Quick buckle type splicing device for coal mine air duct

Abstract

The utility model discloses a quick buckle type splicing device for a coal mine air duct, which relates to the technical field of coal mine ventilation equipment and comprises a female buckle hoop ring and a male buckle hoop ring which are matched and connected with two sections of air ducts, the bracket ring fixer is used for being buckled on an air duct bracket ring of the air duct so as to fix the female buckle hoop ring on one section of the air duct; four arc-shaped clamping strips are connected to the back face of a hoop support of the male buckle hoop in an integrally-formed mode, and the specifications of the arc-shaped clamping strips are matched with the specifications of clamping grooves of the arc-shaped clamping bases. After the female buckle hoop and the male buckle hoop are respectively buckled and fixed with the corresponding air duct bracket rings, the male buckle hoop is buckled and assembled into the arc-shaped clamping seat of the female buckle hoop through the arc-shaped clamping strip, so that the splicing of the two sections of air ducts is realized. Compared with the prior art, the device has the advantages that the device is quick and convenient; the stability is high; the sealing performance is good; the application range is wide.

Description

Technical Field

[0001] This utility model relates to the technical field of coal mine ventilation equipment, specifically to a quick-connect snap-fit ​​splicing device for coal mine ventilation ducts. Background Technology

[0002] In coal mining, ventilation is a crucial aspect of ensuring worker safety and production efficiency. As a major component of the ventilation system, the connection method and stability of the ventilation duct directly affect the ventilation effect. Traditional ventilation duct connection methods often use bolts or wire binding, which are cumbersome, time-consuming, and lack stability. Especially in emergency situations, it's difficult to quickly reconnect the ventilation duct, thus impacting ventilation efficiency.

[0003] In recent years, with the continuous development of coal mine ventilation technology, some new ventilation duct connection methods have emerged, such as a flexible ventilation duct connection device for mines with patent number CN108005704A. This device achieves quick connection of ventilation ducts through buckles and locking mechanisms, but it still has some shortcomings in practical applications. For example, the buckle structure of this device is relatively complex, and installation and disassembly still require a certain amount of time; at the same time, its sealing performance needs to be improved, making it difficult to meet the strict sealing requirements of coal mine ventilation systems.

[0004] In view of the problems existing in the prior art, this utility model proposes a quick snap-on splicing device for coal mine ventilation ducts, which aims to achieve quick, convenient and stable splicing of ventilation ducts, improve ventilation efficiency, reduce operation difficulty and have good sealing performance. Utility Model Content

[0005] The purpose of this utility model is to provide a quick-clamping connection device for coal mine ventilation ducts, so as to solve the problems of cumbersome operation, insufficient stability and poor sealing performance of the existing ventilation duct connection methods.

[0006] To solve the above-mentioned technical problems, the technical solution provided by this utility model is as follows: a quick-connect snap-fit ​​splicing device for coal mine ventilation ducts, including a female snap-fit ​​ring and a male snap-fit ​​ring for connecting two sections of ventilation ducts. The female snap-fit ​​ring consists of a support ring retainer and a ring support. Four support ring retainers are welded onto the ring support. The support ring retainers are used to fasten onto the ventilation duct support rings that are already attached to the ventilation duct to fix the female snap-fit ​​ring on one section of the ventilation duct. Each support ring retainer consists of a snap-fit ​​half-tube one, a snap-fit ​​half-tube two, and a hinge. The device consists of a chain, an arc-shaped bracket, bolts, and bolt seats. The second snap-fit ​​half-cylinder is welded to the front of the hoop bracket. The second snap-fit ​​half-cylinder is rotatably connected to the first snap-fit ​​half-cylinder via a hinge. The first snap-fit ​​half-cylinder rotates around the second snap-fit ​​half-cylinder via a hinge to achieve the opening and closing function. The bottoms of both the first and second snap-fit ​​half-cylinders are integrally formed and connected to bolt seats of the same specification. The threaded hole specifications of the bolt seats are compatible and they are fixed by matching bolts. The back of the hoop bracket is integrally formed and connected to four arc-shaped brackets, each with a slot.

[0007] The male clamp ring consists of a bracket ring retainer and a clamp ring bracket. Four bracket ring retainers are welded to the clamp ring bracket. These retainers are used to fasten the male clamp ring onto the existing air duct bracket ring to secure it to another section of the air duct. Each bracket ring retainer consists of a first fastening half-cylinder, a second fastening half-cylinder, a hinge, an arc-shaped retaining strip, a bolt, and a bolt seat. The second fastening half-cylinder is welded to the front of the clamp ring bracket. The second fastening half-cylinder is rotatably connected to the first fastening half-cylinder via a hinge. The first fastening half-cylinder is wound around the second fastening half-cylinder via a hinge. The rotation enables the opening and closing function. The bottoms of both the first and second half-cylinders are integrally formed with bolt seats of the same specifications. The threaded holes of the bolt seats are compatible and fixed by matching bolts. The back of the hoop bracket is integrally formed with four arc-shaped locking strips, the specifications of which are compatible with the slot specifications of the arc-shaped locking seats. After the female and male hoop rings are fastened and fixed to the corresponding duct bracket rings, the male hoop ring is assembled into the arc-shaped locking seat of the female hoop ring through the arc-shaped locking strips, realizing the connection of the two duct sections.

[0008] Furthermore, the duct support ring at the end of the duct is placed inside the second snap-fit ​​half-tube. The first snap-fit ​​half-tube is hinged and snapped onto the second snap-fit ​​half-tube, fixing the duct support ring inside the formed cylindrical structure. The threaded holes of the two bolt seats at the bottom of the first and second snap-fit ​​half-tubes are aligned. The bolts matching the threaded holes pass through the bolt seats of the first snap-fit ​​half-tube and are installed into the bolt seats of the second snap-fit ​​half-tube, thus achieving the limiting and fixing of the support ring retainer on the duct support ring.

[0009] Furthermore, sealing tape is wrapped between the female and male clamping rings. The sealing tape is used to seal the connection gap to improve the connection and sealing of the two sections of the duct.

[0010] Compared with the prior art, the advantages of this utility model are: (1) Fast and convenient: The fastening half-tube one and fastening half-tube two are connected by hinges, and the cooperation of the arc-shaped clip and the arc-shaped card seat realizes the fast and convenient connection of the air duct, reduces the difficulty of operation and improves the work efficiency; (2) Strong stability: The bracket ring fixer is fixed on the air duct bracket ring by bolts, and the bottom of the fastening half-tube one and fastening half-tube two are provided with bolt seats, which further enhances the stability of the connection and avoids poor ventilation effect or safety accidents caused by unstable connection; (3) Good sealing performance: The sealing tape wrapped between the female buckle ring and the male buckle ring effectively seals the connection gap, improves the connection sealing of the two sections of the air duct, and meets the strict requirements of the coal mine ventilation system for sealing; (4) Wide range of applications: This utility model is applicable to the connection of air ducts of various specifications, and the structure is simple, easy to manufacture and maintain, and reduces the cost of use. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the structure of this utility model.

[0012] Figure 2 This is a structural diagram in its usage state.

[0013] Figure 3 This is a side view of the female buckle ring.

[0014] Figure 4 This is a schematic diagram of the enlarged region A.

[0015] Figure 5 This is a structural diagram of the magnified region B.

[0016] Figure 6 This is a schematic diagram of the front structure of the female buckle ring.

[0017] Figure 7 This is a schematic diagram of the enlarged region C.

[0018] Figure 8 This is a schematic diagram of the back structure of the female buckle ring.

[0019] Figure 9 This is a schematic diagram of the enlarged region D.

[0020] Figure 10 This is a side view diagram of the male buckle ring.

[0021] Figure 11 This is a schematic diagram of the structure of the magnified region E.

[0022] Figure 12 This is a schematic diagram of the back structure of the male buckle ring.

[0023] Figure 13 This is a schematic diagram of the enlarged region F.

[0024] Figure 14 This is a connection diagram of the bracket ring retainer.

[0025] As shown in the figure: 1. Female buckle ring, 1-1. Bracket ring retainer, 1-1-1. Snap-on half cylinder one, 1-1-2. Snap-on half cylinder two, 1-1-3. Hinge, 1-1-4. Arc-shaped bracket, 1-1-5. Bolt, 1-1-6. Bolt seat, 1-2. Buckle ring bracket, 2. Male buckle ring, 2-1. Arc-shaped clip, 3. Sealing tape, 4. Air duct, 5. Air duct bracket ring. Detailed Implementation

[0026] The present invention will now be described in further detail with reference to the accompanying drawings.

[0027] Example 1

[0028] like Figures 1 to 14 As shown, this embodiment provides a quick-connect snap-fit ​​splicing device for coal mine ventilation ducts, including a female snap-fit ​​ring and a male snap-fit ​​ring for connecting two sections of ventilation duct. The female snap-fit ​​ring consists of a support ring retainer and a ring support. Four support ring retainers are welded onto the ring support, which are used to snap onto the ventilation duct support ring to fix the female snap-fit ​​ring on one section of the ventilation duct. Each support ring retainer consists of a snap-fit ​​half-cylinder one, a snap-fit ​​half-cylinder two, a hinge, an arc-shaped bracket, a bolt, and a bolt seat. The snap-fit ​​half-cylinder two is welded to the front of the ring support, and is rotatably connected to the snap-fit ​​half-cylinder one via a hinge. The snap-fit ​​half-cylinder one rotates around the snap-fit ​​half-cylinder two via a hinge to achieve the opening and closing function. The bottom of both the snap-fit ​​half-cylinder one and the snap-fit ​​half-cylinder two are integrally formed with bolt seats of the same specification. The threaded hole specifications of the bolt seats are adapted and fixed by matching bolts. The back of the ring support is integrally formed with four arc-shaped brackets, each with a slot. The male clamp ring has the same specifications as the female clamp ring, and it also consists of a bracket ring retainer and a clamp ring bracket. However, the back of the clamp ring bracket is integrally connected with four arc-shaped locking strips, the specifications of which are compatible with the slot specifications of the arc-shaped locking seat. After the female and male clamp rings are fastened and fixed to their corresponding duct support rings, the male clamp ring is then fitted into the arc-shaped locking seat of the female clamp ring through the arc-shaped locking strips, thus connecting the two sections of the duct. The duct support ring at the end of the duct is placed into the second clamping half-tube. The first clamping half-tube is hinged and rotated to fasten onto the second clamping half-tube, fixing the duct support ring within the formed duct structure. The threaded holes of the two bolt seats at the bottom of the first and second clamping half-tubes are aligned, and the bolts matching the threaded holes pass through the bolt seats of the first clamping half-tube and are fitted into the bolt seats of the second clamping half-tube, thus limiting and fixing the bracket ring retainer on the duct support ring. In addition, to improve the connection and sealing between the two sections of the ventilation duct, sealing tape is wrapped between the female and male clamping rings.

[0029] Specifically, this embodiment includes the following components:

[0030] (1) Mother buckle ring 1

[0031] The structural feature of the main clamp ring 1 consists of a bracket ring retainer 1-1 and a clamp ring bracket 1-2. The clamp ring bracket 1-2 is a ring structure used to support and fix the bracket ring retainer 1-1. Four bracket ring retainers 1-1 are welded to the clamp ring bracket 1-2, evenly distributed. Each bracket ring retainer 1-1 consists of a first snap-fit ​​half-cylinder 1-1-1, a second snap-fit ​​half-cylinder 1-1-2, a hinge 1-1-3, an arc-shaped retainer 1-1-4, a bolt 1-1-5, and a bolt seat 1-1-6. The second snap-fit ​​half-cylinder 1-1-2 is welded to the front of the clamp ring bracket 1-2. The first snap-fit ​​half-cylinder 1-1-1 is rotatably connected to the second snap-fit ​​half-cylinder 1-1-2 via the hinge 1-1-3, realizing the opening and closing function. Both the first and second half-cylinder sections 1-1-1 and 1-1-2 have integrally formed bolt seats 1-1-6 at their bottoms. The threaded holes of the bolt seats 1-1-6 are compatible, and they are fixed by bolts 1-1-5. The back of the hoop bracket 1-2 has four integrally formed arc-shaped retainers 1-1-4. The bracket ring retainer 1-1 is used to fasten onto the wind duct bracket ring that comes with the wind duct, thus fixing the female hoop ring 1 onto the wind duct. The arc-shaped retainers 1-1-4 are used to cooperate with the arc-shaped retaining strips 2-1-4 of the male hoop ring 2 to achieve a stable connection between the two sections of the wind duct. Through the opening and closing functions of the first and second half-cylinder sections 1-1-1 and 1-1-2, and the fixing effect of the bolts 1-1-5, a stable connection between the female hoop ring 1 and the wind duct bracket ring is achieved.

[0032] (2) Male buckle ring 2

[0033] The male clamp ring 2 has a similar structure to the female clamp ring 1, consisting of a bracket ring retainer 2-1 and a clamp ring bracket 2-2. However, the back of the clamp ring bracket 2-2 is integrally formed with four arc-shaped retaining strips 2-1-4 instead of arc-shaped retaining seats. The bracket ring retainer 2-1 also consists of a first snap-fit ​​half-cylinder 2-1-1, a second snap-fit ​​half-cylinder 2-1-2, a hinge 2-1-3, a bolt 2-1-5, and a bolt seat 2-1-6, but it lacks the arc-shaped retaining seat. The male clamp ring 2 is used to cooperate with the female clamp ring 1 of another section of the air duct to achieve a quick connection between the two sections. The arc-shaped retaining strips 2-1-4 are used to cooperate with the arc-shaped retaining seat 1-1-4 of the female clamp ring 1 to achieve a stable connection. Through the opening and closing functions of the first snap-fit ​​half-cylinder 2-1-1 and the second snap-fit ​​half-cylinder 2-1-2, and the fixing effect of the bolt 2-1-5, a stable connection between the male clamp ring 2 and the air duct bracket ring is achieved. The arc-shaped retaining strip 2-1-4 is used to cooperate with the arc-shaped retaining seat 1-1-4 of the mother buckle ring 1 to realize the continuation of the two sections of the air duct.

[0034] (3) Sealing tape 3

[0035] The sealing tape 3 is made of a soft, elastic material with a certain thickness and width, making it easy to wrap and adhere. It is used to seal the connection gap between the female clamp ring 1 and the male clamp ring 2, improving the sealing performance of the two sections of the duct. Wrapped around the contact surfaces of the female clamp ring 1 and the male clamp ring 2, it ensures a gapless connection and improves sealing performance.

[0036] In this embodiment, the female clamping ring 1 and the male clamping ring 2 are respectively fixed to the duct support rings of the two sections of the duct. The specific operation is as follows: Open the first clamping half-tube 1-1-1 / 2-1-1, place the duct support ring into the second clamping half-tube 1-1-2 / 2-1-2, then rotate the first clamping half-tube 1-1-1 / 2-1-1 to engage with the second clamping half-tube 1-1-2 / 2-1-2, and secure it with bolts 1-1-5 / 2-1-5. Align the female clamping ring 1 and the male clamping ring 2 so that the arc-shaped retaining strip 2-1-4 of the male clamping ring 2 aligns with the arc-shaped retaining seat 1-1-4 of the female clamping ring 1. Then push the male clamping ring 2 so that the arc-shaped retaining strip 2-1-4 engages with the arc-shaped retaining seat 1-1-4, achieving a quick connection between the two sections of the duct. Wrap sealing tape 3 around the connection between the female clamp ring 1 and the male clamp ring 2 to ensure there are no gaps at the connection and improve sealing performance.

[0037] Example 2

[0038] like Figures 1 to 14 As shown in the figure, this embodiment provides an installation method for a quick-release snap-fit ​​splicing device for coal mine ventilation ducts. Specifically:

[0039] 1. Place the clamp bracket 1-2 of the female clamp ring 1 onto the duct support ring at one end of the duct to be connected. Next, open the locking half-cylinder 1-1-1 in the bracket ring retainer 1-1 of the female clamp ring 1, separating it from the locking half-cylinder 2-1-2, exposing the installation position of the duct support ring. Place the duct support ring completely inside the locking half-cylinder 2-1-2, then rotate the locking half-cylinder 1-1-1, using hinge 1-1-3 to tightly engage it with the locking half-cylinder 2-1-2. Finally, secure the locking half-cylinder 1-1-1 and locking half-cylinder 2-1-2 by passing bolt 1-1-5 through bolt seat 1-1-6, ensuring the female clamp ring 1 is securely installed on the duct.

[0040] II. The installation steps of the male buckle ring 2 are similar to those of the female buckle ring 1. The buckle ring bracket 2-2 is placed on the wind duct bracket ring at one end of the wind duct to be connected by the bracket ring fixer 2-1, and the installation is completed by fastening half-duct one 2-1-1 and half-duct two 2-1-2 and fixing with bolts 2-1-5.

[0041] 3. Align the two sections of the air duct with the female clamp ring 1 and male clamp ring 2 already installed, ensuring that the arc-shaped retaining strip 2-1-4 on the back of the male clamp ring 2 aligns with the arc-shaped retaining seat 1-1-4 on the back of the female clamp ring 1. Gently push the two sections of the air duct, allowing the arc-shaped retaining strip 2-1-4 to slide along the trajectory of the arc-shaped retaining seat 1-1-4 until it is fully engaged and locked. At this point, a secure connection is formed between the male clamp ring 2 and the female clamp ring 1.

[0042] 4. At the connection between the female clamp ring 1 and the male clamp ring 2, that is, at the junction of the arc-shaped retaining strip 2-1-4 and the arc-shaped retaining seat 1-1-4, wrap sealing tape 3. The sealing tape 3 should fit tightly against the connection to ensure no gaps, so as to improve the sealing performance of the air duct connection.

[0043] This embodiment has the following features: (1) Fast and convenient: The fastening half-tube 1-1-1 / 2-1-1 and fastening half-tube 2-1-2 / 2-1-2 connected by hinge 1-1-3 / 2-1-3, and the cooperation between arc-shaped clip 2-1-4 and arc-shaped card seat 1-1-4, realize the fast and convenient connection of the air duct; (2) Strong stability: The bracket ring fixer 1-1 / 2-1 is fixed on the air duct bracket ring by bolt 1-1-5 / 2-1-5, which enhances the stability of the connection and avoids poor ventilation effect or safety accidents caused by unstable connection; (3) Good sealing performance: The use of sealing tape 3 effectively seals the connection gap and improves the connection sealing of the two sections of air duct; (4) Wide range of applications: This utility model is applicable to the connection of air ducts of various specifications, and the structure is simple, easy to manufacture and maintain.

[0044] Example 3

[0045] like Figures 1 to 14 As shown, this embodiment provides a specific implementation of a quick-connect snap-fit ​​splicing device for coal mine ventilation ducts. The device mainly consists of a female snap-fit ​​ring 1 and a male snap-fit ​​ring 2, both of which are designed with bracket ring fixers for easy and quick installation. The female snap-fit ​​ring 1 includes a bracket ring fixer 1-1, which is formed by connecting two snap-fit ​​half-cylinders 1-1-1 and 1-1-2 via a hinge 1-1-3, forming an openable structure. The inner side of the snap-fit ​​half-cylinder is provided with a groove that matches the ventilation duct bracket ring, ensuring the stability of the installation. The bottom of the bracket ring fixer 1-1 is also provided with a bolt seat 1-1-6, which can further fix the snap-fit ​​half-cylinder with bolts 1-1-5, enhancing the stability of the connection. In addition, the back of the female snap-fit ​​ring 1 is provided with an arc-shaped locking seat 1-1-4 for cooperating with the arc-shaped locking strip of the male snap-fit ​​ring 2. The male buckle ring 2 has a similar structure to the female buckle ring 1, and also includes a bracket ring retainer 2-1, which is connected by a hinge between a first buckle cylinder 2-1-1 and a second buckle cylinder 2-1-2. Its back side has four evenly distributed arc-shaped retaining strips 2-1-4, which can tightly engage with the arc-shaped retaining seat 1-1-4 of the female buckle ring 1 to form a stable connection.

[0046] When connecting the air ducts, first install the female clamping ring 1 and the male clamping ring 2 onto the air duct support rings of the two sections of the air duct to be connected, and initially fix them using bolts 1-1-5 / 2-1-5 and bolt seats 1-1-6 / 2-1-6. Then, align the two sections of the air duct, allowing the arc-shaped retaining strip 2-1-4 of the male clamping ring 2 to slide along and engage with the arc-shaped retaining seat 1-1-4 of the female clamping ring 1, forming a tight connection. Finally, wrap sealing tape 3 around the connection to ensure a tight seal.

[0047] In addition, in this embodiment, sealing grooves are added to the contact surfaces of the female clamping ring 1 and the male clamping ring 2. The shape of these sealing grooves matches the sealing tape 3, guiding the sealing tape to adhere more accurately to the connection point, thereby effectively preventing gas leakage. When connecting the air duct, the sealing tape 3 is first embedded into the sealing grooves of the female clamping ring 1 and the male clamping ring 2. Then, installation and connection are performed according to the steps of Embodiment 1. Due to the guiding effect of the sealing grooves, the sealing tape 3 can adhere more tightly to the connection point, significantly improving the sealing performance of the device.

[0048] The foregoing has shown and described the basic principles and main features of this utility model, as well as its advantages. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A quick buckle type connecting device for coal mine air ducts, comprising a female buckle ring (1) and a male buckle ring (2) for connecting two sections of air ducts (4), characterized in that: The female buckle ring (1) consists of a bracket ring retainer (1-1) and a buckle ring bracket (1-2). Four bracket ring retainers (1-1) are welded onto the buckle ring bracket (1-2). The bracket ring retainers (1-1) are used to fasten onto the wind duct bracket ring (5) of the wind duct (4) to fix the female buckle ring ring (1) on a section of the wind duct (4). Each bracket ring retainer (1-1) consists of a first fastening half-cylinder (1-1-1), a second fastening half-cylinder (1-1-2), a hinge (1-1-3), an arc-shaped card seat (1-1-4), a bolt (1-1-5), and a bolt seat (1-1-6). The second fastening half-cylinder (1-1-2) is welded onto the buckle ring bracket (1-2). On one side, the snap-fit ​​half-cylinder two (1-1-2) is rotatably connected to the snap-fit ​​half-cylinder one (1-1-1) via a hinge (1-1-3). The snap-fit ​​half-cylinder one (1-1-1) rotates around the snap-fit ​​half-cylinder two (1-1-2) via a hinge (1-1-3) to achieve the opening and closing function. The bottom of both the snap-fit ​​half-cylinder one (1-1-1) and the snap-fit ​​half-cylinder two (1-1-2) are integrally formed with bolt seats (1-1-6) of the same specification. The threaded hole of the bolt seat (1-1-6) is adapted and fixed by matching bolts (1-1-5). The back of the hoop bracket (1-2) is integrally formed with four arc-shaped card seats (1-1-4), and the arc-shaped card seats (1-1-4) are provided with card slots. The male buckle ring (2) consists of a bracket ring retainer (1-1) and a buckle ring bracket (1-2). Four bracket ring retainers (1-1) are welded onto the buckle ring bracket (1-2). The bracket ring retainers (1-1) are used to fasten onto the wind duct bracket ring (5) of the wind duct (4) to fix the male buckle ring (2) on another section of the wind duct (4). Each bracket ring retainer (1-1) consists of a half-tube fastener. The system consists of a snap-fit ​​half-cylinder (1-1-1), a hinge (1-1-3), an arc-shaped retaining strip (2-1), a bolt (1-1-5), and a bolt seat (1-1-6). The snap-fit ​​half-cylinder (1-1-2) is welded to the front of the hoop bracket (1-2). The snap-fit ​​half-cylinder (1-1-2) is rotatably connected to the snap-fit ​​half-cylinder (1-1-1) via the hinge (1-1-3). The snap-fit ​​half-cylinder (1-1-1) is rotatably connected to the snap-fit ​​half-cylinder (1-1-1). The opening and closing function is achieved by rotating the hinge (1-1-3) around the second snap-fit ​​half cylinder (1-1-2). The bottom of the first snap-fit ​​half cylinder (1-1-1) and the second snap-fit ​​half cylinder (1-1-2) are integrally formed and connected with bolt seats (1-1-6) of the same specification. The thread hole of the bolt seat (1-1-6) is adapted and fixed by matching bolts (1-1-5). The back of the hoop bracket (1-2) is integrally formed and connected with four arc-shaped clips (2-1). The specifications of the arc-shaped clips (2-1) are adapted to the slot specifications of the arc-shaped clip seat (1-1-4). After the female snap-fit ​​ring (1) and the male snap-fit ​​ring (2) are respectively snapped and fixed with the corresponding air duct bracket ring (5), the male snap-fit ​​ring (2) is snapped and assembled into the arc-shaped clip seat (1-1-4) of the female snap-fit ​​ring (1) through the arc-shaped clips (2-1) to realize the continuation of the two sections of air duct (4).

2. The quick buckling type connecting device for mine air ducts according to claim 1, characterized in that: The duct support ring (5) at the end of the duct (4) is placed inside the second half-tube (1-1-2). The first half-tube (1-1-1) is rotated and fastened to the second half-tube (1-1-2) through the hinge (1-1-3), and the duct support ring (5) is fixed inside the formed cylinder structure. The threaded holes of the two bolt seats (1-1-6) at the bottom of the first half-tube (1-1-1) and the second half-tube (1-1-2) are aligned. The bolt (1-1-5) matching the threaded hole passes through the bolt seat (1-1-6) of the first half-tube (1-1-1) and is assembled into the bolt seat (1-1-6) of the second half-tube (1-1-2), so as to realize the limiting and fixing of the support ring retainer (1-1) on the duct support ring (5).

3. The quick buckling type connecting device for air ducts in coal mines according to claim 1, characterized in that: A sealing tape (3) is wrapped between the female buckle ring (1) and the male buckle ring (2). The sealing tape (3) is used to seal the connection gap to improve the connection and sealing of the two sections of the air duct (4).

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