JPH02152581A - Stone removing grain sorting machine - Google Patents

Abstract

PURPOSE:To easily perform decomposing and cleaning works without utilizing a specific tool by slantingly placing a grain sorting gutter provided with a stone removing sorting plate having many small holes in the bottom surface on a plurality of supporting rollers and also freely detachably engaging the tip part of an eccentrically turned rocking arm with the grain sorting gutter. CONSTITUTION:A mechanical body 3 housing an electric motor 6 and a fan 8 is fixed in the case 2 of a stone removing grain sorting machine. A grain sorting gutter 4 is slantingly placed freely detachably on the mechanical body 3 via a plurality of supporting rollers 18 (17). A stone removing sorting plate with many small holes bored thereinto is provided on the bottom face of the grain sorting gutter 4. Further a rocking arm 16 is supported eccentrically at constant distance on a rotary shaft 12 interlocked with the electric motor 6. The tip of the rocking arm 16 is freely detachably engaged with the engaging part 4b of the grain sorting gutter 4. Grain light in sp. gr. are separated and recovered from the foreign matters such as stone weighty in sp. gr, by both reciprocating motion of this grain sorting gutter 4 back and forth and blast passing through the small holes bored into the stone removing sorting plate.

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial Field of Application) The present invention relates to a stone removal grain sorting machine that separates stones mixed in grain.

(Prior Art) Conventionally, there have been known grain sorting machines that screen and separate foreign substances such as stones and metals mixed into grains.
As shown in Publication No. 3-46985, this stone-pulling grain sorting machine integrally forms a stone-pulling sorting plate and a wind barrel that accommodates a blower fan, and these are connected to the case by a pair of swinging links. It is constructed by hanging.

(Problem to be Solved by the Invention) By the way, when such a stone-pulling grain sorting machine is used for a certain period of time, the small holes formed in the stone-pulling sorting plate become clogged with bran generated from the grains, resulting in clogging. Therefore, the sorting work cannot be performed efficiently. For this reason, when sorting work has been carried out for a certain period of time, it is necessary to clean the stone removal sorting board, but as mentioned above, the stone removal sorting board is formed integrally with the wind cylinder that houses the blower fan. In addition, because they are suspended from the case via swing links, in order to separate them, a large number of connecting parts must be removed using a specified tool, and even if they could be separated, they are heavy and heavy. The drawback was that it could not be easily cleaned.

The present invention has been made in view of the above points, and it is an object of the present invention to provide a stone removal grain sorting machine whose stone removal sorting plate can be easily attached and removed so that disassembly and cleaning can be easily performed.

(Means for Solving the Problems) The present invention provides an airframe in which an electric motor and a blower fan driven by the electric motor are housed in a case, and a plurality of support rollers are pivotally supported at spaced apart positions. fixed,
On the other hand, a grain sorting machine having a stone removal sorting plate with a large number of small holes on the bottom surface is mounted on the support roller, and is further oscillated by a rotary shaft that is rotationally driven at an appropriate speed by the electric motor. The arm is eccentrically supported, and the tip of the swinging arm is configured to detachably engage with an engagement portion provided on the grain sorting machine.

(Function) First, when the electric motor is driven, the blower fan rotates and at the same time, the rotating shaft of the swing arm also starts rotating. For this reason, as a result of driving the swinging arm that is eccentrically supported by a certain distance on the rotating shaft, the grain sorting machine that is engaged with the swinging arm is supported on the support roller that is pivotally supported on the machine body. It performs reciprocating motion in the front and back direction. The reciprocating motion of this grain sorter and the air blowing from the blower fan that passes through the small holes formed in the stone sorting plate of the grain sorter, together with the continuous supply of grain, move the grains with light specific gravity downward. Foreign objects such as stones that are transported and have a heavy specific gravity will stay near the position where the grain falls. In this way, the grains slide down to the front of the grain sorter and are discharged from the case from the front end of the grain sorter.

When the grain supply runs out, by opening the gate, which is normally held in the closed position, foreign objects such as stones are transported upstream along with some of the grain remaining on the stone removal sorting board, and are transferred to the storage box via the inclined guide. will be collected within.

By the way, due to use, the stone removal sorting board becomes clogged,
If cleaning is required, lift the tip of the swinging arm and release it from the engaging part of the grain sorter.
It becomes possible to take out only the grain sorting machine from the case.

(Example) Hereinafter, one embodiment of the present invention will be described with reference to the drawings.

Reference numeral 1 denotes a grain sorting machine, and an electric motor 6 is installed in a case 2.
A machine body 3 housing a blower fan 8 driven by this electric motor 6 is fixed, and a grain sorting machine 4 is removably mounted on the machine body 3. A hopper 5 for supplying grain to the grain sorting machine 4 is detachably attached to the upper part of the case 2.

An electric motor 6 is housed in the lower corner of the case 2, and a pulley 7 is attached to its output shaft. An opening 2a is formed in the front of this case 2 (on the right side in Fig. 1), which serves as an outlet for the sorted grain, and in the rear thereof, as shown in Fig. 4, there is an opening 2a for discharging foreign matter such as stones. An opening 2b serving as an exit is formed together with an inclined guide 2C.

On the other hand, a wind barrel 3a is integrally formed in the lower part of the fuselage 3, and a blower fan 8 having a plurality of blades 8a is accommodated in the wind barrel 3a. Further, the rotation shaft 8b of the blower fan 8 is supported by a bearing (not shown) attached to the body 3 and extends outward, and pulleys 9 and 10 are attached to both ends of the shaft. A pulley 7 attached to the output shaft of the electric motor 6 and the blower fan 8
A belt 1 is connected between the pulley 9 attached to the rotating shaft 8b of the
1 is hanging. Therefore, when the electric motor 6 is driven to rotate, the blower fan 8 is also driven to rotate, and the air can be blown through the opening 3b formed in the upper part of the machine body 3 toward the stone removal plate 19 of the grain sorting machine 4, which will be described later. (See Figure 4).

Furthermore, a rotating shaft 12 is pivotally supported by a bearing (not shown) provided above the fuselage 3, and a rotating shaft 8 of the blower fan 8 is attached to one end of the rotating shaft 12, as shown in FIG.
A pulley 1 with a larger diameter than the other pulley 10 attached to b
3 is attached, and a belt 14 is suspended between these pulleys 10 and 13. Further, a rotating shaft 15 whose axis is at a point offset a certain distance from the axis of the rotating shaft 12 is attached to the other end of the rotating shaft 12, and a swing arm 1 is attached to the rotating shaft 15.
The base end of 6 is rotatably supported. And aircraft 3
A pair of support rollers 17 and 17 are rotatably supported substantially at the upper center so as to sandwich the grain sorting machine 4, while a pair of support rollers 17 and 17 are rotatably supported at the center of the grain sorting machine 4 in the width direction. support roller 1
8 is rotatably supported so as to be located near the opening 2a.

The mounting positions of these support rollers 17, 17 placed approximately in the center are slightly higher than that of the support roller 18 placed on the opening 2a side, and as will be described later, the grain sorting machine 4 is When placed on the support rollers 17, 17, 18, the grain sorter 4 is tilted downward toward the opening 2a and supported at three points.

By the way, the grain sorting machine 4, as clearly illustrated in FIG.
It has a stone removal sorting plate 19 on the bottom surface formed by drilling a large number of small holes 19a that are deflected upward, and is formed with the top surface and front side surface open, and a gate on the rear side surface. 2
0 is provided on the wall so that it can be opened and closed freely. Further, flanges 4a, 4a are formed on both sides of the lower part of the grain sorting machine 4 in the front and back direction, respectively, and both flanges 4a.

4a is the pair of support rollers 17.1 mentioned above? It is placed on top. Further, an engaging portion 4b is attached to a suitable position on the flange 4a, and a shaft portion 16a pivotally supported at the tip of the aforementioned swing arm 16 is detachably engaged therewith.

The front and rear portions of the grain sorting machine 4 are provided with stone removal sorting plates 19.
Discharge guides 4c and 4d are formed at the front and rear ends of which the floor surfaces are continuous, and these guides 4c.

4d is inclined downward at a predetermined angle with respect to the stone removal sorting plate 19. Further, the guide groove 4e provided on the back surface of the front discharge guide 4C is also inclined downward at a predetermined angle with respect to the stone removal sorting plate 19, and is placed i3 on the support roller 18 described above. On the other hand, although the rear part of the grain sorting machine 4 is not shown in detail,
It is formed to taper toward the gate 20, and a rear discharge guide 4d is formed at a position beyond the gate 20 so as to be continuous with the inclined guide 2C.

The tip of the discharge guide 4c always protrudes beyond the opening 2a of the case 2, and between the discharge guide 4c and the machine body 3, there is a grain sorting machine 4, that is, a stone removal sorting board. A spring 21 is tensioned to pull the roller 19 into contact with the support rollers 17 and 18.

Furthermore, the gate 20 pivotally attached to the rear of the grain sorting machine 4 has a
An operating lever 20a that protrudes beyond an opening 2b formed in the case 2 is integrally attached, and a spring (not shown) is tensioned between the gate 20 and the grain sorter 4, so that the gate 20 is normally connected to the grain sorter 4. It is biased in the direction of closing the rear opening.

A storage box 22 is removably provided in the case 2 below the opening 2b, and is configured to store stones and the like that have been sorted by the sorting plate 19 via an inclined guide 2c.

Further, a hopper 5 is detachably attached to the upper part of the case 2, and a discharge port 5a formed at the lower end of the hopper 5 is positioned so as to face the vicinity of a gate 20 provided in the grain sorting machine 4. A discharge gate 23 is provided at the discharge port 5a,
The operating lever 23a, which is integrated with the discharge gate 23, protrudes from the case 2 and is positioned at the rear.

Next, the operation of the embodiment of the present invention will be explained. When the electric motor 6 is driven by operating an operation switch (not shown), the blower fan 8 also rotates in the direction of arrow A, and the fan 8 formed on the upper surface of the fuselage 3 Air is blown through the opening 3b toward the lower surface of the grain sorting machine 4, that is, toward the stone removal sorting plate 19. As a result, the air is guided to the small holes 19a formed in the stone removal sorting plate 19 and is blown obliquely upward and rearward.

Furthermore, as the rotation shaft 8b of the blower fan 8 rotates, its rotation speed is reduced and the second rotation shaft 12 also rotates, so the swing arm 16 has a stroke twice as much as the offset amount with respect to the rotation shaft 12. It reciprocates in the front and back direction with the operating range as follows. And, the shaft end 16a of the swing arm 16
is engaged with the engaging portion 4b of the grain sorter 4, so the grain sorter 4 also performs reciprocating motion while being guided by the support rollers 17 and 18. At this time, the guide groove 4e of the discharge guide 4c in which the support roller 18 is guided is formed by the stone removal sorting plate 19.
Grain sorting machine 4
The up-and-down movement at the front end accompanying the reciprocating motion is larger than the up-and-down movement at the rear end, resulting in an up-and-down reciprocating motion similar to the movement of a winnowing machine.

At this point, by pulling the operation lever 23a of the discharge gate 23 to open the discharge hole 5a of the hopper 5, the grain containing foreign matter such as stones can be fed to the grain sorting machine 4 little by little. As a result, the small hole 1 formed in the stone removal sorting plate 19
Due to the diagonally backward wind blowing out from 9a... and the vertical and reciprocating movement of the stone removal sorting plate 19, grains are formed in a constant layer on the stone removal sorting Fi 19 in accordance with the inclination of the stone removal sorting plate 19. After being accumulated in the upper part of this accumulation layer, only the grains with light specific gravity that are successively supplied to the upper part of this accumulation layer are moved forward in an avalanche shape,
It is discharged to the outside of the case 2 via the discharge guide 4c. on the other hand,
Foreign objects with high specific gravity, such as stones and metals, sink below the retention layer, are blown backward by air blown from the small holes 19a..., mix with the grains in the retention layer, and move forward while being stirred up and down. Since the stone moves in a substantially circular motion, re-sedimenting in the retention layer and being blown up backward again, it accumulates on the stone extraction sorting plate 19 facing directly below the discharge port 5a of the grain hopper 5 and moves forward. There's nothing to do.

When the grain supply from the hopper 5 runs out, the stone removal sorting board 19
A retention layer corresponding to the slope of the grain is formed, and the movement of grains is stopped. When the operating lever 20a is grasped and pulled upward, the gate 20 opens the rear part of the grain sorter 4 against the spring force, so that the air is guided to the opening 2b through the rear part of the grain sorter 4. A passage is formed, and the grains accumulated on the stone removal sorting plate 19 move while being blown upwards toward the rear, and are discharged through the inclined guide 2c and the opening 2b. At this time, the storage box 22 is pulled out (thereby, grains containing foreign objects such as stones can be reliably collected).

When the sorting work is completed in this way, the hopper 5 is removed from the case 2, the tip of the swinging arm 16 is lifted up, and the shaft end 16a is disengaged from the engaging part 4b of the grain sorting machine 4, and then If the spring 21 that pulls the grain sorter 4 into contact with the support rollers 17, 1B is removed, the grain sorter 4 can be taken out of the case 2.

The taken out grain sorting machine 4 is cleaned to remove any clogging that has occurred in the small holes 19a formed in the stone removal sorting plate 19, and can be attached to the machine body 3 by reversing the procedure. .

Note that in this embodiment, the rotating shaft 8b of the blower fan 8
Although the swing arm 16 is configured to reciprocate through the steps, the swing arm 16 can also be driven by rotating the rotary shaft 12 directly from the output shaft of the electric motor 6.

Further, in this embodiment, since the grain sorting machine 4 is configured to perform vertical and reciprocating motion, the tip shaft portion 16 of the swinging arm 16
a is supported by the swing arm 16 via a bearing,
When the grain sorting machine 4 performs only reciprocating motion, there is no relative rotational motion between the engaging portion and the tip shaft portion, so the bearing provided on the swing arm is not required.

Further, although the inclined guide 4c of the grain sorting machine 4 is formed to be inclined downward with respect to the stone removal sorting plate 19, it may be formed so as to be connected flush with it.

(Effects of the Invention) As described above, according to the present invention, the grain sorting machine is mounted on a support roller that is pivotally supported by the machine body, and the tip of the swinging arm is engaged with the engaging portion of the grain sorting gutter. Since they are only fitted together, they can be easily removed, and the cleaning work of the stone removal and sorting board can be easily performed without requiring any special tools.

According to the invention of claim 2, the front part of the grain selection gutter is formed to be inclined downward at a predetermined angle with respect to the stone removal part of the grain selection gutter, and the inclined part is placed on the support roller. Because there is
The reciprocating motion of the swinging arm makes it possible to give the grain sorting trough a vertical movement greater than the vertical movement in front of it, making it possible to perform the sorting work efficiently.

[Brief explanation of the drawing]

The drawings illustrate an embodiment of the present invention, and FIG. 1 is a front view of the grain sorting machine with the case front plate removed, and FIG. 2 is a rear view of the case with the back plate removed. Fig. 3 is a plan view showing the state with the hopper removed, Fig. 4 is Fig. 3 IV-
A sectional view taken along the rV line, FIG. 5 is an operation diagram showing the movement of the grain sorting trough, and FIG. 6 is a front view showing the external appearance of the grain sorting machine. 2...Case 4...Grain sorting gutter 8...Blower fan 17.18...Support roller 3...Body 5...Ho/7pa 16...Swinging arm 19... Stone removal sorting board Figure 2 Figure 5 Figure 6 Voluntary procedure amendment port February 70, 1989 Patent application No. 307224 of 1988 Name of the invention 4゜ Relationship with the person who makes amendments to the stone removal grain sorting machine case Patent Applicant Address: 265-2 Nagaoka, Okayama, Okayama Prefecture Name: Mizuta Kogyo Co., Ltd. Representative: Mizuta Kojin Agent Address: 4-4-18 Nishitenma, Kita-ku, Osaka 530 Telephone: (06) 304-8253 Address Umeke Details of target correction for Gichuo Building 6° correction 1. Page 14, line 7 to line 13 of the specification “Also...
...useful. ” to be deleted. 2. Specification page 15, line 5 to line 11 “Also...
··can. "Also, according to the invention of claim 2, the front part of the grain sorting machine is formed to be inclined downward at a predetermined angle with respect to the stone removal plate of the grain sorting machine, and the inclined part is Since it is mounted on support rollers, the reciprocating movement of the swinging arm makes it possible to give the grain sorter a larger vertical movement in front of it than in the rear, making sorting work more efficient. It is possible to do so.”

Claims (1)

[Scope of Claims] 1) An electric motor and a blower fan driven by the electric motor are housed in a case, and a machine body with a plurality of supporting rollers pivotally supported at spaced apart positions is fixed, and one ,
A grain sorting gutter having a stone removal sorting plate with a large number of small holes on the bottom surface is placed on the support roller, and a swing arm is attached to a rotating shaft that is rotationally driven at an appropriate speed by the electric motor. 1. A stone-pulling grain sorting machine, characterized in that it is eccentrically supported and configured such that the tip of the swinging arm is detachably engaged with an engaging portion provided in a grain sorting trough. 2) The grain sorting machine according to claim 1, wherein the front part of the grain sorting gutter is inclined downward at a predetermined angle with respect to the grain sorting plate and is supported by a front support roller. 3) The stone removal grain sorting machine according to claim 1 or 2, wherein the grain selection gutter has a front portion supported by a spring so as to be pressed against a support roller. 4) The stone-pulled grain sorting machine according to claim 1, wherein a gate that is always kept in a closed position is provided at the rear of the grain sorting gutter so as to be openable and closable. 5) The case is removably provided with a storage box for accommodating stones, etc. sorted by the grain sorting gutter, and an inclined guide is fixed above the storage box to guide stones, etc. from the grain sorting gutter to this storage box. The stone-pulled grain sorting machine according to claim 1, further comprising: