JP2008018375A - Screen unit of multilayer screen device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a screen unit in which foreign matter is not mixed, the crimp net of which can be cleaned easily and which constitutes one layer of a multilayer screen device. <P>SOLUTION: The screen unit constituting one layer of the multilayer screen device is characterized in that the crimp net to be screwed in an inner frame through a fastener is separated from and made independent of the inner frame. A frame member is preferably arranged in the whole peripheral part of the crimp net to be used. A cleaner fall preventing member can horizontally be arranged in a fine powder opening of an outer frame in a row. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a sieve unit constituting one layer of a multilayer sieve device.

As a sieve device for wheat flour or the like, a sieve device in which a large number of sieve frames such as a square shifter are stacked is used.
The sieve frame includes an inner frame in which a sieve screen is stretched and an outer frame that holds the inner frame and forms a path for separating and transferring the powder sieved by the sieve mesh.
A crimp net is stretched at the bottom of the inner frame, and a cleaner placed on the crimp net moves freely to hit the screen to prevent clogging of the screen (for example, Patent Document 1). reference).

JP-A-6-320111

The crimp net is fixed to a wooden or metal inner frame with a screw through a metal fastener.
When the crimp net is fixed to the inner frame, since the inner frame and the cleaner are integrated, the handling is convenient, but there are the following problems.
The fasteners and screws are on the side on which the powder that has passed through the sieve mesh moves, so if they fall off, they will be mixed in as foreign matter.
In addition, an adhesive is used to stretch the sieve mesh on the inner frame, but the adhesive or the sieve mesh may adhere to the crimp mesh, and the crimp mesh and the sieve mesh form a closed space. Therefore, since it is not easy to remove the adhesion, it is not easy to inspect it, and if the adhesive or the screen ends are removed, they are mixed as foreign matter.
Furthermore, since the crimp net is fixed to the wooden or metal inner frame, it cannot be easily cleaned.
Accordingly, an object of the present invention is to provide a sieving unit that can easily clean a crimp net without the above-mentioned contamination.

As a result of intensive research to achieve the above-mentioned object, the present inventor has separated the crimp net, which is screwed to the inner frame via the clasp, from the inner frame and becomes independent, so that the clasp and the screw can be separated. The present inventors have found that it is possible to easily clean the crimp net by eliminating foreign matters and have completed the present invention.
Accordingly, the present invention is (1) a sieve unit constituting one layer of a multilayer sieve device, and (A) an outer wall formed by plate members having the same height so that the planar shape is rectangular or square; An inner wall for fitting an inner frame formed by a plate-like member having the same height as the plate-like member inside the outer wall, and the outer wall provided at four corners of the outer wall, the inner wall, and the outer wall; Fine powder openings formed on one side or both opposite sides of the outer wall for dropping fine powder that has passed through a sieve mesh penetrating vertically formed by columnar members of the same height, and upper and lower middles on the inner side of the inner wall A holding plate for fine powder provided at a position, a discharge port for discharging the fine powder provided on one or both sides of the inner wall to the opening for fine powder, and holding a crimp net provided on the receiving plate The fine powder opening is formed by the member, the receiving plate, the inner wall, and the outer wall. A coarse powder opening penetrating vertically to drop coarse powder that does not pass through a sieve mesh formed on the other side different from the side that is formed, and the coarse powder on the coarse powder opening side of the crimp net holding member An outer frame provided with a convex member for locking the inner frame provided on an upper portion of the crimp net holding member in contact with the opening for use, (B) a crimp net having a rectangular planar shape, and (C) an upper surface of the frame body A sieve unit, and an inner frame having a bottom surface provided with a convex member for fitting between the outer frame convex member and the crimp net.
(2) A sieving unit constituting one layer of the multi-layer sieving device, (A) an outer wall formed by a plate-like member having the same height so that the planar shape is rectangular or square, and inside the outer wall An inner wall for fitting an inner frame formed by a plate-like member having the same height as the plate-like member, and a columnar shape having the same height as the outer wall provided at four corners of the outer wall, the inner wall, and the outer wall Fine powder opening formed on one side of the outer wall or both opposing sides for dropping fine powder that has passed through the upper and lower sieve mesh formed by the member, and fine powder provided at the upper and lower intermediate positions inside the inner wall Receiving plate, a discharge port for discharging the fine powder provided on one side or opposite sides of the inner wall to the fine powder opening, a crimp net holding member provided on the receiving plate, and the receiving plate Different from the side where the fine powder opening is formed by the inner wall and the outer wall. A coarse powder opening penetrating vertically to drop coarse powder that does not pass through a sieve mesh formed on the other side, and the crimp in contact with the coarse powder opening on the coarse powder opening side of the crimp net holding member An outer frame provided with a convex member having a stepped shape by notching an upper corner portion not in contact with the coarse powder opening for locking the inner frame provided on an upper portion of a net holding member; (B) It is a sieve unit provided with a crimp net having a rectangular planar shape, and (C) an inner frame in which a sieve mesh is stretched on the upper surface of the frame.
(3) A sieve unit constituting one layer of the multilayer sieve device, (A) an outer wall formed by a plate-like member having the same height so that the planar shape is rectangular or square, and an inner side of the outer wall An inner wall for fitting an inner frame formed by a plate-like member having the same height as the plate-like member, and a columnar shape having the same height as the outer wall provided at four corners of the outer wall, the inner wall, and the outer wall Fine powder opening formed on one side of the outer wall or both opposing sides for dropping fine powder that has passed through the upper and lower sieve mesh formed by the member, and fine powder provided at the upper and lower intermediate positions inside the inner wall Receiving plate, a discharge port for discharging the fine powder provided on one side or opposite sides of the inner wall to the fine powder opening, a crimp net holding member provided on the receiving plate, and the receiving plate Different from the side where the fine powder opening is formed by the inner wall and the outer wall. A coarse powder opening penetrating vertically for dropping coarse powder that does not pass through a sieve mesh formed on the other side, and the inner portion in contact with the coarse powder opening on the coarse powder opening side of the crimp net holding member. A sieving unit comprising an outer frame having a frame member for locking the frame, (B) a crimp net having a rectangular planar shape, and (C) an inner frame in which a sieving net is stretched on the upper surface of the frame. .
(4) The sieve unit characterized in that a frame member is provided on the entire peripheral edge of the crimp net.
(5) The sieving unit according to the present invention, wherein a cleaner drop prevention member is provided horizontally in a row in the fine powder opening of the outer frame.

According to the invention of (1), since the configuration of the outer frame is common to the conventional sieve unit, it can be used with the conventional sieve unit, and the equipment can be changed sequentially.
According to the inventions of (2) and (3), since the inner frame has no convex portion, the inner frame is hardly damaged.
According to the invention of (4), the crimp net is not easily damaged, and when the sieve unit is assembled, the upper surfaces of the inner frame and the outer frame are easily formed in the same plane, and there is little powder leakage or the like.
According to the invention of (5), the discharge efficiency is enhanced by providing the cleaner for discharging the fine powder.

  There is no contamination of the fasteners and screws that have secured the crimp net to the inner frame, and the crimp net can be easily cleaned.

Hereinafter, the present invention will be described in detail.
The sieve unit of the present invention is characterized in that the crimp net is made independent of the inner frame.
Therefore, the conventional inner frame, the inner frame of the present invention, and the crimp net will be described first.

FIG. 2 is a perspective bottom view of a conventional inner frame.
A crimp net 2 is fixed to the frame body 1 with a screw 4 via a fastener 3.
The crimp net 2 is formed, for example, from a metal having a diameter of about 2 mm in a lattice shape having an opening of about 10 mm.
Since the crimp net has a thickness of about 4 mm, an edge member 5 is provided around the frame to protect the crimp net and allow the inner frame to be stably fitted to the outer frame.
If the height of the inner frame is not stable, when the outer frames are stacked, the inner frame cannot be pressed and adhered at the bottom of the outer frame, causing powder leakage.

FIG. 3 is a perspective bottom view of the inner frame of the present invention (1).
The frame 6 is provided with a first convex member 7 on the side on the coarse powder opening side.
When the inner frame and the outer frame are fitted together, the first convex member 7 is fitted between the crimp net frame member and the second convex member 21 of the outer frame to fix the crimp net 40 and the inner frame 50. To do.
A seal member 8 is provided on the bottom surface of the frame 6 outside the convex member 7.
In the case of the inner frame of the present invention of the above (2) and (3), the convex member 7 is not provided.

FIG. 4 is a perspective plan view of the inner frame of the present invention.
A sieve net 9 is stretched over the frame 6 with an adhesive.
The upper surface of the conventional inner frame is the same as the inner frame of the present invention.

FIG. 5 is a perspective plan view of the crimp net of the present invention (4).
The frame member 10 is fixed to the crimp net 2 by welding.
The frame member 10 has such a thickness that the upper surface of the inner frame is flush with the outer frame when the inner frame and the crimp net are fitted to the outer frame.
Even when there is no frame member, the crimp net is knitted so that it does not come apart, but the strength of the inner frame is increased by the frame member, and the height can be adjusted reliably.
In the case where there is no frame member, it is preferable that the mesh is thickened so that it does not become loose, the tip of the mesh is covered with resin or the like, and the tip is rounded so as not to be damaged.

Next, the outer frame will be described.
The outer frame of the present invention (1) is efficient because the conventional outer frame can be used as it is.
FIG. 6 is a perspective plan view of the outer frame.
An outer wall 12 is formed to be square by the first plate-like member 11 having the same height.
The outer wall 12 of the present invention is not limited to a square but may be a rectangle.
An inner wall 14 for fitting an inner frame 50 formed by the second plate member 13 having the same height as the first plate member 11 is formed inside the outer wall 12.
On both sides of the outer wall 12, fine powder that has passed through a screen mesh penetrating vertically formed by the outer wall 12, the inner wall 14, and the columnar member 15 having the same height as the outer wall 12 provided at the four corners of the outer wall 12 falls. For this purpose, a pair of fine powder openings 16 is formed.
The fine powder opening 16 of the outer frame of the present invention may be on either one side or on both sides facing each other.

On the inner side of the inner wall 14, a fine powder receiving plate 17 is provided at an intermediate position between the upper and lower sides.
By providing the fine powder receiving plate 17 at the upper and lower intermediate positions, when the sieve unit is laminated, the bottom mesh of the fine powder receiving plate 17 and the sieve mesh of the lower sieve unit and the inner wall 14 do not pass through the sieve mesh. A coarse powder transfer path is formed.

The inner wall 14 is provided with a discharge port 18 for discharging the fine powder that has passed through the sieve mesh and moved to the fine powder receiving plate 17 to the fine powder opening 16.
The discharge port 18 of the present invention may be on one side or on both sides facing each other.
The height of the lower portion of the discharge port 18 is the same height as the upper surface of the fine powder receiving plate 17.

A holding member 19 for the crimp net 40 is provided on the fine powder receiving plate 17.
In the example shown in FIG. 6, the holding members 19 are provided at three locations.
In the outer frame of the present invention (1), a convex member 21 for locking the inner frame is provided on the upper portion of the holding member 19 in contact with the coarse powder opening 20.

The outer frame of the present invention (2) will be described with reference to FIG.
FIG. 9 is a schematic end view for explanation in which the coarse powder opening portion of the outer frame is cut at right angles to the longitudinal direction of the coarse powder opening.
As shown in FIG. 9, the height of the locking member 61 is in the range higher than the height of the crimp net and lower than the height of the outer frame, and when the crimp net is locked, the height is the same as or slightly higher than the crimp net. The corner is cut out to form a stepped shape.
Intrusion of coarse powder is prevented by the notched portion having a stepped shape and the portion in contact with the inner frame.
In this case, the length of the side of the inner frame is shorter than the inner frame of the present invention (1).
Further, there is no gap between the crimp net and the locking member 61 for fitting the convex member in the invention of (1).

The outer frame of the present invention (3) will be described with reference to FIG.
FIG. 10 is a schematic end view for explanation in which the coarse powder opening portion of the outer frame is cut at right angles to the longitudinal direction of the coarse powder opening.
The outer frame of the present invention (3) includes a frame member 71 for locking the inner frame on the coarse powder opening side of the holding member 19 as shown in FIG.
The frame member 71 is provided over the entire width of the drop opening so that coarse powder does not enter from the drop opening.
There is no gap between the crimp net 40 and the frame member 71 so that the convex member in the invention of (1) is inserted.

As shown in FIG. 6, the coarse powder that does not pass through the sieve mesh formed on the other side different from the side where the fine powder opening 16 is formed by the fine powder receiving plate 17, the inner wall 14 and the outer wall 12. A coarse powder opening 20 penetrating vertically is formed for dropping.
The fine powder opening 16 is provided with a cleaner dropping prevention member 23 provided in a horizontal line.
The cleaner fall prevention member 23 is provided when the first cleaner is used, but is unnecessary when the first cleaner is not used.
FIG. 7 is a perspective bottom view of the outer frame, and FIG. 8 is a perspective plan view of the sieve unit fitted with the inner frame.
When the sealing member 24 indicated by the oblique lines is laminated with the sieve unit, the coarse powder dropping path and the fine powder dropping path are formed by pressing against the portion indicated by the oblique lines in FIG.

Next, the method of assembling the sieve unit of the present invention will be described with reference to the developed view of the sieve unit in FIG.
First, the first cleaner 31 is movably mounted on the fine powder receiving plate 17 of the outer frame 30.
The shape of the cleaner 31 may be a rectangle or a triangle.
Since the first cleaner is not necessarily required, this step is not necessary when the first cleaner is not used.
Next, the crimp net 40 is fitted to the inner wall 14 of the outer frame 30.
The crimp net 40 forms a space so that the fine powder that has passed through the sieve mesh can move to the discharge port 18 with the fine powder receiving plate 17 by the holding member 19 of the crimp net.
In the present invention of the above (1), the crimp net 40 has a gap with the convex member 21 for locking the inner frame of the outer frame so that the first convex member 7 of the inner frame 50 can be fitted. Mating.
In the present invention of the above (2) and (3), the crimp net 40 is fitted without a gap.
Next, the second cleaner 32 is movably mounted on the crimp net.
The second cleaner is arranged so that there is at least one second in the closed space formed by the frame body 6 of the inner frame.
Next, the inner frame 50 is fitted to the inner wall 14 of the outer frame 30.
In the present invention (1), fitting is performed so that the first convex member 7 of the inner frame 50 is fitted into the gap between the crimp net 40 and the second convex member 21 of the outer frame.
As shown in FIG. 8, the sieve unit fitted with the inner frame has the same mesh as the inner frame, the outer wall 12 and the inner wall 14 of the outer frame, and the portion indicated by the oblique line 25 in FIG. When they are stacked, they are sealed by pressure contact with the sealing member 24 at the bottom of the outer frame.

Next, the usage method of the sieve unit of this invention is demonstrated.
The sieve unit of the present invention can be used similarly to the sieve unit of the conventional multilayer sieve apparatus.
The sieve unit of the present invention is laminated so that the coarse powder opening 20 is positioned on the upper side of the opposite side of the coarse powder opening 20 of the lower sieve unit.
As a result, the coarse powder that has not passed through the sieve mesh falls to the sieve mesh of the lower sieve unit as shown by arrow B in FIG. 8, and the coarse powder that has fallen as shown by arrow A in FIG. Can be netted.
The coarse powder that has not passed through the sieve mesh of the present invention includes fine powder that should pass through the sieve mesh.
The fine powder that has passed through the sieve mesh falls along the fine powder dropping path formed by the fine powder opening 16 as shown by arrow C in FIG.
The fine powder is discharged or supplied to another sieving unit through a special frame for changing the path and sieved.

It is a perspective developed view which shows the structure of the sieve unit of this invention. It is a perspective bottom view of the conventional inner frame. It is a perspective bottom view of the inner frame of the present invention. It is a perspective plan view of the inner frame of the present invention. It is a perspective top view of the crimp net | network of this invention. It is a perspective plan view of the outer frame of the present invention. It is a perspective bottom view of the outer frame of the present invention. It is a perspective plan view of the sieve unit of the present invention. It is a figure explaining the other example of the inner frame latching state by the side of the opening part for coarse powder of this invention. It is a figure explaining the other example of the inner frame latching state by the side of the opening part for coarse powder of this invention.

Explanation of symbols

1 Frame
2 Crimp net
3 Fastener
4 screw
5 Edge member
6 Frame
7 First convex member
8 Seal member
9 Sieve
10 Frame member
11 First plate member
12 Exterior wall
13 Second plate member
14 Inner wall
15 Columnar member
16 Fine powder opening
17 Fine powder backing plate
18 outlet
19 Holding member
20 Coarse powder opening
21 Second convex member
23 Cleaner fall prevention member
24 Seal material
30 outer frame
31 First cleaner
32 Second cleaner
40 crimp net
50 Inner frame
61 Locking member
71 Frame member

Claims (5)

A sieve unit constituting one layer of the multilayer sieve device,
(A) An outer wall formed by a plate-like member having the same height so that the planar shape is rectangular or square, and an inner wall formed by a plate-like member having the same height as the plate-like member inside the outer wall The fine powder that has passed through the upper and lower sieving nets formed by the inner wall for fitting the frame and the columnar member having the same height as the outer wall and the outer wall provided at the four corners of the outer wall is dropped. An opening for fine powder formed on one side of the outer wall or on opposite sides, a receiving plate for fine powder provided on the inner wall at an upper and lower intermediate position, and the one provided on one side of the inner wall or opposite sides The fine powder opening is formed by a discharge port for discharging fine powder to the fine powder opening, a holding member for a crimp net provided on the receiving plate, the receiving plate, the inner wall, and the outer wall. To drop coarse powder that does not pass through a sieve mesh formed on the other side of the side A coarse powder opening penetrating vertically, and an inner frame provided on an upper portion of the crimp net holding member in contact with the coarse powder opening on the coarse powder opening side of the crimp net holding member. The outer frame (B) provided with a convex member (B) has a rectangular shape with a rectangular planar shape (C). A sieve screen is stretched on the upper surface of the frame, and the bottom surface is fitted between the outer frame convex member and the crimp net. A sieve unit provided with an inner frame provided with a convex member. A sieve unit constituting one layer of the multilayer sieve device,
(A) An outer wall formed by a plate-like member having the same height so that the planar shape is rectangular or square, and an inner wall formed by a plate-like member having the same height as the plate-like member inside the outer wall The fine powder that has passed through the upper and lower sieving nets formed by the inner wall for fitting the frame and the columnar member having the same height as the outer wall and the outer wall provided at the four corners of the outer wall is dropped. An opening for fine powder formed on one side of the outer wall or on opposite sides, a receiving plate for fine powder provided on the inner wall at an upper and lower intermediate position, and the one provided on one side of the inner wall or opposite sides The fine powder opening is formed by a discharge port for discharging fine powder to the fine powder opening, a holding member for a crimp net provided on the receiving plate, the receiving plate, the inner wall, and the outer wall. To drop coarse powder that does not pass through a sieve mesh formed on the other side of the side A coarse powder opening penetrating vertically, and an inner frame provided on an upper portion of the crimp net holding member in contact with the coarse powder opening on the coarse powder opening side of the crimp net holding member. Outer frame (B) provided with a convex member having a stepped shape by notching the upper corner not in contact with the coarse powder opening (B) A screen net is a rectangular shape. Sieve unit with an inner frame. A sieve unit constituting one layer of the multilayer sieve device,
(A) An outer wall formed by a plate-like member having the same height so that the planar shape is rectangular or square, and an inner wall formed by a plate-like member having the same height as the plate-like member inside the outer wall The fine powder that has passed through the upper and lower sieve mesh formed by the inner wall for fitting the frame, and the columnar member of the same height as the outer wall and the outer wall provided at the four corners of the outer wall is dropped. An opening for fine powder formed on one side of the outer wall or on opposite sides, a receiving plate for fine powder provided on the inner wall at an upper and lower intermediate position, and the one provided on one side of the inner wall or opposite sides The fine powder opening is formed by a discharge port for discharging fine powder to the fine powder opening, a holding member for a crimp net provided on the receiving plate, the receiving plate, the inner wall, and the outer wall. To drop coarse powder that does not pass through a sieve mesh formed on the other side of the side The outer frame (B) plane provided with a coarse powder opening penetrating vertically and a frame member for locking the inner frame in contact with the coarse powder opening on the coarse powder opening side of the crimp net holding member A sieve unit having an inner frame in which a sieve mesh is stretched on the upper surface of a rectangular crimp net (C) frame.   The sieving unit according to any one of claims 1 to 3, wherein a frame member is provided on the entire peripheral edge of the crimp net. The sieve unit according to any one of claims 1 to 4, wherein a cleaner drop prevention member is provided horizontally in a row in the fine powder opening of the outer frame.

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