the media separator that separates the fine media are also becoming fine, and the efficiency associated with clogging becomes a problem.
At present, there is a demand in the industry for the development of a separation device having stable passage separation performance and passage separation efficiency.

[0010]

SUMMARY OF THE INVENTION According to the present invention, there is provided at least one rotating disk and a fixed insert plate in a case, and the disk is passed by a side surface of the disk and a gap between the disk outer peripheral surface and the insert plate. And a device which does not pass through the device.

Further, in the above separating device, the separating device is a media separator of a media agitation type pulverizer.

[0012]

The present invention has at least one rotating disk and a fixed insert plate in the case, and separates the passing plate and the non-passing plate by the gap between the disk side face and the disk outer peripheral surface and the insert plate. The separation device is characterized by

This separating device basically utilizes a place where no clogging occurs by intentionally creating a place where clogging does not occur and a place where clogging occurs in the gap between the rotating disk and the insert plate. To increase the passage efficiency and make the passage efficiency constant. Then, the separated substance that does not pass through is collected by utilizing the place where the clogging occurs.

That is, by rotating the disc, a flow in the direction opposite to the passing direction is caused to push back the separated substance which does not pass through coming into the gap with the insert plate from the gap, and separates the separated substance from the gap. To prevent clogging and create a place where clogging does not occur,
Always maintain a normal gap. The normal gap can increase the passage efficiency and keep the passage efficiency constant.

On the other hand, when the rotation of the disk comes to the position opposite to the above-mentioned position of the rotation axis, the flow direction is the same as the passage direction, so that the separated substance acts so as to approach the gap and clogging occurs. to make. The separation material approaching the gap is blocked by the veneer and becomes clogged, the flow passing through is weakened, and the separation material remains in a certain deposition state.

Here, when the above-mentioned portion of the insert plate, that is, where the flow direction of the rotary disk is directed in the passing direction, the insert plate is angled with respect to the horizontal line,
The separated substances that have approached the gap are driven back toward the outer peripheral direction of the disk according to the angle of the insert plate, and are collected and collected on the inner wall of the case.

As described above, the separation device of the present invention is a maintenance-free separation device that does not cause clogging with time even when used continuously.

[0018]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An example of the present invention will be described in more detail with reference to the drawings. FIG. 1 is a front view of the main points of the separation device of the present invention, FIG. 2 is a side view of the same points, and FIG. 3 is a perspective view of the same main points for explanation.

A gap 3 between the rotary disk 1 and the insert plate 2
Numerals 5 and 5 are rollers for passing the flow, and are installed inside the case 4. Separations larger than the width of the gap do not pass. The passing flow is performed by a pump or the like not shown. The separated product is collected without passing through this gap.

The gaps of the gaps 3 and 5 are the openings for opening in the screen, and are set in accordance with the requirements of the passing substance and the separated substance. And gaps 3 and 5
May have the same gap size or different gap sizes as long as the purpose requires an effective gap width.

The separating apparatus of the present invention can be used for any purpose, but is particularly suitable for a media separator of a media agitating and grinding machine. In this case, make the gap between the rotating desk and the insert plate 7/10 to 3 of the minimum diameter of the grinding media.
/ 10 range, more preferably 6/10 to 4/10 range. Within this range, the passage efficiency and the separation efficiency of the grinding media are optimal. If the gap is widened so as to exceed 7/10 of the minimum diameter of the grinding media, the passage efficiency is improved, but wear of the grinding media limits the long-term operation. On the other hand, a narrow gap width of less than 3/10 is not preferable because the passage efficiency decreases.

The rotating disk of the present invention rotates in the direction of the arrow in FIG. On the A side in FIG. 1, the rotation direction of the disk is opposite to the passing flow, and acts to suppress to some extent what flows through the gap with the insert plate to pass. Therefore,
The disc that rotates at an appropriate number of revolutions tends to push the separated material out of the gap with the insert plate, and because the separated material is ejected, the gap does not always deteriorate the ability to pass while maintaining the normal state. . The number of rotations of the disk is set by the balance between this effect and passage efficiency.

The rotation number of the disk is 0.1 to 1000 r
It is preferably in the range of pm. If it is less than 0.1 rpm, the effect of rotation cannot be obtained, and high speed rotation exceeding 1000 rpm is not necessary.

On the B side in FIG. 1, the rotating disk is in the same direction as the passing flow direction. Contrary to the A side, the B side is in the direction of biting the separated material, and the B side is clogged. But,
When it becomes clogged to some extent, the passing flow stops,
The moderately deposited isolate is recovered.

Therefore, the device of the present invention is provided on the B side insert plate,
As shown on the B side of the insert plate 2 in FIG. 1, the line on the lower side of the insert plate (the line that stops the separated object) is angled so as to be oblique to the horizontal line at the center of the disk. Due to the angle of the insert plate, the accumulated separated substances move to the case 4 side and fall downward along the inner surface of the case. The angle of the insert plate may be in the range of 0 to 90 degrees with respect to the horizontal line, but is not particularly limited. However, it is necessary to calculate that the gap area with the side surface of the disk is reduced when the steep angle is 45 degrees or more.

In addition to the configuration shown in FIG. 1, the length of the arc formed by the gap on the B side by the gap between the outer periphery of the disc and the insert plate may be the same in relation to the A side. In this case, the B side of FIG. 2 has an angle only to the lower line, but it is also possible to use an insert plate that is parallel to the lower line and has an upper line. Further, on both the A side and the B side, the shorter the length of the arc of the gap between the disc outer periphery and the insert plate, the better the passage property.
It is desirable to minimize the length of the arc even in at least a part of the lower side. For example, a round shape, a wedge shape, or the like may be used so that the cap on the upper side (the side on which the passed one exits) is wider than the lower side.

Similarly, as for the passage length of the gap 5 formed by the side surface of the disc and the insert plate shown in FIG. 2, at least a part of the lower side with respect to the lower line can be the shortest length of the gap. desirable.

As shown in FIG. 1, the lower line of the insert plate can have a larger passing area as it is closer to the center line of the disc. Therefore, it is desirable to consider increasing the passing area as much as possible.

It should be noted that FIGS. 1 to 3 show only the essential points, and in a practical device, a unit is formed by increasing the number of disks and insert plates so as to satisfy the required passing area. And this unit can also be arranged in a plurality. Further, it may be arranged in a lateral or diagonal flow depending on the purpose of use.

The gap between the disk and the insert plate used in the present invention is desired to be as small as possible for a fine object, but there is a limit in actual machining technology. The precision of the bearing used for the disc is 1.5 / 1000 mm as the current highest precision. The processing accuracy of the disk is 5/1000 mm. Therefore, at present, the minimum fine gap is 0.01 mm.

This gap is, for example, 3 / of the media diameter required for the separating apparatus of the present invention when the grinding media diameter is 0.03 mm when the paint material for thermal recording paper in the paper manufacturing industry is finely ground by a sand grinder. A gap of 0.01 mm of 10 can be satisfied. The smallest pulverized fine particles obtained by this pulverization have an average particle diameter of 0.1μ.
Ultrafine atomization of m is also possible.

[0032]

Industrial Applicability The present invention solves the drawbacks of the conventional separators which have the problem of clogging and provides a maintenance-free separator. The ultrafine particles can be efficiently separated by a micro gap from the micron order to the submicron order and can be stably separated and passed for a long time, which is suitable for a media separator of a media stirring crusher. It is ideal for separating fines from the minerals industry, paints and inks industry, chemicals, food industry and paper industry. It can also be used effectively for new ultrafine powder materials in the recent electronics industry and new ceramic industry.

[Brief description of drawings]

FIG. 1 is a front view showing the main points of a separation device of the present invention.

FIG. 2 is a side view showing the main points of the separation device of the present invention.

FIG. 3 is a perspective view showing essential points for explaining a separation device of the present invention.

[Explanation of symbols]

 1 Rotating desk 2 Insert plate 3 Gap between rotating disk outer peripheral part and insert plate 4 Case 5 Gap between rotating disk side part and insert plate 6 Separation product 7 Flow of what passes

Claims (4)

[Claims] 1. A case has at least one rotating disk and a fixed insert plate, and a gap between the side surface of the disk and the outer peripheral surface of the disk and the insert plate separates the passing plate and the non-passing plate. Separation device characterized by the above. 2. The separation device according to claim 1, wherein the separation device is a media separator of a media agitation type pulverizer. 3. The separating apparatus according to claim 2, wherein the gap between the side surface of the disk and the outer peripheral surface of the disk and the insert plate is 3/10 to 7/10 of the diameter of the medium. 4. The number of revolutions of the disk is 0.1 to 1000 rp.
The separation device according to claim 1, wherein m is m.