JPS58216840A - Vibrator - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a vibration device for removing particulate material from a deposit. This device has a base (e.g. ground)
It is arranged in a recess or opening provided with a button, on which particulate material is piled up, and by vibrating the device, the material is sent from the pile at a constant controlled rate into a conveyor device, Transport to the department where it will be used.

BACKGROUND OF THE INVENTION Devices for tapping from piles have been in use for some time and are typically used in conjunction with power plants and other coal-burning facilities. In such locations, an opening is provided in the ground leading to a tunnel connected to a furnace or other coal-burning equipment, and a large pile of coal is dumped into the opening. Inside the opening, a cylindrical hopper is installed under the jll:fN object,
A button is provided to allow the hopper to vibrate in order to feed beaten coal from its pile into the feeder.

The feeding device feeds the received material at a controlled rate to a conveyor, such as a belt, connected to its outlet, which conveys the received coal at a predetermined speed to a furnace or other point of use. Although the feeding device in this system is in operation all the time, the hopper is operated at intervals, and is otherwise inactive. This is because the hopper feed rate typically far exceeds the feeder requirements.

If the material left behind without being discharged from the hopper is kept as it is and the hopper is constantly vibrated, the material will be compacted and cause a bridging phenomenon (granules form an arch near the hopper exit and block the exit). ) and stop the flow of material.

The apparatus disclosed in my U.S. Pat. No. 4,131,193 eliminates the use of a hopper and provides excellent functionality for removing particulate material from its pile.
demonstrated. The device of that patent includes an adjustable extension member attached to the baffle plate to adjust the flow of material by controlling the angle of repose of the granular material when the vibration mechanism is not activated. Ta.

The present invention provides an improved mechanism for adjusting the feed rate of particulate material. This mechanism is configured so that when the imaging device is started, the material begins to flow easily and continues to flow at the desired flow rate. This mechanism also prevents the particulate material from becoming difficult to start due to the increased pressure of the material pile applied to the mechanism causing the granular material to be idled behind the mechanism. Therefore, the structure is such that the pressure of the material does not increase. The mechanism is arranged in such a way that it can be adjusted to change its settings without having to remove all of the material deposited on the device. Preferably, the imaging device is configured to be able to change its material supply rate. Further, when the feeding device is stopped, the feeding of the material is also stopped, and when the feeding device is started again, the feeding of the material is resumed. Also, if desired, the feeding device may be operated continuously for a relatively long period of time. As a result, material bridging or blockage phenomena are avoided, and the feed rate of material from the stack to the conveyor can be adjusted, achieving efficient delivery of granular material to the end use point. I can do it.

Referring now to the embodiment of the invention illustrated in FIGS. 1 and 2, an imaging device 10 is shown adapted to be mounted just below a large opening 11 in a base 12. As shown in FIG. In practice, the base 12 is formed by a concrete top wall 13 forming part of a tunnel or passageway 14 below the opening 11 . Typically, the upper surface of the base 12 is at ground level and the opening 11 is located directly below the drop-off location for the granular material to be conveyed. In a typical installation, the material is coal that has been pulverized to a relatively small size, and an elevated railway track is laid above the opening 11, and the coal is dropped from a coal-loaded truck downwards. forming a deposit of coal on the base 12-t. The vibrating device 10 installed in the opening 11 has a trough 15 in the shape of a positive square (preferably, < is a square). The trough 15 has side walls 16.17 sloping downward to a central opening 18 extending over its entire length, upright end walls 19.20, and an upright central wall 21.
It is equipped with

A baffle plate 22 is provided to cover the central opening 1B of the trough.

The baffle plate 22 has a first portion 22a extending arcuately downwardly from its center toward the side wall 17 of the trough, and a second portion 22a extending arcuately downwardly from its center toward the sidewall 16 of the trough. It consists of a portion 22b. The highest portion of the baffle plate is spaced above the central opening 18 of the trough.

The trough 15 has beams 25. extending along both sides thereof.
Fixed at 26. Beams 25,26 are tunnel 140
Floor 29. It is supported on a vibration isolating spring 27 supported by a column 28 supported at the center.

K spring 50a, go to give trough 151C vibration
An oscillator 6o is fixed to the beam 26 via b. The oscillator 3o is of the same type as that of the applicant's U.S. Pat.
Preferably, it is of the type disclosed in No. 558.815.

The material discharged from the trough 15 through its central opening 18 falls onto a conveyor belt 33 running through the tunnel 14 on idler rollers 54 . Referenced 65 is the return run of the conveyor belt.

A dustproof sealing member 36.37 is provided between the pair of vertical plates 31 forming both sides of the opening 110 and the top surface of the beam 25.26. Similarly, dust-proof sealing members 38 and 39 are provided between the bottom of the trough 15 and both side edges of the conveyor 33.

The material is piled up on the trough 15 to form a large IC pile on the paste 12, completely covering the opening 11 in the final stage. In that case, the material
a, 24b and adjacent trough side walls 16.17
and then deposits on -L. In this condition, if the trough is stationary, no material will be fed onto the conveyor 63 throughout the opening day.

When the oscillator 30 is started, vibrations are imparted to the trough 15, and the material supported by the trough and deposited on the opening 11 is moved between the side edges 24a, 24b of the baffle plate and the side walls 16, 17 of the trough. It is fed onto the conveyor 35 through the gap. Conveyor '53 then conveys the material to its final use location.

The angle of repose, or angle of rest, of powdered materials varies depending on the nature of the material. Some materials can be deposited relatively high (large angle of repose), while others cannot be deposited very high. If material continues to be deposited after reaching the angle of repose, the material pile collapses and the diameter at the bottom of the pile increases, keeping the angle of repose constant. When a pile of material is vibrated, its angle of repose becomes significantly smaller. The structure and operation of the device described above is substantially similar to that described in my US Pat. No. 4,131.193.

In the apparatus of the above patent, for processing certain powdered materials, the first portion 72a and the second portion 2 of the baffle plate 22 are
It has been found to be advantageous to make the baffle plate 22 as narrow as possible so as to leave the flow path outside the edges 24a, 24b as narrow as possible. If is left wide open, the material may continue to flow from the stack to the conveyor 33 even when the oscillator 60 is stopped.That is, the line of the material's angle of repose α (see FIG. 4) with respect to the horizontal 1t!!i! In the state where the inner end extends to the central opening 18, even if the oscillator is stopped,
Material may continue to flow to conveyor 33. Oscillator 3
Adjustable gates 50 are installed in the side walls 16, 17 on either side of the central opening 18 to intersect the angle of repose of the particulate material and prevent free flow of the material in order to control the flow of the material when the zero is stopped. Attach to.

Specifically, the depending flanges 51 of the chevron members 52 are respectively welded to the lower surface of the inner edges of the side walls 16,17 of the trough 15.
so as to define both side edges of the rectangular central opening 18. A plurality of elongated slots 54 are bored in the depending seven flange 51 parallel to each other and spaced apart in the longitudinal direction of the seven flange. Each gate 50 is fixed to the flange 51 by a plurality of laterally projecting dowel bolts 56 fixedly attached to the gate and inserted into slots 54 in the flange 51. A nut 58 is threaded onto the bolt 56 and tightened to lock the gate 50 to the respective trough side wall 16,17. Loosen nut 58 and gate 5
By moving the gate 0 up and down and tightening the old nuts, it is possible to adjust the 11 and 60 of each gate in the vertical direction.

As is well known, each particulate material has its own angle of repose in its resting state, as indicated by α in FIG. Without the gate 50 in FIG. 4, the line 62 representing the angle of repose of the material would extend beyond the edge of the central aperture, as described in the above-referenced U.S. patent.
The material continues to flow, at least in part, onto the conveyor 63.

Such flow can be achieved by keeping the width of the baffle plate 220 at the desired minimum K.
This is especially likely to occur when the area is narrowed down to

In accordance with the present invention, by arranging the adjustable gates 50 on both sides of the central opening 1B and setting the core gate so that its upper edge 60 is located L from the line 62 defining the angle of repose α of the material, Gate 50 when oscillator 30 is stopped
prevents the flow of material. When the oscillator 30 is started, the angle of repose of the material decreases and the material moves to the upper edge 6 of the gate (.

and flows down onto the conveyor 63.

Adjustment of the gate 50 is simple and can be done without the need to remove any deposits built up on top of the device. That is, it is sufficient to loosen the nut 58, move the gate 50 up and down with respect to the trough 15, and then tighten the nut again. The upper edge 60 of the gate 50 extends from the edge to the side edge 24a of the baffle plate 22.
, 24b defines an angle with respect to the horizontal that is less than the angle of repose of the material to be treated at rest. At rest, the top surface of the material is
coincides with the angle of repose α of the material. The angle B of the line 66 drawn from the side edge of the baffle plate to the upper edge 60 of the gate 50 is the angle of repose α
smaller, so the material does not flow. When the vibrator 10 is actuated, the angle of the upper surface of the material is less than the angle B and the material flows over the upper edge 60 of the gate 50 and onto the conveyor 56.

One feature of this imaging device is that the vibration direction is horizontal;
Being perpendicular to the longitudinal axis of the trough 15, each inclined side wall 16,17 acts as a vibratory feed member, feeding the material on the trough towards the proximal edge of the opening 18.

Also, when the imaging device 10 is activated, its vibrational forces are transmitted into the material deposit 42 on the aperture 11. The primary vibratory force is along arrow 430, which is approximately parallel to the material's internal deflection or curvature angle, which is approximately parallel to the material's angle of repose.

Thus, starting the vibrator will cause collapse of the material pile, and stopping the imaging device will stop the flow of material.

[Brief explanation of the drawing]

FIG. 1 is a perspective view of the vibration device of the present invention, FIG. 2 is a longitudinal cross-sectional view taken along line 2-2 in FIG. 1, and FIG. 3 is a deflection plate forming a part of the device in FIG. FIG. 4 is a cross-sectional view similar to FIG. 2, but with the device at rest;
The material is shown being deposited. FIG. 5 is a view similar to FIG. 4, but showing the device in operation. 10: Vibration device 11: Opening 12: Base 14: Tunnel (passage) 15 Nidraft 16.17: Side wall 18: Center opening 19.20: End wall 22.42: Deflector plates 24a, 24b: Side edge 25.26: Beam 27: Spring 30: Oscillator 33: Conveyor belt 50: Gate 52: Angled member 54 Varnish slot 56: Bolt 58: Nut

Claims (1)

[Claims] 1) A vibrating device for feeding granular material, which is adapted to be used in combination with a pace having an opening communicating with a passage below, comprising: a top and a top at the bottom of the trough; forming an opening extending from one end to the other, the trough having side walls extending downwardly and inwardly from sides thereof into the opening, fixed to the trough and extending upwardly from the trough; a deflector is provided, the lower edge of the deflector is spaced from the side walls of the top, and a central portion of the deflector is located above the opening of the trough to support the material deposited on the vibrator. mounting means are provided for mounting the vibrating device within the opening of the pace, the mounting means including a spring for vibratingly supporting the trough, and the vibrating device An oscillator for vibrating in a direction transverse to the longitudinal direction of the opening of the trough is fixed to the vibrator Wt, and a conveyor for receiving material discharged through the opening of the trough is arranged below the opening. , in order to control the flow of particulate material into the opening of the trough, vertical gates are attached to both sides of the opening, and a straight line extends from the upper edge of each gate to the side edge Kth of the baffle plate adjacent thereto. 2) A vibrating device characterized by having a VC configuration such that the angle with respect to the horizontal is smaller than the angle of repose of the granular material when it is at rest. 2) Used in combination with a pace having an opening communicating with a passage below. In a vibrating device for feeding granular material, an elongated rectangular trough is provided, an opening extending from one end to the other end K is formed at the bottom of the trough, and the trough has an opening at both ends. and side walls extending downwardly from the sides of the trough to the opening, the side walls being fixed to the end walls of the trough and extending from the trough over the entire length of the opening of the trough. an upwardly rolled baffle plate is provided, the tabular edges of the baffle plate are spaced from both side walls of the trough, and a central portion of the baffle plate is located in the −F direction of the opening of the trough;
The angle of a straight line extending from each lower edge of the baffle plate to the edge of the opening of the trough adjacent thereto with respect to the horizontal is smaller than the angle of repose of the particulate material at rest, and deposited on the imaging device. mounting means are provided for mounting the vibrating device within the aperture of the base so as to be able to support material to be loaded, the mounting means including a spring for vibratingly supporting the trough. an oscillator for moving the vibrating device in a direction VCfH transverse to the longitudinal direction of the opening of the trough, and a conveyor for receiving the material discharged through the opening of the trough; Vertical gates are disposed below the openings and are attached to opposite edges of the openings to control the flow of particulate material into the openings of the core trough, and the side edges of said baffle plate adjacent thereto from superior to each said gate. 11 of the baffle plate adjacent thereto from the upper edge of each gate so that the angle with respect to the horizontal is smaller than the angle of repose of the granular material at rest. Adjust the height of each gate above the side edge of the opening of the trough to increase or decrease as necessary to make the angle with the horizontal of the straight line extending to Il#, K smaller than the angle of repose at rest of the granular material. A vibrating device characterized by being provided with means for. 3) A vibrating device for feeding granular material, which is adapted to be used in combination with a base having an opening communicating with a passageway below, comprising an elongated rectangular trough, and one end of which is provided at the bottom of the trough. forming an opening extending from one end of the trough to the other end, the trough having side walls extending downwardly from the sides to the opening; a baffle plate having an arcuate cross section is fixed to the trough;
The lower edge of the baffle plate is spaced apart from the side walls of the trough, and the central portion of the baffle plate is positioned above the opening of the trough to support material deposited on the imaging device. mounting means for mounting the vibrating device within the opening of the base, the mounting means including a spring for vibratingly supporting the trough;
A oscillator for vibrating the vibrating device in a horizontal plane transverse to the longitudinal direction of the trough opening is fixed to the vibrating device, and a conveyor for receiving material discharged through the trough opening is fixed to the vibrating device. Vertical gates are disposed below the opening and are adjustably secured to opposite sides of the opening to control the flow of particulate material into the opening of the trough, with vertical gates adjacent from the upper edge of each gate adjacent thereto. An imaging device characterized in that the angle of the straight line extending to the side line of the deflecting plate with respect to the horizontal is smaller than the angle of repose of the granular side slope when it is at rest.