Self-lubricating elastic compensation sealing device for side slide way of sintering machine

Abstract

The utility model relates to the technical field of industrial sealing, in particular to a self-lubricating elastic compensation sealing device for a side slide way of a sintering machine, which is arranged between a sintering trolley and an air bellow side beam and comprises a supporting seat fixed on the top surface of the air bellow side beam, a fixing plate is transversely and fixedly connected onto the supporting seat, and a sliding plate is arranged above the fixing plate. A cover plate is fixed below the sliding plate, an elastic assembly used for elastically driving the sliding plate to move upwards is arranged between the cover plate and the fixing plate, a limiting assembly used for limiting transverse movement of the cover plate is arranged between the cover plate and the fixing plate, and a lubricating assembly used for forming an oil film is installed on the sliding plate. The sealing device adopts a unique lower elastic sealing structure form, so that the sealing performance of the sealing device is not influenced by the working condition of the trolley, the overall sealing performance is remarkably improved, the service life of the sealing device is longer, maintenance and replacement are more convenient, the stability and production efficiency of sintering operation are improved, resource consumption is reduced, and the production cost is saved.

Description

Technical Field

[0001] This utility model relates to the field of industrial sealing technology, and in particular to a self-lubricating elastic compensation sealing device for the side slide of a sintering machine. Background Technology

[0002] Sintering machines are suitable for sintering operations in large-scale ferrous metallurgical sintering plants, primarily for the sintering of iron ore powder in large and medium-sized plants. It is the main equipment in the ducted sintering process, capable of sintering concentrates and rich ore powders of different compositions and particle sizes into blocks, and partially eliminating harmful impurities such as sulfur and phosphorus contained in the ore. Sintering machines are classified into several specifications based on sintering area, varying in length and width. Currently, belt-type ducted sintering technology dominates the field of sintering technology.

[0003] The sintering machine consists of a slide, which contacts the material-loaded trolley above and has a suction device below. The slide is mounted on the crossbeam of the bellows. The sintering machine is sealed at the head, tail, and both sides of the slide, along with the trolley seal and suction device, forming a ventilation chamber. The fan draws air from the sintering machine through the suction device, causing the material to burn gradually downwards from the upper layer of the trolley, completing the roasting process of the sintered ore. Better sealing results in more complete combustion, better sintering, higher fan efficiency, and lower operating costs. However, air leakage in sintering equipment remains a significant technical challenge. Steel plants are committed to innovating and upgrading sealing systems to reduce operating costs, decrease pollutant emissions, and improve the working environment.

[0004] In China, the trolley sealing technology for sintering equipment typically employs an upper slide rail elastic seal with a lower fixed slide rail. The sealing device is mounted on the trolley and primarily relies on a combination of a screw and a spring. The upper micro-elastic adjustment structure ensures a tight fit with the fixed slide rail, and slight friction during movement achieves sealing. Lubricant is added to the friction contact surfaces to reduce wear caused by frictional resistance. However, if one or more seals are damaged, the overall seal between the trolley and the lower slide rail will fail. Replacing the spring requires removing the sliding plate, a cumbersome operation that necessitates stopping the machine and unloading the trolley, making the replacement time-consuming and labor-intensive.

[0005] Furthermore, the sintering equipment operates continuously for 24 hours in a harsh environment with high temperatures and abundant dust. In this environment, after the return trolley tilts, the sliding plates and their grooves face upwards, making it easy for fine particles to fall between them. This can cause the sliding plates to become stuck in the grooves. When the trolley tilts back to its working state, the sliding plates, under the action of springs, cannot move freely within the grooves, exacerbating wear and tear on the sliding plates and lower slide rails, or creating gaps. All of these factors prevent the sealing device from functioning properly, resulting in seal failure. Existing sealing devices lack real-time monitoring and cleaning methods, making it difficult for the upper seal to maintain a good sealing effect during long-term operation, severely impacting the stability and production efficiency of the sintering operation. Utility Model Content

[0006] In order to solve the problems existing in the prior art, the present invention provides a self-lubricating elastic compensation sealing device for the side slide of a sintering machine.

[0007] The self-lubricating elastic compensation sealing device for the side slide of a sintering machine provided by this utility model adopts the following technical solution:

[0008] A self-lubricating elastic compensation sealing device for a sintering machine side slide is provided between the sintering trolley and the side beam of the air box. It includes a support base fixed to the top surface of the side beam of the air box, a fixed plate horizontally fixed to the support base, a slide plate above the fixed plate, a cover plate fixed below the slide plate, an elastic component between the cover plate and the fixed plate for elastically driving the slide plate to move upward, a limiting component between the cover plate and the fixed plate for limiting the lateral movement of the cover plate, and a lubrication component for forming an oil film installed on the slide plate.

[0009] By adopting the above technical solution, during the operation of the sintering trolley, the slide plate is elastically supported by the elastic component and subjected to uniform force, so that it is always in close contact with the bottom of the sintering trolley. This ensures that the contact pressure between the sintering trolley's first sliding plate and the side slide is constant. The limiting component ensures the stability of the slide plate's up and down movement, and the lubrication component ensures that a lubricating oil film is formed on the top surface of the slide plate. The various structures cooperate with each other, giving the sealing device a significant sealing effect.

[0010] The sealing device adopts a unique lower elastic sealing structure, which makes the sealing performance unaffected by the trolley working conditions, significantly improving the overall sealing performance, extending the service life of the sealing device, and improving the stability and production efficiency of sintering operations.

[0011] Optionally, the elastic component includes a height-adjustable seat, with protrusions fixed to both the top surface of the height-adjustable seat and the bottom surface of the cover plate, and a compression spring sleeved between the upper and lower protrusions.

[0012] By adopting the above technical solution, the elastic component has stable structural performance, provides constant elastic force through compression spring, and is very convenient to install and disassemble, facilitating later maintenance.

[0013] Optionally, the height-adjustable seat includes a support plate for fixing the protruding post, with a screw rod vertically fixed to the bottom surface of the support plate. The screw rod passes through the fixed plate and is threaded with at least two nuts, one of which abuts against the top surface of the fixed plate and the other of which abuts against the bottom surface of the fixed plate.

[0014] By adopting the above technical solution, when the contact surface between the slide and the sintering trolley wears, the adjusting nut causes the height-adjustable seat and the compression spring to rise as a whole. Under the premise of ensuring that the spring force of the compression spring is constant, the slide can continue to be used, thereby effectively extending the service life of the slide.

[0015] Optionally, the limiting component includes a guide rod that passes vertically through the fixed plate, and a sleeve that is fixed to the bottom surface of the cover plate and slides onto the guide rod.

[0016] By adopting the above technical solution, the guide rod and sleeve cooperate to limit the cover plate in all horizontal directions while ensuring its vertical movement stability, preventing the slide plate from deviating, and effectively ensuring the stability and reliability of the sealing device.

[0017] Optionally, a limiting block is fixed to the side wall of the support base, and a limiting groove is opened on the side of the cover plate, into which the limiting block is inserted.

[0018] By adopting the above technical solution, the combination of the limiting block and the limiting groove limits the cover plate in three horizontal directions while improving its vertical movement stability, thereby enhancing the stability and reliability of the sealing device.

[0019] Optionally, the lubrication assembly includes an oil injection pipe extending from bottom to top through the slide plate, and an oil reservoir connected to the oil injection pipe is provided on the top surface of the slide plate.

[0020] By adopting the above technical solution, the grease enters the oil storage tank from bottom to top through the oil injection pipe, and is then coated on the top surface of the cover plate during the operation of the sintering trolley. The entire oil supply process does not affect the normal operation of the sintering trolley and does not require machine shutdown.

[0021] Optionally, the top surface of the skateboard is embedded with several graphite pillars.

[0022] By adopting the above technical solution, the graphite pillars embedded on the top surface of the slide plate and the grease output from the oil injection pipe form a mixed oil film, which not only reduces the amount of grease used, but also improves the self-lubricating effect.

[0023] Optionally, one end of the skateboard is provided with a snap-fit ​​block, and the other end of the skateboard is provided with a snap-fit ​​groove. Two adjacent skateboards are engaged by snap-fit ​​blocks and snap-fit ​​grooves.

[0024] By adopting the above technical solution, the snap-fit ​​block and the snap-fit ​​groove engage to form a labyrinth seal structure, thereby improving the overall sealing performance.

[0025] Optionally, a protective component may also be included, comprising a retractable connecting plate, one end of which is fixed to the side of the cover plate, and the other end of which is fixed to the side of the fixed plate.

[0026] By adopting the above technical solution, the retractable connecting plate in the protective component has a significant sealing effect on the elastic component, preventing external impurities from contacting the elastic component, thereby reducing its adverse effects and extending the service life of the elastic component.

[0027] Optionally, the protective assembly also includes baffle one and baffle two. Baffle one is vertically arranged on the side of the support base near the wheel of the sintering trolley, and the top of baffle one is fixed to the side of the slide plate. Baffle two is arranged on the side of the support base away from the wheel of the sintering trolley, and a buckle is fixed to the side of the slide plate. Baffle two is hooked and fixed to the buckle.

[0028] By adopting the above technical solution, baffle one and baffle two, together with the support base, provide all-round protection for various internal components, thereby significantly improving the overall service life of the sealing device.

[0029] In summary, this utility model has at least one of the following beneficial technical effects:

[0030] 1. The sealing device adopts a unique lower elastic sealing structure, which makes the sealing performance of the sealing device unaffected by the working conditions of the trolley, significantly improving the overall sealing performance, extending the service life of the sealing device, and making maintenance and replacement more convenient, thereby improving the stability and production efficiency of sintering operations.

[0031] 2. The design and commissioning of this sealing device has innovative significance for the field of sintering machine sealing and even the field of industrial sealing. It can be adapted and applied as a key sealing technology in similar working conditions to reduce resource consumption and save production costs. Attached Figure Description

[0032] Figure 1 This is a schematic diagram of the installation position of the sealing device according to an embodiment of the present invention.

[0033] Figure 2 This is a schematic diagram of the sealing device according to an embodiment of the present invention.

[0034] Figure 3 yes Figure 2 Sectional view along the AA direction.

[0035] Figure 4 This is a schematic diagram of the structure of the skateboard according to an embodiment of the present invention.

[0036] Figure 5 yes Figure 2 Sectional view along the BB direction.

[0037] Figure 6 This is a schematic diagram of the cover plate according to an embodiment of the present utility model.

[0038] Figure 7 yes Figure 2 A cross-sectional view along the CC direction.

[0039] Explanation of reference numerals in the attached drawings: 1. Sintering trolley; 2. Wind box side beam; 3. Support seat; 30. Fixing plate; 4. Slide plate; 40. Snap-fit ​​block; 41. Snap-fit ​​groove; 42. Oil storage tank; 5. Cover plate; 50. Limiting groove; 6. Elastic component; 60. Height-adjustable seat; 600. Support plate; 601. Screw; 602. Nut; 61. Protruding column; 62. Compression spring; 7. Limiting component; 70. Guide rod; 71. Sleeve; 72. Limiting block; 8. Lubrication component; 80. Oil injection pipe; 81. Graphite column; 9. Protective component; 90. Telescopic connecting plate; 91. Baffle one; 92. Baffle two; 93. Buckle. Detailed Implementation

[0040] The following is in conjunction with the appendix Figure 1 -Appendix Figure 7 The present invention will be described in further detail below.

[0041] This utility model discloses a self-lubricating elastic compensation sealing device for the side slide of a sintering machine. (Refer to...) Figure 1 and Figure 2 The self-lubricating elastic compensation sealing device of the sintering machine side slide is set between the sintering trolley 1 and the wind box side beam 2. The sealing device includes a support base 3, a sliding plate 4, a cover plate 5, an elastic component 6, a limiting component 7, a lubrication component 8, and a protective component 9.

[0042] Reference Figure 1 and Figure 2 The support base 3 has an L-shaped cross-section and is fixed to the top surface of the side beam 2 of the wind box. The inner corner of the support base 3 faces the wheel of the sintering trolley 1. (Refer to...) Figure 3 and Figure 4 A fixing plate 30 is horizontally fixed to the vertical plate of the support base 3. The fixing plate 30 is located directly above the horizontal plate of the support base 3. A sliding plate 4 is set directly above the fixing plate 30. A snap-fit ​​block 40 is set at one end of the sliding plate 4, and a snap-fit ​​groove 41 is set at the other end of the sliding plate 4. Two adjacent sliding plates 4 are fixed by spot welding after being inserted into the snap-fit ​​block 40 and the snap-fit ​​groove 41 to form a labyrinth seal and improve the sealing performance.

[0043] Reference Figure 2 and Figure 3A cover plate 5 is bolted to the bottom of the slide plate 4. An elastic component 6 is installed between the cover plate 5 and the fixed plate 30 to elastically drive the cover plate 5 to move upward. The elastic component 6 includes a height-adjustable seat 60, a protrusion 61, and a compression spring 62. The height-adjustable seat 60 includes a support plate 600, a screw 601, and a nut 602. The support plate 600 is horizontally arranged. The screw 601 is vertically fixed to the bottom surface of the support plate 600 and passes through the fixed plate 30. There are two nuts 602, which are threaded onto the screw 601. One nut 602 abuts against the top surface of the fixed plate 30, and the other nut 602 abuts against the bottom surface of the fixed plate 30.

[0044] Reference Figure 3 and Figure 5 The protruding posts 61 are fixedly connected to the bottom surface of the cover plate 5 and the top surface of the support plate 600, respectively. Compression springs 62 are sleeved on the upper and lower protruding posts 61, and the compression springs 62 have an elastic tendency to drive the cover plate 5 upward. The limiting assembly 7 includes a guide rod 70, a sleeve 71, and a limiting block 72. The guide rod 70 is vertically inserted through and fixedly connected to the fixed plate 30. The sleeve 71 is fixedly connected to the bottom surface of the cover plate 5 and slidably sleeved on the guide rod 70. A hole is opened on the cover plate 5 corresponding to the position of the sleeve 71. The guide rod 70 and the sleeve 71 cooperate with each other to improve the stability of the cover plate 5 when moving up and down, and at the same time, they limit the movement of the cover plate 5 in the horizontal direction.

[0045] Reference Figure 5 and Figure 6 Multiple limiting blocks 72 are evenly arranged along the length of the support base 3 and fixed to the inner side of the vertical plate of the support base 3. Correspondingly, multiple limiting grooves 50 are opened on the side of the cover plate 5, and the limiting blocks 72 are inserted into the limiting grooves 50. Thus, with the cooperation of the limiting blocks 72 and the limiting grooves 50, the movement of the cover plate 5 in the three horizontal directions is restricted, thereby improving its vertical movement stability.

[0046] Reference Figure 4 and Figure 7 The lubrication assembly 8 includes an oil injection pipe 80 and graphite pillars 81. The oil injection pipe 80 is vertically installed and fixed to the support base 3, the fixing plate 30, the cover plate 5, and the slide plate 4. An oil reservoir 42 is provided on the top surface of the slide plate 4, and the top end of the oil injection pipe 80 is connected to the oil reservoir 42. Grease enters the oil reservoir 42 from bottom to top through the oil injection pipe 80, lubricating the top surface of the slide plate 4. Multiple graphite pillars 81 are provided and embedded in the top surface of the slide plate 4 to increase the self-lubricating effect of the slide plate 4 and form an oil film with the injected small amount of grease to enhance the sealing effect, saving 2 / 3 of the amount of lubricating grease compared to ordinary slide rail seals.

[0047] Reference Figure 1 and Figure 3The protective component 9 includes a telescopic connecting plate 90, a first baffle 91, a second baffle 92, and a buckle 93. The telescopic connecting plate 90 is a stainless steel sheet and is located on the side of the fixed plate 30 near the wheel of the sintering trolley 1. One end of the telescopic connecting plate 90 is fixed to the side wall of the cover plate 5 with screws, and the other end of the telescopic connecting plate 90 is fixed to the side wall of the fixed plate 30 with screws. The first baffle 91 is located on the side of the telescopic connecting plate 90 near the wheel of the sintering trolley 1.

[0048] Reference Figure 3 The top of baffle 91 is fixed to the side wall of slide plate 4 with screws, and the bottom of baffle 91 rests on the side wall of the horizontal plate of support base 3. Baffle 92 is located on the side of the vertical plate of support base 3 away from the wheel of sintering trolley 1. Buckle 93 is fixed to the side wall of slide plate 4 away from the wheel of sintering trolley 1. Buckle 93 is L-shaped and extends upward. Baffle 92 is hooked and fixed to buckle 93. Protective component 9 is used to block external impurities from entering in order to avoid affecting the normal operation of slide plate 4, cover plate 5, elastic component 6, limiting component 7 and lubrication component 8.

[0049] The implementation principle of the self-lubricating elastic compensation sealing device for the sintering machine side slide rail in this embodiment is as follows: During the operation of the sintering trolley 1, the slide plate 4 is elastically supported by the elastic component 6 and subjected to uniform force, ensuring that it remains tightly fitted to the bottom of the sintering trolley 1. The elasticity is adjustable, resulting in a constant contact pressure between the sintering trolley 1's sliding plate and the side slide rail, thus achieving a significant sealing effect. Adjacent slide plates 4 are engaged by a snap-fit ​​block 40 and a snap-fit ​​groove 41, extending the flow path, improving the sealing effect, achieving maintenance-free operation throughout its lifespan, reducing maintenance costs, and increasing the uptime.

[0050] The elastic component 6 is located inside the sealing device, which reduces heat and increases service life. The telescopic connecting plate 90, baffle 1 91 and baffle 2 92 can prevent small particles from entering the height-adjustable seat 60 from both sides, reducing the risk of damage to the elastic component 6.

[0051] When the contact surface between the slide plate 4 and the sintering trolley 1 wears, the adjusting nut 602 causes the height-adjustable seat 60 and the compression spring 62 to rise as a whole. While ensuring the constant elasticity of the compression spring 62, the slide plate 4 can continue to be used, thus effectively extending its service life. When the elastic component 6 experiences insufficient elasticity due to long-term use, resulting in decreased sealing performance, it is not necessary to remove the sintering trolley 1 and disassemble the entire sealing system. Only during shutdown, the baffle 91, the telescopic connecting plate 90, the height-adjustable seat 60, and the compression spring 62 need to be removed, and a new elastic component 6 can be replaced, thus reducing maintenance costs.

[0052] The graphite pillars 81 embedded on the top surface of the slide plate 4 form a mixed oil film with the grease output from the oil injection pipe 80, which not only reduces the amount of grease used but also improves the self-lubricating effect. The limiting component 7 uses two methods for limiting and guiding: the guide rod 70 cooperates with the sleeve 71 to limit the cover plate 5 in all horizontal directions while ensuring its vertical movement stability; the limiting block 72 cooperates with the limiting groove 50 to limit the cover plate 5 in three horizontal directions while improving its vertical movement stability, thereby preventing the slide plate 4 from deviating and effectively ensuring the stability and reliability of the sealing device.

[0053] This utility model's self-lubricating elastic compensation sealing device for the sintering machine side slide adopts a unique lower elastic sealing structure, ensuring that the sealing performance is unaffected by the trolley's operating conditions. This significantly improves overall sealing performance, extends the device's service life, and makes maintenance and replacement more convenient, thereby enhancing the stability and production efficiency of sintering operations. The design and implementation of this sealing device represents a technological innovation in the field of sintering machine sealing and even industrial sealing. It can be adapted and applied as a key sealing technology in similar operating conditions to reduce resource consumption and save production costs.

[0054] The above are all preferred embodiments of this utility model, and are not intended to limit the scope of protection of this utility model. Therefore, all equivalent changes made to the structure, shape and principle of this utility model should be covered within the scope of protection of this utility model.

Claims

1. A self-lubricating elastic compensation sealing device for a sintering machine side slide, disposed between the sintering trolley (1) and the wind box side beam (2), characterized in that: It includes a support base (3) fixed to the top surface of the side beam (2) of the wind box, a fixing plate (30) is fixed horizontally on the support base (3), a sliding plate (4) is provided above the fixing plate (30), a cover plate (5) is fixed below the sliding plate (4), an elastic component (6) is provided between the cover plate (5) and the fixing plate (30) for elastically driving the sliding plate (4) to move upward, a limiting component (7) is provided between the cover plate (5) and the fixing plate (30) for limiting the lateral movement of the cover plate (5), and a lubrication component (8) for forming an oil film is installed on the sliding plate (4).

2. The self-lubricating elastic compensation sealing device for the sintering machine side slide as described in claim 1, characterized in that: The elastic component (6) includes a height-adjustable seat (60), with protrusions (61) fixedly connected to the top surface of the height-adjustable seat (60) and the bottom surface of the cover plate (5), and a compression spring (62) is sleeved between the upper and lower protrusions (61).

3. The self-lubricating elastic compensation sealing device for the sintering machine side slide as described in claim 2, characterized in that: The height-adjustable seat (60) includes a support plate (600) for fixing the protrusion (61). A screw (601) is vertically fixed to the bottom surface of the support plate (600). The screw (601) passes through the fixing plate (30). At least two nuts (602) are threaded onto the screw (601). One nut (602) abuts against the top surface of the fixing plate (30), and the other nut (602) abuts against the bottom surface of the fixing plate (30).

4. The self-lubricating elastic compensation sealing device for the sintering machine side slide as described in claim 1, characterized in that: The limiting component (7) includes a guide rod (70) that is vertically inserted through the fixed plate (30), and a sleeve (71) is fixedly connected to the bottom surface of the cover plate (5). The sleeve (71) is slidably sleeved on the guide rod (70).

5. The self-lubricating elastic compensation sealing device for the sintering machine side slide as described in claim 4, characterized in that: A limiting block (72) is fixedly attached to the side wall of the support base (3), and a limiting groove (50) is opened on the side of the cover plate (5), and the limiting block (72) is inserted into the limiting groove (50).

6. The self-lubricating elastic compensation sealing device for the sintering machine side slide as described in claim 1, characterized in that: The lubrication assembly (8) includes an oil injection pipe (80) that runs from bottom to top through the slide plate (4), and an oil reservoir (42) connected to the oil injection pipe (80) is provided on the top surface of the slide plate (4).

7. The self-lubricating elastic compensation sealing device for the sintering machine side slide as described in claim 6, characterized in that: The top surface of the skateboard (4) is embedded with several graphite pillars (81).

8. The self-lubricating elastic compensation sealing device for the sintering machine side slide as described in claim 1, characterized in that: One end of the slide (4) is provided with a snap-fit ​​block (40), and the other end of the slide (4) is provided with a snap-fit ​​groove (41). Two adjacent slides (4) are snapped together by the snap-fit ​​block (40) and the snap-fit ​​groove (41).

9. The self-lubricating elastic compensation sealing device for the sintering machine side slide according to any one of claims 1-8, characterized in that: It also includes a protective component (9), which includes a telescopic connecting plate (90), one end of which is fixed to the side of the cover plate (5), and the other end of which is fixed to the side of the fixing plate (30).

10. The self-lubricating elastic compensation sealing device for the sintering machine side slide according to claim 9, characterized in that: The protective component (9) also includes a first baffle (91) and a second baffle (92). The first baffle (91) is vertically arranged on the side of the support base (3) near the wheel of the sintering trolley (1). The top of the first baffle (91) is fixed to the side of the slide plate (4). The second baffle (92) is arranged on the side of the support base (3) away from the wheel of the sintering trolley (1). A buckle (93) is fixed to the side of the slide plate (4). The second baffle (92) is hooked and fixed to the buckle (93).

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