An adjustable quick-installation device and method for concealed sprinkler systems

Abstract

This invention provides an adjustable quick-installation device and method for concealed sprinklers, relating to the field of fire protection system components. Addressing the problems of inconvenient installation and easy loosening of fasteners in current concealed sprinkler heads, the invention employs a rotating connection between a first fastener and a second fastener. The first and second fasteners interlock to form a clamping space for fixing the water outlet pipe. A groove for passing through the keel is formed within the first fastener. A guide slope is formed at the end of the second fastener away from the rotating connection position. A threaded rod is threaded onto the first fastener corresponding to the guide slope position. One end of the threaded rod serves as the operating end, and the other end abuts against the guide slope. By adjusting the axial relative position of the threaded rod with the first fastener, the relative rotation angle between the first and second fasteners is adjusted, thereby changing the tightness of the clamping space. This facilitates the installation of the fastener and allows for locking using the threaded rod.

Description

Technical Field

[0001] This invention relates to the field of fire protection system components, and more specifically to an adjustable quick-installation device and method for concealed sprinklers. Background Technology

[0002] Currently, fire protection pipelines in buildings are all pre-installed and fixed. After the main fire protection pipeline is laid out, branch pipes are connected from the main pipeline to each room, and then sprinkler heads are installed at the corresponding positions of the branch pipes.

[0003] Chinese patent (publication number CN118110843A) discloses a screw-type quick-installation center fastener. In installation scenarios without a keel, one end of a screw is fixed to the roof according to the installation position, and the other end is inserted into the threaded hole of the screw-type quick-installation center fastener. A nut is then used to secure it, allowing the screw-type quick-installation fastener to be suspended on the screw. The outlet pipe of the fire hose is then inserted into the pipe fixing hole formed by the first and second fasteners of the screw-type quick-installation center fastener, and its position is adjusted for fixation. The fire hose installation is complete. In narrow installation scenarios where square tubes or brackets cannot be installed for fixation, after finding a suitable installation position for the outlet pipe, the screw-type quick-installation center fastener is first fixed to the roof through the installation holes at both ends. Then, the outlet pipe of the fire hose is inserted into the pipe fixing hole formed by the first and second fasteners of the screw-type quick-installation center fastener, enabling the normal use of the fire hose. When installing sprinkler heads in fire protection pipelines in environments with keel structures, the aforementioned fasteners are inconvenient to fix to the square tubes, brackets, or other parts of the keel. Furthermore, current fasteners have limited space for movement when installed on square tubes, making them difficult to install, and after installation, they are prone to sliding due to the large space. During installation, the fasteners and fastener plates generally have a large travel range, requiring two-hand operation when clamping, which complicates the installation process and affects the installation efficiency and stability of concealed sprinkler heads. Summary of the Invention

[0004] The purpose of this invention is to address the deficiencies of existing technologies by providing an adjustable quick-installation device and method for concealed sprinklers. It employs a first and second fastener with a rotatable connection, which interlock to form a clamping space for fixing the water outlet pipe. The first fastener has a groove that passes through the keel. The second fastener has a guide slope at its end away from the rotatable connection position. A threaded rod is threaded onto the first fastener corresponding to the guide slope position. One end of the threaded rod serves as the operating end, and the other end abuts against the guide slope. By adjusting the axial position of the threaded rod relative to the first fastener, the relative rotation angle between the first and second fasteners is adjusted, thereby changing the tightness of the clamping space. This facilitates the installation of the fastener and allows for locking using the threaded rod.

[0005] The first objective of this invention is to provide an adjustable quick-installation device for concealed sprinkler systems, which employs the following solution:

[0006] include:

[0007] The first fastener has a first through groove through which the fixing rod passes. One side of the first through groove is closed and the other side forms a side opening. The side plate of the first fastener has a first groove for accommodating the water outlet pipe, and the first groove extends to the side opening. A threaded rod is threadedly fitted onto the side plate of the first fastener.

[0008] The second fastener has one end rotatably connected to the first fastener, and the other end is provided with a guide slope that is inclined relative to the axis of the threaded rod. The guide slope is located in the first through groove. The second fastener cooperates with the first fastener to hug and seal the opening of the first groove. One end of the threaded rod abuts against the guide slope. When the threaded rod is driven to rotate, it pushes the guide slope to drive the second fastener to rotate relative to the first fastener.

[0009] Furthermore, the first through groove is a variable cross-section groove, including a sliding groove near the closed side of the first through groove and a receiving groove near the side opening. The sliding groove is used to cooperate with the fixing rod, and the receiving groove is provided with a first groove on each of the two side plates of the first fastener.

[0010] Furthermore, along the direction of the line connecting the two side plates of the first fastener, the thickness of the receiving groove is greater than the thickness of the sliding groove.

[0011] Furthermore, both the first and second fasteners have a U-shaped cross section, and the side of the second fastener is a lug. A locking assembly is provided at the overlapping position between the lug and the side plate to temporarily fix the first and second fasteners.

[0012] Furthermore, the second fastener is provided with a second through groove, and an engagement assembly is provided on one side of the ear plate of the second through groove, while a stop is provided on the other side of the ear plate. The stop can abut against the threaded rod to constrain the relative position of the first fastener and the second fastener.

[0013] Furthermore, the guide slope is located between the ear plates on both sides of the second fastener, and the axis of the threaded rod is parallel to the rotation axis of the first fastener relative to the second fastener.

[0014] Furthermore, a second groove is provided on the ear plate, which engages with the first groove to form a clamping space for holding the water outlet pipe.

[0015] Furthermore, the side plate is provided with a threaded hole, one end of the threaded rod passes through the threaded hole to abut against and push the guide slope, and the other end is the operating end.

[0016] A second objective of the present invention is to provide a method of operating the adjustable quick-release device for concealed sprinkler systems as described in the first objective, comprising:

[0017] When the first and second fasteners rotate, the first groove is opened, and the external fixing rod is inserted into the first through groove.

[0018] The water outlet pipe enters the first groove from the side opening of the first through groove. The second fastener rotates to seal the first groove, thus constraining the water outlet pipe within the first groove.

[0019] The guide ramp rotates with the second fastener. After the end of the guide ramp near the threaded rod passes the threaded rod, the threaded rod is rotated so that the threaded rod abuts against the guide ramp.

[0020] Adjust the threaded rod to drive the second fastener to rotate relative to the first fastener, so as to clamp the water outlet pipe and fix the water outlet pipe to the fixed rod.

[0021] Furthermore, when the second fastener and the first fastener clamp the water outlet pipe, the water outlet pipe pushes the fixing rod to fit against the closed side of the first through groove, and the first fastener and the second fastener together clamp the fixing rod and the water outlet pipe.

[0022] Compared with the prior art, the advantages and positive effects of this invention are:

[0023] (1) To address the problems of inconvenient installation and easy loosening of fasteners in concealed sprinkler heads, a rotating connection is adopted for the first and second fasteners. The first and second fasteners are joined together to form a clamping space for fixing the water outlet pipe. A sliding groove is formed inside the first fastener that passes through the keel. A guide slope is formed at the end of the second fastener away from the rotating connection position. A threaded rod is threaded on the first fastener corresponding to the guide slope position. One end of the threaded rod serves as the operating end, and the other end abuts against the guide slope. By adjusting the relative position of the threaded rod with the first fastener in the axial direction, the relative rotation angle of the first and second fasteners is adjusted, thereby changing the tightness of the clamping space, facilitating the installation of the fasteners and achieving locking using the threaded rod.

[0024] (2) The engaging component can adopt a structure of protrusion and recess. The protrusion is arranged on the side plate of the first fastener and the recess is arranged on the ear plate of the second fastener. At their overlapping position, the protrusion is embedded in the recess to form a preliminary fixation and can be released under external force to form a temporary engaging state to prevent them from separating accidentally. Attached Figure Description

[0025] The accompanying drawings, which form part of this invention, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an improper limitation of the invention.

[0026] Figure 1 This is a schematic diagram of the adjustable quick-installation device for concealed sprinkler systems after installation in Embodiments 1 and 2 of the present invention.

[0027] Figure 2 This is a schematic diagram of the adjustable quick-installation device for concealed spraying in Embodiments 1 and 2 of the present invention.

[0028] Figure 3This is a schematic diagram showing the first and second fasteners after they are opened in embodiments 1 and 2 of the present invention.

[0029] The components include: 1. Quick-install device; 2. Water outlet pipe; 3. Fixing rod; 4. Spray head; 5. First fastener; 6. Second fastener; 7. Slide groove; 8. Receiving groove; 9. First groove; 10. Threaded rod; 11. Side plate; 12. Pin; 13. Second groove; 14. Guide slope; 15. Stop; 16. Threaded hole; 17. Protrusion; 18. Recess; 19. Ear plate; 20. Actuating plate; 21. Clamping space. Detailed Implementation

[0030] Example 1

[0031] In a typical embodiment of the present invention, such as Figures 1-3 As shown, an adjustable quick-installation device for concealed sprinkler systems is presented.

[0032] Existing screw-type quick-installation center fasteners are mainly used for installing fire hoses, especially in installation scenarios without a keel or in confined spaces. However, in environments with a keel, the fasteners are difficult to install due to limited movement space, and they are prone to slippage after installation due to the larger space. Furthermore, the fixing methods of existing fasteners are not flexible enough to meet various installation requirements. Based on this, this embodiment proposes an adjustable quick-installation device for concealed sprinklers, providing a more flexible, easy-to-install, and stable fastener solution.

[0033] like Figure 1 As shown, the adjustable quick-installation device 1 for concealed sprinkler systems is used in fire pipeline installation scenarios. It can fix the outlet pipe 2 to the fixing rod 3, facilitating the installation of concealed sprinkler heads 4 at the end of the outlet pipe 2, thus achieving a concealed sprinkler system layout. Figure 2 As shown, the adjustable quick-release device 1 for concealed sprinklers mainly includes a first fastener 5 and a second fastener 6. Both the first fastener 5 and the second fastener 6 are U-shaped channel steel structures. The first fastener 5 and the second fastener 6 are rotatably connected by a pin 12. The first fastener 5 can cooperate with the fixing rod 3 of the external keel. When the first fastener 5 and the second fastener 6 are fastened, they can tightly grip and clamp the water outlet pipe 2. A threaded rod 10 is installed on the first fastener 5, and a guide slope 14 is provided on the second fastener 6 to cooperate with the threaded rod 10 to form an adjustment assembly. When the first fastener 5 and the second fastener 6 are fastened, the threaded rod 10 on the first fastener 5 can be rotated to adjust its axial position to abut against the guide slope 14, thereby pushing the guide slope 14 to move and drive the second fastener 6 to rotate relative to the first fastener 5, changing the clamping state of the first fastener 5 and the second fastener 6, and realizing the clamping and locking of the water outlet pipe 2 on the fixing rod 3.

[0034] like Figure 2As shown, the first fastener 5 has a first through groove through which the fixing rod 3 passes. One side of the first through groove is closed, and the other side forms a side opening, which is distributed opposite to the second fastener 6. Both ends of the first through groove are open. When the first fastener 5 and the second fastener 6 are not clamped, a sliding fit is formed between the first through groove and the fixing rod 3, and the position of the first fastener 5 relative to the fixing rod 3 can be adjusted by sliding. Figure 1 As shown, the fixing rod 3 can be a crossbeam, square tube, etc. in the keel system, and can be distributed horizontally, inclined, or vertically. With the cooperation of the first fastener 5 and the second fastener 6, the entire concealed sprinkler adjustable quick-installation device 1 can be stably installed on the fixing rod 3.

[0035] The side plate 11 of the first fastener 5 has a first groove 9 for accommodating the water outlet pipe 2. The first groove 9 extends to the side opening. After the water outlet pipe 2 is connected to the spray head 4, it can be inserted into the first groove 9 from the opening on one side. When the water outlet pipe 2 is not connected to the spray head 4, it can also be inserted from one side of the first groove 9. The side plate 11 of the first fastener 5 has a threaded rod 10 for use in conjunction with the guide slope 14 to achieve adjustment.

[0036] like Figure 2 As shown, one end of the second fastener 6 is rotatably connected to the first fastener 5, which can be achieved by using a pin 12. The other end of the second fastener 6 is provided with a guide slope 14 that is inclined relative to the axis of the threaded rod 10. It can be understood that the second fastener 6 is a groove plate type structure, with a pin 12 installed at one end along the length direction and a guide slope 14 provided at the other end.

[0037] After the first fastener 5 engages with the second fastener 6, the guide slope 14 can be pushed into the first through groove by rotation. At this time, the second fastener 6 engages with the first fastener 5 to seal the opening of the first groove 9, thereby constraining the position of the water outlet pipe 2 in the first groove 9.

[0038] One end of the threaded rod 10 abuts against the guide slope 14. When the threaded rod 10 is driven to rotate, it pushes the guide slope 14 to drive the second fastener 6 to rotate relative to the first fastener 5, thereby adjusting the tightness of the clamping space 21.

[0039] By adjusting the axial position of the threaded rod 10 relative to the first fastener 5, the relative rotation angle between the first fastener 5 and the second fastener 6 can be changed, thereby adjusting the tightness of the clamping space 21. This makes the fastener more flexible during installation and allows for stable fixing using the locking action of the threaded rod 10. The locking action of the threaded rod 10 ensures the stability of the fastener after installation. Simultaneously, since the first groove 9 and the first through groove are connected, when the second fastener 6 cooperates with the first fastener 5 to clamp the water outlet pipe 2, the segment of the water outlet pipe 2 within the first through groove will also push the fixing rod 3 within the first through groove, clamping and fixing the fixing rod 3, thus preventing slippage due to the large space.

[0040] After the first fastener 5 and the second fastener 6 are engaged, the fasteners can be installed and clamped by adjusting the threaded rod 10. This eliminates the need for two-handed operation, greatly simplifying the installation process and improving installation efficiency.

[0041] like Figure 3 As shown, the first through groove is a variable cross-section groove, including a sliding groove 7 near the closed side of the first through groove and a receiving groove 8 near the side opening. The sliding groove 7 and the receiving groove 8 are distributed sequentially along the direction from the closed side of the first through groove to the side opening. The sliding groove 7, which is the portion near the closed side of the first through groove, is used to accommodate the passing of the fixing rod 3. The size and shape of the sliding groove 7 match the fixing rod 3, ensuring that the fixing rod 3 can be securely inserted and fixed within the sliding groove 7.

[0042] The receiving groove 8 is the portion of the first through groove near the side opening. Along the line connecting the two side plates 11 of the first fastener 5, the thickness of the receiving groove 8 is greater than the thickness of the sliding groove 7. The receiving groove 8 is used to cooperate with the second fastener 6 and the water outlet pipe 2. The two side plates 11 of the first fastener 5 corresponding to the receiving groove 8 are respectively provided with first grooves 9. The two first grooves 9 cooperate with the second fastener 6 to form a clamping space 21 for clamping the water outlet pipe 2.

[0043] Along the line connecting the two side plates 11 of the first fastener 5, the thickness of the receiving groove 8 is greater than the thickness of the sliding groove 7, forming a bending transition between the receiving groove 8 and the sliding groove 7. In use, the fixing rod 3 can be inserted into the thicker receiving groove 8 first, and then pushed into the sliding groove 7 through the bending transition, thereby improving the installation efficiency. This ensures the stable fit of the sliding groove 7 with the fixing rod 3, and provides enough space to accommodate and clamp the water outlet pipe 2 and the second fastener 6.

[0044] like Figure 2 and Figure 3 As shown, the cross-sections of the first fastener 5 and the second fastener 6 are both U-shaped, forming a grooved plate structure, which allows the first fastener 5 and the second fastener 6 to partially overlap, and the second fastener 6 to be tightly fitted to the outside of the first fastener 5, forming a stable clamping structure.

[0045] The side of the second fastener 6 is a lug plate 19. The lug plate 19 and the side plate 11 of the first fastener 5 are provided with a locking component at the overlapping position for temporarily fixing the first fastener 5 and the second fastener 6, which facilitates installation and adjustment.

[0046] In this embodiment, the engaging assembly can employ a mating structure of a protrusion 17 and a recess 18. The protrusion 17 is disposed on the side plate 11 of the first fastener 5, and the recess 18 is disposed on the ear plate 19 of the second fastener 6. At their overlapping positions, the protrusion 17 is embedded in the recess 18, forming a preliminary fixation, and can be disengaged under external force to form a temporary engaging state. In other optional embodiments, other forms can also be adopted, such as elastic retaining beads mating with grooves.

[0047] The locking components are distributed on the side plate 11 of the first fastener 5 and the ear plate 19 on the side of the second fastener 6, and are used to temporarily fix the position of the first fastener 5 and the second fastener 6 during the adjustment process to prevent them from separating accidentally.

[0048] In addition, such as Figure 3 As shown, a stop 15 is also formed on the ear plate 19 of the second fastener 6. The stop 15 is U-shaped and can abut against the threaded rod 10, thereby constraining the relative position of the first fastener 5 and the second fastener 6, avoiding excessive clamping between the first fastener 5 and the second fastener 6, and constraining the maximum clamping position of the first fastener 5 and the second fastener 6 in the locked state.

[0049] The guide ramp 14 is located between the ear plates 19 on both sides of the second fastener 6, such as... Figure 3 As shown, the guide slope 14 is formed by bending the base plate of the second fastener 6, and can adopt a groove structure, with a guide section formed in the groove.

[0050] The axis of the threaded rod 10 is parallel to the rotation axis of the first fastener 5 relative to the second fastener 6, so that the threaded rod 10 can smoothly push the guide slope 14 when rotating, thereby driving the second fastener 6 to rotate relative to the first fastener 5.

[0051] The ear plate 19 has a second groove 13, which engages with the first groove 9 on the first fastener 5 to form a clamping space 21 for holding the water outlet pipe 2. This ensures that the water outlet pipe 2 is securely clamped between the fasteners and is not easily loosened.

[0052] The side plate 11 is provided with a threaded hole 16. One end of the threaded rod 10 passes through the threaded hole 16 and abuts against the guide slope 14, while the other end is the operating end. By rotating the operating end, the axial position of the threaded rod 10 can be adjusted, thereby changing the relative rotation angle between the first fastener 5 and the second fastener 6 and the tightness of the clamping space 21.

[0053] Through the design of the variable cross-section groove, the cooperation between the locking assembly and the stop 15, and the adjustable threaded rod 10, this embodiment provides greater installation flexibility and adaptability, meeting the installation needs of different scenarios. The robust clamping structure and the locking effect of the threaded rod 10 ensure the stability and reliability of the fastener after installation, preventing safety hazards caused by loosening or slippage. The fastener can be installed and clamped with a simple rotation operation, eliminating the need for complex tools and steps, greatly simplifying the installation process. It is suitable for various installation scenarios and different types of water outlet pipes 2, exhibiting high versatility and applicability.

[0054] In addition, a toggle plate 20 is provided on the ear plate 19 of the second fastener 6 for easy operation. The toggle plate 20 is formed by bending and extending the ear plate 19 and protruding from the ear plate 19, which facilitates the operation of pushing the second fastener 6 to engage with or disengage from the first fastener 5.

[0055] The side plate 11 is provided with a threaded hole 16. One end of the threaded rod 10 passes through the threaded hole 16 to abut against and push the guide slope 14, and the other end is the operating end. The operating end can adopt a structure in the form of hexagonal head, internal hexagonal head, slotted head or cross slot, which facilitates the use of external operating tools and improves installation efficiency.

[0056] Example 2

[0057] In another typical embodiment of the present invention, such as Figures 1-3 As shown, a method for operating an adjustable quick-installation device for concealed sprinklers is provided, utilizing the adjustable quick-installation device for concealed sprinklers as described in Example 1.

[0058] A method for operating an adjustable quick-release device for concealed sprinkler systems includes:

[0059] The first fastener 5 and the second fastener 6 rotate to open the first groove 9, and the external fixing rod 3 is inserted into the first through groove;

[0060] The water outlet pipe 2 enters the first groove 9 from the side opening of the first through groove. The second fastener 6 rotates to seal the first groove 9, so that the water outlet pipe 2 is constrained in the first groove 9.

[0061] The guide slope 14 rotates with the second fastener 6. After the end of the guide slope 14 near the threaded rod 10 passes the threaded rod 10, the threaded rod 10 is rotated so that the threaded rod 10 abuts against the guide slope 14.

[0062] Adjust the threaded rod 10 to drive the second fastener 6 to rotate relative to the first fastener 5, so as to clamp the water outlet pipe 2 and fix the water outlet pipe 2 on the fixing rod 3.

[0063] When the second fastener 6 and the first fastener 5 clamp the water outlet pipe 2, the water outlet pipe 2 pushes the fixing rod 3 to fit against the closed side of the first through groove, and the first fastener 5 and the second fastener 6 together clamp the fixing rod 3 and the water outlet pipe 2.

[0064] The fastener structure of this embodiment is suitable for various installation scenarios and different types of water outlet pipes 2, exhibiting high versatility and applicability. This allows the fastener to be widely used in various fields such as water conservancy, construction, and agriculture, enhancing the product's market competitiveness.

[0065] By optimizing the structural design and installation process of the fasteners, this embodiment significantly improves installation efficiency and quality. It not only reduces installation difficulty and cost but also enhances the stability and reliability of the system.

[0066] The robust clamping structure and the locking action of the threaded rod 10 ensure the stability and reliability of the fastener after installation, thereby enhancing the safety of the system. This effectively prevents safety hazards caused by loosening or slippage, improving the overall performance and safety of the system.

[0067] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. An adjustable quick-installation device for concealed sprinkler systems, characterized in that, include: The first fastener has a first through groove through which the fixing rod passes. One side of the first through groove is closed and the other side forms a side opening. The side plate of the first fastener has a first groove for accommodating the water outlet pipe, and the first groove extends to the side opening. A threaded rod is threadedly fitted onto the side plate of the first fastener. The second fastener has one end rotatably connected to the first fastener, and the other end is provided with a guide slope that is inclined relative to the axis of the threaded rod. The guide slope is located in the first through groove. The second fastener cooperates with the first fastener to hug and seal the opening of the first groove. One end of the threaded rod abuts against the guide slope. When the threaded rod is driven to rotate, it pushes the guide slope to drive the second fastener to rotate relative to the first fastener. The first and second fasteners both have a U-shaped cross section. The side of the second fastener is a lug plate. A locking component is provided at the overlapping position between the lug plate and the side plate to temporarily fix the first and second fasteners. The guide ramp is located between the ear plates on both sides of the second fastener, and the axis of the threaded rod is parallel to the rotation axis of the first fastener relative to the second fastener.

2. The adjustable quick-installation device for concealed sprinkler systems as described in claim 1, characterized in that, The first through groove is a variable cross-section groove, including a sliding groove near the closed side of the first through groove and a receiving groove near the side opening. The sliding groove is used to cooperate with the fixing rod, and the receiving groove is provided with a first groove on each of the two side plates of the first fastener.

3. The adjustable quick-installation device for concealed sprinkler systems as described in claim 2, characterized in that, Along the line connecting the two side plates of the first fastener, the thickness of the receiving groove is greater than the thickness of the sliding groove.

4. The adjustable quick-installation device for concealed sprinkler systems as described in claim 1, characterized in that, The second fastener is provided with a second through groove. A locking assembly is provided on one side of the ear plate of the second through groove, and a stop is provided on the other side of the ear plate. The stop can abut against the threaded rod to constrain the relative position of the first fastener and the second fastener.

5. The adjustable quick-installation device for concealed sprinkler systems as described in claim 1, characterized in that, The ear plate has a second groove, which engages with the first groove to form a clamping space for holding the water outlet pipe.

6. The adjustable quick-installation device for concealed sprinkler systems as described in claim 1, characterized in that, The side plate is provided with a threaded hole. One end of the threaded rod passes through the threaded hole to abut against and push the guide slope, and the other end is the operating end.

7. A method for operating an adjustable quick-installation device for concealed sprinkler systems, utilizing the adjustable quick-installation device for concealed sprinkler systems as described in any one of claims 1-6, characterized in that... include: When the first and second fasteners rotate, the first groove is opened, and the external fixing rod is inserted into the first through groove. The water outlet pipe enters the first groove from the side opening of the first through groove. The second fastener rotates to seal the first groove, thus constraining the water outlet pipe within the first groove. The guide ramp rotates with the second fastener. After the end of the guide ramp near the threaded rod passes the threaded rod, the threaded rod is rotated so that the threaded rod abuts against the guide ramp. Adjust the threaded rod to drive the second fastener to rotate relative to the first fastener, so as to clamp the water outlet pipe and fix the water outlet pipe to the fixed rod.

8. The operating method of the adjustable quick-installation device for concealed sprinkler systems as described in claim 7, characterized in that, When the second fastener and the first fastener clamp the water outlet pipe, the water outlet pipe pushes the fixing rod to fit against the closed side of the first through groove, and the first fastener and the second fastener together clamp the fixing rod and the water outlet pipe.

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