A ground pump conduit damping steering joint system and use method

Abstract

The present invention relates to a conduit steering technology for a concrete pump, specifically a system and a method for using the system that can effectively reduce the vibration of the conduit caused by the outward impulse of the conveying fluid along the pumping direction at the turning point of the ground pump conduit. It includes two groups of straight section main conduits, each of which is equipped with a conduit telescopic elastic damping device 1, and two groups of conduit pipes away from the straight section main conduits are equipped with a Y-shaped connecting joint at one end, and a conduit rotating device is installed at the end of the connecting joint. The two groups of conduit rotating devices on the corresponding sides are equipped with a U-shaped conduit shock-absorbing mobile mechanism; each U-shaped conduit shock-absorbing mobile mechanism includes a conduit telescopic elastic damping device 2 and a bend installed at the two ends of the conduit telescopic elastic damping device, and the bend is connected to the corresponding conduit rotating device. It can greatly reduce the vibration of the ground pump conduit itself from being transmitted to the building structure, and reduce the risk of cracking and water seepage in the building structure.

Description

Technical Field

[0001] The present invention relates to a concrete pump conduit steering technology, specifically a system and a method for using the system that can effectively reduce vibration of the conduit caused by the outward impulse of the conveyed fluid along the pumping direction at the turning point of the concrete pump conduit. Background Art

[0002] Due to the promotion and application of piston concrete pumps, the construction of high-rise building structures is complicated due to the construction site environment. The concrete pumping conduit must inevitably avoid obstacles and use elbows to turn. When the conduit turns to the elbow, the flow direction of the concrete in the conduit suddenly changes, causing the momentum direction of the concrete pumped inside to suddenly change. The sudden momentum will cause the elbow conduit to receive a reaction impulse, causing vibration at the elbow. The vibration frequency is the same as the pumping frequency of the piston pump, and the vibration will be transmitted along the conduit to cause the vertical or horizontal straight conduit to vibrate along the axis normal direction. Normal vibration is more likely to cause resonance effect in the conduit than axial vibration, especially when the elbow is directly connected to the vertical conduit, resulting in an increase in the normal amplitude of the conduit, so that the vertical conduit will collide violently with the building structure when passing through the floor structure plate, damaging the structure, causing quality risks, and even safety risks such as pipe burst and joint disengagement. Summary of the Invention

[0003] The purpose of the present invention is to solve the deficiencies in the prior art. Therefore, a system and method of use are proposed that can effectively reduce the vibration of the pipe body caused by the outward impulse of the conveyed fluid along the pumping direction at the bend of the ground pump pipe, so as to effectively solve the above technical problems.

[0004] In order to achieve the above object, the present invention adopts the following technical solutions:

[0005] A ground pump conduit damping steering joint system comprises two sets of straight main conduits, each of which is equipped with a conduit telescopic elastic damping device; one end of each set of the two conduits away from the straight main conduits is equipped with a Y-shaped connecting joint; the end of the connecting joint is equipped with a conduit rotating device; and a U-shaped conduit damping motor mechanism is commonly installed on the two sets of conduit rotating devices on the corresponding sides;

[0006] Each U-shaped conduit shock-absorbing motor mechanism includes two conduit telescopic elastic damping devices and bent pipes installed at two ends of the conduit telescopic elastic damping devices, and the bent pipes are connected to the corresponding conduit rotating devices.

[0007] In a further preferred embodiment, the catheter telescopic elastic damping device 1 and the catheter telescopic elastic damping device 2 have the same structure and both include a piston catheter and a piston catheter sleeve. The piston catheter is installed at one end of the connecting joint or one end of the bent pipe through a pipe clamp. The piston catheter sleeve is installed at the end of the straight section main catheter or the end of the bent pipe and forms a piston cylinder cavity with the corresponding pipe wall. A piston cylinder cover is mounted on the outer side of the piston catheter and the piston cylinder cover is fixed to the piston catheter sleeve through a flange thread. A spring end supporting plate and a spring 1 mounted on the piston catheter between the piston cylinder cover and the spring end supporting plate are installed at the end of the piston sleeve. A spring 2 is installed in the piston cylinder cavity and the end of the spring 2 abuts against the spring end supporting plate. A sealing ring 1 is installed between the piston catheter and the outer wall of the internal pipe of the piston cylinder cavity, and between the spring end supporting plate and the inner wall of the piston catheter sleeve.

[0008] In a further preferred embodiment, an air damping throttle hole is provided on the spring end support plate.

[0009] According to a further preferred embodiment, the catheter rotating device includes a rotating catheter installed on the end of the connecting joint through a pipe clamp and a fixed sleeve installed on the end of the bent pipe, the end of the rotating catheter is provided with a supporting step, and the fixed sleeve is provided with a step structure compatible with the supporting step, a fixed roller bearing sleeve is installed on the outside of the rotating catheter, a roller is installed between the fixed roller bearing sleeve and the rotating catheter, the fixed roller bearing sleeve and the fixed sleeve are installed by flange bolts, and a second sealing ring is installed between the supporting step and the step structure, and between the fixed roller bearing sleeve and the rotating catheter.

[0010] In a further preferred embodiment, a flange limiter is installed inside the fixed sleeve and is located on the supporting step.

[0011] The steps are as follows:

[0012] First: Assemble the catheter telescopic elastic damping device 1 and the catheter telescopic elastic damping device 2:

[0013] A second spring is inserted into the piston guide sleeve along the axial direction, and then the piston guide is inserted. The piston guide spring end bearing plate maintains a certain elastic contact with the springs at both ends. After the piston guide is inserted, the first spring is inserted into the axial direction of the piston guide. Finally, the piston cylinder cover is installed. The piston cylinder cover is rigidly sealed with the outer wall of the piston guide sleeve through a flange thread. A rubber sealing ring is added to the outer edge of the spring end bearing plate tightly against the inner wall of the piston guide sleeve. The piston guide is in a sealed state when it moves axially in the piston guide sleeve. An air damping throttle hole is opened on the spring end bearing plate.

[0014] Next: Assemble the connecting joint and the straight main pipe:

[0015] The straight section main conduit is installed at the corresponding end of the connecting joint through the piston conduit of the conduit telescopic elastic damping device 1 through the pipe clamp;

[0016] Next: Assemble the U-shaped guide tube shock absorption mechanism:

[0017] The second catheter telescopic elastic damping device is respectively installed on the corresponding elbow end through its own piston catheter and piston catheter sleeve;

[0018] Again: Assemble the catheter rotation device:

[0019] Install the flange limiter on the rotating conduit joint end and connect them rigidly and sealably. Then insert the rotating conduit joint end into the fixed sleeve end. A second sealing ring is provided at a position where the outer wall of the rotating conduit joint end and the inner wall of the fixed sleeve end are in close contact. The fixed ball bearing sleeve is rigidly and sealably connected to the fixed sleeve through the flange bolts. A second rubber sealing ring is provided in the gap between the fixed ball bearing sleeve and the outer wall of the rotating conduit to ensure that debris does not enter the bearing.

[0020] Finally: Catheter rotation device and connecting joint assembly:

[0021] The guide tube is connected to the corresponding ends of the connecting joint through the pipe clamp by rotating the guide tube to form an O-type shock-absorbing mobile mechanism.

[0022] Compared with the prior art, the present invention has the following beneficial effects:

[0023] The two duct telescopic elastic damping devices are connected to the duct steering devices at both ends via elbows at both ends, forming an integrated U-shaped duct shock-absorbing maneuverable mechanism. The two duct shock-absorbing maneuvers are symmetrically and rigidly connected to the ends of the connecting joint via pipe joints and pipe clamps, forming an integrated O-shaped shock-absorbing maneuverable mechanism. Due to its symmetrical arrangement, the impacts on the left and right curved sections during concrete pumping are equal in magnitude and opposite in direction, thereby internally canceling out the impacts. This ensures that the duct bending and steering functions as a replacement for traditional elbow joints. The lower end of connecting joint 1 is rigidly connected to the straight main duct in the inlet direction, equipped with duct telescopic elastic damping device 1, via the pipe joint and pipe clamp. The upper end of connecting joint 2 is rigidly connected to the vertical main duct in the outlet direction, equipped with duct telescopic elastic damping device 1, via the pipe joint and pipe clamp. This constitutes a ground pump duct shock-absorbing and steering system that utilizes horizontal input and vertical upward delivery. The horizontal input duct should be fixedly connected to the ground via a duct bracket to ensure its stability, while the vertical output duct should be effectively fixedly connected to the building structure to ensure its stability.

[0024] The catheter expansion and contraction elastic damping device consists of a piston catheter, a piston catheter sleeve, a first sealing ring, a piston cylinder cover, a piston cylinder chamber, an air damping orifice, and a spring. First, spring two is inserted axially into the piston catheter sleeve, followed by the piston catheter. The piston catheter spring end bearing plate maintains a certain elastic contact with the springs at both ends. After the piston catheter is inserted, spring one is inserted axially into the piston catheter. Finally, the piston cylinder cover is installed. The piston cylinder cover is rigidly sealed to the outer wall of the piston catheter sleeve via a flange thread. A rubber sealing ring is added to the outer edge of the spring end bearing plate, which abuts against the inner wall of the piston catheter sleeve and ensures that the piston catheter remains sealed during axial movement within the piston cylinder sleeve. An air damping orifice is provided on the spring end bearing plate to reduce the speed of the piston catheter's axial expansion and contraction. During the concrete pumping process, the piston catheter undergoes axial displacement within the piston catheter sleeve due to impact. The spring end bearing plate compresses spring one or spring two, which limits further displacement of the piston catheter. Springs one and two also serve to reset the piston catheter after compression. The air compressed at one end of the piston cylinder cavity will enter the expanded end of the piston cylinder cavity through the air damping throttle hole on the spring end support plate, and the air damping throttle hole will limit the speed of air circulation, thereby slowing down the displacement speed of the piston guide tube and reducing the axial impact of the guide tube.

[0025] The conduit rotation device consists of a rotating conduit, a fixed sleeve, a fixed roller bearing sleeve, a flange stopper, a sealing ring, and flange bolts. First, the flange stopper is installed at the rotating conduit joint end and rigidly sealed. This device ensures that the rotating conduit does not become axially displaced or dislocated due to pressure during concrete pumping. The rotating conduit joint end is then inserted into the sleeve end of the fixed sleeve. A second sealing ring is installed where the outer wall of the rotating conduit joint end and the inner wall of the fixed sleeve sleeve end are in close contact, preventing leakage during concrete pumping. The ball bearing on the outer wall of the rotating sleeve is rigidly sealed to the flange of the fixed sleeve via flange bolts. A rubber sealing ring is installed in the gap between the ball bearing sleeve and the outer wall of the rotating conduit to prevent debris from entering the bearing.

[0026] The present invention provides a ground pump conduit damping steering joint system. The innovation lies in: adding a telescopic damping and axial rotation device to the conduit body, and utilizing a combination of a conduit telescopic elastic damping device and a conduit rotation device to form a ground pump conduit steering device that can replace the traditional ground pump conduit elbow. During the concrete delivery process, the device limits the vibration at the pump pipe turning point and converts it into telescopic displacement inside the conduit telescopic damping device. The air damping device and the spring can effectively consume the vibration transmitted from the conduit and effectively limit the speed of displacement caused by the vibration, thereby reducing the vibration frequency and avoiding the resonance effect. This can greatly reduce the transmission of the ground pump conduit's own vibration to the building structure, reducing the risk of cracking and water seepage in the building structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 This is a front view of the device;

[0028] Figure 2 It is the left view of the device;

[0029] Figure 3 is a schematic diagram of vibration displacement;

[0030] Figure 4 Schematic diagram of the cross section of the catheter telescopic elastic damping device;

[0031] Figure 5 It is a partial view of the catheter telescopic elastic damping device;

[0032] Figure 6 is a cross-sectional schematic diagram of the catheter rotation device;

[0033] Figure 7 A partial view of the catheter rotation device. DETAILED DESCRIPTION

[0034] 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.

[0035] Reference Figures 1 to 3 As shown, a ground pump conduit shock-absorbing steering joint system includes two groups of straight section main conduits 80, each of which is equipped with a conduit telescopic elastic damping device 10, and one end of each group of the two groups away from the straight section main conduits 80 is equipped with a Y-shaped connecting joint 60, and the end of the connecting joint 60 is equipped with a conduit rotating device 20, and the two groups of conduit rotating devices 20 on the corresponding sides are commonly equipped with a U-shaped conduit shock-absorbing motor mechanism 70.

[0036] Each U-shaped conduit shock-absorbing motor mechanism 70 includes a conduit telescopic elastic damping device 2 71 and a bent pipe 30 installed at the end of the conduit telescopic elastic damping device 2 71 , and the bent pipe 30 is connected to the corresponding conduit rotating device 20 .

[0037] like Figure 4 and Figure 5As shown, two conduit telescopic elastic damping devices 71 are connected to the conduit steering devices at both ends through the elbows 30 at both ends to form an integral U-shaped conduit shock-absorbing motorized mechanism 70. The two sets of conduit shock-absorbing motorized mechanisms 70 are symmetrically and rigidly connected to the ends of the connecting joint 60 through the pipe body joint and the pipe clamp 40 to form an integral O-shaped shock-absorbing motorized mechanism. Due to the symmetrical arrangement of this mechanism, the impacts on the left and right curved sections during concrete pumping can be equal in magnitude and opposite in direction, thereby offsetting each other internally, and can ensure that the conduit bending and steering replaces the function of traditional elbow joints. The lower end of the connecting joint 601 is rigidly connected to the straight section main conduit 80 in the direction of the input port with the conduit telescopic elastic damping device 10 through the pipe body joint and the pipe clamp 40. The upper end of the connecting joint 602 is rigidly connected to the vertical section main conduit in the direction of the output port with the conduit telescopic elastic damping device 10 through the pipe body joint and the pipe clamp 40, forming a ground pump conduit shock-absorbing steering system with horizontal section input and vertical upward transportation. The horizontal section input duct should be fixedly connected to the ground through a duct bracket to ensure the stability of the horizontal section duct, and the vertical section output duct should be effectively fixedly connected to the building structure to ensure its stability.

[0038] The structure of the catheter telescopic elastic damping device 10 and the catheter telescopic elastic damping device 2 71 is the same, and both include a piston catheter 11 and a piston catheter sleeve 12. The piston catheter 11 is installed at one end of the connecting joint 60 or one end of the elbow 30 through the pipe clamp 40. The piston catheter sleeve 12 is installed at the end of the straight section main catheter 80 or the end of the elbow 30 and forms a piston cylinder cavity 15 with the corresponding pipe wall. The outer side of the piston catheter 11 is covered with a piston cylinder cover 14 and the piston cylinder cover 14 is fixed to the piston catheter sleeve 12 through a flange thread. The piston cylinder cover 14 and the piston cylinder cover 14 are fixed to the piston catheter sleeve 12. A sealing ring 13 is installed between the outer walls of the plug guide tube 11, and a spring end support plate 18 and a spring 17 mounted on the piston guide tube 11 between the piston cylinder cover 14 and the spring end support plate 18 are installed at the end of the piston guide tube 11. A spring 2 19 is installed in the piston cylinder cavity 15 and the end of the spring 2 19 abuts against the spring end support plate 18. A sealing ring 13 is installed between the piston guide tube 11 and the outer wall of the internal pipeline of the piston cylinder cavity 15, and between the spring end support plate 18 and the inner wall of the piston guide tube sleeve 12. An air damping throttle hole 16 is provided on the spring end support plate 18.

[0039] First, insert spring 2 19 axially into the piston guide tube sleeve 12, and then insert the piston guide tube 11. The spring end bearing plate 18 of the piston guide tube 11 maintains a certain elastic contact with the springs at both ends. After inserting the piston guide tube 11, insert spring 17 axially into the piston guide tube 11, and finally install the piston cylinder cover 14. The piston cylinder cover 14 is rigidly sealed with the outer wall of the piston guide tube sleeve 12 through a flange thread. A rubber sealing ring 13 is added to the outer edge of the spring end bearing plate 18 tightly against the inner wall of the piston guide tube sleeve 12, and can ensure that the piston guide tube 11 remains sealed when it moves axially in the piston cylinder sleeve. An air damping throttle hole 16 is opened on the spring end bearing plate 18 to reduce the axial telescopic displacement speed of the piston guide tube 11. During the concrete pumping process, the piston guide tube 11 undergoes axial displacement within the piston guide tube sleeve 12 due to impact. The spring end bearing plate 18 compresses spring 17 or spring 2 19, which restricts further displacement of the piston guide tube 11. Springs 17 and 19 also serve to reset the piston guide tube 11 after compression. The air compressed at one end of the piston tube chamber 15 enters the expanded end of the piston tube chamber 15 through the air damping orifice 16 on the spring end bearing plate 18. The air damping orifice 16 restricts the air flow rate, thereby slowing the displacement of the piston guide tube 11 and reducing axial impact on the guide tube.

[0040] like Figure 6 and Figure 7 As shown, the catheter rotating device 20 includes a rotating catheter 21 installed on the end of the connecting joint 60 through a pipe clamp 40 and a fixed sleeve 22 installed on the end of the elbow 30. The end of the rotating catheter 21 is provided with a supporting step, and the fixed sleeve 22 is provided with a step structure adapted to the supporting step. A fixed roller bearing sleeve 23 is installed on the outside of the rotating catheter 21, and a roller 24 is installed between the fixed roller bearing sleeve 23 and the rotating catheter 21. The fixed roller bearing sleeve 23 and the fixed sleeve 22 are installed by flange bolts 26. A sealing ring 25 is installed between the supporting step and the step structure, and between the fixed roller bearing sleeve 23 and the rotating catheter 21. A flange limiter 24 is installed inside the fixed sleeve 22 and is located on the supporting step.

[0041] First, the flange limiter 24 is installed at the joint end of the rotating conduit 21 and rigidly sealed. This device is used to ensure that the rotating conduit 21 will not be axially displaced or disconnected due to pressure during the concrete pumping process. Then the joint end of the rotating conduit 21 is inserted into the sleeve end of the fixed sleeve 22. A sealing ring 25 is provided at a position where the outer wall of the joint end of the rotating conduit 21 and the inner wall of the sleeve end of the fixed sleeve 22 are in close contact with each other to ensure that no leakage occurs during the concrete pumping process. The fixed ball bearing sleeve 23 is rigidly sealed with the flange of the fixed sleeve 22 by means of flange bolts 26. A rubber sealing ring 25 is provided in the gap between the fixed ball bearing sleeve 23 and the outer wall of the rotating conduit 21 to ensure that debris does not enter the bearing.

[0042] The steps for use are as follows:

[0043] First, assemble the catheter telescopic elastic damping device 10 and the catheter telescopic elastic damping device 2 71:

[0044] A spring 2 19 is axially inserted into the piston conduit sleeve 12, and then the piston conduit 11 is inserted. The spring end bearing plate 18 of the piston conduit 11 maintains a certain elastic contact with the springs at both ends. After the piston conduit 11 is inserted, the spring 17 is axially inserted into the piston conduit 11, and finally the piston cylinder cover 14 is installed. The piston cylinder cover 14 is rigidly sealed with the outer wall of the piston conduit sleeve 12 through a flange thread. A rubber sealing ring 13 is added to the outer edge of the spring end bearing plate 18, which is in close contact with the inner wall of the piston conduit sleeve 12. The piston conduit 11 is in a sealed state when it moves axially in the piston conduit sleeve 12, and an air damping throttle hole 16 is opened on the spring end bearing plate 18;

[0045] Next: Assemble the connecting joint 60 and the straight main conduit 80:

[0046] The straight section main conduit 8 is installed at the corresponding end of the connecting joint 60 through the piston conduit 11 of the conduit telescopic elastic damping device 10 through the pipe clamp 40;

[0047] Next: Assemble the U-shaped guide tube shock absorbing mechanism 70:

[0048] The second catheter telescopic elastic damping device 71 is respectively installed with the corresponding end of the elbow 30 through its own piston catheter 11 and the piston catheter sleeve 12;

[0049] Next: Assemble the catheter rotating device 20:

[0050] The flange stopper 24 is installed on the joint end of the rotating conduit 21 and rigidly sealed. Then, the joint end of the rotating conduit 21 is inserted into the sleeve end of the fixed sleeve 22. A second sealing ring 25 is provided at a position where the outer wall of the joint end of the rotating conduit 21 and the inner wall of the sleeve end of the fixed sleeve 22 are in close contact. The fixed ball bearing sleeve 23 is rigidly sealed with the fixed sleeve 22 through the flange bolt 26. A second rubber sealing ring 25 is provided in the gap between the fixed ball bearing sleeve 23 and the outer wall of the rotating conduit 21 to ensure that debris does not enter the bearing.

[0051] Finally: the catheter rotating device 20 and the connecting joint 60 are assembled:

[0052] By rotating the conduit 21 and connecting the corresponding ends of the pipe clamp 40 and the connecting joint 60, an O-type shock-absorbing mobile mechanism is formed.

Claims

1. A ground pump conduit damping steering joint system, characterized by: It comprises two sets of straight section main conduits, each of which is equipped with a conduit telescopic elastic damping device. The ends of the two sets of conduits away from the straight section main conduits are each equipped with a Y-shaped connecting joint, and the ends of the connecting joints are equipped with a conduit rotating device. The two sets of conduit rotating devices on the corresponding sides are equipped with a U-shaped conduit shock-absorbing motor mechanism. Each U-shaped conduit shock-absorbing motor mechanism includes two conduit telescopic elastic damping devices and bent pipes installed at two ends of the conduit telescopic elastic damping devices, and the bent pipes are connected to the corresponding conduit rotating devices; The first and second catheter telescopic elastic damping devices have the same structure and both include a piston catheter and a piston catheter sleeve. The piston catheter is installed at one end of the connecting joint or one end of the elbow through a pipe clamp. The piston catheter sleeve is installed at the end of the straight section main catheter or the end of the elbow and forms a piston cylinder cavity between the corresponding pipe walls. A piston cylinder cover is sleeved on the outer side of the piston catheter and the piston cylinder cover is fixed to the piston catheter sleeve through a flange thread. A spring end bearing plate and a spring 1 sleeved on the piston catheter between the piston cylinder cover and the spring end bearing plate are installed at the end of the piston sleeve. A spring 2 is installed in the piston cylinder cavity and the end of the spring 2 abuts against the spring end bearing plate. A sealing ring 1 is installed between the piston catheter and the outer wall of the internal pipe of the piston cylinder cavity and between the spring end bearing plate and the inner wall of the piston catheter sleeve. The conduit rotating device includes a rotating conduit installed at the end of the connecting joint through a pipe clamp and a fixed sleeve installed at the end of the elbow. The end of the rotating conduit is provided with a supporting step, and the fixed sleeve is provided with a step structure adapted to the supporting step. A fixed roller bearing sleeve is installed on the outer side of the rotating conduit, a roller is installed between the fixed roller bearing sleeve and the rotating conduit, and the fixed roller bearing sleeve and the fixed sleeve are installed by flange bolts. A second sealing ring is installed between the supporting step and the step structure, and between the fixed roller bearing sleeve and the rotating conduit. A flange limiter is installed inside the fixed sleeve and is located on the supporting step.

2. A ground pump conduit damping steering joint system according to claim 1, characterized in that: An air damping throttle hole is provided on the spring end supporting plate.

3. The method for using the ground pump conduit damping steering joint system according to claim 2, characterized in that: The steps are as follows: First: Assemble the catheter telescopic elastic damping device 1 and the catheter telescopic elastic damping device 2: A second spring is inserted into the piston guide sleeve along the axial direction, and then the piston guide is inserted. The piston guide spring end bearing plate maintains a certain elastic contact with the springs at both ends. After the piston guide is inserted, the first spring is inserted into the axial direction of the piston guide. Finally, the piston cylinder cover is installed. The piston cylinder cover is rigidly sealed with the outer wall of the piston guide sleeve through a flange thread. A rubber sealing ring is added to the outer edge of the spring end bearing plate tightly against the inner wall of the piston guide sleeve. The piston guide is in a sealed state when it moves axially in the piston guide sleeve. An air damping throttle hole is opened on the spring end bearing plate. Next: Assemble the connecting joint and the straight main pipe: The straight section main conduit is installed at the corresponding end of the connecting joint through the piston conduit of the conduit telescopic elastic damping device 1 through the pipe clamp; Next: Assemble the U-shaped guide tube shock absorption mechanism: The second catheter telescopic elastic damping device is respectively installed on the corresponding elbow end through its own piston catheter and piston catheter sleeve; Again: Assemble the catheter rotation device: Install the flange limiter on the rotating conduit joint end and connect them rigidly and sealably. Then insert the rotating conduit joint end into the fixed sleeve end. A second sealing ring is provided at a position where the outer wall of the rotating conduit joint end and the inner wall of the fixed sleeve end are in close contact. The fixed ball bearing sleeve is rigidly and sealably connected to the fixed sleeve through the flange bolts. A second rubber sealing ring is provided in the gap between the fixed ball bearing sleeve and the outer wall of the rotating conduit to ensure that debris does not enter the bearing. Finally: Assemble the catheter turning device and connecting joint: The guide tube is connected to the corresponding ends of the connecting joint through the pipe clamp by rotating the guide tube to form an O-type shock-absorbing mobile mechanism.

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