JPH0446533Y2 - - Google Patents

Description

[Detailed description of the invention] Industrial application field The invention relates to a dust removal device for a threshing machine, and more specifically, to efficiently transfer grains discharged from the discharge port of a processing barrel together with straw waste to a swinging sorting shelf. This invention relates to a dust evacuation device for a threshing machine that is capable of collecting particles and reducing as much as possible the number of scattered particles discharged from a dust evacuation chamber.

2. Description of the Related Art In general, a threshing machine is known in which a processing chamber is provided in communication with a dust inlet provided at the rear side of a handling chamber to process unprocessed material discharged from the handling chamber. However, in this type of threshing machine, the grains processed by the processing barrel fall onto the swinging sorting rack, and the straw waste after processing is discharged from the exhaust port opened at the rear of the processing barrel into the dust exhaust chamber. However, some of the grains are discharged from the discharge port along with straw waste.In particular, the grains discharged from the side plate side at the rear end of the discharge port are sucked into the dust suction fan and are discharged as they are. Since they are discharged from the dust chamber to the outside of the machine, there is a problem in that the amount of scattered particles increases.

Problems to be Solved by the Present Invention The present invention was devised to solve these problems in view of the above-mentioned circumstances, and its purpose is to open an opening at the rear of the processing barrel. Even if some of the grains are discharged from the discharge port along with straw waste, etc., the grains that are about to be sucked directly into the dust suction fan along the side plate of the discharge port are placed on the swinging sorting shelf inside the dust extraction chamber. It is an object of the present invention to provide a dust evacuation device for a thresher that can efficiently collect dust particles and reduce the amount of scattered particles discharged from a dust evacuation chamber as much as possible.

Means for Solving the Problem The technical means adopted by the present invention to solve the above problems is to provide a dust removal chamber at the rear of the handling room, which communicates with the dust outlet provided at the rear of the handling room. In a threshing machine, a processing barrel is provided, and a swinging sorting shelf is installed in a sorting air path formed from below the handling chamber toward the dust removal chamber. A discharge port is opened toward the dust chamber, and a dust suction fan is provided below the tip of the swing sorting shelf on the opposite side facing the discharge port, and a side plate of the discharge port is extended toward the dust removal chamber; This is characterized in that the leading end of the extended side plate is bent toward the inside of the dust evacuation chamber to form a collision surface for grains that faces the suction direction of the dust suction fan.

Effect of the invention Therefore, according to the invention, the grains, etc. that have been threshed in the handling chamber fall onto the swinging sorting shelf installed in the sorting air passage below the handling chamber and are sorted. In addition, the unprocessed material sent to the processing barrel chamber, which is connected to the dust inlet provided at the rear of the processing chamber, is processed by the processing barrel, and straw waste, etc. is removed through an opening on one side of the rear side of the processing barrel chamber. It is discharged from the discharge port towards the dust removal chamber. Even if some of the grains are discharged from the discharge port along with straw waste, etc., and are sucked in the direction of the dust suction fan by the pressure of the sorting air passage and the suction action of the dust suction fan, the grains are discharged from the exhaust port extending toward the dust extraction chamber. The grains falling along the side plate of the outlet collide with the collision surface facing the suction direction of the dust suction fan formed at the tip of the side plate, and the impact causes them to move towards the inside of the dust extraction chamber, so they enter the sorting air path. It can be efficiently collected on the built-up swinging sorting shelf, and straw waste is reliably sucked up by the dust suction fan installed below the tip of the swinging sorting shelf, reducing the amount of dust that is discharged from the dust collection chamber. The number of grains can be reduced as much as possible.

Embodiment The embodiment of the present invention will be described in detail with reference to the attached drawings. Reference numeral 1 is a threshing machine, and the front side of the threshing machine 1 has a handling chamber in which a handling barrel 2 is pivoted in the front-rear direction. 3 is formed, and the grain culms are passed through the handling chamber 3 along the handling opening of the handling chamber 3.
A grain feeding device 4 is provided for feeding grain to the grains. Further, in the dust inlet 5 provided on the rear side of the handling chamber 3, a processing barrel chamber 6 is provided in parallel with the handling barrel 2 and communicates with the dust inlet 5 to process unprocessed materials. Processing barrel chamber 6
A dust removal chamber 7 is provided at the rear of the handling chamber 3 on one side of the rear side of the
The discharge port 8 is open toward. Reference numeral 9 denotes a receiving net stretched along the outer circumferential surface of the handling drum 2. Immediately below the receiving net 9, there is a swinging sorting shelf 10 for sorting leakage from the receiving net 9. It is constructed in the axial direction. Reference numeral 11 denotes a sorting air passage formed below the swinging sorting shelf 10, and a cover 12 is disposed at the front base end of the sorting air passage 11, and a cover 12 is provided on the rear discharge side of the sorting air passage 11. is facing toward the dust evacuation chamber 7. Further, on the opposite side of the dust removal chamber 7 facing the above-mentioned discharge port 8, a dust suction fan 13 is disposed below the tip of the oscillating sorting shelf 10.

The discharge port 8 of the processing barrel chamber 6 has an arc-shaped partition plate 1.
4 and a side plate 15, and is connected to the grain leakage net 16 of the swing sorting shelf 10.
It faces above the rear end of 7. And the side plate 15
is extended toward the inside of the dust extraction chamber 7, and by bending its extended tip toward the rack body 17 inside the dust extraction chamber 7, it can be made to face the suction direction of the dust suction fan 13. A protruding grain impact surface 18 is formed in the suction path.

19 is the first spiral 20 arranged below the grain leakage net 16, the second spiral is arranged behind the furthest spiral 16, and 21 is the leakage net of the processing barrel chamber 6.

In the configuration as described above, when performing threshing work, if the grain culm is fed to the handling barrel 3 by the grain culm feeding device 4, the grain culm transferred along the handling port will be threshed by the rotation of the handling chamber 2. , grains etc. leaked from the receiving net 9 are removed from the swinging sorting rack 1 installed directly under the receiving net 9.
Fall onto 0. Then, due to the crushing action accompanying the back and forth rocking motion of the rocking sorting shelf 10, the grains are sequentially transferred to the rear while being sorted by specific gravity, and only the fine grains are collected by the grain leakage net 16.
It leaks and is carried out of the machine and collected by the first spiral 19.

On the other hand, the cut grain culms remaining on the swinging sorting shelf 10,
The straw waste etc. are air-sorted by the pressure air of the Chinese clover 12 blown through the sorting air passage 11, the second waste is collected by the second spiral 20, and the straw waste etc. are discharged from the dust removal chamber 7.

Further, the unprocessed material sent to the processing barrel chamber 6 from the dust inlet 5 at the rear of the handling chamber 3 is processed in the processing barrel chamber 6, and the grains pass through the leakage screen 21 and are placed on the swing sorting shelf 10.
The straw waste and the like that fall upward are discharged into the dust removal chamber 7 through a discharge port 8 opened at the rear end of the processing barrel chamber 6. A part of the grains is discharged from the discharge port 8 along with straw waste, etc., and due to the pressure air of the sorting air passage 11 and the suction action of the dust suction fan 13, even if the grains are directed in the direction of the dust suction fan 13, the inside of the dust exhaust chamber 7 is A collision surface 18 for grains is formed at the tip of the side plate 15 extending toward the dust suction fan 13 and protrudes into the suction path, so that the grains are discharged along the side plate 15. The grains collide with the collision surface 18, and are separated from the straw waste etc. by the impact and head toward the swinging sorting shelf 10 inside the dust removal chamber 7. On the other hand, the separated straw waste etc.
Since the dust is reliably sucked by the dust suction fan 13 provided below the tip of the dust removal chamber 7, the grains are not directly discharged from the dust removal chamber 7 to the outside of the machine, and the oscillating sorting shelf 10 is efficiently
can be collected above.

Effects of the invention In short, the present invention provides a dust removal chamber at the rear of the handling chamber, a processing barrel chamber that communicates with a dust inlet provided at the rear of the handling chamber, and exhausts dust from below the handling chamber. In a threshing machine in which a swinging sorting shelf is installed in a parting air passage formed toward a chamber, a discharge port is opened toward the dust chamber on one side of the rear side of the processing barrel chamber, and is opposite to the discharge port. On the opposite side, a dust suction fan is provided below the tip of the swinging sorting shelf, and the side plate of the discharge port is extended toward the dust extraction chamber, and the tip of the extended side plate is inserted toward the inside of the dust extraction chamber. The structure is bent to form a collision surface for grains that faces the suction direction of the dust suction fan, so even if some of the grains are discharged along with straw waste etc. from the discharge port opened on one rear side of the processing barrel, The grains that fall along the side plate of the discharge port extending toward the dust exhaust chamber 7 are
It collides with the collision surface formed at the tip of the side plate facing the suction direction of the dust suction fan, and the impact separates it from the straw, etc. and directs it toward the swinging sorting shelf inside the dust extraction chamber, and after separation. Since the straw waste etc. are reliably sucked up by the dust suction fan installed below the tip of the swinging sorting shelf, the grains are not directly discharged from the dust removal chamber and are efficiently collected on the swinging sorting shelf. This has very useful practical effects, such as being able to reduce the amount of No. 3 scattered particles that are discharged outside the machine as much as possible.

[Brief explanation of the drawing]

The drawings show an embodiment of the dust removal chamber device for a threshing machine according to the present invention, in which Fig. 1 is an overall side view, Fig. 2 is a plan view of the same, and Fig. 3 is an enlarged view of the main parts. . In the figure, 3...handling room, 5...dust inlet, 6...processing barrel chamber, 7...dust exhaust chamber, 8...discharge port, 10...swinging sorting shelf, 11... sorting air path , 13... Dust suction fan, 15... Side plate, 18... Collision surface.

Claims (1)

[Scope of utility model registration request] A dust removal chamber is provided at the rear of the handling room, and a processing barrel chamber is provided that communicates with the dust outlet provided at the rear of the handling room. In a threshing machine with a swinging sorting shelf, a discharge port is opened toward the dust removal chamber on one side of the rear side of the processing barrel, and a discharge port is opened on the opposite side facing the discharge port below the swinging sorting shelf. a dust suction fan is provided in the dust exhaust chamber, a side plate of the discharge port is extended toward the dust exhaust chamber, and a tip of the extended side plate is bent inward of the dust exhaust chamber;
A dust evacuation device for a threshing machine, characterized in that a grain collision surface is formed that faces the suction direction of a dust suction fan.