JP3516898B2 - Fertilizer - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention has a hopper for storing powdered and granular fertilizer, and at the lower end of the hopper, there is provided a feeding mechanism in which a feeding roll rotatably driven around a horizontal axis is supported by a feeding case. The fertilizer delivered from the mechanism,
The present invention relates to a fertilizer application device configured to convey a wind force to a predetermined fertilizer application site by means of a carrier air supplied from a blower device.

[0002]

2. Description of the Related Art The above-mentioned fertilizer application apparatus was developed for use in a rice transplanter for riding.
As disclosed in Japanese Patent Publication No. 313519, the fertilizer mounted on the traveling machine body is located between the driver's seat and the seedling planting device, and the fertilizer transported by wind is supplied to the fertilizer application site of the seedling planting device through a hose. It is configured.

[0003]

Since the weight of the fertilizer application apparatus is supported by the traveling machine body, the weight balance of the machine body is good and the fertilizer can be replenished from the driver's seat. , Which has become widespread in recent years, since the hopper that stores fertilizer is located between the driver's seat and the seedling stand of the seedling planting equipment, the seedling stand is supplied from the driver's seat through the hopper. If the hopper is lowered to facilitate seedling replenishment, the fertilizer storage amount is reduced, and conversely, if the hopper height is increased to increase the fertilizer storage amount, it is difficult to replenish the seedlings. It was.

Further, in the above-mentioned fertilizer application, a part of the feeding case supporting the feeding roll is opened so that the inside of the case can be maintained. However, the feeding roll is supported between the left and right side walls of the feeding case. Since the structure is such that the maintenance is performed as it is, it is difficult to perform the cleaning work such as removing the fertilizer attached to the feeding concave portion of the feeding roll itself.

The present invention has been made paying attention to such a point, and it is possible to easily supply seedlings through the hopper while maintaining a relatively large amount of fertilizer storage, and to improve maintainability. The main purpose is to provide an excellent fertilizer application device.

[0006]

[Means for Solving the Problems] [Structure, Action and Effect of the Invention According to Claim 1]

(Structure) The fertilizer applicator according to the first aspect of the invention is a feeding mechanism in which a feeding roll, which is rotationally driven around the horizontal axis, is supported by a feeding case at the lower end of a hopper that stores powdered fertilizer. The fertilizer fed out from the feeding mechanism is configured to wind-transport the carrier air supplied from the air-blowing device to a predetermined fertilization site by a blower pipe . The feeding case is composed of an upper and lower two-part structure consisting of an upper case connected to the lower end of the hopper and a lower case separably connected to the lower part of the hopper.The lower case collects the fed fertilizer. It is provided with a funnel part for guiding the flow-down and an outlet pipe connected to the blower so as to supply the fed fertilizer collected in the funnel part to the outlet pipe, and the lower half part of the feeding roll is the lower part. As enters the funnel portion of the case, the feed roll deployed over said upper case and lower case, before
The air blower tube is composed of a hard tube part and a flexible rubber tube part.
At the same time, the outlet pipe is inserted and connected to the rubber pipe portion.
Characterized in that that.

(Operation) According to the above construction, the lower half of the pay-out roll is inserted into the funnel of the lower case.
Since the pay-out rolls are arranged between the upper case and the lower case, the flow-down angle of the funnel part can be tight and the flow of the pay-out fertilizer can be smoothly done. The distance to the pipe is short, and the height of the entire feeding case is low.
Therefore, since the feeding mechanism can be configured to be bulky, if the installation height of the outlet pipe located at the lower end of the feeding mechanism with respect to the machine body and the hopper upper end position with respect to the driver's seat are made constant, the feeding mechanism can be made bulky. The amount of fertilizer can be increased by increasing the height of the hopper.

Further, by separating the lower case from the upper case, it becomes possible to remove the pay-out roll from the pay-out case and perform cleaning or the like outside.

(Effect) Therefore, according to the invention of claim 1, it is possible to easily replenish the seedlings through the hopper while maintaining a relatively large amount of fertilizer storage, and it is also excellent in maintainability. became.

[Structure, Action and Effect of Invention According to Claim 2]

(Structure) The fertilizer applicator according to a second aspect of the present invention is the fertilizer applicator according to the first aspect of the present invention, in which the residual fertilizer discharge port is opened in the upper case of the feeding case and is located above the residual fertilizer discharge port. The eaves are projected on the outer surface of the upper case.

(Operation) According to the above construction, even if rainwater flows down along the outer surface of the feeding case, since it is guided outward by the eaves, it does not flow to the residual fertilizer discharge port.

(Effect) Therefore, according to the invention of claim 2, the above-mentioned effect of the invention of claim 1 is brought about, and the work can be performed well without being wet in the feeding mechanism even under bad conditions such as light rain. It can be performed.

[Structure, Action and Effect of the Invention According to Claim 3]

(Structure) In the fertilizer applicator of the invention according to claim 3, in the invention of claim 1 or 2, the outer peripheral surface of the hopper is provided with a rib for draining.

(Operation) According to the above construction, the rib projecting on the outer peripheral surface of the hopper is large in addition to the original draining function of preventing rainwater adhering to the outer surface of the hopper from flowing to the feeding mechanism. It also has the function of supplementing the strength of the hopper itself, which is a hollow body.

(Effect) Therefore, according to the invention of claim 3, in addition to the effect of the invention of claim 1 or 2, the hopper reinforced by the ribs exerts sufficient strength and increases the hopper capacity. Therefore, even if a large amount of fertilizer is stored, it will not be deformed and can be suitably used for a long time.

[Structure, Action and Effect of Invention According to Claim 4]

(Structure) The fertilizer application apparatus according to a fourth aspect of the present invention is the fertilizer application apparatus according to any one of the first to third aspects, wherein the delivery drive shaft that rotationally drives the delivery roll is an upper case of the delivery case. An operating handle for manual rotation, which is supported by the above-mentioned and is attached to and detached from one end of the feeding drive shaft, can be stored and mounted in a fixed frame for supporting the fertilizer application device.

(Operation) According to the above construction, when measuring the amount of delivery, the operation handle removed from the fixed frame is inserted and connected to the end of the delivery drive shaft,
Out Repetitive refused coordination with the drive means rotating the drive shaft manually. In addition, normally, by storing and mounting the operation handle removed from the feeding drive shaft in the fixed frame,
The feeding drive shaft is driven and rotated without swinging the operation handle. Further, since the feeding drive shaft is supported on the upper case side of the feeding case configured in the upper and lower two-divided structure, the lower case can be freely separated.

(Effect) Therefore, according to the invention of claim 4, in addition to the effect of any one of the inventions of claims 1 to 3, it is possible to easily carry out the feeding amount measuring operation, and it is easy to handle. It became a thing.

[Structure, Action and Effect of Invention of Claim 5]

(Structure) The fertilizer application apparatus according to a fifth aspect of the present invention is the fertilizer application apparatus according to any one of the first to fourth aspects, wherein the outside air intake port of the centrifugal fan that constitutes the blower is connected to the fan casing. It is formed so as to open upward on the outer surface, the outside air intake port is covered with an intake cover from above, and the outside air is taken in from a downward outside air intake port formed in the intake cover.

(Operation) According to the above-mentioned structure, the outside air, which is the fertilizer-carrying wind, is once sucked into the intake cover from the downward-facing outside air intake port, and then the outside air intake port opened upward to the outer surface of the fan casing. After that, the air is sucked into the casing, and an intake path having a bent labyrinth structure is formed.

(Effect) Therefore, according to the invention of claim 5, since the outside air is sucked through the intake path of the labyrinth structure opened downward, rainwater is prevented from being sucked in, and the centrifugal force is reduced. The intake noise of the fan and the drive noise are less likely to be transmitted to the outside through the curved intake path, which brings about the effect of the invention according to any one of claims 1 to 4 and is effective in performing quiet operation.

[0027]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 shows a riding-type rice transplanter of a six-row planting specification equipped with a fertilizer application apparatus according to the present invention. This rice transplanter is equipped with a lifting link 2 at the rear of a riding type traveling body 1.
The seedling planting device 3 for 6-row planting is connected to the machine through the so that the fertilizer application device 4 is mounted on the rear part of the traveling machine body 1 to form a basic structure.

An engine 5 is mounted on the front part of the traveling machine body 1, and its output is changed by a hydrostatic continuously variable transmission (HST) 6 capable of switching between forward and reverse movements, and the output of the change is a front mission case. Input to 7. The power input to the front mission case 7 is gear-shifted and then branched into a running system and a planting system, and a part of the running system power is transmitted to the left and right steering front wheels 8 equipped in the front mission case 7. At the same time, another part of the power of the traveling system is transmitted to the rear transmission case 10 via the main shaft 9 of the lower abdomen of the machine body and is transmitted to the left and right rear wheels 11 pivotally supported by the rear transmission case 10. Further, the planting system power taken out by the front mission case 7 is transmitted to the seedling planting device 3 via the work power take-out shaft 12 at the lower abdomen of the machine body and the transmission shaft 13 connected to the rear end thereof. Has become.

The seedling planting device 3 includes a feed case 14 which receives power from the transmission shaft 13, a seedling stand 15 which accommodates six rows of seedlings and horizontally reciprocates laterally with a constant stroke.
Three planting cases 16 arranged side by side in a rearward cantilever manner at the rear of the feed case 14, each planting case 1
It is equipped with a rotary type planting mechanism 17 for 6 rows mounted on the left and right of the rear end portion of 6, and three leveling floats 18 for leveling and flattening the planned planting points on the paddy field.
6 seedlings cut out from the lower end of 5 by each rotary type planting mechanism 17 are planted on the rice field prepared by each leveling float 18.

As shown in FIGS. 1 and 2, the fertilizer application device 4 includes a hopper 21 fixedly arranged at the rear of the driver's seat 19, and a feeding mechanism for feeding a predetermined amount of powdery and granular fertilizer stored in the hopper 21. 22 and 6 transfer hoses 24 for transferring the delivered fertilizer to the grooving device 23 provided in pairs on each leveling float 18, and this transfer hose 24
An air blower 25 using a centrifugal fan that sends the air to the group
Etc.

As shown in FIGS. 3 to 6, the feeding mechanism 22 is provided.
Are three roll members 26a, 2 having different widths in the axial direction.
Two sets of feeding rolls 26 formed by arranging 6b and 26c are arranged in parallel in one feeding case 27 to form a unit for two articles, and four feeding mechanisms 22 are connected to the lower end of the hopper 21. There is. Then, in this example of the 6-row planting specification, the feeding mechanisms 22 on both the left and right sides perform feeding for two rows, and the two machine-moving mechanisms 2 on the central side are provided.
2, the fertilizer supply to one of the feeding rolls 26 arranged in parallel is shut off by the detachable cover 28, and only one line is fed out. In addition, each roll member 26a which constitutes the pay-out roll 26,
Shutter plate 29 corresponding to each of 26b and 26c
Is provided, and by appropriately pushing and pulling the operation rod 29a to open and close these shutter plates 29 , it is possible to adjust the feed amount of fertilizer per one rotation of each feed roll 26.

As shown in FIG. 5, the two sets of feeding rolls 26 in each feeding mechanism 22 are rotatably supported on the lower portion of the feeding case 27 via a lateral rotation support shaft 30, and at the lower end portion of the case. Is an outlet pipe 3 that penetrates back and forth
A pair of left and right 1 is continuously provided corresponding to each payout roll 26. At the rear end of the outlet pipe 31, the transfer hose 2
4 is connected, and the front end of the outlet pipe 31 is inserted and connected to the blower pipe 32 that receives the blown air from the blower device 25, and the fertilizer fed by the feeding roll 26 and supplied to the outlet pipe 31. Is sent to the transfer hose 24 by the transfer wind introduced from the blower pipe 32, is supplied to the grooving device 23, and is embedded near the lateral side of the planted seedlings. In addition, in the two centering mechanisms 22 on the central side, the feeding rolls 26 that are in a feeding stop state.
The rear end of the outlet pipe 31 corresponding to is closed by a cap 33 to prevent the outflow of the transport air.

The feeding case 27 includes an upper case 27a which is internally fitted and connected to a lower end of the hopper 21, and an outlet pipe 31.
The upper case 27a and the lower case 2 are configured to have an upper and lower two-divided structure including a lower case 27b provided with
The axis of the pay-out roll 26 is located on the joint surface with 7b, the outlet pipe 31 is removed from the blower pipe 32, and the lower case 27b is separated downward from the upper case 27a.
The delivery roll 26 can be removed downward. The blower pipe 32 includes a hard rubber pipe portion 32a and a flexible rubber pipe portion 32b to which the front end portion of the outlet pipe 31 is inserted and connected.
And the rubber tube portion 32
The outlet pipe 31 can be easily separated by deforming b.

Here, the upper half of the upper case 27a is formed in a downwardly constricted shape in a front view so as to guide the fertilizer flowing down from the lower end opening of the hopper 21 to the left and right feeding rolls 26. A plurality of partition walls 34 that guide fertilizer to the roll members 26a, 26b, and 26c that form each delivery roll 26 are provided, and the shutter plate 29 is assembled between the partition walls 34 ,
It is bent and guided by a horizontally extending guide rod 35.

The upper half of the feeding roll 26 is placed under the upper case 27a, and the brush 3 for abrasion is slidably contacted with the outer periphery of the feeding roll 26.
6 is detachably fitted and mounted. Further, left and right pairs of left and right fertilizer discharge ports 37 are formed on the front side of the lower part of the upper case 27a, and are normally closed by a swing shutter 38 as shown in the figure, and after the work is finished, the swing shutter 38 is closed. By opening the fertilizer, the fertilizer remaining in the hopper 21 can be discharged down through the discharge hose 39.

At the upper part of the lower case 27b, a funnel portion R having a lower constriction is formed for guiding the fed fertilizer to an intermediate portion of the outlet pipe 31 , and the lower half portion of the feeding roll 26 is formed at the funnel portion R. It is arranged in a crowded place. Further, the middle portion of the outlet pipe 31 is formed into a narrowed shape, and the blower pipe 3
By increasing the wind speed of the carrier air introduced from 2 , the fertilizer is smoothly placed on the carrier air and sent out.

Further, ribs 41 for draining are provided on the outer peripheral surface of the hopper 21 so as to prevent rainwater adhering to the outer surface of the hopper from flowing to the feeding mechanism 22, and at the same time, the residual fertilizer. An eaves portion 42 is projectingly provided on the outer surface of the upper case 27a located above the discharge port 37, and even if rainwater flows down along the outer surface of the feeding case 27, the eaves portion 4 is provided.
It is guided to the outside by 2 and is prevented from flowing to the residual fertilizer discharge port 37.

A common feeding drive shaft 43 is laterally provided across the four feeding mechanisms 22 arranged in parallel, and the feeding drive shaft 43 and the main shaft 9 provided on the lower abdomen of the machine are interlocked and run. Feeding mechanism 22 at a speed synchronized with the speed
Is driven out. That is, a part of the rotational power of the main shaft 9 is converted into the lateral rotation of the crank arm 45 via the fertilization drive case 44, and the crank arm 45 and the drive arm 46 extended from the feeding drive shaft 43 are pushed. The drawing drive shaft 43 is reciprocally rocked by the rotation of the crank arm 45. Then, the feeding drive shaft 43 and the rotation support shaft 30 are interlocked and coupled via two sets of one-way clutches and a one-way transmission mechanism using a reverse transmission link, and each of forward and backward movements of the feeding drive shaft 43. Accordingly, the rotation support shaft 30 is pulsatingly rotated in a predetermined feeding direction (counterclockwise in FIG. 4). As described above, by performing fertilization application with the power from the traveling system, it is possible to maintain the fertilization amount per unit traveling distance, that is, the fertilization amount per unit area constant regardless of the traveling speed. Of. The fertilizer application amount per unit area can be adjusted by changing the connecting position between the drive arm 46 and the push / pull rod 47 and adjusting the reciprocating swing angle of the drive arm 46.

The fertilizer applicator 4 having the above-mentioned structure is supported by a horizontally long fixed frame 48 which is horizontally provided above the rear part of the machine body.
At the end of the fixed frame 48 on the right side of the machine body, an operation handle 49 for manually rotating the feeding drive shaft 43, which is a hexagonal shaft, is stored and mounted. This operation handle 49 has one end of a handle arm 49a made of a plate material,
The handle main body 49 is provided with a hexagonal hole for insertion and removal at the right end of the feeding drive shaft 43, and a round pipe at the other end.
In general, as shown in FIG. 8, the handle arm 49a is inserted into the fixed frame 48 made of sheet metal, and the handle main body is attached to the clamp member 50 formed by bending the spring wire. 49b is stored and retained by elastically locking it, and in the case of measuring the amount of fertilizer feeding out, the operation handle 49 removed from the fixed frame 48 is used as shown in FIG.
3 is inserted in the right end portion of 3 and the feeding drive shaft 43 is manually operated.

The blower device 25 is connected to the left end of the blower pipe 32 , and as shown in FIGS. 9 to 13, an impeller 52 mounted in a spiral fan casing 51 is attached to the fan casing 51 to produce an electric motor. Driven by 53, the outside air sucked from the intake port 54 provided in the center of the fan casing 51 is pressure-fed from the discharge port 55 opened in the tangential direction, and the outlet pipe 31 of each feeding mechanism 22 is blown through the blower pipe 32. It is designed to be supplied to.

As shown in FIGS. 11 and 12, the casing 51 is formed by joining a front divided casing 51a, to which the electric motor 53 is attached, and a rear divided casing 51b having an intake port 54. It is made of a resin molded product that is divided into two parts by connecting it with bolts. And
An intake duct 56 connected to the intake port 54 is integrally provided on the rear surface of the casing 51, an outside air intake port 56a of the intake duct 56 is opened upward, and an intake cover 57 that entirely covers the intake duct 56 is provided. Casing 5
1 is attached to the rear surface. The outside air intake 57a of the intake cover 57 is opened downward so that intake noise and fan drive are not easily transmitted to the driver seated in the driver's seat 19.

The electric motor 53 is connected to the front split casing 51a via a mounting flange 53a, and an impeller 52 is inserted and connected to a motor shaft 53b having an oval cross section and fixed by tightening with a nut 58. Has been done. The electric motor 53 itself is protected by a resin motor cover 59 connected to a mounting seat 70 on the front surface of the front casing portion 51a.

As shown in FIGS. 11 to 13, the motor cover 59 is formed by connecting a mounting flange 59b to the opening of a cylindrical cover body 59a.
A wire insertion port 71 is cut out from the mounting flange 59b to the cover body 59a, and a wire 72 connected to the electric motor 53 is inserted therein.

On the center side of the mounting flange 59b, a sealing ridge 73 having a tapered cross-sectional shape as shown in FIGS. 14 and 15 is provided so as to project in a partial arc shape divided by the wire insertion port 71. In the mounting seat 70 of the front casing portion 51a, a sealing groove 74 having a narrowed cross-sectional shape for engaging the sealing projection 73 is formed in a partial arc shape.
The sealing ridge 73 and the sealing groove 74 are tightly engaged with each other, whereby the motor cover 59 and the casing 51 are
The seal is made at the joint with.

Further, an outer peripheral ridge 75 which is fitted onto the mounting seat 70 of the front casing portion 51a is provided on the outer peripheral portion of the mounting flange 59b in the shape of a partial arc divided by the electric wire insertion port 71. Dust and water are prevented from entering the joint with the casing 51.

As shown in FIGS. 11 to 13, the impeller 52 has a boss 62 fitted on the motor shaft 53b on the front surface of the disk-shaped impeller side plate 61 on the intake port 54 side.
The main blade 63 group and the auxiliary blade 64 group are projectingly provided in a cantilever shape toward the intake port 54 side to form an open type impeller in which the intake port 54 side is completely opened. It is configured as a resin-integrated molded product.

The main blade 63 is formed in a curved radial shape extending from the outer periphery of the boss 62 to the outer peripheral end of the impeller side plate 61.
The auxiliary blades 64 are arranged in parallel in the circumferential direction at a constant pitch.
The impeller side plate 61 from a position away from the outer periphery of the boss 62.
It is formed in a curved radial shape extending over the outer peripheral edge of and is provided between the main blades 63. In this way, by providing the auxiliary blades 64 only on the outer peripheral side between the main blades 63, the number of blades is small in the central portion on the intake side of the impeller 52, and on the outer peripheral side for accelerating the intake air. The number of blades increases, the centrifugal acceleration function of the blade group can be enhanced without increasing the intake resistance near the center, and the rotational speed required to obtain the required air volume can be reduced. Also,
By reducing the blade spacing at the outer peripheral portion, it is possible to reduce the pressure fluctuations due to the rotation of the impeller 52, and these can synergize to ensure a required air volume while driving a fan with less noise. There is.

Here, the main blade 63 is set such that the height h1 from the impeller side plate 61 is set to be the same as that of the boss 62 on the central portion side of the casing 51 opposed to the intake port 54, and On the outer peripheral side, the impeller side plate 6
The height h2 from 1 is set to a dimension close to the front and rear inner width in the casing 51, and an inlet space s that is continuous over the entire circumference is formed immediately inside the intake port 54, and the inside of the intake port 54 in the case is formed. The outside air introduced into the main blade 63 smoothly flows into the main blades 63 with little resistance.

The height h3 of the auxiliary blade 64 arranged between the main blades 63 from the impeller side plate 61 is
Is set lower than the height h2 on the outer peripheral side of the main blade 63 and higher than the height h1 on the central portion side of the main blade 63, and the thickness t2 of the auxiliary blade 64 is set to be larger than the thickness t1 of the main blade 63. It is set large. In other words, the main blade 63 is continuously provided with its center side extending over the two surfaces of the impeller side plate 61 and the outer peripheral surface of the boss 62 that are orthogonal to each other, so that high bending strength in the rotational direction is secured. Auxiliary blade 64
Is cantilevered only from the impeller side plate 61 toward the intake port 54 side, and the rigidity tends to decrease in the blade surface direction, and vibration tends to occur. Is compensated by lowering.

In this case, depending on the condition of the resin material, etc., if the required rigidity is obtained only by suppressing the blade height of the auxiliary blade 64, the blade height becomes considerably low,
Although the blade area of the auxiliary blade 64 may be small, the blade height is increased by appropriately increasing the blade thickness of the auxiliary blade 64 within a range that allows reduction of the flow passage cross-sectional area between the blades. It becomes possible to secure the required rigidity without making the size of the auxiliary blade 64 too small and to suppress the reduction of the blade area of the auxiliary blade 64. Note that the center side edge 64a of the auxiliary blade 64 is obliquely cut toward the intake port 54 side so that the resistance to the inflow of the intake outside air between the main blades 63 is reduced. Is being considered.

Further, as shown in FIGS. 12 and 13, near the center of the impeller side plate 61 of the impeller 52, the axial center is in the range extending from the outer peripheral surface of the boss 62 to the center side end of the auxiliary blade 64. A communication hole 76 penetrating in the direction is formed, and a ventilation hole 77 for cooling is formed in the mounting flange 53a of the electric motor 53 so as to face the communication hole 76, so that the impeller 52 rotates. The vicinity of the communication hole 76 serves as a negative pressure portion, and the negative pressure sucks hot air in the electric motor 53 through the ventilation hole 77 of the mounting flange 53a.

Then, the hot air inside the electric motor 53 is sucked, so that the inside of the motor cover 59 becomes negative pressure, and the electric wire 7
The outside air is drawn into the motor cover 59 through the gap between the wire 2 and the wire insertion port 71, and is sucked into the motor housing from the inside of the motor cover 9 through the intake hole 53c of the electric motor 53, which is used for cooling the electric motor 53. It is.

As shown in FIG. 12, a sealing surface having a tapered cross-sectional shape similar to the protrusion 73 of the motor cover 59 shown in FIG. The protrusion 51c is provided in an annular shape, and the protrusion 51c for sealing is inserted into a seal groove having a narrowed cross-sectional shape of the front split casing 51a to be closely engaged with the split casings 51a, 5a.
Sealing is performed at the joint portion 1b.

[Brief description of drawings]

[Figure 1] Overall side view of rice transplanter with fertilizer application

[Fig.2] Overall plan view of rice transplanter with fertilizer application

[Figure 3] Rear view of the fertilizer applicator

FIG. 4 is a vertical sectional side view of the feeding mechanism.

FIG. 5 is a rear view of a longitudinal section of a feeding mechanism including a resting strip.

FIG. 6 is a vertical sectional rear view of the feeding mechanism.

FIG. 7 is a perspective view showing a storage portion of an operation handle.

FIG. 8 is a plane view showing a stored state of the operation handle.

FIG. 9 is a side view of the blower.

FIG. 10 is a rear view of the blower.

FIG. 11 is a cross-sectional plan view of the blower.

FIG. 12 is a vertical sectional side view of the blower.

FIG. 13 is a rear view of the impeller.

FIG. 14 is a perspective view of a motor cover.

FIG. 15 is an explanatory view showing a seal structure.

[Explanation of symbols]

21 Hopper 25 Blower device 26 Feeding roll 27 Feeding case 27a Upper case 27b Lower case 31 Outlet pipe 32 Blower pipe 32a Hard pipe portion 32b Rubber pipe portion 37 Residual fertilizer discharge port 41 Rib 42 Eave portion 43 Feeding drive shaft 48 Fixed frame 49 Operation Handle 51 Fan casing 56a Outside air intake port 57a Outside air intake port R funnel

Continuation of the front page (56) Reference JP 10-327635 (JP, A) JP 11-243721 (JP, A) JP 10-286010 (JP, A) JP 11-313519 (JP , A) JP 2000-32821 (JP, A) JP 10-205595 (JP, A) JP 2000-23518 (JP, A) (58) Fields investigated (Int.Cl. ⁷ , DB name) A01C 15/00-23/04 A01C 11/00 302

Claims (5)

(57) [Claims] 1. A fertilizer fed from the feeding mechanism is provided at a lower end of a hopper that stores powdered and granular fertilizer, and a feeding mechanism that supports a feeding roll rotatably driven around a horizontal axis in a feeding case. In the fertilizer applicator configured to convey the transport air supplied from the air blower to a predetermined fertilizer application site by a blower pipe , the feeding case is separated into an upper case connected to the lower end of the hopper and a lower part thereof. The upper case is composed of a lower case that is operably connected to the upper case, and the lower case is provided with a funnel part that collects and guides downflowing fertilizer, and an outlet pipe that is connected to the blower. , The feed fertilizer collected in the funnel part is supplied to the outlet pipe, and the upper half of the upper part of the lower case is inserted into the funnel part of the lower case. The feed roll deployed over the over scan and a lower case, hard the blowpipe
And a flexible rubber tube portion
A fertilizer applicator in which the outlet pipe is inserted and connected to a rubber pipe portion . 2. The fertilizer applicator according to claim 1, wherein a residual manure discharge port is opened in the upper case of the feeding case, and an eaves portion is projected on an outer surface of the upper case located above the residual manure discharge port. . 3. The fertilizer applicator according to claim 1, wherein a rib for draining water is provided on the outer peripheral surface of the hopper so as to project therefrom. 4. A drive shaft for rotationally driving the delivery roll is supported by an upper case of the delivery casing, and an operation handle for manual rotation attached to and detached from one end of the drive shaft is fixed for supporting the fertilizer application. The fertilizer application apparatus according to any one of claims 1 to 3, wherein the fertilizer application is configured so that the frame can be stored and mounted. 5. An outside air intake port of a centrifugal fan that constitutes the blower is formed by opening upward on an outer surface of a fan casing, and the outside air intake port is covered with an intake cover from above to form an intake cover. The outside air is taken in through a downward outside air intake port.
The fertilizer application apparatus according to claim 4.