Sintering machine trolley breast board outer sealing device and method based on flexible sealing cloth

Abstract

The invention relates to the technical field of sintering machines, and discloses a sintering machine trolley breast board outer sealing device and method based on flexible sealing cloth, the flexible sealing cloth is installed on the outer side of a trolley breast board, and the flexible sealing cloth achieves dynamic sealing through negative pressure adsorption; the closed-loop transmission mechanism comprises a rotating wheel set and a closed-loop thin steel wire rope arranged on the outer side face of the rotating wheel set in a sleeving mode. The flexible sealing cloth is fixedly connected with the closed-loop thin steel wire rope; the fixed supporting system is used for supporting the rotating wheel set and is fixed piles arranged along the two sides of the trolley, and the rotating wheel set is fixed to the pile tops of the fixed piles. Dynamic sealing is achieved through negative pressure of the sintering machine, the overall air leakage rate of the breast board and the sintering machine is greatly reduced, power consumption of a main exhaust fan is reduced, the energy utilization efficiency is effectively improved, and the production cost is reduced. The device is long in service life and high in stability due to the multi-layer composite structural design of the sealing cloth, the reasonable configuration of a closed-loop transmission mechanism and the scientific layout of a fixed supporting system.

Description

Technical Field

[0001] The invention belongs to the technical field of sintering machines, and in particular relates to a sintering machine trolley guardrail outer sealing device and method based on a flexible sealing cloth. Background Art

[0002] In the sintering production process of the metallurgical industry, the sintering machine is an extremely critical equipment. Its working principle is to create a negative pressure environment in the system through the main exhaust fan and other equipment, so that the air passes through the sintering material layer from a specific channel, and supplies sufficient oxygen for the sintering reaction, so as to ensure the smooth progress of the sintering process. However, the sintering machine has long been facing serious air leakage problems. Air leakage will not only cause a large amount of unnecessary energy loss and increase production costs, but also interfere with the normal contact between air and sintering materials during the sintering process, resulting in a decrease in sintering efficiency and affecting the quality of sintered ore. Therefore, reducing the air leakage rate of the sintering machine, especially the air leakage between the trolley guardrail and the body, has become an important issue that needs to be solved urgently to improve the efficiency of sintering production and achieve energy conservation and emission reduction goals.

[0003] Existing sealing solutions, such as the use of hard sealing baffle replacement or elastic reed sealing, have high single replacement costs, which has brought a heavy economic burden to the enterprise and greatly compressed the profit margin of the enterprise. These traditional sealing methods require long-term shutdown when implementing replacement or maintenance operations, which seriously affects the continuous production of the sintering machine, resulting in a significant reduction in production efficiency, and the enterprise cannot produce products normally during the shutdown period, causing huge economic losses. Existing sealing technologies generally have the problem of insufficient wear resistance, and the sealing effect deteriorates rapidly with the increase of service time. In a short period of time, the sealing parts will not be able to effectively block air leakage due to wear, and need to be replaced frequently, which not only increases the maintenance cost, but also increases the labor intensity of workers. Although some existing sealing technologies have certain high temperature resistance, they are less flexible. For example, the metal-ceramic composite baffle used, although it can withstand high temperatures, cannot adapt to the deformation of the trolley caused by various factors during operation. When the trolley is deformed and the gap changes, the sealing effect is greatly reduced or even fails. The hydraulic compression sealing structure used has a complex mechanical structure, a high failure rate, and requires frequent maintenance. Frequent failures not only affect the normal operation of the sintering machine, but also increase the repair cost and maintenance difficulty of the equipment.

[0004] In view of this, we propose a sintering machine trolley guardrail external sealing device and method based on flexible sealing cloth to solve the above technical problems. Summary of the invention

[0005] The present invention aims to solve the technical problems that the above-mentioned prior art adopts metal-ceramic composite guardrails or hydraulic compression sealing structures to prevent air leakage in sintering machines, but cannot adapt to gaps caused by deformation of the trolley, has a high mechanical failure rate and requires frequent maintenance.

[0006] To achieve the above object, the present invention provides the following technical solutions:

[0007] An external sealing device for the sintering machine trolley railing based on a flexible sealing cloth, comprising:

[0008] A flexible sealing cloth, which is installed on the outer side of the trolley railing. Utilizing the negative pressure system existing in the sintering machine and under the action of negative pressure, the flexible sealing cloth is naturally adsorbed towards the trolley railing and closely adheres to the surface of the trolley railing, enabling the flexible sealing cloth to achieve dynamic sealing through negative pressure adsorption;

[0009] A closed-loop drive mechanism, including a plurality of rotating wheel sets arranged at equal distances and a closed-loop thin steel wire rope sleeved on the outer side of the rotating wheel sets; the flexible sealing cloth is fixedly connected to the closed-loop thin steel wire rope;

[0010] A fixed support system for supporting the rotating wheel sets. The fixed support system is fixed piles arranged along both sides of the trolley, and the rotating wheel sets are fixed on the tops of the fixed piles.

[0011] Preferably, the flexible sealing cloth is a high-temperature resistant Teflon coated fabric with a multi-layer composite structure. The high-temperature resistant Teflon coated fabric includes a high-temperature resistant fiber layer, an anti-wear coating, and a reflective marking layer arranged in sequence from the inside to the outside;

[0012] The thickness of the high-temperature resistant Teflon coated fabric is 0.5 - 1.2 mm, and the tensile strength ≥ 50 MPa.

[0013] Preferably, the rotating wheel set includes a support rod fixed on the top of the fixed pile and a rotating guide wheel rotatably sleeved on the outer side of the support rod through a graphite self-lubricating bearing. The closed-loop thin steel wire rope is sleeved on the outer side of the rotating guide wheel.

[0014] Preferably, the closed-loop thin steel wire rope is made of 316L stainless steel wire and is coated with a polytetrafluoroethylene sheath.

[0015] Preferably, the pre-tightening force of the closed-loop thin steel wire rope is adjusted by a tensioner, and the pre-tightening force is controlled within 200 - 300 N. The diameter of the closed-loop thin steel wire rope is 2 - 3 mm, and the breaking tensile force ≥ 1.5 kN.

[0016] Preferably, the fixed piles are arranged at intervals of 1.5 - 2 m along both sides of the trolley.

[0017] Preferably, the steel wire rope and the sealing cloth are fixed by high-temperature sewing or metal clips.

[0018] Preferably, the material of the fixed pile is Q235B.

[0019] An external sealing method for the sintering machine trolley railing based on a flexible sealing cloth, comprising the following steps:

[0020] S1. Operate during the normal production of the sintering machine. Weld fixed piles made of Q235B along both sides of the trolley at intervals of 1.5 - 2 m. Use a laser rangefinder to calibrate the flatness of the installation plane of the rotating wheel set to ensure that its tolerance is within the range of ±1 mm / m. Fix the rotating wheel set to the top of the pile with bolts. At the same time, fix the closed-loop thin steel wire rope and the flexible sealing cloth by means of high-temperature stitching or metal clips to form an integral sealed component structure.

[0021] S2. Rely on the negative pressure system of the sintering machine itself to make the flexible sealing cloth naturally adsorb and fit on the trolley railing under the action of negative pressure. During the operation of the trolley, the rotating wheel set guides the movement of the steel wire rope, and then drives the synchronous movement of the flexible sealing cloth. At the same time, under the continuous adsorption of negative pressure, the flexible sealing cloth always keeps in close contact with the railing. Even if the trolley has a certain deformation or the gap changes slightly during the movement, the flexible sealing cloth can make timely adjustments to maintain the dynamic sealing state.

[0022] Compared with the prior art, the technical effects and advantages of the present invention are:

[0023] 1. For the external sealing device and method of the trolley railing of the sintering machine based on the flexible sealing cloth, when the sintering machine is in normal production, the main exhaust fan operates to create a negative pressure environment inside. This device installs the flexible sealing cloth outside the trolley railing. Utilizing this negative pressure, the sealing cloth is naturally adsorbed towards the railing and fits tightly. Since the trolley is in a dynamic state during operation, the gap between the railing and the body will change due to factors such as movement and deformation. However, under the continuous action of negative pressure, the sealing cloth can timely adjust the fitting state and always maintain good contact with the railing to achieve dynamic sealing. The rotating wheel set in the closed-loop transmission mechanism guides the movement of the closed-loop thin steel wire rope, and the steel wire rope is fixed to the flexible sealing cloth, thereby driving the sealing cloth to move synchronously with the trolley. The rotating guide wheel rotates through a graphite self-lubricating bearing, reducing the friction and wear during the movement process and ensuring the smoothness and stability of the transmission.

[0024] 2. Utilize the negative pressure of the sintering machine itself to achieve sealing, which can effectively fill the gap between the trolley railing and the body, significantly reduce the proportion of air leakage rate of the railing, and further reduce the overall air leakage rate of the sintering machine. This helps to improve the energy utilization efficiency of the sintering machine, reduce the power consumption of the main exhaust fan, and save a large amount of energy costs for the enterprise.

[0025] 3. Under continuous negative pressure adsorption, the sealing cloth can adapt to the gap changes caused by the movement and deformation of the trolley, achieving dynamic sealing, ensuring the stability and continuity of the sealing effect during the entire operation of the trolley, and improving the stability of sintering production and product quality. The flexible sealing cloth adopts a multi-layer composite structure. The high-temperature resistant fiber layer ensures its normal operation in a high-temperature environment, and the anti-wear coating reduces wear, extending the service life of the sealing cloth to 14 months, which is 3 times longer than that of traditional metal baffles. At the same time, the sealing cloth is inexpensive, reducing the procurement cost of the enterprise.

[0026] 4. Operations such as fixed pile welding can be carried out during the normal production of the sintering machine, reducing the downtime, minimizing the impact on production, and improving production efficiency. In the closed-loop drive mechanism, the graphite self-lubricating bearing reduces the wear of the rotating wheel set. The steel wire rope made of 316L stainless steel wire and wrapped with a polytetrafluoroethylene sheath is corrosion-resistant and wear-resistant. The reasonable control of the pre-tightening force of the steel wire rope ensures the stable operation of the drive mechanism, reducing the maintenance cost and mechanical failure rate.

[0027] 5. The reflective identification layer of the flexible sealing cloth facilitates the staff to quickly identify its position and status during operation and maintenance, improving work efficiency. In addition, the enterprise logo can be printed on the surface of the sealing cloth, and the logo is shown in the embodiment. Description of the Drawings

[0028] Figure 1 is a schematic structural diagram of the present invention;

[0029] Figure 2 is a state diagram of the present invention used in cooperation with the trolley baffle;

[0030] Figure 3 is a schematic structural diagram of the rotating wheel set of the present invention.

[0031] In the figure: 1. Flexible sealing cloth; 2. Trolley baffle; 3. Rotating wheel set; 31. Support rod; 32. Rotating guide wheel; 4. Closed-loop thin steel wire rope; 5. Fixed pile. Detailed Embodiment

[0032] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0033] The following will be further described in detail in conjunction with Figures 1 to 3 to further illustrate the present application.

[0034] An outer sealing device for a sintering machine trolley railing based on a flexible sealing cloth according to an embodiment of the present application includes a flexible sealing cloth 1, a closed-loop drive mechanism, and a fixed support system;

[0035] The flexible sealing cloth 1 is installed on the outer side of the trolley railing 2. Utilizing the negative pressure system existing in the sintering machine itself, under the action of negative pressure, the flexible sealing cloth 1 is naturally adsorbed towards the trolley railing 2 and closely adheres to the surface of the trolley railing 2, enabling the flexible sealing cloth 1 to achieve dynamic sealing through negative pressure adsorption;

[0036] The flexible sealing cloth 1 is a high-temperature resistant Teflon coated fabric with a multi-layer composite structure. The high-temperature resistant Teflon coated fabric includes a high-temperature resistant fiber layer, an anti-wear coating, and a reflective marking layer arranged in sequence from the inside to the outside;

[0037] The thickness of the high-temperature resistant Teflon coated fabric is 0.5 - 1.2 mm, and the tensile strength ≥ 50 MPa.

[0038] Utilizing the negative pressure system of the sintering machine itself to make the sealing cloth naturally adsorb and adhere to the railing can fill the gap between the railing and the main body, greatly reducing the air leakage situation. The proportion of air leakage from the railing can be reduced, thereby reducing the air leakage rate of the sintering machine and effectively improving the energy utilization efficiency of the sintering machine. During the operation of the trolley, even if the trolley is deformed or the gap changes slightly, the sealing cloth can timely adjust the fitting state under the continuous action of negative pressure to achieve dynamic sealing, ensuring the stability and continuity of the sealing effect.

[0039] The high-temperature resistant fiber layer ensures that the sealing cloth can work normally in the high-temperature environment of the sintering machine and will not be damaged due to high temperature, extending the service life of the sealing cloth. The anti-wear coating enhances the wear resistance of the sealing cloth, reducing the damage caused by friction during long-term use and further improving the durability of the sealing cloth. The reflective marking layer facilitates the staff to quickly identify the position and state of the sealing cloth during operation and maintenance, improving work efficiency.

[0040] The thickness of 0.5 - 1.2 mm can not only ensure that the sealing cloth has a certain flexibility to better fit the railing but also has sufficient strength to withstand the negative pressure and external forces during the movement of the trolley. The tensile strength ≥ 50 MPa ensures that the sealing cloth is not easily broken during use and can stably play a sealing role.

[0041] The closed-loop drive mechanism includes a plurality of rotating wheel sets 3 arranged at equal distances and a closed-loop thin steel wire rope 4 sleeved on the outer side of the rotating wheel sets 3;

[0042] The rotating wheel set 3 includes a support rod 31 fixed on the top of the fixed pile 5 and a rotating guide wheel 32 rotatably sleeved on the outer side of the support rod 31 through a graphite self-lubricating bearing. The closed-loop thin steel wire rope 4 is sleeved on the outer side of the rotating guide wheel 32.

[0043] The closed-loop thin steel wire rope 4 is made of 316L stainless steel wire and is wrapped with a polytetrafluoroethylene sheath. The pre-tightening force of the closed-loop thin steel wire rope 4 is adjusted by a tensioner, and the pre-tightening force is controlled at 200 - 300 N. The diameter of the closed-loop thin steel wire rope 4 is 2 - 3 mm, and the breaking tensile force is ≥ 1.5 kN.

[0044] The steel wire rope and the sealing cloth are fixed by high-temperature stitching or metal clips.

[0045] The rotating wheel set 3 guides the movement of the closed-loop thin steel wire rope 4, and then drives the flexible sealing cloth 1 to move synchronously with the trolley. This structure enables the sealing cloth to always maintain a stable relative position with the trolley railing 2, avoiding sealing failure caused by the asynchronous movement of the sealing cloth and the trolley.

[0046] The rotating guide wheel 32 rotates through a graphite self-lubricating bearing, reducing the friction and wear during the rotation process, extending the service life of the rotating wheel set 3, and also reducing the maintenance cost.

[0047] The steel wire rope made of 316L stainless steel wire and wrapped with a polytetrafluoroethylene sheath. 316L stainless steel has good corrosion resistance and can resist the corrosive substances in the environment around the sintering machine, extending the service life of the steel wire rope. The outer polytetrafluoroethylene sheath further reduces the friction between the steel wire rope and the rotating guide wheel 32, making the transmission smoother, and also improving the wear resistance of the steel wire rope.

[0048] Controlling the pre-tightening force of the closed-loop thin steel wire rope 4 at 200 - 300 N can ensure that the steel wire rope will neither be slack during operation, resulting in the abnormal movement of the sealing cloth, nor be overly tightened, increasing the mechanical load and wear, ensuring the stable operation of the entire closed-loop transmission mechanism.

[0049] The high-temperature stitching or metal clip fixing method can ensure a firm connection between the steel wire rope and the sealing cloth, preventing loosening or separation during the movement of the trolley, ensuring that the sealing cloth can move synchronously with the steel wire rope, and achieving a good sealing effect.

[0050] The fixed support system is used to support the rotating wheel set 3. The fixed support system is fixed piles 5 arranged at intervals of 1.5 - 2 m along both sides of the trolley. The rotating wheel set 3 is fixed on the top of the fixed piles 5. The material of the fixed piles 5 is Q235B.

[0051] Fixed piles 5 are arranged on both sides of the trolley at an interval of 1.5 - 2 m. This spacing design can provide uniform and stable support for the rotating wheel set 3, ensuring the installation and operation stability of the closed-loop transmission mechanism and the sealing cloth on the entire trolley, and avoiding seal failure or component damage caused by uneven support. The fixed pile 5 made of Q235B is a commonly used carbon structural steel, which has good strength and toughness, can withstand the weight of components such as the rotating wheel set 3 and wire ropes and the external forces during operation, and at the same time its cost is relatively low, making it suitable for large-scale application in the outer sealing device of the sintering machine trolley panel 2.

[0052] An outer sealing method for the sintering machine trolley panel based on a flexible sealing cloth includes the following steps:

[0053] S1. During the normal production of the sintering machine, operate to weld the fixed piles 5 made of Q235B along both sides of the trolley at an interval of 1.5 - 2 m. Use a laser rangefinder to calibrate the installation flatness of the rotating wheel set 3 to ensure that its tolerance is within the range of ±1 mm / m; fix the rotating wheel set 3 to the pile top with bolts; at the same time, fix the closed-loop thin wire rope 4 and the flexible sealing cloth 1 by means of high-temperature stitching or metal clips to form an integral sealing component structure;

[0054] S2. With the help of the negative pressure system of the sintering machine itself, the flexible sealing cloth 1 is naturally adsorbed and attached to the trolley panel 2 under the action of negative pressure. During the operation of the trolley, the rotating wheel set 3 guides the movement of the wire rope, and then drives the flexible sealing cloth 1 to move synchronously. At the same time, under the continuous adsorption of negative pressure, the flexible sealing cloth 1 always keeps close contact with the panel. Even if the trolley has a certain deformation or the gap changes slightly during the movement process, the flexible sealing cloth 1 can make timely adjustments to maintain the dynamic sealing state.

[0055] During the normal production of the sintering machine, operations such as welding the fixed piles 5 are carried out, which reduces the downtime, reduces the impact on production, and improves the production efficiency. Using a laser rangefinder to calibrate the installation flatness of the rotating wheel set 3 to ensure that the tolerance is within the range of ±1 mm / m guarantees the installation accuracy of the rotating wheel set 3 and provides a basis for the stable operation of the subsequent closed-loop transmission mechanism and the normal operation of the sealing cloth.

[0056] Fixing the closed-loop thin wire rope 4 and the flexible sealing cloth 1 into an integral structure by means of high-temperature stitching or metal clips enhances the integrity and stability of the sealing component, and improves the sealing effect. Realizing the adsorption and attachment of the sealing cloth with the help of the negative pressure system of the sintering machine itself without additional power equipment reduces the energy consumption and equipment cost. During the operation of the trolley, the sealing cloth can move synchronously with the trolley and adjust the attachment state in a timely manner according to the change of the gap, realizing dynamic sealing, effectively coping with problems such as trolley deformation, and ensuring the reliability of the sealing effect.

[0057] The external sealing device and method for the sintering machine trolley railing based on the flexible sealing cloth 1. During the normal production process of the sintering machine, a negative pressure environment needs to be formed in the system through equipment such as the main exhaust fan. When the main exhaust fan operates, it will extract the air inside the sintering machine, making the air pressure inside the sintering machine lower than the external air pressure, thus forming a negative pressure. This negative pressure is part of the normal production process of the sintering machine. The purpose is to enable air to pass through the sintering material layer from specific channels, provide sufficient oxygen for the sintering process, and ensure the smooth progress of the sintering reaction.

[0058] This device first proposed the principle of "dynamic flexible adsorption sealing", which utilizes the negative pressure system existing in the sintering machine itself. The flexible sealing cloth 1 is installed on the outer side of the trolley railing 2. Under the action of negative pressure, the sealing cloth will be naturally adsorbed towards the railing and closely fit on the surface of the railing. In this way, the gaps originally existing between the trolley railing 2 and the body are filled by the sealing cloth, effectively preventing air from leaking out through these gaps, thus achieving the sealing effect.

[0059] Since the trolley is dynamic during operation, the size and shape of the gaps between the railing and the body may change due to factors such as the movement and deformation of the trolley. However, under the continuous adsorption of negative pressure, the flexible sealing cloth 1 can always maintain the fitting state with the railing, make corresponding adjustments with the movement of the trolley and the slight changes of the gaps, achieve dynamic sealing, and ensure good sealing performance throughout the operation process of the trolley.

[0060] In summary, the working negative pressure environment of the sintering machine itself is the source of negative pressure adsorption, and through reasonable design, the device enables the flexible sealing cloth 1 to effectively seal the gaps of the trolley railing 2 under this negative pressure.

[0061] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. An external sealing device for the trolley railing of a sintering machine based on a flexible sealing cloth, characterized in that, Comprising: A flexible sealing cloth (1), which is installed on the outer side of the trolley railing (2). Utilizing the negative pressure system existing in the sintering machine, under the action of negative pressure, the flexible sealing cloth (1) is naturally adsorbed towards the trolley railing (2) and closely adheres to the surface of the trolley railing (2), enabling the flexible sealing cloth (1) to achieve dynamic sealing through negative pressure adsorption; A closed-loop transmission mechanism, including a plurality of rotating wheel sets (3) arranged at equal distances and a closed-loop thin steel wire rope (4) sleeved on the outer side of the rotating wheel sets (3); the flexible sealing cloth (1) is fixedly connected to the closed-loop thin steel wire rope (4); A fixed support system for supporting the rotating wheel sets (3), the fixed support system being fixed piles (5) arranged along both sides of the trolley, and the rotating wheel sets (3) are fixed to the top of the fixed piles (5).

2. The outer sealing device for the sintering machine trolley railing based on the flexible sealing cloth according to claim 1, characterized in that: The flexible sealing cloth (1) is a high-temperature resistant Teflon coated cloth with a multi-layer composite structure. The high-temperature resistant Teflon coated cloth includes a high-temperature resistant fiber layer, an anti-wear coating, and a reflective marking layer arranged in sequence from the inside to the outside; The thickness of the high-temperature resistant Teflon coated cloth is 0.5 - 1.2 mm, and the tensile strength ≥ 50 MPa.

3. The outer sealing device for the sintering machine trolley railing based on the flexible sealing cloth according to claim 1, wherein: The rotating wheel sets (3) include support rods (31) fixed to the top of the fixed piles (5) and rotating guide wheels (32) rotatably sleeved on the outer side of the support rods (31) through graphite self-lubricating bearings. The closed-loop thin steel wire rope (4) is sleeved on the outer side of the rotating guide wheels (32).

4. The outer sealing device for the trolley side plate of a sintering machine based on a flexible sealing cloth according to claim 1, characterized in that: The closed-loop thin steel wire rope (4) is made of 316L stainless steel wire twisted and coated with a polytetrafluoroethylene sheath.

5. The outer sealing device for the sintering machine trolley railing based on the flexible sealing cloth according to claim 1, characterized in that: The pre-tightening force of the closed-loop thin steel wire rope (4) is adjusted by a tensioner, and the pre-tightening force is controlled within 200 - 300 N. The diameter of the closed-loop thin steel wire rope (4) is 2 - 3 mm, and the breaking tensile force ≥ 1.5 kN.

6. The outer sealing device for the sintering machine trolley railing based on the flexible sealing cloth according to claim 1, characterized in that: The fixed piles (5) are arranged at intervals of 1.5 - 2 m along both sides of the trolley.

7. The external sealing device for the sintering machine trolley railing based on the flexible sealing cloth according to claim 1, characterized in that: The steel wire rope and the sealing cloth are fixed by high-temperature stitching or metal clips.

8. The outer sealing device for the sintering machine trolley railing based on the flexible sealing cloth according to claim 1, characterized in that: The material of the fixed piles (5) is Q235B.

9. A method for externally sealing the side plates of a sintering machine trolley based on a flexible sealing cloth, characterized in that, Using the sintering machine trolley railing outer sealing device based on a flexible sealing cloth according to any one of claims 1 - 8, the sintering machine trolley railing outer sealing method based on a flexible sealing cloth includes the following steps: S1. During the normal production of the sintering machine, operate to weld the fixed piles (5) made of Q235B at intervals of 1.5 - 2 m along both sides of the trolley, and use a laser rangefinder to calibrate the installation flatness of the rotating wheel sets (3) to ensure that its tolerance is within the range of ±1 mm / m; fix the rotating wheel sets (3) to the top of the piles by bolts; at the same time, fix the closed-loop thin steel wire rope (4) and the flexible sealing cloth (1) by high-temperature stitching or metal clips to form an integral sealed component structure; S2. Relying on the negative pressure system of the sintering machine itself, make the flexible sealing cloth (1) naturally adsorb and adhere to the trolley railing (2) under the action of negative pressure. During the operation of the trolley, the rotating wheel sets (3) guide the movement of the steel wire rope, thereby driving the synchronous movement of the flexible sealing cloth (1). At the same time, under the continuous adsorption of negative pressure, the flexible sealing cloth (1) always keeps closely adhering to the railing. Even if the trolley undergoes a certain deformation or the gap changes slightly during the movement process, the flexible sealing cloth (1) can make timely adjustments to maintain the dynamic sealing state.

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