Fire-fighting pipe fitting and mounting method thereof

Abstract

The invention relates to the technical field of fire fighting equipment, in particular to a fire fighting pipe fitting and a mounting method thereof. Comprising a four-way joint, one end of the four-way joint is a liquid inlet pipe, the other three ends of the four-way joint are all liquid outlet pipes, the lower ends of the liquid outlet pipes are all fixedly and hermetically communicated with lower cylinders, and the lower end of the middle of the four-way joint is concentrically, rotatably and hermetically connected with a turntable; an inner rod and a rotating rod are rotationally arranged on the rotating disc and are in transmission connection, a winding roller is rotationally arranged in the sliding box and is connected with the rotating rod through a transmission assembly, a channel is formed in the valve seat, one end of a pull rope penetrates through the channel and then is fixedly connected with the winding roller, and a valve ball is fixed to the other end of the pull rope. Through the linkage design of the rotating disc, the sliding box and the valve ball, independent plugging of a single liquid outlet pipe is achieved, and maintenance can be conducted without stopping the whole system.

Description

Technical Field

[0001] The present invention relates to the technical field of fire-fighting equipment, and in particular to a fire-fighting pipe fitting and an installation method thereof. Background Art

[0002] In contemporary building fire protection systems, the performance of the four-way valve, as the core component of fluid distribution, is directly related to the safety and emergency response capabilities of the entire fire protection network. Traditional fire protection four-way valves have long faced systemic technical bottlenecks, especially in complex building environments, where significant functional defects are exposed. When a branch leaks or requires maintenance, existing technologies often force the entire system to shut down, resulting in a temporary vacuum in the fire protection network, which can have catastrophic consequences in scenarios such as high-rise complexes or underground transportation hubs. Traditional plugging devices mostly rely on fixed valves or manual plug-ins, which not only require a large operating space, but are also difficult to implement rapid intervention in narrow pipe shafts. In addition, manual operations are easily affected by water flow impact, making it difficult to achieve instantaneous and precise fit between the valve body and the pipe wall, and are often accompanied by the risk of leakage.

[0003] In order to improve the multi-branch coordinated control capability, some improved designs introduced a rotary valve core structure. However, due to scale deposition caused by long-term static conditions, the transmission mechanism became stuck, and mechanical lock may occur in an emergency. The complex gear set will further weaken the kinetic energy of the water, resulting in insufficient pressure in the terminal spraying equipment.

[0004] Therefore, there is an urgent need for a new fire-fighting pipe fitting that can achieve directional blocking and adaptive sealing while maintaining system operation. Summary of the Invention

[0005] The main purpose of the present invention is to provide a fire protection pipe fitting and an installation method thereof which can selectively close a pipeline connected to a cross-way according to maintenance requirements.

[0006] A fire-fighting pipe fitting comprises a four-way pipe, one end of which is a liquid inlet pipe, and the other three ends of which are liquid outlet pipes. The lower ends of the liquid outlet pipes are fixedly sealed and connected with a lower cylinder, and the lower end of the lower cylinder is inclined toward the flow direction of the medium in the liquid outlet pipe on one side. The lower end of the middle part of the four-way pipe is concentrically rotated and sealed and connected with a turntable, a sliding box is slidingly provided on the upper end of the turntable, a valve seat is fixed on the upper end of the sliding box, a support block is fixed on one side of the sliding box, an inner rod and a rotating rod are rotatably provided on the turntable, the inner rod and the rotating rod are parallel, the sliding direction of the sliding box, the axial direction of the inner rod and the radial direction of the turntable are parallel, the inner rod and the rotating rod are transmission-connected, the middle part of the inner rod is a threaded section, the two sides of the inner rod are smooth sections, the inner rod passes through the support block, the support block can be threadedly connected with the threaded section of the inner rod, and a rotating rod is provided in the sliding box. The winding roller is connected to the rotating rod through a transmission assembly. When the support block is located outside the light section of the inner rod, the rotating rod can drive the winding roller to rotate through the transmission assembly. A channel is opened on the valve seat. One end of the pull rope passes through the channel and is fixedly connected to the winding roller. A valve ball is fixed to the other end of the pull rope. The valve ball is located in one of the lower cylinders. The rotation of the winding roller can wind up the pull rope and move the valve ball out of the lower cylinder where it is located. After the valve ball is in the liquid outlet pipe, the liquid outlet pipe can be sealed. After the valve ball is in the liquid inlet pipe, the liquid inlet pipe can be sealed. A driving assembly is provided on the turntable, and the driving assembly is connected to the inner rod. An elastic assembly is slidingly sleeved on the light section of the inner rod. The support block is located between the two elastic assemblies. When the support block is located outside the light section of the inner rod, it can compress the elastic assembly on one side.

[0007] Specifically, an inclined rod is fixed in each of the liquid outlet pipes, the lower tube is located between the inclined rod and the turntable on one side thereof, and the length direction of the inclined rod is parallel to the axial direction of the lower tube on one side thereof.

[0008] Specifically, a slide groove is provided at the upper end of the turntable, the center of the slide groove coincides with the center of the turntable, and the lower end of the sliding box is slidably arranged in the slide groove.

[0009] Specifically, sprockets are concentrically fixed to one end of the inner rod and one end of the rotating rod, the two sprockets are located on the same side, and the two sprockets are connected by a chain transmission.

[0010] Specifically, the transmission assembly includes a worm rotatably connected to the sliding box, a worm wheel is concentrically fixed on the roller, the worm wheel is engaged with the worm, a first gear is concentrically fixed to one end of the worm, and a second gear is concentrically fixed on both sides of the rotating rod, and the first gear is engaged with the second gear on one side of it.

[0011] Specifically, a liquid groove is provided on the inner wall of the lower tube, and when the valve ball enters the lower tube, the liquid in the lower tube can be discharged through the liquid groove.

[0012] Specifically, the drive assembly includes a rotating shaft that is sealed and rotatably connected to the turntable, the lower end of the rotating shaft extends to the bottom of the turntable, a second bevel gear is concentrically fixed to the upper end of the rotating shaft, a first bevel gear is concentrically fixed to the inner rod, the first bevel gear is meshed with the second bevel gear, and a rotating block is concentrically fixed to the lower end of the rotating shaft.

[0013] Specifically, the turntable is provided with a positioning assembly, which includes a fixed plate fixedly connected to the turntable, a limit rod slidably provided on the fixed plate, the limit rod is perpendicular to the turntable, the limit rod passes through the fixed plate, a pull plate is fixed to the lower end of the limit rod, the pull plate and the fixed plate are connected by a tension spring, and a limit hole corresponding to the liquid inlet pipe and the liquid outlet pipe is opened at the lower end of the four-way, the axis of the limit rod passes through the axis of the limit hole along the motion trajectory of the rotation of the turntable, and the limit rod is inserted into the limit hole on one side thereof.

[0014] Specifically, the elastic component includes a slip ring slidably sleeved on the inner rod, and the slip ring is fixedly connected to the turntable through a spring.

[0015] Before installing the four-way valve, select a liquid outlet pipe so that the valve ball is located in the lower cylinder at the lower end of the selected liquid outlet pipe. At this time, the pull rope is not wound by the roller; the sliding box and the support block are close to the selected liquid outlet pipe, and the support block is located on the outside of the inner rod light section on one side of it. The support block compresses the elastic component on one side of it, and the support block is rotatably connected to the inner rod light section on one side, and the transmission component can drive the roller to rotate; fix the four-way valve, and make the main water pipe and the liquid inlet pipe fixedly and sealedly connected, so that the three branch water pipes are respectively fixedly and sealedly connected to the three liquid outlet pipes; the water discharged from the liquid inlet pipe can enter the three liquid outlet pipes respectively, and at this time, the valve ball does not block the liquid outlet pipes.

[0016] 1. The integrated design of the turntable, sliding box, and valve ball allows for independent blocking of individual outlet pipes, enabling maintenance without shutting down the entire system. The valve ball is precisely positioned by the pull cord and the turntable, allowing targeted blocking of the target outlet pipe. Other outlet pipes remain open, significantly minimizing the impact of maintenance on system operation.

[0017] 2. The threaded and smooth sections of the inner rod are combined with elastic components to provide buffering and reset functions, ensuring uniform force when the support block and threaded section engage, preventing mechanical jamming. The worm, worm gear, and shift gear transmission design achieves controlled rotation of the winding roller, ensuring that the valve ball accurately disengages the lower drum during rope rewinding and automatically resets to the target position during unwinding.

[0018] 3. When the valve ball enters the lower barrel, the liquid tank allows the liquid to drain to prevent pressure buildup. Once the valve ball enters the outlet pipe, it is completely sealed, ensuring reliable sealing performance. A diagonal rod in the outlet pipe is parallel to the axial direction of the lower barrel, guiding the valve ball accurately into the lower barrel and reducing positioning deviation caused by water impact.

[0019] 4. The limit rod and the limit hole cooperate with each other to realize the quick positioning and locking of the turntable through the tension spring to prevent the turntable from accidentally shifting during maintenance.

[0020] 5. By rotating the inner rod through a rotating block, shaft, first bevel gear, and second bevel gear, the operator only needs to rotate a single component to complete the valve ball positioning, blocking, and unblocking processes. After maintenance is completed, the pull rope is released, and the valve ball automatically returns to the lower barrel under the push of water and the guidance of the inclined rod, restoring the valve flow and restoring the valve flow, reducing manual intervention. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 Schematic diagram of the present invention.

[0022] Figure 2 This is a schematic diagram of the turntable at the lower end of the four-way.

[0023] Figure 3 This is an enlarged view of the turntable at the lower end of the four-way.

[0024] Figure 4 This is a cross-sectional view of the four-way.

[0025] Figure 5 It is a cross-sectional view of the connection between the liquid outlet pipe and the lower cylinder.

[0026] Figure 6 A cross-sectional view of the turntable.

[0027] Figure 7 Schematic diagram of the cooperation between the sliding box and the turntable.

[0028] Figure 8 Schematic diagram of the transmission connection between the inner rod and the rotating rod.

[0029] Figure 9 A schematic diagram of the drive components.

[0030] Figure 10 This is a schematic diagram of the first gear meshing with the second gear on one side.

[0031] Figure 11 Schematic diagram of the connection between the valve seat and the sliding box.

[0032] Figure 12 A cross-sectional view of the sliding box.

[0033] Figure 13 This is a schematic diagram of the valve ball contacting the valve seat after the pull rope is reeled in.

[0034] Figure 14 This is a schematic diagram of the valve seat pushing the valve ball into the liquid outlet pipe on the front side.

[0035] The names of the parts in the accompanying drawings are: 1. Cross-connection; 2. Liquid inlet pipe; 3. Liquid outlet pipe; 4. Lower cylinder; 5. Liquid tank; 6. Inclined rod; 7. Valve ball; 8. Turntable; 9. Sliding box; 10. Valve seat; 11. Roller; 12. Pull rope; 13. Worm gear; 14. Worm; 15. First gear; 16. Support block; 17. Inner rod; 18. Slip ring; 19. Spring; 20. Turning rod; 21. Second gear; 22. Sprocket; 23. Chain; 24. First bevel gear; 25. Second bevel gear; 26. Rotating shaft; 27. Rotating block; 28. Limiting hole; 29. Fixing plate; 30. Limiting rod; 31. Pull plate; 32. Tension spring. DETAILED DESCRIPTION

[0036] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0037] like Figures 1-14 As shown, a fire-fighting pipe fitting includes a four-way pipe 1, one end of the four-way pipe 1 is a liquid inlet pipe 2, and the other three ends of the four-way pipe 1 are liquid outlet pipes 3. The lower ends of the liquid outlet pipes 3 are fixedly sealed and connected to a lower tube 4, and the lower end of the lower tube 4 is inclined toward the flow direction of the medium in the liquid outlet pipe 3 on one side. The lower end of the middle part of the four-way pipe 1 is concentrically rotated and sealed with a turntable 8.

[0038] An inclined rod 6 is fixed in each of the liquid outlet pipes 3 , and the lower cylinder 4 is located between the inclined rod 6 and the turntable 8 on one side thereof. The length direction of the inclined rod 6 is parallel to the axial direction of the lower cylinder 4 on one side thereof.

[0039] The upper end of the rotating disk 8 is slidably provided with a sliding box 9. Specifically, the upper end of the rotating disk 8 is provided with a chute, the center of the chute coincides with the center of the rotating disk 8, and the lower end of the sliding box 9 is slidably provided in the chute.

[0040] A valve seat 10 is fixed to the upper end of the sliding box 9, a support block 16 is fixed to one side of the sliding box 9, an inner rod 17 and a rotating rod 20 are rotatably provided on the turntable 8, the inner rod 17 and the rotating rod 20 are parallel, and the sliding direction of the sliding box 9, the axial direction of the inner rod 17 and the radial direction of the turntable 8 are parallel.

[0041] The inner rod 17 is connected to the rotating rod 20 by transmission. Specifically, one end of the inner rod 17 and one end of the rotating rod 20 are both concentrically fixed with a sprocket 22, and the two sprockets 22 are located on the same side, and the two sprockets 22 are connected by a chain 23.

[0042] The middle part of the inner rod 17 is a threaded section, and the two sides of the inner rod 17 are smooth sections. The inner rod 17 passes through the support block 16, and the support block 16 can be threadedly connected with the threaded section of the inner rod 17.

[0043] A roller 11 is rotatably provided in the sliding box 9 , and the roller 11 is connected to the rotating rod 20 through a transmission assembly.

[0044] The transmission assembly includes a worm 14 rotatably connected to the sliding box 9. A worm gear 13 is concentrically fixed to the winding roller 11, meshing with the worm 14. A first gear 15 is concentrically fixed to one end of the worm 14. Second gears 21 are concentrically fixed to each side of a rotating rod 20, meshing with the first gear 15 on one side of the second gear 21. When the support block 16 is positioned outside the optical section of the inner rod 17, the rotating rod 20 can drive the winding roller 11 through the transmission assembly.

[0045] A channel is opened on the valve seat 10, and one end of the pull rope 12 passes through the channel and is fixedly connected to the roller 11. The other end of the pull rope 12 is fixed with the valve ball 7, and the valve ball 7 is located in one of the lower tubes 4. The rotation of the roller 11 can wind up the pull rope 12 and move the valve ball 7 out of the lower tube 4 where it is located.

[0046] A liquid groove 5 is provided on the inner wall of the lower tube 4 . When the valve ball 7 enters the lower tube 4 , the liquid in the lower tube 4 can be discharged through the liquid groove 5 .

[0047] When the valve ball 7 is located in the liquid outlet pipe 3 , it can block the liquid outlet pipe 3 . When the valve ball 7 is located in the liquid inlet pipe 2 , it can block the liquid inlet pipe 2 .

[0048] A driving assembly is provided on the turntable 8 , and the driving assembly is connected to the inner rod 17 .

[0049] The driving assembly includes a rotating shaft 26 which is rotatably sealed with the turntable 8. The lower end of the rotating shaft 26 extends to the bottom of the turntable 8. A second bevel gear 25 is concentrically fixed to the upper end of the rotating shaft 26. A first bevel gear 24 is concentrically fixed to the inner rod 17. The first bevel gear 24 is meshed with the second bevel gear 25. A rotating block 27 is concentrically fixed to the lower end of the rotating shaft 26.

[0050] The optical segments of the inner rod 17 are all slidably sleeved with elastic components, and the support block 16 is located between the two elastic components. When the support block 16 is located outside the optical segment of the inner rod 17, it can compress the elastic component on one side thereof.

[0051] The elastic component includes a slip ring 18 that is slidably sleeved on the inner rod 17 , and the slip ring 18 is fixedly connected to the turntable 8 via a spring 19 .

[0052] A positioning assembly is provided on the turntable 8, which includes a fixed plate 29 fixedly connected to the turntable 8, a limit rod 30 slidingly provided on the fixed plate 29, the limit rod 30 is perpendicular to the turntable 8, the limit rod 30 passes through the fixed plate 29, a pull plate 31 is fixed to the lower end of the limit rod 30, the pull plate 31 is connected to the fixed plate 29 by a tension spring 32, and a limit hole 28 corresponding to the liquid inlet pipe 2 and the liquid outlet pipe 3 is opened at the lower end of the four-way 1, and the axis of the limit rod 30 passes through the axis of the limit hole 28 along the motion trajectory of the rotation of the turntable 8, and the limit rod 30 is inserted into the limit hole 28 on one side thereof.

[0053] Before installing the four-way valve 1, select a liquid outlet pipe 3 so that the valve ball 7 is located in the lower tube 4 at the lower end of the selected liquid outlet pipe 3. At this time, the pull rope 12 is not wound by the roller 11. The sliding box 9 and the support block 16 are close to the selected liquid outlet pipe 3. The support block 16 is located on the outside of the light section of the inner rod 17 on one side. The support block 16 compresses the elastic component on one side. The support block 16 is rotatably connected to the light section of the inner rod 17 on one side, and the transmission component can drive the roller 11 to rotate. Fix the four-way valve 1 and make the main water pipe and the liquid inlet pipe 2 fixedly and sealedly connected, so that the three branch water pipes are fixedly and sealedly connected to the three liquid outlet pipes 3 respectively. The water discharged from the liquid inlet pipe 2 can enter the three liquid outlet pipes 3 respectively. At this time, the valve ball 7 does not block the liquid outlet pipe 3.

[0054] like Figure 5 、 Figure 6 and Figure 7 As shown, the valve ball 7 is located in the left lower tube 4. When the left liquid outlet pipe 3 needs to be repaired, the rotating block 27 is rotated, and the rotating block 27 rotates the inner rod 17 through the rotating shaft 26, the first bevel gear 24 and the second bevel gear 25, and the inner rod 17 drives the rotating rod 20 to rotate. Because the support block 16 compresses the elastic component on the left side, the elastic component on the left side can apply a rightward thrust to the support block 16. When the inner rod 17 rotates, the support block 16 can effectively be threadedly connected to the threaded section of the inner rod 17. After the support block 16 and the threaded section of the inner rod 17 are threadedly connected, the sliding box 9, the support block 16, and the valve seat 10 move to the right. After the sliding box 9, the support block 16, and the valve seat 10 move to the right, the first gear 15 and the second gear 21 on the left side are separated. When the valve seat 10 moves to the right, the pull rope 12 can pull the valve ball 7 to the right, thereby pulling the valve ball 7 out of the left lower tube 4. When the valve seat 10 is located in the left liquid outlet pipe 3, the valve seat 10 blocks the left liquid outlet pipe 3. At this time, the right liquid outlet pipe 3 and the front liquid outlet pipe 3 remain unobstructed.

[0055] like Figure 5 、 Figure 6 、 Figure 7 、 Figure 13 and Figure 14As shown, when the front liquid outlet pipe 3 needs to be sealed for maintenance, the valve ball 7 is pulled out from the left lower tube 4. When the valve ball 7 enters the left liquid outlet pipe 3, the inner rod 17 continues to rotate. When the support block 16 is located outside the light segment on the right side of the inner rod 17, the support block 16 squeezes the elastic component on the right side. At this time, the first gear 15 is engaged with the second gear 21 on the right side, and the inner rod 17 continues to rotate. The inner rod 17 drives the rotating rod 20 to rotate. When the rotating rod 20 rotates, the winding roller 11 is driven to rotate through the transmission assembly. When the winding roller 11 rotates, it can wind the pull rope 12. When the valve ball 7 contacts the valve seat 10, the rotation of the inner rod 17 stops. Then, the pull plate 31 and the limiting rod 30 are pulled downward. After the limiting rod 30 is released from the limiting hole 28 on one side, the tension spring 32 is stretched, and the rotary disk 8 is rotated so that the valve ball 7 is opposite the front liquid outlet pipe 3. The limiting rod 30 is then released. Under the elastic force of the tension spring 32, the limiting rod 30 moves upward and is inserted into the corresponding limiting hole 28. At this point, the two elastic components are arranged in front and behind, and the valve ball 7 is located in front of the valve seat 10.

[0056] Then the inner rod 17 is rotated, and the support block 16 is threadedly connected to the threaded section of the inner rod 17. The sliding box 9, the support block 16, the valve seat 10 and the valve ball 7 move forward, and the first gear 15 is separated from the second gear 21 at the rear. When the support block 16 is located outside the optical section at the front of the inner rod 17, the support block 16 presses the elastic component at the front, and the first gear 15 is engaged with the second gear 21 at the front. Figure 14 As shown, the valve ball 7 enters the front liquid outlet pipe 3. At this point, the valve ball 7 blocks the front liquid outlet pipe 3, and the front liquid outlet pipe 3 can then be repaired. After the front liquid outlet pipe 3 is repaired, the inner rod 17 rotates. Since the second gear 21 in front of the first gear 15 is engaged, the inner rod 17 drives the rotating rod 20 to rotate, and the meshed first gear 15 and second gear 21 rotate, the roller 11 rotates and releases the pull rope 12. At the same time, under the action of the water flow, the valve ball 7 can move in the front liquid outlet pipe 3. When the pull rope 12 is unwound, the valve ball 7 enters the front lower barrel 4. By providing the inclined rod 6, the inclined rod 6 can guide the valve ball 7, making it easier for the valve ball 7 to enter the lower barrel 4.

[0057] By reeling in the pull cord 12, the valve ball 7 in the lower barrel 4 can be pulled into the liquid outlet pipe 3 and sealed, facilitating maintenance of the liquid outlet pipe 3. After the valve ball 7 contacts the valve seat 10, the turntable 8 can rotate the valve seat 10 and the valve ball 7 so that the valve ball 7 aligns with the liquid outlet pipe 3 to be sealed. During the rotation of the inner rod 17, the valve ball 7 can first be brought close to the liquid outlet pipe 3 to be sealed. After the valve ball 7 enters the liquid outlet pipe 3 to be sealed, the liquid outlet pipe 3 to be sealed is closed, and maintenance can then be carried out. After the maintenance is completed, the pull cord 12 is unwound, and the valve ball 7 can enter the lower barrel 4 connected to the repaired liquid outlet pipe 3, thereby opening the repaired liquid outlet pipe 3.

[0058] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A fire-fighting pipe fitting, comprising a four-way pipe (1), one end of the four-way pipe (1) being a liquid inlet pipe (2), and the other three ends of the four-way pipe (1) being liquid outlet pipes (3), characterized in that: The lower end of the liquid outlet pipe (3) is fixedly sealed and connected to the lower cylinder (4). The lower end of the lower cylinder (4) is inclined toward the flow direction of the medium in the liquid outlet pipe (3) on one side. The lower end of the middle part of the four-way (1) is coaxially rotatably sealed and connected to a turntable (8). A sliding box (9) is slidably provided on the upper end of the turntable (8). A valve seat (10) is fixed on the upper end of the sliding box (9). A support block (16) is fixed on one side of the sliding box (9). An inner rod (17) and a rotating rod (20) are rotatably provided on the turntable (8). The inner rod (17) The inner rod (17) is parallel to the rotating rod (20), the sliding direction of the sliding box (9), the axial direction of the inner rod (17) and the radial direction of the rotating disk (8) are parallel, the inner rod (17) and the rotating rod (20) are transmission connected, the middle part of the inner rod (17) is a threaded section, the two sides of the inner rod (17) are light sections, the inner rod (17) passes through the support block (16), the support block (16) can be threadedly connected with the threaded section of the inner rod (17), a roller (11) is rotatably provided in the sliding box (9), and the roller (11) is connected to the rotating rod (20) The valve seat (10) is provided with a passage, one end of the pull rope (12) passes through the passage and is fixedly connected to the roller (11), and the other end of the pull rope (12) is fixed with a valve ball (7), which is located in one of the lower cylinders (4). The roller (11) rotates to wind up the pull rope (12) and make the valve ball (7) move out of the lower cylinder (4). The valve ball (7) is moved out of the cylinder (4), and the valve ball (7) is located in the liquid outlet pipe (3) to block the liquid outlet pipe (3), and the valve ball (7) is located in the liquid inlet pipe (2) to block the liquid inlet pipe (2); a driving assembly is provided on the turntable (8), and the driving assembly is connected to the inner rod (17). The optical section of the inner rod (17) is slidably sleeved with an elastic assembly, and the support block (16) is located between the two elastic assemblies. When the support block (16) is located outside the optical section of the inner rod (17), it can compress the elastic assembly on one side thereof.

2. A fire protection pipe fitting according to claim 1, characterized in that: An inclined rod (6) is fixed in each of the liquid outlet pipes (3), and the lower cylinder (4) is located between the inclined rod (6) and the rotating disk (8) on one side thereof. The length direction of the inclined rod (6) is parallel to the axial direction of the lower cylinder (4) on one side thereof.

3. A fire protection pipe fitting according to claim 1, characterized in that: A slide groove is provided at the upper end of the turntable (8), the center of the slide groove coincides with the center of the turntable (8), and the lower end of the sliding box (9) is slidably arranged in the slide groove.

4. A fire protection pipe fitting according to claim 1, characterized in that: One end of the inner rod (17) and one end of the rotating rod (20) are both concentrically fixed with a sprocket (22), the two sprockets (22) are located on the same side, and the two sprockets (22) are connected by a chain (23).

5. The fire protection pipe fitting according to claim 1, characterized in that: The transmission assembly includes a worm (14) rotatably connected to the sliding box (9), a worm wheel (13) is coaxially fixed on the winding roller (11), the worm wheel (13) is meshed with the worm (14), a first shift gear (15) is concentrically fixed to one end of the worm (14), and second shift gears (21) are concentrically fixed on both sides of the rotating rod (20), and the first shift gear (15) is meshed with the second shift gear (21) on one side thereof.

6. A fire protection pipe fitting according to claim 1, characterized in that: A liquid groove (5) is provided on the inner wall of the lower cylinder (4). When the valve ball (7) enters the lower cylinder (4), the liquid in the lower cylinder (4) can be discharged through the liquid groove (5).

7. The fire protection pipe fitting according to claim 1, characterized in that: The driving assembly comprises a rotating shaft (26) connected to the turntable (8) in a rotationally sealed manner, the lower end of the rotating shaft (26) extending below the turntable (8), a second bevel gear (25) being concentrically fixed to the upper end of the rotating shaft (26), a first bevel gear (24) being concentrically fixed to the inner rod (17), the first bevel gear (24) being meshed with the second bevel gear (25), and a rotating block (27) being concentrically fixed to the lower end of the rotating shaft (26).

8. The fire protection pipe fitting according to claim 1, characterized in that: The turntable (8) is provided with a positioning assembly, which includes a fixed plate (29) fixedly connected to the turntable (8), a limiting rod (30) is slidably provided on the fixed plate (29), the limiting rod (30) is perpendicular to the turntable (8), the limiting rod (30) passes through the fixed plate (29), a pulling plate (31) is fixed to the lower end of the limiting rod (30), the pulling plate (31) is connected to the fixed plate (29) through a tension spring (32), a limiting hole (28) corresponding to the liquid inlet pipe (2) and the liquid outlet pipe (3) is opened at the lower end of the four-way (1), the axis of the limiting rod (30) passes through the axis of the limiting hole (28) along the motion trajectory of the turntable (8), and the limiting rod (30) is inserted into the limiting hole (28) on one side thereof.

9. The fire protection pipe fitting according to claim 1, characterized in that: The elastic component comprises a slip ring (18) which is slidably sleeved on the inner rod (17); the slip ring (18) is fixedly connected to the rotating disk (8) via a spring (19).

10. A method for installing a fire protection pipe according to claim 1, characterized in that: Before installing the four-way valve (1), a liquid outlet pipe (3) is selected so that the valve ball (7) is located in the lower cylinder (4) at the lower end of the selected liquid outlet pipe (3). At this time, the pull rope (12) is not wound by the roller (11); the sliding box (9) and the support block (16) are close to the selected liquid outlet pipe (3). The support block (16) is located outside the light section of the inner rod (17) on one side thereof. The support block (16) compresses the elastic component on one side thereof. The support block (16) is rotatably connected to the light section of the inner rod (17) on one side thereof. The transmission component can drive the roller (11) to rotate; the four-way valve (1) is fixed, and the main water pipe is fixedly sealed and connected with the liquid inlet pipe (2), so that the three branch water pipes are fixedly sealed and connected with the three liquid outlet pipes (3) respectively; the water discharged from the liquid inlet pipe (2) can enter the three liquid outlet pipes (3) respectively. At this time, the valve ball (7) does not block the liquid outlet pipes (3).

Images