JPH086438Y2 - Grain sorter structure - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION <Industrial Application Field> The present invention relates to a grain selection section structure.

<Prior Art> Generally, in a general-purpose combine, the grain culm cut by the pretreatment unit is lifted to a threshing unit by a feeder and subjected to a threshing process.

Below the threshing section consisting of the handle barrel and the catching net, there is provided a sorting section for sorting a mixture of threshed grains and culms.

The sorting section is provided with an oscillating sorting plate for loosening the grain and the culm while swinging, and sorting the grain with the sorting wind blown from below, and a blower fan for causing the sorting wind. Then, one air-blowing fan is attached to the conventional sorting unit, and the air-blowing from the one air-blowing fan is diverted to the plurality of rocking sorting plates to send the sorting air.

Further, although there are those in which two blower fans are attached, those having different blower capabilities are used.

<Problems to be solved by the invention> However, according to the above-mentioned conventional structure, there is a drawback that turbulent flow occurs when the blast is divided, and a sufficient sorting effect cannot be obtained. There was a problem that the wind force weakened.

As a result, the sorting ability of each swing sorting plate is different, and the sorting ability of the entire sorting unit is reduced.

On the other hand, in the relationship between the wind force of the sorting wind and the grain pan in the swing sorting plate, the sorting wind at the transfer end of the grain pan needs to have a predetermined wind force. It is necessary to determine the length of the grain pan according to the wind force of.

Similarly, even when two blowers are used, the length of the grain pan of the swing selection plate has to be adjusted according to the blowing ability of each blower.

<Means for Solving the Problem> The present invention for solving the above-mentioned problem is oscillated in the sorting unit 7 for receiving and sorting the grain culm processed by the upper threshing unit 5. An oscillating sorting plate comprising a transfer plate for transferring grain culms and a sorting body for sorting the treated grain stalks, which are located at the transfer end of the transport plate and are blown from below, and the sorting wind. In a configuration having a blowing fan and a plurality of the swing sorting plates for sequentially sorting the treated grain culms, the blowing fans 25, 29, 34 are provided for the swing sorting plates 21, 27, 33, respectively.
Blower fans 25, 29, and 34 have substantially the same blowing capacity.
It is characterized in that the distances 1 to the starting ends of the sorting bodies 43, 47, 51 of 7, 33 are substantially the same.

<Operation> The grain culm that has been threshed by the threshing unit 5 reaches the swing sorting plate 21 provided in the sorting unit 7. The oscillating sorting plate 21 swings and transfers the treated grain culm to the sorting body 43 by the transfer plate 41, and the treated grain culm is inherited from the transfer end of the transfer plate 41 to the sorting start end of the sorting body 43. As for the treated culms on the sorting body 43, the culms of light weight and heavy grains are wind-selected by the sorting wind from the blower fan 25 provided on the lower side of the transfer plate 41.

Grains and culms which have not been sorted by the first swing sorting plate 21 are sequentially sorted by the swing sorting plates 27, 33 and the blower fans 29, 34 provided thereafter.

On the other hand, from the blower fans 25, 29, 34 to the swing selection plates 21, 27, 33
Since the distances 1 to the starting ends of the sorting bodies 43, 47, 51 are substantially the same, the blower fans 25, 29, 34 provided below the swing sorting plates 21, 27, 33 have The blowing capacity can be made the same, and the sorting capacity of each of the swing sorting plates 21, 27, 33 can be made uniform. Further, it becomes possible to use a fan having the same standard.

<Embodiment> An embodiment of the present invention will be described in detail below with reference to the drawings. FIG. 1 is an overall side view showing the internal structure of a general-purpose combine. In front of the combine main body 1 placed on the crawler traveling device, a pretreatment unit 2 for collecting and cutting the grain culms.
Is attached so that it can be raised and lowered. A feeder 3 that conveys the cut grain culm to the combine body 1 is provided between the pretreatment unit 2 and the combine body 1.
The grain culm is fed to the threshing section 5 provided in the combine body 1 through the feeder port 4 formed at the front part of the grain.

The grains and the culms that have been threshed in the threshing unit 5 are sorted in the sorting unit 7, and the grains are sent to the grain tank 9 through the fried barrel 8.

The threshing unit 5 has a handle cylinder 11 axially supported in the front-back direction,
Rotational force is applied from the input pulley at the rear end to rotate. On the lower side of the handle cylinder 11, a receiving net formed in a semi-circular cross section
13 are attached along the outer periphery of the handle cylinder 11.

A large-diameter screw 17 is provided on the outer peripheral surface of the conical tip of the handle cylinder 11.
Is attached, and screw-shaped handle teeth 19 are provided over the entire length of the handle cylinder 11 on the rear outer surface of the handle cylinder. The large-diameter screw 17 scrapes the culm by the rotation of the handle cylinder 11, and the handle teeth 19 transfer the grain culm to the rear while threshing the culm.

Here, as shown in FIGS. 2 and 3, the width H of the feeder port 4 is formed to be substantially equal to the diameter D of the handle cylinder 11, and the center positions thereof are substantially the same position. If the width H of the feeder mouth 4 is too large, the amount of grain culm supplied will exceed the processing capacity of the handling cylinder 11, and the grain culms will accumulate in the feeder mouth 4.
If the width H is too small, the grain culms are caught, and the supply of the grain culms to the handling cylinder 11 is hindered. In the structure of this embodiment, the width H of the feeder mouth 4 and the diameter D of the handling barrel 11 are equalized, and as a result, the processing ability of the handling barrel 11 is maximized with respect to the grain culms supplied from the feeder port 4. It can be used and the supply and transfer of grain culms can be carried out smoothly. In the structure of this embodiment,
The diameter D of the handle cylinder 11 and the width H of the feeder port 4 are both 700 mm.
Has become.

On the other hand, the length L of the conical tip portion of the handle cylinder 11 is determined based on the width H of the feeder port 4. The length L of the conical tip portion has a limit judging from the length of the entire handling cylinder 11, but if it is too short, a large amount of grain culms supplied by the feeder port 4 cannot be smoothly transferred. However, there arises a problem that grain culms are accumulated in the feeder mouth 4. Furthermore, an excessive load is also applied to the supporting portion of the handle cylinder 11 and its peripheral portion. In the structure of the present embodiment, L is determined to be a sufficient length based on the width H of the feeder port 4, so that the grain culm supplied from the feeder port 4 is smoothly handled by the conical tip portion of the handling cylinder 11. It is transferred to the outer circumference of the gripper 11 and threshed.

A sorting unit 7 is provided below the receiving net 13. The structure of the sorting unit 7 will be described below. An oscillating sorting plate 21 is arranged below the receiving net 13, and a blower fan 23 is provided between the oscillating sorting plate 21 and the receiving net 13. The blower fan 23 blows air to select a part of the treated grain culm in which the grains falling from the receiving net 13 and the culm are mixed.

The swinging sorting plate swings up and down and front and back to sort the treated grain culm into grain and culm, and transports the grain in the transfer end direction. The oscillating sorting plate of the present embodiment is provided with three swing sorting plates, and is composed of a transfer plate at the transfer start end and a sorting body provided at the transfer end of the transfer plate. The transfer plate is formed in a sawtooth-shaped cross section, and the cross-sectional shape determines the transfer direction by swinging. The sorting body has a gap through which sorting air blown from below passes, and the culms are blown away by the sorting wind to sort out heavy grains and light culms. Further, blower fans that generate the selection winds are provided below the swing selection plate.

The sorting body 43 of the rocking sorting plate 21 that first sorts the treated grain culms
Is a plurality of fins fixed at a predetermined interval at right angles to the transfer direction, and the mounting direction is directed obliquely rearward according to the sawtooth shape of the transfer plate 41. When the treated grain culm consisting of grains and culms reaches the sorting body 43, the sorting wind blown from between the fins blows the culms backward and the grains fall from the gaps between the fins. An oscillating sorting plate 27 is further provided below the oscillating sorting plate 21, and a blower fan 25 for sending sorting air to the oscillating sorting plate 21 is provided between the oscillating sorting plates 21, 27. There is.

The sorting body 47 of the swing sorting plate 27 has a mesh shape, and the culms which could not be sorted by the sorting body 43 of the swing sorting plate 21 are sorted by the sorting wind. Similarly, a blower fan is provided below the swing selection plate 27.
29 is provided to send the sorting wind. The grains sorted by the sorting body 47 are guided to the lower portion of the fried cylinder 8 by the first helix 31 provided on the lower side of the swing sorting plate 27 and sent to the grain tank 9.

An oscillating sorting plate 33 is further provided on the end side of the oscillating sorting plate 27 to sort the grains that have been blown with the culms. The sorting body 51 of the oscillating sorting plate 27 is a comb-like straw rack in which a plurality of fins are fixed in parallel at the end of the transport plate 49 in the transport direction. Below the swing selection plate 33, a blower fan 34 is provided similarly to the swing selection plates 21 and 27, and a sorting body 51 is provided.
Send the sorting wind to.

In this sorter 51, long culms are sorted and discharged by the suction fan 37, and the mixture of dropped grains and short culms is returned from the second spiral 35 to the threshing unit 5.

If the distance 1 from the blast fan to the start of the sorting body where sorting by the blasting is started is too long, turbulent flow occurs in the sorting air from the blasting fan, which reduces the sorting ability and is included in the grain. The amount of culmination increases. If the distance l is too short,
The selected grains enter the blower fan, or the sorting wind is too strong, and the grains are also blown off, which prevents proper sorting.

Therefore, in the selection unit 7 of the present embodiment, the length of each transfer plate is adjusted so that the distance from the blower fan to the start end of the selection body is the distance 1 that is most suitable for the blowing ability of the blower fan. Further, since the blower fans 25, 29, 34 have the same blowing ability, the swing selection plates 21, 27, 33 have the same distance l.

With such a configuration, each swing selection plate 21, 2
Since the sorting ability of 7,33 is in the best condition,
The sorting ability of the entire sorting unit 7 is improved. Further, since the blowing fans 25, 29, 34 having the same capacity are used, the assembling is easy and the cost can be reduced. In the structure of this embodiment, the distance 1 is 300 mm.

On the other hand, a blower fan 39 is provided above the feeder port 4 for forcibly feeding the grain culm sent by the feeder 3 into the threshing unit 5. The blowing and suction capacities of the blowing fan 39 and the suction fan 37 are set stronger than those of the other blowing fans 23 and the like. A powerful fan is installed at the beginning and the end, so for example threshing of wet culms, etc.
A series of processes such as sorting and discharging are smoothly performed, and troubles such as clogging of the receiving net 13 are reduced.

When threshing buckwheat, rapeseed, korian, etc. with the combine of this example, the selection conditions such as few grains are different depending on the type of crop, but the wind pressure by changing the rotation speed of the blower fans 25, 29, 34 It is possible to change each crop, and it is possible to sort according to various crops.

At this time, if the pulley for inputting the rotational force to each of the blower fans 25, 29, 34 is a variable pulley and the structure is such that the variable pulley can be operated to arbitrarily adjust the contact radius of the transmission belt,
The rotational force of the blower fans 25, 29, 34 can be changed, and the wind force of the sorting wind can be changed at any time.

<Effect of the Invention> According to the structure of the present invention configured as described above, the distance from the blower fan to the sorting body of the swing sorting plate is made substantially the same for each swing sorting plate, and the blowing ability of the blower fan is set. Since the above are substantially the same, the sorting ability of each swing sorting plate is made uniform, and the sorting efficiency of the entire sorting unit is improved.

Furthermore, since the capacity of the blower fan is the same, it is possible to attach a blower fan of the same standard to each rocking selection plate, which allows shared use of the blower fan, and also to improve assembly efficiency and reduce manufacturing costs. There is also an advantage that is possible.

[Brief description of drawings]

FIG. 1 is a side view of a general-purpose combine using one embodiment of the present invention, showing a threshing section and a sorting section of a main body,
FIG. 2 is a front sectional view of the main body, and FIG. 3 is a front view of the main body for showing the feeder opening. 1: Combine main body, 2: Pretreatment section 5: Threshing section, 7: Sorting section 11: Handling cylinder, 13: Receiving net 21,27,33: Swing sorting plate, 25,29,34: Blower fan 41, 45,49: Transfer plate, 43,47,51: Sorting body

Claims (1)

[Scope of utility model registration request] 1. A transfer plate for swinging and transferring the treated grain culm in a sorting unit (7) for receiving and sorting the grain culm processed by the upper threshing unit (5) and a transfer end of the transport plate. Has a rocking sorting plate composed of a sorting body that sorts the treated grain culms transferred from the bottom by a sorting air blown from below, and a blower fan that sends the sorting wind, and sequentially sorts the treated grain culms. In order to achieve this, in the configuration in which a plurality of swing selection plates are provided, the blower fan (2
5), (29), (34) for each swing selection plate (21), (27),
Blower fans (25), (29),
(34) has almost the same blowing capacity, and each blowing fan (25),
From (29), (34), each swing selection plate (21), (27), (3
Grain sorting section structure in which the distance (l) to the starting ends of the sorting bodies (43), (47) and (51) of 3) is substantially the same.