JPS60257884A - Specific gravity separator - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] The present invention can effectively separate lightweight foreign substances with low specific gravity such as grass seeds and stems that are mixed in grains such as rice, adzuki beans, and soybeans. This invention relates to a specific gravity separator.

Conventionally, as a means to remove foreign matter mixed in grains, an inclined mesh plate is vibrated and air is blown up from below the mesh plate, grains are thrown onto the mesh plate, and grains with a light specific gravity are removed. Devices are known for removing foreign substances from grains by moving foreign substances downwards and objects with high specific gravity upwards. According to this device, foreign matter with a large specific gravity such as stones and metals can be effectively removed, but it is not easy to effectively remove light foreign matter such as grass seeds and stems.

Punishment J) 9 steps to make the door shape The present invention was made with attention to the above point, and the net-like diaphragm is provided at an angle, air is blown up from below the diaphragm onto the diaphragm surface, and the vibration In a specific gravity separator in which raw grains are charged onto a plate surface and the grains are separated and moved toward the upper end and lightweight foreign objects with low specific gravity are moved toward the lower end, a A wind direction guide plate is provided above the upper part of the diaphragm in parallel with the diaphragm, and raw material grains are charged onto the upper surface of the guide plate, and the input raw material grains pass through the upper surface of the guide plate. By guiding the air to fall on the diaphragm surface, the direction of the air once blown up from the diaphragm surface is partially changed toward the lower end by the guide plate, and on the other hand, the air is thrown onto the upper surface of the guide plate and the air is blown up from the diaphragm surface. A specific gravity separator that allows for more effective separation operations on the diaphragm surface by blowing away lightweight foreign objects from raw grains that fall downward from the lower end according to their specific gravity and separating them from the grains in advance. The purpose is to provide

An embodiment of the present invention will be described below with reference to the accompanying drawings.

In the figure, number 2 is a specific gravity separation device according to the present invention.

The specific gravity separation device 2 has a base frame 4. Reference numeral 6 denotes a fan device installed on the base frame 4, which functions to send air to the lower surface of the net-like diaphragm 8 provided above the fan device 6. The net-like diaphragm 8 is provided with an appropriate inclination as shown. This angle of inclination is appropriately set depending on the article to be processed. 10 is a motor for driving the fan device 6. Furthermore, the diaphragm 8 is capable of vibrating in the upper and lower directions as indicated by the arrows in FIG.
The diaphragm 8 is vibrated via an eccentric crank 14 driven by a motor 12. A wind pressure adjusting plate (not shown) for adjusting the wind pressure of air blown up from the fan device 6 is attached to the lower surface side of the net-like diaphragm 8. In the illustrated example, the reticular diaphragms 8 are arranged in two rows, but it goes without saying that they may be arranged in a negative row or in a plurality of rows.

6 is a wind direction guide plate installed above the upper part of the reticulated diaphragm 8 in parallel with the diaphragm 8, and blows air from the fan device 6 onto the diaphragm 8 and blows upward. It acts to change the direction of the air. As shown in FIG. 2, most of the blown air is deflected toward the lower end of the diaphragm 8, and a portion thereof is deflected toward the upper end. Reference numeral 18 denotes a raw material input hopper installed above the guide plate 16, and the raw material grains input from the hopper 18 are guided to the upper surface of the guide plate 16, and then flow down the upper surface of the guide plate 16 to pass through the guide plate 16. It falls from the lower end of the plate 16 onto the upper surface of the diaphragm 8. In other words, the upper surface of the guide plate is connected to the chute 20 into which the raw material grains are guided.
It functions as a. During the fall, the falling raw material grains are affected by the wind selection effect by the deflected airflow described above, and very light skins are blown away, and lightweight foreign objects such as grass seeds and stems are blown away, but the diaphragm It falls toward the bottom of the 8th surface, and heavy items such as grains are not affected by the wind and fall straight down.

Therefore, the raw material grains receive an effect similar to that of being sorted and separated by air selection in advance before falling onto the diaphragm 8 surface according to their specific gravity, and are then subjected to a separation operation by the diaphragm 8 on the diaphragm 8 surface. Therefore, the separation effects are very different. Reference numeral 22 is a net-like body that closes and shields the upper and lateral sides of the lower end of the diaphragm 8, and its role is to prevent very light foreign matter, such as skin, from being blown away by the wind selection effect of the deflected air flow mentioned above. Its lower part is continuous with a lightweight foreign matter outlet 24 that receives lightweight foreign matter discharged from the lower end of the diaphragm 8.

Reference numeral 26 denotes an air volume control plate installed over the entire width with a gap below the lower end of the diaphragm 8, so that the air flow blown from the fan device 6 does not become a strong flow near the lower end of the diaphragm 8. It works in such a way that it flows quietly. Due to the action of the air volume control plate 26, the movement of lightweight foreign matter at the lower end portion of the diaphragm 8 becomes quieter, and the sorting effect is improved accordingly.

Further, a net-like resistance member 28 is provided protruding from the upper surface of both ends of the lower end of the diaphragm 8, and grains are blocked by the resistance member 28, but airflow is allowed to pass through, thereby increasing the sorting effect. Can be done. Furthermore, a plate-shaped resistance member 30 is provided on the upper surface of the central portion of the lower end of the diaphragm 8 in a manner that it is displaced in the upper end direction than the mesh-shaped resistance member 28 . The air flow in the central portion is inevitably stronger than in both end portions and the sorting effect is reduced accordingly, but by installing this plate-shaped resistance member 30, it is possible to calm the air flow and enhance the sorting effect.

Reference numeral 32 denotes a product ratio I which is provided in series with the upper end portion of the diaphragm 8. Reference numeral 34 denotes an air volume adjusting member installed near the upper end of the diaphragm 8, which serves to deflect most of the air flow blown up from the surface of the diaphragm 8 toward the lower end of the diaphragm 8. As the air volume adjusting member, the mesh member 36 alone can sufficiently adjust the air volume j, but if a damper 38 is installed on the front side of the cough mesh material 36, the air volume can be adjusted easily. Further, the net member 36 serves to prevent the skin and the like from being scattered by the remaining air flow blowing toward the upper end.

Operation - With the above-described structure, when raw grains are introduced from the raw material input popper 18, the grains are guided down the second surface of the guide plate 16, that is, the chute 20 surface, and fall onto the diaphragm 8 surface (see FIG. 2). solid line). On the other hand, from the fan device 6 to the diaphragm 8
The air flow blown into the diaphragm 8 passes through the mesh of the diaphragm 8 and is blown upwards, and then hits the lower surface of the guide plate 16 and is mostly deflected toward one end of the diaphragm 8, with a part of it being deflected toward one end of the diaphragm 8. It is deflected toward the end (dashed line in Figure 2). Therefore, the raw grains that fall onto the 8 surfaces of the diaphragm are screened by the airflow while they are falling, with lighter grains being blown away and heavier grains being unaffected by the wind and falling upwards. Therefore, basically, the elements are scattered on the 8th surface of the diaphragm in a falling arrangement in order from the heaviest to the lightest, but if the above arrangement is disturbed due to the state of input or the state of foreign matter being mixed in. Of course there are also words.Also,
Very light foreign matter, such as skin, is carried as is by the airflow and is caught and collected by the net-like body 22 to the light foreign matter outlet 24.
is discharged from.

The raw material grains that have fallen onto the surface of the diaphragm 8 are vibrated by the vibration of the diaphragm 8, so that grains with a high specific gravity (heavy foreign objects such as stones and metals are included if any are present. These heavy foreign objects are removed by separate means). The vibration force of vibration Fj, 8 is transmitted to a greater extent, thereby moving toward the upper end. Since they are suspended by the air flow from the diaphragm 8 surface, lightweight foreign objects (grass seeds, stems, etc.) that are not affected by the vibrations will fall and move toward the bottom of the diaphragm 8 due to the air slide phenomenon. . When the grains that have moved toward the upper end reach the upper end of the diaphragm 3, they fall and are discharged from the product outlet 32.

When a lightweight foreign object moves toward one end of the diaphragm 8, it moves violently due to the wind blowing from the diaphragm 8 and reaches the lower end due to the air slide phenomenon. Because the air volume control plate 26 is present, there is no direct blow-up of the air flow, and only a small amount of air that enters through the gap between the diaphragm 8 and the air volume control plate 26 acts, so the movement of lightweight foreign objects is prevented. It becomes quiet and stays for the height of the mesh resistance member 28, and when more light foreign matter accumulates, it passes over the thin resistance member 28 and reaches the light foreign matter outlet 2.
It is discharged from 4. Furthermore, the movement of the lightweight foreign matter that has moved to the center portion of the diaphragm 8 becomes quiet due to the presence of the plate-shaped resistance member 30, and is similarly retained by the plate-shaped resistance member 30, and then is discharged from the lightweight foreign matter outlet 24 by climbing over it. be done. Such sorting makes it possible to effectively remove light foreign substances such as grass seeds and stems, which has been considered difficult until now.

i! 1lIjB Addition As described above, the present invention provides a mesh diaphragm at an angle,
Air is blown up from below the diaphragm to the diaphragm surface, raw grains are thrown onto the diaphragm surface, and the grains are separated and moved toward the -F end and lightweight foreign matter with low specific gravity is separated and moved toward the lower end. In the separating device, a wind direction guide plate is provided above the upper part of the diaphragm in parallel with the diaphragm in order to change the direction of the air blown up by coughing, and raw grain is placed on the upper surface of the guide plate. Since this is a pillow-type separator in which the input raw material grains are guided to fall through the upper surface of the guide plate and onto the surface of the diaphragm, wind selection operation is performed in addition to the conventional specific gravity bone M operation. This makes it possible to perform these operations at the same time, resulting in an extremely effective removal of lightweight foreign matter in grains.

[Brief explanation of the drawing]

FIG. 1 is an explanatory side view showing one embodiment of the present invention, FIG. 2 is a schematic side view showing flow of raw materials and air flow, and FIG. 3 is an explanatory top view of FIG. 1 with the mesh body omitted. . 2-Specific gravity separator 6-Fan device 8-Mesh diaphragm 16-Wind direction guide plate 18--Raw material input hopper
20-Shoe 1- 26-Air volume control plate 28-Mesh resistance member 30-Plate resistance member 32-Product outlet Patent applicant Harada Sangyo Co., Ltd. 816201B

Claims (4)

[Claims] (1) A net-like diaphragm is installed at an angle, air is blown up from below the diaphragm onto the diaphragm surface, raw grain is introduced onto the diaphragm surface, and light foreign matter with low specific gravity is removed from the grain toward the edges. In a specific gravity separator configured to separate and move toward the lower end, a wind direction guide plate is provided above the upper part of the diaphragm in parallel with the diaphragm in order to change the direction of the air blown up by coughing; A specific gravity separation device characterized in that raw material grains are charged onto the upper surface of the guide plate, and the loaded raw material grains are guided to fall onto the diaphragm surface through the upper surface of the guide plate. (2) An air volume adjusting member is provided near the upper end of the diaphragm, so that most of the air blown up from the surface of the diaphragm can be deflected toward the lower end of the diaphragm. A specific gravity separation device according to claim 1. (3) The specific gravity separation device according to claim 1 or 2, further comprising an air volume control plate for controlling air volume over the entire width below the lower end portion of the diaphragm. (4) A mesh resistance member is provided protrudingly on the top surface of both end portions of the lower end of the diaphragm, and the plate resistance member is displaced upward from the cough mesh resistance member on the top surface of the central portion of the bottom end of the diaphragm. The specific gravity separation device according to any one of claims 1 to 3, characterized in that the specific gravity separation device is provided in a protruding manner.