JP2023060649A - Cereal sorting screen drum device - Google Patents

Abstract

To provide a cereal sorting screen drum device which can easily and quickly exchange a porous screen of a sorting drum, efficiently sort a collected raw material to cereals and contaminants, can quickly sort cereals having different sizes, reduces damage of a raw material by cushioning property, suppresses clogging and can maintain sorting efficiency.SOLUTION: A sorting drum 2 is inclined downward and is mounted on a trestle 1, and is rotationally driven by a deceleration motor 15. The trestle 1 is provided with a cereal discharge duct 1D positioned below the sorting drum 2. The sorting drum 2 is composed of a screen frame, a rotary shaft 5 arranged in the screen frame, a paddle shaft 7 externally fit to the rotary shaft 5, a plurality of feed blades which are arranged in a circumferential direction in the paddle shaft 7 so as to be separated from each other in an axial direction and has an outer peripheral end fastened to the screen frame, and a porous screen 4 which is wound around the outside of the screen frame and is composed of a soft synthetic resin material, and the sorting drum 2 is wholly covered with a cover 9.SELECTED DRAWING: Figure 4

Description

The present invention efficiently sorts and removes grains such as beans, rice, wheat, buckwheat, etc. and contaminants such as large pods, straws, etc. before drying the collected raw materials, and sorts according to the size of the grains. It relates to a grain sorting screen drum device capable of

A sorting machine or rough sorting machine for sorting out impurities from harvested raw materials is known, and a perforated plate drum or a wire mesh drum is rotated as a means of sorting, and raw materials of different sizes are separated into grains and impurities. are sorting.

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In conventional drum-type sorting machines, the drum is made of perforated metal plates and wire netting, so the raw material is damaged, it takes time to sort because it bounces during sorting, and the sorting efficiency is not good. There are problems in that it takes time and labor to remove the caught material, and that if the drum is damaged, it is necessary to replace the entire drum, which increases the cost of the drum and the cost of the replacement work.

The present invention has been devised in view of the problems of the prior art, and since the perforated screen that constitutes the sorting drum can be replaced easily and quickly, the collected raw material can be efficiently sorted into grains and contaminants, and the size can be reduced. In addition, the cushioning property reduces damage to the raw materials and suppresses clogging, so the sorting efficiency can be maintained and the sorting work is quiet. It is an object of the present invention to provide a grain sorting screen drum apparatus.

(1) The means of the present invention configured to solve the above-mentioned problems consists of a frame and a cylindrical body with both ends in the axial direction opened, mounted on the frame in a state of being inclined rearwardly downward, and rotated by a drive source. and a grain discharge duct and a contaminant discharge duct provided on the pedestal below the screening drum, and the screening drum comprises a screen frame made of a metal cylindrical frame, and the screen a rotating shaft disposed within a frame; a plurality of grain feeding blades spaced apart from each other in the axial direction and disposed circumferentially around the rotating shaft; The screening drum is composed of a perforated screen made of a wound soft synthetic resin material, and the screening drum is constructed such that the one end side, the other end side and the side surface are covered with a cover.
(2) The perforated screen is preferably made of urethane.
(3) Further, the porous screen is preferably wound around the screen frame so as to be replaceable with the same or different porous screen.
(4) It is preferable that the cover is provided with a scraper that contacts the peripheral surface of the sorting drum.
(5) Further, it is preferable that the cover is provided with a viewing window.

Since the present invention is constructed as described above, it has the following effects.
(1) Since the sorting drum is wound with a perforated screen made of soft synthetic material, damage to grains during sorting can be reduced, and reduction in sorting efficiency due to jumping of raw materials can be suppressed.
(2) Since the sorting drum is constructed by winding a perforated screen replaceably around a screen frame, it is easy to replace worn or damaged perforated screens. Maintenance costs can be saved because only the perforated screen needs to be replaced without replacing the .
(3) Since the feed vane is arranged in the sorting drum, the foreign matter sorted out from the raw material can be quickly discharged, and the sorting time is optimized as an effect by making it difficult for the sorting to be hindered due to the accumulation of the foreign matter. can.
(4) Since the scraper is in sliding contact with the outer peripheral surface of the sorting drum, clogging of the porous screen can be prevented and sorting efficiency can be maintained.

1 is a front view of a grain sorting screen drum device according to an embodiment of the present invention; FIG. It is a rear view of a grain sorting screen drum device. It is a right side view of a grain sorting screen drum device. It is an exploded perspective view of a grain sorting screen drum device. FIG. 3 is a perspective view of a sorting drum; Fig. 3 is a longitudinal sectional view of a sorting drum; FIG. 4 is a perspective view of a screen frame that constitutes a sorting drum; It is a perspective view of a paddle shaft and a feed vane. FIG. 4 is an explanatory diagram showing the arrangement relationship between a paddle shaft and feed blades; It is the block diagram which looked at the inside of the sorting drum apparatus from the other end side. It is a longitudinal cross-sectional view of a sorting drum device.

Embodiments of the present invention will be described in detail below with reference to the drawings. In the figure, reference numeral 1 denotes a metal mount, which includes a rectangular frame 1A, one side leg 1B protruding downward from the frame 1A, and a leg 1B protruding downward from the frame 1A. The other leg 1C is set to be slightly shorter than the one leg 1B, so that the frame 1A is inclined rearwardly downward by about 4 to 5 degrees. The frame 1A is provided with a grain discharge duct 1D projecting downward, and the other leg 1C is provided with a contaminant discharge duct 1E for discharging the sorted contaminants.

Reference numeral 2 denotes a sorting drum rotatably installed horizontally on the base 1. As shown in FIG. Reference numeral 3 denotes a screen frame made of a metallic cylindrical frame that constitutes the sorting drum 2 . The screen frame 3 is composed of one side annular frame portion 3A, the other side annular frame portion 3B spaced apart in the axial direction, and a gently helical outer peripheral frame portion 3C connecting the pair of annular frame portions 3A and 3B. , and as shown in FIG. 7, the whole is of a skeleton-like construction.

Numeral 4 indicates a perforated screen wound around the screen frame 3 to constitute a sorting drum 2 together with the screen frame 3 and sort the raw material into grains and impurities. The perforated screen 4 is made of a soft synthetic resin material such as urethane, and linear vertical members 4A along the axial direction of the screen frame 3 and linear horizontal members 4B along the circumferential direction of the screen frame 3 are arranged at predetermined intervals. It is formed into a square sheet shape by arranging it in a shape, and as an example, a large number of square sorting holes 4C, 4C, . . . there is
The perforated screen 4 is provided with serrated fastening portions 4D, 4D which are continuous on both ends in the winding direction, and is screwed to the screen frame 3 in a state where the fastening portions 4D, 4D are engaged. By doing so, the perforated screen 4 is detachably wound around the screen frame 3 .

Reference numeral 5 denotes a rotary shaft which is positioned substantially at the center of the screen frame 3 and inserted in the axial direction. It is

Reference numeral 6 denotes a material feeding blade mechanism arranged in the screen frame 3 . A paddle shaft 7 constitutes the feed blade mechanism 6 and is provided with a feed blade 8 which will be described later. 8, 8, . . . indicate a plurality of feed blades spaced apart in the axial direction of the paddle shaft 7 and arranged on the outer periphery of the paddle shaft 7 while being displaced by 90 degrees in the circumferential direction. Each of the feed blades 8 has a substantially fan-like shape, and has an inner peripheral edge 8A formed in a concave curve to be fixed to the peripheral surface of the paddle shaft 7, and an outer peripheral edge 8B formed in a convex curve to attach to the screen frame 3. It is fixed to the inner surface of the outer peripheral frame portion 3C.
Here, on the other side of the sorting drum 2, that is, on the outlet side, the feed blades 8 located radially with respect to the fastening portions 4D, 4D of the perforated screen 4 are constructed in two layers to make the center of gravity is adjusted to reduce the load on the deceleration motor 16, which will be described later.

Thus, the sorting drum 2 consists of a screen frame 3, a perforated screen 4 detachably wound around the screen frame 3, a rotary shaft 5 inserted in the screen frame 3, and paddles provided on the outer periphery of the rotary shaft 5. It is composed of a shaft 7 and a plurality of feed blades 8, 8, .

9 denotes a metal cover that covers the sorting drum 2 . Reference numeral 10 denotes a one-side cover plate that constitutes the cover 9. The one-side cover plate 10 has a shaft hole 10A positioned substantially in the center and a raw material inlet 10B positioned to the side of the shaft hole 10A. A hopper 11 protrudes from the raw material inlet 10B so as to facilitate the introduction of the raw material.
Reference numeral 12 denotes the other side cover plate having an outer shape substantially the same as that of the one side cover plate 10. The other side cover plate 12 is positioned substantially at the center and provided with a shaft hole 12A.
Reference numeral 13 denotes a side cover plate. The side cover plate 13 comprises a pair of left and right side plate portions 13A, which are installed on the pair of side plate portions 13A and 13A so as to cover the sorting drum 2. The outer shape of the side cover plate 13 is a snow-free roof type when viewed from the side. Each side plate portion 13A is provided with viewing windows 13A ₁ and 13A ₁ .

A scraper 14 is provided downward on the inner surface of the upper plate portion 14B. The scraper 14 comprises a main body 14A and an attachment plate 14B for attaching the main body 14A to the upper plate portion 13B of the side cover plate 13. There is. The scraper 14 is in sliding contact with the outer peripheral surface of the sorting drum 2, specifically, the perforated screen 4, thereby preventing clogging of the sorting holes 4C of the perforated screen 4 with grains and contaminants and improving the sorting efficiency. is maintained.

Reference numeral 15 denotes a deceleration motor for rotationally driving the sorting drum 2. The deceleration motor 15 is housed in a casing 15A and installed on the other side cover plate 12, and is connected to the shaft end 5B of the rotating shaft 5. As shown in FIG.

The grain sorting screen drum device according to the present embodiment is constructed as described above, and its operation will be described below. For sorting, the collected raw materials are introduced into the sorting drum 2 from the raw material inlet 10B through the shooter 11 by transfer means such as a belt conveyor. In the sorting drum 2 rotated by a deceleration motor 15, the raw materials are sent from one side to the other side by the feeding blades 8, 8, . . . drop to and collect.

On the other hand, contaminants larger than the sorting hole 4C are sent to the other side by the feed vane 8 without falling and discharged from the contaminant release duct 1E. In these sorting processes, the perforated screen 4 of the sorting drum 2 is made of a soft synthetic resin such as urethane, and the screen oscillates so that the raw materials are less likely to get caught in the sorting holes 4C and clogging can be suppressed.

REFERENCE SIGNS LIST 1 stand 2 sorting drum 3 screen frame 4 perforated screen 5 rotating shaft 8 feeding blade 9 cover 13A ₁ viewing window 14 scraper 15 reduction motor

Claims (5)

a pedestal, a cylindrical body with both ends in the axial direction opened, mounted on the pedestal in a downwardly inclined state, and rotatable by a drive source; The sorting drum comprises a screen frame made of a cylindrical metal frame, and a rotating shaft arranged in the screen frame while being axially spaced from the rotating shaft. The screen is composed of a plurality of grain feeding blades arranged in the circumferential direction on the shaft and fixed to the screen frame at the outer peripheral end, and a porous screen made of a soft synthetic resin wound around the screen frame. A grain sorting screen drum device in which the drum is covered with a cover on the one end side, the other end side and the side surface. 2. The grain sorting screen drum device according to claim 1, wherein said perforated screen is made of urethane. 2. The grain sorting screen drum device according to claim 1, wherein said perforated screen is wound around said screen frame so as to be replaceable with the same or different perforated screen. 2. The grain sorting screen drum device according to claim 1, wherein said cover is provided with a scraper contacting the peripheral surface of said sorting drum. 2. The grain sorting screen drum device according to claim 1, wherein said cover is provided with a viewing window.

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