JP2002045794A - Sieve net - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a sieve net reduced in clogging and the abrasion caused by clogging and improving fractionation efficiency. SOLUTION: In the sieve net 10 wherein a plurality of parallelly arranged warp lines 12 comprising a synthetic resin wire material are welded to a large number of parallelly arranged weft lines under heating so as to cross the weft lines, a large number of the weft lines arranged side by side include a plurality of tensioned lines 15, each of which is formed by providing a reinforcing core material 14 in the synthetic resin wire material, and coreless vibration lines 16 comprising the synthetic wire material are provided between the adjacent tensioned lines 15.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sieve mesh mounted on a vibrating sieve.

[0002]

2. Description of the Related Art A sieve mesh used in a vibrating screen is stretched on both sides of the vibrating screen. Many sieve nets are made of metal and synthetic resin, but a sieve net made of a synthetic resin wire has a wear resistance of 5 to 10 times that of metal. The use of sieve nets made of synthetic resin wires is increasing. Conventionally, when a sieve mesh made of a synthetic resin wire is used, in order to increase the tensile strength of the synthetic resin wire, it is provided in a direction (weft direction) orthogonal to the flow direction (warp direction) of the raw material. All wefts were provided with a reinforcing core made of wire or round steel. By providing the reinforcing core material on the weft, the tensile strength of the weft could be increased, and flutter of the sieve mesh during operation of the vibrating screen could be suppressed.

[0003]

However, in the above-mentioned conventional sieve mesh, the reinforcing core is provided on all the wefts, so that the hardness of the wefts is increased and it is difficult for the wefts to vibrate. Raw materials were caught between them, causing so-called clogging. Since the raw material once sandwiched is fixed by the wefts whose hardness is increased by the reinforcing core material, it takes time to remove the clogging. In addition, there is also a problem that the clogging increases the abrasion of the sieve mesh surface and shortens the service life of the sieve mesh. On the other hand, although the warp of the sieve mesh had sufficient flexibility, the lower portion was welded to the weft, so that it was integrated with the weft, and the vibration by the vibrating screen was suppressed. The present invention has been made in view of such circumstances, and an object of the present invention is to provide a sieve net that reduces clogging and abrasion due to clogging and improves sorting efficiency.

[0004]

According to the present invention, there is provided a sieve net according to the present invention, comprising a plurality of parallelly arranged synthetic resin wires intersecting a plurality of parallelly arranged wefts. In a sieve mesh obtained by heating and welding a plurality of warps, a large number of the wefts arranged side by side have a plurality of stretched wires provided with a reinforcing core inside a synthetic resin wire, and the adjacent stretches have a plurality of stretched wires. A vibration line made of a coreless synthetic resin wire is provided between the provided lines. Here, the synthetic resin wire includes, for example, polyurethane rubber, synthetic rubber, and the like, which are blended with natural rubber, having excellent wear resistance. The reinforcing core material is made of a material having excellent tensile strength, such as a wire steel wire, cotton yarn, synthetic fiber such as nylon or polyester fiber, glass fiber, and carbon fiber. Since the weft has a coreless vibrating wire, the amplitude can be larger than that of the stretched wire, preventing clogging and reducing the abrasion of the sieve mesh to improve the sorting efficiency. it can. In addition,
Since it is heat-welded to the vibrating line, it can vibrate greatly together with the vibrating line. Further, since the warp is also heated and welded to the stretched wire, it is possible to prevent the amplitude of the sieve mesh from becoming too large and generating flutter.

Further, since the vibrating wire is provided between the adjacent stretched wires, even when clogging occurs, the raw material is not fixed by being sandwiched between the two stretched wires. , Can be easily removed. In addition, it is possible to provide one or more vibration lines between adjacent stretch lines. Here, it is also possible to provide one vibrating line between the adjacent extending lines. Since the vibrating filament is provided one by one between the stretched filaments, the raw material always falls from the sieve between the stretched filament and the vibrating filament, and the size of the sieve is It is possible to stably separate the raw materials while keeping the change constant. It is also possible to make the weft and the warp substantially circular in cross section, and to provide the reinforcing core material substantially at the center or at a position below the center of the stretched wire. When the reinforcing core is provided below the center of the stretched line, it is preferable to display a marker line parallel to the centerline on the upper surface immediately above the centerline of the stretched line. When the reinforcing core is provided at the center of the stretched wire, the stretched wire can be attached without performing alignment of the reinforcing core. With such a configuration, the production of the sieve mesh can be performed simply and reliably. Further, it is also possible that the weft and the warp are formed in a vertically long shape in which the upper and lower parts are deformed, and the reinforcing core material is provided below the center of the stretched wire. Here, the vertically long shape in which the upper and lower portions have irregular shapes corresponds to, for example, a shape in which the upper corner of a rectangle having a height higher than the width is rounded or a bell shape. In addition, those in which a protrusion is attached to the upper or lower part of a vertically long ellipse are also included.
In these cases, the shape of the upper part is preferably formed in a curved shape in order to make the raw material to be separated slippery.
With such a configuration, it is possible to form a sieve mesh with the heights of the wefts and warps increased, and it is possible to reliably guide the raw material in the flow direction, and to reduce the time until the reinforcing core material is exposed. And the life of the screen can be prolonged.

[0006] Further, the weft is substantially circular in cross section,
The reinforcing core material is provided substantially at the center or below the center of the stretched wire in the stretched wire of the weft, and the warp is formed in a vertically elongated shape in which the upper and lower portions are deformed. It is also possible to form. With such a configuration, the pitch of the weft and the warp can be adjusted to prevent breakage due to abrasion of the sieve mesh, and the dimensions of the mesh in the weft and the warp directions can be changed, and the sieve can be efficiently sieved. Dividing can be done. Further, the weft is formed in a vertically elongated shape in which an upper part and a lower part are irregularly shaped, and the reinforcing core material is provided at a position below the center of the stretched wire in the stretched wire of the weft. It is also possible to form the strip in a substantially circular cross section. With such a configuration, the pitch of the weft and the warp can be adjusted to prevent breakage due to abrasion of the sieve mesh. Then, the stretched wire of the weft is formed in a vertically elongated shape in which an upper portion and a lower portion are deformed, and the reinforcing core material is provided below the stretched wire,
It is also possible to form the vibrating line and the warp of the weft into a substantially circular cross section. With such a configuration,
This makes it possible to make the stretched wire containing the reinforcing core hard to be damaged, prolong the life of the sieve mesh, and easily manufacture other wires.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, embodiments of the present invention will be described with reference to the accompanying drawings to provide an understanding of the present invention. 1 (A), 1 (B), 2 (A)
1 to (C) show a sieve mesh 10 according to an embodiment of the present invention. The sieve mesh 10 includes a plurality of stretched filaments 15 and vibration filaments 16 arranged orthogonally to the flow direction of the raw material;
And a striation 12 intersecting with the vibration filament 16 and a tension filament 15
Frame 1 provided at both ends of vibration line 16
Three. The vibrating wire 16 and the warp 12 are made of a coreless synthetic resin wire, and the stretched wire 15 has a wire steel wire 14 as an example of a reinforcing core inside the synthetic resin wire. The upper part of the tensioning line 15 and the vibrating line 16 constituting a plurality of parallelly arranged wefts, and the lower part of a plurality of parallelly arranged warps 12 crossing the wefts are heat-welded. I have. The details will be described below. First, the thread 12 will be described. The warp 12 is, for example, 1 to 50 mm in diameter.
Are provided at a pitch of 2 to 50 mm in parallel with the flow direction of the raw material of the vibrating sieve (not shown).

Next, the weft will be described. The parallel wefts are a plurality of circular cross-shaped stretched wires 15 each having a wire steel wire 14 therein, and a circular cross-sectional shape provided between adjacent stretched wires 15 one by one. Coreless vibration line 16
have. The diameter of the stretched wire 15 and the vibration wire 16 is
The pitch of the weft is, for example, substantially the same as that of the warp 12, or 1.5 to 5 times the pitch of the warp 12, for example. Installed at a pitch of The wire steel wire 14 provided inside the tension wire 15 is provided at the center position of the tension wire 15, but may be provided at a position lower than the center. When the wire steel wire 14 is provided at the center position of the tension wire 15,
Since the position of the wire steel wire 14 does not change even if the stretched wire 15 is twisted, there is no need to adjust the upper and lower positions of the stretched wire 15 when manufacturing the sieve mesh 10, and manufacturing can be performed easily. it can. When the position of the wire steel wire 14 is eccentrically provided below the center of the stretched wire 15,
It takes a long time until the wire steel wire 14 is exposed when the upper portion of the stretched wire 15 is worn, so that the life of the sieve mesh 10 can be extended.

Next, with reference to FIG. 3A, a connection state between the weft and the fixed frame 13 will be described. The fixed frame 13 has a horizontal plate portion 17 made of metal and a hook portion 18 bent upward and inward from an outer end of the horizontal plate portion 17, and around the horizontal plate portion 17, the same as the warp 12. A fixed resin layer 19 made of a material is provided. The ends of the stretched wires 15 are integrally fixed to the fixed resin layer 19 while being connected to the ends of the adjacent stretched wires 15. That is, the stretched wire 15 is formed of one synthetic resin wire 24 having the wire steel wire 14 therein. In addition, the vibration line 16
Are integrally fixed to the fixed resin layer 19, respectively. When connecting the weft and the fixed frame 13,
The bent portion of the stretched wire 15 and the end of the vibration wire 16 are arranged at the lower position (or upper position) of the horizontal plate portion 17 at the same level, and the fixed resin layer 19 is formed. The molding is performed by the above procedure, and the stretched filament 15 and the vibrating filament 16
Are integrated with the fixed resin layer 19, respectively. In this manner, the weft and the fixed frame 13 can be connected. With this configuration, the tensile strength of the stretched wire 15 can be increased, and a cutting step for forming the stretched wire 15 can be omitted to shorten the manufacturing time.

Next, referring to FIG. 1, FIG. 2 and FIG.
The use state of 0 will be described. The vibrating sieve 39 has a horizontally long rectangular parallelepiped outer shape whose upper and downstream ends are open,
Rotating shaft 44 with eccentric weight penetrating the center of both side walls 45
Is provided. The rotation shaft 40 is connected to a drive motor 40 with a speed reducer. The mounting bracket 4 is attached to the front and rear outer portions of both side wall portions 45 via the damping spring 41.
2 are provided, and the vibration sieving machine 39 is attached to a base (not shown) via a mounting bracket 42 with its downstream side lowered. Inside the both side walls 45 of the vibrating sieve 39, U-shaped mounting brackets 43 that are opened outward are provided in two upper and lower stages, and the mounting bracket 43 is provided with the fixed frame 13 of each sieve net 10. Each can be hung. With this configuration, the sieve net 10 is attached to the vibrating sieve 39 in two stages, upper and lower. At the lower part of the sieve mesh 10, a plurality of tension bars (not shown) that are in contact with the sieve mesh 10 via a buffer material (not shown) are provided in parallel with the flow direction of the raw material. A pressing plate 47 is provided along the direction to press the sieve mesh 10 from above to suppress flutter. When the bolts and nuts attached to the mounting bracket 43 are fastened and the fixing frame 13 of the sieve mesh 10 is pulled to both sides, the wire steel wire 14 inside the tension wire 15 is pulled, and the sieve mesh 10 is firmly fixed. Can be stretched. When the drive motor 40 and the rotating shaft 44 of the vibrating screen 39 rotate, the screen 10 vibrates up and down. The fixed frame 13 moves up and down with substantially the same amplitude as the amplitude given from the vibrating screen 39, and the stretched wire 15 containing the wire steel wire 14 vibrates with a slightly larger amplitude than the fixed frame 13. The vibrating line 16 provided between the adjacent extending lines 15 and the transverse line 12 substantially perpendicular to the extending lines 15 are the extending lines 1.
It is possible to vibrate with an amplitude greater than 5.
With such a configuration, the raw material put on the sieve net 10 can be vibrated efficiently and sieved. In addition, all the intersections of the weft and sutra 12 are welded,
It is possible to partially omit this, and by omitting welding, the amplitude can be further increased and clogging can be easily removed. In addition,
The sieve net 10 is a vibrating sieve other than the vibrating sieve 39, for example, 1
It can be used for a stage type or a three stage type, and it is of course possible to use it for a backward type using electromagnetic vibration and a resonance type vibrating sieve using secondary vibration.

Next, a sieve mesh 25 according to a modification will be described with reference to FIG. Each end of the plurality of stretched wires 22 is a wire steel wire 2 which is an example of a reinforcing core material.
The urethane resin is removed while leaving the end of No. 3. Then, the ends of the stretched wire 22 and the vibrating wire 20 are respectively arranged at the lower position (or upper position) of the fixed frame 21 on both sides, and are integrally formed with the fixed resin layer 26. Thus, the weft and the fixed frame 21 can be fixed.

Note that other connection methods can be applied to the connection between the weft and the fixed frame 13. For example, a fixing plate (not shown) corresponding to the horizontal plate portion 17 is prepared, the end of the weft is sandwiched between the horizontal plate portion 17 and the fixing plate, and this is fixed using fastening means such as bolts. Is also possible. Next, sieve nets 27 to 29 according to other modified examples will be described with reference to FIGS. The sieve nets 27 to 29 are obtained by changing the cross-sectional shape of the synthetic resin wire used for the sieve net 10 according to the embodiment. Here, the same members used in the respective modified examples are denoted by the same reference numerals, and description thereof will be omitted.

First, a synthetic resin wire rod used for wefts and warps in the sieve screens 27 to 29 will be described. This synthetic resin wire has a vertically elongated shape in which the upper and lower portions are irregular, that is, a rectangular cross section having a semicircular portion at the upper portion and a horizontal width equal to the diameter of the semicircular portion at the lower portion. The diameter of the semicircular portion is formed substantially equal to the width of the synthetic resin wire. The height of the synthetic resin wire is substantially 1.2 to 2 times the width of the synthetic resin wire. For example, the width of the synthetic resin wire is 3 to 12 mm, and the height is 3.6 to 24.
mm. Note that a wire steel wire, which is an example of a reinforcing core material, can be built in a lower portion (a position lower than the center) of the synthetic resin wire.

As shown in FIGS. 4A to 4C, the sieve mesh 2
Reference numeral 7 is used by cutting the synthetic resin wire having the irregular cross-section into the weft and the warp 34 into a predetermined length. A large number of wefts are composed of a plurality of stretched lines 35 and vibration lines 36 which are alternately arranged one by one. The stretch line 35
A wire steel wire 30 is provided inside the synthetic resin wire having the irregular cross section (position below the center). The upper part of the weft and the lower part of the warp 34 abut against each other and are heated and welded. The upper part of the weft is formed in a semicircular shape, and the lower part of the warp 34 is formed in a straight line. Therefore, when the height of the welded portion is constant, the welding width is larger than when welding arcs. Can be formed large. With this configuration, the welding strength between the weft and the warp 34 can be increased, and the strength of the sieve mesh 27 can be increased. In addition, since the height of the weft and the warp 34 is increased, even if it is worn and scraped from the upper portion, the time until breaking can be extended, so that the life of the sieve mesh 27 can be extended. .

Next, the screen 28 will be described with reference to FIGS. The configuration of the wefts of the sieve net 28 is substantially the same as the wefts according to the modified example described with reference to FIG. Further, as the thread 38, a synthetic resin wire having the same circular cross section as the thread 12 according to the embodiment is used. With such a configuration, the life of the weft against abrasion can be made longer than the warp 38. Conversely, by using a weft having a circular cross section and using a warp having a modified cross section, the life of the warp against wear can be made longer than the life of the weft. As described above, the strength of the warp and the weft can be adjusted depending on the use conditions of the raw material and the like to be separated.

Next, the screen mesh 29 will be described with reference to FIGS. The sieve net 29 uses a vertically elongated synthetic resin wire having a deformed upper and lower portion for a stretched wire 50 having a wire steel wire 49 as an example of a reinforcing core material at a lower portion, and a vibration wire 51 and a warp. Reference numeral 52 denotes a synthetic resin wire having a circular cross section. With this configuration, the tensioning wire 50 to which tension is applied at the time of mounting is reinforced, and the tensioning wire 5
0 can be prevented, and the life of the sieve mesh 29 can be prolonged. As mentioned above, although the embodiment according to the present invention has been described, the present invention is not limited to the embodiment, for example, a deformed synthetic resin wire can be used at any position, By using the raw material inlet, it is possible to prevent the raw material to be selected from being broken due to the impact of falling, and to use the sieve net for a long time with less maintenance.

[0017]

In the sieve net according to any one of the first to seventh aspects, since the coreless vibrating line is provided on the weft, the amplitude can be made larger than that of the stretched line to prevent clogging. In addition, the efficiency of sorting can be improved by reducing abrasion of the sieve mesh. In addition, since the vibrating wire is provided between adjacent stretched wires, even when clogging occurs, the raw material is not sandwiched and fixed between the two stretched wires, and can be easily formed. Can be removed. In particular, in the sieve net according to claim 2, since the vibrating filaments are provided one by one between the stretched filaments,
The raw material always falls from the sieve between the stretched filament and the vibrating filament, and the raw material can be separated stably with a constant change in the size of the sieve.

According to the third aspect of the present invention, since the weft and the warp are formed to have a circular cross section, the sieve mesh can be easily manufactured. In the sieve mesh according to claim 4, since the cross section of the weft and the warp is formed in a vertically long shape in which the upper and lower portions are irregular, a vertically long sieve mesh can be formed,
Guidance in the flow direction of the raw material can be reliably performed. In addition, the time required for exposing the reinforcing core material can be lengthened to extend the life of the sieve mesh, and the width of the weft and warp can be reduced, and the opening area can be increased to increase the sieving efficiency. Can be better. In the sieve mesh according to the fifth aspect, since the cross section of the weft is circular and the warp is formed in a vertically long shape with irregular top and bottom, the pitch of the weft and warp is adjusted to cause breakage due to abrasion of the screen. Can be prevented. In the sieve mesh according to claim 6, since the wefts are vertically elongated with irregular shapes and the cross-section of the warp is circular, the pitch of the wefts and the warp is adjusted, and the sieve mesh is broken due to abrasion of the screen. Can be prevented. And in the sieve net according to claim 7, since the cross section of the stretched wire is formed in a vertically elongated shape in which the upper and lower portions are irregular, the reinforcing core material of the stretched wire is hardly exposed, The life of the screen can be prolonged, and other wires can be easily manufactured.

[Brief description of the drawings]

FIGS. 1A and 1B are a plan view and a front view, respectively, of a sieve net according to an embodiment of the present invention.

FIGS. 2A to 2C are a partially enlarged side view, a partially enlarged plan view, and a partially enlarged front view of the sieve mesh, respectively.

FIGS. 3A and 3B are a partially enlarged perspective view showing a connection portion of the same screen with a fixed frame, and an explanatory view showing a connection state of the screen with a fixed frame according to a modified example. is there.

FIGS. 4A to 4C are a partially enlarged side view, a partially enlarged plan view, and a partially enlarged front view of a sieve net according to another modification, respectively.

FIGS. 5A to 5C are a partially enlarged side view, a partially enlarged plan view, and a partially enlarged front view of a sieve mesh according to another modification, respectively.

FIGS. 6A to 6C are a partially enlarged side view, a partially enlarged plan view, and a partially enlarged front view of a sieve mesh according to another modified example, respectively.

FIG. 7 is a plan view of a vibrating sieve to which the sieve net according to one embodiment of the present invention is applied.

[Explanation of symbols]

10: sieve mesh, 12: thread, 13: fixed frame, 14:
Wire steel wire (reinforcing core material), 15: stretched wire, 16: vibration wire, 17: horizontal plate, 18: hook, 19: fixed resin layer, 20: vibration wire, 21: fixed Frame, 22: stretched wire, 23: wire steel wire (reinforcing core material), 24: synthetic resin wire, 25: sieve mesh, 26: fixed resin layer, 27-2
9: sieve mesh, 30: wire steel wire (reinforcing core material), 34: warp, 35: stretched wire, 36: vibrating wire, 38: warp, 3
9: vibrating sieve, 40: drive motor, 41: damping spring, 4
2: mounting bracket, 43: mounting bracket, 44: rotating shaft, 45: side wall, 47: holding plate, 49: wire steel wire (reinforcing core material), 50: stretched wire, 51: vibration wire, 5
2: Article

Claims (7)

[Claims] 1. A sieve network in which a plurality of parallelly arranged synthetic resin wires intersecting with a plurality of parallelly arranged wefts are heated and welded to a plurality of parallelly arranged wefts. Has a plurality of stretched wires provided with a reinforcing core inside a synthetic resin wire, and a vibration made of a coreless synthetic resin wire is provided between adjacent stretched wires. A sieve mesh characterized by being provided with filaments. 2. The sieve mesh according to claim 1, wherein the vibrating filaments are provided one by one between the adjacent stretched filaments. 3. The sieve net according to claim 1, wherein the weft and the warp are substantially circular in cross section, and the reinforcing core is substantially at the center or the center of the stretched wire. A sieve mesh provided at a lower position. 4. The sieve net according to claim 1, wherein the weft and the warp are formed in a vertically long shape in which an upper part and a lower part are deformed, and the reinforcing core is formed of the stretched wire. A sieve mesh provided below the center. 5. The sieve net according to claim 1, wherein the weft is substantially circular in cross section, and the reinforcing core is attached to the stretched wire of the weft. The screen is characterized by being provided substantially at the center or below the center, and the ribs are formed in a vertically long shape in which upper and lower parts are irregularly shaped. 6. The sieve net according to claim 1, wherein the weft is formed in a vertically long shape in which an upper part and a lower part are deformed, and the reinforcing core is attached to the stretched wire of the weft. A sieve net, wherein a material is provided at a position below the center of the stretched wire, and the thread has a substantially circular cross section. 7. The sieve net according to claim 1, wherein the stretched wire of the weft is formed in a vertically long shape in which an upper portion and a lower portion are deformed, and the reinforcing core material is formed of the stretched wire. A sieve mesh provided at a lower portion of the strip, wherein the vibrating line and the warp of the weft are formed in a substantially circular cross section.