KR200286994Y1 - Device for protecting air leakage between the wind box and the sintering car in a sintering machine - Google Patents

Abstract

The present invention relates to an uneven multiple air blocking device of a sintering machine, the technical configuration of which comprises a trolley 20 provided with a traveling wheel 21 for traveling on a running rail 22; A wind box 40 provided at a lower portion of the trolley 20 to suck air; A support (41) fixed in the longitudinal direction along the upper surface of the windbox (40); A lower side is fixed along the support 41, and a protrusion 161 is elongated in the longitudinal direction at the center of the upper surface, and an uneven wear ring bar 160 having a long copper passage 163 toward the upper surface; The contact surface 152, 153, 154 which is in surface contact with the upper surface of the wear ring 160, is fixed to the lower surface of the trolley 20, the seal bar 150 is mounted on the outer upper portion of the compression spring 70 It is characterized by comprising:

Description

Device for protecting air leakage between the wind box and the sintering car in a sintering machine

The present invention relates to an uneven multi-type air shutoff device of a sintering machine, and in particular, in order to block air leakage generated inside the windbox by internal pressure of the truck running track during sintering operation, It relates to an air blocking device for preventing the inflow.

In general, as shown in Figure 1, the sintering operation in the steel mill, the blended raw material mixed with various raw materials and fuel (coke) is charged to the sintering machine truck 20 by the blending raw material charging device 10, the blending The raw material-loaded sintering machine trolley 20 proceeds along the running rail 22 and passes through the ignition furnace 30, whereby the blended raw material is ignited as it is baked. The raw material hardened by the above-mentioned process is transferred to a blast furnace process.

The blended raw material ignited in the sintering furnace 30 during the sintering operation described above is plastically compacted through a downward suction suction sintering device composed of a wind box and a blowing means using a blower.

While the top-down suction sintering method has the advantage of being able to mass-produce by continuous operation, the quality of the sintered ore due to the leakage air generated during the blowing process, that is, the air outside is introduced into the gap between the bogie and the windbox. And there is a problem that has a lot of adverse effects on production management.

Therefore, in the top-down suction sintering method, a device that prevents leakage of air in the sintering operation is used, and the conventional technique for preventing leakage of air, as shown in Figures 2 and 3, air for sintering sintering machine bogie In order to be sucked into the wind box 40 only through the bottom of the (20) is used a device for sealing between the wind box 40 and the lower surface of the trolley 20.

In detail, the device is formed on the upper surface of the wind box 40 and the contact portion of the trolley 20 in the same direction as the trolley driving direction and is formed and fixed. The grease passage 61 into which grease is introduced is provided on the upper surface of the wind box 40. Wearing bar (60) provided with a surface, in contact with the upper surface of the wear bar 60, and consists of a seal bar (seal bar 50) fixed to the lower surface of the trolley 20 seal bar (50) It is a structure to prevent leakage by sealing between the trolley 20 and the wind box 40 by the surface contact of the wear ring bar 60. In addition, the grease, which is forcibly injected into the grease passage 61 provided on the upper surface of the wear ring bar 60, smoothly slides between the seal bar 50 and the wear ring bar 60 during sliding of the trolley 20. At the same time helps to form an oil film to maintain the airtight.

On the other hand, referring to the embodiment according to the prior art with reference to Figure 4, as shown in Figure 4 (a), the method of closely contacting the seal bar and the wear ring bar, the seal bar in contact with the wear ring bar by its own weight between the seal bar and the wear ring bar As a way to prevent leakage by sealing the, the technical configuration of the contact surface between the seal bar 50 and the wear ring bar 60 to form a diagonal, and the contact surface of the wear ring bar 60 to form a grease passage to seal the way On the other hand, the method of Figure 4 (b), by pushing the seal bar to the lower side on the upper surface of the seal bar 50 is provided with a spring 70 to increase the contact between the seal bar 50 and the wear ring bar 60 by the spring It is a close method.

However, these conventional technologies, since the contact surface between the seal bar and the wear ring bar is formed in a single plane and grounded, even if only a minute gap occurs, air is directly introduced into the wind box, resulting in a reduction in the effective air volume. As a result, the sintering time delay and grease on the feed surface due to the inflow air flows into the windbox together with the air, and there is a problem of increasing the wear of the seal bar and the wear ring bar and increasing the consumption of the grease.

Therefore, the present invention was devised to solve the above problems, and forms a contact surface between the seal bar and the wear ring bar in a multi-stage plane, so that when the airtightness is not maintained at the first-stage contact surface, the two-stage and three-stage contact surfaces By maintaining the airtightness, it prevents air inflow between the seal bar and the wear ring bar, preventing sintering time delay, preventing the grease from entering the wind box, and reducing the wear and grease consumption of the seal bar and the wear ring bar. There is this.

1 is a schematic configuration diagram of sintering,

2 is a partial perspective view of a conventional sintering machine bogie,

3 is a partial cross-sectional view of a conventional sintering machine bogie,

4A is a cross-sectional view of a self-weight seal bar that is a conventional sinterer air shutoff device

4B is a cross-sectional view of a spring compression seal bar that is a conventional sintering device air shutoff device,

5 is a cross-sectional view of the sintering machine bogie equipped with the present design,

6 is an exploded perspective view of the present invention,

7 is a cross-sectional view showing the fixing of the seal bar of the present invention,

8 is a detailed view showing an operating state of the present invention.

Explanation of symbols on the main parts of the drawings

10: charging device 20: cart 21: driving wheel

22: running rail 30: ignition furnace 40: windbox

41: support 50: seal bar 60: wear ring bar

61: grease passage 70: compression spring

150: uneven seal bar 151: coupler 152: primary contact surface

153: secondary contact surface 154: tertiary contact surface 155: primary air pocket

156: secondary air pocket 160: uneven wear ring bar

161: protrusion 162: horizontal plane 163: grease passage

170: seal bar fixing plate 171: hook 172: incision

In order to solve the above technical problem, the uneven multiple air blocking device of the sintering machine according to the present invention, a trolley having a traveling wheel for traveling on the running rail; A wind box provided at a lower portion of the bogie to suck air; A support fixed in the longitudinal direction along an upper surface of the windbox; A concave-convex wear ring bar having a lower side fixed along the support and having a protruding portion formed in a longitudinal direction at the center of the upper surface, and having a long copper passage toward the upper surface; A contact surface which is in surface contact with the upper surface of the wear ring bar is provided, and is fixed to the lower surface of the bogie, characterized in that the outer upper portion is provided with a seal bar mounted with a compression spring.

Hereinafter, described in detail with reference to the drawings.

As shown in FIG. 5, the air blocking device according to the present invention includes a trolley 20 having a traveling wheel 21 for traveling on a running rail 22, and a blower at a lower portion of the trolley 20. A blower is provided which sucks air and a downward suction suction sintering device having a support 41 fixed in the longitudinal direction along an upper surface of the wind box 40.

The air blocking device includes an uneven wear ring bar 160 formed along the support 41, and a seal bar 150 in surface contact with the wear ring bar 160.

The wear ring bar 160 has a lower side surface fixed along the support 41 in a sealed state, and a rectangular protrusion 161 is elongated in the longitudinal direction at the center of the upper surface thereof to have three horizontal surfaces 162. have. In addition, a grease inflow passage 163 through which grease flows is formed in the horizontal surface 162 in the longitudinal direction.

The seal bar 150 is in surface contact with the three horizontal surfaces 162 of the wear ring bar 160, the protrusion 161 of the wear ring bar 160 is coupled sliding so as not to be in surface contact with the vertical surface of the protrusion 161. Coupling tool 151 is provided. In addition, a compression spring 90 is mounted on an upper surface of the seal bar 150. The seal bar 15 has a cutout 172 formed on a front surface thereof, and a hook 171 protruding from an upper front side of the cutout 172 is provided to be coupled to a lower portion of the bogie 20 with a bolt. The end is coupled to the seal bar fixing plate 170 and the hook 171 provided on the seal bar fixing plate.

Hereinafter, the operation according to the present invention will be described.

In the case of sintering with a top-down suction sintering device equipped with an uneven multiple air cut-off device according to the present case, when air is blown in by operating a blower provided in the wind box 40, the airtight state of the bogie and the wind box There is a slight inflow of air into the gap. At this time, most of the incoming air is blocked at the first contact surface 152 of the wear ring bar 150 and the sealing bar 160, that is, the first horizontal surface is in contact with each other, the trace amount of air passing through the wear ring bar protrusions (161) flows into the primary air pocket 155, which is a space portion formed between the side surface and the coupling port 151 side of the sealing bar, to maintain a state in which the flow rate is lowered and the inflow is blocked by the secondary contact surface 153. .

However, even when fine air is not blocked from entering the secondary contact surface 153, the flow rate of air decreases again in the secondary air pocket 156, and the inflow of air is completely prevented from the tertiary contact surface 154. It can be blocked.

Therefore, the method of blocking the inflow of air by providing a contact surface of the first stage as three steps, and by forming an air pocket between the steps to reduce the flow rate of the introduced air can easily block the inflow in the next step will be.

In this effect, the contact surface between the seal bar and the wear ring bar is formed in multiple stages to increase the sealing effect, thereby increasing the effective air volume passing through the raw material loading layer, increasing the sintering speed, improving productivity, and improving the inflow of grease into the wind box. It prevents the wear of the seal bar and the wear ring bar and reduces the grease consumption.

Claims (1)

A trolley 20 provided with a traveling wheel 21 for traveling on the traveling rail 22; A wind box 40 provided at a lower portion of the trolley 20 to suck air; In the top-down suction sintering device comprising a support 41 fixed in the longitudinal direction along the upper side of the wind box 40, A lower side is fixed along the support 41, and a protrusion 161 is elongated in the longitudinal direction at the center of the upper surface, and an uneven wear ring bar 160 having a long copper passage 163 toward the upper surface; The contact surface 152, 153, 154 which is in surface contact with the upper surface of the wear ring 160, is fixed to the lower surface of the trolley 20, the seal bar 150 is mounted on the outer upper portion of the compression spring 70 And uneven multiple air blocking device of the sintering machine characterized in that it comprises a).