KR20040102728A - Device for carrying shot ball in shot ball blaster - Google Patents

Abstract

PURPOSE: To provide a device for carrying shot balls in shot ball blaster to prevent facility damage and facility accident due to interference between bucket and conveyor by smoothly carrying shot balls in the state that the bucket for carrying the shot balls is removed. CONSTITUTION: The device comprises a vertical conveyor(20) vertically installed between a supply chute(14) for supplying shot balls to duct(11), and projectors(10) of the shot ball blaster; driving roll(21) and driven roll(22) installed upper and lower parts of the inner side of the vertical conveyor; driving motors(23) connected to the driving roll to rotate the driving roll; a transfer belt(24) rotatably extended over the driving roll and the driven roll; and magnetic force means(31) installed on the inner surface of the transfer belt to adhere the shot balls to the transfer belt.

Description

Device for carrying shot ball in shot ball blaster}

The present invention relates to a shot blasting machine for stripping scales of strips, and more particularly, to a shot blasting apparatus for shot blasts which is capable of smoothly transporting the projected shot balls.

In general, the strip passed through the continuous annealing furnace in the production process of stainless steel hot rolled coil passes through the shot blaster, which is a descaler, to increase the strip surface pickling property in the pickling tank installed at the rear stage by peeling the scale layer formed on the strip surface Done.

The shot blaster is a facility for projecting a small metal ball (hereinafter referred to as a shot ball) onto a strip surface by peeling a scale layer through a wheel that rotates at a high speed. As shown in FIG. The shot ball projecting unit and the shot ball recovery unit for recovering the projected shot ball can be largely divided, wherein the shot recovery unit is the inclined hopper 120 and the inclined hopper 120 which is installed at the bottom of the duct 110 through which the strip 200 is passed. ) Is installed at the bottom of the transfer screw 121 for moving the shot ball, the hopper 120 is connected to the vertical conveyor 130 for vertical movement to receive the shot ball moved through the transfer screw 121, vertical conveyor 130 A horizontal passage 140 and a vertical passage 150 for moving the shot ball, which is connected to the vertical conveyor 130, in the strip width direction to be reinserted into the shot ball thrower, are included.

Therefore, the shotball is projected onto the strip by the shot thrower and then gathered into the hopper, moved to the vertical conveyor along the transfer screw installed in the hopper, and contained in the bucket installed on the vertical conveyor and transported upwards.

However, in the above-described shot blaster of the conventional structure, as the joint between the bucket and the conveyor is frequently damaged in the process of recovering the shot ball projected through the shot ball thrower, the amount of shot ball is transferred and supplied to the upper part is significantly lowered. Frequently occurring, there is a problem that a large facility accident occurs by the falling bucket caught on the rotating conveyor.

Accordingly, the present invention has been made in order to solve the above problems, and by removing the bucket for transporting the shot ball to smoothly transport the shot ball equipment damage and equipment accidents caused by interference between the bucket and the conveyor It is an object of the present invention to provide a shot conveying apparatus of a shot blaster which can be prevented.

1 is a partial cutaway perspective view showing a shot blast shot ball is installed in accordance with the present invention,

2 and 3 is a partial detailed view of the shotball transport apparatus according to the present invention,

Figure 4 is a perspective view of a shot blaster according to the prior art.

Explanation of symbols on the main parts of the drawings

10: thrower 11: duct

12: inclined hopper 13: feed screw

14: supply chute 15: discharge pipe

20: vertical conveyor 21: drive roll

22: driven roll 23: drive motor

24: conveying belt 25: rotary roll

26: guide roll 27: ramp

30 belt 31 magnet member

40: dispersion plate 41: dispersion guide groove

42: air hose 43: air tube

44: injection nozzle

In order to achieve the above object, the shot ball conveying apparatus of the present invention includes a vertical conveyor for raising a used shot ball, a conveying belt rotatably installed inside the vertical conveyor, and installed on the inner side of the conveying belt. Magnetic means for attaching to the transfer belt.

In addition, the present invention may further include a dispersing input means for evenly dispersing the shot ball introduced into the lower side of the vertical conveyor to the conveying belt surface.

Accordingly, the shot ball attached to the magnetic force means with the transfer belt interposed therebetween can be smoothly transferred upward along the rotating transfer belt.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is a partially cutaway perspective view showing a shot blast in which a shot ball feeding device according to the present invention is installed, and FIGS. 2 and 3 are detailed views of the shot ball feeding device according to the present invention.

According to the above-described drawings, the shot blaster includes a shot projector including a thrower 10 for projecting the shot ball onto the upper and lower surfaces of the strip through a high-speed rotating wheel; The inclined hopper 12 installed at the lower end of the duct 11 of the descaler facility through which the strip passes, and the transport screw 13 and the transport screw installed inside the hopper 12 to move the shot ball. 13 is connected to the top of the vertical conveyor (20) for receiving the shot ball moved through the transfer screw (13), vertical conveyor (20) is connected to the upper portion of the vertical conveyor (20) to take a shot shot up the shot ball throwing shotball It consists of a supply chute 14 for re-insertion into the machine 10 and the shot recovery unit including a discharge pipe 15 is installed in the lower supply chute 14 to supply the shot ball to the shot thrower (10).

Wherein the shot conveying device of the present invention is a shot blaster of the above-described structure, the vertical conveyor 20, the drive roller 21 and the driven roll 22 installed on the upper and lower ends of the vertical conveyor 20, the said A drive motor 23 connected to the drive roll 21 to rotate the drive roll 21, a transfer belt 24 rotatably installed across the drive roll 21 and the driven roll 22, the transfer Magnetic means for attaching the shot ball to the conveying belt 24 and is installed on the inner side of the belt 24, and for dispersing and evenly dispensing the shot ball introduced into the lower inlet of the vertical conveyor 20 on the surface of the conveying belt 24 Dispersion input means is included.

The magnetic force means has a belt 30 that rotates across the drive roll 21 and the driven roll 22, and a plurality of magnet members 31 installed in the width direction at regular intervals along the belt 30. Include.

Therefore, the transfer belt 24 and the belt 30 spanning the driving roll 21 and the driven roll 22 in a state where the shot ball is attached to the magnet member 31 installed on the belt 30 with the transfer belt 24 interposed therebetween. ) Is to move the shot ball attached to the conveying belt 24 while moving at the same speed to the top.

Preferably, the transfer belt 24 is made of a steel mesh of steel material.

In order to drop the shot ball transported to the upper portion from the magnet member 31, it is necessary to space the distance between the transfer belt 24 and the belt 30 on which the magnet member 31 is installed. On the upper portion of the 20, the rotary roll 25 is provided at a predetermined distance from the driving roll 21 so that only the conveying belt 24 is covered.

Therefore, in the vertical rise section between the driving roll 21 and the driven roll 22 of the vertical conveyor 20, the transfer belt 24 and the magnet member 31 of the belt are rotated in close contact with each other, and the other driving roll 21 is rotated. And the transfer belt 24 is spaced apart from the magnet member 31 in the section between the rotary roll 25.

Unexplained reference numeral 26 is a guide roll installed on one side of the vertical conveyor to guide the conveying belt 24 through the rotary roll 25 toward the driven roll 22.

The rotary roll 25 is positioned slightly lower than the driving roll 21 so that the transfer belt 24 passing between the driving roll 21 and the rotary roll 25 is inclined downward toward the rotary roll 25. This is to allow the shot ball separated from the magnet member 31 to smoothly roll along the inclined transfer belt 24 due to the decrease in magnetic force.

In addition, the vertical conveyor 20 is provided with a ramp 37 for collecting and guide the shot ball falling through the rotary roll 25 at the lower end of the rotary roll 25.

According to the present embodiment, the transfer motor 24 and the driving motor 23 for rotating the belt are provided separately, respectively, the driving motor 23 is connected to the driving roll 21 and the rotary roll 25, respectively. It is installed, the sprocket wheel 28 is installed on the axis of rotation of the drive motor 23, the drive roll 21 and the rotary roll 25 is connected to the chain 29 has a structure for transmitting power.

On the other hand, the dispersing input means is a dispersion plate 40 is installed between the transfer screw 13 and the lower inlet of the vertical conveyor 20 for transferring the shot balls collected in the inclined hopper 12, the dispersion plate 40 The inner bottom surface includes a plurality of dispersion guide grooves 41 are formed in the radial direction toward the inlet on the basis of the exit of the transfer screw 13 to guide the progress of the shot ball.

Therefore, the shot ball coming out of the transfer screw 13 is evenly spread along the dispersion guide groove 41 of the distribution plate 40 is evenly attached over the front of the transfer belt 24.

Here, the dispensing input means is connected to the air hose 42 which is supplied with air to the side of the dispersion plate 40 for smooth injection of the shot ball, the air hose 42 at the inlet side of the dispersion plate 40 ), An air pipe 43 is provided, and the air pipe 43 has a structure in which an injection nozzle 44 for injecting air into the shot ball toward the transfer belt 24 is further formed.

Accordingly, the air supplied through the air hose is injected to the shot ball flowing down the dispersion guide groove through the injection nozzle formed in the air pipe to help the movement of the shot ball and attachment to the conveying belt.

Hereinafter will be described the operation of the present invention.

The shot ball projected onto the strip surface by the shot thrower 10 is dropped to the lower part of the duct of the descaler facility and moved to the vertical conveyor 20 through the transfer screw 13 installed at the lower part, and then rides the vertical conveyor 20. Moved to the upper portion is collected in the supply chute 14 installed on the vertical conveyor (20). And it is re-introduced into the thrower 10 through the discharge pipe 15 installed in the lower supply chute 14.

In this process, the shot ball transferred to the lower end of the vertical conveyor 20 by the transfer screw 13 is discharged from the exit side to the distribution plate 40 from the transfer screw 13.

Dispersion guide groove 41 is formed in the bottom surface of the dispersion plate 40, the shot ball spreads along the dispersion guide groove 41 at the exit side of the transfer screw 13 to face the inlet of the vertical conveyor 20. do.

Therefore, the shot ball is evenly distributed over the front side of the conveying belt 24 through the inlet of the vertical conveyor 20, and the shot ball thus introduced is conveyed by the magnetic force of the magnet member 31 installed inside the conveying belt 24. 24) is attached.

Here, the transfer belt 24 and the magnet member 31 in contact with the inside of the transfer belt 24 are rotated at the same speed and direction, and when the driving motor 23 is rotated, respectively, through the sprocket wheel and the chain. Power is transmitted to the driving roll 21 and the rotary roll 25 to rotate the belt 30 and the transfer belt 24 at the same speed, respectively.

Accordingly, in the vertical rising section between the driving roll 21 and the driven roll 22, the transfer belt 24 and the magnet member 31 attached to the inner belt 30 are moved in the same state in contact with each other. Therefore, the shot ball introduced into the transfer belt 24 through the inlet of the vertical conveyor 20 may be moved along the transfer belt 24 in a state in which it is attached to the transfer belt 24 by the magnetic force of the magnet member 31. It is.

After the shot ball attached to the magnet member 31 with the transfer belt 24 therebetween is pulled up to the driving roll 21 on the top of the vertical conveyor 20, the magnet member 31 and the transfer belt 24 are separated. It flows down along the transfer belt 24 to fall down the rotary roll (25).

That is, the belt 30 provided with the magnet member 31 rotates along the drive roll 21 and the driven roll 22, and the transfer belt 24 is disposed between the drive roll 21 and the rotary roll 25. Since passing through the driving roll 21, the magnet member 31 and the conveying belt 24 are separated from each other and away.

Therefore, the shot ball attached to the transfer belt 24 by the magnetic force of the magnet member 31 is freed from the transfer belt 24 as the magnetic force of the magnetic member 31 is weakened so that it flows down the transfer belt 24. Will be.

The shot ball flowing down the transfer belt 24 is dropped through the rotary roll 25 and sent to the supply chute 14 through the ramp installed below the rotary roll 25, and then through the discharge pipe 15, the thrower 10. It is injected into).

According to the shot ball feeding apparatus of the shot blaster according to the present invention as described above, it is possible to smoothly transfer the shot ball in the vertical conveyor 20, it is possible to prevent the short-ball supply shortage phenomenon.

In addition, smooth descaling can improve the pickling properties of the strip during the pickling process, which is a post-process, and improves the surface roughness of the strip after pickling is completed.

In addition, due to the simplification of the facility, it is possible to prevent equipment accidents caused by dropping of the conventional buckets, and to save time and labor according to the accident measures.

Claims (4)

A vertical conveyor installed vertically between the duct of the shot ball blaster and the supply chute supplying the shot ball to the thrower, and a driving roll and driven roll installed at the upper and lower ends of the vertical conveyor, the driving roll being connected to the driving roll to rotate the driving roll. Shot blasting apparatus of shot blasting apparatus for transferring shot ball, including a motor, a transfer belt rotatably installed across the driving roll and driven roll, and a magnetic force means installed on the inner side of the transfer belt to attach the shot ball to the transfer belt. . According to claim 1, wherein the magnetic means comprises a belt that rotates across the drive roll and the driven roll, and a plurality of magnet members installed in the width direction at a predetermined interval along the belt in contact with the inner surface of the transfer belt Short shot feeder of the shot blaster, characterized in that. According to claim 1 or 2, wherein the rotary roll is installed on the vertical conveyor spaced apart from the driving roll by a predetermined distance, the conveying belt is rotated over the rotating roll through the driving roll, the shot ball transported to the upper portion Shot ball blaster of the shot blaster, characterized in that the dropping from the magnet member. According to claim 1 or 2, wherein the dispersion plate is installed between the transfer screw for transferring the shot balls collected in the duct to the vertical conveyor inlet and the bottom inlet of the vertical conveyor, and the transfer screw outlet on the inner bottom surface of the distribution plate Shotgun blasting apparatus for a shot blaster, characterized in that it further comprises a dispersing input means for dispersing the shotball including a plurality of dispersion guide grooves formed in a radial direction toward the entrance.