JP2016065668A - Sealing device for wind box of sintering machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent over a long period of time, air leakage from both sides of a pallet truck at an end part of a portion that partitions areas of the atmospheric pressure and other than the atmospheric pressure in the passing direction of the pallet.SOLUTION: A sealing device is provided, in which: a vertical plate member 32 is fixed in a suspending state to the rear surface of a base plate 11 configured to be able to continuously press the surface thereof against a lower surface 1a of a pallet truck 1, at an opposing position to each of both width end parts of the pallet truck 1; a vertically movable liner 34 is attached to the outer surface of the vertical plate member 32; a horizontally movable liner 35 is attached to a wear bar support 16 positioned at a lower part opposing to the vertical plate member 32 and each of both width end parts of the pallet truck 1, on an inner surface of the wear bar support parallel to an advancing direction of the pallet truck 1, in such a manner that the pallet truck 1 is movable in the width direction; and the horizontally movable liner 35 is pushed against the side surface of the vertically movable liner 34 by using a force generated by a pressure difference between the atmospheric pressure and a pressure other than the atmospheric pressure.EFFECT: According to the invention, air leakage which is unnecessary for sintering reduces, thus the power is saved.SELECTED DRAWING: Figure 1

Description

  The present invention is a place where the lower surface of an endless continuous conveyance carriage in the shape of a pallet carriage moving on a rail passes through a portion that divides a place where atmospheric pressure and atmospheric pressure are below, and the flow of air or gas is blocked. The present invention relates to a device for sealing both sides of the carriage in the width direction of the carriage, particularly at the end of the partitioning portion in the direction in which the carriage passes.

  Examples of the equipment provided with the endless continuous conveyance carriage include a wind box of a sintering machine that manufactures sintered ore used as a blast furnace raw material, and a cooler that cools high-temperature sintered ore.

  For example, in a sintering machine, while a plurality of pallet trucks are adjacent and travel endlessly on a rail, as shown in FIG. 2, atmospheric pressure is generated by a wind box 2 disposed below the traveling pallet truck 1. The following negative pressure is formed, and iron ore loaded on the pallet truck 1 is continuously fired. In FIG. 2, 3 is a raw material tank, 4 is an ignition furnace, 5 is an electric dust collector, 6 is an exhaust fan, and 7 is a chimney.

  In such a sintering machine, it is possible to shut off the end of the group of wind boxes 2 forming the negative pressure and the area on the atmospheric pressure side so that air that is ineffective for firing or cooling does not flow into the wind box 2. This is important for reducing the power of the exhaust fan 6. Therefore, the sealing device 8 has been conventionally installed at the feed end and the discharge end of the sintering machine (for example, Patent Documents 1 to 7).

  However, in the case of conventional sealing devices, it has been difficult to achieve both a function of preventing air leakage and a function of maintaining performance for a long time.

  Therefore, Patent Document 8 has been proposed as a sealing device that can prevent air leakage as long as possible.

The sealing device proposed in Patent Document 8 will be described with reference to FIGS.
That is, in the sealing device proposed in Patent Document 8, for example, a base plate 11 that constantly presses the surface of the lower surface 1a of the pallet carriage 1 is formed into one film plate, and an abrasion-resistant liner 12 is attached to the surface. Yes.

  For example, the base plate 11 is pressed against the lower surface 1a of the pallet truck 1 so that the base plate 11 can swing up and down at two locations in the front and rear of the pallet truck 1 in the direction of travel (indicated by the white arrow in FIG. 3). This is done by lifting the other end of the bell crank 21 by a weight 22 attached to the one end. A roller 23 is rotatably attached to the other end of the bell crank 21.

  In addition, a first vertical plate 13a is fixed on the back side of the base plate 11 in the traveling direction of the pallet carriage 1, and a second vertical plate 13b is fixed on both sides in the width direction. And the receiving member 14 which supports the said 1st vertical board | plate material 13a from the wind box side with the roller 14a is installed in the receiving beam 15 which supports the wind box 2. As shown in FIG.

  In addition, while attaching the fixed liner 17 to the inner side of the wearer bar support 16 positioned below both sides in the width direction of the pallet carriage 1 and parallel to the traveling direction of the pallet carriage 1 (the direction from the front to the back in FIG. 4), A movable liner 18 is attached to the back surface of the base plate 11 and outside the second vertical plate member 13b. Then, the upper end surface of these fixed liners 17 and the lower end surface of the movable liner 18 are fitted in an uneven shape, and grease is supplied from a grease supply port 16a provided in the wear bar support 16 to the gap d1 of the uneven fitting. Yes.

  Further, both liners 17, from the inside of the first vertical plate member 13 a to the fixing plate 19 installed on the first vertical plate member 13 a side of the receiving beam 15 and from the inside of the second vertical plate member 13 b, Between 18 and the side of the wear bar support 16, a cloth-like member 20 coated with a viscous paste-like substance is stretched on the atmospheric pressure side of the surface.

  However, in the case of the seal structure on both sides in the width direction of the pallet carriage proposed in Patent Document 8, the grease supplied to the gap between the concave and convex fitting between the fixed liner and the movable liner is gradually blown off due to the pressure difference and the sealing performance is lowered. Therefore, it is necessary to always supply grease.

  In addition, a certain gap d2 (see FIG. 4 (a)) is required between the wear bar support and the movable liner in order to secure a thermal expansion allowance due to a temperature change, but the grease from this gap d2 is reduced. The amount of leakage of air containing dust increases. And since the air containing this dust passes the said clearance gap d2 at high speed, the lifetime of an uneven | corrugated fitting part becomes short.

JP-A-9-68389 Japanese Utility Model Publication No.59-14000 Japanese Utility Model Publication No. 59-76992 Japanese Utility Model Publication No. 62-19910 Japanese Patent Laid-Open No. 60-200084 JP-A-11-281261 Japanese Utility Model Publication No.59-30395 JP 2012-247088 A

  The problem to be solved by the present invention is that the sealing device proposed in Patent Document 8 is fixed in the case of the seal structure on both sides in the width direction of the pallet carriage at the end of the windbox group in the direction in which the pallet carriage passes. In order to ensure the sealing performance of the concave-convex fitting portion between the liner and the movable liner, it is necessary to always supply grease. In addition, the grease decreases from the gap between the wear bar support and the movable liner, and the dust-containing air passes at high speed, so that the life of the concave-convex fitting portion is shortened.

The present invention
In particular, the section where the lower surface of the endless continuous transporting carriage constituted by adjoining a plurality of pallet trucks moving on the rail passes while sliding on a part that divides the atmospheric pressure and a place other than the atmospheric pressure. In order to be able to prevent air leakage from both sides in the width direction of the endless continuous transport carriage as long as possible at the end of the portion in the direction in which the endless continuous transport cart passes.
A seal device for blocking air or gas flow on both sides in the width direction of the endless continuous transport carriage at the end of the partitioning portion in the direction in which the endless continuous transport cart passes.
The surface of the base plate that is configured so that the surface to which the wear-resistant liner is attached can be always pressed against the lower surface of the endless continuous conveyance carriage, is perpendicular to the positions opposite to both sides of the endless continuous conveyance carriage in the width direction on the back surface. While fixing the plate material in a suspended state,
Covering the gap between the vertical plate and the side surface of the wear bar support positioned below the opposite sides in the width direction of the endless continuous conveyance carriage with a cloth-like member having no heat permeability and having heat resistance,
A vertical movable liner is provided on the outer surface of the vertical plate member, and the inner surface of the wear bar support parallel to the advancing direction of the endless continuous conveyance carriage is movable in the width direction of the endless continuous conveyance carriage. The main feature is that each of the movable liners is attached and the horizontal movable liner is pressed against the side surface of the upper and lower movable liners by a force generated by a pressure difference between the atmospheric pressure and a pressure other than atmospheric pressure.

  The present invention provides a wear bar support parallel to the traveling direction of the endless continuous conveyance carriage on the side surface of the vertically movable liner attached to the outer surface of the vertical plate fixed to the opposite sides of the widthwise both sides of the endless continuous conveyance carriage. A horizontal movable liner that can move in the width direction of the endless continuous carriage is attached to the inner surface. Therefore, the force generated by the pressure difference between the atmospheric pressure and the pressure other than atmospheric pressure presses the horizontal movable liner against the side of the upper and lower movable liners, thereby creating an endless continuous portion that separates the area other than atmospheric pressure and atmospheric pressure. Air leakage from both sides in the direction of travel of the endless continuous conveyance carriage is prevented at the end in the direction in which the conveyance carriage passes.

  The present invention adopts a structure that mechanically prevents air leakage from both sides in the traveling direction of the endless continuous conveyance carriage at the end in the direction in which the endless continuous conveyance carriage passes through the part that divides the place other than atmospheric pressure and atmospheric pressure. Therefore, there is less air leakage unnecessary for sintering, and power saving can be achieved. Moreover, the durability of the seal portion is improved by using a wear-resistant material for the contact surface between the horizontal movable liner and the upper and lower movable liners.

It is a principal part enlarged view of the sealing device of this invention. It is the schematic explaining the installation position to the sintering machine of the sealing apparatus of this invention. It is the principal part enlarged view seen from the cart advancing direction side of the sealing device proposed by patent document 8. FIG. (A) is the principal part enlarged view seen from the trolley | bogie advancing direction of the sealing apparatus proposed by patent document 8, (b) is explanatory drawing of a liner.

  In the present invention, endless continuous conveyance at the end in the direction in which the endless continuous conveyance carriage constructed by adjoining a plurality of pallet carriages moving on the rail at a portion that divides the atmospheric pressure and a place other than atmospheric pressure passes The purpose is to prevent air leakage from both sides in the width direction of the carriage for as long as possible. And the purpose of the endless continuous conveyance cart of the wear bar support is set on the side of the vertical movable liner attached to the outside of the vertical plate fixed at the position facing the both sides in the width direction of the endless continuous conveyance cart. This was realized by attaching a horizontal movable liner that can move in the width direction of the endless continuous carriage on the parallel inner surface.

  Hereinafter, an embodiment in which the sealing device of the present invention is applied to a wind box of a sintering machine will be described with reference to FIG.

  For example, as shown in FIG. 2, the sealing device 31 of the present invention is installed at the feed end and the discharge end of the sintering machine, and both sides in the width direction of the pallet truck 1 moving from the feed side to the discharge side. This prevents air from leaking out.

  That is, the sintered dust is passed through between the side surfaces 16b in the width direction of the pallet truck 1 and the surface 16b on the base plate 11 side of the wear bar support 16 that is positioned below the both sides in the width direction of the pallet truck 1. The accompanying air is prevented from leaking.

  Therefore, in the present invention, between the vertical plate 32 fixed on the back surface of the base plate 11 on both sides in the width direction of the pallet truck 1 and the surface 16b of the wear bar support 16 on both sides in the width direction of the pallet truck 1 in the present invention. The gap d2 is sealed as follows.

  The base plate 11 that constantly presses the surface against the lower surface of the pallet carriage 1 is composed of a single plate that is sufficiently thin (approximately 9 mm) so as to be able to bend in the width direction of the pallet carriage 1, and is resistant to the surface. While the abradable liner 12 is attached, the vertical plate member 32 is fixed to the back surface.

  In FIG. 1, in order to make the base plate 11 bend easily in the width direction of the pallet carriage 1, the wear-resistant liner 12 is divided into a plurality of pieces and attached in the width direction of the pallet carriage 1.

  In the present invention, the gap d3 existing between the vertical plate member 32 and the surface 16b of the wear bar support 16 has no air permeability and heat resistance, and has a viscous surface such as silicon sealant on the atmospheric pressure side of the surface. It is covered and covered with a cloth-like member 33 coated with a certain paste-like substance.

  In the present invention, the vertically movable liner 34 is integrally attached to the outer surface of the vertical plate member 32, and the pallet carriage 1 can be moved in the width direction on the surface 16b side of the wear bar support 16. A horizontal movable liner 35 is attached to the main body.

  In FIG. 1, the horizontal movable liner 35 has a width of the pallet truck 1 by an upper guide member 36 fixed to the tip of the wear bar 24 installed on the upper surface of the wear bar support 16 and a lower guide member 37 fixed to the surface 16b. It shows what guides the movement in the direction. Note that reference numeral 25 in FIG. 1 denotes a seal bar provided on the upper surface of the wear bar 24.

  With this configuration, the horizontal movable liner 35 is pressed against the vertical movable liner 34 with a force generated by the pressure difference between the atmospheric pressure and the negative pressure, and both side surfaces in the width direction of the pallet carriage 1 and the wear bar support. The gap d2 between the 16 surfaces 16b can be sealed to prevent air leakage, and power saving can be achieved.

  In addition, since the cloth-like member 33 closes the gap d3 existing between the inner side of the vertical plate 32 and the side surface of the wear bar support 16, the sealing performance can be further improved.

  In the case of the present invention configured as described above, in order to improve the life of the contact surface portions of the upper and lower movable liners 34 and the horizontal movable liner 35, the contact surface portions of both the liners 34 and 35 are made of an abrasion-resistant material such as alumina (Al2O3). ) And silicon nitride (Si3N4) are desirable.

  In FIG. 1, grease supply ports 16 a are provided at a plurality of locations on the wear bar support 16 to supply grease between the wear bar support 16 and the horizontal movable liner 35 from the outer surface (atmospheric pressure side).

  In the case of such a configuration, the horizontal movable liner 35 can be pressed against the upper and lower movable liners 34 by supplying grease, and the adhesion between both the liners 34 and 35 can be improved. Moreover, since the leaked grease improves the adhesion between the liners 34 and 35, the air leakage can be further eliminated.

  It goes without saying that the present invention is not limited to the above-described examples, and the embodiments may be appropriately changed within the scope of the technical idea described in each claim.

  The present invention is a sealing device 31 for preventing air leakage from both sides in the width direction of the pallet carriage 1, and the sealing device at the front end side in the traveling direction of the pallet carriage 1 is not particularly limited. The structure described in FIG. 3 may be employed.

DESCRIPTION OF SYMBOLS 1 Pallet trolley 1a Lower surface 11 Base plate 12 Wear-resistant liner 16 Wear bar support 16a Grease supply port 31 Sealing device 32 Vertical plate material 33 Cloth-like member 34 Upper limit movable liner 35 Horizontal movable liner d2 Between the wear bar support 16 and the vertical plate material 32 Gap

In the case of the present invention configured as described above, in order to improve the life of the contact surface portions of the upper and lower movable liners 34 and the horizontal movable liner 35, the contact surface portions of both the liners 34 and 35 are made of an abrasion resistant material such as alumina ( Al It is desirable to use ceramics such as ₂ O ₃ ) or silicon nitride ( Si ₃ N ₄ ).

Claims (3)

A portion where the lower surface of an endless continuous conveyance carriage constituted by adjoining a plurality of pallet trucks moving on the rail passes while sliding on a portion that divides the atmospheric pressure and a place other than the atmospheric pressure, and the partitioning portion A sealing device that blocks air or gas flow on both sides in the width direction of the endless continuous conveyance carriage at the end in the direction in which the endless continuous conveyance carriage passes.
The surface of the base plate that is configured so that the surface to which the wear-resistant liner is attached can be always pressed against the lower surface of the endless continuous conveyance carriage, is perpendicular to the positions opposite to both sides of the endless continuous conveyance carriage in the width direction on the back surface. While fixing the plate material in a suspended state,
Covering the gap between the vertical plate and the side surface of the wear bar support positioned below the opposite sides in the width direction of the endless continuous conveyance carriage with a cloth-like member having no heat permeability and having heat resistance,
A vertical movable liner is provided on the outer surface of the vertical plate member, and the inner surface of the wear bar support parallel to the advancing direction of the endless continuous conveyance carriage is movable in the width direction of the endless continuous conveyance carriage. A sintering machine window characterized in that each of the movable liners is attached and the horizontal movable liner is pressed against the side of the upper and lower movable liners by a force generated by a pressure difference between atmospheric pressure and a pressure other than atmospheric pressure. Box sealing device.   The seal device for a sintering machine window box according to claim 1, wherein a grease supply port for supplying grease between the wear bar support and the horizontal movable liner is provided in the wear bar support.   The sealing device for a sintering machine window box according to claim 1 or 2, wherein a contact surface portion between the upper and lower movable liners and the horizontal movable liner is made of an abrasion-resistant material.

Images