JP2003334494A - Sieving machine for preventing vertical slip - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a sieving machine for preventing vertical slip capable of separating a foreign matter having the length larger than a mesh. <P>SOLUTION: The machine has a sieving part 10 having a sieving plate 13, a machine base 11 for inclining and supporting the sieving part 10, and a drive means for vibrating the sieving part 10. The front and rear and right and left lower parts of the sieving part 10 have rollers 15 for enabling the vibration in the right angle direction with respect to the inclination direction. The machine base 11 has rails 16 for supporting and guiding the rollers 15 in the sieving part. The sieving part 10 is vibrated in the right angle direction with respect to the inclination direction by the drive means. <P>COPYRIGHT: (C)2004,JPO

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to a vertical drop prevention sieve machine. More specifically, the present invention relates to a vertical falling prevention sieve machine for selecting only slender pulverized products obtained by pulverizing trees and the like having a predetermined length and size.

[0002]

2. Description of the Related Art Most of the conventional sieving machines are used for selecting sand, gravel, etc., and have not been found as a sieve for selecting long and narrow crushed trees. FIG. 5A is a diagram showing an example of a conventional sieving machine. The feature of this sieving machine is that the sieving 3 supported by the spring 2 on the machine base 1 is rotated in the vertical direction by the eccentric weight 4 as shown in FIG.
As described above, the material to be sieved 5 is moved in one direction while being rotated in the longitudinal direction, and the material to be sieved having a mesh size or less is dropped and sorted. In this case, if there is an elongated one among the objects to be sieved rotating in the longitudinal direction, a long object having a mesh size or more falls in the longitudinal direction and it is not possible to sort the objects to be sieved having a certain length or more. It was

Therefore, in order to prevent this vertical drop, FIG.
As shown in (a), by rotating the sieve 3 in a horizontal direction by the eccentric pin 6, it is possible to suppress the jerk of the object to be sieved 5 and to select a contaminant having a length longer than the mesh size. Machine is being developed.

[0004]

However, in this sieving machine, the sieve surface is such that the object 5 to be sieved is placed on the surface of the sieve 3 with a predetermined inclination while rotating as shown in FIGS. 6 (b) and 6 (c). (D) when the material to be sieved 5 continuously supplied to the sieve surface is moved to the lower side of the
As shown in the figure, they partially collide with each other in a part of the rotational movement and partially bulge, so that a piece of wood having a length longer than a long mesh may fall vertically.

[0005] The crushed material of the selected tree is used in combination with a vegetation base material as a part of recycling of the on-site generated material for CO ₂ reduction which has recently been a problem. If even a small amount of wood chips having a predetermined length or longer is mixed, there is a problem that the slurry pump for spraying the vegetation base material, the spray nozzle and the hose are clogged.

In view of the above-mentioned conventional problems, it is an object of the present invention to provide a sieving machine capable of selecting impurities having a length longer than the mesh size.

[0007]

In order to achieve the above-mentioned object, a vertical drop prevention sieve according to claim 1 of the present invention supports a sieve portion 10 having a sieve plate 13, and supports the sieve portion 10 in an inclined manner. A machine base 11 and a drive means for vibrating the screen portion 10 are provided, and the screen portion 10 is provided with rollers 15 at front, rear, left and right lower portions so that the screen portion 10 can vibrate in a direction perpendicular to the inclination direction thereof. The machine base 11 is provided with a rail 16 that supports and guides the roller 15 of the sieve unit, and the drive unit swings the sieve unit 10 in a direction perpendicular to the inclination direction. .

According to a second aspect of the present invention, there is provided a screen section 10 having a screen plate 13, and a machine base 11 for supporting the screen section 10 by inclining it.
A drive means for vibrating the sieve portion 10 is provided, and support rods 24 and 25 having a predetermined length are fixed to the lower surface of the sieve portion 10 in the front and rear of the inclined direction, and the machine base 11 is provided with Supporting portions 26 and 27 for swingably supporting one ends of support rods 24 and 25 fixed to the sieve portion are provided, and the sieve portion 10 is driven by the driving means in a direction perpendicular to the inclination direction. The feature is that it makes a mountain-shaped lateral swing.

According to a third aspect of the present invention, the sieve section 10 is provided with impact plates 34 for giving arbitrary impacts at both ends vibrating in a direction perpendicular to the inclination direction. Further, a fourth aspect of the present invention is characterized in that the sieve plate 13 of the sieve portion 10 is slightly curved on both left and right sides parallel to the inclination direction thereof, and the side plate 14 is gently curved and raised.

By adopting this structure, a vertical falling prevention sieve that enables the selection of impurities having a length longer than the mesh size can be obtained.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is a view showing a first embodiment of a vertical drop prevention sieve of the present invention, (a) is a plan view,
(B) is sectional drawing in the bb line of (a) figure, (c) is sectional drawing in the cc line of (a) figure. As shown in the figure, the present embodiment includes a sieve unit 10, a machine base 11, and a drive unit 12. The sieve unit 10 is a rectangular sieve plate 1
The three sides of No. 3 are surrounded by side plates 14, and rollers 15 are provided on the left and right in the longitudinal direction. The roller 15 is provided so that the screen portion 10 can be vibrated in a direction perpendicular to the longitudinal direction thereof.

The machine base 11 has a frame shape with an inclined upper part, and a rail 16 for guiding the rollers 15 of the sieve section 10 is provided on the upper part so as to extend in a direction perpendicular to the tilt direction of the machine base. ing. The rails are located above and below the inclined surface corresponding to the rollers 15 of the screen 10. Further, the sieve unit 10 is placed on the rail 16 so that the side without the side plate is downwardly inclined. This makes the sieve part 1
0 is a tilted state.

The drive unit 12 comprises a flywheel 17, a drive motor 18 for rotationally driving the flywheel 17, and a connecting rod 20, and the drive motor 18 is fixed to the side surface of the machine base 11. Further, an eccentric pin 19 is planted in the flywheel 17, one end of a connecting rod 20 is rotatably supported by the eccentric pin 19, and the other end 20a of the connecting rod 20 is swingable on the sieve portion 10. It is installed.

The operation of the present embodiment configured as described above will be described below. First, power is supplied to the drive motor 18 to rotationally drive the flywheel 17. Then, the eccentric pin 19 of the flywheel 17 pushes and pulls the sieve portion 10 guided by the rail 16 via the connecting rod 20 to reciprocally vibrate the sieve portion 10 in a direction perpendicular to the tilt direction.

Next, the material to be sieved 21 is supplied from above the vibrating sieve portion 10. Then, the object to be sieved 21 is denoted by reference numeral 22 in the figure due to the left and right vibrations of the sieve unit 10 and the inclination of the sieve plate 13.
As shown by, the robot moves downward while moving horizontally and in a waveform. As a result, the objects to be sieved 21 having a size smaller than the mesh size of the sieve plate 13 fall from the meshes and are separated from those having a size larger than the mesh size. At this time, since the sieve 13 vibrates horizontally in the object 21 to be sieved, one larger than the mesh size does not become vertical and does not vertically fall from the sieve mesh.

2A and 2B are views showing a second embodiment of the vertical falling prevention sieve of the present invention, wherein FIG. 2A is a plan view and FIG. 2B is a sectional view taken along line bb in FIG. , (C) is a Z arrow view of FIG. As shown in the figure, the present embodiment includes a sieve unit 10, a machine base 11, and a drive unit 12.
The sieve unit 10 surrounds the rectangular sieve 13 on three sides with side plates 14, and the lower surface thereof is provided with the support members 2 in the longitudinal direction.
4, 25 are fixed.

The machine base 11 has a frame shape with an inclined upper portion, and support portions 26 and 27 for swingably supporting the support rods 24 and 25 of the sieve portion 10 are provided in front of and behind the frame portion 2.
6, 27 support the sieve unit 10 in an inclined manner. Further, a drive motor 29 having a pulley 28 is arranged at the center of the upper portion of the machine base 11, eccentric pins 30 are provided at the upper left and right sides, and a driven pulley 32 in which a belt 31 is stretched around the pulley 28 is rotatable. It is provided in. One end of the connecting rod 33 is rotatably supported by the eccentric pin 30 of the driven pulley 32, and the other end of the connecting rod 33 is connected to the sieve unit 1.
The support rods 24 and 25 of No. 0 are swingably connected by a pin 34.

The operation of the present embodiment configured as described above will be described below. First, power is supplied to the drive motor 29 to rotationally drive the drive pulley 28, and the driven pulley 32 is rotationally driven via the belt 31. Then, the eccentric pin 30 of the driven pulley 32 pushes and pulls the support rods 24 and 25 through the connecting rod 33 to swing them. As a result, the sieve portion 10 is moved to the support portion 2
6 and 27 are oscillated in a direction perpendicular to the longitudinal direction of the sieve unit 10 and in a mountain shape.

Next, the material to be sieved 21 is supplied from above the vibrating sieve portion 10. As a result, the material to be sieved 21 becomes the sieve portion 10
As shown by the wavy line in the figure due to the left and right vibrations caused by the vibration and the transition of the screen portion 10 due to the inclination, it moves downward while moving in a wavy shape on the screen surface and in a mountain shape in the vertical cross section. As a result, an object to be sieved having a size equal to or smaller than the mesh size of the sieve plate 13 drops from the mesh openings of the sieve plate 13 and is separated from the mesh having a size larger than the mesh size.
At this time, since the sieve plate 13 is vibrating in a mountain shape, the object to be sieved 21 does not have a size larger than the mesh length and does not vertically fall from the mesh size.

FIG. 3 is a plan view showing a third embodiment of the vertical falling prevention sieve of the present invention. The present embodiment is substantially the same as the first and second embodiments, except that when the sieve unit 10 vibrates left and right, the sieve unit 10 gives an arbitrary impact near the end of the vibration. The impact plate 34 is provided so as to face the left and right vibrating portions of the portion 10. In this embodiment, the impact plate 34 uses the spring 35 for absorbing the impact.

In this embodiment having such a configuration, when the sieve portion 10 vibrates, both ends of the sieve portion 10 collide with the impact plates 34 with an arbitrary strength to give an impact to the object to be sieved. This impact removes the sieved material that is clogged to the mesh, and the efficiency of dropping and screening the sieved material below the mesh can be improved. A spring 35 provided to absorb the impact of the impact plate 34 is provided in the middle of the connecting rod 20,
The impact plate 34 may be fixed.

FIG. 4 is a view showing a cross section of a sieve portion in a fourth embodiment of the vertical drop prevention sieve machine of the present invention. As shown in the figure, the present embodiment is a modification of the sieve unit 10 in the first to third embodiments. That is, as shown in the figure, both side portions parallel to the longitudinal direction of the sieve plate 13 are curved upward, and the side plates 14 contacting both side portions are also curved and raised.

In this embodiment having the above-mentioned structure, the material to be sieved 21 put into the sieve portion 10 is not biased to the corners, and the side plate 1 is
The collision with 4 is also prevented. As a result, the object to be sieved is the side plate 1.
It is possible to prevent an object to be sieved which collides with the sheet No. 4 and rises and which is longer than the mesh of the sieve plate 13 from falling vertically.

[Embodiment 1] As Embodiment 1, the following configuration is adopted according to the first embodiment. The screen portion 10 has a width of 90 cm,
The length was 180 cm and the depth was 10 cm, and the angle of inclination of the sieve portion 10 was set to 15 °. The sieve plate 13 was a punching mesh, and the holes having a diameter of 20 mm were 40 mm at the core, and the sieve plate 13 was formed in a zigzag pattern over the entire area of about 3/4 (135 cm) below the inclined sieve surface. Further, an iron plate having a corrugated surface was installed on the upper 1/4 (45 cm) surface in order to quickly and evenly smooth the sieved object continuously supplied by a belt conveyor or the like and accumulated in a mountain shape. Also,
The diameter of the flywheel 17 for swinging the sieve sideways is 10 cm,
An eccentric pin 19 was installed at a position 3 cm from the center, and the lateral deflection width was 6 cm.

A test was carried out by comparing the present embodiment thus constructed with the conventional example. For the test, 100 l of trees crushed to a size of 75 mm by a crusher were prepared, and the same amount was used for 3
Screening was repeated repeatedly, and the vertical drop amount of the wood pieces having a mesh length of 20 mm or more was confirmed. As shown in Table 1, the test results showed that the vertical drop amount was 0 in this example, and the effect was able to be verified.

[0026]

[Table 1]

[Embodiment 2] As Embodiment 2, according to the second embodiment, the sieve unit 10 is configured to vibrate in a mountain shape, and other configurations are the same as those of Embodiment 1, and the test method is also the same. And the sorting amount per unit time was measured. As the test results are shown in Table 2, the selection amount per unit time was improved as compared with Example 1.

[0028]

[Table 2]

[0029]

EFFECTS OF THE INVENTION According to the vertical drop prevention sieve of the present invention, by causing the sieve plate to horizontally shake or mountain-like shake, foreign matters longer than the mesh length do not become vertical, and therefore It is possible to prevent such long contaminants from falling vertically from the sieve mesh.

[Brief description of drawings]

1A and 1B are views showing a first embodiment of a vertical falling prevention sieve of the present invention, in which FIG. 1A is a plan view and FIG.
Sectional drawing in the line, (c) is sectional drawing in the cc line of (a) figure.

2A and 2B are views showing a second embodiment of a vertical falling prevention sieve of the present invention, in which FIG. 2A is a plan view and FIG.
Sectional drawing in the line, (c) is a Z arrow view of (b) figure.

FIG. 3 is a plan view showing a third embodiment of a vertical drop prevention sieve of the present invention.

FIG. 4 is a view showing a cross section of a sieve portion in a fourth embodiment of a vertical drop prevention sieve machine of the present invention.

FIG. 5 is a diagram showing an example of a conventional sieving machine.

FIG. 6 is a diagram showing another example of a conventional sieving machine.

[Explanation of symbols]

10 ... sieve part 11 ... Machine stand 12 ... Drive unit 13 ... Sieve plate 14 ... Side plate 15 ... Laura 16 ... Rail 17 ... flywheel 18, 29 ... Drive motor 19, 30 ... Eccentric pin 20, 33 ... Connecting rod 21 ... Object to be screened 24, 25 ... Support rod 26, 27 ... Supporting part 28 ... pulley 31 ... Belt 34 ... Impact plate 35 ... Spring

Claims (4)

[Claims] 1. A sieve section (10) having a sieve plate (13),
A machine base (11) for supporting the sieve part (10) by inclining,
A driving means for vibrating the sieve portion (10), and the sieve portion (10) is provided with rollers (15) at lower portions in front, rear, left and right directions so that the sieve portion (10) can vibrate in a direction perpendicular to an inclination direction thereof. The machine base (11) is provided with rails (16) that support and guide the rollers (15) of the sieve unit, and the drive unit drives the sieve unit (10) in a direction perpendicular to the inclination direction. A vertical falling prevention sieve machine that is shaken horizontally. 2. A sieve section (10) having a sieve plate (13),
A machine base (11) for supporting the sieve part (10) by inclining,
A drive means for vibrating the sieve portion (10), and fixing support rods (24, 25) of a predetermined length on the lower surface of the sieve portion (10) in the front and rear of the inclined direction, The machine base (11) is provided with support portions (26, 27) for swingably supporting one end of each of support rods (24, 25) fixed to the sieve portion, and the drive means drives the sieve A vertical falling prevention sieve machine characterized by causing the portion (10) to laterally swing in a mountain shape in a direction perpendicular to the inclination direction. 3. The impact plate (34) for applying an arbitrary impact to both ends of the sieve portion (10) vibrating in a direction perpendicular to the inclination direction of the sieve portion (10).
Or the vertical drop prevention sieve machine described in 2. 4. The screen plate (13) of the screen section (10) is formed by slightly bending up the left and right sides parallel to the inclination direction, and further raising the side plate (14) by gently bending it. The vertical falling prevention sifter according to claim 1 or 2.