Modular splicing structure fire-retardant heat-insulating fire-fighting suit

Abstract

This invention discloses a modular, splicable flame-retardant and heat-insulating fire suit, belonging to the field of protective equipment technology. It includes a one-piece suit, a hood, gloves, heat-insulating foot covers, and straps on the hood. The one-piece suit has sleeve openings and leg openings. Sleeves are detachably installed at the sleeve openings, and trouser legs are detachably installed at the leg openings. A sealing component is provided inside each sleeve opening, comprising a heat-insulating sleeve and a ring spring. The ring spring presses the heat-insulating sleeve tightly against the outer wall of the sleeve. This invention, by creating sleeve and leg openings on the one-piece suit body, combined with the independent detachable splicing method for the sleeves and trouser legs, allows for the rapid replacement of certain parts of the fire suit. When vulnerable areas such as the knees and elbows experience wear or the heat insulation layer fails, only the corresponding sleeve or trouser leg needs to be replaced, eliminating the need to scrap the entire suit. This significantly reduces maintenance costs and extends the overall service life of the suit.

Description

Technical Field

[0001] This invention relates to a flame-retardant and heat-insulating fire suit, and more particularly to a modular and splicable flame-retardant and heat-insulating fire suit, belonging to the field of protective equipment technology. Background Technology

[0002] Flame-retardant and heat-insulating fire suits are core protective equipment to ensure the personal safety of firefighters in fire rescue scenarios. At present, the mainstream products are divided into two types: one-piece and two-piece. Among them, two-piece products are more widely used because they are convenient to wear and can be adapted to different body types.

[0003] While existing two-piece flame-retardant and heat-insulating fire suits consist of separate components such as a top, trousers, hood, gloves, and booties, making them convenient to wear, the knee and elbow areas are extremely prone to wear and tear during rescue operations. Once a section is worn through or the insulation layer fails, the damaged sleeves or trouser legs cannot be replaced individually; the entire top or trousers must be replaced, resulting in high usage costs. Furthermore, since the top and sleeves are a single piece, when firefighters raise their arms, the sleeves pull the hem upwards, creating a protective gap at the waistband. This allows high-temperature heat to easily penetrate the waist, abdomen, and upper thighs, and the tight hem restricts the torso, reducing operational flexibility and efficiency.

[0004] To address these issues, a modular, connectable, flame-retardant, and heat-insulating fire suit was designed. Summary of the Invention

[0005] The main objective of this invention is to provide a modular, splicable flame-retardant and heat-insulating fire suit to solve the problems mentioned in the background art.

[0006] The objective of this invention can be achieved by adopting the following technical solution: A modular, splicable flame-retardant and heat-insulating fire suit includes a bodysuit, a hood, gloves, heat-insulating foot covers, and straps on the hood. The bodysuit has sleeve openings and leg openings. Sleeves are detachably installed at the sleeve openings, and trouser legs are detachably installed at the leg openings. A sealing assembly is provided on the inner side of the sleeve opening. The sealing assembly includes a heat insulation sleeve and a ring spring. The ring spring is used to press the heat insulation sleeve tightly against the outer wall of the sleeve tube. The two sets of sleeves are connected to each other by an upper connector, and the two sets of trouser legs are connected to each other by a lower connector. The sleeve and the trouser leg are connected by a lifting assembly.

[0007] Preferably, the front placket of the bodysuit extends to below the abdomen, and the front placket of the bodysuit is provided with a first Velcro closure and a buckle for closing the placket.

[0008] The extended placket makes it easy to put on, and the double locking structure can completely cover the abdominal area, preventing the placket from coming undone during rescue and creating a protective gap, thus improving the heat insulation and airtightness of the chest and abdomen.

[0009] Preferably, the upper connector includes an elastic band and a fourth Velcro fastener. The elastic band is disposed on both sets of the sleeves, and the fourth Velcro fastener is disposed on both sets of the sleeves. The fourth Velcro fasteners on the elastic band are mutually attached and engaged.

[0010] The elastic band has a pre-extension allowance to adapt to different firefighter body shapes, while restraining the sleeves on both sides to prevent unilateral shift. It can be installed and removed using Velcro, making the operation simple and quick.

[0011] Preferably, the lower connector includes a connecting strap and a snap fastener. The connecting strap is disposed on two sets of the trouser legs, and the snap fasteners are disposed on two sets of the trouser legs respectively. The snap fasteners on the connecting strap engage with each other.

[0012] The snap fasteners can quickly secure the two pant legs, effectively preventing them from slipping outwards when firefighters run or squat, ensuring that the lower limb protective layer fits the body completely.

[0013] Preferably, the lifting assembly includes an upper sling, a hook, a lower sling, and a lifting ring, with one end of the upper sling connected to the sleeve and the other end provided with the hook; One end of the lower strap is connected to the trouser leg, and the other end is provided with the hanging ring; The hook is detachably connected to the lifting ring.

[0014] The lifting assembly enables vertical connection between the sleeves and trouser legs, facilitating complete donning. It prevents the hem of the bodysuit from shifting upwards during arm-raising operations, eliminating gaps where high temperatures can penetrate the waist and abdomen. The separate design of the hooks and lifting rings allows for individual replacement of damaged modules.

[0015] Preferably, the sealing assembly further includes a restraining cavity, the heat insulation sleeve is disposed on the inner wall of the sleeve hole, the restraining cavity is located on the outer periphery of the heat insulation sleeve, and the annular spring is embedded in the restraining cavity.

[0016] The ring spring continuously presses inward to automatically fit the heat insulation sleeve against the outer wall of the sleeve, sealing the seams of the sleeve openings, preventing high-temperature smoke from penetrating inward, and improving the airtightness of the entire garment.

[0017] Preferably, a support ring is provided at the upper end of the sleeve, the position of which corresponds to the position of the annular spring, and is used to bear the radial pressure of the annular spring to reduce the pressure on the arm.

[0018] The support ring disperses the clamping force of the ring spring, preventing the spring from directly squeezing the skin of the arm. This ensures that there is no pressure or soreness during long-term firefighting operations, while also balancing sealing performance and wearing comfort.

[0019] Preferably, an annular cover is provided at the bottom of the outer side of the sleeve, and the annular cover covers the outside of the wearing gap between the sleeve and the glove.

[0020] A circular tarpaulin covers the seam between the wrist joints, preventing sparks and high-temperature airflow from penetrating the vulnerable area of ​​the wrist and reinforcing the flame-retardant and heat-insulating protection capabilities of the hand joint.

[0021] Preferably, an anti-slip element is provided between the sleeve tube and the armhole. The anti-slip element includes a first anti-slip ring and a second anti-slip ring. The first anti-slip ring is fixed to the outside of the armhole, and the second anti-slip ring is fixed to the top of the sleeve tube to prevent the sleeve tube from sliding out of the armhole.

[0022] Two sets of anti-slip rings mutually limit and block each other, preventing the sleeve from slipping off and failing when the arm is raised and pulled significantly, thus ensuring continuous and complete upper limb protection.

[0023] Preferably, a second Velcro fastener is provided on the inner side of the leg opening, and a third Velcro fastener is provided on the outer side of the top of the trouser leg to cooperate with the second Velcro fastener. The second Velcro fastener and the third Velcro fastener are adhered to each other to fix the trouser leg and seal the leg opening.

[0024] The double-layer Velcro fastening structure not only locks the trouser legs to prevent them from slipping down when stepping, but also seals the gaps in the leg openings, preventing high temperatures from seeping into the body from the leg seams.

[0025] The beneficial effects of this invention are as follows: This invention provides a modular, splicable flame-retardant and heat-insulating fire suit. By opening sleeve and leg openings in the body of the one-piece suit, and combining the independent detachable splicing method of the sleeves and trouser legs, it is possible to quickly replace local parts of the fire suit. When vulnerable areas such as the knees and elbows are worn or the heat insulation layer fails, only the corresponding sleeve or trouser leg needs to be replaced, without scrapping the whole suit, which greatly reduces the cost of use and maintenance and extends the service life of the whole suit. In addition, the two sets of sleeves are connected by elastic bands and fourth Velcro to form an upper connector, and the two sets of trouser legs are connected by connecting straps and snaps to form a lower connector. Combined with the lifting assembly consisting of upper slings, hooks, lower slings and lifting rings, the sleeves and trouser legs can be connected as one unit, which not only ensures the flexibility of independent disassembly and assembly of each module, but also makes it easy to wear. By incorporating a sealing assembly consisting of a heat-insulating sleeve, a restraining cavity, and a ring spring inside the sleeve opening, the ring spring, relying on its own elasticity, drives the heat-insulating sleeve to evenly conform to the outer wall of the sleeve after the wearer's arm passes through the sleeve opening, achieving an automatic conformal seal. This effectively prevents high-temperature smoke from intruding along the gaps in the sleeve opening, improving the overall airtightness of the protection. Furthermore, a support ring is installed at the upper end of the sleeve. When the ring spring applies radial pressure, the support ring can disperse and support the pressure, preventing spring compression and improving comfort. In addition, the sleeve and the bodysuit are connected flexibly, allowing the sleeve to move independently when the arm is raised, without pulling the hem of the bodysuit up. At the same time, the trouser legs provide a limiting constraint on the bottom of the bodysuit, eliminating the protective gaps in the waist and abdomen area created by traditional two-piece fire suits. This ensures that the torso is continuously and completely covered, improving freedom of movement while preventing high-temperature heat from intruding into the waist, abdomen, and upper thigh areas. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the exploded structure of the present invention; Figure 2 This is a schematic diagram of the overall front view of the present invention; Figure 3 This is a schematic diagram showing the connection state between the sleeve and the trouser leg of the present invention; Figure 4 This is a schematic diagram of the interior of the bodysuit of the present invention; Figure 5 This is a schematic diagram of the external structure of the sleeve of the present invention; Figure 6 This is a schematic cross-sectional view of the sleeve structure of the present invention; Figure 7 This is a schematic diagram of the external structure of the trouser leg of the present invention; Figure 8 This is a schematic diagram of the sealing assembly structure of the present invention; Figure 9 This is a schematic diagram showing the position of the sealing component after the sleeve is worn according to the present invention.

[0027] In the picture: 1. Bodysuit; 101. First Velcro closure; 102. Buckle; 103. First anti-slip ring; 104. Second Velcro closure; 2. Headgear; 201. Straps; 3. Gloves; 4. Insulated foot covers; 5. Armholes; 6. Leg openings; 7. Sleeve; 701. Circular cover; 702. Second anti-slip ring; 703. Support ring; 8. Trouser legs; 801. Third Velcro fastener; 9. Elastic band; 10. Fourth Velcro strap; 11. Connecting strap; 12. Snap fastener; 13. Lifting components; 1301. Upper sling; 1302. Hook; 1303. Lower sling; 1304. Lifting ring; 14. Sealing assembly; 1401. Heat insulation sleeve; 1402. Restraint cavity; 1403. Annular spring. Detailed Implementation

[0028] To enable those skilled in the art to more clearly understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the embodiments and accompanying drawings, but the embodiments of the present invention are not limited thereto.

[0029] Example 1: As Figures 1-9 As shown, this embodiment provides a modular and splicable flame-retardant and heat-insulating fire suit, including a bodysuit 1, a headgear 2, gloves 3, heat-insulating foot covers 4, and straps 201 on the headgear 2. The bodysuit 1 has sleeve holes 5 and leg holes 6 respectively. Sleeves 7 can be detachably installed at the sleeve holes 5, and trouser legs 8 can be detachably installed at the leg holes 6. A sealing assembly 14 is provided on the inner side of the armhole 5. The sealing assembly 14 includes a heat insulation sleeve 1401 and an annular spring 1403. The annular spring 1403 is used to press the heat insulation sleeve 1401 against the outer wall of the sleeve tube 7. The two sets of sleeves 7 are connected to each other by an upper connector, and the two sets of trouser legs 8 are connected to each other by a lower connector; The sleeve 7 and the trouser leg 8 are connected by a lifting assembly 13.

[0030] When wearing the garment, the user first connects the sleeves 7 and trouser legs 8 together using the upper connector, lower connector, and lifting assembly 13, then puts it on. Next, the user opens the placket of the bodysuit 1 and puts it on, first assembling the trouser legs 8 to the leg openings 6 of the bodysuit 1, and then assembling the sleeves 7 to the armholes 5 of the bodysuit 1. The lower connector between the trouser legs 8 limits the position of the trouser legs 8 at the crotch area of ​​the bodysuit 1. The sealing assembly 14 inside the armholes 5 provides additional support. The inner ring spring 1403 compresses the heat insulation sleeve 1401 and holds the outer wall of the sleeve tube 7 to achieve a seal at the sleeve hole 5. Finally, the head cover 2, gloves 3, and heat insulation foot cover 4 are put on. The arms pass through the straps 201 on both sides of the head cover 2 to limit the head cover 2 and make the head cover 2 fit the head tightly. During the operation, the sleeve tube 7 can move independently and will not pull the bodysuit 1 to shift. When the elbow or knee is damaged, the sleeve tube 7 or trouser leg 8 can be disassembled and replaced separately without replacing the entire bodysuit 1, reducing the cost of use.

[0031] The fire-fighting suit fabric includes heat-insulating suit fabric, aramid spunlace felt, and aramid flame-retardant viscose blend fabric. In terms of the outer layer performance of the heat-insulating fire-fighting suit fabric, there was no melting or dripping phenomenon during the flame retardant performance test. In terms of tear resistance, the radial test result was 1250N and the weft test result was 1201N, which is higher than the standard clause. In terms of thermal stability, the warp and weft dimensional change rate was 1%, which meets the standard requirements. The performance of the fabric insulation layer was tested. In terms of flame retardancy, the radial damage length was 16mm and the weft damage length was 14mm. In terms of thermal stability, the warp and weft variation rate was 1%, which also met the standard requirements. Regarding the performance of the fabric comfort layer, in terms of flame retardancy, the radial damage length was 36mm and the weft damage length was 38mm. In terms of tear strength, the radial test result was 335.9N and the weft test result was 348.4N, which meets the standard requirements. In terms of overall performance, the test results for flame and radiant heat protection performance are 31.6 cal / cm², and the test results for the outer layer seam breaking strength are 1024 N in the radial direction and 962.6 N in the latitudinal direction, which meet the standard requirements.

[0032] Example 2: The solution in Example 1 will be further described below with reference to its specific working method. See the description below for details: In this embodiment, the front placket of the bodysuit 1 extends to the lower abdomen, and the front placket of the bodysuit 1 is provided with a first Velcro 101 and a buckle 102 for closing the placket.

[0033] The jumpsuit's front extends downwards to below the abdomen. After wearing it, the front is gathered inwards. First, the front is initially fitted and fixed by the first Velcro 101, and then the buckle 102 is fastened for double locking. The extended front completely covers the abdominal area, making it very convenient to wear after opening.

[0034] In this embodiment, the upper connector includes an elastic band 9 and a fourth Velcro 10. The elastic band 9 is disposed on the two sets of sleeves 7, and the fourth Velcro 10 is disposed on the two sets of sleeves 7. The fourth Velcro 10 on the elastic band 9 are mutually attached and engaged.

[0035] The elastic band 9 has a margin of elasticity, so it will not restrict arm movement when raising the arm and can adapt to different body shapes. At the same time, it prevents the sleeve 7 from shifting or loosening on one side, keeping the double arm protection structure stable. It is fixed with the fourth Velcro 10, making disassembly and removal more convenient.

[0036] In this embodiment, the lower connector includes a connecting strap 11 and a snap fastener 12. The connecting strap 11 is disposed on two sets of trouser legs 8, and the snap fasteners 12 are disposed on two sets of trouser legs 8 respectively. The snap fasteners 12 on the connecting strap 11 are engaged with each other.

[0037] When assembling the trouser legs 8, the connecting straps 11 on both sides are joined together so that the snap fasteners 12 are fastened and locked together, realizing the integrated positioning of the left and right trouser legs 8; the lower connecting piece is stuck at the end of the bodysuit 1, which can prevent the trouser legs 8 from slipping outward when the firefighter bends over, steps, or runs, ensuring that the heat insulation protective layer of the legs completely covers the lower limbs of the human body.

[0038] In this embodiment, the hoisting assembly 13 includes an upper sling 1301, a hook 1302, a lower sling 1303, and a lifting ring 1304. One end of the upper sling 1301 is connected to the sleeve 7, and the other end is provided with a hook 1302. One end of the lower strap 1303 is connected to the trouser leg 8, and the other end is provided with a hanging ring 1304; Hook 1302 and ring 1304 are detachably connected.

[0039] Hook 1302 into the hanging ring 1304 to complete the vertical connection between the sleeve 7 and the trouser leg 8; the length of the suspender is adjustable, and the suspender will not pull on the trouser leg 8 during arm movement, causing the garment connection to loosen. When replacing parts, simply separate the hook 1302 and the hanging ring 1304, making disassembly and assembly convenient.

[0040] In this embodiment, the sealing assembly 14 further includes a restraint cavity 1402, the heat insulation sleeve 1401 is disposed on the inner wall of the sleeve hole 5, the restraint cavity 1402 is located on the outer periphery of the heat insulation sleeve 1401, and the annular spring 1403 is embedded in the restraint cavity 1402.

[0041] After the sleeve tube 7 is inserted into the armhole 5, the ring spring 1403 contracts inward due to its own elasticity, causing the heat insulation sleeve 1401 to tightly wrap around the outer wall of the sleeve tube 7, automatically adapting to the outer diameter of the sleeve tube 7, sealing the seam of the armhole 5, and the heat insulation sleeve 1401 simultaneously blocks high temperature and smoke from penetrating inward, improving the airtightness of the garment.

[0042] In this embodiment, a support ring 703 is provided at the upper end of the sleeve 7. The position of the support ring 703 corresponds to the position of the annular spring 1403, and is used to bear the radial pressure of the annular spring 1403 to reduce the pressure on the arm.

[0043] When the ring spring 1403 applies radial compression force inward, the support ring 703 bears and disperses the pressure, preventing the ring spring 1403 from directly squeezing the firefighter's arm skin. This ensures that there will be no discomfort from pressure during long-term rescue operations, balancing sealing effect and wearing comfort.

[0044] In this embodiment, an annular cover 701 is provided at the bottom of the outer side of the sleeve 7, and the annular cover 701 covers the outside of the wearing gap between the sleeve 7 and the glove 3.

[0045] After wearing gloves 3, the circular cover 701 hangs down naturally, completely covering the seam between the cuff of sleeve 7 and the wrist of gloves 3, preventing sparks and hot air from entering from the wrist gap and reinforcing the weak protective area of ​​the wrist.

[0046] In this embodiment, an anti-slip element is provided between the sleeve tube 7 and the armhole 5. The anti-slip element includes a first anti-slip ring 103 and a second anti-slip ring 702. The first anti-slip ring 103 is fixed to the outside of the armhole 5, and the second anti-slip ring 702 is fixed to the top of the sleeve tube 7 to prevent the sleeve tube 7 from sliding out of the inside of the armhole 5.

[0047] After the sleeve 7 is fully inserted into the sleeve hole 5, the first anti-slip ring 103 and the second anti-slip ring 702 form a mutual limiting structure; when the arm is raised or pulled by a large amount, the two sets of anti-slip rings abut against each other, restricting the sleeve 7 from sliding out of the sleeve hole 5, and preventing the upper limb protection from failing under high-intensity rescue.

[0048] In this embodiment, a second Velcro 104 is provided on the inner side of the leg hole 6, and a third Velcro 801 that cooperates with the second Velcro 104 is provided on the outer side of the top of the trouser leg 8. The second Velcro 104 and the third Velcro 801 are bonded to each other to fix the trouser leg 8 and seal the leg hole 6.

[0049] The second Velcro 104 is sewn inside the leg hole 6, and the third Velcro 801 is sewn on the outer top of the trouser leg 8. After the trouser leg 8 is inserted into the leg hole 6 from the inside, the second Velcro 104 and the third Velcro 801 are adhered to each other over a large area. On the one hand, the trouser leg 8 is firmly fixed at the leg hole 6 to prevent the trouser leg 8 from slipping down when squatting or stepping. On the other hand, the assembly gap between the leg hole 6 and the trouser leg 8 is sealed to prevent high temperature from entering the human body from the leg joint.

[0050] The solutions in Embodiment 1 and Embodiment 2 will be further described below with reference to their specific working methods. During the preparation stage, first take out two sets of sleeves 7 and two sets of trouser legs 8. Connect the two sleeves 7 together using the upper connector consisting of elastic bands 9 and fourth Velcro 10. Then, fix the two trouser legs 8 with the lower connector consisting of connecting straps 11 and snap fasteners 12. Next, hook the hook 1302 at the end of the upper strap 1301 below the sleeve 7 to the hanging ring 1304 at the end of the lower strap 1303 above the trouser legs 8. Use the lifting assembly 13 to complete the vertical linkage between the sleeves 7 and trouser legs 8, so that the sleeves 7 and trouser legs 8 are pre-assembled into a whole limb. First, put the assembled sleeves 7 and trouser legs 8 on the body's limbs. Then, open the front placket of the bodysuit 1 extending to below the abdomen, loosen the first Velcro 101 and the buckle 102 to create space for wearing. Insert the body's legs into the bodysuit 1, and then fit the pre-worn trouser legs 8 into the corresponding leg openings 6 of the bodysuit 1. Ensure that the third Velcro 801 on the outside of the trouser legs 8 is tightly attached to the second Velcro 104 on the inside of the leg openings 6, thus securing the trouser legs 8 and sealing the leg joints. The lower connector is then fully secured within the bodysuit. 1. At the crotch, restrict the lateral slippage of the trouser leg 8; then, insert the arm and outer sleeve 7 into the armhole 5 of the bodysuit 1. The first anti-slip ring 103 on the outer side of the armhole 5 and the second anti-slip ring 702 at the top of the sleeve 7 interlock and limit each other, preventing the sleeve 7 from slipping outward. The annular spring 1403 in the restraining cavity 1402 inside the armhole 5 continuously tightens and compresses the heat insulation sleeve 1401, allowing the heat insulation sleeve 1401 to fit snugly and wrap around the outer wall of the sleeve 7, sealing the gap in the armhole 5. The upper support ring 703 of the sleeve 7 bears the radial pressure of the annular spring 1403, relieving the pressure on the armhole 7. The arms feel pressured and uncomfortable; after the limbs are assembled with the bodysuit 1, the front of the bodysuit 1 is pulled inward, the first Velcro 101 is attached to complete the initial fixation, and then the buckle 102 is fastened to achieve double-layer sealing protection for the abdomen; the head is covered with a hood 2, the arms are passed through the straps 201 on both sides of the hood 2 and pulled tight so that the hood 2 fits tightly to the head to complete the head protection; the hands are covered with gloves 3, and the bottom of the sleeve 7 is covered with a circular cover 701 to cover the gap at the wrist of the sleeve 7 and the gloves 3; finally, the heat-insulating foot covers 4 are put on, and the complete set of protective equipment is assembled.

[0051] During fire scene operations, when firefighters raise their arms, bend over, step, or climb, the sleeves 7 can move independently. The length of the slings inside the hoisting assembly 13 is adjustable, so even if the sleeves 7 move, they will not interfere with the trouser legs 8, preventing the traditional fire suit from shifting up when raising the arms and allowing high-temperature heat to enter through the waist and abdomen gaps. The upper connecting elastic band 9 has a stretch margin to adapt to different body types and does not restrict arm movement. The lower connecting snap 12 continuously restrains the trouser legs 8 to prevent them from shifting or slipping. The sealing assembly 14, Velcro fastening structure, and ring-shaped cover 701 seal all seams, isolating the high temperature, sparks, and toxic fumes in the fire scene, and providing comprehensive protection for the firefighter's torso, limbs, and head.

[0052] During equipment maintenance and replacement, if the elbow sleeves 7 and knee trouser legs 8 show wear or the insulation layer is damaged, it is not necessary to replace the entire bodysuit 1. Simply unfasten the buckles 102, tear off the various Velcro straps, separate the hooks 1302 and lifting rings 1304 of the hoisting component 13, and remove the damaged sleeves 7 or trouser legs 8 to replace them with new modules. The rest of the bodysuit 1, headgear 2, gloves 3, and heat-insulating foot covers 4 can continue to be used, effectively extending the service life of the bodysuit 1 and reducing equipment procurement and maintenance costs.

[0053] The above description is merely a further embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope disclosed in the present invention, based on the technical solution and concept of the present invention, shall fall within the scope of protection of the present invention.

Claims

1. A modular, splicable flame-retardant and heat-insulating fire suit, comprising a bodysuit (1), a hood (2), gloves (3), heat-insulating foot covers (4), and straps (201) on the hood (2), characterized in that: The bodysuit (1) has sleeve holes (5) and leg holes (6) respectively. Sleeve tubes (7) are detachably installed at the sleeve holes (5), and trouser legs (8) are detachably installed at the leg holes (6). A sealing assembly (14) is provided on the inner side of the sleeve hole (5). The sealing assembly (14) includes a heat insulation sleeve (1401) and a ring spring (1403). The ring spring (1403) is used to press the heat insulation sleeve (1401) against the outer wall of the sleeve tube (7). The two sets of sleeves (7) are connected to each other by an upper connector, and the two sets of trouser legs (8) are connected to each other by a lower connector; The sleeve (7) and the trouser leg (8) are connected by a hoisting assembly (13).

2. The modular, splicable flame-retardant and heat-insulating fire suit according to claim 1, characterized in that: The front placket of the bodysuit (1) extends to the lower abdomen. The front placket of the bodysuit (1) is provided with a first Velcro (101) and a buckle (102) for closing the placket.

3. The modular, splicable flame-retardant and heat-insulating fire suit according to claim 1, characterized in that: The upper connector includes an elastic band (9) and a fourth Velcro (10). The elastic band (9) is disposed on the two sets of sleeves (7), and the fourth Velcro (10) is disposed on the two sets of sleeves (7). The fourth Velcro (10) on the elastic band (9) are attached to each other.

4. The modular, splicable flame-retardant and heat-insulating fire suit according to claim 1, characterized in that: The lower connector includes a connecting strap (11) and a snap fastener (12). The connecting strap (11) is disposed on two sets of the trouser legs (8), and the snap fastener (12) is disposed on two sets of the trouser legs (8). The snap fasteners (12) on the connecting strap (11) are engaged with each other.

5. The modular, splicable flame-retardant and heat-insulating fire suit according to claim 1, characterized in that: The hoisting assembly (13) includes an upper sling (1301), a hook (1302), a lower sling (1303), and a lifting ring (1304). One end of the upper sling (1301) is connected to the sleeve (7), and the other end is provided with the hook (1302). One end of the lower strap (1303) is connected to the trouser leg (8), and the other end is provided with the hanging ring (1304). The hook (1302) and the lifting ring (1304) are detachably connected.

6. The modular, splicable flame-retardant and heat-insulating fire suit according to claim 1, characterized in that: The sealing assembly (14) further includes a binding cavity (1402), the heat insulation sleeve (1401) is disposed on the inner wall of the sleeve hole (5), the binding cavity (1402) is located on the outer periphery of the heat insulation sleeve (1401), and the annular spring (1403) is embedded in the binding cavity (1402).

7. The modular, splicable flame-retardant and heat-insulating fire suit according to claim 1, characterized in that: The upper end of the sleeve (7) is provided with a support ring (703), the position of which corresponds to the position of the annular spring (1403), and is used to bear the radial pressure of the annular spring (1403) to reduce the pressure on the arm.

8. The modular, splicable flame-retardant and heat-insulating fire suit according to claim 1, characterized in that: A ring-shaped cover (701) is provided at the bottom of the outer side of the sleeve (7), and the ring-shaped cover (701) covers the outside of the wearing gap between the sleeve (7) and the glove (3).

9. The modular, splicable flame-retardant and heat-insulating fire suit according to claim 1, characterized in that: An anti-slip element is provided between the sleeve tube (7) and the armhole (5). The anti-slip element includes a first anti-slip ring (103) and a second anti-slip ring (702). The first anti-slip ring (103) is fixed to the outside of the armhole (5), and the second anti-slip ring (702) is fixed to the top of the sleeve tube (7) to prevent the sleeve tube (7) from sliding out of the armhole (5).

10. A modular, splicable flame-retardant and heat-insulating fire suit according to claim 1, characterized in that: The inner side of the leg hole (6) is provided with a second Velcro (104), and the outer side of the top of the trouser leg (8) is provided with a third Velcro (801) that cooperates with the second Velcro (104). The second Velcro (104) and the third Velcro (801) are bonded to each other to fix the trouser leg (8) and seal the leg hole (6).

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