JPH0714508B2 - Sieve mesh device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention is a sieve screen capable of effectively preventing the occurrence of clogging of a punching plate during grain selection of an object to be treated such as grain. Regarding the frame device.

(Prior Art) Conventionally, a punching plate is vibrated, grains are put on the punching plate, large grains are left on the punching plate, and grains are small under the punching plate. It is well known to drop grains such as grains by dropping them. In this case, it is natural that the punching holes of the punching plate are clogged with grain particles. As means for eliminating this clogging, a brush is moved on the surface of the punching plate, or a large number of compartments are provided on the lower surface side of the punching board, and poles are enclosed in the compartments.
It has been used to utilize that the ball collides with the lower surface of the punching plate. However, the former has many problems such as many failures and the number of brushes quickly decreases, and the latter has a problem that the clogging cannot be completely eliminated due to the slow speed of the ball.

(Problems to be Solved by the Invention) The present invention has been devised in view of the above-mentioned conventional state of the art, and a coil spring is provided at the center of a large number of sections provided on the lower surface side of the punching plate to divide the sections. By forming a chamber and enclosing a plurality of elastic ball bodies in each divided compartment, it is possible to increase the jumping and rebounding speed of the elastic ball body by the reaction of the coil spring, and to completely prevent clogging of the punching plate. It is an object of the present invention to provide a sieve net frame device made possible.

(Means for Solving the Problem) The gist of the present invention is to provide a frame body formed of a pair of vertical frames and a pair of horizontal frames, a vertical rail and a horizontal rail that divide the interior of the frame body into a plurality of compartments, A coarse mesh for closing the lower surface side of the frame body and a punching plate for closing the upper surface side of the frame body and for selecting grains of the object to be processed are provided, and a coil spring is provided at the center of the partition Is divided into two to form divided compartments, and a plurality of elastic ball bodies are enclosed in each divided compartment.

If both ends of the coil spring are fixed to the horizontal frames facing each other, and a play hole is bored in the horizontal rail that forms the compartment, and the coil spring is loosely inserted in the play hole, the movement of the coil spring becomes large, and thus the elasticity is increased. The jumping speed of the ball also increases.

It is preferable to enclose three elastic ball bodies in the divided compartment. If the number of balls is four or more, the elastic ball bodies collide with each other to reduce the movement of the elastic balls, and if the number of balls is two or less, the effect of preventing clogging is reduced.

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

In the figure, 2 is a screen mesh frame device according to the present invention, which comprises a pair of vertical frames 4,4.
And a frame body 8 formed of a pair of horizontal frames 6, 6. The inside of the frame body 8 is divided into nine sections L by vertical rails 10, 10 and horizontal rails 12, 12. Of course, it is possible to increase or decrease the number of the vertical bars 10 and the horizontal bars 12 to appropriately increase or decrease the number of the sections L. Reference numeral 14 is a net having a coarse mesh that closes the lower surface of the frame 8. It is necessary that the mesh size of the mesh 14 is such that the elastic ball bodies 26 described later do not drop and that the grain or the like that has passed through the punching plate 16 can pass through. Reference numeral 16 is a punching plate that closes the upper surface side of the frame body 8 and selects the particles of the object to be treated.

A coil spring 18 is attached to the horizontal frames 6 and 6 so as to be located at the center of the compartment L and divide the compartment L into two to form a divided compartment 1. A play hole 20 is formed in a portion of the horizontal rail 12 through which the coil spring 18 passes, and a soft plastic tube 22 is loosely inserted in the play hole 20. twenty four
Is a stopper provided on the outer periphery of the tube 22 at a proper interval so as to prevent the tube 22 from falling off the horizontal rail 12 and allow the movement of the tube 22 between the stoppers 24. Is. With this configuration,
Since the movement of the coil spring 18 increases by that amount, the speed of the elastic ball body described later further increases.

Reference numeral 26 denotes an elastic ball body enclosed in the divided compartment l, and the elastic ball body 26 moves around and uniformly contacts the lower surface side of the punching plate 16 to select a grain to be processed by the punching plate 16. The clogging of (grains, mainly beans) is prevented and prevented. The elastic ball body 26 needs to have appropriate elasticity so that it can be suitably recoiled by the coil spring 18 and collide with the frame body 8 or the vertical rails 10 or the horizontal rails 12 to rebound. Balls, especially balls called super balls, are suitable. Further, the number of elastic ball bodies 26 enclosed in the divided compartment 1 is not particularly limited as long as it can be sufficiently moved and the clogging is eliminated, but normally three elastic ball bodies 26 are provided. Is preferably encapsulated. When the number of balls is four or more, the elastic ball bodies collide with each other to reduce the movement of the elastic balls, and when the number of ball balls is two or less, the clogging prevention effect is reduced.

Reference numeral 28 denotes a mounting piece provided in a portion of the vertical rail 10 located in the section L, which is provided so as to project from the vertical rail 10 for mounting the punching plate 16. A gap 30 is formed between the lower surface of the punching plate 16 and the upper end surface of the vertical rail 10 excluding the mounting piece 28. When a part of the elastic ball body 26 that jumps around enters the gap 30, the punching plate 16 in that part is inserted.
This has the effect of eliminating the clogging of. This gap 30
If there is not, the movement of the elastic ball body 26 is restricted to that extent, and the clogging elimination effect is reduced accordingly.

FIG. 5 shows an example of a grain selector 40 when grain selection of grains (for example, soybeans) is performed using the sieve net frame device 2 described above. In the figure, 42 is a raw material supply hopper, 44 is a hanger, 46 is a crankshaft, and M is a motor. 50 is a collecting chute for large diameter particles, 52 is a collecting chute for medium diameter particles, 54 is a collecting chute for small diameter particles, and 56 is a collecting chute for extremely small diameter particles. The illustrated example shows a case where a raw material is sorted into four particle sizes in a two-stage apparatus.

Then, the sieve net frame device 2 is attached via the hanger 44, and is oscillated in the front-rear direction by rotating the crankshaft 46, as shown in FIG.
The grains and the like put on the top can be sorted according to the particle size. As an example of attaching the sieve net frame device 2,
For example, four in two rows, for a total of eight. In the example of FIG. 5, the eight sieve screen frame devices 2 are vertically arranged in two stages, and the punching holes of the upper punching plate 16 are lower punching plates.
Larger than 16 punch holes. The upper punching plate 16 separates the large particle size and the small-medium particle size, and the lower punching plate 16 separates the medium particle size and the small particle size.

(Operation) With the above configuration, the operation will be described below.

When the motor M of the grain sorter 40 is turned on, the crankshaft 46 rotates, the sieve net frame device 2 vibrates in the front-rear direction, and the punching plate.
The grain size of grains or the like (for example, soybeans) put on the 16 is selected, and the grain size smaller than the punch hole p of the punching plate 16 falls, and the grain size larger than that is directly on the punching plate 16 surface. Run down. However, soybeans and the like having a particle size similar to that of the punch holes p of the punching plate 16 will be clogged in the punch holes p, and clogging or bean jam will occur. However, in the present invention, the lower surface of the punching plate 16 is provided with the compartment K provided with the coil spring 18 at the central portion, and the elastic ball bodies 26 are enclosed in each of the divided compartments 1. With the vibration of the device 2, the elastic ball body 26 jumps around in the divided compartment l, and the spring action of the coil spring 18 doubles the jumping speed of the elastic ball body 26 so that the elastic ball body 26 uniformly contacts or collides with the lower surface of the punching plate 16. , The elastic balls 26 even if grains having a particle size similar to that of the punch holes p are clogged in the punch holes p and are clogged or bean clogged.
Immediately after contact with the clog, the clogging or the bean clogging is eliminated.

(Effects of the Invention) As described above, according to the present invention, a coil spring is provided at the center of a large number of compartments provided on the lower surface side of a punching plate to form divided compartments. Since the ball body is enclosed, the jumping and rebounding speed of the elastic ball body is increased by the recoil of the coil spring, and the clogging of the punching plate can be completely eliminated and prevented, and grain selection of grains etc. can be performed very efficiently. It has the effect of enabling it.

[Brief description of drawings]

FIG. 1 is a partially cutaway top view showing an embodiment of the present invention,
2 is a sectional view taken along line II-II in FIG. 1, and FIG. 3 is II in FIG.
A cross-sectional view taken along line I-III, FIG. 4 is a cross-sectional explanatory view showing a state in which a coil spring is inserted into a horizontal rail, and FIG. 5 is a side view showing an example of a grain selector to which the present invention is applied. 2 ... Sieve mesh frame device, 4 ... Vertical frame, 6 ... Horizontal frame, 8 ... Frame body, 10 ... Vertical bar, 12 ... Horizontal bar, 14 ... Net, 16 ... Punching plate, 18 ...... Coil spring, 20 …… play hole, 22 …… tube, 26 …… elastic ball body, 40 …… grain selector.

Claims (3)

[Claims] 1. A frame body formed of a pair of vertical frames and a pair of horizontal frames, vertical rails and horizontal rails that divide the interior of the frame body into a number of sections, and an eye that closes the lower surface side of the frame body. A coarse mesh and a punching plate that closes the upper surface of the frame and selects the particles of the object to be processed are provided, and a coil spring is provided at the center of the partition to divide the partition into two to form a partitioned compartment. In addition, a sieve net frame device characterized in that a plurality of elastic ball bodies are enclosed in each divided compartment. 2. A coil spring is fixed to both ends of the vertical frame opposite to each other, an insertion hole is formed in a horizontal rail forming a section, and the coil spring is loosely inserted in the insertion hole. The sieve net frame apparatus according to item 1 above. 3. The sieve net frame apparatus according to claim 1, wherein three ball bodies are enclosed in the divided compartment.