KR101692184B1 - Coal feeder have tension control apparatus - Google Patents

Abstract

Disclosed is a coal feeder having a belt tension adjustor. The coal feeder having a belt tension adjustor comprises: a casing with an inner space; a conveyer installed inside the casing and having a transmission belt and transmission drums coupled to opposite sides of the transmission belt to thereby rotate the transmission belt; and a take-up part connected to one of the transmission drums and moving the position of the transmission drum along the length of the transmission belt to adjust a gap between the transmission drums. Accordingly, the present invention is able to automatically adjust a tension in a transmission belt of a conveyer of a coal feeder transmitting fuel to thereby prevent sagging of the transmission belt and avoid a loss in fuel caused by the shaking of the transmission belt, thus effectively performing fuel transmission.

Description

Technical Field [0001] The present invention relates to a COAL FEEDER HAVE TENSION CONTROL APPARATUS,

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a charger having a belt tension regulating device, and more particularly, to a charger having a belt tension regulating device capable of automatically controlling a tension of a conveying belt of a conveyer for conveying fuel.

Generally, a coal feeder is a device for continuously supplying coal to a differentiator. When a coal is dropped from a coal silo used as a temporary storage container for coal, The coal is supplied to the pulverizer (Mill) through the pipe.

Also, in the differentiator, the coal supplied through the coal pipe is finely pulverized to a predetermined size to produce pulverized coal.

That is, a series of apparatuses for producing pulverized coal includes a storage tank in which unprocessed coal is temporarily stored, a charger mounted in the lower side of the storage tank so as to communicate with each other in the transverse direction, And finely crushing the fine particles.

Among them, the conveyor of the coal-fired silos is a device for continuously conveying coal placed on the conveyance belt by circulating the conveyance belt, and is made up of a belt having a material such as fabric or steel plate and a head pulley, a tail pulley and a plurality of idlers, And a driving unit using the driving unit.

In addition, the side of the charger is provided with a door for inspecting the inside of the charger, a conveyance belt for conveying coal and a charcoal removing belt for collecting charcoal are arranged side by side, And has a structure in which a pulverized coal pipe having a predetermined diameter is mounted for transfer to a pulverizer.

Such a conveyor belt of the conventional steer tank is loosened due to a change in tension due to seasonal factors or an environment such as a room temperature, and thus, a phenomenon of swelling occurs, whereby fuel such as coal falls in the lateral direction of the conveyor belt And this lowers the feed efficiency of the steaming machine.

Also, loosening of the conveyance belt causes belt damage, pulley wear, and bearing damage.

Korea Public Utility Model No. 20-1999-0017157

The present invention relates to a belt which can prevent the loosening of the conveyance belt of the conveyor belt of the conveyor for conveying the fuel, thereby preventing the loss of fuel due to the shaking of the conveyance belt, And to provide a charger having a tension control device.

The extractor having the belt tension regulating device according to the present invention comprises a casing having an inner space; A conveyor installed inside the casing and including conveyance belts and conveyance drums coupled to both sides of the conveyance belt to rotate the conveyance belt; And a take-up unit connected to one of the conveying drums and moving the position of the conveying drum connected to the conveying belt along the longitudinal direction thereof to adjust the interval between the conveying drums.

In one embodiment, the take-up comprises: a central shaft coupled to a central portion of one of the transfer drums; A moving block coupled to one end or both ends of the central axis; And a housing and a front end portion of a tubular structure fixed to the casing so as to be parallel to the longitudinal direction of the conveyance belt are engaged with the housing and a distal end portion is engaged with the moving block to move the moving block along the longitudinal direction of the conveying belt And a block transporting device having a block transporting rod.

The block transporting device may be configured such that the block transporting rod and the moving block are screwed together so that the moving block advances and retracts when the block transporting rod rotates in the first direction and the second direction.

In addition, the extractor may further include an operating member configured to automatically rotate the block transporting rod with a motor or an electric force, and connected to the block transporting rod.

In addition, the extractor further includes a guide portion for guiding the movement of the moving block, and the guide portion is disposed at the upper and lower portions of the moving block and parallel to the block conveying rod, 2 guide ribs.

In addition, the extractor is provided on the block conveying rods, and measures a load applied to the block conveying rods when the block conveying rods move the moving blocks; And a control unit electrically connected to the load load side unit and controlling the operation of the operating member according to the measured value measured at the load side unit.

In one embodiment, the load-load side comprises: a load cell coupled to the block transport rod; And an indicator that is electrically connected to the load cell and displays a load applied to the block transporting rod measured by the load cell in real time.

According to the charger having the belt tension adjusting device according to the present invention, the tension of the conveyor belt of the conveyor of the charger conveying the fuel can be automatically controlled to prevent the conveyor belt from loosening, So that efficient fuel transfer can be achieved.

In addition, it is possible to reduce the number of maintenance personnel for adjusting the tension of the conveyance belt, monitoring the loosening of the conveyance belt of the ash tanker, and further reducing the labor cost, .

In addition, it is possible to prevent damage to the belt, wear of the pulleys, and damage to the bearings caused by the operation of the charger in a state where the conveyance belt is relaxed, thereby ensuring the stability of the operation of the charger, There is an effect that can be increased.

1 and 2 are a front view and a plan view for explaining the structure of a charger having a belt tension adjusting device according to an embodiment of the present invention.
3 and 4 are an enlarged cross-sectional view and an exploded perspective view of the take-up portion shown in Fig.
5 is an assembled perspective view of Fig.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a charger having a belt tension adjusting device according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings. The present invention is capable of various modifications and various forms, and specific embodiments are illustrated in the drawings and described in detail in the text. It should be understood, however, that the invention is not intended to be limited to the particular forms disclosed, but includes all modifications, equivalents, and alternatives falling within the spirit and scope of the invention. Like reference numerals are used for like elements in describing each drawing. In the accompanying drawings, the dimensions of the structures are enlarged to illustrate the present invention in order to clarify the present invention.

The terms first, second, etc. may be used to describe various components, but the components should not be limited by the terms. The terms are used only for the purpose of distinguishing one component from another. For example, without departing from the scope of the present invention, the first component may be referred to as a second component, and similarly, the second component may also be referred to as a first component.

The terminology used in this application is used only to describe a specific embodiment and is not intended to limit the invention. The singular expressions include plural expressions unless the context clearly dictates otherwise. In this application, the terms "comprises", "having", and the like are used to specify that a feature, a number, a step, an operation, an element, a part or a combination thereof is described in the specification, But do not preclude the presence or addition of one or more other features, integers, steps, operations, components, parts, or combinations thereof.

Unless defined otherwise, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. Terms such as those defined in commonly used dictionaries are to be interpreted as having a meaning consistent with the contextual meaning of the related art and are to be interpreted as either ideal or overly formal in the sense of the present application Do not.

1 and 2 are a front view and a plan view for explaining the structure of a charger having a belt tension adjusting device according to an embodiment of the present invention.

Referring to FIGS. 1 and 2, a charger having a belt tensioner according to an embodiment of the present invention includes a casing 100, a conveyor 200, and a take-up unit 300.

The casing (100) has a space for accommodating the conveyor (200) and the take-up part (300). The casing 100 may be in the form of a polyhedron. For example, the casing 100 may have a rectangular parallelepiped shape. In this case, a fuel inlet 110 into which solid fuel such as solid fuel is injected may be formed on the upper surface of the rectangular parallelepiped casing 100, and a fuel inlet 110 may be formed in the lower surface of the rectangular parallelepiped casing 100, A fuel outlet 120 through which the solid fuel injected from the inlet 110 is discharged may be formed. The fuel injection port 110 may be disposed at the starting position of the solid fuel transfer direction A through the conveyor 200 and the fuel discharge port 120 may be disposed at the end of the fuel transfer direction A. [

The conveyor 200 is installed in the casing 100 through the fuel inlet 110 and conveys the solid fuel injected into the casing 100 toward the fuel outlet 120. The conveyor 200 includes a conveyor belt 210 and conveying drums 221 and 222. [

The conveyance belt 210 has an annular shape and is rotated by the conveying drums 221 and 222 to convey the solid fuel injected through the fuel inlet 110 toward the fuel outlet 120. The conveyance belt 210 may be a flexible material. For example, it may be a rubber material.

The conveying drums 221 and 222 are engaged with the conveying belt 210 to rotate the conveying belt 210. The conveying drums 221 and 222 include a main conveying drum 221 and a driven conveying drum 222. The main conveyance drum 221 is coupled to one end of the annular shape of the conveyance belt 210 and can be rotated by a driving motor (not shown), and the driven conveyance drum 222 is rotated And is rotated together with the driven conveyance drum 222 and the conveyance belt 210 when the conveyance belt 210 is rotated by the driven conveyance drum 222. [ Each of the main conveying drum 221 and the driven conveyance drum 222 can be supported in the side portion of the casing 100 facing the respective opposite ends in the casing 100. [ For example, the main feed drum 221 can be supported in the casing 100 via the shaft, and the driven feed drum 222 can be supported in the casing 100 via the take-

Figs. 3 and 4 are an enlarged cross-sectional view and an exploded perspective view of the take-up portion shown in Fig. 2, and Fig. 5 is an assembled perspective view of Fig.

3 to 5, the take-up unit 300 is connected to any one of the feed drums 221 and 222, moves the position of the feed drum connected thereto along the longitudinal direction of the feed belt 210, And adjusts the interval between the feed drum 221 and the driven feed drum 222. The take-up part 300 may include a central axis 310, a moving block 320, and a block transfer device 330. [

The central axis 310 connects the driven conveying drum 222 with the moving block 320. The center shaft 310 is engaged with the driven conveyance drum 222 so that both ends thereof protrude from both sides of the driven conveyance drum 222. The central axis 310 may be rotated together with the driven conveyance drum 222 and the driven conveyance drum 222 may be rotated and the center axis 310 may not rotate.

The moving block 320 is connected to the driven conveying drum 222 via the central shaft 310 and is connected to the block conveying device 330 to allow the driven conveying drum 222 to move. The movable block 320 may be in the form of a polyhedron and a through hole 320a may be formed in the mutually facing surfaces perpendicular to the plane of the polyhedron. The center axis 310 may be coupled to the through hole 320a, 320 may be connected to the driven conveyance drum 222. The moving block 320 may also include a block transferring rod engaging portion 322 that engages a block transferring rod 332 of a block transferring device 330, which will be described later. The block transferring rod engaging portion 322 may protrude to a predetermined length from one surface of the moving block 320 as shown in FIG. 3 and may be formed with a screw hole 322a. The plurality of moving blocks 320 may be coupled to both ends of the central axis 310, respectively.

The block transfer device 330 may be a plurality of blocks, and each block transfer device 330 transfers the transfer block 320 in parallel with the longitudinal direction of the transfer belt 210. The block transfer device 330 may include a housing 331 and a block transferring rod 332.

The housing 331 has a tubular shape and one side thereof may be fixed to the casing 100 so as to be parallel to the longitudinal direction of the conveyance belt 210.

The front end of the block transferring rod 332 is inserted into the housing 331 and coupled with the housing 331 and the distal end of the block transferring rod 332 can be coupled with the moving block 320.

The block transporting rod 332 and the moving block 320 of this take-up part 300 can be screwed together. The block transferring rod 332 may be formed with a threaded portion 332a at a distal end to be coupled with the moving block 320 and a distal end portion of the screw transferring rod 332 may be screwed into the screw hole 332a formed in the block transferring rod engaging portion 322 of the moving block 320. [ (Not shown). The housing 331 and the bolt head 332b exposed to the outside of the casing 100 may be formed at the end of the block transferring rod 332 coupled with the housing 331 to rotate the block transferring rod 332 have. Here, the block conveying rod 332 may rotate in the first direction and the second direction to move the threaded moving block 320 forward and backward. For example, the first direction may be a rotating direction for moving the moving block 320 in a direction away from the main conveying drum 221, and the second direction may be a moving direction for moving the moving block 320 to the main conveying drum 221 It may be a direction of rotation in which the movable member is moved in a direction approaching the center.

Meanwhile, the extractor having the belt tension adjusting device according to an embodiment of the present invention may further include a guide part 400, a load load side part 500, an operation member 700, and a control part 800. The guide part 400 and the load load side part 500 are shown in Figs. 3 to 5, and the operating member 700 and the control part 800 are shown in Figs. 1 and 2. Fig.

A plurality of guide portions 400 may be provided, and each of the guide portions 400 guides movement of each of the plurality of moving blocks 320. The guide part 400 may include a first guide rib 410 and a second guide rib 420. The first guide rib 410 may be positioned above the moving block 320 and may correspond to the upper surface of the moving block 320 and the second guide rib 420 may be positioned below the moving block 320, (Not shown). One end of the first guide rib 410 and the second guide rib 420 may be fixed to the inside of the casing 100 through bolts and nuts.

The first guide rib 410 and the second guide rib 420 of the guide unit 400 may include a moving block 320 on a surface corresponding to the moving block 320 to stably guide the moving block 320 Guide protrusions 411 and 421 protruding toward the first guide rib 410 and the second guide rib 420 of the moving block 320 may be formed on the surfaces of the first guide rib 410 and the second guide rib 420, A guide groove 321 to be inserted can be formed. The guide groove 321 and the guide protrusions 411 and 421 are fastened and the moving block 320 can stably move along the longitudinal direction of the first guide rib 410 and the second guide rib 420.

The load load side portion 500 may be provided on the block transferring rod 332 to measure a load applied to the block transferring rod 332 when the block transferring rod 332 moves the moving block 320. [ The load-load side portion 500 may include a sleeve 510, a load cell 520, and an indicator 530. The load load side portion 500 can be plural and each load load side portion 500 can measure the load applied to the block transferring rods 332 of each of the plurality of block transfer devices 330. [

The sleeve 510 may be inserted into the housing 331 of the block transfer device 330 and coupled to the block transferring rod 332. The sleeve 510 may include a cylindrical portion 511 surrounding the outer surface of the block transporting rod 332 and an annular portion 512 formed at the end of the cylindrical portion 511. The sleeve 510 coupled to the block transferring rod 332 is coupled to the block transferring rod 332 such that the annular portion 512 is located opposite the position of the bolt head 332b of the block transferring rod 332. In this case, do.

The load cell 520 measures a load applied to the block conveying rod 332. To this end, the load cell 520 is coupled onto the block feed rod 332. The load cell 520 is formed in a ring shape so as to be coupled with the block conveying rod 332, and can be configured to measure the load at the center of the ring shape. When such a load cell 520 is coupled to the block transport rod 332, the load cell 520 is positioned in front of the sleeve 510, at which time the load cell 520 corresponds to the annular portion 512 of the sleeve 510.

A bracket 600 may also be used to secure the load cell 520 in correspondence with the annular portion 512 of the sleeve 510. For example, the bracket 600 includes a fixing plate 610 coupled to the other end of the first guide rib 410 and the second guide rib 420 that is not fixed to the bracket 600, Shaped housing connection portion 620 formed in the housing portion 610. As shown in FIG. In this case, the fixing plate 610 can be coupled to the first guide rib 410 and the second guide rib 420 through bolts and nuts, and the block transferring rod 332 is passed through the housing connecting portion 620 And may be coupled to the housing 331 of the block transfer device 330 and the load cell 520 via screws or bolts.

 With this structure, when the block conveying rod 332 is rotated to pull the moving block 320, the block conveying rod 332 presses the sleeve 510 toward the load cell 520 and presses the sleeve 510 to be pressed The annular portion 512 presses the corresponding portion of the load cell 520 so that the load cell 520 can measure the load applied to the block conveying rod 332.

The indicator 530 is electrically connected to the load cell 520 to display the load applied to the block transport rod 332 measured in the load cell 520 in real time. The indicator 530 may be installed outside the casing 100 to visually check the load of the block conveying rod 332 measured through the load cell 520 from the outside of the casing 100.

The operating member 700 is operated under control by the control unit 800 so that the block conveying rod 332 is automatically rotated. The operating member 700 may be configured to rotate the block transferring rod 332 with a motor or an electric force.

The control unit 800 controls the operation member 700 in accordance with the measured value measured by the load cell 520 to be electrically connected to the load load side unit 500, that is, the load cell 520 so that the block transfer device 330 is operated do. For example, in a state where the conveyance belt 210 in a state of being normally engaged, that is, in the state of being coupled to the conveyance drums 221 and 222, has a tension capable of maintaining a flat state without deflection, The control member 700 can be controlled to rotate the block conveying rod 332 so that the driven conveying drum 222 is pulled. The control unit 800 may be provided with a load applied to the block conveying rods 332 in a state where the conveying belt 210 coupled to the conveying drums 221 and 222 has a tension capable of maintaining a flat state without deflection, And the measured value is a reference value that can be compared with the real time measurement value of the load applied to the block conveying rod 332 inputted from the load cell 520. [

Hereinafter, a description will be given of a process of adjusting the tension of the conveyor belt 210 of the conveyor 200 in a belt tensioner having a belt tensioner according to an embodiment of the present invention. do.

At the beginning of the operation of the charger, the conveyor belt 210 of the conveyor 200 is installed and operated with proper tension so that there is no sagging.

The conveyor 200 in which the appropriate tension of the conveyor belt 210 is maintained is fed from the fuel inlet 110 of the casing 100 to convey the solid fuel placed on the conveyor belt 210 to the conveyor belt 210, Toward the fuel outlet 120 of the casing 100. In the conveyor 200 that operates in this manner to transport the solid fuel, the conveyor belt 210 gradually fizzles with time. That is, the initially held tension of the conveyance belt 210 gradually decreases.

When the tension of the conveyance belt 210 is gradually decreased, the load applied to the main conveyance drum 221 and the driven conveyance drum 222, which are coupled with the conveyance belt 210 to rotate the conveyance belt 210, gradually decreases. At this time, the load applied to the take-up unit 300 connected to the driven conveyance drum 222 also decreases.

That is, the center shaft 310 of the take-up unit 300 is coupled to the driven conveying drum 222, the moving block 320 is coupled to the center shaft 310, The load caused by the tension of the conveyance belt 210 applied to the driven conveyance drum 222 is also transmitted to the block conveyance rod 332 since the block conveyance rod 332 of the block conveyance rod 330 is coupled, The load applied to the block transporting rod 332 is also reduced.

When the load applied to the block transferring rod 332 is reduced, the load cell 520 coupled to the block transferring rod 332 changes the measurement value of the load applied to the block transferring rod 332, The control unit 800 transmits the measurement value of the reduced load to the control unit 800. When the measurement value input from the load cell 520 is smaller than the reference value previously input to the control unit 800, The block transporting rod 332 pulls the moving block 320 in a direction away from the main transporting drum 221 and moves the moving block 320 in a direction in which the moving block 320 moves away from the main transporting drum 221, And the driven conveying drum 222 moves in the direction away from the main conveying drum 221. [

The moving block 320 is moved to move away from the main conveying drum 221 so that the conveyance belt 210 coupled to the driven conveyance drum 222 and the main conveyance drum 221, The tension of the conveying belt 210 is maintained to be flat and the load applied to the block conveying rod 332 also increases so that the weight of the load cell 520 is increased, The load measurement value of the load cell 520 is equal to the load measurement value by the tension held by the first conveyance belt 210, that is, the reference value, and the load measurement value of the load cell 520 at this time is input to the control unit 800, The control unit 800 determines that the value input from the load cell 520 is the same as the reference value previously input to the control unit 800, and enters the standby state in which the operation member 700 is not controlled.

This process is performed every time the tension of the conveyance belt 210 is lowered and the conveyance belt 210 is sagged (relaxed).

In this case, when the conveyance belt 210 for conveying the fuel is loosened, the tension of the conveyance belt 210 is adjusted so that the conveyance belt 210 is always flat It is possible to correct the tension to the state.

In addition, when the conveyance belt 210 is loosened, it is displayed to the outside through the load cell 520 and the indicator 530, so that the charge carrier manager can control the operation state of the charge carrier 210, It is possible to easily confirm whether or not the conveyance belt 210 is stably conveyed and the process of adjusting the tension of the conveyance belt 210 due to the relaxation of the conveyance belt 210 is automatically corrected,

In addition, when the conveyance belt 210 is loosened, the tension of the conveyance belt 210 is immediately adjusted to maintain the conveyance belt 210 in a flat state at all times. As a result, The transfer belt 210 is prevented from being swayed so that the fuel can be efficiently transferred without a problem of falling from the transfer belt 210 and losing fuel.

In addition, since the tension of the conveyance belt 210 is automatically controlled, it is possible to reduce the number of maintenance personnel for monitoring the loosening of the conveyance belt 210 of the conveyance belt 210 and the tension of the conveyance belt 210, As a result, it is possible to reduce the cost of managing the charger.

In addition, belt damage, pulley wear, bearing damage, and the like, which are caused when the conveyance belt 210 is operated in a relaxed state, can be prevented in advance. Thus, the stability of the operation of the extractor is secured, And stability can be increased.

The description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features presented herein.

Claims (7)

A casing having a polyhedron shape having an inner space and including a fuel inlet formed on an upper surface of the polyhedron for injecting solid fuel and a fuel outlet formed on a lower surface of the polyhedron for discharging the solid fuel injected from the fuel inlet;
And a main conveying drum and a driven conveying drum which are installed in the casing so as to convey the solid fuel injected through the fuel inlet and toward the fuel discharge port and are coupled to both sides of the conveyance belt and the conveyance belt to rotate the conveyance belt Conveyors;
A moving block coupled to one side end or both side ends of the center shaft; a tubular housing and a bolt head fixed to the casing so as to be parallel to the longitudinal direction of the conveyance belt; Wherein the bolt head is exposed to the outside of the housing and the other end of the bolt head is screwed to the moving block, the block transferring device including a block transferring device A take-up unit which moves along the longitudinal direction of the conveyance belt to adjust the interval between the main conveyance drum and the driven conveyance drum;
An operating member configured to automatically rotate the block transporting rod with a motor or electric force and connected to the block transporting rod;
A guide portion including first and second guide ribs which are parallel to the block transporting rod and fixed to the casing so as to be disposed at upper and lower portions of the moving block to guide the moving block;
A load load side part installed on the block transferring rod to measure a load applied to the block transferring rod when the block transferring rod moves the moving block; And
And a control unit electrically connected to the load load side unit to control the operation of the operation member according to a measured value measured by the load load side unit,
The load-
A sleeve coupled to the block transferring rod such that the cylindrical portion surrounds an outer surface of the block transferring rod and the annular portion is located opposite the position of the bolt head, the sleeve including a cylindrical portion and an annular portion;
A load cell that is positioned in front of the sleeve and is coupled to the block transferring rod so as to correspond to the annular portion and whose state corresponding to the annular portion is fixed through a bracket coupled with the housing; And
And an indicator that is electrically connected to the load cell and displays a load applied to the block transporting rod measured by the load cell in real time,
Wherein the moving block includes a block conveying rod engaging portion which is polyhedral and has a polyhedron shape and protrudes by a predetermined length and is formed with a screw hole to be engaged with the block conveying rod,
When the block transporting rod is rotated in the first direction, the moving block moves in a direction away from the main transport drum, and when the block transporting rod rotates in the second direction, the moving block moves in a direction approaching the main transport drum,
The block transporting rod pushes the sleeve toward the load cell and the annular portion of the sleeve pressed against the corresponding portion of the load cell when the block transporting rod rotates in the first direction to pull the moving block, Characterized in that the load cell measures a load applied to the block transporting rod,
A charger having a belt tensioning device. delete delete delete delete delete delete

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