JP2002361178A - Vibrating screen device having member for preventing disassembling and falling of screen - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a means for preventing the disassembling and falling of a screen end part in a vibrating screen device in which a screen fitting part is set inside a body frame. SOLUTION: In the vibrating screen device in which the screen fitting part is set inside the body frame, an endless belt-shaped falling preventing member is formed below the end part of the screen and along the inside whole circumference of the body frame in order to prevent the disassembling and falling of the end part of the screen.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vibrating sieve device in which a mounting portion of a sieve mesh is provided inside a main body frame, and in particular, a vibrating sieve having means for preventing the end of the sieve mesh from falling off. Related to the device.

[0002]

2. Description of the Related Art Conventionally, sieves have been used for adjusting the particle size of powder and removing foreign substances. One of them is a vibrating sieve device. A vibrating sieve device usually has a main body frame vibrated by vibration generating means and a sieve net attached to the main body frame, and the powder put on the sieve net has a certain size due to vibration. Only fall through the sieve.

[0003] As a method of attaching a sieve net to the vibrating sieve device, there are known a method in which a mounting portion of the sieve mesh is provided outside a main body frame and a method in which a mounting portion is provided inside. The sieve mesh is a mesh knitted with metal or synthetic fiber, which is cut out according to the size of the vibrating sieve to use. In this case, the loosening dropped from the end of the sieve mesh due to violent vibration, and was sometimes mixed into the powder.

[0004]

SUMMARY OF THE INVENTION The present invention relates to a vibrating sieve apparatus having a sieve mesh mounting portion inside a main body frame.
Be careful not to drop the end of the sieve mesh and mix it into the powder product.
It is an object of the present invention to provide a means for preventing the falling of the unraveling.

[0005]

SUMMARY OF THE INVENTION The present invention relates to a vibrating sieve device in which a mounting portion for a sieve mesh is provided inside a main body frame. ,And,
A vibrating sieve device characterized in that drop prevention means is provided along the entire inner periphery of the main body frame. In the present invention, the unraveling (raveling or loosening) means that a cord piece or a fiber piece generated in a cut portion of the sieve mesh is dropped when the sieve mesh is cut or abraded due to severe vibration of the vibrating sieve device. A thing.

[0006]

BEST MODE FOR CARRYING OUT THE INVENTION (Vibrating sieve device) The vibrating sieve device to which the present invention is applied includes all vibrating sieve devices of a type in which a mounting portion for a sieve mesh is provided inside a main body frame. Usually, the vibration sieve generating means is installed at the lower part of the main body frame, but the installation position of the vibration generating means is not directly related to the object of the present invention, and it may be located anywhere with respect to the main body frame. The main body frame of the vibrating sieve device usually has an input portion at the upper part, and an upper frame and a lower frame are connected to each other below by a fastening band or the like. The shape of the body frame is cylindrical, box-shaped, etc.
Any shape may be used. The sieve mesh is usually knitted with steel cord, polyamide fiber, polyester fiber, glass fiber, or the like, and is not particularly limited in shape and material.

(Attachment of Sieve Mesh) Usually, an attachment frame having a plurality of bolt holes is provided along the entire inner surface of the lower end of the upper frame of the body frame. The sieve mesh cut together is placed, and is clamped and fixed with bolts and nuts at a plurality of positions while being sandwiched by the holding members. The mounting portion includes all means having the same functions as those described above.

(Drop prevention means) The drop prevention means is means for preventing the looseness from dropping from the end of the sieve net, and is provided along the entire inner periphery of the main body frame below the end of the sieve net. The fall prevention means is usually an endless belt-shaped member, and has an annular shape or a rectangular belt shape according to the shape of the main body frame. The width of the band is required to be a gap where the loosening falls from the end of the screen, that is, a width that can completely close the space between the screen attachment and the inner surface of the main body frame. By completely closing the falling gap,
The unraveling can be prevented from being mixed into the lower powder product. As the fall prevention means, any means can be used as long as it can receive the falling of the sieve mesh on the way, and in addition to an endless belt-shaped member, any other means having the same function are included. As a material of the fall prevention means, a metal such as steel, an elastic body such as neoprene (registered trademark), and other various synthetic resins can be used, and there is no particular limitation. The method of attaching the endless belt-shaped fall prevention member is usually fixed by a sieve mesh attaching portion and a joint portion between the upper frame and the lower frame. In this case, the sieve mesh is fixed between the holding member (for example, a concave ring) and the nut below the sieve mesh at the portion where the sieve mesh is attached, and the elastic member is inserted and sandwiched at the joint between the upper frame and the lower frame. Of course,
Any mounting method can be used as long as it can close the space between the screen mesh mounting portion and the inner surface of the main body frame. The endless belt-shaped fall prevention member is usually detachably attached to the main body frame, but may be fixed to the main body frame by means such as adhesion.

[0009] (Recovery of the falling material of the sieve mesh which has been prevented by the fall prevention means) After the sieve operation is completed, the upper frame and the lower frame of the vibrating screen device are appropriately separated and dismantled. By removing the bolts and nuts of the mounting part, it can be easily collected.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS. FIG. 1 is a schematic sectional view of a side surface showing a main body frame portion of a vibrating sieve device according to one embodiment of the present invention.
FIG. 4 is a cross-sectional view of a mounting portion of a sieve net and a fall prevention member. FIG.
In the figure, 1 indicates a cylindrical main body frame, and an upper frame 4 and a lower frame 5 are overlapped. Above the upper frame 4 is the upper lid 3, and in the center is the powder inlet 2
Having. A wire mesh 6 for a sieve is stretched under the upper frame 4, and a mesh tapping tray 16 (not shown in FIG. 1) is provided below the mesh 6. A tapping ball 7 is placed movably. The powder transferred from the mixing tank and introduced from the introduction port 2 is subjected to vibration control on the wire mesh 6 to adjust the particle size and remove foreign matter. At that time, the tapping ball 7 on the mesh hitting tray 16 jumps due to vibration and collides with the upper wire mesh 6, thereby serving to prevent clogging of the wire mesh. The mesh tapping tray 16 has a large number of holes, and the powder that has passed through the sieve falls downward through these holes. The powder that has passed through the sieve is taken out as a product, and nonstandard products and foreign substances remaining on the wire mesh are taken out as fine products.

FIG. 2 is an enlarged sectional view of a portion surrounded by a circle in FIG.
It is. A mounting frame 9 having a large number of bolt holes is provided below the inner surface of the upper frame 4. The wire mesh packing 13, the wire mesh for sieve 6, the wire mesh fastening concave ring 11, the drop prevention member 8, and the mesh tapping tray 16 are sequentially stacked, and fastened by the wire mesh fastening bolt 10. The end of the wire mesh 6 protruding from the concave ring 11 is held down by a wire mesh holding ring 12. The fall prevention member 8 has an annular shape, and its outer peripheral portion is inserted into a connection portion between the upper frame 4 and the lower frame 5, inserted through the middle frame packing 14, and fixed with the middle frame tightening band 15.

[0012]

By attaching the drop prevention means of the present invention to the vibrating sieve device, even if the end of the sieve mesh falls, the falling pieces are received by the drop prevention means and mixed into the powder product. do not do.

[Brief description of the drawings]

FIG. 1 is a schematic side sectional view showing a main frame portion of a vibrating sieve device according to one embodiment of the present invention.

FIG. 2 is a sectional view of a mounting portion of a sieve net and a fall prevention member.

Claims (5)

[Claims] 1. A vibrating sieve device in which a mounting portion of a sieve mesh is provided inside a main body frame. A vibrating sieve device comprising a fall prevention means provided along a circumference. 2. A vibrating sieve apparatus according to claim 1, wherein said fall prevention means is an endless belt-shaped fall prevention member. 3. The vibrating sieve device according to claim 1, wherein the fall prevention means is an annular member. 4. The vibrating sieve apparatus according to claim 1, wherein the fall prevention means is fixed by a sieve mesh attaching portion and a connecting portion between the upper frame and the lower frame. 5. The fixing device according to claim 5, wherein the drop prevention means is sandwiched between the holding member and the nut below the sieve mesh at the sieve mesh mounting portion, and is sandwiched between the upper frame and the lower frame via an elastic member. The vibrating sieve device according to claim 1, wherein: