Quick connection tool for building fire pipe

Abstract

This application relates to a quick-connect tool for building fire protection pipes, and pertains to the technical field of fire protection pipes. It includes a fixing sleeve with an axial length 1 to 1.5 times the diameter of the fire protection pipe. The fixing sleeve comprises a first half-sleeve and a second half-sleeve, which open and close via a pivot. At least two locking mechanisms are arranged axially along the first and second half-sleeves away from the pivot, connecting them for locking. An annular cavity is provided in the sleeve wall at the connection point of the two fire protection pipes. Oppositely arranged arc-shaped holes are formed in the first and second half-sleeves within this annular cavity. These arc-shaped holes allow clamps to pass through the fixing sleeve and press against the sealing ring at the connection point of the two fire protection pipes. This application improves the efficiency of quickly aligning and conveniently installing fire protection pipes in confined spaces.

Description

Technical Field

[0001] This application relates to the technical field of fire protection piping, and in particular to connection tools for fire protection piping. Background Technology

[0002] Fire protection pipelines are core facilities for ensuring building safety. In many building spaces, to maximize space utilization and maintain aesthetics, a large number of fire protection pipelines need to be laid in narrow areas such as above the ceiling and inside pipe racks. The conventional construction method is to erect the fire protection pipelines on pre-installed hangers, connect two pipelines using sealing rings, and then use clamps for connection and fixation. Currently, these clamps are usually connected using bolts. Tightening the bolts creates radial force in the clamps to compress the sealing rings, thereby achieving a seal at the pipeline connection.

[0003] However, in practice, especially in areas with poor visibility and extremely limited space, such as suspended ceilings and pipe corridors, the heavy weight of fire protection pipes makes positioning and support in confined spaces extremely difficult. This results in a significant amount of time and effort being spent on the initial alignment and installation of the connection ports between two fire protection pipes. Installing the sealing ring at the connection point and securing it with bolts requires the operator to perform the installation under obstructed visibility. This process further consumes considerable time and effort to ensure precise alignment of the threaded holes on the clamps and successful screwing in of the bolts, making the sealing installation of fire protection pipes extremely inefficient. Utility Model Content

[0004] In view of the shortcomings of the existing technology, one of the purposes of this utility model is to provide a quick connection tool for building fire protection pipes.

[0005] The quick connection tool for building fire protection pipes provided in this application adopts the following technical solution:

[0006] The quick connection tool for building fire protection pipes includes a cylindrical structure installed at the connection of two fire protection pipes, which is called a fixed sleeve.

[0007] The axial length of the fixed sleeve is 1 to 1.5 times the diameter of the fire-fighting pipe;

[0008] The fixed sleeve includes a first half-cylinder and a second half-cylinder, which are opened and closed by a rotating shaft.

[0009] At least two locking mechanisms are arranged along the axial direction of the fixed sleeve at the ends of the first and second half-cylinders away from the rotating shaft. The locking mechanisms connect the first and second half-cylinders to achieve locking.

[0010] The wall of the fixed sleeve is provided with an annular cavity for accommodating the clamp at the connection of the two fire pipes.

[0011] The first half-cylinder and the second half-cylinder are respectively provided with oppositely arranged arc-shaped holes in the annular cavity;

[0012] The arc-shaped hole is used for the clamp to pass through the fixing sleeve and press against the sealing ring at the connection of the two fire pipes.

[0013] By adopting the above technical solution, this application addresses the problems of initial alignment difficulties and subsequent difficulty in screwing in clamp bolts when installing fire-fighting pipelines in confined spaces, as well as the difficulties in aligning and screwing in clamp bolts in existing technologies. This application provides a reliable external auxiliary alignment benchmark for two fire-fighting pipelines by setting a moderately long, split-type fixing sleeve. The cylindrical structure of the fixing sleeve can effectively correct and maintain the coaxiality of the two fire-fighting pipelines, greatly reducing the difficulty and time consumption of initial alignment. At the same time, the pre-set annular cavity and arc-shaped hole structure on the fixing sleeve provide clear accommodation space and passage for clamps, allowing operators to quickly complete the clamp placement and installation without precise visual positioning, fundamentally solving the problem of difficulty in aligning clamp bolts in poor visibility environments. In addition, this quick-connect tool adopts a hinge and locking mechanism, realizing quick opening and closing and assembly and disassembly, integrating the originally cumbersome positioning, clamping, and tightening process of clamps into a simple wrapping and locking action, thereby significantly improving the overall efficiency of fire-fighting pipeline connection operations.

[0014] Preferably, the locking mechanism has a first connecting block fixedly disposed on the outer periphery of the first half-cylinder and a second connecting block fixedly disposed on the outer periphery of the second half-cylinder;

[0015] The first connecting block has a cylindrical through hole, and the second connecting block has a threaded hole. The through hole and the threaded hole are coaxially arranged, and the diameter of the through hole is 1 to 3 mm larger than the diameter of the threaded hole.

[0016] The first half-cylinder and the second half-cylinder are locked together by a bolt passing through the through hole and the threaded hole in sequence.

[0017] By adopting the above technical solution, the locking mechanism uses a mating method with a through hole on one side and a threaded hole on the other side, and the diameter of the through hole is 1 to 3 mm larger than the diameter of the threaded hole. This design enables the quick connection tool of this application to lock quickly. Especially in environments with obstructed vision, the operator can easily pass the bolt through the through hole with tolerance space, and then use this gap to fine-tune the position, guiding the front end of the bolt to be smoothly screwed into the threaded hole. This process has high tolerance for error, significantly reducing the difficulty of alignment and the requirements for operational precision. This makes the installation of fire protection pipelines in conditions with poor visibility and extremely narrow operating space, such as suspended ceilings and pipe corridors, fast and efficient. At the same time, with the auxiliary alignment of the fixed sleeve, rapid connection is further realized.

[0018] Preferably, the first half-cylinder and the first connecting block are integrally formed, and the second half-cylinder and the second connecting block are integrally formed.

[0019] By adopting the above technical solution, the first half-cylinder plate and the first connecting block, and the second half-cylinder plate and the second connecting block are all set as an integral molding structure, eliminating the weak points and stress concentration problems that may be caused by welding or bolt connection, greatly enhancing the structural strength and overall rigidity of the root of the locking mechanism, enabling the locking mechanism to withstand greater locking force and external load, and effectively preventing the risk of loosening or breakage of the connecting block due to long-term use or overload.

[0020] Preferably, a wear-resistant bushing is embedded in the through hole.

[0021] By adopting the above technical solution, a wear-resistant bushing is embedded in the through hole of the first connecting block, which can effectively protect the body of the first connecting block, maintain the design accuracy and smoothness of the through hole, ensure that the bolt can always be smoothly inserted and maintain the appropriate fit clearance, and reduce the maintenance needs caused by wear.

[0022] Preferably, an annular protrusion is provided on the outer periphery of the fixed sleeve corresponding to the annular cavity, and the arc-shaped hole is formed on the annular protrusion.

[0023] By adopting the above technical solution, an annular protrusion is set at the annular cavity of the fixed sleeve, which significantly enhances the structural strength of the fixed sleeve at the annular cavity, protects the arc-shaped hole from damage due to stress during installation and use, further improves the durability of the quick-connect tool, and extends the service life of the quick-connect tool.

[0024] Preferably, the outer surface of the fixing sleeve is coated with an anti-corrosion coating.

[0025] By adopting the above technical solution, an anti-corrosion coating is applied to the outer surface of the fixed sleeve, providing key environmental corrosion protection for the connecting tool. This enables the connecting tool to effectively resist the erosion of common corrosive factors such as moisture and chemicals in the fire pipeline environment, preventing surface rust and the possible reduction in structural strength or difficulty in disassembly. This significantly improves the service life of the connecting tool in harsh environments and reduces long-term maintenance costs.

[0026] In summary, this application includes at least one of the following beneficial technical effects:

[0027] 1. This application addresses the difficulties in initial alignment and subsequent screwing in of clamps and bolts during fire pipe installation in confined spaces using existing technologies. By incorporating a appropriately long, split-type fixing sleeve, a reliable external auxiliary alignment benchmark is provided for the two fire pipes. The cylindrical structure of the fixing sleeve effectively corrects and maintains the coaxiality of the fire pipe interfaces, significantly reducing the difficulty and time consumption of initial alignment. Simultaneously, the pre-set annular cavity and arc-shaped hole structure on the fixing sleeve provide clear accommodating space and passageways for the clamps, allowing operators to quickly install and fit the clamps without precise visual positioning. This fundamentally solves the problem of clamp bolt alignment difficulties in poor visibility conditions. Furthermore, this quick-connect tool employs a hinge and locking mechanism, enabling rapid opening, closing, and assembly / disassembly. It integrates the previously cumbersome positioning, clamping, and tightening process of the clamps into a simple wrapping and locking action, thereby significantly improving the overall efficiency of fire pipe connection operations.

[0028] 2. The locking mechanism adopts a mating method with a through hole on one side and a threaded hole on the other side, and the diameter of the through hole is 1 to 3 mm larger than the diameter of the threaded hole. This design enables the quick connection tool of this application to lock quickly, especially in environments with obstructed vision. Operators can easily pass the bolt through the through hole with tolerance space, and then use this gap to fine-tune the position, guiding the front end of the bolt to be smoothly screwed into the threaded hole. This process has high tolerance for error, significantly reducing the difficulty of alignment and the requirements for operational precision, making the installation of fire protection pipelines in conditions with poor visibility and extremely narrow working space, such as suspended ceilings and pipe corridors, quick and efficient. At the same time, with the auxiliary alignment of the fixed sleeve, rapid connection is further realized.

[0029] 3. The first half-cylinder plate and the first connecting block, and the second half-cylinder plate and the second connecting block are all made into an integral structure, which eliminates the weak points and stress concentration problems that may be caused by welding or bolt connection, greatly enhances the structural strength and overall rigidity of the root of the locking mechanism, and enables the locking mechanism to withstand greater locking force and external load, effectively preventing the risk of loosening or breakage of the connecting block due to long-term use or overload. Attached Figure Description

[0030] Figure 1 This application embodiment is a structural schematic diagram illustrating a quick-connect tool for building fire protection pipes;

[0031] Figure 2 for Figure 1 The cross-sectional view along AA shows the internal structure of the quick-connect tool for building fire protection pipes;

[0032] Figure 3 for Figure 2 The enlarged view in section B shows the structure of the through hole and the threaded hole.

[0033] Reference numerals: 1. Fixed sleeve; 11. First half-cylinder; 12. Second half-cylinder; 2. Locking mechanism; 21. First connecting block; 22. Second connecting block; 3. Annular cavity; 4. Arc-shaped hole; 5. Through hole; 6. Threaded hole; 7. Annular protrusion; 8. Clamp. Detailed Implementation

[0034] The following is in conjunction with the appendix Figure 1 -Appendix Figure 3 This application will be described in further detail.

[0035] This application discloses a quick connection tool for building fire protection pipes.

[0036] Reference Figure 1 and Figure 2 A quick-connection tool for building fire protection pipes includes a cylindrical structure, referred to as a fixing sleeve 1, installed at the connection point of two fire protection pipes. The axial length of the fixing sleeve 1 is 1 to 1.5 times the diameter of the fire protection pipes. In this embodiment, the axial length of the fixing sleeve 1 is 1.5 times the diameter of the fire protection pipes. This extended design allows the fixing sleeve 1 to fully cover and press against the two fire protection pipes. By increasing the contact area with the fire protection pipes, it can effectively correct and maintain the coaxiality of the two fire protection pipes and improve the bending stiffness at the connection point.

[0037] The fixed sleeve 1 includes a first half-cylinder 11 and a second half-cylinder 12. The first half-cylinder 11 and the second half-cylinder 12 are opened and closed by a pivot. This allows the operator to open the fixed sleeve 1 first and easily hug it to the connection of the two fire pipes from the side when installing in narrow spaces such as ceilings and pipe corridors, and then close it. This greatly simplifies the initial positioning process and lays the foundation for rapid installation. At least two locking mechanisms 2 are arranged along the axial direction of the fixed sleeve 1 at the ends of the first half-cylinder 11 and the second half-cylinder 12 away from the pivot. The locking mechanisms 2 connect the first half-cylinder 11 and the second half-cylinder 12 to lock them together.

[0038] Specifically, refer to Figure 3The locking mechanism 2 has a first connecting block 21 fixedly disposed on the outer periphery of the first half-cylinder 11 and a second connecting block 22 fixedly disposed on the outer periphery of the second half-cylinder 12. The first connecting block 21 has a cylindrical through hole 5 and the second connecting block 22 has a threaded hole 6. The through hole 5 and the threaded hole 6 are coaxially disposed, and the diameter of the through hole 5 is 1 to 3 mm larger than the diameter of the threaded hole 6. The first half-cylinder 11 and the second half-cylinder 12 are locked together by a bolt passing through the through hole 5 and the threaded hole 6 in sequence. By setting multiple locking mechanisms 2, multi-point coordinated locking is achieved, ensuring that the locking force is evenly distributed along the fire pipe, avoiding the displacement of the two fire pipes caused by single-point locking. In actual installation, especially in narrow spaces where visibility is obstructed, the operator does not need to precisely align the two threaded holes that are difficult to observe. He only needs to pass the bolt through the through hole 5 with the tolerance space, and then thread the bolt to the threaded hole 6 on the second connecting block 22 to achieve a fixed connection between the first connecting block 21 and the second connecting block 22, thereby achieving the locking of the first half-cylinder 11 and the second half-cylinder 12.

[0039] Reference Figure 1 At the connection point of the two fire-fighting pipes, the wall of the fixing sleeve 1 has an annular cavity 3 for accommodating the clamp 8. The first half-cylinder 11 and the second half-cylinder 12 each have opposing arc-shaped holes 4 within the annular cavity 3. These arc-shaped holes 4 allow the clamp 8 to pass through the fixing sleeve 1 and press against the sealing ring at the connection point of the two fire-fighting pipes. After the fixing sleeve 1 is installed at the connection point of the two fire-fighting pipes, the pre-set annular cavity 3 and arc-shaped hole 4 structure on the fixing sleeve 1 provide a clear space and passage for the clamp 8. The clamp 8 passes through the arc-shaped hole 4 and presses against the sealing ring at the connection point of the two fire-fighting pipes, and is then locked with bolts, achieving a sealed connection between the two fire-fighting pipes.

[0040] The usage process of the quick connection tool for building fire protection pipelines, sealing ring, and clamp 8 in this application is as follows:

[0041] S1: The operator places the sealing ring on the port of one of the fire pipes, and then connects the other fire pipe to the port of that pipe;

[0042] S2: The fixed sleeve 1, which is in the open state, is closed from the side to the connection of the two fire pipes, so that the arc-shaped hole 4 of the fixed sleeve 1 is at the connection of the two fire pipes.

[0043] S3: Close the first half-cylinder 11 and the second half-cylinder 12, so that the fixing sleeve 1 is completely fitted onto the two fire pipes, and use at least two locking mechanisms 2 to lock and fix the fixing sleeve 1.

[0044] S4: Insert the clamp 8 through the arc-shaped hole 4 of the fixing sleeve 1, wrap around the sealing ring located at the connection of the two fire pipes, and then use bolts to lock the clamp 8, thus completing the sealing installation of the two fire pipes.

[0045] Furthermore, the first half-cylinder 11 and the first connecting block 21 are integrally formed, and the second half-cylinder 12 and the second connecting block 22 are also integrally formed. The integrally formed design enhances the structural integrity and load-bearing capacity of the root of the locking mechanism 2, enabling the first half-cylinder 11 and the first connecting block 21, and the second half-cylinder 12 and the second connecting block 22 to withstand greater locking force and external load, effectively preventing the connecting block and half-cylinder from loosening or breaking due to long-term use or overload.

[0046] A wear-resistant bushing is embedded in the through hole 5 of the first connecting block 21. This wear-resistant bushing is a part independent of the body of the first connecting block 21. It can directly withstand the friction and compression of the bolts being repeatedly inserted and removed, thereby protecting the inner wall of the through hole 5 of the first connecting block 21 and extending the service life of the fixing sleeve 1.

[0047] An annular protrusion 7 is provided on the outer periphery of the fixed sleeve 1 corresponding to the annular cavity 3, and an arc-shaped hole 4 is opened on the annular protrusion 7. The annular protrusion 7 is provided at the annular cavity 3, and the first half-cylinder 11 and the second half-cylinder 12 have arc-shaped holes 4 at the annular protrusion 7, which can enhance the structural strength of the fixed sleeve 1 at the annular cavity 3, and the annular cavity 3 at the annular protrusion 7 can further reserve sufficient space for the clamp 8 to be fitted and locked.

[0048] The outer surface of the fixed sleeve 1 is coated with an anti-corrosion coating. In this embodiment, the anti-corrosion coating is formed by spraying polyurethane paint onto the outer surface of the fixed sleeve 1. This polyurethane paint coating provides effective environmental corrosion protection for the connection tool, preventing structural strength reduction or disassembly difficulties that may be caused by rust on the surface of the fixed sleeve 1, thereby significantly improving the service life of the quick connection tool.

[0049] The implementation principle of this application embodiment is as follows:

[0050] This application's quick-connect tool for building fire protection pipes integrates auxiliary alignment and rapid clamping. The auxiliary alignment is primarily achieved through a specially designed fixed sleeve 1 with an axial length 1 to 1.5 times the diameter of the fire protection pipe. This extended design allows it to span the interface of two fire protection pipes and form a sufficiently long mating section with the outer walls of both ends when locked onto the fire protection pipe. This long cylindrical structure mechanically constitutes a reliable "external reference." When there is a slight deviation in the initial connection of two fire protection pipes, the inner wall of the fixed sleeve 1 will forcibly guide and constrain the two ends of the fire protection pipe, automatically correcting the two fire protection pipes and ensuring precise alignment of the connection ports. This fundamentally solves the initial problem of difficulty in aligning fire protection pipes in confined spaces.

[0051] After alignment and positioning are completed, the pre-set annular cavity 3 on the wall of the fixing sleeve 1 provides a clear receiving space for the clamp 8, while the opposing arc-shaped holes 4 on the two semi-cylindrical plates form a wide guide channel. This allows the operator to easily tighten the clamp 8 bolts even in poor visibility conditions, without needing to precisely locate the mating point of the clamp 8 bolts. The clamp 8 passes through the fixing sleeve 1 and is accurately positioned at the sealing ring. With the assistance of the alignment tool in this application for quick connection of building fire protection pipelines, the clamp 8 bolts can be easily tightened, thus achieving rapid connection of the fire protection pipeline.

[0052] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A quick-connect tool for building fire protection pipes, characterized in that, It includes a cylindrical structure located at the connection of two fire pipes, which is called a fixed sleeve (1); The axial length of the fixed sleeve (1) is 1 to 1.5 times the diameter of the fire pipe; The fixed sleeve (1) includes a first half-cylinder (11) and a second half-cylinder (12), and the first half-cylinder (11) and the second half-cylinder (12) are opened and closed by a rotating shaft; At least two locking mechanisms (2) are arranged along the axial direction of the fixed sleeve (1) at the ends of the first half-cylinder (11) and the second half-cylinder (12) away from the rotating shaft. The locking mechanisms (2) connect the first half-cylinder (11) and the second half-cylinder (12) to achieve locking. The wall of the fixed sleeve (1) is provided with an annular cavity (3) for accommodating the clamp (8) at the connection of the two fire pipes; The first half-cylinder (11) and the second half-cylinder (12) are respectively provided with oppositely arranged arc-shaped holes (4) in the annular cavity (3); The arc-shaped hole (4) is used for the clamp (8) to pass through the fixing sleeve (1) and press against the sealing ring at the connection of the two fire pipes.

2. The quick-connect tool for building fire protection pipes according to claim 1, characterized in that, The locking mechanism (2) has a first connecting block (21) fixedly disposed on the outer periphery of the first half-cylinder (11) and a second connecting block (22) fixedly disposed on the outer periphery of the second half-cylinder (12); The first connecting block (21) has a cylindrical through hole (5), and the second connecting block (22) has a threaded hole (6). The through hole (5) and the threaded hole (6) are coaxially arranged, and the diameter of the through hole (5) is 1 to 3 mm larger than the diameter of the threaded hole (6). The first half-cylinder (11) and the second half-cylinder (12) are locked together by a bolt passing through the through hole (5) and the threaded hole (6) in sequence.

3. The quick connection tool for building fire protection pipelines according to claim 2, characterized in that, The first half-cylinder (11) and the first connecting block (21) are integrally formed, and the second half-cylinder (12) and the second connecting block (22) are integrally formed.

4. The quick-connect tool for building fire protection pipes according to claim 2, characterized in that, The through hole (5) is fitted with a wear-resistant bushing.

5. The quick-connect tool for building fire protection pipes according to claim 1, characterized in that, The outer periphery of the fixed sleeve (1) is provided with an annular protrusion (7) corresponding to the annular cavity (3), and the arc-shaped hole (4) is opened on the annular protrusion (7).

6. The quick-connect tool for building fire protection pipes according to claim 1, characterized in that, The outer surface of the fixed sleeve (1) is coated with an anti-corrosion coating.

Images