JPH0353697Y2 - - Google Patents

Description

[Detailed description of the invention] (Field of industrial application) The present invention is mainly based on a mechanism for removing sand, etc. in an automatic grain washing machine to reliably remove gravel and other impurities from grains such as rice and beans. Regarding improvements.

(Prior art) This invention is registered as Utility Model No. 771573.
36020)).

Conventionally, when removing impurities such as soil and pebbles from the grains in an automatic grain washing machine, the grains carrying impurities are collided with a stream of water against a smooth disc-shaped mesh plate, and the impact is caused by the collision. At the same time, grains and contaminants are separated by peeling force, and at the same time, the grains are allowed to overflow with water due to the difference in specific gravity, and the contaminants are held on the mesh due to the difference in specific gravity, or they are allowed to settle through the mesh and be separated. Are known.

However, when it comes to foreign special grains such as Tianjin beans and red bamboo, which are imported agricultural products, unlike in Japan, due to differences in the adhesion of the soil, the adhesion of the grains, or the differences in specific gravity, they are not as smooth as the conventional grains. The cleaning method in which the particles collide with a shaped mesh plate had a defect in that it was not possible to achieve the desired degree of reliable separation.

In particular, when the difference in specific gravity between grains and impurities is close to each other, it is difficult to sort the grains using a conventional automatic grain washer.

(Problems to be Solved) However, the mechanism for removing sand, etc. in the automatic grain washing machine of the present invention was developed as a result of intensive research in view of the various deficiencies of the conventional grain washing machine as described above. This is a mechanism for removing sand, etc., that can reliably separate grains, and is particularly useful for cleaning and impurities on imported grains, which have greater adhesion to soil and grains than Japanese grains, and have a smaller difference in specific gravity. The purpose of the present invention is to provide a mechanism for removing sand, etc. in automatic grain washing, which has an extremely excellent sorting function.

Furthermore, the contour of the mesh plate has been improved, and the water flow entrained with grains and impurities that collides with the mesh plate is agitated, so to speak, to become turbulent and the flow path is changed, thereby making it possible to significantly improve the sorting effect. The purpose of this invention is to provide a mechanism for removing sand, etc. in a washing machine.

Another object of the present invention is to provide a mechanism for removing sand, etc. in an automatic grain washing machine, which can obtain the maximum effect of removing impurities such as sand by shortening the circulation time of grain-entrained water flow using a mesh plate with a special contour. .

(Means for Solving the Problems) In order to achieve the above-mentioned object, the mechanism for removing sand, etc. in the automatic grain washer according to the present invention has a mechanism for removing grains, etc., in the center of the grain tank A. A pressurized water pipe 3 having an opening 2 is installed upright, and a double inverted truncated conical receiver 7, 8 is provided with a concentric spacing at the top of the water pipe 3.
At the same time, the water and grains falling between the receiving tubes 7 and 8 are made to collide with the receiving tray 13 on which the mesh plate 11 is arranged, sand etc. are passed through the mesh plate 11 and separated, and the grain-containing water is transferred to the mesh plate 11. In an automatic washing machine that circulates and washes grains by overflowing from the convex edge 10 on the inner side of the plate into the peripheral gap 9 of the water pipe and returning into the tank A, a mesh plate 11 is located concentrically with the convex edge 10 and slightly outwardly. A mechanism for removing sand, etc. in an automatic grain washing machine, which is formed with a ring-shaped barbed net portion 14 lower than the convex edge 10 at a portion thereof, and a mesh plate 11 that is spaced outward from the ring-shaped barbed mesh portion 14. The present invention relates to a mechanism for removing sand, etc. in an automatic grain washer in which one to several annular convex surfaces 15 are formed on a portion thereof.

Next, a specific example of the mechanism for removing sand, etc. in the automatic grain washer according to the present invention will be explained with reference to the drawings.

The hydraulic automatic grain washing machine has a nozzle 1 for attaching a water supply pipe on the bottom, and a pressurized water pipe 3 is established by leaving a small opening 2 from the inlet, and a water receptacle 4 is connected to this on the periphery of the upper end. A drainage pipe 5 is installed, a grain discharge pipe 6 is installed on the bottom side wall, and a double inverted truncated conical receiver 7, 8 is installed at the tip of the water pipe 3 with an appropriate distance between them. The outer receiving tube 8 is removably fitted into the water pipe 3, and the water pipe 3 is centered around the water pipe 3.
It is attached to a saucer 13 provided with a gap 9 having an inner diameter larger than the outer diameter of.

A flange 16 is provided on the periphery of the gap 9 of the saucer 13.
is installed protrudingly.

On the bottom surface 8a of the saucer 13, a disc-shaped mesh plate 11 with an internal receiver 7 formed above is placed. A convex edge 10 that meets the inner peripheral surface and has a height equal to or less than the flange edge 16 is provided to protrude from the inner circumferential surface.

In a portion of the mesh plate 11 that is approximately 15 mm away from the convex edge 10, a ring-shaped barbed net portion 14 made of a net and protruding lower than the convex edge 10 is formed. One to several annular convex surfaces 15 are bulged at appropriate locations on the outer mesh plate 11.

Further, a cap body 12 is attached to the top of the external receiving tube 8.

To explain the operation, when desired grains are put into the grain tank A and water is supplied from the nozzle 1 on the lower side of the grain tank A to the water supply pipe connected directly to the water outlet, the grain tank The grains in A are washed and blown up inside the water pipe 3, and the impurities contained in the grains that hit the cap body 12 at the top are removed together with water into the double inverted conical receivers 7 and 8. The receiver 8 randomly passes through the gap and falls into the receiver 13 that fits on the outside of the receiver 8.
on the mesh of the wire mesh 11 on the bottom surface 8a of or on the wire mesh 11
The grains pass through the edge 8 of the receiver 8 and accumulate on the bottom surface.
The grains are successively returned to the grain tank A through the gap between the water supply pipe 3 and the water supply pipe 3 by passing over the flange 16 of the gap 9 in the center of the grain tank A. By repeating this operation, the grains are Small sand and foreign matter are removed.

In particular, the present invention has a convex edge 10 made of a metal plate of a constant width, and a convex edge 10 of the mesh plate 11 concentrically spaced outward by about 15 mm, instead of having the outline of the mesh plate 11 be a smooth disk shape as in the conventional case.
1 is formed with a ring-shaped protruding mesh part 14 projecting in the form of a wall lower than the convex edge 10, and in addition, an appropriate part of the mesh plate 11 is spaced outward from the ring-shaped protruding mesh part 14. One to several annular convex surfaces 15 are formed on the surface.

Therefore, the mixed flow of grains and water flowing down between the receiving tubes 7 and 8 collides with the part of the mesh plate 11 outside the annular projection mesh part 14, and the grains and pebbles are collected in a relatively large amount by the shovel. Contaminants fall on or through the mesh, and lightweight contaminants such as soil adhering to the grains are detached from the grains by collision. The washed grains flow over the convex edge 10 from the upper edge of the annular barbed mesh portion 14 together with the entrained water. The exfoliated lightweight contaminants follow the overflow flow, pass through the mesh of the annular projection mesh portion 14, and move to the space between the convex edge 10 and the annular projection mesh portion 14. Since this annular projection mesh portion 14 forms a dead space with weak flow, floating contaminants settle down and are removed by passing through the bottom mesh portion.

Furthermore, if the annular convex surface 15 is formed on the mesh plate 11, agitation is likely to occur when the mixed flow of grains and water collides with each other, resulting in even better exfoliation and separation of foreign substances. .

(Effects of the invention) In the present invention, the outline of the mesh plate 11 is not made into a smooth disk shape, but the mesh plate 1 is arranged concentrically with the convex edge 10 and slightly outwardly.
1, a ring-shaped protruding mesh part 14 having a height lower than the convex edge 10 is formed, and in addition, a mesh plate 11 that is spaced outward from the circular protruding mesh part 14 is formed.
Since the annular convex surface 15 is formed in an arbitrary part, the grains washed by the collision of the net plate 11 mainly flow over the upper edge of the annular projection net part 14 and the upper edge of the convex edge 10. Due to the shape, a dead space with relatively little flow is created between the annular barbed mesh portion 14 and the convex edge 10.

Therefore, the foreign matter exfoliated by the collision, especially the light foreign matter, follows the flow shape of the main grain in a floating state, passes through the mesh of the annular projection net portion 14, flows into the dead space, and settles in the dead space. This gives rise to a tendency for separation.

As a result, the impurity separation effect is significantly improved compared to the conventional method. Further, due to the annular convex surface 15, the mixed flow of grains and water that collides with the mesh plate 11 tends to be irregularly stirred at the time of collision, thereby further improving the effect of removing impurities.

Furthermore, the present invention has the characteristics of a simple structure and easy manufacture.

[Brief explanation of the drawing]

Figure 1 is a longitudinal sectional view of a washing machine equipped with the sand removal mechanism of the present invention, Figure 2 is a perspective view of the main parts of the present invention,
FIG. 3 shows partial cross-sectional views of important parts. 1... Nozzle, 2... Opening, 3... Water pipe, 4
...Overflow saucer, 5...Drainage pipe, 6...Grain discharge pipe, 7, 8...Inverted truncated conical receiver, 9...Gap, 10...Convex edge, 11...Mesh plate, 12 ... Cap body, 13 ... Saucer, 14 ... Ring-shaped barbed net portion, 1
5... Annular convex surface.

Claims (1)

[Claims for Utility Model Registration] 1. A pressurized water pipe 3 having a grain entrainment opening 2 is erected in the center of the grain tank A, and a double inverted pipe 3 with a concentric spacing is provided at the top of the water pipe 3. truncated conical receiver 7,
8 is installed, the water and grains falling between the receiving tubes 7 and 8 are made to collide with the receiving tray 13 on which the mesh plate 11 is arranged, and the sand and the like are passed through the mesh plate 11 and separated.
In an automatic washing machine in which grain-containing water overflows from the convex edge 10 on the inside of the screen plate into the peripheral gap 9 of the water pipe and returns to the tank A to circulate and wash the grains, a portion concentrically with the convex edge 10 and slightly outward is used. This mechanism for removing sand, etc. in an automatic grain washing machine is formed by forming a ring-shaped protruding mesh part 14 lower than the convex edge 10 in a part of the mesh plate 11 that is separated from the ridge. 2 Mesh plate 11 spaced outward from ring-shaped barbed mesh portion 14
2. A mechanism for removing sand, etc. in an automatic grain washing machine according to claim 1, wherein one to several annular convex surfaces 15 are formed in the portion.