JPH10249281A - Apparatus for preventing clogging of bed soil shifter - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide apparatus for a preventing clogging of a bed soil shifter which does not get clogged even with crude soil containing a high ratio of moisture. SOLUTION: This apparatus for preventing clogging has a crossarm fitting shaft 32 which is pivotally supported, in parallel with the axial center of a rotary sieve 1, outside the upper half part, on one side, of the rotary sieve 1, and a vibrating roller assembly 33 arranged forward and a plurality of vibrating roller assemblies 34 behind the former, side by side, at an appropriate interval, in the rotating direction of the rotary sieve 1, with the base parts of crossarm plates 35 anchored. In addition, the rollers 36 supported pivotally on the upper end part of the sieve machine are set into contact elastically with the surface of the rotating sieve 1. Further, a crank shaft 50 is fixed in the center of a chain gear 4 to be engaged with a roller chain 10 which is fitted around the outer periphery of the front end part of the rotating sieve 1 in such a manner that the crank shaft 50 protrudes backward. Besides, a rolling wheel 51 is provided at the rear end of the crank shaft 50. Following the rotation of the rotating sieve 1, the upper face of the rolling wheel 51 comes into contact with the lower face of a crossarm plate uplifting piece 38 mounted, in a forward protruding fashion, from the upper face of the center part of the vibrating roller assembly 33, and then is parted. In turn, the rollers 36 on the upper end parts of the vibrating roller assemblies 33, 34 are moved vertically around the crossarm fitting shaft 32, and thereby, the surface of the rotating sieve 1 is buffeted, during the downward movement of the rollers 36, to shake off dirt trapped in sieve openings.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for preventing clogging of a floor soil sieving machine for sieving floor soil for raising seedlings with a rotary sieve.

[0002]

2. Description of the Related Art As a device for preventing clogging of a floor sieving machine, for example, as shown in a rear perspective view of a main part in FIG. A sieve 53 is known in which a wire brush 54 is slid substantially horizontally on the upper half portion of the inner surface of the sieve 53. The rotary sieve 53 is formed by forming a thin steel plate having a large number of round holes into a cylinder, and obtaining the floor below the sieve that has passed through the round holes as floor soil. The wire brush 54 drops the soil in the round hole while slidingly contacting the inner peripheral surface of the rotary sieve 53 rotating in the direction of the arrow in the figure, thereby preventing the sieve from being clogged.

Reference numeral 56 denotes a wire brush support which has a rear end fixed to a vertical girder 55 erected at one end of a horizontal girder 59 horizontally hung on the rear part of the frame 52, and has a front end extended forward. The front end of the wire brush 54 is supported.
Numeral 57 is a front opening for charging the original soil (covered soil), and numeral 58 is a rear opening for discharging on the sieve. 6
Reference numerals 0 and 60 denote bearings erected on the cross beams 59. The upper ends of the bearings support the rollers 61, respectively, and the front surfaces of the rollers 61 and 61 are rotatably abutted against the rear surface of the rear opening 58. The backward movement of the sieve 53 is stopped. Reference numeral 62 denotes a sieve upper drop plate, which is attached obliquely downward from the horizontal beam 59, with the upper end thereof being close to the lower peripheral edge of the rear opening 58.

[0004]

The bed soil for raising seedlings generally has a soil moisture content of about 20 to 25%. The wire brush 54 described above can prevent clogging of the rotary sieve 53 in the case of the above-mentioned water content, but when the water content is high, soil adheres to places other than where the wire brush 54 is in sliding contact to prevent clogging. There was a problem that can not be. Further, the sliding contact between the wire brush 54 and the inner peripheral surface of the rotary sieve has a disadvantage that the power required for rotating the rotary sieve is increased by friction.

An object of the present invention is to provide an apparatus for preventing clogging of a floor soil sieving machine which can solve the above-mentioned problems and disadvantages of the prior art.

[0006]

In order to achieve the above object, the present invention provides a clogging prevention device as follows.

The floor soil sifter according to the present invention is opened in the front and rear ends, supported diagonally downward from front to back in the frame, and is rotated by a driving chain gear meshing with a roller chain provided around the outer periphery of the front end. With a rotating sieve. The present invention is directed to a plurality of vibrating rollers provided on one side upper half of the rotary sieve from anterior to posterior at appropriate intervals in the rotational direction of the rotary sieve, and using the rotation of the rotary sieve as a driving force to strike the surface of the rotary sieve. It has a body.

A plurality of arms are provided from the front to the rear on an arm plate mounting shaft rotatably provided on the frame with the vibrating roller body opposed to the upper half of the rotary sieve in parallel with the rotary sieve in parallel with the rotary sieve. The base is fixed to the base with an appropriate distance between the bases.The base is fixed along the direction of rotation of the rotary sieve, and the upper side is attached to the upper end of each arm plate. It is something that has been abutted.

To make the surface of the rotary sieve hit by a plurality of vibrating rollers, a chain meshed with the upper half of the roller chain provided around the front end of the rotary sieve on the side where the vibrating roller body is provided. Fix the front end at the center of the gear,
A wheel is attached to the rear end of the crankshaft that projects rearward toward the center of the foremost arm plate in parallel with the rotation center line of the rotary sieve, and the arm plate ascending piece moves forward from the middle of the foremost arm plate. The upper surface of the wheel is brought into contact with and separated from the lower surface of the arm plate raising piece with the rotation of the rotary sieve, and the rollers at the upper end of each of the vibrating roller bodies are raised and lowered with respect to the rotary sieve surface. And the surface of the rotating sieve is knocked when descending.

The foremost arm plate protrudes from an intermediate portion to the outside of the arm plate mounting shaft, and the frame portion above the spring arm and an outer end of the spring arm. And a lower surface of the roller at the upper end of each vibrating roller body is elastically brought into contact with the surface of the rotary sieve.

[0011]

DESCRIPTION OF THE PREFERRED EMBODIMENTS In the floor sieving machine embodying the present invention, a rotary sieve provided in a frame is rotated by a driving chain gear meshing with a roller chain provided around the outer periphery of a front end. In the present invention, the arm plate mounting shaft is opposed to the frame in parallel with the rotary sieve, and is rotatably provided on the upper half on one side of the rotary sieve. Then, a plurality of arm plates are fixed to the arm plate mounting shaft from the front to the rear at an appropriate distance from each other at an appropriate interval, and the arm plates are arranged along the rotation direction of the rotary sieve, and the rollers are rotated to the upper end of each arm plate. It can be freely mounted to make a vibrating roller body.

A spring arm is protruded from an intermediate portion of the foremost arm plate to the outside of the arm plate attachment shaft, and an outer end of the spring arm and the frame portion above the outer end are provided. A coil spring is stretched between them. Then, the arm plate mounting shaft is rotated by the tension of the coil spring,
The lower peripheral surface of the roller at the upper end of each arm plate is elastically brought into contact with the surface of the rotary sieve. A chain gear is meshed with a roller chain around the front end of the rotary sieve on the side where the vibrating roller body is provided, and a crankshaft having a front end fixed to the center of the chain gear is arranged in parallel with the rotation center line of the rotary sieve. The rear arm protrudes rearward toward the center of the front arm plate, and a wheel is attached to the rear end.

[0013] Further, an arm plate ascending piece protrudes forward from an arm plate intermediate portion of the foremost vibrating roller body, and the rolling wheel is provided on a lower surface of the arm plate ascending piece with the rotation of the rotary sieve. By contacting and separating, the roller at the upper end of each of the vibrating roller bodies is raised and lowered with respect to the surface of the rotary sieve, and when the roller is lowered, the roller receives the elastic force of the coil spring and strongly strikes the surface of the rotary sieve, and Vibration is applied to prevent clogging of the sieve.

[0014]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 5 shows an example of a floor sieving machine equipped with the clogging prevention device of the present invention. Reference numeral 1 denotes a rotary sieve, which is a thin steel plate having a large number of round holes 1a and having an outer diameter of about 580 mm and a length of about 8 mm.
It is formed in a cylinder of 90 mm, is inclined slightly downward from the front to the rear, and is rotatably supported by the inner central portion of the frame 2. The frame 2 is a framework in which four columns 2a, 2b, 2c, and 2d are erected at respective apexes of a quadrangle in a plan view on a substrate 2e provided side by side. The rotary sieve 1 has a front opening 3 and a rear opening 4,
The front opening 3 is formed in a circular shape with the outer periphery of the groove facing outward,
The rear opening 4 is formed by fixing a flat steel plate wound in a circular shape to the outer periphery of the rear end portion. In the round hole 1a, the first half of the rotary sieve 1 has a diameter of 12 mm, and the second half has a diameter of 10 mm.

Reference numeral 5 denotes a roller.
a, 2b, projecting from both sides below the front part of the rotary sieve 1 and rotatably fitted in the concave groove of the front opening 3. Reference numeral 6 denotes a roller, which protrudes from the rear supports 2c and 2d on both lower sides of the rear portion of the rotary sieve 1 and rotatably supports the outer peripheries of the rear ends on both sides of the rear opening 4. Numeral 7 denotes a cross beam, which is horizontally fixed across the rear of the central portion of the rear opening 4 and fixed between the rear columns 2c and 2d, as in FIG.
Bearings 8 are erected on the cross beams 7 so as to face the left and right rear end surfaces of the rear opening 4, and a roller 9 supported on the upper end of the bearing 8 is rotatably mounted on the rear end surface of the rear opening 4. Abutting.

That is, in the rotary sieve 1, the outer peripheries of the front opening 3 and the rear opening 4 are rotatably supported by left and right rollers 5, 5, and rollers 6, 6, respectively. The left and right end surfaces of the portion 4 are rotatably abutted, and do not move rearward. Although not shown, a roller is rotatably abutted on the outer periphery of the upper half portion of the front opening 3 so that the rotary sieve 1 does not rise.

Reference numeral 10 denotes a roller chain, which is fixedly provided on the outer periphery of the rotary sieve 1 immediately after the front opening 3. Reference numeral 11 denotes a base plate for providing a rotating mechanism of the rotary sieve 1. At a position lower than the lower base of the rotary sieve 1, the right end face is fixed to the right columns 2 a and 2 c, It protrudes in the frame 2 in parallel.
A gear box 1 having an input shaft 13 protruding rightward on a base plate 11.
2, an intermediate transmission shaft 14 protrudes forward from the gear box 12, and the intermediate transmission shaft 14
Is to be rotated.

Reference numeral 16 denotes a driving chain gear that rotates the rotary sieve 1, is rotatably supported by the chain transmission mechanism 15, and meshes with the lower right peripheral portion of the roller chain 10. When the input shaft 13 is connected to an appropriate power source and rotated, the drive chain gear 16 rotates and the rotary sieve 1 rotates in the direction of arrow a in the figure. The rotation speed of the rotary sieve 1 is 300 rpm at the input shaft 13.
When it is m, it is 26.4 rpm.

Reference numeral 17 denotes a floor falling guide plate which is provided on both sides of the lower half of the rotary sieve 1 so that the lower part of the sieve (which becomes floor soil) which has passed through the rotary sieve 1 is dropped onto the horizontal belt conveyor 18. ing. The horizontal belt conveyor 18 is fixed to the substrate 2e below the rotary sieve 1 and is provided horizontally in the front-rear direction. A lifting belt conveyor 19 having a base portion pivotally attached to a front end thereof projects forward obliquely upward. Have been. A rubber conveyor belt 21 is integrally wound around the horizontal belt conveyor 18 and the lifting belt conveyor 19, and the rubber conveyor belt 21 is prevented from rising at a position where the rubber conveyor belt 21 changes from horizontal to obliquely upward by pressing rollers 22, 22. I have.

The gear box 12 is provided with a belt conveyor drive chain gear 23, and a chain transmission mechanism 24 rotated by the belt conveyor drive chain gear 23 provides:
The rubber conveyor belt 21 is rotated so that the upper surface is conveyed forward. Reference numeral 25 denotes a raw material supply hopper, the upper part of which is fixed to girders 27, 27 projecting forward from the columns 2a, 2b, and the lower end of the opening of a downflow gutter 26 connected steeply downward is inserted into the front opening 3. Have been. Numeral 28 denotes a sieve-falling plate, which is attached to the cross beam 7 obliquely downward with the upper end surface of the concave plate approaching the lower peripheral edge of the rear opening 4 as in FIG.

The input shaft 13 of the gear box 12 is rotated by an appropriate power source, and the rotary sieve 1 and the horizontal belt conveyor 1 are rotated.
8. When the lifting belt conveyor 19 is rotated and the original soil is supplied to the original soil supply hopper 25 from above via a suitable conveying means, the original soil is sent rearward by the downward inclination of the rotary sieve 1 downward. Behaved while. Then, the lower part of the sieve falls on the horizontal belt conveyor 18 as floor soil, is conveyed forward and drops from the terminal end of the lifting belt conveyor 19, and the upper part of the sieve is rotated from the rear opening 4 through the sieve drop plate 28 through the sieve. 1 fall behind. The top of the sieve is coarse and not used for raising seedlings.

Next, a clogging prevention device according to the present invention will be described with reference to FIGS. FIG. 1 is a rear perspective view of a main part of the clogging prevention device, and FIG. 2 is a front perspective view of the same main part. In these figures, a vertical girder 3 is provided between the right front support 2a of the frame 2 and the rear support 2c.
0 is fixed horizontally outside the upper half of the rotary sieve 1 with the rotary sieve 1 through an appropriate gap. A bearing plate 29 protrudes from the rear surface of the column 2a above the stringer 30 so as to face the upper half of the rotary sieve 1, and a bearing plate 31 is erected at the rear end of the stringer 30 to attach an arm plate. The shaft 32 is rotatably supported at both ends thereof on bearing plates 29 and 31, and is provided parallel to the rotation center line of the rotary sieve 1 and with an appropriate clearance from the outer peripheral surface of the rotary sieve 1.

Reference numerals 33 and 34 denote vibrating rollers, and the arm plate 3
A roller 36 is pivotally supported 37 on the side of the upper end of the arm 5 and the base of the arm plate 35 is fixed to the arm plate mounting shaft 32 at an appropriate interval.
From the front to the rear, the rotary sieve 1 is arranged upward along the rotation direction of the sieve 1. The vibrating roller body 33 is the foremost one, and a plurality of vibrating roller bodies 34 are sequentially provided behind it. The roller 36 is made of hard rubber. Examples are
The arm plates 35 are arranged at intervals of 15 cm, and the rollers 36 are arranged in a line. However, the length of the arm plates 35 may be individually changed, and they may not be arranged in a line.

Numeral 39 denotes a spring arm, which protrudes outward from an intermediate portion of the arm plate 35 of the vibrating roller body 33 and has a protruding piece 40 fixed to the protruding end. Reference numeral 42 denotes a suspension rod, which is inserted from below into a bracket 43 fixed to the column 2a above the spring hook 39, and a nut 4
4 is screwed. The hook portions at both ends of the coil spring 41 are hooked to the projecting pieces 40 and the lower ends of the hanging rods 42, respectively, and are stretched between the spring hooking arm 39 and the hanging rod 42. The coil spring 41 rotates the arm plate mounting shaft 32 by its elasticity, and the vibrating roller bodies 33, 3
The lower peripheral surface of the roller 36 supported by the upper end of the roller 4 is elastically brought into contact with the surface of the rotary sieve 1. The spring arm 39 may protrude outward from the base end of the arm plate 35 of the vibrating roller body 33.

Reference numeral 45 denotes a bracket,
Rotating sieve 1 from the front of the column 2a above the vertical girder 30
To the upper half of the rotary sieve 1 along the surface of the rotary sieve 1 obliquely upward (see FIG. 2). Reference numeral 46 denotes a bracket fixed to the front surface of the bracket 45 at 47 and 47. The chain gear 4 meshes with the roller chain 10 provided around the front end of the rotary sieve on a bearing 48 fixed at the upper end.
9 is rotatably supported. Reference numeral 50 denotes a crank shaft having a front end fixed to the center of the chain gear 49, protruding rearward in parallel with the rotation center line of the rotary sieve 1, and a rolling wheel 5 provided at the rear end.
1 is rotatably mounted. The rotation ratio between the roller chain 10 and the chain gear 49 is determined so that the crankshaft 50 makes 4.5 rotations per rotation of the rotary screen 1.

Reference numeral 38 denotes an L-shaped arm plate rising piece, which fixes one end face of the L-shaped piece to the upper surface of the intermediate portion of the arm plate 35 of the vibrating roller body 33, and rotatably sieves the other piece of the L-shaped piece. 1, and is provided on the lower surface of the other L-shaped piece so that the upper surface of the rolling wheel 51 repeats contact and separation repeatedly when the crankshaft 50 rotates.

Next, the operation of the present invention will be described with reference to FIGS. The chain gear 49 meshing with the roller chain 10 (not shown) rotates in the rotation direction a of the rotary sieve 1, and the crankshaft 50 rotates in the direction of the arrow b. In the state shown in FIG. 3, since the rolling wheel 51 is not in contact with the lower surface of the arm plate rising piece 38, the spring hook arm 39 is pulled upward by the coil spring 41, and the arm plate mounting shaft 32 is rotated counterclockwise. The roller 36 at the upper end of the vibrating roller body 33 rotates around the pivot 37 while elastically contacting the surface of the rotary sieve 1.

As the rotation of the rotary sieve 1 progresses, the rolling wheel 51 comes into contact with the lower surface of the arm plate rising piece 38 as shown in FIG. Then, the arm plate raising piece 38 is raised by the crank amount of the crankshaft 50, the coil spring 41 is extended, and the arm plate mounting shaft 32 is rotated clockwise. The raising of the arm plate raising piece 38 raises the roller 36 of the vibrating roller body 33 from the surface of the rotary sieve 1 by c (about 65 mm).
When the rotation of the rotary sieve 1 further proceeds and the rolling wheel 51 comes off the arm plate rising piece 38, the coil spring 41 contracts due to its restoring force, rotates the arm plate mounting shaft 32 in the counterclockwise direction, and the roller 36 rotates. 1 descends and strikes the surface.

When the roller 36 of the vibrating roller body 33 moves up and down as described above, the vibrating roller body 34 also moves its arm plate 35
Is fixed to the arm plate mounting shaft 32, the roller 36 at the upper end moves up and down, and strikes the upper half surface of the rotary sieve 1 when descending. As described above, since the crankshaft 50 rotates 4.5 times per rotation of the rotary sieve 1, the vibrating roller bodies 33, 34 strike the rotary sieve 1 4.5 times during one rotation of the rotary sieve 1. It is. After all, five rollers 3
6 simultaneously struck the upper half of the rotary sieve 1 to give a strong vibration to the rotary sieve 1, and the raw soil having a high soil moisture content could be sieved without clogging.

[0030]

Since the present invention is configured as described above, it has the following effects.

A plurality of vibrating roller members are provided along the rotating direction of the rotary sieve at an upper half portion of one side of the rotary sieve from anterior to posterior at appropriate intervals, and the rollers at the upper end of the vibrating roller members are rotated. Since the rotation of the sieve is used as the driving force and the surface of the rotary sieve is knocked, vibration is applied to the entire rotary sieve, and even the soil with a high water content can be dropped from inside the sieve, preventing clogging of the rotary sieve. .

A plurality of vibrating roller bodies are provided at an appropriate interval from the front to the rear on an arm plate mounting shaft rotatably provided on the frame, while being opposed to the upper half of the rotary sieve in parallel with the rotary sieve. The lower part of the roller, which is rotatably attached to the upper end part, is elastically brought into contact with the surface of the rotating sieve. Can be adapted to the surface of the rotary sieve and rolled, so that the rotary power of the rotary sieve hardly increases.

The front end is fixed to the center of a chain gear meshed with the upper half of the roller chain provided around the front end of the rotary sieve, and the rear end of the crankshaft protruding rearward in parallel with the rotation center line of the rotary sieve. A rolling wheel is attached to the end, and an arm plate rising piece protrudes forward from the upper surface of the intermediate portion of the arm plate of the foremost vibrating roller body, and the upper surface of the rolling wheel rises as the rotating sieve rotates. By making contact with and separating from the lower surface of the piece, the roller at the upper end of each vibrating roller body can be reliably raised and lowered with respect to the surface of the rotary sieve.

A spring arm is projected from the outermost arm plate of the frontmost vibrating roller body, and a coil spring is stretched between a frame portion above the spring arm and the spring arm. The roller at the upper end of the vibrating roller body and the rear end of the vibrating roller body are elastically brought into contact with the surface of the rotating sieve, so that when the rollers of the vibrating roller body descend, the surface of the rotating sieve is resilient by the coil spring. Can be effectively beaten, the soil clogged in the sieve of the rotating sieve can be effectively removed, and the sieving action of the floor sifter can be streamlined.

[Brief description of the drawings]

FIG. 1 is a rear perspective view of a partially omitted main part showing an embodiment of a device for preventing clogging of a floor sieving machine of the present invention.

FIG. 2 is a perspective view of a main part of the front part.

FIG. 3 is a fragmentary front view taken along line AA of FIG. 2 for explaining the operation of the present invention;

FIG. 4 is a front view of a main part cut when the roll is raised.

FIG. 5 is an overall perspective view of a floor sieving machine embodying the present invention.

FIG. 6 is a rear perspective view of a main part showing a conventional technique.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Rotating sieve 2 Frame 3 Front opening 4 Rear opening 10 Roller chain 32 Arm plate attachment shaft 33, 34 Vibration roller body 35 Arm plate 36 Roller 38 Arm plate rising piece 39 Spring arm 41 Coil spring 42 Hanging rod 46 Bracket 48 Bearing 49 Chain gear 50 Crankshaft 51 Roller wheel

Claims (4)

[Claims] 1. A floor provided with a rotary sieve which is opened in front and rear ends and is supported obliquely downward from front to rear in a frame, and is rotated by a driving chain gear meshing with a roller chain provided around the outer periphery of the front end. In a soil sifter, a plurality of vibrators are provided on one upper half of the rotary sieve from anterior to posterior at an appropriate distance in the rotational direction of the rotary sieve, and the surface of the rotary sieve is driven by the rotation of the rotary sieve as a driving force. A device for preventing clogging of a floor sieving machine equipped with a roller body. 2. A plurality of arm plates are attached to an arm plate mounting shaft rotatably provided on the frame with a vibrating roller body opposed to an upper half portion of one side of the rotary sieve in parallel with the rotary sieve, and a plurality of arm plates are provided from the front to the rear. The base is fixed at an appropriate distance to the upper surface of the rotating sieve, and the lower peripheral surface of the roller attached to the upper end of each arm plate is elastically attached to the surface of the rotating sieve. 2. The device for preventing clogging of a floor soil sifter according to claim 1, wherein the device is brought into contact with the device. 3. A front end portion is fixed to a center of a chain gear meshed with an upper half portion of a roller chain provided on an outer periphery of a front end portion of a rotary sieve on a side on which a vibrating roller body is provided. A rolling wheel is attached to the rear end of the crankshaft protruding rearward toward the center of the foremost arm plate in parallel with the line, and an arm plate ascending piece is protruded forward from the middle of the foremost arm plate to rotate. With the rotation of the sieve, the upper surface of the rolling wheel comes into contact with and separates from the lower surface of the arm plate raising piece, and the rollers at the upper end of each of the vibrating roller bodies are raised and lowered with respect to the surface of the rotating sieve. 3. The apparatus for preventing clogging of a floor soil sifter according to claim 1, wherein the surface of the sieve is hit. 4. A spring arm is projected from the arm plate of the foremost vibrating roller body to the outside of the arm plate mounting shaft, and is provided between the frame portion above the spring arm and the spring arm. 3. The apparatus for preventing clogging of a floor sieving machine according to claim 2, wherein a coil spring is stretched over the lower surface of each of the vibrating roller bodies so that the lower peripheral surface of the roller is elastically brought into contact with the surface of the rotary sieve.