JPH0721178B2 - Rice husk underdrain device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to the formation of a rice husk underdrain for improving the soil layer by forming a rice husk underdrain filled with rice husks in a heavy clay paddy field having poor permeability and drainability. The present invention relates to a device, and more particularly to a rice husk underdrain forming device that forms a groove under the ground and fills the groove with rice husks.

[Prior Art] Conventionally, as a rice husk underdrain forming device of this type, for example,
The one shown in the figure is known (Japanese Patent Laid-Open No. 1187210/1989).
Issue publication).

This rice husk underdrain forming device stores a rice husk and a blade-like groove forming portion 2 that forms a groove under the ground in a connecting member 1 that is connected to a tractor or the like (not shown) for pulling the device. A hopper 3 and a tubular guide 5 that communicates with the outlet opening 3a of the hopper 3 via a pipe 4 and guides the rice husks flowing out of the hopper 3 into the groove formed by the groove forming portion 2 are provided. Further, the hopper 3 is provided with a plate-shaped shutter 6 which is manually slid to open and close the outlet opening 3a.

In the case of forming a large number of parallel rice husk culverts in a paddy field using this device, first, the device is arranged at a rice husk culvert formation location, and the shutter 6 is manually opened to an appropriate position to exit the hopper 3. While opening the opening 3a with the opening adjusted, the exciter 7 vibrates the groove forming portion 2 via the arm 7a, and the groove forming portion 2 cuts open below the ground by pulling with a contactor or the like. The rice husks flowing out from the hopper 3 are filled into the groove through the guide 5. Then, when the formation of one rice husk underdrain is completed, the shutter 6 is manually closed to stop the outflow of the rice husk, and then the rice husk underdrain forming device is lifted and inverted together with the tractor etc. The shutter 6 is opened again to form the next rice husk underdrain.

In addition, reference numerals 2a and 2b in FIG. 8 are attached to the lower end of the groove forming portion 2 and are a chisel and a bullet for forming a passage having a circular cross section underground, 8 is a wheel supporting the connecting member 1, and 9 is a wheel when stopped. It is a stand that supports the device.

[Problems to be Solved by the Invention] However, in such a conventional rice husk underdrain formation device, the rice husk may not be quantitatively and stably supplied, and the amount of the rice husk filled in the groove may be uneven. There was a problem that the rice husk culvert was not uniform due to the occurrence of the above.

One of the causes is that the shutter 6 that opens and closes the outlet opening 3a of the hopper 3 is pushed and pulled to be slid. Therefore, if there is a lot of rice husks on the shutter 6, the slide resistance increases due to the load, so it is difficult to close the shutter immediately. Therefore, this is because too much rice husks are produced when the rice husk supply is stopped at the end of groove formation.

Further, since the rice husks are concentrated at the outlet opening 3a of the hopper 3, the rice husks are likely to be clogged or stopped at the outlet opening 3a or in front of the outlet opening 3a, and the flow of the rice husk is unstable. Therefore, even if the opening degree of the shutter 6 is adjusted, the rice husk supply amount is substantially uncertain.

Therefore, an object of the present invention is to stabilize the outflow state of the rice husk so that the rice husk can be quantitatively filled in the groove.

[Means for Solving the Problem] The technical means of the present invention for solving the above-mentioned problems includes a groove forming portion for forming a groove under the ground, a hopper for storing rice husks, and an outlet opening of the hopper. In a rice husk underdrain forming device having a tubular guide that communicates the rice husks flowing out of the hopper into the groove formed in the groove forming portion, (1) a shutter for opening and closing the outlet opening is provided. It is formed into a cylindrical shape having a through hole and is axially supported by the outlet opening forming portion so that it can rotate in the outlet opening of the hopper, and the through hole of the shutter communicates with the hopper and the guide to open the outlet opening. A drive unit for rotationally driving the shutter is provided at two positions, i.e., an open position and a closed position where the through hole is closed and the outlet opening is closed.

Further, (2) an agitator provided above the outlet opening of the hopper for agitating the chaff and an air nozzle for ejecting air from the inside of the hopper toward the guide are provided as necessary.

Further, if necessary, (3) a slide plate slidably provided in the outlet opening forming portion to change the opening degree of the outlet opening and a slide plate provided above the advanced slide plate to exit the rice husk on the slide plate. And a spiral auger fed into the effective opening of the opening.

[Operation] According to the rice husk underdrain forming device according to the first aspect of the present invention, the shutter is rotated by the drive unit to open and close the outlet opening of the hopper,
It can be opened and closed immediately because it can rotate in the outlet opening.

According to the rice husk underdrain forming device according to the second aspect of the invention, the rice husk is stirred by the agitator above the outlet opening of the hopper, whereby the rice husk that tends to be clogged and concentrated in the outlet is destroyed, and the rice husk will be retained at the opening end. The rice husk to be forced is sent toward the guide by the air ejected from the air nozzle.

According to the rice husk underdrain forming device according to the third aspect of the invention, the opening of the outlet opening is adjusted by the slide plate, and even if the rice husk tries to stay on the slide plate that has advanced, the rice husk is forcibly effective by the auger. It is sent to the opening.

[Embodiment] Hereinafter, a rice husk underdrain forming apparatus according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings.

A rice husk underdrain forming apparatus according to an embodiment, as shown in FIGS. 1 to 5, includes a machine frame 10 and a groove forming section for forming a groove under the ground.
15, a hopper 20 for retaining the rice husks M, and a tubular guide 25 that communicates with the outlet opening 21 of the hopper 20 and guides the rice husks M flowing out of the hopper 20 into the groove formed by the groove forming portion 15. ing.

The front portion 11 of the machine casing 10 has a connecting portion connected to a crawler type or wheel type tractor T for pulling the apparatus.
12 are formed. In addition, as shown in FIG.
A mesh-shaped mounting plate 13 for mounting a bag of rice husks M is provided around the periphery of the front portion 11 except for the front portion 11.

The groove forming portion 15 is inserted under the ground and is formed into a blade shape that cuts open under the ground by the pulling force of the tractor T or the like to form a groove, and is fixed to the rear side of the front portion 11 of the machine frame 10. It is installed and hangs below this machine frame 10. Groove forming part 15
A scoop portion 16 is formed at the lower end of the.

The hopper 20 is formed in the shape of a quadrangular prism, the lower side of which is a conical tip, and an outlet opening 21 having a rectangular cross section that extends in the front-rear direction of the apparatus is formed at the tip end portion.
As shown in FIG. 3, the outlet opening 21 is formed by a cylindrical opening forming portion 22 having a predetermined width L1 in the vertical direction. The hopper 20 is fixed to the machine frame 10 via a support member 23 and is supported by a guide 25 described later. Further, as shown in FIG. 2, the wall portion of the hopper 20 is provided with a transparent window 24 through which the amount of the rice husks M can be visually observed.

The guide 25 is formed in a substantially rectangular parallelepiped tubular shape (for example, a vertical length of about 90 cm, a width in the front-rear direction of 65 cm, and a thickness of about 7 cm) and is integrally connected to the rear side of the groove forming portion 15. In addition, the upper end portion 25a is connected to the opening forming portion 22. Further, as shown in FIG. 4, the upper end portion 25a is formed so that its side plate is formed in a tapered shape and bulges downward. Further, as shown in FIGS. 4 and 7,
About two-thirds of the lower side of the rear side of the guide 25 is open, and as shown in FIG. 3, the lower rear side of the guide 25 is cut out to form a cutout portion 26. Furthermore, guide 25
The lower side of the front side surface of the rice husk passage is formed as a guide surface 27 curved in a concave shape.

Further, the rice husk underdrain forming apparatus according to the embodiment is shown in FIGS.
As shown in FIG. 6 and FIG. 6, a shutter 30 for opening and closing the outlet opening 21 of the hopper 20 is provided. The shutter 30 is formed in a columnar shape having a through hole 31 penetrating the axis line, and a rotary shaft provided at both ends so that the shaft can rotate along the front-rear direction of the device in the outlet opening 21. 32 is pivotally supported on the opening forming portion 22. In addition, this rice husk underdrain forming device is configured such that the shutter 30 has an opening position A in which the through hole 31 communicates with the hopper 20 and the guide 25 to open the outlet opening 21 and the through hole 31 in a non-communicating state. A drive unit 34 for rotationally driving it to two positions, that is, a closed position B that closes 21 is provided. As shown in FIG. 4, the drive unit 34 fixes the arm 35 to the rotary shaft 32 protruding from the rear side of the opening forming unit 22 and urges the arm 35 so that the shutter 30 is in the closed position B. Is provided on the rear side of the opening forming portion 22, and the arm 35 is spring-loaded.
Pull the shutter 30 against the urging force of the shutter 36 to open the shutter 30 at the open position A.
The pulling mechanism 37 is provided. The pulling mechanism 37 includes a wire 38 that pulls the shutter 30, and a lever 39 that is installed on the tractor T side and that pulls the wire 38.

Further, above the outlet opening 21 of the hopper 20, as shown in FIGS. 3, 5, and 6, an agitator for stirring the rice husks M is provided.
40 are provided. The agitator 40 includes a shaft 41 that is rotatably supported by penetrating the front and rear walls of the hopper 20, a plurality of stirring rods 42 fixed to the front side of the shaft 41, and a shaft.
It is composed of a spiral auger 43 fixed to the rear side of 41 and feeding the rice husk M to the center side of the outlet opening 21 while stirring the rice husk M. As shown in FIGS. 2 and 5, the shaft 41 of the agitator 40 is rotated by a belt transmission mechanism 44 provided in the machine frame 10 and transmitting a power source on the tractor T side. Further, at the front end portion of the outlet opening 21 on the lower side of the agitator 40 and on the upper side of the rear side of the outlet opening 21 on the upper side of the agitator 40, an air nozzle 45 for ejecting air toward the guide 25.
Is provided. As shown in FIG. 5, the air supply source to the air nozzle 45 is a rotary compressor.
46, which is attached to the machine casing 10 and is driven by the belt transmission mechanism 44 described above.

In addition, below the agitator 40, FIGS.
As shown in the figure, a slide plate slidably provided on the rear side of the opening forming portion 22 and advancing to change the opening degree of the outlet opening 21.
50 are provided. The slide plate 50 is formed to have a length that closes the outlet opening 21 by about two fifths at the time of maximum advance, and is moved forward and backward by the feed screw mechanism 51. The feed screw mechanism 51 rotates a female screw portion 52 provided on the slide plate 50, a male screw portion 54 rotatably mounted on a mounting portion 53 on the rear side of the opening forming portion 22 and screwed to the female screw portion 52, and a male screw portion 54. It is composed of a handle 55 and a handle. The auger 43 for feeding the rice husks M on the slide plate 50 into the effective opening portion 21a of the outlet opening 21 is located above the advanced slide plate 50.

Furthermore, as shown in FIGS. 1 and 2 (not shown in other drawings), both sides of the front portion 11 of the machine frame 10 support the device while sliding on the ground, A leg-shaped support slider 60 is provided which keeps the depth of the groove forming portion 15 below the ground constant. This support slider 60
Is attached to the machine frame 10 so that the vertical position can be adjusted so that the depth of the groove forming portion 15 can be adjusted by changing its grounding position. Further, a plurality of rod-shaped stands (not shown) for supporting the device are detachably attached to the machine frame 10 when the device is not used.

In FIG. 1, reference numeral 61 is a mirror provided on the hopper 20 for checking the rear of the device.

Therefore, by the rice husk underdrain forming device according to this embodiment,
For example, in the case of forming a large number of parallel rice husk culverts in a paddy field, as shown in FIG. 7, the rice husk M is housed in the hopper 20 in advance, and the slide plate 50 holds the handle 55 of the feed screw mechanism 51. It is advanced to an appropriate position by operation, and the opening degree of the outlet opening 21 of the hopper 20 is set to a required value.

Then, this device is arranged at the rice husk underdrain formation position, the shutter 30 is set to the open position A by operating the lever 39, and the device is pulled by the tractor T or the like while driving the shaft 41 of the agitator 40 and the compressor 46. . As a result, the bottom of the ground is cut open by the groove forming portion 15 to form a groove, and the rice husk M flows out from the hopper 20 and is filled in the groove through the guide 25.

In this case, when the shutter 30 is set to the open position A, the shutter 30 is rotated in the outlet opening 21 by the drive unit 34, and therefore the shutter 30 can be easily moved even if the load of the rice husk M acts. Therefore, the through hole 31 is immediately communicated with the outlet opening 21. Therefore, the rice husks M are surely supplied from the beginning of the towing of the device.

Further, in the tow stroke of the apparatus, since the rice husks M are agitated by the agitator 40 above the outlet openings 21 of the hopper 20, even if the rice husks M are concentrated at the outlet and try to be clogged or stopped, the rice husks M will be collapsed. The broken rice husks M are forcibly sent toward the guide 25 by the air ejected from the air nozzle 45, so that the rice husk M flows out to the guide 25 without being clogged or stopped. Especially the hopper 20
Although the rice husk M tends to stay at the end of the outlet opening 21 due to the frictional resistance with the inner surface of the air outlet, the air nozzle 45 is provided at the end of the outlet opening 21. The flow of the rice husks M on the end face becomes smooth, and the rice husks M are surely sent to the guide 25 by suppressing the staying together with the stirring. Therefore, since the situation in which the rice husks M are clogged or stayed is suppressed, the flow of the rice husks M is stabilized, and the rice husks M are quantitatively filled in the grooves through the guides 25.

Further, since the rear side of the guide 25 is opened and the chaff M is guided to the rear side by the curved guide surface 27, the chaff M is discharged from the rear side. Therefore, the lower surface of the guide 25 and the bottom surface of the groove are separated from each other. Prevents the rice husk M from being clogged between
The rice husks M are reliably filled.

Furthermore, in this case, the rice husk M on the slide plate 50 that has advanced
Is easy to stay, but the auger 43 portion of the agitator 40 feeds it into the effective opening 21a, so the slide plate 50
The situation in which the upper rice husk M stops is prevented. Moreover, since air is jetted from the air nozzle 45 on the slide plate 50, the rice husk M is also agitated and sent to the guide 25 by this air jetting.
The retention of the rice husk M is suppressed.

When the formation of one rice husk underdrain is completed, the shutter 30 is set to the closed position B. In this case, since the shutter 30 is rotated in the outlet opening 21 by the drive unit 34, the shutter 30 is easily moved even when the load of the rice husk M is applied, so that the outlet opening 21 is immediately closed. Therefore, the rice husk supply is surely stopped at the end of the formation of one rice husk underdrain, and the situation where too many rice husks M are produced is prevented.

Then, the rice husk culvert forming device is lifted and inverted together with the tractor T, etc., the device is lowered to the next rice husk culvert forming position, and the shutter 30 is set to the open position A again to form the next rice husk culvert.

In the above embodiment, the groove forming portion 15 has a blade shape, but it is not necessarily limited to this, and a chain, a rotor, an auger, or other type of excavating type may be used and appropriately changed. It doesn't matter. Further, the drive unit 34 of the shutter 30 is configured so that the arm 35 is rotated by the lever 39 via the wire 38, but the present invention is not limited to this, and the arm 35 can be manually rotated. May be provided, or may be appropriately changed such as being configured to rotate by a geared motor.

[Advantages of the Invention] As described above, according to the rice husk underdrainage forming device of the present invention, it is possible to stabilize the outflow state of the rice husk and to quantitatively fill the rice husk into the groove, and to improve the drainage effect. A culvert can be formed.

That is, according to the rice husk underdrain forming device according to the first aspect of the present invention, the shutter has a through hole through which the rice husk passes, passing through its axis, and rotating in the outlet opening by rotating the cylindrical axis. Therefore, even if the load of the rice husk is applied, it can be easily moved, and the through hole can be opened or closed immediately to open and close the outlet opening.

Moreover, since the shutter is rotated by being supported by the rotary shafts at both ends, the support is stable and the rotation can be surely performed.

Therefore, it is possible to prevent the rice husk from being insufficient or excessive at the start and end of the formation of the rice husk underdrain, and to stabilize the outflow state of the rice husk to quantitatively fill the groove with the rice husk.

Further, since the shutter can be opened and closed by rotation, and an unreasonable load is not applied to the rotary shaft, the operation is facilitated and the operability such as remote operation is improved.

According to the rice husk underdrain forming device according to the second invention, above the outlet opening of the hopper, since the rice husk is agitated by the agitator, the rice husk is collapsed even if the rice husk concentrates at the outlet and is attempted to be stopped, and this The crushed rice husks are forcibly sent toward the guide by the air ejected from the air nozzle, so that they flow out to the guide without being clogged or stopped. As a result, it is possible to stabilize the outflow state of the rice husk and to fill the groove with the rice husk quantitatively.

According to the rice husk underdrain forming device of the third invention, the opening of the outlet opening is adjusted by the slide plate, and the rice husk on the slide plate is forcibly fed into the effective opening by the auger. The amount of outflow can be adjusted while preventing the rice husks from staying at 1, and in this respect also, there is an effect that the outflow state of the rice husk can be stabilized and the rice husk can be quantitatively filled in the groove.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view showing a rice husk culvert forming device according to an embodiment of the present invention together with its use state, and FIG. 2 is a front view showing the rice husk culvert forming device according to the embodiment, 3 is the side view,
FIG. 4 is a rear view thereof, FIG. 5 is a plan view thereof, and FIG. 6 is a perspective view showing an essential part of a rice husk underdrain forming apparatus according to an embodiment.
FIG. 8 is a side sectional view showing an operation of the rice husk underdrain forming apparatus according to the embodiment, and FIG. 8 is a side view showing an example of a conventional rice husk underdrain forming apparatus. M: Rice husk 10: Machine frame 15: Groove forming part 20: Hopper 21: Exit opening 22: Opening forming part 25: Guide 30 ... Shutter 31 ... Through hole A ... Opening position B ... … Closing position 34 …… Drive unit 40 …… Agitator 42 …… Stirring rod 43 …… Auger 45 …… Air nozzle 46 …… Compressor 50 …… Slide plate 51 …… Feed screw mechanism

Claims (3)

[Claims] 1. A groove forming portion for forming a groove under the ground, a hopper for storing rice husks, and a tube which communicates with an outlet opening of the hopper and guides the rice husks flowing out of the hopper into the groove formed by the groove forming portion. In a rice husk underdrain forming device including a guide and a shutter for opening and closing the outlet opening, the shutter is formed in a cylindrical shape having a through hole penetrating the axis, and a rotation axis having the axis as the axis is provided at both ends. An opening that pivotally supports the rotation shaft on the outlet opening forming portion so that the shutter can rotate in the outlet opening of the hopper, and the through hole of the shutter communicates with the hopper and the guide to open the outlet opening. Forming a rice husk underdrain provided with a drive unit for rotationally driving the rotation shaft of the shutter so as to position the shutter at two positions, a position and a closed position where the outlet is closed and the outlet opening is closed. apparatus. 2. The formation of rice husk underdrain according to claim 1, further comprising an agitator provided above the outlet opening of the hopper for agitating the rice husk, and an air nozzle for ejecting air from inside the hopper toward the guide. apparatus. 3. A slide plate slidably provided in the outlet opening forming portion to advance and change the opening of the outlet opening,
The rice husk culvert forming device according to claim 1 or 2, further comprising: a spiral auger provided above the slide plate that has advanced to feed the rice husk on the slide plate into an effective opening portion of the outlet opening.