JPH0594699U - Sealing device for sinter cooler - Google Patents

Abstract

(57) [Abstract] [Purpose] To provide a sealing means which prevents the leakage of the cooling gas of the sinter ore cooler and the mixing of the outside air, and which has excellent durability and sealing performance. [Structure] Between the cooler pan of the sinter cooler and the exhaust hood, a metal seal bar mounted on the exhaust hood side via a leaf spring is elastically slid with a seal bar receiving metal member provided on the cooler pan side. Contact and seal. Between the cooler pan and the blower duct, a metal seal bar attached to the blower duct side via a leaf spring is elastically slidably contacted with the lower surface of the cooler pan side plate or the root of the roller receiver to seal. [Effect] Since it has a metal seal structure, it has excellent durability and sealing performance. The effect of blocking the outside air is great, and the exhaust heat recovery efficiency is high. The quality of the sintered ore can be improved because the leakage of the cooling gas can be almost prevented. The structure is simple and the equipment cost is low.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a sealing device for preventing leakage of cooling gas and mixing of outside air in a sinter cooler, and a metal seal is provided between an exhaust hood and a cooler pan and between a blower duct and a cooler pan. It relates to a device that effectively seals by means.

[0002]

[Prior Art]

 As shown in the outline of the sinter ore cooler in FIG. 7, the blower duct 3 runs below the cooler pan 1 that runs on the pan feed roller 2 and the exhaust hood 4 above the cooler pan 1. Omitted), the sinter 5 supplied on the cooler pan 1 is cooled by the cooling gas sent from the air duct 3 while the cooler pan travels by the rotation of the pan feed roller 2, and the end of the cooler pan is cooled. It is configured to be discharged in the department. On the other hand, the cooling gas is introduced into the exhaust heat recovery equipment 7 through the exhaust hood 4 and is circulated and used as the cooling gas through the circulation fan 8.

In the sinter ore cooling facility having such a configuration, the sinter ore surface layer portion on the cooler pan 1 is usually in a negative pressure state, and the outside air is sucked from the exhaust hood 4. .. In this negative pressure state, when the outside air is sucked from between the cooler pan 1 and the exhaust hood 4, the heat of the red-hot sinter is taken away and the high-temperature gas is cooled. This causes a decrease in collection efficiency. On the other hand, the gas obtained by cooling the sinter is cooled and circulated through the exhaust heat recovery equipment 7 as described above, and again cools the sinter 5 at the upper side from the blower duct 3, but from this blower duct, the bottom of the cooler pan is cooled. When the cooling gas flows in, the sintered ore 5 becomes a resistance to ventilation and leaks from between the blower duct 3 and the cooler pan 1. When this state occurs, the cooling efficiency of the sintered ore deteriorates, the quality of the sintered ore deteriorates, and the product conveyor ore conveyor belt conveyor burns out. Moreover, the surrounding environment is polluted by the dust contained in the cooling gas.

For this reason, conventionally, a sinter ore cooler is provided with a seal device for preventing outside air from sucking and leaking air. FIG. 8 exemplifies a general sealing means. Sealing members 9 and 10 made of an elastic material such as rubber are provided between the cooler pan 1 and the exhaust hood 4 and between the cooler pan 1 and the air duct 3. The sealing material 9 on the upper side of the cooler pan is attached to the side surface of the exhaust hood 4 with a cotter or bolts, and the sealing material 10 on the lower side of the cooler pan is attached to the air duct 3 with a cotter or bolts. This is a method of sealing using the pressing force due to the elasticity of the sealing material. There is also a structure in which an elastic sealing material such as rubber is used and a sealing material having a U-shaped cross section is fixed to the cooler pan side for sealing (see Japanese Utility Model Laid-Open No. 62-101853).

Further, Japanese Utility Model Laid-Open No. 62-101854 proposes a sinter cooling device in which a water box is provided at a portion to be sealed. This sealing method is a structure in which the seal plate attached to the cooler pan side is immersed in water filled in the water box to seal it with water.

[0006]

[Problems to be solved by the device]

 However, in the method of sealing by pressing the sealing material made of elastic material such as fixed rubber against the moving cooler pan, even the sealing material with heat resistance is deteriorated because the sealing part is under high temperature and high heat. However, since the life of the sealant is extremely short and the sealing material must be replaced frequently, the work must be stopped with the cooling machine being operated, which inevitably reduces the operating rate. As a countermeasure against this, a method of using a highly durable material for the sealing material can be considered, but an elastic material that has elasticity to obtain a predetermined sealing performance and is also tough in terms of material is extremely special, and In the case of such a special material, it is difficult to put into practical use because the material cost and the manufacturing cost are high.

Further, in the case of the water-sealing method, since the portion to be sealed is under high temperature and high heat as described above, evaporation of water is unavoidable, which requires constant water supply and protects the cooler. Therefore, it is necessary to deal with the generated steam, resulting in high equipment costs and running costs. Furthermore, this water sealing method is not preferable because dust and the like in the circulating gas enter the water box and the volume and solidification inside the water box lowers the sealing ability, which necessitates frequent cleaning of the water box.

The present invention solves the above-mentioned problems in the related art, has a simple structure and can obtain an excellent sealing effect, can stably maintain the sealing performance for a long period of time, and further, the equipment cost is low and the metal seal is inexpensive. It is intended to provide a device.

[0009]

[Means for Solving the Problems]

 This invention uses a metal sealing material instead of the conventional elastic material or water sealing method, and its gist is the sinter cooler, where the exhaust hood is placed between the cooler pan and the exhaust hood. A structure in which a leaf spring hung on the side surface and a metal seal bar which is attached to the lower end of the leaf spring and which is provided so as to be slidably contacted with the upper surface of the cooler pan side plate so as to be slidably contacted with the metal seal bar are not provided. The space between the air duct and the air duct is sealed by a leaf spring protruding from the upper opening of the air duct and a metal seal bar arranged so that the leaf spring exerts upward pressure and makes a sliding contact with the lower surface of the cooler pan side plate. In addition, the space between the cooler pan and the air duct is replaced by the above structure, and a leaf spring protruding from the upper opening of the air duct and a cooler attached to the tip of the leaf spring are used. A sealing device sinter cooler, characterized in that no structure to seal with a metal seal bar sliding contact with the receiving hardware which arranged on the base portion of the receiving rollers projecting from the pan.

[0010]

[Action]

 Between the cooler pan and the exhaust hood, a metal seal bar, which is constantly pressed downward by the pressing force of a leaf spring hung on the side of the exhaust hood, is slidably attached to the top surface of the bracket placed on the upper side of the cooler pan side plate. Since they are in contact with each other, the seal bar does not always make sliding contact with the upper surface of the receiving object as the cooler pan moves, and a gap is not generated, and the seal bar is elastically supported by the leaf springs so that the cooler pan runs. It can follow a lot of up and down movements, and the sealing performance does not deteriorate. Moreover, even when the cooler pan is meandering, by setting the width of the receiving object that is in sliding contact with the seal bar to an appropriate width, it is possible to prevent the seal bar from coming off the slide surface.

Between the cooler pan and the air duct, the metal seal bar attached to the upper end of the leaf spring is slidable on the lower surface of the cooler pan side plate by the pressing force of the leaf spring protruding from the upper opening of the air duct. Since they are pressed against each other, the metal seal bar and the cooler pan side plate do not always slide and make a gap as the cooler pan moves, and since this seal bar is also elastically supported by the leaf springs, the cooler It can follow some vertical movements while the pan is running, and the sealing performance does not deteriorate. Moreover, even if the cooler pan is temporarily lowered due to some abnormality, the damage of the sealing device and the cooler pan can be minimized by the action of the leaf springs, and the cooler pan can be removed. When the normal state is restored, the seal bar returns to a predetermined state by the force of the leaf spring, and the sealing ability is restored.

Further, a seal bar attached to the tip of a leaf spring protruding from the upper opening of the blower duct is slidably contacted with a receiving member arranged on a root of a roller receiver protruding from the cooler pan to blow the cooler pan and the blower. Even in the method of sealing between ducts, the action of the leaf springs can follow some vertical movement of the cooler pan while it is running, and the sealing performance does not deteriorate. However, damage to the sealing device and cooler pan can be minimized, and when the cooler pan is restored to its original normal state, the force of the leaf spring returns the seal bar to the prescribed state, Seal ability is restored.

[0013]

【Example】

 1 to 5 show an embodiment corresponding to claim 1 of the present invention. FIG. 1 is a vertical sectional view showing an example of the entire structure of a sealing device for a smelting ore cooling machine, and FIG. Fig. 3 is an enlarged vertical sectional view showing the seal portion between the cooler pan and the exhaust hood of Fig. 3, and Fig. 3 is an enlarged vertical sectional view showing the seal portion between the cooler pan and the air duct of the sealing device. The other embodiment of this invention is shown, 11 and 15 are seal bar supports, 12 and 16 are leaf springs, 12-1 are laminated leaf springs, 13 and 17 are seal bars, and 14 is a seal bar bracket. , 16-1 are coil springs.

That is, the seal portion between the cooler pan 1 and the exhaust hood 4 is provided with a plate panel 12 and a plate panel 12 hung on a seal bar support 11 which is attached to the outer side surface of the exhaust hood 4 in a longitudinal direction by an appropriate means. The seal bar 13 is attached to the lower end of the spring, and the seal bar bracket 14 is provided horizontally on the side plate 1-1 of the cooler pan 1. The seal bar 13 is constantly sealed by the repulsive force of the plate spring 12. The structure is such that the upper surface of the bar receiving member 14 is slidably contacted and sealed. Therefore, the seal bar 13 that seals between the cooler pan 1 and the exhaust hood 4 is fixed with respect to the movement of the cooler pan, and the contact surface with the seal bar receiving member 14 is appropriately repulsed by the leaf spring 12. Make sliding contact.

The seal portion between the cooler pan 1 and the blower duct 3 is a leaf spring 16 attached to a seal bar support 15 fixed to the upper opening of the blower duct 3 by an appropriate means in the longitudinal direction, and the tip of the leaf spring. And a seal bar 17 which is horizontally attached to the section, and the seal bar 17 is always slidably pressed against the lower surface of the side plate 1-1 of the cooler pan 1 by the repulsive force of the leaf spring 16 for sealing. Is becoming Therefore, the seal bar 17 that seals between the cooler pan 1 and the blower duct 3 is also fixed with respect to the movement of the cooler pan, and elastically slides by the repulsive force of the leaf spring 16.

The vertical movement range of the seal bar in the above-mentioned sealing device is not particularly limited, but generally 20 to 30 mm is suitable from the movement of the cooler pan in actual operation. Further, the sliding surface of the seal bar receiving member 14 in sliding contact with the seal bar 13 for sealing between the cooler pan 1 and the exhaust hood 4 and the sliding surface of the seal bar 17 in sliding contact with the side plate 1-1 of the cooler pan 1 are cooled. Considering the amount of meandering of the cooler pan caused by machine distortion, etc., generally, if the width of the cooler pan is about 100 mm, the seal bar 13 has a side plate of the cooler pan 1 rather than the seal bar bracket 14. The 1-1 does not separate from the seal bar 17.

In the above-mentioned sealing device, between the cooler pan 1 and the exhaust hood 4, the metal seal bar 13 elastically supported on the side surface of the exhaust hood 4 via the leaf spring 12 is cooled by the pressing force of the leaf spring 12. Even if the space in the surface layer of the sintered ore 5 becomes a negative pressure, it is sealed between the cooler pan 1 and the exhaust hood 4 because it seals by sliding against the seal bar receiving member 14 protruding from the upper part of the pan side plate. The outside air is not sucked in more.

Further, between the cooler pan 1 and the blower duct 3, a metal seal bar 17 mounted on the blower duct 3 side via a leaf spring 16 is provided on the lower surface of the side plate 1-1 of the cooler pan 1. Since it is slidably contacted and sealed by the repulsive force of 16, the cooling gas for the sintered ore flowing from the blower duct 3 does not leak from between the cooler pan 1 and the blower duct 3.

Further, even if the cooler pan 1 moves up and down during traveling due to the distortion of the structure of the cooler, the seal bar 13 between the cooler pan 1 and the exhaust hood 4 is acted by the leaf spring 12 to cause the cooler pan side plate to move. In the state of sliding contact with the seal bar receiving member 14 projecting on the upper part of the above, there is no gap following the vertical movement and the seal bar 17 between the cooler pan 1 and the blower duct 3 is attached to the blower duct 3 side. Due to the action of the leaf spring 16, the gap does not occur following the vertical movement of the cooler pan side plate 1-1 while slidingly contacting it. Therefore, even if the cooler pan moves up and down, the outside air is not sucked from between the exhaust hood 4 and the cooler pan 1 and the air is not leaked from between the cooler pan 1 and the blower duct 3.

Further, even if the cooler pan 1 meanders while the vehicle is running, the cooler pan 1 between the cooler pan 1 and the exhaust hood 4, and between the cooler pan 1 and the air duct 3 are considered in consideration of the meandering amount of the cooler pan 1. Since the sliding surface of the seal bar receiving member 14 on the side and the width of the seal bar 17 are set, the seal bar 13 between the cooler pan and the exhaust duct does not separate from the seal bar receiving member 14, and the cooler pad The lower surface of the side plate 1-1 does not separate from the seal bar 17.

Further, even if the cooler pan feed roller 2 is destroyed and the cooler pan 1 falls downward, the load is received by the repulsive force of the leaf spring 16 on the blower duct 3 side. The seal bar support and the air duct opening will not be damaged. After that, the repair of the cooler pan feed roller 2 is finished, the cooler pan 1 returns to a predetermined position, and at the same time, the repulsive force of the leaf spring 16 automatically returns the seal bar 17 to a predetermined state.

FIG. 4 shows an example in which the leaf spring 12-1 is used as the leaf spring that supports the seal bar 13 between the cooler pan 1 and the exhaust hood 4. In this case, the life of the leaf spring can be extended. There are advantages. Further, FIG. 5 also uses a coil spring 16 -1 in order to reduce the load on the leaf spring 16 that supports the seal bar 17 between the cooler pan 1 and the blower duct 3 and extend the life. A plurality of coil springs 16-1 are arranged at appropriate intervals in the longitudinal direction of the exhaust hood.

FIG. 6 shows an embodiment corresponding to claim 2 of the present invention. As a sealing means between the cooler pan 1 and the blower duct 3, a suitable means is provided in the upper opening of the blower duct 3 in the longitudinal direction. A leaf spring 16-1 attached to the seal bar support 15-1 protruding from the plate, a seal bar 17-1 with a slope horizontally attached to the end of the plate spring, and a seal bar 17-1 with a slope The seal bar receiving member 14-1 is arranged diagonally at the base of the feed roller receiver 1-2 that is horizontally projected on the side surface of the cooler pan 1, and the leaf spring 16- With the repulsive force of No. 1, the slope of the tip portion of the seal bar 17-1 is slidably pressed against the seal bar receiving metal piece 14-1 to seal. Therefore, the seal bar 17 for sealing between the cooler pan 1 and the blower duct 3 is fixed with respect to the movement of the cooler pan and elastically slidably contacted by the repulsive force of the leaf spring 21 as in the case of the above. In the case of such a seal structure as well, it is possible to sufficiently cope with vertical movement and meandering during traveling of the cooler pan, and abnormal lowering as in the above case.

Example 1 Table 1 compares the effect of applying the present invention shown in FIGS. 1 to 3 to an actual machine in comparison with a conventional rubber seal. The materials of the seal bar, the seal bar receiving member, and the leaf spring in this example were SS400, SS540, and SUP5, respectively. As is clear from the data in Table 1, the amount of cooling gas leakage and the amount of dust generated are greatly reduced compared to the conventional one, and the exhaust heat recovery efficiency is also improved, confirming the effectiveness of the sealing device of the present invention. It was

[0025]

[Table 1]

[0026]

[Effect of the device]

 The sealing device according to this invention has the following effects as described above. The structure is simple, and it is much more durable than the conventional rubber seal method or water seal method, and the maintenance cost is significantly lower. Since the leakage of the gas for cooling the sinter can be extremely reduced, the generation of dust is suppressed, which can contribute to the improvement of the surrounding environment. Since the effect of blocking the outside air is great, the heat recovery efficiency is improved and the power source of the circulation fan can be reduced. Due to the extremely small air leak of the sinter cooling gas, the sinter can be cooled well and the quality can be improved. The cost of the sealing device is low and it can be easily installed on the existing sinter cooler. Even if the sinter cooler ages, the sealing device can be installed without updating the cooler. Not only is it easy to maintain and maintain the sealing device, but it is also durable and does not require maintenance or maintenance for several years.

[Brief description of drawings]

FIG. 1 is a vertical cross-sectional view showing an example of the entire structure of a sealing device for a sinter cooler according to the present invention.

FIG. 2 is an enlarged vertical sectional view showing a seal portion between a cooler pan and an exhaust hood of the same sealing device.

FIG. 3 is an enlarged vertical sectional view showing a seal portion between a cooler pan and a blower duct of the same sealing device.

FIG. 4 is a vertical cross-sectional view showing an example in which a leaf spring between a cooler pan and an exhaust hood in the same sealing device is constituted by a laminated leaf spring.

FIG. 5 is a vertical cross-sectional view showing an example in which a leaf spring between a cooler pan and a blower duct in the above sealing device is used together with a coil spring.

FIG. 6 is a vertical cross-sectional view showing another example of the seal structure between the cooler pan and the air duct in the same sealing device.

FIG. 7 is a schematic view showing an example of the entire structure of a sinter ore cooler that is the subject of the present invention.

FIG. 8 is a schematic view showing an example of a conventional general rubber seal device.

[Explanation of symbols]

 1 Cooler pan 2 Pan feed roller 3 Blower duct 4 Exhaust hood 5 Sintered ore 11,15 Seal bar support 12,16 Leaf spring 13 17 Seal bar 14 Seal bar bracket

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Creator Koji Iijima 3 Hikari No.3, Hikaru, Kashima-machi, Kashima-gun, Ibaraki Prefecture Sumitomo Metal Industries, Ltd. Kashima Works

Claims (2)

[Scope of utility model registration request] 1. A sealing device for a sinter ore cooler in which a cooler pan is suspended and supported by a feed roller, a blower duct is provided below the cooler pan, and an exhaust hood is provided above the cooler pan. The space between the hoods is sealed by a leaf spring hung vertically on the side of the exhaust hood and a metal seal bar which is attached to the lower end of the leaf spring and which is provided on the upper surface of the cooler pan side plate so as to be in sliding contact with the upper surface of the receiving object. Between the cooler pan and the blower duct, there is a plate spring protruding from the upper opening of the blower duct, and a metal plate arranged so that pressing force is applied upward by the plate spring to make sliding contact with the lower surface of the cooler pan side plate. A sealing device for a sinter ore cooler characterized by having a structure for sealing with a seal bar. 2. Between the cooler pan and the blower duct, a leaf spring protruding from the upper opening of the blower duct, and a receiving member arranged on a roller receiving root portion attached to the tip of the leaf spring and protruding from the cooler pan. The sealing device for a sinter cooler according to claim 1, wherein the sealing device is configured to seal with a metal seal bar that is slidably contacted with.