JP2002247903A - Compost application vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a compost application vehicle with which clogging of compost can be prevented in each part of a hose for scattering compost from a tank for storing compost. SOLUTION: This compost application vehicle is equipped with the tank 2 which is loaded on a vehicle 1 and stores the compost 3, a screw 7 which is arranged on the bottom in the tank 2 and transports the compost 3 to a tank exit 6, a rotary valve 15 which is attached to the tank exit 6 and discharges the compost while screening air in the inside and the outside of the tank 2, a compressed-air route 25 for feeding the compost 3 discharged from the rotary valve 15 under pressure by aerodynamic force, a blower 32 installed at the upstream side of the compressed-air route 25 and the hose 36 which is connected to the downstream side of the compressed-air route 25 and guides the compost 3 to a fixed position, s stirring mechanism 26 for collapsing a bridge of the compost 3 caused in the tank 2 is positioned above the screw 7 in the tank 2.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a compost dispersing vehicle capable of preventing compost from being clogged in each part of a hose for dispersing compost from a tank for storing compost.

[0002]

2. Description of the Related Art As a compost dispersing vehicle, a tank mounted on a vehicle for storing compost, a screw disposed at the bottom of the tank to transfer the compost to a tank outlet, and an air shield between the inside and outside of the tank provided at the tank outlet are provided. A rotary valve for discharging compost while pneumatically feeding a compost discharged from the rotary valve, a blower provided on the upstream side of the pneumatic passage, and a compost connected to the downstream side of the pneumatic passage for desired compost. And a spray hose that guides the user to a location (Japanese Patent Laid-Open No. 2000-209913).

[0003] In this compost dispersing vehicle, compost discharged from a tank into a compressed air passage by a screw and a rotary valve is pressure-fed by a pneumatic force of a blower, and is dispersed to a desired place through a dispersing hose. At this time, since the rotary valve for shutting off the air between the tank and the compressed air passage is provided, the air flow (air force) in the compressed air passage does not act in the tank. Therefore, the tank does not need to have a pressurized structure, and the compost can be sprayed smoothly until there is no more compost in the tank, regardless of the remaining amount of compost in the tank.

[0004]

By the way, in the above-mentioned compost dispersing vehicle, since the air force of the blower does not act in the tank as described above, the compost in the tank is not stirred by the air flow. For this reason, the compost above the screw in the tank may cause a bridging phenomenon, and the compost may not be able to be transported to the tank outlet by the screw. As described above, when the compost is clogged in the tank due to the bridge phenomenon, it is impossible to disperse the compost even though the compost remains in the tank.

In the case where compost is clogged for some reason in the spray hose connected to the downstream side of the compressed air passage, and it becomes temporarily difficult to blow out the clogged compost with the air power of the blower. Can occur. In this case, if the operation of the screw and the rotary valve is continued, new compost is supplied one after another into the once-dispersed spray hose, so that the compost clogs are laminated, and the clogging can be eliminated by the air power of the blower. It becomes increasingly difficult, and the clogging is not eliminated at all.

Further, between the outlet on the downstream side of the compressed air passage and the spraying hose, a joint coupling for detachably connecting them is actually provided.
If the inner diameter of the joint coupling is smaller than the inner diameter of the spray hose, compost may be clogged at that portion.

An object of the present invention, which has been made in view of the above circumstances, is to provide a compost dispersing vehicle which can prevent clogging of compost in each part of a hose for dispersing compost from a tank for storing compost.

[0008]

According to a first aspect of the present invention, there is provided a tank mounted on a vehicle for storing compost,
A screw disposed at the bottom of the tank to transfer compost to the tank outlet, a rotary valve provided at the tank outlet and discharging the compost while shutting off the air inside and outside the tank,
A pneumatic passage for pneumatically feeding the compost discharged from the rotary valve, a blower provided upstream of the pneumatic passage, and a hose connected to the downstream of the pneumatic passage for guiding the compost to a desired location And a stirring mechanism for disposing a compost bridge formed in the tank is disposed in the tank above the screw and provided with a stirring mechanism.

A second invention is directed to a tank mounted on a vehicle for storing compost, a screw disposed at the bottom of the tank for transferring compost to a tank outlet, and a screw provided at the tank outlet for controlling the inside and outside of the tank. A rotary valve for discharging compost while shutting off air, a compressed air passage for pumping the compost discharged from the rotary valve by pneumatic force, a blower provided on the upstream side of the compressed air passage, and a downstream side of the compressed air passage. A compost dispersing vehicle having a hose connected to guide the compost to a desired location, wherein a pressure sensor for detecting air pressure in the passage is provided in a pressurized passage between the blower and the rotary valve, the pressure sensor comprising: Is provided with a control unit that stops the rotary valve and the screw while operating the blower when detecting a set pressure or more.

A third aspect of the present invention is directed to a tank mounted on a vehicle for storing compost, a screw disposed at the bottom of the tank for transferring compost to a tank outlet, and a screw provided at the tank outlet for controlling the inside and outside of the tank. A rotary valve for discharging compost while shutting off air, a compressed air passage for pumping the compost discharged from the rotary valve by pneumatic force, a blower provided on the upstream side of the compressed air passage, and a downstream side of the compressed air passage. A compost dispersing vehicle having a hose connected to guide the compost to a desired location, wherein a joint coupling is interposed between the outlet on the downstream side of the compressed air passage and the hose, and the joint coupling A cylindrical coupling portion detachably attached to an outlet on the downstream side of the compressed air passage; a cylindrical flange portion connected to the coupling portion; Is connected to the part and a hose connection portion of the inner cylindrical body shape hose periphery is mounted, in which the inner diameter of the flange portion is set to more than the inner diameter of at least the hose.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described with reference to the accompanying drawings.

As shown in FIGS. 1 to 4, a vehicle 1 includes:
A tank 2 for storing compost is mounted. The compost 3 stored in the tank 2 is, for example, a powdery one or the like. The tank 2 includes a pair of inclined plates 4, 4 arranged so as to be narrower downward, and a triangular plate 5 provided to cover the front and rear of these inclined plates 4, 4.
And 5. At the bottom in the tank 2, a spraying screw 7 for transferring the compost 3 in the tank 2 to a tank outlet 6 formed at the bottom of the rear triangular plate 5 is arranged.

A screw 7 is rotatably supported on the bottom of the tank 2 so as to be rotatable in the front-rear direction, a helical blade member 9 attached to the rotary shaft 8, and rotationally drives the rotary shaft 8. The motor 1 provided on the rear triangular plate 5
0 (hydraulic motor). According to this configuration, if the rotating shaft 8 is rotated in a predetermined direction by the motor 10, the compost 3 in the tank 2 is screw-fed by the blade member 9,
It is transferred toward the tank outlet 6.

A discharge tube 13 is attached to the tank outlet 6. The discharge cylinder 13 has a lid 11 at its rear end and a discharge port 12 below. The rotary shaft 8 penetrates through the discharge cylinder 13 and is supported by the lid 11 at the rear end. On the rotating shaft 8 in the discharge tube 13, plate-like paddles 14 arranged at intervals of 180 degrees are attached. Paddle 14
Is for scraping the compost 3 transferred into the discharge cylinder 13 through the tank outlet 6 to the lower discharge port 12.

The outlet 12 has a rotary valve 15 for discharging the compost 3 while shutting off the air inside and outside the tank 2.
Is provided. The rotary valve 15 has a casing 16 formed of a cylindrical body placed horizontally along the vehicle width direction. The casing 16 has a connection port 17 connected to the discharge port 12 at an upper part thereof, and a lid part 18 at left and right ends. A rotor 19 is rotatably accommodated in the casing 16.

The rotor 19 includes a rotating shaft 20 which is supported through the right and left lids 18, 18, and a plurality (eight in the illustrated example) of paddles 2 radially mounted on the rotating shaft 20.
And 1. The rotating shaft 20 has a motor 2 for rotational drive.
2 (hydraulic motor) are connected. Left and right lids 18,
An inlet 23 and an outlet 24 are formed below 18. The inlet 23 and the outlet 24 have a compressed air passage 25 for discharging a part of the compost 3 in the valve 15 by pneumatic force,
25 are connected.

According to the rotary valve 15, the compost 3 supplied from the connection port 17 with the rotation of the rotor 19 is sequentially transferred downward by the paddle 21, and
The compost 3 between the paddles 21 and 21 at the outlet 3 and the outlet 24 is discharged from the casing 16 by the pneumatic force of the air passage 25. At this time, each paddle 21 is
Since the air is shut off between the connection port 17 side and the inlet 23 and the outlet 24 side of 6, the compressed air flowing through the compressed air passage 25 does not enter the tank 2.

For this reason, the tank 2 does not need to have a pressurized structure, and theoretically, regardless of the remaining amount of the compost 3 in the tank 2, the compost 3 is kept until the compost 3 in the tank 2 runs out. Can be sprayed smoothly. However, since the compost 3 in the tank 2 is not stirred by the airflow, the compost 3 above the spraying screw 7 actually causes a bridging phenomenon in the tank 2, and the compost 3 cannot be transferred to the tank outlet 6 by the screw 7. The possibility was pointed out. As described above, when the compost 3 is clogged in the tank 2 due to the bridge phenomenon, it is impossible to spray the compost 3 even though the compost 3 remains in the tank 2.

Therefore, in the present embodiment, a stirring mechanism 26 for disintegrating the bridge of the compost 3 generated in the tank 2 is provided in the tank 2 above the screw 7. The stirring mechanism 26 is disposed in the tank 2 along the front-rear direction, and is supported by the front and rear triangular plates 5, 5.
7, an L-shaped stirring rod 28 attached to the rotating shaft 27 at predetermined intervals in the axial direction, and a motor 29 (hydraulic motor) for driving the rotating shaft 27.

The stirring rod 28 is also attached at a predetermined interval in the circumferential direction of the rotating shaft 27. Stirring rod 2
The circumferential and axial intervals of 8 are appropriately changed according to the properties of the compost 3 (such as the ease with which a bridge is formed). Also,
Due to the characteristics of the spray screw 7, the compost 3 in the tank 2 is discharged from the front side of the vehicle 1 and thus tends to remain on the rear side, and a bridge is easily formed on the rear side. The stirrer rod 28 may be attached only to the portion (behind the middle point of the length).

The agitating mechanism 26 is normally stopped, and when the worker of the compost spraying is holding the spraying hose 36 described later and spraying the compost inside the greenhouse or the like, the tip of the hose 36 is turned off. When the compost 3 is no longer sprayed, the operator operates the operation panel such as a radio control and a remote control to carry out the remote control as appropriate.
In addition, the stirring mechanism 26 may be arranged not only one but also two or more plural ones above the screw 7.

In FIGS. 3 and 4, the compressed air passage 25 includes a downstream compressed air passage tube 30 connected to the outlet 24 of the rotary valve 15 and an upstream compressed air passage tube connected to the inlet 23 of the rotary valve 15. 31. The upstream side compressed air passage pipe 31 has a blower 3 for generating compressed air.
2 are provided. The blower 32 is driven by a motor 33 (hydraulic motor). The downstream-side compressed air passage pipe 30 and the upstream-side compressed air passage pipe 31 are connected by a secondary air pipe 34 that bypasses the rotary valve 15.

The secondary air pipe 34 is connected to the rotary valve 15
To the compost 3 discharged from the outlet 24 of the
This is to improve the mixing of the air and the compost 3 and to increase the pumping force of the compost 3. Further, a spray hose 36 for guiding the compost to a desired location is connected to the downstream side compressed air passage pipe 30 via a joint coupling 35.
An operator holds the tip of the spraying hose 36, and spreads compost in a greenhouse or the like.

By the way, in the spray hose 36, the compost 3
May be clogged for some reason, and it may be temporarily difficult to eject the clogged compost 3 with the air force of the blower 32. In this case, when the operation of the screw 7 and the rotary valve 15 is continued, the new compost 3 is supplied one after another into the spray hose 36 once clogged, so that the clogging of the compost 3 is laminated, and the clogging is removed by the air of the blower 32. It becomes increasingly difficult to solve the problem by force, which causes a situation in which the jam cannot be eliminated at all.

Therefore, in this embodiment, as shown in FIG. 3, a pressure sensor 3 for detecting the air pressure in the upstream pressure air passage pipe 31 between the blower 32 and the rotary valve 15 is provided.
And a control unit 38 for stopping the rotary valve 15 and the screw 7 while operating the blower 32 when the pressure sensor 37 detects the set pressure or more. As a result, new compost 3 is not supplied one after another into the spray hose 36 once clogged, and the compost 3 in the spray hose 36 is not supplied.
Can be eliminated by the air force of the blower 32. FIG. 6 shows a control flow of the control unit 38.

As shown in the figure, in this control, as shown in step 1, the motor 33 of the blower 32, the motor 10 of the spraying screw 7, and the rotary valve 15
It is assumed that all the motors 22 are turned on. Next, at step 2, the pressure sensor 37 detects the air pressure P in the upstream side compressed air passage pipe 31 between the blower 32 and the rotary valve 15. Next, in step 3, a first set pressure P ₁ set in advance and P are compared. Then, if P is equal to or less than a predetermined first set pressure P ₁ (P ≦ P ₁ ),
It is determined that there is no blockage in the hose 36, and the process proceeds to step 4, where the operation of the motors 33, 10, and 22 is continued.
Here, P ₁ is the pressure when there is no blockage in the hose 36 obtained in advance through experiments or simulations, for example, 0.04
Set to MP.

On the other hand, when P is larger than the first set pressure P ₁ (P ≦ P ₁ is not satisfied), there is a possibility that the inside of the hose 36 is clogged. In step 5, a second set pressure P ₂ a predetermined and P are compared. Then, P is equal to or higher than the second set pressure P ₂ (P ≧ P
If it is ₂ ), it is determined that the inside of the hose 36 is clogged, and the procedure goes to step 6, where the motor 33 of the spray screw 7 and the motor 22 of the rotary valve 15 are both turned off while the motor 33 of the blower 32 is turned on. P ₂ is the set pressure at which the jam has occurred in the hose 36 obtained in advance through experimentation or simulation or the like, for example to 0.11MP.

As a result, the compost 3 is no longer supplied into the hose 36 once filled with the compost 3, and the hose 3
The compost 3 clogged in 6 can be eliminated by the compressed air supplied from the blower 32. That is, when the compressed air discharged from the blower 32 is blocked by the compost 3 clogged in the hose 36 and the pressure on the upstream side rises, and when the pressure rises to the clogging resistance of the compost 3 or more, it becomes clogged. The compost 3 is discharged. However, at this time, the pressure sensor 37 detects the operating pressure of the relief valve 39 (for example, 0.
2MP) or more, the relief valve 39 is opened to release the air in the upstream side air passage pipe 31 and the blower 32
To protect.

On the other hand, when P is smaller than the second set pressure P ₂ (when P ≧ P ₂ is not satisfied), it is determined that the inside of the hose 36 is not clogged, and the routine proceeds to step 4, where the motors 33, 10 and Operation 22 is continued. Thus, the clogging of the compost 3 in the spraying hose 36 is determined based on the detection value of the pressure sensor 37, and when it is determined that the compost 3 is clogged in the hose 36, the supply of the compost 3 is increased. Is stopped, the spraying screw 7 and the rotary valve 15 are stopped to prevent lamination of the compost clogging, and only the blower 32 is operated to discharge the clogging of the compost 3 in the hose 36 by pneumatic force. When it is determined that the compost 3 is not clogged in the hose 36, the blower 3
2. All the operations of the spraying screw 7 and the rotary valve 15 are continued, and the spraying of the compost 3 from the end of the hose 36 is continued.

It is determined in step 3 that P ≦ P1 and that there is no clogging in the hose 36, and the fact that the flow has proceeded to step 4 means that the worker holding the spray hose 36 and spraying the compost carries the compost. You may make it display on a board.
Accordingly, the operator recognizes that there is no clogging in the hose 36, and when the compost 3 is not discharged from the end of the hose 36 (the possibility that a bridge is formed in the tank 2 is high), the stirring mechanism is used. 26 can be operated, and the bridge in the tank 2 can be properly broken.

That is, when the compost 3 is not sprayed from the tip of the hose 36 as described above, the operator operates the operation panel to activate the agitation mechanism 26 so as to disconnect the bridge of the compost 3 in the tank 2. Compost 3 is hose 3
It is not known whether the cause of the dispersion from the hose 6 is clogging in the hose 36 or a bridge in the tank 2. Therefore, even in the case of clogging in the hose 36, the stirring mechanism 26 may be activated. Therefore, by displaying on the operation panel the fact that the user has proceeded to step 4, the operator can operate the stirring mechanism 26 only when the display is made, and the bridge in the tank 2 can be properly broken. Can be.

Incidentally, the clogging of the compost 3 is caused not only in the spray hose 36 but also in the downstream side compressed air passage pipe 3 shown in FIG.
It can also occur at the joint coupling 35 connecting the spray hose 36 to the spray hose 36. In particular, in a joint coupling 35 of a type in which an insertion portion is inserted into the inner diameter of a generally used hose 36, the passage area of the compost is reduced at the insertion portion, and thus clogging is likely to occur at that portion.
Therefore, in the present embodiment, the joint coupling 35 having the structure shown in FIG. 5 is used to suppress the clogging of the compost 3 in the coupling portion.

As shown, the joint coupling 35 has a cylindrical coupling portion 40 which is detachably attached to the outlet of the downstream-side compressed air passage pipe 30. The coupling portion 40 includes a cylindrical body 41 fitted to the outlet of the flow-side compressed air passage tube 30, a packing 42 (rubber or the like) provided on the inner peripheral surface of the cylindrical body 41, It has a holding claw 44 that engages with the concave portion 43 formed at the outlet, and an operation lever 45 that opens and closes the holding claw 44. A cylindrical flange portion 46 is attached to the coupling portion 40 by welding or the like.

The flange portion 46 includes a ring member 47 welded to the tube portion 41 of the coupling portion 40, and a screw tube member 4 integrally attached to the ring member 47 and having a screw on the outer peripheral surface.
8 A tubular hose connection portion 49 to which the spray hose 36 is mounted is attached to the inner periphery of the flange portion 46. The hose connecting portion 49 includes a screw ring 50 that is screwed to the outside of the screw tube 48 of the flange portion 46, and a tube 51 that has a screw that is welded to the screw ring 50 and has a screw to which the spray hose 36 is screwed on the inner periphery. Become. Spray hose 3
On the outer periphery of 6, a ridge for reinforcement or the like is formed in a screw shape, and this ridge is screwed to the inner peripheral surface of the cylindrical body 51.

The inner diameter of the screw cylinder 48 of the flange 46 is set equal to the inner diameter of the spray hose 36. The inner diameter of the ring body 47 of the flange portion 46 is equal to the inner diameter of the spray hose 36, and the straight portion 52
And a tapered portion 53 whose diameter is larger than the inner diameter of the spray hose 36. The inner diameter of the cylindrical body 41 of the coupling portion 40 is set according to the tapered portion 53. According to the joint coupling 35, since the passage cross-sectional area does not become smaller than the inner diameter of the spray hose 36, clogging of the compost 3 in the coupling portion can be suppressed.

FIG. 7 shows an outline of the hydraulic circuit of this embodiment.

As shown, the engine 54 includes a PT
First and second hydraulic pumps 56 and 57 via O-shaft 55
Is connected. The first hydraulic pump 56 is connected to a blower hydraulic motor 33 that drives the blower 32 via a pipe 58. By switching the switching valve 59, the blower hydraulic motor 33 is turned on and off. In addition, the second hydraulic pump 57 is connected in series to the rotary valve hydraulic motor 22 that drives the rotary valve 15 and the spray screw hydraulic motor 10 that drives the spray screw 7 via a pipe 60, It is connected to a stirring mechanism hydraulic motor 29 that drives the mechanism 26.

By switching the switching valve 61,
The hydraulic motor 22 for the rotary valve and the hydraulic motor 10 for the spray screw are integrally turned on and off, and the switching valve 6
By switching 2, hydraulic motor 29 for the stirring mechanism is turned on and off. That is, the hydraulic motor 22 for the rotary valve and the hydraulic motor 10 for the spraying screw are turned on / off in a set in terms of their functions (compost discharge function). Each switching valve 59, 61, 62
Is connected to the control unit 38 shown in FIG. 3, and is operated as shown in FIG. 6 described above in response to a command from the control unit.

In FIG. 7, the blower 32 is connected to the hydraulic motor 33 for the blower. The upstream side compressed air passage pipe 31 is connected to the blower 32. As shown in FIG. 3, the pressure sensor 3
7 (pressure switch) and a relief valve 39 are provided. These operations are as described above. The inlet 23 of the rotary valve 15 is connected to the distal end of the upstream side compressed air passage tube 31 as shown in FIG. The downstream side compressed air passage pipe 30 is connected to the outlet 24 of the rotary valve 15.

In FIG. 7, the upstream air passage pipe 31 and the downstream air passage pipe 30 are connected by a secondary air pipe 34 which bypasses the rotary valve 15 (FIG. 4).
reference). In addition, the outlet of the downstream side compressed air passage pipe 30 is
The spray hose 36 is connected via a joint coupling 35 shown in FIG. The spray hose 36 is connected to an extension spray hose 36 a via a joint 63. The extension spray hose 36a is connected between the cabin 64 of the vehicle 1 and the tank 2 as shown in FIG.
5 and housed.

[0041]

As described above, according to the compost disperser according to the present invention, clogging of compost can be eliminated and prevented in each part of the hose for dispersing compost from the tank for storing compost.

Specifically, according to the first aspect of the present invention, the clogging of the compost in the tank due to the bridge phenomenon can be eliminated, and according to the second aspect of the invention, the composting in the spraying hose can be eliminated. According to the third aspect of the present invention, clogging of the compost in the joint coupling can be prevented.

[Brief description of the drawings]

FIG. 1 is a partially broken left side view of a fertilizer application vehicle according to an embodiment of the present invention.

FIG. 2 is a rear view of the compost spreader.

FIG. 3 is a right side view of the compost spreader.

FIG. 4 is an enlarged partial cutaway view of a main part of FIG. 2;

FIG. 5 is a partially broken side view of the joint coupling.

FIG. 6 is a diagram showing a control flow in a control unit.

FIG. 7 is an explanatory diagram showing a hydraulic circuit of the compost spreader.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Vehicle 2 Tank 3 Compost 6 Tank outlet 7 Screw (spray screw) 15 Rotary valve 25 Compressed air passage 26 Stirring mechanism 32 Blower 35 Joint coupling 36 Hose (spray hose) 37 Pressure sensor 38 Control part 40 Coupling part 46 Flange part 49 Hose connection

 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Tatsuo Tomiyasu 25-9 Nishiyama, Iimura-cho, Toyohashi-shi, Aichi Prefecture Isuzu Motors Tokai Co., Ltd. Toyohashi Business Headquarters (72) Inventor Kunio Yamashiro 2 Sakaemachi, Sano-shi, Tochigi Prefecture New Meiwa F-term (reference) in OTEC Corporation 2B052 AA14 AA19 AA27

Claims (3)

[Claims] 1. A tank mounted on a vehicle for storing compost, a screw disposed at the bottom of the tank to transfer the compost to a tank outlet, and a compost provided at the tank outlet while shutting off air inside and outside the tank. A rotary valve for discharging, a compressed air passage for pneumatically feeding the compost discharged from the rotary valve, a blower provided on the upstream side of the compressed air passage, and a compost connected to the downstream side of the compressed air passage for desired composting. A compost dispersing vehicle equipped with a hose that guides to the location of the compost, wherein a stirring mechanism for disposing a compost bridge generated in the tank is provided in the tank, positioned above the screw. A compost spreader characterized by the following. 2. A tank mounted on a vehicle for storing compost, a screw disposed at the bottom of the tank to transfer the compost to a tank outlet, and a compost provided at the tank outlet while shutting off air inside and outside the tank. A rotary valve for discharging, a compressed air passage for pneumatically feeding the compost discharged from the rotary valve, a blower provided on the upstream side of the compressed air passage, and a compost connected to the downstream side of the compressed air passage for desired composting. A fertilizer spreader equipped with a hose that guides to a place, and a pressure sensor that detects air pressure in the passage is provided in a compressed air passage between the blower and the rotary valve,
A compost dispersing vehicle comprising a control unit for stopping the rotary valve and the screw while operating the blower when the pressure sensor detects a set pressure or more. 3. A tank mounted on a vehicle for storing compost, a screw disposed at the bottom of the tank to transfer the compost to a tank outlet, and a compost provided at the tank outlet while shutting off air inside and outside the tank. A rotary valve for discharging, a compressed air passage for pumping the compost discharged from the rotary valve by pneumatic force, a blower provided on the upstream side of the compressed air passage, and a compost connected to the downstream side of the compressed air passage for desired composting. And a hose for guiding to a location of a compost, wherein a joint coupling is provided between the outlet on the downstream side of the compressed air passage and the hose, and the joint coupling is connected to the compressed air passage. A cylindrical coupling portion detachably attached to the downstream outlet, a cylindrical flange portion connected to the coupling portion, and a cylindrical flange portion connected to the flange portion; A compost disperser, comprising: a cylindrical hose connection portion around which a hose is mounted; and wherein the inner diameter of the flange portion is set to be at least equal to the inner diameter of the hose.