JP2016073957A - Self-tapping member of vibration screen - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a self-tapping member of a vibration screen capable of preventing effectively clogging of the screen.SOLUTION: A self-tapping member 10 of a vibration screen includes a tapping body 20 capable of tapping on a screen surface upon vibration of the vibration screen, and a core body 30 made of a material using a metal. In this case, The core body 30 has the center of gravity arranged on an eccentric position of the center of gravity of the tapping body 20.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a tapping member for a vibration sieve used for preventing clogging of a screen provided in a vibration crushing machine of a crushed stone factory or a raw material selection vibration sieve used in a chemical factory.

  Vibrating sieves are used for the purpose of selecting various types of granular materials by particle size in civil engineering and building material factories and chemical factories.

  FIG. 4 is an explanatory view of a vibration sieve. The structure of the vibration sieve machine 1 is such that the vibrator 2 vibrates a screen (screen sieve) 3 having a number of holes made of a wire mesh, a metal plate, resin, or rubber. The vibration sieving machine 1 performs sieving of powder on the screen 3 by repeatedly vibrating the screen 3 in the same plane that combines the vertical direction (vertical direction) and the horizontal direction (horizontal direction). .

The vibrations of the vibrator 2 include those that repeatedly move up and down, front and back (vertical and horizontal) on the same surface, and those that rotate on the same surface. In general, the vibration sieve machine 1 that is often used supports the screen 3 elastically on a pedestal installed on a foundation, and vibrates the screen 3 with the vibrator 2 that generates vibration on the screen 3. The body is supplied to classify the granular material and screen for foreign matter removal.
The vibration sieve machine 1 removes the clogged granular material in order to prevent this because the efficiency of the sorting operation decreases when the screen hole is clogged with the granular material by passing through the screen of various granular materials. A member 4 is used.
The tapping member 4 is accommodated between the screens 5 in the upper and lower layers, moves in the vibration direction between the screens 5 in the upper and lower layers by the vibration of the vibrating screen 1, and collides so as to hit the screen surface. Body clogging can be removed or prevented.

  The tapping ball disclosed in Patent Document 1 is provided with a plurality of protrusions on the peripheral surface of an elastic body, and the protrusions can enter a mesh to prevent clogging. Moreover, it can jump in a random direction compared with the structure without a protrusion, and can give an impact to every location.

  The tapping member disclosed in Patent Document 2 is provided with a large number of whiskers on the surface, and can prevent clogging by an external force acting between the strands constituting the screen.

  The tapping ball disclosed in Patent Document 3 has a structure in which the outer shell is made of a material having high wear resistance and the inner core is made of a material having high rebound resilience. The outer shell is not worn by the contact of the screen and the granular material, and the inner core has rebound resilience sufficient for removing clogging.

  The clogging prevention device disclosed in Patent Literature 4 is provided with an inclined sieve mesh and a ball support in the upper and lower portions in the sieve frame, and elastically accommodates a plurality of storage chambers formed by partitioning between the sieve mesh and the ball support. Contains a sphere of material. The sphere pedestal is formed by arranging a plurality of axes side by side, and has a curved surface on which the sphere is irregularly reflected during vibration.

Japanese Utility Model Publication No. 4-22078 Japanese Utility Model Publication No. 51-140275 JP-A-63-12382 Japanese Patent No. 2564109

  However, according to the tapping ball disclosed in Patent Document 1, there is no specific disclosure of the material, and if the protrusion is an elastic body, the protrusion is deformed at the time of collision and absorbs the impact at the time of collision. May be counterproductive. On the other hand, when the protrusion is hard, the impact that collides with the screen is increased and may be damaged.

  Further, according to the tapping member disclosed in Patent Document 2, in the case where the whiskers are made of a flexible material, the collision energy is alleviated by a large number of whiskers in order to prevent the powder particles from adhering to the screen surface, which is the original purpose. End up. Further, although a collision force by the tapping member main body can be obtained, there is a possibility that the beard is deformed and clogging between the strands of the screen cannot be prevented.

  Further, according to the tapping ball disclosed in Patent Document 3, when the deformation amount of the outer shell and the inner core due to the collision is different (for example, the deformation amount of the outer shell is small and the deformation amount of the inner core is large), The skin of the outer shell may be peeled off.

  Moreover, according to the apparatus disclosed in Patent Document 4, the radius of the curved surface of the ball cradle must be increased in order to cause repulsion. The specific radius of the curved surface is required to be larger than the radius of the sphere. If the elastic body is a sphere, a larger diameter is required. Increasing the size of the ball cradle increases the vertical dimension and makes the entire device larger. Moreover, the vibration weight of the vibration part increases and the power must be increased. Furthermore, an increase in the area occupied by the ball cradle increases the area that hinders the flow of powder that has passed through the sieve screen.

  In addition, in the conventional storage chamber provided between the slanted screen and the ball holder, the spheres gather at a low position during vibration and only hit the screen partially, and the screen is clogged at the high position of the screen. It was.

  Accordingly, an object of the present invention is to provide a tapping member for a vibration sieve that can effectively prevent clogging of the screen in view of the above-mentioned problems of the prior art.

As a first means for solving the above-mentioned problems, a tapping body capable of being struck on the screen surface when the vibrating screen vibrates, and a core body which is enclosed in the tapping body and made of metal as a material are provided. Another object of the present invention is to provide a tapping member for a vibrating screen.
As a second means for solving the above-mentioned problem, in the first means, a tapping member for a vibrating screen is provided, wherein the core body has a center of gravity arranged at an eccentric position of the center of gravity of the tapping body. It is to provide.

  As a third means for solving the above-described problem, in the first or second means, the core body has a specific gravity larger than that of the tapping body, and provides a tapping member for a vibrating sieve. is there.

  As a fourth means for solving the above-mentioned problem, in any one of the first to third means, the tapping body is made of silicon rubber or plastic resin as a material, and the vibrating sieve is tapped. It is to provide a member.

  As a fifth means for solving the above-mentioned problem, in the means according to any one of the first to fourth aspects, the tapping body is hollow, and the outer diameter of the core is smaller than the hollow. It is providing the tapping member of the vibration sieve characterized by this.

  As a sixth means for solving the above-mentioned problems, in the means according to any one of the first to fifth aspects, the tapping main body has any one of a spherical shape, an elliptical shape, and a polyhedron shape. It is in providing the tapping member of the vibration sieve which becomes.

According to the present invention as described above, since a metal is used for the core, a strong impact force can be applied to the sieve surface by vibration.
According to the present invention as described above, since the center of gravity of the tapping body and the core is decentered, the range of collision due to random movement on the screen during vibration of the vibrating screen is widened, and impact is applied to all locations on the screen surface. Thus, clogging can be effectively prevented.

According to the present invention as described above, since the specific gravity of the core is larger than that of the tapping body, the rigidity is increased, and a stronger collision force can be applied to the sieve surface by vibration than the tapping body alone.
According to the present invention as described above, since the core body is enclosed in the hollow tapping body, acceleration of the core body having a large specific gravity is more likely to act when the core body collides with the screen surface during vibration.

It is explanatory drawing of the tapping member of the vibration sieve of this invention. It is explanatory drawing of the tapping member of the vibration sieve of a modification. It is explanatory drawing at the time of the vibration of the tapping member of a vibration sieve. It is explanatory drawing of a vibration sieve.

  Embodiments of the tapping member of the vibration sieve of the present invention will be described in detail below with reference to the accompanying drawings.

[Tapping member 10 of vibrating sieve]
FIG. 1 is an explanatory view of the tapping member of the vibration sieve of the present invention. As shown in the figure, the tapping member 10 of the present invention is a member that strikes the screen surface and gives an impact when the vibrating screen vibrates, and has a tapping body 20 and a core 30 as the main basic components.

[Tapping body 20]
The tapping body 20 constitutes the outer shell of the tapping member 10. The tapping body 20 is made of a material that is lighter than the specific gravity of the core described later, and silicon rubber or plastic resin can be used as an example. The shape of the tapping body shown in FIG. 1 is a sphere. Although the outer diameter of the tapping body 20 depends on the size of the vibrating screen, in the present embodiment, it is set to about 50 mm as an example. Such a tapping body 20 is likely to generate a repulsive force due to elastic deformation at the time of collision.

[Core 30]
The core body 30 constitutes the inner core of the tapping member 10. The core body 30 is set so that the outer diameter is smaller than the outer diameter of the tapping body 20 and fits inside the tapping body 20. The core body 30 is made of a material having a specific gravity greater than that of the tapping body 20 described above, and, for example, steel (alloy steel, stainless steel, etc.) that becomes a metal can be adopted. Moreover, although the shape of the core 30 shown in FIG. 1 is a spherical shape, an elliptical shape or a polyhedral shape can also be adopted. The center of gravity of the core body 30 is not aligned with the center of gravity of the tapping body 20 and is disposed at a location that is an eccentric position. Specifically, at the time of manufacturing the tapping member, when the core body is disposed in the mold of the tapping body, it can be easily formed by disposing the center of gravity of the core body at a position eccentric from the center of gravity of the mold. .

Since the tapping member 10 of the vibration sieve having such a configuration decenters the center of gravity of the tapping body 20 and the core body 30, it jumps in a random direction on the screen during vibration of the vibration sieve machine and can be placed at any location on the sieve surface. It is possible to effectively prevent clogging by applying a uniform impact.
Further, since the specific gravity of the core body 30 is larger than that of the tapping main body 20, the weight of the entire member increases, and a stronger collision force can be given to the sieve surface than the tapping main body 20 by vibration.

[Modification]
FIG. 2 is an explanatory view of a tapping member according to a modification.
In the tapping member 10A of the vibration sieve of the modification shown in FIG. 4A, the shape of the tapping body 20A is an ellipse. The center of gravity of the core body 30 is not aligned with the center of gravity of the tapping main body 20A, but is disposed at a location that is an eccentric position. The elliptical tapping body 20A is more likely to increase the repulsive force and random movement due to elastic deformation than the spherical shape, and can give a stronger collision force to the screen surface.

  In the tapping member 10B of the vibrating screen shown in FIG. 5B, the shape of the tapping body 20B is a polyhedron (the tapping member shown in FIG. 3 is a regular tetrahedron). In addition, the tapping body 20B may employ a hexahedron, an octahedron, or the like. The center of gravity of the core body 30 is not located at the center of gravity of the tapping main body 20B, but is disposed at a location that is an eccentric position. The polyhedron tapping body 20B is more likely to generate a repulsive force due to elastic deformation than the spherical shape at the corners, and can apply a stronger impact force to the screen surface.

In the tapping member 10C of the vibrating screen shown in FIG. 10C, the tapping body 20C has a spherical outer shape. In addition, the outer shape of the tapping body 20C may be elliptical or a polyhedral hollow. The tapping body 20C has a structure in which the core body 30 is enclosed in a hollow interior. At this time, the outer diameter of the core 30 is set smaller than the hollow. For this reason, since the core body 30 can freely move in the space between the hollow body 30 and the core body 30, acceleration of the core body having a large specific gravity is more likely to act when it collides with the screen surface during vibration. The center of gravity of the core body 30 is not aligned with the center of gravity of the tapping main body 20C, but is arranged at a location that is an eccentric position.
In addition, the material of the tapping bodies 20A to 20C and the core body 30 of the modification is the same as that of the tapping member 10 shown in FIG.

  Even in the tapping members 10A to 10C of the vibration sieve of such a modification, the center of gravity of the tapping main body 20 and the core body 30 is decentered, so that the vibration of the vibration sieving machine is compared with the case where the tapping main body is spherical. Occasionally, it can jump in a more random direction on the screen and impact every part of the sieve surface to effectively prevent clogging.

[Action]
The operation of the tapping member 10 of the vibration sieve of the present invention having the above configuration will be described below.
FIG. 3 is an explanatory view of the tapping member of the vibration sieve arranged on the screen.
FIG. 2A is a side view in which a tapping member 10 of a vibrating screen is installed on a screen 5 in two upper and lower layers. In this case, the partition plate 6 is arranged in a grid shape between the screens 5 in the upper and lower stages. Each room of the partition room surrounded by the screen on the upper and lower surfaces and the partition plate 6 on the side surface accommodates a plurality of vibrating screen tapping members 10. Thereby, the tapping member 10 of the vibration sieve can be evenly arranged with respect to the screen surface. Since the tapping member 10 of the vibrating screen accommodated in the partition chamber is eccentric to the center of gravity of the tapping body 20 and the core body 30 when it collides with the screen 5 and the partition plate of the upper and lower two layers at the time of vibration, random directions Can jump to. Moreover, even on an inclined screen, it is possible to easily jump from a low place to a high place without staying in a low place. The tapping member 10 of such a vibration sieve can prevent clogging by hitting the screen surface evenly by the vibration of the vibrator.

  In FIG. 5B, a rope 8 is extended toward a screen surface at a predetermined interval from a support 7 formed on a frame on the screen. A tapping member 10 of a vibration sieve is attached to the tip of the rope 8. The range in which the tapping member 10 of the vibrating screen is jumped by the rope is limited, but is arranged evenly with respect to the screen surface. Since the tapping member of the vibrating screen connected to the rope makes the center of gravity of the tapping body 20 and the core body 30 eccentric when colliding on the screen during vibration, it can jump in a random direction. Moreover, even on an inclined screen, it is possible to easily jump from a low place to a high place without staying in a low place.

According to such a tapping member of the vibrating screen of the present invention, the center of gravity of the tapping body and the core body is decentered in any case between the upper and lower two screens or on the screen. Therefore, it is possible to effectively prevent clogging by jumping in random directions and uniformly impacting every portion of the sieve surface.
In addition to the repulsive force due to the elastic deformation of the tapping body, the specific gravity of the core is made larger than the specific gravity of the tapping body, so the weight of the entire member increases and a strong collision force is applied to the sieve surface by vibration. And clogging can be effectively prevented.

  The tapping member of the vibration sieve of the present invention is useful in fields such as crushed stone work at a construction site and sorting work at a chemical factory.

1 ... …… Vibrating sieve, 2 ... …… Vibrator, 3 ... …… Screen, 4 ......... Tapping member, 5 ...... Upper and lower two layers of screen, 6 ......... Partition plate, 7 ......... Support 8 ......... Rope 10, 10A, 10B, 10C ......... Tapping member of vibrating sieve, 20, 20A, 20B, 20C ......... Tapping body, 30 ...... Core.

Claims (6)

A tapping body that can be struck against the screen surface when the vibrating screen vibrates;
A core body enclosed in the tapping body and using a metal material;
A tapping member for a vibrating sieve, comprising:   2. The tapping member for a vibrating sieve according to claim 1, wherein the core has a center of gravity disposed at an eccentric position of the center of gravity of the tapping body.   The tapping member for a vibrating sieve according to claim 1 or 2, wherein the core body has a specific gravity greater than that of the tapping body.   4. The tapping member for a vibration sieve according to claim 1, wherein the tapping body uses silicon rubber or plastic resin as a material.   The tapping member for a vibrating sieve according to any one of claims 1 to 4, wherein the tapping body is hollow, and the outer diameter of the core is smaller than the hollow.   The tapping member for a vibrating sieve according to any one of claims 1 to 5, wherein the tapping body has any one of a spherical shape, an elliptical shape, and a polyhedron shape.

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