Chain seal for a movable fume hood of a converter

Abstract

The present disclosure relates to the technical field of converter movable fume hood chain sealing device, and one embodiment of the present disclosure provides a converter movable fume hood chain sealing device, which comprises a movable fume hood lifting chain, a chain fixing cover, a moving sleeve, a fixing sleeve, a moving sleeve fixing sealing cover, magnetic powder and a strong magnetic ring. The chain fixing cover is installed on the top of the outer side of the movable fume hood lifting chain and synchronously lifts with the movable fume hood lifting chain. The moving sleeve is installed on the lower side of the chain fixing cover and synchronously lifts with the chain fixing cover. The fixing sleeve is covered on the outer side of the moving sleeve and is fully welded with the periphery platform of the movable fume hood. The cavity between the moving sleeve and the fixing sleeve is a filling cavity. The moving sleeve fixing sealing cover is buckled on the upper side of the fixing sleeve. The above technical solution is used to solve the technical problem that the movable fume hood chain sealing device in the prior art is difficult to realize dynamic sealing of flue gas during lifting of the movable fume hood.

Description

Technical Field

[0001] The embodiments disclosed herein relate to the technical field of converter movable fume hood chain sealing devices, specifically, to a converter movable fume hood chain sealing device. Background Technology

[0002] In the steelmaking production system of the metallurgical industry, the converter movable fume hood is one of the important parts of the converter vaporization cooling flue. During the smelting process of the converter, carbon monoxide generated in the converter flue gas is recovered through the vaporization cooling flue. The carbon monoxide concentration is the main indicator of converter gas recovery. In order to meet the carbon monoxide concentration, the movable fume hood must be able to move up and down during converter smelting to prevent air at the furnace mouth from entering the vaporization flue and causing secondary combustion of carbon monoxide in the flue gas. However, when the movable fume hood moves up and down, a large amount of smoke and dust will overflow through the fume hood lifting chain, which does not meet environmental protection requirements. Therefore, a movable fume hood chain sealing device is required.

[0003] The existing movable fume hood chain sealing device has a relatively simple structure. It usually uses rubber seals to seal the movable fume hood chain, which has a poor sealing effect and makes it difficult to achieve dynamic sealing of the smoke when the movable fume hood is raised and lowered. Utility Model Content

[0004] To overcome the above-mentioned defects, the embodiments of this disclosure provide a converter movable fume hood chain sealing device to solve the technical problem that the movable fume hood chain sealing device in the prior art is difficult to achieve dynamic sealing of flue gas when the movable fume hood is raised and lowered.

[0005] According to one aspect, at least one embodiment of this disclosure provides a chain sealing device for a converter movable fume hood, including a movable fume hood lifting chain, and further including a chain fixing cover, a movable sleeve, a fixed sleeve, a movable sleeve fixing sealing cover, magnetic powder, and a strong magnetic ring. The chain fixing cover is installed on the top of the outer side of the movable fume hood lifting chain and moves synchronously with the movable fume hood lifting chain. The movable sleeve is installed on the lower side of the chain fixing cover and moves synchronously with the chain fixing cover. The fixed sleeve covers the outer side of the movable sleeve and is flush with the periphery of the movable fume hood. The platform is fully welded. The cavity between the movable sleeve and the fixed sleeve is a filled cavity. The movable sleeve fixed sealing cover is fastened to the upper side of the fixed sleeve and covers the outer side of the movable sleeve. The inner side of the movable sleeve fixed sealing cover is in contact with the outer side of the movable sleeve. The magnetic powder is filled in the filled cavity. The magnetic powder is used to seal between the movable sleeve and the fixed sleeve. Three strong magnetic rings are provided on the outer side of the fixed sleeve. The three strong magnetic rings are arranged vertically. The strong magnetic rings are used to limit the magnetic attraction of the magnetic powder.

[0006] As a preferred embodiment of the converter movable fume hood chain sealing device of this utility model, in order to achieve the snap-fit ​​positioning of the movable sleeve fixed sealing cover after it is fastened to the fixed sleeve, snap-fit ​​mechanisms are provided on both sides of the outer side of the fixed sleeve. The snap-fit ​​mechanism includes a housing, an adjusting rod, a transmission plate, a snap-fit ​​block, and a return spring. The housing is installed on the outer side of the fixed sleeve. The adjusting rod is inserted into the outer side of the housing and can move horizontally inside the housing. The transmission plate is installed on the inner end of the adjusting rod and moves synchronously with the adjusting rod. The snap-fit ​​block is installed on the inner side of the transmission plate and moves synchronously with the transmission plate. The return spring is sleeved on the outer side of the adjusting rod. The two ends of the return spring are respectively connected to the housing and the transmission plate. Snap-fit ​​plates are installed on both sides of the outer side of the movable sleeve fixed sealing cover. The snap-fit ​​plates are inserted into the housing. Snap-fit ​​grooves are opened on the outer side of the snap-fit ​​plates. The width of the snap-fit ​​grooves is adapted to the width of the snap-fit ​​block.

[0007] As a preferred embodiment of the converter movable fume hood chain sealing device of this utility model, in order to achieve sliding limit of the transmission plate and ensure the stability of the transmission plate when sliding, limit slide rails are installed on both sides of the inner wall of the shell. The limit slide rails are I-shaped, and the transmission plate is slidably connected to the limit slide rails.

[0008] As a preferred embodiment of the converter movable fume hood chain sealing device of this utility model, in order to block and limit the transmission plate on the limiting slide rail and prevent the transmission plate from derailing, a limiting baffle is installed on the inner side of the limiting slide rail. The limiting baffle is rectangular in shape, and the outer side of the limiting baffle is connected to the inner wall of the shell.

[0009] As a preferred embodiment of the converter movable fume hood chain sealing device of this utility model, in order to lift the magnet filled into the filling cavity and ensure the stability of the magnetic powder inside the filling cavity, a magnetic powder support is provided in the middle of the inner wall of the fixed sleeve, and the magnetic powder support is used to lift the magnetic powder.

[0010] As a preferred embodiment of the converter movable fume hood chain sealing device of this utility model, in order to seal the filling cavity by the magnetic powder, thereby achieving dynamic sealing of the flue gas when the movable fume hood is raised and lowered, the magnetic powder support is provided with multiple smoke passage holes, and the multiple smoke passage holes are arranged in a ring on the magnetic powder support.

[0011] As a preferred embodiment of the converter movable fume hood chain sealing device of this utility model, in order to achieve rapid positioning when the movable sleeve fixed sealing cover is fastened, a plurality of positioning rods are installed on the inner top wall of the movable sleeve fixed sealing cover, and a plurality of positioning slots are opened on the upper side of the fixed sleeve, wherein the inner diameter of the positioning slots is adapted to the outer diameter of the positioning rods.

[0012] The beneficial effects of the embodiments disclosed herein are as follows:

[0013] In this disclosure, the chain fixing cover, the movable sleeve and the fixed sleeve are coordinated to enable the movable sleeve to move up and down synchronously with the lifting chain of the movable fume hood, thereby achieving dynamic sealing of the flue gas when the movable fume hood is raised and lowered, reducing the probability of flue gas overflowing through the lifting chain of the movable fume hood, and ensuring the effectiveness of the device.

[0014] In this disclosure, the sealing of the movable sleeve during movement is achieved by the cooperation of the fixed sealing cover, magnetic powder and strong magnetic ring, which further enhances the sealing effect of the device, so that the device can better dynamically seal the flue gas when the movable fume hood is raised and lowered.

[0015] Compared with the existing movable fume hood chain sealing device, which has the technical problem of difficulty in achieving dynamic sealing of flue gas when the movable fume hood is raised and lowered, this disclosure has the advantages of simple structure, convenient installation, simple maintenance, effective prevention of flue gas leakage during production, and increasing carbon monoxide concentration while meeting environmental protection requirements. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this disclosure, the accompanying drawings used in the description of the embodiments of this disclosure will be briefly introduced below. Obviously, the drawings described below are merely some exemplary embodiments of this disclosure. For those skilled in the art, other drawings can be obtained based on the content of the exemplary embodiments of this disclosure and these drawings without any creative effort.

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0018] Figure 2 This is a schematic diagram of the structure of the present invention when the movable smoke hood is not lifted by the movable smoke hood lifting chain and the movable sleeve is in the state of being inside the fixed sleeve.

[0019] Figure 3 This is a schematic diagram of the structure of the movable fume hood of this utility model, after being lifted by the movable fume hood lifting chain, with the movable sleeve in the state of being inside the fixed sleeve;

[0020] Figure 4 This utility model Figure 2Enlarged schematic diagram of the local structure at point A;

[0021] Figure 5 This is a vertical sectional view of the internal structure of the snap-fit ​​mechanism of this utility model.

[0022] In the diagram: 1. Movable fume hood lifting chain; 2. Chain fixing cover; 3. Movable sleeve; 4. Fixed sleeve; 5. Movable sleeve fixing sealing cover; 6. Magnetic powder; 7. Strong magnetic ring; 8. Snap-fit ​​plate; 9. Limit slide rail; 10. Limit baffle; 11. Magnetic powder bracket;

[0023] 101. Housing; 102. Adjusting rod; 103. Transmission plate; 104. Snap-fit ​​block; 105. Return spring;

[0024] 401. Fill the cavity. Detailed Implementation

[0025] The present disclosure will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present disclosure and are not intended to limit the scope of the disclosure.

[0026] To keep the drawings concise, each drawing only schematically shows the parts relevant to the disclosure; these do not represent the actual structure of the product. Furthermore, for ease of understanding, in some drawings, only one of components with the same structure or function is schematically shown, or only one is labeled. In this document, "one" not only means "only one," but can also mean "more than one," and "several" includes "two" and "more than two."

[0027] In this document, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linkage" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this disclosure based on the specific circumstances.

[0028] In this disclosure, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0029] In the description of this embodiment, terms such as "upper," "lower," "left," and "right" are based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of description and simplification of operation, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this disclosure.

[0030] Furthermore, in the description of this application, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0031] like Figures 1-5 As shown, this invention discloses a converter movable fume hood chain sealing device according to an embodiment of the present invention. The device includes a movable fume hood lifting chain 1, a chain fixing cover 2, a movable sleeve 3, a fixed sleeve 4, a movable sleeve fixing sealing cover 5, magnetic powder 6, and a strong magnetic ring 7. Compared with existing movable fume hood chain sealing devices, this invention addresses the technical problem of dynamically sealing the flue gas during the lifting and lowering of the movable fume hood. In this embodiment, the chain fixing cover 2, the movable sleeve 3, and the fixed sleeve 4 work together to allow the movable sleeve 3 to move synchronously with the movable fume hood lifting chain 1, thereby achieving dynamic sealing of the flue gas during the lifting and lowering of the movable fume hood. This reduces the probability of flue gas overflowing through the movable fume hood lifting chain 1, ensuring the device's effectiveness. The movable sleeve fixing sealing cover 5, the magnetic powder 6, and the strong magnetic ring 7 work together to seal the movable sleeve 3 during movement, further enhancing the device's sealing effect. This allows the device to better dynamically seal the flue gas during the lifting and lowering of the movable fume hood.

[0032] like Figure 1 , Figure 2 and Figure 3As shown, the chain fixing cover 2 is installed on the top of the outer side of the movable fume hood lifting chain 1, the movable sleeve 3 is installed on the lower side of the chain fixing cover 2, and the fixing sleeve 4 covers the outer side of the movable sleeve 3 and is fully welded to the peripheral platform of the movable fume hood. The cooperation of the chain fixing cover 2, the movable sleeve 3 and the fixing sleeve 4 allows the movable sleeve 3 to move up and down synchronously with the movable fume hood lifting chain 1, thereby achieving dynamic sealing of the smoke during the lifting of the movable fume hood. Figure 4 As shown, the cavity between the movable sleeve 3 and the fixed sleeve 4 is a filled cavity 401. The movable sleeve fixed sealing cover 5 is fastened to the upper side of the fixed sleeve 4 and covers the outer side of the movable sleeve 3. Multiple positioning rods are installed on the inner top wall of the movable sleeve fixed sealing cover 5. Multiple positioning slots are opened on the upper side of the fixed sleeve 4. The inner diameter of the positioning slots matches the outer diameter of the positioning rods. The positioning rods can be inserted into the fixed sleeve 4 through the positioning slots, thereby realizing quick positioning when the movable sleeve fixed sealing cover 5 is fastened. The inner side of the movable sleeve fixed sealing cover 5 is in contact with the outer side of the movable sleeve 3. The movable sleeve fixed sealing cover 5 cannot be fixed to the movable sleeve 3, which is used to ensure... During the normal lifting and lowering of the movable sleeve 3, magnetic powder 6 is filled into the filling cavity 401. A magnetic powder support 11 is provided in the middle of the inner wall of the fixed sleeve 4. The magnetic powder support 11 has multiple smoke passage holes arranged in a ring. The magnetic powder support 11 can support the magnetic powder 6 filled into the filling cavity 401, thereby ensuring the stability of the magnetic powder 6 after it is filled into the filling cavity 401. Three strong magnetic rings 7 are provided on the outer side of the fixed sleeve 4. The three strong magnetic rings 7 are arranged vertically. The cooperation of the movable sleeve fixed sealing cover 5, magnetic powder 6 and strong magnetic rings 7 can achieve sealing when the movable sleeve 3 moves, further enhancing the sealing effect of the device.

[0033] like Figure 1 As shown, both sides of the outer side of the fixed sleeve 4 are provided with snap-fit ​​mechanisms, and both sides of the outer side of the movable sleeve fixed sealing cover 5 are installed with snap-fit ​​plates 8, as shown. Figure 5As shown, the snap-fit ​​mechanism includes a housing 101, an adjusting rod 102, a transmission plate 103, a snap-fit ​​block 104, and a return spring 105. The snap-fit ​​plate 8 is inserted into the inside of the housing 101. A snap-fit ​​groove is provided on the outer side of the snap-fit ​​plate 8. The width of the snap-fit ​​groove is adapted to the width of the snap-fit ​​block 104. The cooperation between the snap-fit ​​mechanism and the snap-fit ​​plate 8 can realize the snap-fit ​​positioning of the movable sleeve fixing sealing cover 5 after it is fastened to the fixed sleeve 4, thereby ensuring the stability of the movable sleeve fixing sealing cover 5 after it is fastened. Both sides of the inner wall of the housing 101 are equipped with The limiting slide rail 9 is I-shaped, and the transmission plate 103 is slidably connected to the limiting slide rail 9. The limiting slide rail 9 can limit the sliding of the transmission plate 103, thereby ensuring the stability of the transmission plate 103 when sliding. A limiting baffle 10 is installed on the inner side of the limiting slide rail 9. The limiting baffle 10 is rectangular in shape, and the outer side of the limiting baffle 10 is connected to the inner wall of the housing 101. The limiting baffle 10 can block and limit the transmission plate 103 on the limiting slide rail 9, preventing the transmission plate 103 from derailing.

[0034] Working principle:

[0035] First, the fixed sleeve 4 is fitted onto the outside of the movable sleeve 3. Then, the fixed sleeve 4 and the peripheral platform of the movable fume hood are fully welded. The moving distance of the movable fume hood lifting chain 1 is then confirmed to ensure the effective stroke of the movable sleeve 3 within the fixed sleeve 4. Magnetic powder 6 is then filled into the filling cavity 401 between the movable sleeve 3 and the fixed sleeve 4. After filling, the worker fastens the movable sleeve fixed sealing cover 5 onto the fixed sleeve 4. During the fastening process, the snap-fit ​​plate 8 is inserted into the interior of the housing 101. During the insertion of the snap-fit ​​plate 8, the snap-fit ​​block 104 is pushed to move outward. The snap-fit ​​block 104 drives the transmission plate 103 to slide outward along the limit slide rail 9. The transmission plate 103 compresses the return spring 105. When the snap-fit ​​slots opened on the snap-fit ​​block 104 and the snap-fit ​​plate 8 collide, the transmission plate 103, under the action of the return spring 105, drives the snap-fit ​​block 104 and the snap-fit ​​plate 8 to snap together, thereby realizing the overall installation of the device.

[0036] When the movable fume hood lifting chain 1 drives the movable fume hood to rise and fall, the chain fixing cover 2 and the movable sleeve 3 rise and fall synchronously with the movable fume hood lifting chain 1. The smoke overflowing during the lifting and falling of the movable fume hood enters the interior of the fixing sleeve 4. The magnetic powder 6 filling the filling cavity 401 seals and blocks the smoke overflowing during the lifting and falling of the movable fume hood, thereby achieving dynamic sealing of the overflowing smoke when the movable fume hood is lifted and fallen.

[0037] It should be noted that the above embodiments are only used to illustrate the technical solutions of this disclosure and are not intended to limit it. Although this disclosure has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this disclosure without departing from the spirit and scope of the technical solutions of this disclosure, and all such modifications and substitutions should be covered within the scope of the claims of this disclosure.

Claims

1. A chain sealing device for a converter movable fume hood, comprising a movable fume hood lifting chain (1), characterized in that, Also includes: Chain fixing cover (2), the chain fixing cover (2) is installed on the top of the outside of the movable smoke hood lifting chain (1) and moves up and down synchronously with the movable smoke hood lifting chain (1); The movable sleeve (3) is installed on the lower side of the chain fixing cover (2) and moves up and down synchronously with the chain fixing cover (2); Fixed sleeve (4), the fixed sleeve (4) covers the outside of the movable sleeve (3) and is fully welded to the periphery platform of the movable fume hood, the cavity between the movable sleeve (3) and the fixed sleeve (4) is a filled cavity (401). The movable sleeve fixing sealing cover (5) is fastened to the upper side of the fixed sleeve (4) and covers the outer side of the movable sleeve (3). The inner side of the movable sleeve fixing sealing cover (5) is in contact with the outer side of the movable sleeve (3). Magnetic powder (6) is filled in the filling cavity (401) and is used to seal between the movable sleeve (3) and the fixed sleeve (4); Strong magnetic rings (7): Three strong magnetic rings (7) are provided on the outside of the fixed sleeve (4). The three strong magnetic rings (7) are arranged vertically. The strong magnetic rings (7) are used to magnetically attract and limit the magnetic powder (6).

2. The converter movable fume hood chain sealing device according to claim 1, characterized in that, Both sides of the outer side of the fixed sleeve (4) are provided with a snap-fit ​​mechanism, the snap-fit ​​mechanism including: A housing (101) is mounted on the outside of the fixed sleeve (4); An adjusting rod (102) is inserted into the outside of the housing (101) and is capable of moving horizontally inside the housing (101); A transmission plate (103) is installed on the inner end of the adjusting rod (102) and moves synchronously with the adjusting rod (102); A snap-fit ​​block (104) is installed on the inner side of the transmission plate (103) and moves synchronously with the transmission plate (103); A return spring (105) is sleeved on the outside of the adjusting rod (102), and the two ends of the return spring (105) are connected to the housing (101) and the transmission plate (103) respectively.

3. The converter movable fume hood chain sealing device according to claim 2, characterized in that, The movable sleeve fixing sealing cover (5) has snap-fit ​​plates (8) installed on both sides of its outer side. The snap-fit ​​plates (8) are inserted into the inside of the housing (101). The snap-fit ​​groove is opened on the outer side of the snap-fit ​​plate (8). The width of the snap-fit ​​groove is adapted to the width of the snap-fit ​​block (104).

4. The chain sealing device for a converter movable fume hood according to claim 2, characterized in that, Both sides of the inner wall of the housing (101) are equipped with limiting slide rails (9), which are I-shaped. The transmission plate (103) is slidably connected to the limiting slide rails (9).

5. The converter movable fume hood chain sealing device according to claim 4, characterized in that, A limiting baffle (10) is installed on the inner side of the limiting slide rail (9). The limiting baffle (10) is rectangular in shape, and the outer side of the limiting baffle (10) is connected to the inner wall of the housing (101).

6. The chain sealing device for a converter movable fume hood according to claim 1, characterized in that, A magnetic powder support (11) is provided in the middle of the inner wall of the fixed sleeve (4), and the magnetic powder support (11) is used to support the magnetic powder (6).

7. A converter movable fume hood chain sealing device according to claim 6, characterized in that, The magnetic powder holder (11) has multiple smoke passage holes, which are arranged in a ring on the magnetic powder holder (11).

8. The chain sealing device for a converter movable fume hood according to claim 1, characterized in that, Multiple positioning rods are installed on the inner top wall of the movable sleeve fixing sealing cover (5), and multiple positioning slots are opened on the upper side of the fixing sleeve (4). The inner diameter of the positioning slots is matched with the outer diameter of the positioning rods.

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