SU1131789A1 - Device for vibratory discharge of conveyed ore - Google Patents

Abstract

1. DEVICE FOR VIBRATING OF HARD-TRANSPORTABLE ORE, including suspended on flexible connections and a transverse bulkhead tray connected to a pneumatic vibration exciter having a supply air duct, which, in order to improve the performance of a vibration outlet and improve the hygiene hygiene pipelines, to improve the hygiene hygiene and improve the hygiene hygiene pipelines. provided with a plate attached to the upper rear of the tray with a gap relative to the bulkhead, and a pipeline for supplying pressurized water connected to an air duct th. In SAE 00; o

Description

2. The device according to claim 2, characterized in that the pipelines have chokes.

3. The device according to paragraphs. 1 and 2, characterized in that the bulkhead is provided with sealing elements placed on its three sides.

4. Device on PP. .1 - 3, characterized in that the bulkhead is provided with an apron made with a bend directed towards the outlet and attached to its lower part.

5. Device on PP. 1-3, characterized in that the bulkhead is made with throttling openings.

6. The device according to paragraphs. 1 and 2, characterized in that a hatch is made in the rear part of the bottom of the tray, and the tray is provided with a lid located under the hatch, the vibration exciter being attached to the lid.

7. The device according to paragraphs. 1 and 2, characterized in that the inner surface of the overhang 1 and the plate is covered with an anti-noise insulation made of rubber.

The invention relates to vibrotransport and can be used in the mining industry for the release of recovered minerals from blocks, ore lugs and tanks and loading it into vehicles for the extraction of mainly hard-to-transport ore.

A device for vibro-release is a vibrating feeder, comprising a tray suspended on flexible connections, and a reciprocating drive 1.

Closest to the present invention is a device for vibrating of a hard-transportable ore, including a tray suspended on flexible connections with a transverse bulkhead connected by a pneumatic vibration exciter having an air supply line 2.

A disadvantage of the known device is that it is difficult to release and transport ores with high humidity and high content of clay particles prone to sticking, and this leads to an insufficiently high vibration output. In addition, when transporting heavily crushed ores, the air becomes dusty around the workplace, which makes it unacceptable for people to stay in such an atmosphere.

The purpose of the invention is to increase the productivity of vibration and improve sanitary and hygienic working conditions.

This goal is achieved by the fact that a device for vibrating a hardly transportable ore, comprising a tray with a transverse bulkhead connected to flexible connections, connected to a pneumatic vibration exciter having a supply air duct, is provided with a plate fixed to the upper rear part of the tray with a gap relative to the bulkhead, and pipeline for water supply under

pressure connected to the air duct.

Pipelines have throttles. The bulkhead is provided with sealing elements placed on three sides, and an apron, made with a bend directed towards the outlet, and attached to its lower part. In addition, the bulkhead is made with throttling holes. A hatch is made in the back of the bottom of the tray, and the tray is equipped with a lid located under the hatch, with the vibration exciter attached to the lid. The internal surface of the bulkhead and plate is covered with anti-noise insulation made of rubber.

FIG. 1 shows a device installed in the exhaust excavation under the ore pass, a longitudinal section; in fig. 2 shows section A-A in FIG. one; in fig. 3 - option to install bulkheads with seals; in fig. 4 shows a variant with a hatch in the bottom of the tray and with throttling holes in the bulkhead; in fig. 5 - option with installation of the tray on the elastic supports; in fig. b - option with installation of a tray on inclined elastic support.

The device for vibro-production of a hard-transportable ore consists of tray 1 (Figs. 1 and 2) suspended on flexible connections x 2 with the possibility of oscillation, for example, under the ore release 3. The tray is made with rear wall 4, and inside it is installed a transverse bulkhead 5 attached to the rear wall 4, using elastic suspensions, juice 6 with the possibility of reciprocating movement along tray 1. Elastic suspensions 6 can be made of any acceptable design, in particular (shown in the drawings) in the form of packages made of elastic (re zine) gaskets. A pneumatic vibration exciter 7 is installed between the rear wall 4 and the transverse bulkhead 5, the driving force of which is directed normal to the wall 4 and the bulkhead 5. A pneumatic vibration exciter of any known design: piston, diaphragm, and sleeve-valve can be used as an exciter. The vibration exciter can be installed, for example, on connecting rods 8 hinged on the bottom of tray 1. Pneumatic vibration exciter 7 either through the j8 connecting rod system, or directly through sleeve 9 through an adjustable throttle 10 and a starting valve (not shown) connected to a compressed air source. A sleeve 11 is connected to the sleeve 9, which is connected to a pressurized water source (in mine conditions - to a water pipeline, the pressure of water in which is always higher than the pressure of compressed air in the network) through an adjustable throttle 12 and a starting valve (not shown). The starting devices for supplying compressed air and water can be blocked by one control. A plate 13 with a gap relative to the transverse bulkhead 5 is attached to the upper rear (loading) part of the tray 1, which together with the tray forms an enclosed housing of an exciter, in which there is a gap (between the bulkhead and the bottom of the tray and between the bulkhead and the plate 13) from the transverse bulkhead 5, used to pass directly into the ore stream of spent compressed air together with dispersed water from the housing of the vibration exciter. The front discharge part of tray 1 is installed above the haulage vessel, for example trolley 14.

When the ore fines stick to the bottom of the tray, it is advisable to transverse the bulkhead 5 from three sides, from the sides and from above, to provide a sealing element 15 (Fig. 3). In this case, all the exhaust air with dispersed water enters the ore flow along the bottom of the tray. In order for the pressure of the exhausted compressed air to be large and to wash away the ore fines adhering to the bottom of the tray, the apron 16 should be attached to the bottom of the transverse bulkhead 5 (Fig. 4). In order to prevent the ore from sticking to the bulkhead, throttling holes must be made in the latter. 17, which, with the aim of less clogging, is expediently directed downward (Fig. 4).

In order to simplify the removal and installation of the vibration exciter 7, in case it needs to be repaired, a hatch 18 (Fig. 4) with a lid 19 can be installed in the rear part of the bottom of the tray 1, which is connected to the tray 1 for safer work during installation, adjustment and disassembly of the vibration exciter 1 hinge 20.

In case of heavy loads on the tray 1 of the vibrating feeder, the flexible connections 2 may be unacceptable, therefore the tray can be installed on the base 21 by means of elastic supports 22.

The base 21 is fastened to the soil of the delivery making 23 (Fig. 5). There may also be cases when a very uniform (metered) supply of the transported material is required, for example, when delivering broken ore to a conveyor. In such cases, the inclined position of tray 1 is undesirable, and conveyor backfilling is possible, causing downtime. For such cases, it is advisable to position the tray 1 horizontally (Fig. 6). However, with this arrangement, the performance of the vibrating feeder may decrease, since the gravitational forces no longer participate in the transportation process. Therefore, the bottom of the tray is made with protrusions 24 inclined towards the loading end of tray 1, and on the base 21, protrusions 25 are made having an inclination towards the discharge end of the tray. When this plane protrusions 24 and 25 are parallel. Elastic supports 22 are placed between the protrusions. To fix the elastic supports between the projections 24 and 25, teeth 26 are formed on the respective sides on the protrusions.

The device for the vibration of trudnosporostiruemoy ore works as follows.

When the device is put into operation, compressed air and pressurized water in proportions given by adjustable throttles 10 and 12 enter the vibration exciter 7 and bring it into action. The vibration exciter 7 (Fig. 1), due to the inclination of the rear wall 4 of the tray 1, before starting, is in the position 4 pressed to the rear wall. When compressed air enters it, it pushes away from the specified wall and, moving rapidly towards the transverse bulkhead 5, strikes the last blow. As a result of the rebound, as well as under the action of gravity force, the vibration exciter reverses and hits wall 4, after which the cycle repeats. The reciprocating movement of the vibration exciter 7 is performed with the help of connecting rods 8 pivotally attached to the bottom of tray 1. As a result of these movements of vibration exciter 7, tray 1 comes in oscillatory and transverse bulkhead 5 in reciprocating movement in antiphase to movement of the tray. At the same time, tray 1 swings on flexible links x 2, and transverse bulkhead 5, making a reciprocating motion, deforms the elastic suspensions 6.

The tray and transverse bulkheads reversely move due to the energy accumulated during the direct movement of the vibration exciter in elastic suspensions 6, and its mass together with the mass located on the ore also contributes to the reverse movement of the tray. During the forward run, the transverse bulkhead 5 pushes the ore from tray 1, and the tray is pulled out from under the ore, which from its slope at the discharge end of the tray falls down into the carriage 14. During the return stroke, tray 1 and transverse bulkhead 5 occupy the initial position and form from the emptiness side of the bulkhead, it is filled with ore coming from the ore channel 3. At the same time, the water supplied together with the compressed air to the vibration exciter 7, due to turbulence and the impact nature of the work of the external exciter, is sprayed (dispersed) to a fog pattern new state The obtained air-water enters the mixture into the casing of the vibration exciter formed by the plate 13, the rear wall 4 of the tray, the transverse bulkhead 5 and the bottom of the tray, and through the gap between the plate 13 and the transverse bulkhead 5 penetrates the ore flow under the residual pressure. The water settles, wets the ore, the spent compressed air of it aerates, as a result of which the coefficient of internal friction of the ore is reduced, and as a result, its mobility and, consequently, the efficiency of vibro-transportation of ore to the tray increases. The amount of water supplied to the vibration exciter is regulated by the choke 12, and empirically determines the degree of wettability of the ore, at which its sticking and sticking to the bottom of the tray and to the transverse bulkhead decreases to a possible minimum. During transportation of finely crushed ore with a high content of clay particles, the device Referring to FIG. 3 or 4. In this case, due to the presence of the sealing element 15, the air-water mixture enters the gap between the transverse bulkhead 5 and the bottom of the tray 1, actively affecting and destroying the ore bed formed on the bottom of the transported material. To increase this effect, an apron 16 attached to the lower part of the transverse bulkhead 5 (Fig. 3) is attached, and sticking to the transverse bulkhead of ore fines is eliminated by making down the throttling openings 17 (Fig. 4) in the transverse bulkhead, which reduces clogging. Simplifies maintenance and facilitates repair work, as well as the installation and disassembly of the vibration exciter, the presence of a hatch 18 at the bottom of tray I, covered by a lid 19, reinforced under the bottom of the tray at the joints 20. In this version, the vibration exciter 7 is mounted on the lid 19 of the hatch 18 using joints 8 therefore, when opening the hatch 18 and lowering the cover 19, it is easily removed to the outside. When performing the device according to FIG. 5 his work is similar, except for the following. The presence of a flexible connection of the tray 1 with the base 21 through the elastic supports 22 somewhat reduces the reciprocating movement of the tray, which is partially transformed into its transverse oscillation, for the beneficial implementation of which the tray is given a greater angle of inclination to the horizon. At the same time, the productivity of the device does not decrease, but due to the presence of supports it is made less sensitive to the conditions of work under the ore load. When using a conveyor, its overload is unacceptable and in this case the variant shown in FIG. 5, where on the bottom of the tray 1 and on the base 21 there are inclined projections 24 and 25 with parallel planes, respectively, between which elastic supports 22 are located, which cannot roll down due to the presence of teeth 26 on the projections. the translational movement of the tray 1 is converted partially to the throwing, due to which the material is vibrated, the particles of which are thrown in a direction inclined forward to the bottom of the tray and fall in the direction of gravity. This movement is complemented by the effect of cross bulkhead 5, which ensures high productivity of the device. But with the horizontal position of tray 1, the possibility of accidental overloading of vehicles is eliminated, since the uniformity of the conveyed material increases significantly. The invention makes it possible to increase the productivity of the vibration release and to improve the sanitary and hygienic working conditions.

FIG. 2

sriez

23

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Claims (7)

1. DEVICE FOR VIBRATION OF TRANSPORTED ORE, including a tray suspended on flexible connections with a transverse bulkhead connected to a pneumatic vibration exciter having an air supply pipe, characterized in that, in order to increase the productivity of the vibration and improve the sanitary and hygienic working conditions, it is equipped with a plate attached to the upper back of the tray with a clearance relative to the bulkhead, and a pipeline for supplying pressurized water connected to the air pipe. 2. The device according to p. 2, characterized in that the pipelines have chokes. 3. The device according to paragraphs. 1 and 2, characterized in that the bulkhead is equipped with sealing elements placed on its three sides. 4. The device according to paragraphs. 1 - 3, characterized in that the bulkhead is equipped with an apron made with a bend directed to the> discharge side and attached to its lower part. 5. The device according to paragraphs. 1 to 3, characterized in that the bulkhead is made with throttling holes. 6. The device according to paragraphs. 1 and 2, characterized in that a hatch is made in the back of the bottom of the tray, and the tray is equipped with a lid located under the hatch, and the vibration exciter is attached to the lid. 7. The device according to paragraphs. 1 and 2, characterized in that the inner surface of the bulkhead and plate is covered with anti-noise insulation made of rubber.