JPH09122592A - Screen net frame of screen - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent fine particles from sticking on a bottom plate and broken pieces of a cleaner from being mixed in fine particles with simple constitution and to improve the service life of a cleaner by bending a bottom plate receiving fine particles downward at the end surface of a support member along an opening for fine particles and restraining it by cleaner dropping preventive beams. SOLUTION: A bottom plate 11 is extended toward the outside wall 7a side from a support member 10c. An extended part 11a is bent downwards at the end surface of the support member 10c, and is restrained by cleaner dropping preventive beams 13. A plurality of the cleaner dropping preventive beams 13 are horizontally provided across between the support member 10c and the outside wall 7a, and are inserted into holes 11b made in one side of the bottom plate 11. Between the bottom plate 11 and an inner frame, a cleaner is inserted, and the inner frame is fitted and fixed to an outer frame. In this constitution, flat countersunk head screws are eliminated on the upper surface of the bottom plate 11 and the end edge of the bottom plate 11 is made smooth to prevent fine particles from sticking to the bottom plate 11. The damage to the cleaner itself is prevented and broken pieces of the cleaner are prevented from being mixed in.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sieve net frame of a sieving machine for sorting powders such as wheat flour according to particle size.

[0002]

2. Description of the Related Art As a sieving machine for selecting powders and granules, particularly wheat flour, according to the particle size, a large number of sieve nets are stacked and hung from the ceiling or supported from the floor with a support rod to balance weights. A so-called plan shifter, a square shifter, or a junior shifter, which is a system of circularly moving in a horizontal plane by a driving means including an eccentric shaft and a driving shaft, is widely used.

The sieve net frame of the above-mentioned sieving machine is fitted with an inner frame that separates wheat flour into a net upper part (coarse powder) and a lower net part (fine powder), and the inner frame is fitted to separate the powder from the inner frame. It is composed of an outer frame that receives and supplies it to the next-stage screen screen frame. The screen screen frame having such a configuration will be described with reference to FIGS. 4 and 5.

FIG. 4 shows an inner frame of a conventional sieve mesh frame, and an inner frame 51 is a wooden frame side 5 which constitutes a rectangular frame body.
3 and a reinforcing rod 54 that is erected in a cross shape inside the frame body, a sieve mesh 55 is stretched.

The conventional outer frame 52 shown in FIG.
1, and a pair of outer walls 58 provided outside the inner wall 56 to form a fine powder opening 57.
And an outer wall 59 on the opposite side of the other pair, and a bottom plate 60 for guiding the fine powder that has passed through the sieve net of the inner frame to the fine powder opening 57. The bottom plate 60 is made of, for example, stainless steel, and is fixed to the vicinity of the inner wall 56 from the upper surface of the bottom plate 60 with a countersunk screw 61.

However, in the above sieve net frame,
Since the bottom plate 60 is fixed by the flat head screws 61 from the upper surface (see FIG. 6), the bottom plate 60 does not look good, and when used for a long time, the head portion 61a of the flat plate screws 61 is in a floating state. It was For this reason, fine powder adheres to the vicinity of the dish screw 60, and the fine powder is moved on the bottom plate 60 to open the fine powder.
The cleaner itself dropped to 7 is the head 6 of the plate screw 61.
1a and the edge of the bottom plate 60 may come into contact and be broken, and there is a risk that the fragments may be mixed into the fine powder.

By the way, in the embodiment of Japanese Patent Laid-Open No. 6-320111, "In the above-mentioned receiving plate 63, a rectangular stainless steel plate is screwed to the lower surface of three parallel wooden rods 64. It is configured as ... ". In such a sieve net frame, the receiving plate 63 is extended and bent so as to cover the side surface of the wooden rod body 64.
Since the bottom surface is screw-fastened, there is a drawback that it takes time and labor for the manufacturing process of the sieve net frame.

In view of the above problems, the present invention has a simple structure and does not allow fine powder to adhere to the bottom plate.
It is a technical object to improve the service life of the cleaner inserted between the bottom plate and the inner frame, and further to provide a sieve mesh frame of a sifter without the risk that the fragments of the cleaner are mixed in the fine powder. To do.

[0009]

In order to solve the above-mentioned problems, the present invention comprises a pair of a quadrangular inner frame with a sieve mesh and an outer frame to which the inner frame fits, the outer frame being A bottom plate that receives the fine powder that has passed through the sieve screen of the inner frame, a pair of fine powder openings provided to face each other to discharge the fine powder on the bottom plate to the outside of the frame, and the coarse powder on the sieve screen to the outside of the frame In the sieve screen frame of the sieving machine provided with an opening for coarse powder, the bottom plate is bent downward at the end surface of the support member along the opening for fine powder, and a plurality of cleaners are provided across the opening for fine powder. We have taken the technical measure of connecting with a preventive beam.

[0010]

[Operation and effect] Since the bottom plate is bent downward at the end face of the support member along the fine powder opening and is connected by a plurality of cleaner fall prevention beams that are laid across the fine powder opening, the bottom plate has a dish Since there are no screws and the edge of the bottom plate is smooth, fine powder does not adhere to the bottom plate near the flat head screw, and the cleaner itself is not damaged, and the fragments of the cleaner may mix into the fine powder. Is gone. Further, since the cleaner fall prevention beam is provided, even if the cleaner moves to the fine powder opening, it does not fall down.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT A preferred embodiment of the present invention will be described below with reference to FIG.

Reference numeral 1 denotes an inner frame having a sieve screen 2 stretched on its upper surface, which is surrounded on four sides by wooden frames 3a, 3b, 3c and 3d, and the frame 3a flows above the sieve screen 2. Coarse powder is the inner frame 1
A downward slope is provided to facilitate easy outflow. A reinforcing body 4 is provided on the inner frame 1, and a wire mesh 5 having a mesh coarser than that of the sieve mesh 2 is stretched on the lower surface of the reinforcing body 4. A cotton cleaner (not shown) or the like is inserted between the screen 2 and the wire net 5 so as to prevent clogging of the screen 2.

The outer frame 6 is surrounded by outer walls 7 on all sides,
Of the four outer walls, a pair of opposing outer walls 7a, 7c
Inner side walls 8a and 8b are respectively provided inwardly of the outer side walls 7a and 8b.
It is arranged so as to be parallel to 7c, and an opening 9a for fine powder is formed between the outer wall 7a and the inner wall 8a, and an opening 9b for fine powder is formed between the outer wall 7c and the inner wall 8b.

Reference numeral 10 is fixed to the outer wall 7, and its upper surface engages with the lower surface of the frame body 3 of the inner frame 1, and its lower surface receives fine powder from the sieve net 2 and fine powder openings 9a and 9b. It is a support member to which a bottom plate 11 for moving to is fixed. The sieve mesh 2 is provided between the support member 10a and the outer wall 7d.
A coarse powder opening 12 is formed for discharging the coarse powder moving above to the outside of the outer frame 6. And the fine powder opening 9
A plurality of cleaner fall prevention beams 13 are laid across a and 9b, for example, a resin cleaner (not shown) interposed between the bottom plate 11 and the wire net 5 falls into the fine powder openings 9a and 9b. To prevent

Next, a method of attaching the bottom plate 11 to the outer frame 6 will be described with reference to FIGS.

FIG. 2 is an enlarged perspective view of the fine powder opening 9a for explaining the mounting state of the bottom plate 11, and FIG. 3 is a sectional view taken along line AA of FIG. In FIG. 3, the inner wall 8
Immediately below a, the support member 1 is provided along the fine powder opening 9a.
0c is provided. The bottom plate 11 extends from the supporting member 10c toward the outer wall 7a side, and the extending portion 11a is bent downward at the end surface of the supporting member 10c, and is locked by a plurality of cleaner fall prevention beams 13. To do.
The plurality of cleaner fall prevention beams 13 are laterally bridged between the support member 10c and the outer wall 7a, and are fitted into holes 11b formed in one side of the bottom plate 11. Although not shown in this embodiment, the other opposite sides of the bottom plate 11 may be similarly attached.

The operation of the screen screen frame constructed as above will be described below.

A cleaner (not shown) is provided between the bottom plate 11 and the inner frame 1 in order to prevent fine powder from adhering to the bottom plate 11.
The inner frame 1 is fitted to the outer frame 6 by inserting. Then, when the powder and granules are supplied onto the sieve net 2, the fine powder that has passed through the sieve net 2 is received by the bottom plate 11, and the cleaner is allowed to fall to the fine powder opening 9 and discharged to the outside of the outer frame 6. At this time, there is no flat head screw on the upper surface of the bottom plate 11, and moreover, the bottom plate 1
Since the edge of No. 1 is smooth, fine powder does not adhere to the bottom plate 11, and the cleaner itself is free from defects, and there is no danger of cleaner fragments being mixed into the fine powder.

The coarse powder which does not pass through the screen 2 is
It moves above and is discharged to the outside of the outer frame 6 through the coarse powder opening 12 through the top of the frame 3a.

[Brief description of the drawings]

FIG. 1 is a development view showing a state in which an inner frame and an outer frame are fitted together.

FIG. 2 is an enlarged perspective view of a fine powder opening for explaining a mounting state of a bottom plate.

FIG. 3 is a sectional view taken along line AA of FIG. 2;

FIG. 4 is a perspective view showing an inner frame of a conventional sieve screen frame.

FIG. 5 is a perspective view showing an outer frame of a conventional sieve screen frame.

FIG. 6 is a sectional view taken along line BB of FIG. 5;

[Explanation of symbols]

 1 Inner Frame 2 Screen Mesh 3 Frame Body 4 Reinforcement Body 5 Wire Mesh 6 Outer Frame 7 Outer Side Wall 8 Inner Side Wall 9 Fine Powder Opening 10 Supporting Member 11 Bottom Plate 12 Coarse Powder Opening 13 Cleaner Fall Prevention Beam

Claims (1)

[Claims] 1. A bottom plate comprising a pair of a quadrangular inner frame having a sieve mesh and an outer frame to which the inner frame fits, the outer frame receiving fine powder passing through the sieve mesh of the inner frame. And a pair of fine powder openings provided to face each other to discharge the fine powder on the bottom plate to the outside of the frame, and a coarse mesh opening of a sieve machine having a coarse powder opening to discharge the coarse powder on the sieve mesh to the outside of the frame. In the frame, the bottom plate is bent downward at the end surface of the support member along the fine powder opening, and is connected by a plurality of cleaner fall prevention beams that are horizontally provided in the fine powder opening. Sieve screen frame.