CN104071597B - Lump coal anti-breakage loading system for open-air coal bunker - Google Patents

Abstract

The invention relates to an anti-breakage loading system for block coal in an open-air coal bunker, which includes a telescopic chute, a buffer bin and a hoist. There is a buffer bin at the top of the chute, a coal level gauge is installed in the buffer bin, and the buffer bin is set corresponding to the conveyor outlet; the bottom sleeve of the telescopic chute is connected with the wire rope of the hoist; the system also includes a bearing mechanism and a slewing mechanism; The bearing mechanism is composed of front truss, rear truss and tie rods, and is installed on the working platform on the side of the coal bunker through the slewing mechanism. The system is equipped with a telescopic chute device, so that the lump coal can slowly slide down the chute. Prevent the coal from breaking; the system is also equipped with a bearing mechanism and a slewing mechanism. The slewing mechanism is installed on the side platform of the open-air coal bunker. The bearing mechanism is used to support the chute to realize the anti-breakage loading of the open-air coal bunker, and the anti-breakage effect is good when entering the warehouse. , high work efficiency, easy installation and maintenance.

Description

A block coal anti-breaking loading system for open-pit coal bunker

technical field

The invention relates to the technical field of mineral processing, in particular to an anti-breakage loading system for lump coal in an open-air coal bunker.

Background technique

Lump coal is a major product of coal mines, which is widely used in chemical industry, gas production, baking and family life, and plays an important role. Compared with mixed coal, lump coal not only has better coal quality but also has a wide range of uses, and its price is tens or even hundreds of yuan higher per ton, which has high economic benefits. From the coal mining face to the loading of coal products in the coal preparation plant, the total crushing rate of lump coal is about 23%, of which the crushing rate of binning is about 11%. It can be seen that the crushing of lump coal in binning is even more serious. The most important link among many broken links. The traditional silo anti-breakage methods include low warehouse method, hanging bucket method, buffer method, spiral chute method, etc.

The short bunker method is to build a coal bunker with a small drop. Since the square of the lump coal’s velocity before and after landing is proportional to the drop, the breakage rate of the lump coal will be significantly reduced by reducing the height of the coal bunker. This method The disadvantage is that it reduces the capacity of the coal bunker and reduces the effect of coal storage.

The bucket method is to put the lump coal into the hopper first, then lower the hopper smoothly, and after it falls to the "ground" in the warehouse, the lump coal is unloaded into the warehouse, and the empty bucket rises, and the cycle repeats. Although the effect of this method is better, the structure is more complicated and the maintenance cost is too high.

The spiral chute method is to build a spiral chute in the coal bunker. When the lump coal is loaded into the coal bunker, the lump coal slides along the spiral chute, prolonging the sliding distance of the lump coal, generating friction, reducing the kinetic energy of the lump coal, and reducing the breakage of the lump coal entering the bin. Rate. Its disadvantage is that it is difficult to manufacture, process and install. The anti-broken effect depends on the coal quality, particle size, helix angle and inclination angle, which requires individual experiments and scientific calculations. If the angle is not suitable, it will cause coal blocking or even the collapse of the chute. ACCIDENT.

Chinese patent document CN 102020122 discloses a "peristaltic lump coal anti-shattering system and method", including a frame, a material level gauge, a buffer hopper, a pulley, a telescopic cylinder, a connecting rope, a steel wire rope, a frequency conversion winch, a PLC control cabinet and accessories. Heavy, the PLC controls the operation of the variable frequency winch according to the coal level and winch operation status signals, and automatically realizes the creeping and sliding of the lump coal in the telescopic tube to prevent the lump coal from breaking. The entire system uses the top of the coal bunker as the bearing mechanism, so it is only suitable for closed coal bunkers and cannot be applied in open-air coal bunkers.

Contents of the invention

The purpose of the present invention is to solve the above problems and provide an anti-broken coal loading system for open-air coal bunkers. The whole machine can be moved to the working platform of the coal bunker through the rotation of the rotary mechanism, which is suitable for lump coal loading in open-air coal bunkers. , It facilitates the installation and maintenance of the equipment, can reduce the breakage rate of lump coal in the warehouse, improves the overall work efficiency, and reduces the workload.

The present invention is achieved through the following technical solutions: an anti-broken loading system for lump coal in an open-air coal bunker, which includes a telescopic chute, a buffer bin and a hoist, and the telescopic chute is set at the center of the coal bunker, and its diameter increases successively The sleeve is socketed; the top of the telescopic chute is provided with a buffer bin, and a coal level gauge is installed in the buffer bin, and the buffer bin is set corresponding to the conveyor outlet; the bottom sleeve of the telescopic chute is connected to the wire rope of the hoist connection; the system also includes a carrying mechanism for supporting the telescopic chute and a turning mechanism for rotating the entire loading system; the carrying mechanism is connected by a front truss, a rear truss and a pull on the working platform on the side of the warehouse.

One end of the steel wire rope is connected with the elevator, and the other end is connected with the bottom end of the telescopic chute.

The bottom plate of the buffer bin is provided with two symmetrical fixed pulleys that provide guidance for the wire rope.

The hoist is fixedly connected to the rear truss.

The coal level gauge is connected to the control circuit of the hoist, and the coal level gauge acquires the amount of lump coal in the telescopic chute, thereby controlling the operation of the hoist, and then controlling the lifting of the telescopic chute, so that the lump coal can slowly flow into the coal bunker.

The front end of the front truss is fixedly connected with the top of the telescopic chute.

The slewing mechanism is composed of a fixed plate, a slewing support and a base, the base is fixedly connected to the platform, the top surface of the slewing support is connected to the fixed plate through bolts, and the bottom is connected to the base.

The installation and maintenance method of the lump coal anti-breaking loading system of the open-air coal bunker: first shrink the telescopic chute, then install the whole device on the platform on the side of the coal bunker, and rotate the slewing bearing 90° counterclockwise after installation , so that the entrance of the buffer bin is facing the end of the belt conveyor, and then extend the telescopic chute to start normal work; during maintenance, first shrink the telescopic chute through the hoist, and then rotate the slewing bearing 90° clockwise, so that the whole device is mounted on On the platform on the side of the coal bunker, after the maintenance is completed, turn the slewing bearing 90° counterclockwise so that the entrance of the buffer bin is facing the end of the belt conveyor, and then lower the telescopic chute to continue working normally.

The method of using the anti-breakage loading system for lump coal in an open-air coal bunker is as follows: when working, release the telescopic chute first, and the bottom surface of the sleeve at the bottom is in contact with the material surface in the coal bunker, so that the lump coal in the telescopic chute cannot It flows directly into the coal bunker; after the lump coal in the telescopic chute is full, the lower sleeve is lifted, and with the pulling of the lower sleeve, a gap is formed between the bottom surface of the lower sleeve and the material surface of the coal bunker, and the lump coal in the telescopic chute Gradually and slowly flow into the coal bunker to avoid the breakage caused by lump coal entering the bunker at high speed.

The advantages of the present invention are: an anti-breaking loading system for lump coal in an open-air coal bunker, the system is provided with a telescopic chute device, so that the lump coal can slowly slide down the chute and be loaded into the coal bunker to prevent the lump coal from being broken; The system is also equipped with a bearing mechanism and a slewing mechanism. The slewing mechanism is installed on the side platform of the open-air coal bunker. The bearing mechanism is used to support the chute to realize the anti-breakage loading of the open-air coal bunker. It is suitable for the open-air coal bunker and has an anti-breakage effect when entering the bunker Good, high work efficiency, easy installation and maintenance.

Description of drawings

The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

Accompanying drawing 1 is a structural schematic diagram of an open-pit coal bunker lump coal anti-breaking loading system.

In the figure, 1. Telescopic chute, 2. Steel wire rope, 3. Buffer bin, 4. Coal level gauge, 5. Symmetrical fixed pulley, 6. Front truss, 7. Pull rod, 8. Fixed disc, 9. Slewing bearing, 10. Conveyor, 11. Rear truss, 12. Hoist, 13. Base.

detailed description

In the accompanying drawings, an open-air coal bunker lump coal anti-breaking loading system includes a telescopic chute 1, a buffer bin 3 and a hoist 12. The telescopic chute 1 is located in the center of the coal bunker, and the The sleeve is sleeved; the top of the telescopic chute 1 is provided with a buffer bin 3, and a coal level gauge 4 is installed in the buffer bin 3, and the buffer bin 3 is set corresponding to the outlet of the conveyor 10; the bottom end of the telescopic chute 1 is set The cylinder is connected with the wire rope 2 of the hoist 12; the system also includes a load-bearing mechanism for supporting the telescopic chute 1 and a slewing mechanism for rotating the entire loading system; the load-bearing mechanism is composed of a front truss 6, a rear truss 11 and a pull rod 7 connected, and installed on the working platform on the side of the coal bunker through the slewing mechanism.

One end of the steel wire rope 2 is connected to the hoist 12, and the other end is connected to the bottom of the telescopic chute 1.

The bottom plate of the buffer bin 3 is provided with two symmetrical fixed pulleys 5 that provide guidance for the wire rope 2 .

The hoist 12 is fixedly connected to the rear truss 11 .

The coal level meter 4 is connected to the control circuit of the hoist 12, and the coal level meter 4 obtains the amount of lump coal in the telescopic chute 1, thereby controlling the work of the hoist 12, and then controlling the lifting of the telescopic chute 1, so that the lump coal can be slowly into the coal bunker.

The front end of the front truss 6 is fixedly connected with the top end of the telescopic chute 1 .

Described slewing mechanism is made of fixed plate 8, slewing support 9 and base 13, and base 13 is fixedly connected on the platform, and slewing support 9 top surfaces are connected with fixed plate 8 by bolt, and bottom is connected with base 13.

The installation and maintenance method of the lump coal anti-breaking loading system of the open-air coal bunker is as follows: first shrink the telescopic chute 1, and then install the whole device on the platform on the side of the coal bunker. Rotate 90° so that the entrance of the buffer bin 3 is facing the end of the belt conveyor 10, and then extend the telescopic chute 1 to start normal operation; during maintenance, first shrink the telescopic chute 1 through the hoist 12, and then rotate the slewing bearing 9 clockwise Rotate 90° to make the whole device stop on the platform on the side of the coal bunker. After the maintenance is completed, rotate the slewing bearing 9 counterclockwise 90° so that the entrance of the buffer bin 3 is facing the end of the belt conveyor 10, and then lower the telescopic chute 1. Continue to work normally.

The method of using the anti-broken loading system for lump coal in an open-air coal bunker is as follows: when working, first release the telescopic chute 1, and the bottom surface of the bottom sleeve is in contact with the material surface in the coal bunker, so that the lump coal in the chute cannot It flows directly into the coal bunker; after the block coal in the telescopic chute 1 is full, the lowermost sleeve is lifted, and as the lower sleeve is pulled, a gap is formed between the bottom surface of the lower sleeve and the material surface of the coal bunker, and the coal in the telescopic chute 1 The lump coal flows into the coal bunker gradually and slowly, avoiding the breakage caused by the lump coal entering the bunker at high speed.

Claims (10)

1. an outdoor coal bunker lump coal breakage-proof Load System, including retractable chute (1), surge bunker (3) and elevator (12), institute State retractable chute (1) and be located at the center of coal bunker, and the sleeve increased successively by diameter is socketed to form；Described retractable chute (1) Top is provided with surge bunker (3), installs coal level meter (4) in surge bunker (3), and surge bunker (3) corresponding conveyer (10) outlet is arranged； The bottom sleeve of described retractable chute (1) is connected with the steel wire rope (2) of elevator (12)；It is characterized in that, this system also includes For the load carrier supporting retractable chute (1) and the slew gear rotated for making whole Load System realize；Described carrying Mechanism is formed by connecting by front truss (6), rear truss (11) and pull bar (7), and is arranged on the work of coal bunker side by slew gear Make on platform.

One the most according to claim 1 outdoor coal bunker lump coal breakage-proof Load System, it is characterised in that described steel wire rope (2) one end is connected with elevator (12), and the other end connects the bottom of retractable chute (1).

One the most according to claim 1 outdoor coal bunker lump coal breakage-proof Load System, it is characterised in that described surge bunker (3) base plate is provided with two symmetrical fixed pulleys (5) that steel wire rope (2) provides guide effect.

One the most according to claim 1 outdoor coal bunker lump coal breakage-proof Load System, it is characterised in that described elevator (12) it is fixed on rear truss (11).

One the most according to claim 1 outdoor coal bunker lump coal breakage-proof Load System, it is characterised in that described coal level meter (4) control circuit with elevator (12) is connected.

One the most according to claim 1 outdoor coal bunker lump coal breakage-proof Load System, it is characterised in that described front truss (6) front end is connected with the top of retractable chute (1).

One the most according to claim 1 outdoor coal bunker lump coal breakage-proof Load System, it is characterised in that described turn-around machine Structure is made up of fixed disk (8), pivoting support (9) and base (13), and base (13) is fixed on platform, pivoting support (9) end face Being connected with fixed disk (8) by bolt, bottom is connected with base (13).

8. the installation of the outdoor coal bunker lump coal breakage-proof Load System utilized described in claim 7 any one claim Method, it is characterised in that first shunk by retractable chute (1), be then contained in by whole device on the platform of coal bunker side, installs After by pivoting support (9) counterclockwise half-twist, make surge bunker (3) entrance end just to belt feeder (10), then will be flexible Chute (1) extends, and starts normal work.

9. the maintenance of the outdoor coal bunker lump coal breakage-proof Load System utilized described in claim 7 any one claim Method, it is characterised in that first pass through elevator (12) and retractable chute (1) is shunk, then by pivoting support (9) dextrorotation Turn 90 °, make whole device be parked on the platform of coal bunker side, after having safeguarded, then by pivoting support (9) half-twist counterclockwise, Make surge bunker (3) entrance end just to belt feeder (10), then transfer retractable chute (1), continue normal work.

10. the one outdoor coal bunker lump coal breakage-proof that a kind utilizes described in claim 1～7 any one claim loads system The using method of system, it is characterised in that during work, first decontrols retractable chute (1), descends most joint sleeve bottom surface and charge level in coal bunker Contacting, in making chute, lump coal cannot flow directly into coal bunker；After filling in retractable chute (1) interior lump coal, then promote the most lower joint set Cylinder, along with the lifting of lower sleeve, lower sleeve bottom surface and coal bunker charge level produce seam away from, retractable chute (1) interior lump coal is rallentando In inflow coal bunker, it is to avoid lump coal put in storage at a high speed cause broken.