JPH0858883A - Dust collection silo discharge assist device - Google Patents

Abstract

(57) [Abstract] [Purpose] In a dust collecting silo provided with a transverse screw conveyor, the weight of wood chips acting on the conveyor is reduced as much as possible. [Structure] A discharge port 14 for discharging dust inside is provided at the bottom of a housing 11, and a discharge port 14 is provided above the discharge port 14.
When the traverse type screw conveyor 20 movable above is provided, the traverse body 35 which is located above the traverse type screw conveyor 20 and traverses the casing 11 is provided inside the casing 11. Specifically, the cross body 35 is formed of a wire-like body such as a string or a string, or a structure such as an angle material or a channel material. Further, the cross body 35 may be arranged between the opposite surfaces of the inner surface of the housing, or may be arranged between the adjacent surfaces. Further, it is composed of a plurality of pieces, and they may be arranged in parallel or vertically and horizontally.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a dust collecting silo mainly used for temporarily accumulating wood chips, plastic chips, and the like, and in particular, enables smooth operation of a screw conveyor which is a discharging device thereof. The present invention relates to a discharge assisting device for.

[0002]

2. Description of the Related Art Generally, in large-scale woodworking factories and plastic factories, wood chips such as sawdust and chips discharged from the factory, and runners and other plastic chips during injection molding (hereinafter Then simply called wood chips such as W)
Is stored in a dust collection silo and is collectively discharged by a large vehicle. Therefore, the bottom surface of the dust collecting silo is a hopper that is inclined in an inverted conical shape, and a screw conveyor is provided at the bottom of the hopper to discharge downward.

[0003]

However, the dust collecting silo having the hopper at the bottom has a smaller inner volume due to the narrowing of the lower side. In addition to the increase in equipment cost and equipment cost, there was a problem that the wood debris accumulated there created a bridge in W and it was difficult to fall.

Therefore, as a discharging means that does not reduce the capacity of the dust collecting silo, a screw conveyor is provided at the bottom of the dust collecting silo instead of the hopper, and the screw conveyor can be traversed in a horizontal plane orthogonal to the axial direction of the screw. However, because the weight of wood chips such as wood chips accumulated on the upper surface of the screw conveyor is always high, the resistance of the screw conveyor is large when the screw conveyor is tried to traverse in that state. It is necessary to increase the strength of the motor and to increase the output of the electric motor for driving the motor, which also increases the facility cost.

[0005]

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and is provided with a discharge port 14 at the bottom of a housing 11 for discharging dust and the like inside, and above the discharge port 14. When the traverse type screw conveyor 20 movable on the discharge port 14 is provided, the transverse body 35 which is located above the transverse type screw conveyor 20 and traverses the housing 11 is provided inside the housing 11. . Specifically, the cross body 35 is formed of a wire-like body such as a string or a string, or a structure such as an angle material or a channel material. Further, the cross body 35 may be arranged between the opposite surfaces of the inner surface of the housing, or may be arranged between the adjacent surfaces. Further, it is composed of a plurality of pieces, and they may be arranged in parallel or vertically and horizontally.

[0006]

The weight of wood chips such as wood chips accumulated in the dust collecting silo acts vertically downward and acts on the screw conveyor 20, but a part of the weight is borne by the transverse member 35 stretched between the wall surfaces of the silo. The vertical load received by the screw conveyor 20 is reduced accordingly.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to the illustrated embodiments. In FIG. 1, 10 is a dust collecting silo using the present invention. The dust collecting silo 10 is supported on a supporting frame 30 assembled by welding H-shaped steel. The dust collecting silo 10 is composed of a rectangular casing 11 assembled by welding steel plates, and an upper portion thereof includes a receiving cyclone 12 that receives W such as wood chips together with air that is a carrier medium, and air that is the carrier medium. And a bag filter 13 for discharging the outside.

The receiving cyclone 12 is a so-called tangential inflow type, and as shown in FIG. 3, it has a cylindrical box body 12.
A shaft tube 12b is coaxially provided at the center of a, an annular passage is formed around the shaft tube 12b, and an inlet 12c is provided at a position off the axis of the box 12a. Therefore, wood chips or the like W sent together with air as a carrier medium enter the inlet 12c and are separated from the air by the centrifugal force while rotating around the shaft tube 12b and fall downward. Air separated from W such as wood chips is discharged into the outside air through the bag filter 13.

The bag filter 13 is vertically divided by a bag-shaped element 13a, which is a filter medium, and communicates with the atmosphere through an exhaust fan 13b and an exhaust duct 13c provided on the downstream side thereof. Thus, when the exhaust fan 13b is operated, when the air carrying W such as wood chips passes through the bag-shaped element 13a, fine dust contained therein is removed, and the air is discharged from the exhaust duct 13c. It is released into the atmosphere as shown by the arrow. Numerals 14 and 14 are outlets for wood chips and the like provided at the bottom of the housing 11 and are opened and closed by a sliding door type opening / closing door 14a. T is each outlet 14,1
4 is a truck T which is directly below the truck 4, and the discharge port 1414 is opened on the loading platform.

Reference numeral 20 is a transverse screw conveyor provided at the bottom of the casing 11. Screw conveyor 20
Has two screw shafts 22, 22, which are supported by a moving frame 21 and are arranged in parallel, as shown in FIG. Both screw shafts 22 and 22 are driven at a constant speed by an electric motor 25. Here, the screw shafts 22, 22 are set to have different screw pitches. Therefore, those screw shafts 2
When the 2 and 22 rotate, wood chips such as wood chips in the dust collection silo 10 W
Are transferred at different speeds for each screw shaft 22. Therefore, a complicated motion is generated between W and the like such as wood chips transferred,
The bridge phenomenon unique to the screw conveyor is reduced.

The moving frame 21 for supporting the screw shafts 22, 22 comprises a pair of left and right arranged on both sides of the housing 11, which are wheels 23, 23 and rails 24, 2 respectively.
4 and thus, the screw shafts 22 and 22 convey the housing 11 so as to move transversely. That is, when the electric motor 25 rotates, the screw shaft 22
Rotates and conveys W such as wood chips accumulated on the bottom of the housing 11 toward the discharge port 14. When the traveling motor 26 rotates the wheels 23, the screw shaft 22 supported by the moving frame 21 moves in a direction orthogonal to the axis of the screw shaft 22.

In FIG. 3, reference numeral 35 denotes a transverse member provided inside the housing 11. The cross body 35 is made of wire, steel wire, or a rope-like body, and the end portion of the cross body 35 has the casing 1
It is locked to the connecting fittings 15, 15 provided on the outer surface through the through holes provided on the wall surfaces facing each other. The number of the cross bodies 35 and the mode of use are not limited to one, and a plurality of dust collection silos 10 having a wide bottom area are used.

That is, the transverse members 35 may be arranged in parallel between the opposing wall surfaces, or may be arranged so as to intersect each other as shown in FIG. 5 (a). Alternatively, FIG.
As shown in (b), it may be provided between the adjacent wall surfaces of the housing 11. Further, as shown in FIG. 4, a plurality of units may be arranged in the vertical direction to form multiple stages. In addition,
The cross body 35 is not limited to the above string-like body, and may be formed of a structure made of steel such as an angle material and a channel material. Such various modifications are appropriately selected depending on the composition and properties of W such as wood chips. Reference numeral 16 is a handrail for improving safety.

Since this embodiment is constructed as described above, the wood chips and the like W carried by the air flow are carried from the charging cyclone 12 into the inside of the housing 11. The wood chips W that have been conveyed are separated from the air for conveyance by the input cyclone 12, and fall down to the bottom to cause the casing 11
Accumulated at the bottom of the. On the other hand, the air that has carried W such as wood chips swirls into the inside of the casing, where it reverses and rises there, enters the bag filter 13 to remove dust, and is then released into the atmosphere.

The wood chips W accumulated on the bottom of the housing 11 in this way are opened by opening the bottom of the housing 11 by means of the sliding door-shaped opening / closing door 14a provided in the lower portion. That is, the truck T is put in the support frame 30 and its loading platform is placed immediately below the discharge port 14 and stopped. Next, when the opening / closing door 14a located below the screw conveyor 20 is opened and the screw conveyor 20 is operated, wood chips and the like W accumulated on the upper surface thereof are collected by the screw shaft 22 in the central portion of the housing 11, and the discharge port It is discharged downward from 14.

W, such as accumulated wood chips, is transferred to the screw conveyor 2.
Although it is sunk by gravity by the amount discharged by 0, wood chips such as W are caught on the cross body 35 at this time and are hard to fall downward. In other words, since the weight is carried by the cross body 35, the weight acting on the transverse screw conveyor 20 located therebelow is reduced, and the transverse movement can be performed smoothly and lightly.

[0017]

According to the present invention, since a part of the weight of the wood chips such as W accumulated in the dust collection silo 10 is borne by the cross member 35, the wood chips such as W acting on the transverse screw conveyor 20. In addition to reducing the weight, the operation can be performed lightly and smoothly, and the electric motor for driving the same can be downsized, which is economical.

[Brief description of drawings]

FIG. 1 is a side view of a dust collection silo that is an embodiment of the present invention.

FIG. 2 is a front view thereof.

3 is a sectional view taken along line III-III in FIG.

4 is a sectional view taken along line IV-IV in FIG.

5 is a sectional view taken along line VV in FIG.

[Explanation of symbols]

 10 ...- Dust collection silo 11 ... Square housing 12 ...- Reception cyclone 12a ... Box 12b ... Axial tube 12c ... Inlet 13 ... Bag filter 13a ... Bag-shaped element 13b ... Exhaust fan 13c ... Exhaust duct 14 ... Exhaust port 14a ... Sliding door type open / close door 15 ... Connection fitting 16 ... Handrail 20・ ・ ・ ・ Transverse type screw conveyor 21 ・ ・ ・ ・ ・ ・ Moveable frame 22 ・ ・ ・ ・ Screw shaft 23 ・ ・ ・ ・ Wheels 24 ・ ・ ・ ・ ・ ・ Rail 25 ・ ・ ・ ・ Electric motor 26 ・ ・ ・ ・ Travel electric motor 30 ・・ ・ ・ Support frame 35 ・ ・ ・ ・ ・ ・ Cross body T ・ ・ ・ ・ ・ ・ Truck, W ・ ・ ・ ・ Wood chips, etc.

Claims (7)

[Claims] 1. When a discharge port 14 for discharging dust inside is provided at the bottom of a housing 11, and a traverse type screw conveyor 20 movable above the discharge port 14 is provided above the discharge port 14. A transverse body 3 located inside the casing 11 above the transverse screw conveyor 20 and traversing the housing 11.
Dust collection silo discharge assisting device provided with 5. 2. The discharge assisting device for a dust collecting silo according to claim 1, wherein the transverse member 35 is formed of a string-shaped member such as a wire or a string. 3. The discharge assisting device for the dust collecting silo according to claim 1, wherein the transverse member 35 is formed of a structure such as an angle member or a channel member. 4. The discharge assisting device for the dust collecting silo according to claim 1, wherein the cross body 35 is arranged between the surfaces of the housing 11 facing each other. 5. The discharge assisting device for the dust collecting silo according to claim 1, wherein the transverse member 35 is arranged between adjacent surfaces of the housing 11. 6. The discharge assisting device for a dust collecting silo according to claim 1, wherein a plurality of the cross bodies 35 are provided between wall surfaces of the housing 11, and the plurality of structures are arranged in parallel with each other. 7. The discharge assisting device for a dust collecting silo according to claim 1, wherein a plurality of the cross bodies 35 are provided between the wall surfaces of the housing 11, and the plurality of structures are arranged vertically and horizontally.