JP2002114351A - Belt conveyor device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a belt conveyor device capable of reducing work labor when replacing a carrier belt. SOLUTION: One side plate 254 of the belt conveyor device 250 is formed in a size allowing attachment/detachment of the carrier belt 276. The other side plate 256 is rotatably connected with a frame 260 by a hinge 282. The other side plate 256 is provided with a lifting means comprising a support 284, a block 286 and a tension bolt 29. Therefore, when the tension bolt 292 is rotated in a screwing direction, the block 286 is pulled to ward the support 284 side and the other side plate 256 is rotated around the hinge 282 and the one side plate 254 side is floated and thereby the worn carrier belt 276 can be replaced with a new one.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a belt conveyor device capable of reducing the labor required for replacing a conveyor belt.

[0002]

2. Description of the Related Art In recent years,
2. Description of the Related Art Raising seedlings of crops such as paddy rice in a nursery is performed. There have been times when soil cultivation was used as the bed soil for such nurseries, but there were disadvantages such as good quality (homogeneous) soil cultivation being relatively expensive and difficult to obtain. As a prior art document in which this point is improved, there is a technique disclosed in Japanese Patent Publication No. 56-18165, in which a hydrophilic urethane prepolymer is used as a binder, and a plant soil material (such as bark, pulp chips, sawdust, etc.) is composted. Bark compost, etc.) is consolidated and then dried. Incidentally, polyvinyl alcohol or starch may be used as the binder in some cases. This kind of medium for raising seedlings has an advantage that so-called industrial waste such as bark and pulp chips can be effectively used as a cultivation material, and that a plant cultivation material is relatively inexpensive.

However, even with the medium for raising seedlings disclosed in the above-mentioned publication, it takes a long time (for example, about 1 to 3 hours) to bind the soil culture material (consolidation and drying using the bonding material), and mass production is not possible. Difficult and consequently high cost.Also, although the embankment material itself is relatively inexpensive, the binder material such as a hydrophilic urethane prepolymer is expensive, so that the overall result is expensive. And other issues remained.

Therefore, the applicant has agitated and mixed a group of crushed rice husks obtained by crushing rice hulls with a binder or the like to form a cultivation soil for raising seedlings, and then used a pair of upper and lower belt conveyors. Thus, a system for producing a seedling culture medium has been proposed in which a medium for seedling growth is formed by heating and cooling and compression molding from above and below, and then cut to a predetermined size and accumulated (see JP-A-2000-14242). ).

[0005] Fig. 7 is a perspective view showing the overall configuration of a belt conveyor device 300 used in the system for producing a seedling culture medium. As shown in this figure, the belt conveyor device 300 includes a pair of side plates 302 arranged in parallel with each other. Channel steel is used for the side plate 302, and is fixed to the upper surface of the gantry 304 with fixing bolts 306. A pair of driving pulley shafts 31 are provided between the pair of side plates 302 via bearings 308 and 310.
2. The driven pulley shaft 314 is supported. A driving pulley 316 is fixed to the driving pulley shaft 312,
A driven pulley 318 is fixed to the driven pulley shaft 314. These drive pulley 316 and driven pulley 31
A conveyor belt 320 is wound around the outer peripheral surface of the belt 8, and a predetermined tension is applied by a belt tension adjusting mechanism 322.

Here, the belt conveyor device 30 described above is used.
Since the 0 transport belt 320 is a member that is worn due to wear and the like, it is necessary to periodically check the presence / absence and degree of wear and the like, and replace it with a new transport belt as needed.

At this time, in the case of the structure of the conventional belt conveyor device 300 described above, the following work procedure is performed. That is, first, from the state shown in FIG. 8A, the fixing bolt 306 is removed from both side plates 302 as shown in FIG. 8B. Next, as shown in FIG. 8C, both side plates 302 are lowered from the gantry 304,
The entire belt conveyor device 300 is turned over (inverted). Then, as shown in FIG.
After removing the side plate 302 together with the bearings 308 and 310 from the driving side pulley shaft 312 and the driven side pulley shaft 314, the conveyor belt 320 is pulled out and replaced with a new conveyor belt. After the replacement, return to the original state by the reverse procedure.

[0008] Thus, the conventional belt conveyor device 30
In the case of the structure of No. 0, the work of turning over (inverting) the entire belt conveyor device 300 and the work of removing one of the side plates 302 are required.

The present invention has been made in view of the above circumstances, and has as its object to provide a belt conveyor device capable of reducing the labor required for exchanging a conveyor belt.

[0010]

According to a first aspect of the present invention, a belt conveyor device according to the present invention includes a pair of side plate portions which are disposed substantially parallel to each other and which is detachably fixed to a gantry, and is provided in a longitudinal direction of the side plate portions. A belt conveyor device comprising: a pair of pulleys that are spaced apart from each other and are each pivotally supported by a pair of side plate portions; and a transport belt wound around the pair of pulleys, wherein one side plate is provided. A hinge portion for rotatably connecting the other side plate portion to the gantry on the other side plate portion side; and the other side plate portion on the other side plate portion side. Lifting means for rotating the other side plate portion around the hinge portion by applying a predetermined external force to the portion to lift the one side plate portion from the gantry.

According to a second aspect of the present invention, in the belt conveyor device according to the first aspect of the present invention, the lifting means is fixed to the other side plate portion, and a bolt is screwed into the belt in a belt width direction. An external force receiving portion having a hole formed therein,
A support member fixed to a gantry supporting the other side plate portion and having a bolt insertion hole formed coaxially with the bolt screw hole; and a bolt inserted into the bolt insertion hole of the support member and having a distal end formed by the bolt And a tension bolt that is screwed into the screw hole and rotated around the axis to pull the external force receiving portion toward the support member.

According to the present invention, the transport belt of the belt conveyor device can be replaced as follows.

First, a predetermined external force is applied to the other side plate of the belt conveyor device by using the lifting means. Thus, the other side plate rotates around the hinge, and the one side plate rises from the gantry supporting it. In other words, by performing a predetermined operation using the lifting means,
The entire belt conveyor device can be tilted around the hinge. Further, in the present invention, since the one side plate portion is formed in a size capable of extracting the transport belt, the transport belt can be extracted from the pair of pulleys when the belt conveyor device is inclined.

When the conveyor belt is removed, a new conveyor belt for replacement is wound around a pair of pulleys. Thereafter, the lifting means is used again to apply an external force to the other side plate in a direction opposite to the direction in which the belt was removed, or to cancel the external force applied to the other side plate. As a result, the other side plate rotates around the hinge in the direction opposite to the direction when the belt is removed, and the one side plate is placed again on the gantry and fixed.

In this way, the conveyor belt of the belt conveyor device can be easily replaced. Therefore, as in the conventional case, the entire belt conveyor device is turned over (inverted).
It is not necessary to perform the operation of removing the one side plate portion and the operation of removing the side plate portion.

Further, according to the present invention, since the hinge portion and the lifting means are provided on the other side plate portion side, there is no need to install a transfer belt exchanging device independently of the belt conveyor device.

According to the present invention, when the tension bolt is screwed into the bolt screw hole, the tension bolt moves in the axial direction while being inserted into the bolt insertion hole of the support member. Instead, the external force receiving portion is drawn toward the support member by a stroke corresponding to the bolt rotation speed. Since the support member is fixed to a gantry supporting the other side plate portion and the external force receiving portion is fixed to the other side plate portion, when the external force receiving portion is pulled toward the support member side, the other around the hinge portion. The side plate rotates, and one side plate rises from the gantry supporting it. The subsequent operation is as described in claim 1 above.
This is the same as the invention described in (1).

[0018]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a belt conveyor device according to the present invention will be described below with reference to FIGS.

First, the seedling culture medium (formed mat) 10 manufactured by the seedling culture medium manufacturing system using the belt conveyor device according to the present embodiment will be described.

As shown in FIG.
Is mainly composed of a crushed rice hull group 12 serving as a medium base material, a binder 14 composed of a core-sheath type fiber, and an element group 16 composed of various elements such as fertilizer for raising seedlings necessary for producing the medium. It is configured. As shown in FIG. 3, the core-sheath fiber used as the binder 14 is
A and a sheath portion 14B, which are complex and fine net-like. The sheath 14B softens at a predetermined temperature (eg, 110 ° C.), while the core 14A softens at a higher temperature (eg, 250 ° C.). As shown in FIG. 1, the element group 16 includes a mixed solution 1 of a fertilizer for raising seedlings (a fertilizer for medium-term growing, a fertilizer for initial growing, etc.), a pH adjuster, and a germination inhibitor remover.
In addition to 34 and the surfactant 108, other elements 116 such as an agent for propagation of high-quality soil bacteria are included.

To further supplement, in this embodiment, FIG.
As shown in FIG. 4 and FIG.
In order to insert 0, the seedling culture medium 10 is formed in a mat shape having a vertical dimension of 28 cm, a horizontal dimension of 58 cm, and a thickness dimension of 2 cm, but the dimensions are appropriately changed as necessary.

Next, a system for producing a seedling culture medium using the belt conveyor device according to the present embodiment will be described.

FIG. 1 is a flow chart showing all the steps of the system for producing a seedling culture medium according to the present embodiment. FIG.
In the rice husk supply step shown in FIG.
Is used. The rice husk supply device 20 includes a device main body 22 provided with wheels 22A, and a rice husk group 26 mixed with waste rice is supplied from a rice hull group supply port 24 in the device main body 22. A screw conveyor 28 is provided in the apparatus main body 22, and the crushed rice-mixed rice hulls 26 supplied into the apparatus main body 22 are conveyed by the screw conveyor 28 in the arrow direction. On the downstream side of the apparatus main body 22 in the conveying direction, a fryer cylinder 30 extending in the apparatus height direction is provided upright, and the waste rice hulls group 26 conveyed by the screw conveyor 28 is used for frying such as a slotter (not shown). After the inside of the fryer cylinder 30 is fried by the above, it is discharged from the chaff group discharge port 32 formed at the upper end of the fryer cylinder 30.

In the waste rice separation step shown in FIG.
A waste rice separation device 40 is used. The waste rice separation device 40 includes a funnel-shaped supply hopper 42 in the upper stage,
Rice husk group 2 mixed with waste rice discharged from rice hull group outlet 32
6 is supplied into the supply hopper 42. Supply hopper 4
A feed valve 44 is provided at the lower end of the second unit 2, and a tank-like sorting unit 46 is further provided below the feed valve 44. A flat upper inclined plate 48 is disposed below the delivery valve 44 in the sorting unit 46 at a predetermined inclination angle, and a flat lower inclined plate 50 is provided near the lower end of the upper inclined plate 48. Are arranged at a predetermined inclination angle. The lower part of the sorting unit 46 has a funnel shape, and the lower end thereof is opened to serve as a waste rice discharge port 52. Below the waste rice discharge port 52, a waste rice storage box 56 for storing the waste rice 54 is provided. Further, the above-described sorting unit 4
6 is connected to one end of a wind selection duct 58. A suction fan 60 is connected to the other end of the wind selection duct 58, and the sorted rice hulls 62 are discharged from a discharge port 60 </ b> A of the suction fan 60.

In the rice husk crushing step shown in FIG.
A rice husk crusher 70 is used. A funnel-shaped supply hopper 72 is provided in the upper stage of the rice husk crushing device 70, and the rice hull group 62 discharged from the discharge port 60 </ b> A of the suction fan 60.
Is supplied into the supply hopper 72. A feed valve 74 is provided at the lower end of the supply hopper 72, and a pulverization processing unit 76 having a horizontal spire shape is provided below the supply hopper 72, that is, in the middle of the rice husk crusher 70. A pulverizing drum 78 is provided in the pulverizing section 76. The crushing drum 78 rotates around an axis by receiving a driving force from a driving unit 80 provided at a lower stage of the rice hull crushing device 70, thereby performing a crushing process so as to grind the rice husk group 62. The crushed rice hull group 12 that has been subjected to the crushing process is configured to be discharged from the crushed rice hull group discharge port 82 at the tip end of the crushing processing unit 76.

The element group fixed supply step shown in FIGS. 1 (D-1) to 1 (D-3) includes the element supply step shown in FIG. 1 (D-1) and the element supply step shown in FIG. 1 (D-2). And a step of supplying a liquid fertilizer etc. shown in FIG. 1 (D-3).

In the element supply step shown in FIG. 1 (D-1), an element supply device 90 is used. Element supply device 90
Is provided with a belt conveyor device 94 that moves the transport belt 92 in the direction of the arrow when driven. Above the belt conveyor 94, a first supply unit 96, a second supply unit 98, and a third supply unit 100 are arranged in this order along the transport direction. The binder 14 is accommodated in the first hopper 102 provided in the first supply unit 96, and a predetermined amount of binder 1 is supplied by operating the first feed valve 104.
4 is dropped on the transport belt 92.
Further, a surfactant 108 is contained in a second hopper 106 provided in the second supply unit 98, and the second delivery valve 1
A predetermined amount of the surfactant 108 is dropped onto the transport belt 92 by the operation of the operation of the ten. Further, other elements 116 are accommodated in a third hopper 112 provided in the third supply unit 100, and a predetermined amount of the other elements 116 falls on the transport belt 92 by operating the third feeding valve 114. It is supposed to be. Note that the above-described first supply unit 96 to third supply unit 10
0 is operated by a timer (not shown) so as to supply a predetermined amount of each element to an element supply port 144 of a stirring and mixing tank 142 described later (that is, to supply a fixed amount). Has become.

In the step of supplying the crushed chaff group shown in FIG. 1 (D-2), a crushed chaff group supply device 120 is used. The crushed rice husk group supply device 120 includes
And a funnel-shaped supply hopper 122 to which the crushed chaff group 12 discharged from the crushed chaff group discharge port 82 of the crushing processing unit 76 is supplied. A base end of a horizontally elongated casing 124 is connected to a lower end of the supply hopper 122. A screw conveyor 126 is accommodated in the casing 124, and is rotated around its axis by receiving a driving force, so that the crushed rice hulls 12
Is transported. Also, the casing 124
A ground chaff group discharge port 128 is formed at the bottom portion on the tip side of the pulverized chaff group, and the ground chaff group 12 conveyed by the screw conveyor 126 is discharged from the ground chaff group discharge port 128. The above-described crushed rice hull group supply device 120 is operated by a timer (not shown), and a predetermined amount of the crushed rice hull group 1 is set in advance.
2 is an element supply port 144 of a stirring and mixing tank 142 described later.
(That is, constant-rate supply).

In the liquid fertilizer supply step shown in FIG. 1D-3, a liquid fertilizer spray supply device 130 is used. The liquid fertilizer spray supply device 130 includes a storage tank 132. Liquid fertilizer and PH adjuster
A mixed solution 134 of a germination inhibitor remover is stored, and a predetermined amount of the mixed solution 13 is set by driving a pump 136 by a timer (not shown).
4 is an element supply port 144 of a stirring and mixing tank 142 described later.
It is designed to be sprayed (that is, metered supply).

In the stirring and mixing step shown in FIG.
A stirring and mixing device 140 is used. Stirrer / mixer 140
Has a stirring and mixing tank 142. An element supply port 144 is formed at the upper end of the stirring and mixing tank 142, and the above-described crushed rice hulls 1
2 and the binder 14 are supplied, and the mixed solution 13
4 is sprayed. Further, in the stirring and mixing tank 142, a stirring blade 146 that rotates in the direction of the arrow around the axis when receiving a driving force is disposed. Further, at the lower end of the stirring and mixing tank 142, a cultivation soil discharge port 150 for discharging the cultivation soil for seedling 148 generated by the stirring and mixing is formed. The soil release port 150 can be opened and closed by a lid 152. In addition, a belt conveyor device 156 that moves the transport belt 154 in the direction of the arrow by driving is disposed immediately below the lid 152 in the stirring and mixing tank 142.

In the compression molding step shown in FIG.
A compression molding device 160 is used. Compression molding device 160
Is provided with a pair of upper and lower lower belt conveyor devices 162 and an upper belt conveyor device 164. The conveyor belt 166 of the lower belt conveyor device 162 and the conveyor belt 168 of the upper belt conveyor device 164 are vertically separated (opposed) by a predetermined distance, and the distance is the thickness of the forming medium 185 described later. I have decided. Also,
Although the upper belt conveyor device 164 and the lower belt conveyor device 162 have the same end positions on the downstream side in the transport direction, the transport length of the upper belt conveyor device 164 is longer than the transport length of the lower belt conveyor device 162. It is set short. That is, the upper belt conveyor device 164
Are arranged in a state of being shifted to the downstream side in the transport direction of the lower belt conveyor device 162.

By adopting the above layout, a predetermined upper space is secured upstream of the lower belt conveyor device 162 in the transport direction, and a funnel-shaped hopper 170 formed in a funnel shape is disposed in the upper space. Have been. A feeding valve 1 is provided at the lower end of the cultivation soil supply hopper 170.
A predetermined amount of seedling cultivation soil 148 is discharged onto the transport belt 166 of the lower belt conveyor device 162 by operating the feeding valve 172. Further, a pair of equalizing screws 174 and 176 are arranged between the cultivation soil supply hopper 170 and the upper belt conveyor device 164. These equalizing screws 174 and 176 play a role in rotating the seedling cultivation soil 148 supplied from the soil cultivation supply hopper 170 in the axial direction (the width direction of the transport belt 166) by rotating around the axis thereof.

At the above-mentioned opposed portions of the conveyor belt 166 of the lower belt conveyor device 162 and the conveyor belt 168 of the upper belt conveyor device 164, a pair of upper and lower heating and compression plates 178 and 180 and a cooling and compression plate 182 are formed. 1
84 are provided. The heating compression plates 178 and 180 are arranged on the upstream side in the transport direction, and the cooling compression plates 182 and
Reference numeral 84 is arranged on the downstream side in the transport direction. Heating compression board 1
Since the detailed structures of the cooling plates 78 and 180 will be described later, only the configuration of the cooling compression plates 182 and 184 will be briefly described here. The cooling compression plates 182 and 184 are configured with a water pipe (not shown) as a main part. A circulating pump and a cooling water tank are connected to the water pipe, and when the circulating pump is operated, cooling water circulates in the water pipe to cool the cooling compressors 182 and 184 at a predetermined temperature (for example, 20 ° C. to 30 ° C.).
° C).

A continuous long mat-shaped forming medium 185 formed by performing the heating compression and the cooling compression sequentially by the above-described compression molding apparatus 160 is provided downstream of the lower belt conveyor 162 and the upper belt conveyor 164 in the transport direction. It is configured to be discharged from a molding medium discharge port 186 formed between the ends on the side.

In the forming medium cutting step shown in FIG. 1 (G), a mat cutting device 190 is used. The mat cutting device 190 includes a casing 192. On one side of the casing 192, a mat insertion port 194 into which a continuous long mat-shaped forming medium 185 formed in the compression molding step is inserted is formed, and on the other side of the casing 192, A mat outlet 196 for discharging the seedling culture medium (formed mat) 10 after cutting is formed. Further, inside the casing 192, a pair of fixed blades 198 and a movable blade 200 are arranged above and below the transport path of the long mat-shaped molding medium 185. In addition,
The fixed blade 198 is disposed below the transport path,
The movable blade 200 is disposed above the transport path.
In addition, the movable blade 200 is lowered by receiving a driving force of a driving unit (not shown) at a predetermined timing, and cuts down (fixed size cutting) the forming medium 185. Thereby, the seedling raising medium (formed mat) 10 is formed.

In the step of accumulating a seedling culture medium (formed mat) shown in FIG. 1H, a mat accumulating device 210 is used. The mat accumulating device 210 includes a first belt conveyor device 212 and a second belt conveyor device 214. The first belt conveyor device 212 is a mat cutting device 1
It is arranged below the mat discharge port 196 at 90, and receives the seedling culture medium 10 cut to a predetermined size on the transport belt 216 and transports it in the direction of the arrow. On the other hand, the second belt conveyor device 214 is disposed immediately below the first belt conveyor device 212 on the downstream side in the transport direction, and when a predetermined number of seedling culture media 10 are accumulated on the transport belt 218, the seedling The medium for use 10 is transported in the direction of the arrow.

Next, with reference to FIGS. 5 and 6, the configuration of the belt conveyor device 250, which is a main part of the present embodiment, will be described in detail. In addition, the belt conveyor device 250
The belt conveyor device 94 in the element supply step (see FIG. 1 (D-1)) in the production system for the seedling culture medium described above,
Belt conveyor device 156 in the stirring and mixing process (see FIG. 1E), lower belt conveyor device 162 and upper belt conveyor device 16 in the compression molding process (see FIG. 1F)
4. The first belt conveyor device 212 and the second belt conveyor device 21 in the seedling raising medium accumulation step (see FIG. 1 (H)).
4 can be used.

As shown in FIGS. 5 and 6, the belt conveyor device 250 includes a pair of side plates 254 and 256 each made of lightweight channel steel. Each side plate 25
4 and 256 are a pair of mounts 25 arranged in parallel with each other.
8, 260 are fixed to the upper end portions by fixing bolts 262. A drive-side pulley shaft 264 and a driven-side pulley shaft 266 are rotatably supported by bearings 268 and 270 at both ends in the longitudinal direction of the pair of side plates 254 and 256.
The driving pulley shaft 264 is connected to driving means (not shown) including a motor, a gear box, and the like.

A driving pulley 2 is mounted on the driving pulley shaft 264.
The driven pulley 274 is fixed to the driven pulley shaft 266. A transport belt 276, which is an endless belt, is wound around the outer peripheral surfaces of the driving pulley 272 and the driven pulley 274.
Further, a belt tension screw 27 is attached to the driven pulley shaft 266.
A tension applying mechanism 280 for sliding the driven pulley shaft 266 in the longitudinal direction of the side plates 254 and 256 in accordance with the screwing stroke of No. 8 to apply a predetermined tension to the transport belt 276 is provided. Therefore, the side plates 254, 256
The driven-side pulley shaft insertion hole (not shown) formed in is formed as an elongated hole along the longitudinal direction of the side plates 254 and 256.

Here, in the present embodiment, of the pair of side plates 254, 256, the peripheral length of one side plate 254 is formed smaller than the peripheral length of the transport belt 276.
Therefore, the side plate 254 can pass through the inside of the transport belt 276.

On the other hand, a configuration described below is added to the other side plate 256 side. As shown in detail in FIG. 6, the other side plate 256 is connected to an upper surface of a gantry 260 supporting the other side plate 256 by a hinge 282 as a “hinge part”. Therefore, the other side plate 256 is
Is rotatable around the axis of the hinge 282 relative to the upper surface of the hinge. The connection configuration using the hinge 282 is used at a plurality of locations along the longitudinal direction of the other side plate 256.

From a predetermined position in the longitudinal direction of the gantry 260, a pair of columns 284 as "support members" made of lightweight channel steel are provided upright. Each strut 284
Is fixed to the side surface of the gantry 260 by welding. The upper end of each column 284 is located beyond the upper flange 256A of the other side plate 256, and is fixed to the upper surface of the upper flange 256A of the other side plate 256.
Are respectively opposed to a pair of blocks 286. A bolt insertion hole 288 is formed at the bottom of the column 282, and the block 286 has the bolt insertion hole 288.
A bolt screw hole 290 is formed coaxially with the bolt hole 290. Note that the inner diameter of the bolt insertion hole 288 is
Is set slightly larger than the inner diameter of. These bolt insertion holes 288 and bolt screw holes 290 are connected to the support columns 28.
A tension bolt 292 is screwed in from the fourth side. Since the shaft diameter of the tension bolt 292 is the same as that of the bolt screw hole 290, the tension bolt 292 is loosely fitted into the bolt insertion hole 288.

The column 284, the block 286, and the tension bolt 292 in the above configuration correspond to "lifting means" in the present invention.

Next, the operation and effect of this embodiment will be described.

First, an overall flow of the system for producing a seedling culture medium according to the present embodiment will be outlined. FIG. 1 (A)
In the rice husk supply step shown in FIG. 2, the rice husk group 26 mixed with waste rice after the hulling process is carried by a belt conveyor device or a forklift and the rice hull group supply port 2 of the rice husk supply device 20.
4. Then, when the screw conveyor 28 of the rice hull supply device 20 is driven, the waste rice husk group 26 accommodated in the device main body 22 is removed by the screw conveyor 2.
After being conveyed in the direction of the arrow by 8, it is discharged from the rice husk group discharge port 32 of the fryer cylinder 30 by a fryer such as a slower (not shown). In the present process, what is referred to as "rice-mixed rice hulls" is that a group of rice husks is generated at the stage of the rice-hulling processing by the rice hulling machine, and a small amount of rice husk 5
4 (described below) is included, so as to be distinguished from the rice hulls group 62 from which waste rice has been removed as described below.

Next, in the waste rice separation step shown in FIG. 1B, the waste rice mixed rice hulls 26 are supplied into the supply hopper 42 of the waste rice separation device 40. The supplied rice husk-mixed rice hulls group 26 is fed out by a predetermined amount by a feed-out valve 44, and then is sorted by a sorting unit 46 (wind sorting process).
Is done. Specifically, the waste rice husks group 26 fed from the feed valve 44 first falls on the upper inclined plate 48, flows down as it is, and then falls on the lower inclined plate 50 disposed therebelow. You. At this time, the rice husks having a lower specific gravity are sucked into the wind selection duct 58 by the suction force of the suction fan 60 (the flow is indicated by solid arrows in the drawing), and the scrap rice 54 having a higher specific gravity than the rice hulls is not sucked. It falls on the lower inclined plate 50 and flows down as it is (indicated by a broken line arrow in the figure), and is discharged from the waste rice discharge port 52 and the waste rice storage box 5
6. Thereby, the waste rice 54 is separated from the waste rice-mixed rice hull group 26, and only the rice hull group 62 is sorted and discharged from the discharge port 60A of the suction fan 60.

Next, the rice hull group 62 is supplied into the supply hopper 72 of the rice husk crusher 70 by the rice husk crushing step shown in FIG. The supplied chaff hulls 62 are fed out by a predetermined amount by a feeding valve 74 and then pulverized in a pulverization processing unit 76. Specifically, the crushing drum 78 arranged in the crushing processing unit 76 is
The rotation of the rice hulls 62 is caused to rotate around the axis by receiving the driving force from the crushing drum 78, whereby the rice hulls 62 are ground and crushed into small pieces. The crushed rice hulls group 12 that has been crushed,
The crushed rice husks are discharged from the crushed rice husk group outlet 82 of the crushing processing unit 76.

Next, FIGS. 1 (D-1) to 1 (D-3)
In the element group quantitative supply step shown in (2), each element is supplied at a predetermined timing into the element supply port 144 of the stirring and mixing device 140 used in the next step.

Specifically, in the element supply step shown in FIG. 1D-1, the first supply valve 104 of the first supply section 96 of the element supply device 90 and the second supply valve of the second supply section 98 are provided. 110, third delivery valve 1 of third supply unit 100
14 are operated at a predetermined timing and at a predetermined feeding speed. As a result, a predetermined amount of the binder 14 is dropped from the first supply unit 96 onto the transport belt 92, and
From the supply unit 98, a predetermined amount of the surfactant 108 is dropped onto the conveyor belt 92, and from the third supply unit 100, a predetermined amount of other elements 116 is dropped onto the conveyor belt 92.
The binder 14, surfactant 108, and other components 116 dropped on the conveyor belt 92 are transferred to a belt conveyor device 94.
And supplied into the element supply port 144 of the stirring and mixing device 140 used in the next step (that is, constant-rate supply).
Is done.

In the step of supplying the crushed chaff group shown in FIG. 1 (D-2), the crushed chaff group 12 formed in the preceding step is provided.
Is supplied into the supply hopper 122 of the crushed rice husk group supply device 120. The supplied crushed rice hulls group 12 is conveyed in the direction of the arrow by a screw conveyor 126 driven at a predetermined timing, and is discharged from the crushed rice hulls group outlet 128. The discharged crushed rice hulls group 12 is supplied into the element supply port 144 of the stirring / mixing device 140 used in the next step (that is, constant supply).

Further, in the liquid fertilizer etc. supplying step shown in FIG. 1 (D-3), the pump 136 of the liquid fertilizer etc. spray supplying device 130 is driven at a predetermined timing, so that the liquid fertilizer stored in the storage tank 132 is removed. A mixed solution 134 of the PH adjuster / germination inhibitor remover is pumped by a predetermined amount. The pumped mixed solution 134 is sprayed (ie, metered supply) into the element supply port 144 of the stirring and mixing device 140 used in the next step.

Next, each element is supplied into the element supply port 144 of the stirring and mixing device 140 by the stirring and mixing step shown in FIG. The supplied elements are stirred and mixed by rotating the stirring blades 146 at a predetermined rotation speed for a predetermined time in the stirring and mixing tank 142. As a result, a seedling culture soil 148 including the crushed rice hull group 12, the binder 14, and the element group 16 is formed. The seedling cultivation soil 148 formed as described above is discharged from the soil cultivation discharge port 150 by opening the lid 152 provided at the lower end of the stirring and mixing tank 142. The discharged seedling cultivation soil 148 falls on the conveyor belt 154 of the belt conveyor device 156, and the belt conveyor device 15
6 is driven to be conveyed in the direction of the arrow.

Next, in the compression molding step shown in FIG. 1 (F), the seedling culture 148 conveyed by the belt conveyor 156 is leveled and compression molded. More specifically, the seedling raising soil 148 is supplied into the soil feeding hopper 170 provided in the compression molding device 160. The supplied seedling culture medium 148 is supplied to the feeding valve 17.
After being fed out by a predetermined amount by 2, it is dropped on the transport belt 166 of the lower belt conveyor device 162. The seedling cultivation soil 148 dropped on the conveyor belt 166 is conveyed at a predetermined speed in the direction of the arrow by driving the lower belt conveyor device 162, and a pair of the cultivation soil 148 disposed adjacent to the cultivation supply hopper 170 during that time Equalizing screw 1
It is leveled in the axial direction (the width direction of the transport belt 166) by 74 and 176.

The seedling culture soil 148 equalized by the equalizing screws 174 and 176 is placed between the upper belt of the conveyor belt 166 of the lower belt conveyor device 162 and the lower belt of the conveyor belt 168 of the upper belt conveyor device 164. It is fed in and is conveyed in the direction of the arrow while being sandwiched between the two conveyor belts 166 and 168. At this time,
Seedling cultivation 1 by a pair of heat compression plates 178 and 180
48 is heat compression molded. The heating temperature at this time is such that the sheath 14B of the binder 14 is softened, but the core 1
4A is a predetermined temperature that does not soften. The degree of pressurization is set so that the thickness of the seedling raising soil 148 that has been equalized by the equalizing screws 174 and 176 is about half. As described above, the heating and compression plates 178, 1
When the seedling cultivation soil 148 is heated and compressed by 80, the sheath 14B of the binder 14 is softened and partially welded to each other to form a fine mesh and become entangled with the crushed rice hull group 12 and the like.

The heat-compressed seedling cultivation soil 148 is then cooled and compression-molded by a pair of cooling compression plates 182 and 184. As a result, the sheath 14B of the binder 14 which has been softened and welded is immediately cooled, and the crushed rice hulls 12
It is cured while being entangled with the like. As a result, it is possible to obtain a continuous long mat-shaped molding medium 10 having the characteristics of not being easily broken or broken, being inexpensive and being easy to handle.
It is discharged from a molding medium discharge port 186 provided on the downstream side in the transport direction between the belt 4 and the lower belt conveyor device 162.

Next, in the forming medium cutting step shown in FIG. 1 (G), the forming medium 185 is inserted from the mat insertion port 194 of the mat cutting device 190. The inserted continuous mat medium 185 is cut (fixed cut) at a predetermined size by moving the movable blade 200 toward the fixed blade 198 at a predetermined timing. As a result, the medium 10 for raising seedlings, which is a product, is formed and discharged from the mat discharge port 196 of the mat cutting device 190.

Next, a predetermined number of seedling culture media 10 are accumulated in the seedling culture medium (molded mat) accumulation step shown in FIG. 1 (H). Specifically, when the seedling culture medium 10 is discharged from the mat discharge port 196 of the mat cutting device 190, first, the mat accumulating device 21 disposed immediately below the mat collecting device 21 is disposed.
0 conveyor belt 216 of the first belt conveyor device 212
The seedling culture medium 10 is dropped thereon. Nursery medium 10
Are transported in the direction of the arrow by the first belt conveyor device 212 and are stacked on the transport belt 218 of the second belt conveyor device 214. When ten sheets of the seedling culture medium 10 are accumulated, the second belt conveyor device 214 is driven and transported in the direction of the arrow. In addition, the seedling-growing medium 1 in an accumulated state transported by the second belt conveyor device 214.
Nos. 0 are sequentially packed in a packing cardboard box or the like prepared in advance and shipped.

When the seedling culture medium 10 produced as described above is used, as shown in FIG. 4, the seedling culture medium 10 is spread in a seedling box 18 and irrigated to produce crops such as paddy rice. Seedlings 230 are sown, covered with soil 232, and irrigated and temperature-controlled daily to grow the seedlings.

Here, the above-described belt conveyor device 94 in the element supply process and the belt conveyor device 1 in the stirring and mixing process are described.
56, the lower belt conveyor device 162 and the upper belt conveyor device 164 of the compression molding process, and the first belt conveyor device 212 and the second belt conveyor device 214 of the seedling culture medium accumulating process, the belt conveyor device 250 according to the present embodiment. However, when used for a long period of time, the transport belt 276 of the belt conveyor device 250 may be worn due to abrasion or the like. In this case, the transport belt 276 is replaced using the transport belt replacement device 252 in the following manner.

First, the fixing bolt 26 of one side plate 254
2 is removed. Next, the belt tension screw 278 is loosened, and the tension applied to the transport belt 276 is removed.

Next, the tension bolt 292 is rotated in the screwing direction. When the tension bolt 292 is rotated, no fastening force acts on the bolt insertion hole 288, and the fastening force acts only on the bolt insertion hole 288 of the block 286. Therefore,
When the tension bolt 292 is rotated, the block 286 is drawn toward the column 284. This allows
The other side plate 256 and, consequently, the belt conveyor device 250 are rotated around the hinge 282 from the position shown by the solid line in FIG. As a result, the belt conveyor device 2
The gantry 2 on which one of the side plates 254 supports 50
It rises from 58. That is, when the tension bolt 292 is rotated in the screwing direction, the entire belt conveyor device 250 can be tilted around the hinge 282. Thereafter, the transport belt 276 is pulled out to one side plate portion 254 side.

When the transport belt is removed from the drive belt 276, a new transport belt for replacement is wound around the pair of driving pulleys 272 and driven pulleys 266. Thereafter, the entire belt conveyor device 250 is rotated around the hinge 282 while rotating the tension bolt 292 in the anti-screw direction, and the one side plate 254 is placed on the upper surface of the gantry 258 again. Thereafter, the belt tension screw 278 is rotated to apply a predetermined tension to the transport belt after replacement. And finally, the lower flange of one side plate 254 is
Is fixed to the upper surface of the device by fixing bolts 262.

As described above, in this embodiment, one side plate 254 of the belt conveyor device 250 is formed to have a size capable of extracting the conveyor belt 276, and the other side plate 256 is formed by using the hinge 282 on the upper surface of the gantry 260. And the other side plate 256 is rotated around the hinge 282 by rotating the tension bolt 292 so that the one side plate 254 is lifted off the gantry 258. Therefore, the conveyor belt of the belt conveyor device 250 is used. 276 can be easily replaced. Therefore, unlike the related art, there is no need to perform an operation of turning the entire belt conveyor device upside down and an operation of removing one side plate portion. As a result, according to the present embodiment, the transport belt 276
Can reduce the labor required for replacing the.

Further, according to the present embodiment, the hinge 282, the support 284, and the block 28 are provided on the other side plate 256 side.
6. Since lifting means such as tension bolts 292 are provided, there is no need to install a conveyor belt exchange device independently of the belt conveyor device. Therefore, the installation space can be reduced and the equipment cost can be reduced.

Further, according to the present embodiment, when the tension bolt 292 is relatively screwed into the bolt screw hole 290, the tension bolt 292 is inserted into the bolt insertion hole 288 of the column 284. Without moving in the axial direction,
The block 286 is drawn toward the column 284 by a stroke corresponding to the number of rotations of the bolt, and the belt conveyor device 25
Since the configuration is such that 0 is inclined, the belt conveyor device 250 can be inclined with a simple configuration.

In the present embodiment, the other side plate 256
A block 286 having a bolt screw hole 290 formed therein is attached thereto, and a column 284 is erected on the gantry 260 so that the block 286 is pulled in by a tension bolt 292, that is, a tensile force is applied to the other side plate 256. However, the present invention is not limited to this. By applying a predetermined external force to the other side plate 256, the other side plate 256
Any configuration is possible as long as it can be rotated two turns so that one side plate 254 can be lifted off the gantry 258.

For example, the column 284 and the block 286 may be connected by a hydraulic cylinder, and the hydraulic cylinder may be expanded and contracted by the driving force of a motor to pull the block 286, or a winch may be provided below the column 284. The wire of the winch is wound around a pulley provided at an appropriate position on the column 284, and the tip of the wire is further attached to the block 286 or the upper flange 256 of the other side plate 256.
It is also possible to adopt a configuration that locks on A.

Further, in this embodiment, the hinge 282 is used as the hinge, but the present invention is not limited to this.
Any hinge configuration that can rotatably connect the base 6 and the gantry 260 is applicable.

Further, in this embodiment, the channel steel is used as the side plate portion, but the concept of the side plate portion includes various members other than the channel steel.

Further, in the present embodiment, the case where the belt conveyor device 250 is used in the system for producing a culture medium for raising seedlings has been described as an example. However, the present invention is not limited to this, but can be applied to a wide range. Applicable.

[0071]

As described above, in the belt conveyor device according to the first aspect of the present invention, one of the side plate portions is formed to have a size capable of extracting the conveyor belt, and the other side plate portion is formed on the other side plate portion side. A hinge portion rotatably connecting the other side plate portion to the gantry, and a predetermined external force applied to the other side plate portion to rotate the other side plate portion around the hinge portion to thereby allow one side plate to rotate. And lifting means for lifting the part from the gantry eliminates the need for the conventional operation of turning over (inverting) the entire belt conveyor device and the operation of removing one of the side plate parts. It has an excellent effect of reducing the labor for replacing the belt.

Further, according to the belt conveyor device of the present invention, there is no need to install a transfer belt replacement device independently of the belt conveyor device, so that the installation space can be reduced and the equipment cost can be reduced. An excellent effect that reduction can be achieved is also obtained.

According to a second aspect of the present invention, in the belt conveyor device according to the first aspect, an external force fixed to the other side plate and having a bolt screw hole formed in the belt width direction as the axial direction. A receiving member, a supporting member fixed to a gantry supporting the other side plate portion and having a bolt insertion hole formed coaxially with the bolt screw hole, and a distal end side which is inserted into the bolt inserting hole of the supporting member and is inserted. And a tension bolt that is screwed into the bolt screw hole and rotated around the axis to pull the external force receiving portion toward the support member, and the lifting means described above is configured, so that the belt conveyor device can be configured with a simple configuration. It has an excellent effect that it can be inclined.

[Brief description of the drawings]

FIG. 1 is an overall process diagram of a system for producing a seedling culture medium according to an embodiment.

FIG. 2 is an external perspective view of a seedling culture medium manufactured by the seedling culture medium manufacturing system according to the embodiment.

FIG. 3 is a schematic diagram showing a state of a binder (core-sheath type fiber) after compression molding.

FIG. 4 is a cross-sectional view showing a use state of the seedling culture medium manufactured by the seedling culture medium manufacturing system according to the present embodiment.

FIG. 5 is a perspective view showing the overall configuration of the belt conveyor device according to the embodiment.

FIG. 6 is a side view showing the belt conveyor device shown in FIG. 5 with a part cut away.

FIG. 7 is a perspective view showing an overall configuration of a belt conveyor device according to a conventional example.

FIG. 8 is a process diagram showing a transfer belt replacement process in the case of a conventional example.

[Explanation of symbols]

 250 Belt conveyor device 254 One side plate 256 The other side plate 258 Stand 260 Stand 272 Drive pulley 274 Follower pulley 276 Conveyor belt 282 Hinge (hinge part) 284 Post (support member, lifting means) 286 Block (external force receiving part, lifting) Means) 288 Bolt insertion hole 290 Bolt screw hole 292 Tension bolt (lifting means)

Claims (2)

[Claims] 1. A pair of side plates arranged substantially in parallel and removably fixed to a frame, and a pair of side plates spaced apart in the longitudinal direction of the side plates and supported by the pair of side plates, respectively. A belt conveyor device including a pulley and a conveyor belt wound around the pair of pulleys, wherein one side plate portion is formed in a size capable of extracting the conveyor belt, On the other side plate portion side, a hinge portion for rotatably connecting the other side plate portion to the gantry, and a hinge portion connecting the other side plate portion by applying a predetermined external force to the other side plate portion. And a lifting means for rotating the one side plate portion from the gantry by rotating the belt member around the belt. 2. An external force receiving portion fixed to the other side plate portion and formed with a bolt screw hole having a belt width direction as an axial direction, and a mount supporting the other side plate portion. A supporting member fixed and having a bolt insertion hole formed coaxially with the bolt screw hole; a support member inserted into the bolt insertion hole of the support member, and a distal end side screwed into the bolt screw hole, and around the axis; The belt conveyor device according to claim 1, further comprising: a tension bolt that pulls the external force receiving portion toward the support member by rotating the belt.