RU2352512C1 - Gate to deliver loose material from hopper - Google Patents

Abstract

FIELD: mechanics.

SUBSTANCE: proposed gate consists of a box with a shortened and elongated faces and two bearing housings accommodating an axle arranged to move therein and to turn the said gate, a gate turning lever, two brackets and strips to rule out material spillage. The gate features a concave surface. The aforesaid axle supports upper parts of two brackets rigidly fixed thereon, the lower parts of which are attached, on both sides, to the gate concave surface. The aforesaid rear strip ruling out material spillage is rigidly attached to aforesaid concave surface and to the brackets. The lateral strips are rigidly attached to aforesaid gate concave surface and to the brackets. The box shortened face accommodates two housings of the other bearings rigidly attached thereto and housing a movable axle supporting the material spillage rule-out strip pin-jointed to counter weight. The box upper part is rigidly jointed to the hopper bottom.

EFFECT: higher efficiency of gate operation in metered delivery of loose material containing lumps and ruling out loose material spillage through closed gate.

3 cl, 3 dwg

Description

The invention relates to the field of metallurgy, mechanical engineering, construction and mining and can be used in casting hoppers.

The closest technical solution is a shutter for dispensing bulk material from the hopper, consisting of a duct and a rotating gate valve on an axis located outside the duct dimensions and with a lever installed in its upper part; strips are installed on three sides of the inside of the duct to eliminate spillage of material, the duct is equipped with two bearing housings on brackets on both sides of a sector valve (RF Patent No. 2092417, M. Cl. B65G 65/30, 1994).

The disadvantages of the known shutter are the uneven delivery of bulk material and its seizing in closing and opening when using material with lumpy inclusions.

The objective of the invention is to increase the efficiency of the shutter by dispensing the issuance of granular material with lumpy inclusions (gravel, gravel), preventing leakage of granular material through the shutter in the closed position and eliminating jamming when opening and closing the shutter.

The problem is achieved in that in the shutter for the delivery of bulk material from the hopper, consisting of a box with shortened and elongated faces and with two bearing housings, inside which an axis is rotatably mounted that rotates by means of this axis of the valve, a lever for turning the said valve, two brackets and strips for eliminating spillage of material, it is new that the valve is made with a concave surface, the upper parts of two brackets, the lower parts of which are on both sides, are rigidly fixed on the said axis it is attached to the concave surface of the valve to which the back strip is rigidly attached to the brackets to eliminate spillage of the material, and the side strips are rigidly fixed to the concave surface of the valve and the brackets, while on the shortened face of the box two housings of other bearings with a movable axis inside are rigidly mounted which the front strip is rigidly fixed to eliminate spillage of material, connected to the counterweight using a pin, while the box is rigidly connected to the bottom of the hopper with the upper part. The concave surface of the valve is made with a radius equal to R = V ÷ 2V, where

In - the width of the box, mm

The height of the front, side and rear bands is 10-200 mm.

The execution of a valve with a concave surface and the lower part of the duct is convex in shape with the same radii equal to R = B ÷ 2V, where B is the width of the duct, in mm, it is necessary for them to be interfaced and to easily close and open the shutter.

The presence of side, front and rear strips allows, when the shutter is in the closed position, to create a locking cavity formed from the surfaces of the valve and the strips in the event of a clump of material in the gap between the valve and the front stripe.

The implementation of the valve with side and rear strips and brackets rigidly fixed on its concave surface, eliminates spillage of material, increases the reliability of closing and opening the shutter, and rigidly securing the front strip of the valve on an axis mounted movably inside the bearing housings, rigidly fixed on the shortened face of the box, prevents the shutter from sticking when a lump of material gets into the gap between the valve and the front strip.

For guaranteed prevention of spillage of material, the height of the strips is 10 ÷ 200 mm in accordance with the conditional maximum particle diameter of the pieces in the bulk material.

The execution of the duct with elongated and shortened faces prevents large static and dynamic loads in the place where the material enters during unloading: inside the duct, the center of gravity of the material is shifted to the elongated face and after opening the shutter the material slides to the unloading place.

Equipping the front strip with a pin with a counterweight allows for its gravitational closure.

The invention is illustrated by drawings, where:

figure 1 shows the shutter in a half-closed position - side view;

figure 2 - shutter in the closed position;

figure 3 - shutter in a half-closed position - front view.

The shutter for dispensing bulk material from the hopper 1 consists of a duct 2 with a shortened 3 and elongated 4 faces and with two bearing housings 5 and 6, inside of which an axle 7 is movably mounted, turning through this axis 7 of the valve 8, the lever 9 to rotate the said valve 8 , two brackets 10 and 11, rear 12, side 13 and 14, front 15 strips to eliminate spillage of material, and the valve 8 is made with a concave surface, the upper parts of the brackets 10 and 11, the lower parts of which are on both sides, are rigidly fixed prikr captures to the concave surface of the valve 8, to which and to the brackets 10 and 11, the rear strip 12 is rigidly attached to eliminate spillage of material, and the side strips 13 and 14 are rigidly fixed to the concave surface of the valve 8 and the brackets 10 and 11, while on the shortened face 3 boxes 2 are rigidly mounted two housings 16 and 17 of other bearings with a movable axis 18 inside, on which the front strip 15 is rigidly fixed to eliminate spillage of material, connected to the counterweight 19 using a stud 20, while the box 2 is rigidly connected to the upper part with Mr. Hopper 21 1.

The shutter operates as follows.

To supply bulk material from hopper 1, the lever 9 and the axis 7 rigidly connected to it and the gate valve 8 with side 13 and 14, rear 12 strips, two brackets 10 and 11 are rotated clockwise in the bearing housings 5 and 6. Material in the box hopper 1 2 on the inner surfaces of the elongated 4 and shortened 3 faces of the box 2 and through the opening gap between the valve 8 and the front strip 15 is unloaded to the place of unloading, and due to the execution of the box 2 with a shortened 3 and elongated 4 faces, the material is unloaded in the form of a slide. The rotation of the lever 9 controls the width of the slit and the issuance of a certain amount of bulk material.

To stop the delivery of material from the hopper 1, the lever 9 and the axis 7 rigidly connected to it and the valve 8 with side 13 and 14, rear 12 strips, two brackets 10 and 11 are rotated counterclockwise in the bearing housings 5 and 6 until the rear strip 12 stops elongated edge 4 of the box 2. When a lump of material gets into the gap between the valve 8 and the front strip 15, the latter deviates and thereby prevents the valve 8 from seizing. Using the valve 8, two side strips 13 and 14 and the front strip 15, a locking cavity is formed that prevents leakage loose m the material through the gap when a lump of material enters it. The rear strip 12 prevents the leakage of material through the rear of the valve 8. The presence on the front strip 15 of the stud 20 with the counterweight 19 provides an adjustable gravitational pressing of the front strip 15 to the box 2.

The technical result of the claimed invention is the creation of a shutter design that provides increased operating efficiency due to the dosed dispensing of bulk material containing lumps, preventing leakage of bulk material through the shutter in the closed position and eliminating the jamming of the shutter when opening and closing.

Claims (3)

1. A shutter for dispensing bulk material from a hopper, consisting of a box with shortened and elongated faces and with two bearing housings, inside which an axis is movably mounted, which rotates by means of this axis of the valve, a lever for turning the said valve, two brackets and strips to eliminate spillage of material characterized in that the valve is made with a concave surface, on the said axis the upper parts of two brackets are rigidly fixed, the lower parts of which are attached on both sides to the concave surface of the rear the housing, to which the rear strip is rigidly attached to the brackets and to prevent material spillage, and the side stripes are rigidly fixed on the concave surface of the valve and the brackets, while on the shortened face of the box are two other bearing housings with a movable axis inside, on which the front strip is rigidly fixed to eliminate spillage of material, connected to the counterweight with the help of a pin, while the box with the upper part is rigidly connected to the bottom of the hopper. 2. The shutter according to claim 1, characterized in that the concave surface of the valve is made with a radius equal to R = B ÷ 2B,
where B is the width of the box, mm 3. The shutter according to claim 1, characterized in that the height of the front, side and rear bands is 10 ÷ 200 mm

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