Modularized connection sealing structure of explosion-proof electric appliance

Abstract

The invention relates to the field of modular sealing, and discloses an explosion-proof electric appliance modular connection sealing structure, which comprises a first sealing cover, a second sealing cover and a sealing part, the second sealing cover is arranged on one side of the first sealing cover and used for being attached to the inner wall of the explosion-proof power distribution cabinet; one end of the sealing connecting seat is installed on the first sealing cover, the sealing connecting seat penetrates through the explosion-proof power distribution cabinet and the second sealing cover, and the sealing connecting seat is used for sealing a threading hole in the explosion-proof power distribution cabinet. According to the explosion-proof power distribution cabinet sealing structure, by adopting the double-layer design of the first sealing cover and the second sealing cover, the sealing structure can adapt to explosion-proof power distribution cabinets with different thicknesses, and by adjusting the distance between the sealing seats and the expansion degree of the air bag, the sealing structure can adapt to cables or pipelines with different diameters; and meanwhile, the tight fit between the sealing material and the open hole is ensured.

Description

Technical Field

[0001] The invention relates to the field of modular sealing, and in particular to a modular connection sealing structure of explosion-proof electrical appliances. Background Art

[0002] The modular connection sealing structure uses multiple independent sealing units (such as seals, gaskets, glands, etc.) to form a complete sealing system. These units can be combined as needed to meet different sealing requirements. In the field of electrical industry, with the widespread application of explosion-proof electrical equipment, its safety and reliability have become key factors that cannot be ignored. Especially in some potentially explosive environments, such as petrochemicals, coal mining and other fields, the sealing performance of explosion-proof electrical equipment is directly related to the safe operation of the entire system. As an advanced design concept, the modular connection sealing structure has been increasingly used in explosion-proof electrical equipment in recent years because of its easy installation, maintenance and upgrade characteristics.

[0003] The design of existing modular connection sealing structures is often based on standardized opening sizes and shapes. However, the openings of old electrical equipment may be deformed due to age, design differences or long-term use, making it impossible to perfectly match the newly designed sealing structure. Even if they can be installed, the gap or irregular contact between the sealing material and the opening may seriously affect the sealing effect, thereby reducing the sealing performance. Summary of the invention

[0004] The purpose of the present invention is to solve the above-mentioned technical problems existing in the existing modular connection and sealing structures, and to provide an explosion-proof electrical modular connection and sealing structure.

[0005] To achieve the above object, the present invention adopts the following technical solutions:

[0006] An explosion-proof electrical modular connection sealing structure, comprising: a first sealing cover for fitting against the outer wall of an explosion-proof power distribution cabinet; a second sealing cover disposed on one side of the first sealing cover for fitting against the inner wall of the explosion-proof power distribution cabinet; a sealing connection seat, one end of which is installed on the first sealing cover, the sealing connection seat passing through the explosion-proof power distribution cabinet and the second sealing cover, the sealing connection seat being used for sealing the wire passing hole on the explosion-proof power distribution cabinet; the second sealing cover being arranged to move on the sealing connection seat and approach or move away from the first sealing cover for adapting to explosion-proof power distribution cabinets of different thicknesses; a second airbag installed on the sealing connection seat and arranged to expand when the second sealing cover approaches the first sealing cover for fitting against the inner wall of the wire passing hole of the explosion-proof power distribution cabinet; a second sealing piece installed on the second airbag, the second sealing piece being a multi-layer peelable structure, and each layer can be peeled off from the sealing seat to gradually reduce the thickness of the second sealing piece; a through hole penetratingly formed in the sealing connection seat; two sealing seats installed in the through hole and symmetrically arranged, the two sealing seats being arranged to approach or move away from each other simultaneously for sealing the gap between the wire passing hole and the wire harness; two first sealing pieces respectively installed on the two sealing seats, the first sealing piece being a multi-layer peelable structure, and each layer can be peeled off from the sealing seat to gradually reduce the thickness of the first sealing piece and adjust the effective sealing diameter of the sealing seat for adapting to cables or pipes of different diameters.

[0007] Preferably, the sealing connection seat includes: two control grooves respectively formed on the inner walls on both sides of the through hole, and the two sealing seats are respectively connected in the two control grooves; a first inflation groove formed on the outer ring of the sealing connection seat, and the second airbag is installed in the first inflation groove.

[0008] Preferably, the sealing structure further includes: an adjusting sleeve sleeved on the sealing connection seat, the adjusting sleeve being arranged to drive the two sealing seats to approach or move away from each other simultaneously when rotating on the sealing connection seat; a limiting plate threadedly connected to the adjusting sleeve, the limiting plate contacting the second sealing cover, and the limiting plate being used for driving the second sealing cover to approach the first sealing cover.

[0009] Preferably, the adjusting sleeve includes: an internal gear installed on the inner ring of the adjusting sleeve; the sealing connection seat further includes: two fixing grooves formed on the outer wall of the sealing connection seat and symmetrically arranged; two control gears respectively installed in the two fixing grooves; two first bevel gears respectively installed on the two control gears; two second bevel gears respectively arranged in the two fixing grooves, and the second bevel gears are meshed with the first bevel gears.

[0010] Preferably, the sealing seat includes: a second inflation groove formed in the inner ring of the sealing seat; a first airbag installed in the second inflation groove, the first airbag being in contact with the first sealing piece; an adjustment groove formed on one side of the sealing seat, an inflation hole being formed between the adjustment groove and the second inflation groove; a moving seat installed in the adjustment groove, one side of the moving seat being connected to a second piston, the second piston being disposed in the inflation hole; a second elastic member having one end installed on the moving seat and the other end installed on the inner wall of the adjustment groove; a lead screw having one end connected to the moving seat and the other end passing through the control groove and extending into the fixed groove to be connected to a second bevel gear.

[0011] Preferably, the adjusting sleeve further includes: a bearing installed between the adjusting sleeve and the sealing connection seat.

[0012] Preferably, the sealing connection seat further includes: a groove formed in the inner wall of the first inflation groove; a first piston installed in the groove; a first elastic member having one end connected to the first piston and the other end connected to the inner wall of the groove; a moving hole formed in the inner wall of the groove; a control rod disposed in the moving hole, one end of the control rod being connected to the first piston and the other end being in contact with the second sealing cover.

[0013] Preferably, the second airbag includes: a plurality of peelable third sealing pieces, each layer of the third sealing pieces being peelable from the second airbag to gradually reduce the effective sealing diameter of the second airbag.

[0014] Preferably, the first sealing cover includes: a first sealing ring installed on one side of the first sealing cover, the first sealing ring being fitted to the outer wall of the explosion-proof power distribution cabinet.

[0015] Preferably, the second sealing cover includes: a second sealing ring installed on one side of the second sealing cover, the second sealing ring being fitted to the inner wall of the explosion-proof power distribution cabinet.

[0016] The present invention adopts the above technical solutions and has the following technical effects compared with the prior art:

[0017] This solution adopts a double-layer design of the first sealing cover and the second sealing cover, which are respectively fitted to the outer wall and the inner wall of the explosion-proof power distribution cabinet. This not only enhances the sealing effect but also enables the sealing structure to adapt to explosion-proof power distribution cabinets of different thicknesses through the movability of the second sealing cover. By adjusting the distance between the sealing seats and the inflation degree of the airbags, it can further adapt to cables or pipes of different diameters. Both the first sealing piece and the third sealing piece adopt a multi-layer peelable structure, and each layer can be peeled from the sealing seat to gradually reduce the thickness of the sealing piece, thereby adjusting the effective sealing diameter of the sealing seat and enabling the sealing structure to adapt to cables or pipes of different diameters. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1Assembly drawing of the first sealing cover and the sealing connection seat proposed by the present invention.

[0019] Figure 2 Schematic structural diagram of the first sealing cover, the sealing connection seat and the second sealing cover proposed by the present invention.

[0020] Figure 3 Schematic three-dimensional structure diagram proposed by the present invention.

[0021] Figure 4 Another perspective three-dimensional structure diagram proposed by the present invention.

[0022] Figure 5 Schematic cross-sectional structure diagram proposed by the present invention.

[0023] Figure 6 Enlarged cross-sectional view of the sealing connection seat, the sealing seat and the first sealing piece proposed by the present invention.

[0024] Figure 7 Enlarged cross-sectional view of the second sealing cover, the limiting plate and the adjusting sleeve proposed by the present invention.

[0025] Figure 8 Enlarged cross-sectional view of the first sealing cover, the sealing connection seat and the second airbag proposed by the present invention.

[0026] Figure 9 Cross-sectional view of the second airbag proposed by the present invention.

[0027] Figure 10 Schematic structural diagram of the adjusting sleeve, the internal gear and the control gear proposed by the present invention.

[0028] The reference numerals in the figure are:

[0029] 1. First sealing cover; 101. First sealing ring;

[0030] 2. Sealing connection seat; 201. Through hole; 202. Control groove; 203. First inflation groove; 204. Control gear; 205. First bevel gear; 206. Second bevel gear; 207. Groove; 208. First piston; 209. Control rod; 210. First elastic member;

[0031] 3. Second sealing cover; 301. Second sealing ring;

[0032] 4. Sealing seat; 401. Adjusting groove; 402. Second inflation groove; 403. First airbag; 404. Moving seat; 405. Second piston; 406. Second elastic member; 407. Lead screw;

[0033] 5. First sealing piece;

[0034] 6. Limiting plate;

[0035] 7. Second airbag; 701. Second sealing piece;

[0036] 8. Adjusting sleeve; 801. Bearing; 802. Internal gear. Specific implementation mode

[0037] The present invention will be further described below in conjunction with specific embodiments. It should be understood that these embodiments are only used to illustrate the present invention and not to limit the protection scope of the present invention.

[0038] The following illustrates the implementation mode of the present invention through specific specific examples. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through other different specific implementation modes. Various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention.

[0039] Embodiment 1

[0040] Refer to Figures 1-10 , an explosion-proof electrical modular connection sealing structure, comprising: a first sealing cover 1, which is used to fit the outer wall of the explosion-proof power distribution cabinet to ensure that impurities, moisture, etc. in the external environment do not enter the interior of the power distribution cabinet through the connection, improving the overall explosion-proof performance of the explosion-proof power distribution cabinet; a second sealing cover 3, which is arranged on one side of the first sealing cover 1 and is used to fit the inner wall of the explosion-proof power distribution cabinet, further enhancing the sealing effect. Its movable design enables this structure to adapt to explosion-proof power distribution cabinets of different thicknesses, improving the flexibility and versatility of installation.

[0041] A sealing connection seat 2, one end of which is installed on the first sealing cover 1. The sealing connection seat 2 penetrates through the explosion-proof power distribution cabinet and the second sealing cover 3. The sealing connection seat 2 is used to seal the wire passing hole on the explosion-proof power distribution cabinet. As a key component connecting the first sealing cover 1 and the second sealing cover 3, it also penetrates through the explosion-proof power distribution cabinet, effectively sealing the wire passing hole and preventing leakage problems caused by cable or pipeline wiring. The second sealing cover 3 is arranged to move on the sealing connection seat 2 and approach or move away from the first sealing cover 1 to adapt to explosion-proof power distribution cabinets of different thicknesses.

[0042] The second airbag 7 is installed on the sealing connection seat 2 and is configured to expand when the second sealing cover 3 approaches the first sealing cover 1, and is used to fit on the inner wall of the threading hole of the explosion-proof distribution cabinet. When the second sealing cover 3 approaches the first sealing cover 1, it expands and fits tightly on the inner wall of the threading hole of the explosion-proof distribution cabinet, further improving the sealing effect and ensuring the safety inside the explosion-proof distribution cabinet; the second sealing sheet 701 is installed on the second airbag 7, and the second sealing sheet 701 is a multi-layer peelable structure, each layer of which can be peeled off from the sealing seat 4. The through hole 201 is formed on the sealing connection seat 2 to provide a channel for the threading of cables or pipes, and cooperates with the sealing seat 4 and the first sealing sheet 5 to achieve the sealing function; the two sealing seats 4 are installed in the through hole 201 and are symmetrically arranged. The two sealing seats 4 are arranged to be close to or far away from each other at the same time, so as to seal the gap between the threading hole and the wiring harness. By being close to or far away from each other at the same time, the wiring harness can be clamped and tightly attached to the wiring harness, thereby sealing the gap between the threading hole and the wiring harness to prevent external impurities from entering.

[0043] Two first sealing sheets 5 are respectively installed on two sealing seats 4. The first sealing sheet 5 is a multi-layer peelable structure. Each layer can be peeled off from the sealing seat 4 to reduce the thickness of the first sealing sheet 5 layer by layer, and adjust the effective sealing diameter of the sealing seat 4 to adapt to cables or pipes of different diameters. The multi-layer peelable structure allows the thickness of the first sealing sheet 5 to be reduced layer by layer, thereby adjusting the effective sealing diameter of the sealing seat 4 to adapt to cables or pipes of different diameters, thereby improving the versatility and flexibility of the sealing structure.

[0044] The sealing connection seat 2 includes: two control grooves 202, which are respectively opened on the inner walls on both sides of the through hole 201, and the two sealing seats 4 are respectively connected to the two control grooves 202; a first inflation groove 203, which is opened on the outer ring of the sealing connection seat 2, and the second airbag 7 is installed in the first inflation groove 203. The first inflation groove 203 provides a channel for the inflation of the second airbag 7, ensuring that the second airbag 7 can be quickly expanded when needed to achieve a sealing effect.

[0045] The adjusting sleeve 8 is sleeved on the sealed connection seat 2. When the adjusting sleeve 8 is set to rotate on the sealed connection seat 2, it drives the two sealing seats 4 to approach or move away simultaneously. By rotating the adjusting sleeve 8 to drive the two sealing seats 4 to approach or move away simultaneously, the adjustment of the sealing effect is achieved, and its design makes the adjustment of the sealing structure more convenient and rapid; The limiting plate 6 is threadedly connected to the adjusting sleeve 8. The limiting plate 6 contacts the second sealing cover 3. The limiting plate 6 is used to drive the second sealing cover 3 to approach the first sealing cover 1. When the limiting plate 6 rotates spirally on the adjusting sleeve 8, it can push the second sealing cover 3 to approach the first sealing cover 1, so as to ensure that the first sealing cover 1 and the second sealing cover 3 can be closely attached to the explosion-proof power distribution cabinet; The adjusting sleeve 8 includes: an internal gear 802 installed on the inner ring of the adjusting sleeve 8; a bearing 801 installed between the adjusting sleeve 8 and the sealed connection seat 2. The design of the bearing 801 makes the rotation of the adjusting sleeve 8 smoother, reduces friction and wear, and improves the service life of the adjusting sleeve 8.

[0046] The sealed connection seat 2 further includes: two fixed grooves opened on the outer wall of the sealed connection seat 2 and arranged symmetrically; two control gears 204 respectively installed in the two fixed grooves; two first bevel gears 205 respectively installed on the two control gears 204; two second bevel gears 206 respectively arranged in the two fixed grooves. The second bevel gear 206 meshes with the first bevel gear 205. When the adjusting sleeve 8 is rotated, it can drive the internal gear 802 to rotate, and the internal gear 802 can drive the two control gears 204 to rotate simultaneously. The control gear 204 drives the first bevel gear 205 to rotate, and the first bevel gear 205 drives the second bevel gear 206 to rotate. Through the rotation of the second bevel gear 206, the lead screw 407 can be driven to rotate.

[0047] The seal seat 4 includes: a second inflation groove 402, which is opened in the inner ring of the seal seat 4; a first airbag 403, which is installed in the second inflation groove 402, and the first airbag 403 contacts the first sealing piece 5; an adjustment groove 401, which is opened on one side of the seal seat 4, and an inflation hole is opened between the adjustment groove 401 and the second inflation groove 402; a moving seat 404, which is installed in the adjustment groove 401, and a second piston 405 is connected to one side of the moving seat 404, and the second piston 405 is arranged in the inflation hole; a second elastic member 406, one end of which is installed on the moving seat 404, and the other end is installed on the inner wall of the adjustment groove 401; a lead screw 407, one end of which is connected to the moving seat 404, and the other end passes through the control groove 202 and extends into the fixed groove to be connected to the second bevel gear 206. When the lead screw 407 rotates, it can drive the moving seat 404 to move. The moving seat 404 drives the seal seat 4 to move under the connection of the second elastic member 406. The two seal seats 4 can clamp the wire harness passing through the explosion-proof power distribution cabinet. After the two seal seats 4 come into contact, the moving seat 404 continues to move and moves in the adjustment groove 401. The moving seat 404 drives the second piston 405 to move, and the second piston 405 can squeeze gas into the second inflation groove 402, thereby driving the first airbag 403 to expand. After each layer of the multi-layer structure of the first sealing piece 5 is torn off, its inner diameter may not exactly fit the outer diameter of the wire harness. For example, the inner diameter after two first sealing pieces 5 are butted together is 32 mm, and the thickness of each layer of the structure is 2 mm. If the diameter of the wire harness is 31 mm at this time and it is directly butted with the first sealing piece 5, there will be a gap between the two seal seats 4. If one layer of the first sealing piece 5 is torn off, the inner diameter after the two first sealing pieces 5 are butted together is 30 mm, and the first sealing piece 5 cannot completely fit the wire harness. Therefore, at this time, the expansion of the first airbag 403 can be used to make the first sealing piece 5 fit the wire harness more tightly.

[0048] The sealed connection seat 2 further includes: a groove 207 formed on the inner wall of the first inflation groove 203; a first piston 208 installed in the groove 207; a first elastic member 210, with one end connected to the first piston 208 and the other end connected to the inner wall of the groove 207; a moving hole formed on the inner wall of the groove 207; a control rod 209 disposed in the moving hole, one end of the control rod 209 is connected to the first piston 208, and the other end is in contact with the second sealing cover 3. When the limiting plate 6 is rotated alone, the limiting plate 6 moves on the adjusting sleeve 8 having a threaded groove structure. The limiting plate 6 can push the second sealing cover 3 to move. The second sealing cover 3 pushes the control rod 209, and the control rod 209 drives the first piston 208 to move. The first piston 208 can inflate the first inflation groove 203, causing the second airbag 7 to expand, and driving the second sealing piece 701 to fit more closely to the wire passing hole of the explosion-proof power distribution cabinet. For example, the outer diameter of the second sealing piece 701 is 50 mm, and the thickness of each layer of the structure is 2 mm. If the diameter of the wire passing hole is 49 mm at this time, when the sealed connection seat 2 is directly inserted into the wire passing hole, the second sealing piece 701 cannot enter the wire passing hole. If one layer of the second sealing piece 701 is torn off, the outer diameter of the second sealing piece 701 is 48 mm, and the second sealing piece 701 cannot completely fit the wire passing hole. Therefore, the expansion of the second airbag 7 can be used to make the second sealing piece 701 fit more closely to the inner wall of the wire passing hole; The first elastic member 210 and the second elastic member 406 are springs.

[0049] The second airbag 7 includes: a plurality of peelable third sealing pieces, and each layer of the third sealing pieces can be peeled off from the second airbag 7 to gradually reduce the effective sealing diameter of the second airbag 7.

[0050] Embodiment 2

[0051] Refer to Figures 3-4 , the difference between this embodiment and Embodiment 1 is that: the first sealing cover 1 includes: a first sealing ring 101 installed on one side of the first sealing cover 1, and the first sealing ring 101 fits against the outer wall of the explosion-proof power distribution cabinet;

[0052] The second sealing cover 3 includes: a second sealing ring 301 installed on one side of the second sealing cover 3, and the second sealing ring 301 fits against the inner wall of the explosion-proof power distribution cabinet.

[0053] During use, prepare the first sealing cover 1 and the second sealing cover 3, ensuring that the first sealing ring 101 and the second sealing ring 301 are respectively installed on their respective sides for fitting against the outer wall and the inner wall of the explosion-proof power distribution cabinet. Prepare the sealing connection seat 2 and ensure that the second airbag 7 is installed in the first inflation groove 203, and the first inflation groove 203 is located on the outer ring of the sealing connection seat 2. Prepare two sealing seats 4 and ensure that they are installed in the through hole 201 and are symmetrically arranged. Install two first sealing sheets 5 on the sealing seats 4. The first sealing sheet 5 is a multi-layer peelable structure. Install one end of the sealing connection seat 2 on the first sealing cover 1, ensuring that the through hole 201 is aligned with the wire passing hole of the explosion-proof power distribution cabinet. Place the second sealing cover 3 at the other end of the sealing connection seat 2 and ensure that it can move along the sealing connection seat 2 to adapt to explosion-proof power distribution cabinets of different thicknesses. According to the thickness of the explosion-proof power distribution cabinet, rotate the adjusting sleeve 8. The adjusting sleeve 8 drives two control gears 204 to rotate through the internal gear 802. The control gears 204 drive the first bevel gear 205 to rotate. The first bevel gear 205 drives the second bevel gear 206 to rotate, thereby driving the lead screw 407 to rotate. The rotation of the lead screw 407 drives the moving seat 404 to move in the adjusting groove 401. The moving seat 404 is connected to the inner wall of the adjusting groove 401 through the second elastic member 406, thereby driving the two sealing seats 4 to approach or move away from each other simultaneously to clamp and closely adhere to the wire harness. When the two sealing seats 4 come into contact, the moving seat 404 continues to move and squeezes gas into the second inflation groove 402 through the second piston 405, causing the first airbag 403 to expand and ensuring that the first sealing sheet 5 fits tightly against the wire harness. Rotate the limiting plate 6. The limiting plate 6 moves on the adjusting sleeve 8, pushing the second sealing cover 3 closer to the first sealing cover 1. When the second sealing cover 3 moves, it pushes the control rod 209. The control rod 209 drives the first piston 208 to move in the groove 207, inflating the first inflation groove 203 and causing the second airbag 7 to expand, ensuring that the second sealing sheet 701 fits tightly against the wire passing hole of the explosion-proof power distribution cabinet. According to the diameter of the cable or pipeline, gradually peel off the layers of the first sealing sheet 5 to adjust the effective sealing diameter of the sealing seat 4. Similarly, if the second sealing sheet 701 does not fit perfectly with the wire passing hole, the third sealing sheet on the second airbag 7 can also be gradually peeled off to gradually reduce the effective sealing diameter of the second airbag 7, ensuring that the first sealing cover 1 and the second sealing cover 3 fit tightly on the explosion-proof power distribution cabinet without gaps, ensuring that the second airbag 7 and the first airbag 403 expand and fit tightly against the inner wall of the wire passing hole of the explosion-proof power distribution cabinet and the wire harness, ensuring that the sealing seats 4 and the first sealing sheet 5 in the through hole 201 effectively seal the gap between the wire passing hole and the wire harness, preventing external impurities from entering.

[0054] In summary, compared with the prior art, the following beneficial effects are achieved:

[0055] This solution adopts a double - layer design of the first sealing cover 1 and the second sealing cover 3, which are respectively attached to the outer wall and the inner wall of the explosion - proof distribution cabinet. This not only enhances the sealing effect, but also, through the mobility of the second sealing cover 3, enables the sealing structure to adapt to explosion - proof distribution cabinets of different thicknesses. Especially for old electrical equipment, the openings may be deformed due to long - term use. The double - layer sealing cover design of this solution can ensure a tight fit between the sealing material and the opening by adjusting the position of the second sealing cover 3, thus solving the problem of poor sealing caused by deformation.

[0056] By adjusting the distance between the sealing seats 4 and the degree of inflation of the airbag, it is possible to further adapt to cables or pipes of different diameters, as well as the opening deformation caused by long - term use. This adjustability enables this solution to perfectly match the openings of old electrical equipment, ensuring that the sealing effect is not affected by the opening deformation.

[0057] Both the first sealing piece 5 and the third sealing piece adopt a multi - layer peelable structure, and each layer can be peeled off from the sealing seat 4 to gradually reduce the thickness of the sealing piece, thereby adjusting the effective sealing diameter of the sealing seat 4, enabling the sealing structure to adapt to cables or pipes of different diameters, and at the same time ensuring a tight fit between the sealing material and the opening, reducing gaps and irregular contacts, thus improving the sealing performance.

[0058] Through precision transmission components such as the adjusting sleeve 8, control gear 204, bevel gear, and lead screw 407, precise adjustment of the sealing seat 4 and the airbag is achieved. This solution is applicable to explosion - proof distribution cabinets and cables or pipes of various types and specifications. Whether it is a standardized opening or a deformed opening caused by long - term use, this solution can provide excellent sealing effects.

[0059] Thus, although the present invention has been described herein with reference to its specific embodiments, modifications, various changes, and substitutions are also within the above disclosure, and it should be understood that in some cases, some features of the present invention will be employed without corresponding use of other features without departing from the scope and spirit of the proposed invention. Therefore, many modifications can be made to adapt a particular environment or material to the substantial scope and spirit of the present invention.

[0060] The present invention is not intended to be limited to the specific terms used in the following claims and / or the specific embodiments disclosed as the best mode contemplated for carrying out the present invention, but the present invention will include any and all embodiments and equivalents falling within the scope of the appended claims. Thus, the scope of the present invention will be determined only by the appended claims.

Claims

1. An explosion-proof electrical modular connection sealing structure, characterized in that, Comprising: A first sealing cover (1) for fitting against the outer wall of an explosion-proof power distribution cabinet; A second sealing cover (3) disposed on one side of the first sealing cover (1) for fitting against the inner wall of the explosion-proof power distribution cabinet; A sealing connection seat (2) with one end mounted on the first sealing cover (1), the sealing connection seat (2) passing through the explosion-proof power distribution cabinet and the second sealing cover (3), and the sealing connection seat (2) being used to seal the wire passing hole on the explosion-proof power distribution cabinet; The second sealing cover (3) is arranged to move on the sealing connection seat (2) and move closer to or away from the first sealing cover (1) for adapting to explosion-proof power distribution cabinets of different thicknesses; A second airbag (7) mounted on the sealing connection seat (2), which is arranged to expand when the second sealing cover (3) moves closer to the first sealing cover (1) for fitting against the inner wall of the wire passing hole of the explosion-proof power distribution cabinet; A second sealing piece (701) mounted on the second airbag (7), the second sealing piece (701) being a multi-layer peelable structure, and each layer can be peeled off from the sealing seat (4) to gradually reduce the thickness of the second sealing piece (701); A through hole (201) penetratingly formed on the sealing connection seat (2); Two sealing seats (4) mounted in the through hole (201) and arranged symmetrically, and the two sealing seats (4) are arranged to move closer to or away from each other simultaneously for sealing the gap between the wire passing hole and the wire harness; Two first sealing pieces (5) respectively mounted on the two sealing seats (4), the first sealing piece (5) being a multi-layer peelable structure, and each layer can be peeled off from the sealing seat (4) to gradually reduce the thickness of the first sealing piece (5), thereby adjusting the effective sealing diameter of the sealing seat (4) for adapting to cables or pipes of different diameters; 2. The explosion-proof electrical modular connection sealing structure according to claim 1, wherein, The sealing connection seat (2) includes: Two control grooves (202) respectively formed on the inner walls on both sides of the through hole (201), and the two sealing seats (4) are respectively connected in the two control grooves (202); A first inflation groove (203) formed on the outer ring of the sealing connection seat (2), and the second airbag (7) is mounted in the first inflation groove (203).

3. An explosion-proof electrical modular connection sealing structure according to claim 1, characterized in that, The sealing structure further includes: An adjusting sleeve (8) sleeved on the sealing connection seat (2), and the adjusting sleeve (8) is arranged to drive the two sealing seats (4) to move closer to or away from each other simultaneously when rotating on the sealing connection seat (2); A limiting plate (6) threadedly connected to the adjusting sleeve (8), the limiting plate (6) contacting the second sealing cover (3), and the limiting plate (6) being used to drive the second sealing cover (3) to move closer to the first sealing cover (1).

4. An explosion-proof electrical modular connection and sealing structure according to claim 3, characterized in that, The adjusting sleeve (8) includes: An internal gear (802) mounted on the inner ring of the adjusting sleeve (8); The sealing connection seat (2) further includes: Two fixing grooves formed on the outer wall of the sealing connection seat (2) and arranged symmetrically; Two control gears (204) respectively mounted in the two fixing grooves; Two first bevel gears (205) respectively mounted on the two control gears (204); Two second bevel gears (206) respectively disposed in the two fixing grooves, and the second bevel gears (206) are meshed with the first bevel gears (205).

5. An explosion-proof electrical modular connection sealing structure according to claim 4, characterized in that, The sealing seat (4) includes: A second inflation groove (402) opened in the inner ring of the sealing seat (4); A first airbag (403) installed in the second inflation groove (402), and the first airbag (403) contacts the first sealing piece (5); An adjustment groove (401) opened on one side of the sealing seat (4), and an inflation hole is opened between the adjustment groove (401) and the second inflation groove (402); A moving seat (404) installed in the adjustment groove (401), one side of the moving seat (404) is connected with a second piston (405), and the second piston (405) is arranged in the inflation hole; A second elastic member (406) with one end installed on the moving seat (404) and the other end installed on the inner wall of the adjustment groove (401); A lead screw (407) with one end connected to the moving seat (404) and the other end passing through the control groove (202) and extending into the fixed groove to be connected with the second bevel gear (206).

6. The explosion-proof electrical modular connection sealing structure according to claim 1, characterized in that, The adjusting sleeve (8) further includes: A bearing (801) installed between the adjusting sleeve (8) and the sealing connection seat (2).

7. The explosion-proof electrical modular connection sealing structure according to claim 2, characterized in that, The sealing connection seat (2) further includes: A groove (207) opened on the inner wall of the first inflation groove (203); A first piston (208) installed in the groove (207); A first elastic member (210) with one end connected to the first piston (208) and the other end connected to the inner wall of the groove (207); A moving hole opened on the inner wall of the groove (207); A control rod (209) arranged in the moving hole, one end of the control rod (209) is connected to the first piston (208) and the other end contacts the second sealing cover (3).

8. An explosion-proof electrical modular connection and sealing structure according to claim 1, characterized in that, The second airbag (7) includes: A plurality of peelable third sealing pieces, and each layer of the third sealing pieces can be peeled off from the second airbag (7) to gradually reduce the effective sealing diameter of the second airbag (7).

9. The explosion-proof electrical modular connection sealing structure according to claim 1, characterized in that, The first sealing cover (1) includes: A first sealing ring (101) installed on one side of the first sealing cover (1), and the first sealing ring (101) fits against the outer wall of the explosion-proof power distribution cabinet.

10. The explosion-proof electrical modular connection sealing structure according to claim 1, characterized in that, The second sealing cover (3) includes: A second sealing ring (301) installed on one side of the second sealing cover (3), and the second sealing ring (301) fits against the inner wall of the explosion-proof power distribution cabinet.

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