A life test bench for rotary joints for fluid transportation

Abstract

The present invention belongs to the technical field of rotary joints, and discloses a rotary joint life test bench for fluid transportation, including a base, a base is fixedly installed at a position near the middle of the top of the base, a frame is fixedly installed on the left side of the top of the base, a longitudinal guide rail is fixedly installed on the right side of the top of the base, a guide block is movably connected to the inner part of the longitudinal guide rail, the guide block is displaced up and down relative to the longitudinal guide rail, and a water delivery component is fixedly sleeved in the middle of the base. The present invention directly drives the rotary joint to complete the rotation test by utilizing the rotation process of the power component, and converts the rotation action into up and down linear motion through the cooperation of the power component and the transmission component, so that each rotation can complete an upward movement process, and the number of rotations can be quickly obtained by counting each upward movement process. The whole process can be completed automatically, and the number of rotations can be calculated in real time until leakage occurs, which significantly improves the detection efficiency.

Description

Technical Field

[0001] The invention belongs to the technical field of rotary joints, in particular to a rotary joint life test bench for fluid transportation. Background Art

[0002] A rotary joint is a pipe connection device that allows the connected pipes to rotate relative to each other and realize 360° rotation of the conveying medium. Its core function is to realize the fluid connection between the rotating and stationary parts to ensure that the fluid can circulate smoothly in the system. A rotary joint is usually composed of a housing, a main shaft, a bearing, a retaining ring and a seal. Among them, the housing and the main shaft rotate relative to each other, and each ring is isolated by a seal to avoid mixing of the medium. There are independent pipelines inside the rotary joint, which can be selected according to different working conditions to maximize the benefits.

[0003] During the production process of rotary joints, the service life of rotary joints will be tested. Currently, the rotary joint test bench is mainly used to perform life testing of rotary joints. It is mainly fixed between the fixed joint and the flange and the rotary joint. After the fixation is completed, the fixed joint is driven by a motor to rotate to realize the test process. However, the current test process is to observe the wear degree after rotating for a period of time. When leakage occurs, the number of rotations cannot be intuitively reflected at this time, and improvement is urgently needed.

[0004] At the same time, when testing the rotary joint, the rotation test and water flow input cannot be performed at the same time, that is, it needs to rotate for a period of time before water flow can be introduced to perform the leakage test. The whole process is extremely cumbersome and the test efficiency is low. Summary of the invention

[0005] The object of the present invention is to provide a life test bench for a rotary joint for fluid transportation to solve the problems raised in the above-mentioned background technology.

[0006] In order to achieve the above-mentioned purpose, the present invention provides the following technical solutions: a life test bench for a rotary joint for fluid transportation, comprising a base, a base is fixedly installed at a position near the middle of the top of the base, a frame is fixedly installed on the left side of the top of the base, a longitudinal guide rail is fixedly installed on the right side of the top of the base, a guide block is movably connected to the inner part of the longitudinal guide rail, the guide block moves up and down relative to the longitudinal guide rail, a water delivery component is fixedly sleeved in the middle of the base, a fixed joint is movably sleeved inside the frame, a flange is fixedly installed on the front of the fixed joint, a power component is fixedly installed on the rear end of the fixed joint, a transmission component is fixedly installed on the rear end of the power component, the bottom end of the transmission component is connected to the top of the guide block, the bottom end of the water delivery component is fixedly connected to the middle of the top of the guide block, and a light touch counter is fixedly installed on the top of the inner cavity of the longitudinal guide rail.

[0007] Before use, the rotary joint to be tested needs to be fixed to the frame, and the flange needs to be tightly fixed to the rotary joint to ensure that the fixed joint can rotate with the rotary joint. The device should be filled with water and restored to its initial state to complete the preparations before the test.

[0008] As a further technical solution of the present invention, the power assembly includes a fixed seat, the top of the fixed seat is fixedly connected to the top of the frame, the bottom of the fixed seat is fixedly mounted with a motor, and the output end of the motor is fixedly mounted with a driving gear.

[0009] As a further technical solution of the present invention, a turntable is provided below the driving gear, the middle part of the rear end of the turntable is connected to the transmission component, the middle part of the outer side of the turntable is fixedly sleeved with a driven gear ring, and the driving gear and the driven gear ring are meshingly connected.

[0010] After the rotary joint is fixed, the motor can be turned on for testing. At this time, the motor can drive the active gear to rotate, and the driven gear ring at the bottom will rotate accordingly, and drive the turntable to rotate. When the turntable rotates, the fixed joint can be driven to rotate synchronously. When the fixed joint rotates, the test end of the rotary joint can be driven to rotate through the flange to perform a rotation test.

[0011] As a further technical solution of the present invention, the transmission assembly includes a first connecting rod, which is connected to the middle part of the rear end of the turntable, the end of the first connecting rod away from the turntable is movably connected to the second connecting rod through a rotating shaft, and the end of the second connecting rod away from the first connecting rod is movably connected to a mounting seat through a rotating shaft.

[0012] As a further technical solution of the present invention, the bottom end of the mounting seat is connected to the top end of the guide block, and the guide block located inside the longitudinal guide rail is located directly below the light touch counter.

[0013] When the power component drives the fixed joint to rotate and realizes the rotation of the rotary joint, the first connecting rod can rotate circumferentially under the action of the turntable, and drive the second connecting rod to swing at the same time. When the second connecting rod swings, it can apply upward pulling force and downward thrust to the mounting seat, and finally drive the guide block to move back and forth up and down. When the driven gear ring rotates one circle, the mounting seat moves up to the highest point, that is, drives the guide block to move up to the highest point. At this time, the guide block contacts the light touch counter, completing a counting process, that is, completing a rotation counting process, until the rotary joint leaks, and the counting value is the maximum number of rotations.

[0014] By utilizing the rotation process of the power component, the rotary joint is directly driven to complete the rotation test, and the rotation action is converted into up and down linear motion through the cooperation of the power component and the transmission component, so that one upward movement process can be completed with each rotation. By counting each upward movement process, the number of rotations can be quickly obtained. The whole process can be completed automatically, and the number of rotations can be calculated in real time until a leak occurs, which significantly improves the detection efficiency.

[0015] As a further technical solution of the present invention, a water tank located between the frame and the base is fixedly installed on the top of the base, and a water pipe is fixedly connected to the water tank near the bottom, and the other end of the water pipe is fixedly connected to the water supply component.

[0016] As a further technical solution of the present invention, a collecting box is movably sleeved on the outer side of the fixed joint and close to the power component. The bottom end of the collecting box is connected to the top of the water delivery component. Water delivery holes are opened at equal angles on the outer side of the fixed joint. The water delivery holes are connected to the collecting box, and the fixed joint rotates relative to the collecting box.

[0017] Before testing the swivel joint, the inside of the water tank needs to be filled with test water. Colored clean water can be used. At the same time, when the fixed joint rotates due to the test, the collecting box can remain fixed to ensure that water flows into the inside of the collecting box from below.

[0018] As a further technical solution of the present invention, the water delivery assembly includes a water delivery pipe, the outer side surface of the water delivery pipe is fixedly sleeved with the machine base, the inside of the water delivery pipe is movably sleeved with a piston plate, the bottom end of the piston plate is fixedly connected with a piston rod, the bottom end of the piston rod passes through the bottom end of the water delivery pipe and is connected to the top end of the guide block.

[0019] As a further technical solution of the present invention, a water inlet valve is fixedly installed on the outer side of the water pipe near the top, and the water inlet valve is connected to the water pipe. A drain valve is fixedly installed on the top of the water pipe, and the top of the drain valve is connected to the bottom of the collecting box. The water inlet valve and the drain valve are both one-way valves, and the directions of the valves are inward conduction and outward cutoff, and outward conduction and inward cutoff, respectively.

[0020] When conducting a rotation test of the rotary joint, the up and down reciprocating movement of the guide block can simultaneously drive the piston rod and the piston plate to move up and down. When the piston plate moves downward, negative pressure can be generated inside the water pipe, and water can be sucked from the inside of the water storage tank into the water pipe through the water pipe. When the piston plate moves upward, the water can be discharged through the drain valve and enter the inside of the collecting box. At this time, the water can enter the inside of the fixed joint through the water delivery hole, and flow into the rotary joint through the fixed joint, completing the water supply process.

[0021] By utilizing the active rotation process of the rotary joint during the rotation test, it can realize automatic counting while also realizing automatic absorption and automatic discharge of water flow, and complete it simultaneously with the rotation test. The entire process can be completed synchronously, so that the device can simultaneously introduce water flow during the rotation test, avoiding the problem that traditional devices need to stop rotating to introduce water flow, thereby further improving detection efficiency.

[0022] As a further technical solution of the present invention, a linkage frame is fixedly installed on the front of the guide block, a mounting frame is fixedly installed on the top of the linkage frame, and a PH test paper is installed on the top of the mounting frame.

[0023] When the guide block moves up and down, it can synchronously drive the linkage frame to move up and down, and finally drive the PH test paper on the top of the mounting frame to move up and down. When the mounting frame moves to the highest point, that is, one circle count is completed, the PH test paper on the top can contact the outer side of the rotary joint. If the rotary joint leaks at this time, water drips and the test paper changes color, completing the monitoring of the leakage point.

[0024] By utilizing the rotation process of the device, automatic counting and automatic water injection are achieved. At the same time, the test paper can be periodically contacted with the rotary joint through the up and down displacement, and the color change of the pH test paper when it is touched by water is utilized to quickly respond to whether the rotary joint is leaking. The problem that traditional devices require human eye observation is avoided, and leakage can be detected at the first time, thereby improving the degree of automation of the device and the test accuracy.

[0025] The beneficial effects of the present invention are as follows: (1) The present invention utilizes the rotation process of the power component to directly drive the rotary joint to complete the rotation test, and converts the rotation action into up and down linear motion through the cooperation of the power component and the transmission component, so that each rotation can complete an upward movement process. By counting each upward movement process, the number of rotations can be quickly obtained. The whole process can be completed automatically, and the number of rotations can be calculated in real time until a leak occurs, which significantly improves the detection efficiency.

[0026] (2) The present invention utilizes the active rotation process of the rotary joint during the rotation test to achieve automatic counting while also achieving automatic absorption and discharge of water flow, and completes the process simultaneously with the rotation test. The entire process can be completed synchronously, so that the device can simultaneously introduce water flow during the rotation test, avoiding the problem that the traditional device needs to stop rotating to introduce water flow, thereby further improving the detection efficiency.

[0027] (3) The present invention realizes automatic counting and automatic water injection by utilizing the rotation process of the device. At the same time, the test paper can be periodically contacted with the rotary joint by the up and down displacement of the test paper, and the color change of the pH test paper when it is touched by water can be used to quickly respond to whether the rotary joint is leaking. The problem that traditional devices require human visual observation is avoided, and leakage can be detected at the first time, thereby improving the degree of automation of the device and improving the test accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a back schematic diagram of the overall structure of the present invention; Figure 2 It is a front schematic diagram of the overall structure of the present invention; Figure 3 It is a cross-sectional schematic diagram of the internal structure of the water storage tank of the present invention; Figure 4 It is a cross-sectional schematic diagram of the internal structure of the water delivery component of the present invention; Figure 5 It is a schematic diagram of the coordination of the power assembly and the transmission assembly structure of the present invention; Figure 6 It is a schematic diagram of the coordination between the fixed joint and the header structure of the present invention; Figure 7 It is a cross-sectional schematic diagram of the internal structure of the collecting box of the present invention.

[0029] In the figure: 1. base; 2. machine base; 3. frame; 4. water storage tank; 5. water pipe; 6. longitudinal guide rail; 7. guide block; 8. water delivery assembly; 801. water pipe; 802. piston plate; 803. piston rod; 804. water inlet valve; 805. drain valve; 9. linkage frame; 10. mounting frame; 11. fixing joint; 12. flange; 13. collecting box; 14. water delivery hole; 15. power assembly; 151. fixing seat; 152. motor; 153. driving gear; 154. turntable; 155. driven gear ring; 16. transmission assembly; 161. first connecting rod; 162. second connecting rod; 163. mounting seat. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0031] like Figures 1 to 7As shown, in an embodiment of the present invention, a life test bench for a rotary joint for fluid transportation includes a base 1, a base 2 is fixedly installed at a position near the middle of the top of the base 1, a frame 3 is fixedly installed on the left side of the top of the base 1, a longitudinal guide rail 6 is fixedly installed on the right side of the top of the base 1, a guide block 7 is movably connected inside the longitudinal guide rail 6, and the guide block 7 moves up and down relative to the longitudinal guide rail 6, a water delivery component 8 is fixedly sleeved in the middle of the base 2, a fixed joint 11 is movably sleeved inside the frame 3, a flange 12 is fixedly installed on the front of the fixed joint 11, a power component 15 is fixedly installed at the rear end of the fixed joint 11, a transmission component 16 is fixedly installed at the rear end of the power component 15, the bottom end of the transmission component 16 is connected to the top of the guide block 7, the bottom end of the water delivery component 8 is fixedly connected to the middle of the top of the guide block 7, and a light touch counter is fixedly installed at the top of the inner cavity of the longitudinal guide rail 6.

[0032] Before use, the rotary joint to be tested needs to be fixed to the frame 3, and the flange 12 needs to be tightly fixed to the rotary joint to ensure that the fixed joint 11 can rotate with the rotary joint, and the device is filled with water and restored to its initial state to complete the preparations before the test.

[0033] like Figure 1 and Figure 2 as well as Figure 5 As shown, the power assembly 15 includes a fixed seat 151, the top of the fixed seat 151 is fixedly connected to the top of the frame 3, the bottom of the fixed seat 151 is fixedly installed with a motor 152, the output end of the motor 152 is fixedly installed with a driving gear 153, a turntable 154 is provided below the driving gear 153, the middle part of the rear end of the turntable 154 is connected to the transmission assembly 16, the middle part of the outer side of the turntable 154 is fixedly sleeved with a driven gear ring 155, and the driving gear 153 and the driven gear ring 155 are meshingly connected.

[0034] After the rotary joint is fixed, the motor 152 can be turned on for testing. At this time, the motor 152 can drive the active gear 153 to rotate, and the driven gear ring 155 at the bottom end rotates accordingly, and drives the turntable 154 to rotate. When the turntable 154 rotates, the fixed joint 11 can be driven to rotate synchronously. When the fixed joint 11 rotates, the test end of the rotary joint can be driven to rotate through the flange 12 to perform a rotation test.

[0035] like Figure 1 and Figure 5As shown, the transmission assembly 16 includes a first connecting rod 161, which is connected to the middle part of the rear end of the turntable 154, and the end of the first connecting rod 161 away from the turntable 154 is movably connected to the second connecting rod 162 through a rotating shaft, and the end of the second connecting rod 162 away from the first connecting rod 161 is movably connected to a mounting seat 163 through a rotating shaft, and the bottom end of the mounting seat 163 is connected to the top end of the guide block 7, and the guide block 7 located inside the longitudinal guide rail 6 is located directly below the light touch counter.

[0036] Embodiment: When the power assembly 15 drives the fixed joint 11 to rotate and realizes the rotation of the rotary joint, the first connecting rod 161 can rotate circumferentially under the action of the turntable 154, and drive the second connecting rod 162 to swing. When the second connecting rod 162 swings, it can apply an upward pulling force and a downward thrust to the mounting seat 163, and finally drive the guide block 7 to move back and forth up and down. When the driven gear ring 155 rotates one circle, the mounting seat 163 moves up to the highest point, that is, drives the guide block 7 to move up to the highest point. At this time, the guide block 7 contacts with the light touch counter, completing a counting process, that is, completing a rotation counting process, until the rotary joint leaks, and the count value is the maximum number of rotations.

[0037] By utilizing the rotation process of the power component 15, the rotary joint is directly driven to complete the rotation test, and the rotation action is converted into up and down linear motion through the cooperation of the power component 15 and the transmission component 16, so that one upward movement process can be completed with each rotation. By counting each upward movement process, the number of rotations can be quickly obtained. The whole process can be completed automatically, and the number of rotations can be calculated in real time until a leak occurs, thereby significantly improving the detection efficiency.

[0038] like Figure 1 and Figure 2 as well as Figure 3 As shown, a water tank 4 located between the frame 3 and the base 2 is fixedly installed on the top of the base 1, and a water pipe 5 is fixedly connected to the water tank 4 near the bottom end. The other end of the water pipe 5 is fixedly connected to the water delivery component 8. A collecting box 13 is movably sleeved on the outer side of the fixed joint 11 and near the power component 15. The bottom end of the collecting box 13 is connected to the top of the water delivery component 8. Water holes 14 are opened at equal angles on the outer side of the fixed joint 11. The water holes 14 are connected to the collecting box 13, and the fixed joint 11 rotates relative to the collecting box 13.

[0039] Before testing the rotary joint, the interior of the water storage tank 4 needs to be filled with test water, which can be colored clean water. At the same time, when the fixed joint 11 rotates due to the test, the collecting box 13 can remain fixed to ensure that water flows into the interior of the collecting box 13 from below.

[0040] like Figure 2 and Figure 4As shown, the water delivery assembly 8 includes a water delivery pipe 801, the outer side surface of the water delivery pipe 801 is fixedly sleeved with the machine base 2, the inside of the water delivery pipe 801 is movably sleeved with a piston plate 802, the bottom end of the piston plate 802 is fixedly connected with a piston rod 803, the bottom end of the piston rod 803 passes through the bottom end of the water delivery pipe 801 and is connected to the top of the guide block 7, an inlet valve 804 is fixedly installed on the outer side surface of the water delivery pipe 801 near the top, the inlet valve 804 is connected to the water delivery pipe 5, a drain valve 805 is fixedly installed on the top of the water delivery pipe 801, the top of the drain valve 805 is connected to the bottom end of the collecting box 13, the inlet valve 804 and the drain valve 805 are both one-way valves, and the directions of the valves are inward conduction and outward cut-off, and outward conduction and inward cut-off, respectively.

[0041] Embodiment: When performing a rotation test of the rotary joint, the up and down reciprocating movement of the guide block 7 can simultaneously drive the piston rod 803 and the piston plate 802 to move up and down. When the piston plate 802 moves downward, a negative pressure can be generated inside the water pipe 801, and water can be sucked from the inside of the water storage tank 4 into the water pipe 801 through the water pipe 5. When the piston plate 802 moves upward, the water can be discharged through the drain valve 805 and enter the inside of the collecting box 13. At this time, the water can enter the inside of the fixed joint 11 through the water hole 14, and flow into the rotary joint through the fixed joint 11, completing the water supply process.

[0042] By utilizing the active rotation process of the rotary joint during the rotation test, it can realize automatic counting while also realizing automatic absorption and automatic discharge of water flow, and complete it simultaneously with the rotation test. The entire process can be completed synchronously, so that the device can simultaneously introduce water flow during the rotation test, avoiding the problem that traditional devices need to stop rotating to introduce water flow, thereby further improving detection efficiency.

[0043] like Figure 1 and Figure 2 as well as Figure 4 As shown, a linkage frame 9 is fixedly mounted on the front of the guide block 7, a mounting frame 10 is fixedly mounted on the top of the linkage frame 9, and a PH test paper is mounted on the top of the mounting frame 10.

[0044] When the guide block 7 moves up and down, it can synchronously drive the linkage frame 9 to move up and down, and finally drive the PH test paper on the top of the mounting frame 10 to move up and down. When the mounting frame 10 moves to the highest point, that is, one circle counting is completed, the PH test paper on the top can contact the outer side of the rotary joint. If the rotary joint leaks at this time, water drips and the test paper changes color, completing the monitoring of the leakage point.

[0045] By utilizing the rotation process of the device, automatic counting and automatic water injection are achieved. At the same time, the test paper can be periodically contacted with the rotary joint through the up and down displacement, and the color change of the pH test paper when it is touched by water is utilized to quickly respond to whether the rotary joint is leaking. The problem that traditional devices require human eye observation is avoided, and leakage can be detected at the first time, thereby improving the degree of automation of the device and the test accuracy.

[0046] Working principle and usage process: Before use, the rotary joint to be tested needs to be fixed to the frame 3, and the flange 12 needs to be tightly fixed to the rotary joint to ensure that the fixed joint 11 can rotate with the rotary joint, and the device is filled with water, and the device is restored to the initial state to complete the preparation before the test; Before testing the rotary joint, the water storage tank 4 needs to be filled with test water, which can be colored water. At the same time, when the fixed joint 11 rotates due to the test, the header box 13 can remain fixed to ensure that water flows into the header box 13 from below; After the rotary joint is fixed, the motor 152 can be turned on for testing. At this time, the motor 152 can drive the driving gear 153 to rotate, and the driven gear ring 155 at the bottom rotates accordingly, and drives the turntable 154 to rotate. When the turntable 154 rotates, it can synchronously drive the fixed joint 11 to rotate. When the fixed joint 11 rotates, the test end of the rotary joint can be driven to rotate through the flange 12 to perform a rotation test. When the power assembly 15 drives the fixed joint 11 to rotate and realizes the rotation of the rotary joint, the first connecting rod 161 can rotate circumferentially under the action of the turntable 154, and drive the second connecting rod 162 to swing at the same time. When the second connecting rod 162 swings, it can apply an upward pulling force and a downward thrust to the mounting seat 163, and finally drive the guide block 7 to move up and down. When the driven gear ring 155 rotates one circle, the mounting seat 163 moves up to the highest point, that is, drives the guide block 7 to move up to the highest point. At this time, the guide block 7 contacts the light touch counter, completing a counting process, that is, completing a rotation counting process, until the rotary joint leaks, and the count value at this time is the maximum number of rotations; When the rotation test of the rotary joint is performed, the piston rod 803 and the piston plate 802 can be driven to move up and down and back and forth simultaneously due to the up and down reciprocating movement of the guide block 7. When the piston plate 802 moves downward, negative pressure can be generated inside the water pipe 801, and water can be sucked into the water pipe 801 from the inside of the water storage tank 4 through the water pipe 5. When the piston plate 802 moves upward, the water can be discharged through the drain valve 805 and enter the inside of the collecting box 13. At this time, the water can enter the inside of the fixed joint 11 through the water delivery hole 14, and flow into the rotary joint through the fixed joint 11, completing the water supply process; When the guide block 7 moves up and down, it can synchronously drive the linkage frame 9 to move up and down, and finally drive the PH test paper on the top of the mounting frame 10 to move up and down. When the mounting frame 10 moves to the highest point, that is, one circle counting is completed, the PH test paper on the top can contact the outer side of the rotary joint. If the rotary joint leaks at this time, water drips and the test paper changes color, completing the monitoring of the leakage point.

[0047] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A fluid transport rotary joint life test bench, comprising a base (1), characterized in that: A base (2) is fixedly mounted at a position near the middle of the top of the base (1), a frame (3) is fixedly mounted on the left side of the top of the base (1), a longitudinal guide rail (6) is fixedly mounted on the right side of the top of the base (1), a guide block (7) is movably connected inside the longitudinal guide rail (6), and the guide block (7) moves up and down relative to the longitudinal guide rail (6), a water delivery component (8) is fixedly sleeved in the middle of the base (2), a fixed joint (11) is movably sleeved inside the frame (3), a flange (12) is fixedly mounted on the front of the fixed joint (11), a power component (15) is fixedly mounted at the rear end of the fixed joint (11), a transmission component (16) is fixedly mounted at the rear end of the power component (15), the bottom end of the transmission component (16) is connected to the top of the guide block (7), the bottom end of the water delivery component (8) is fixedly connected to the middle of the top of the guide block (7), and a light touch counter is fixedly mounted at the top of the inner cavity of the longitudinal guide rail (6).

2. A fluid transport rotary joint life test bench according to claim 1, characterized in that: The power assembly (15) comprises a fixing seat (151), the top end of the fixing seat (151) is fixedly connected to the top end of the frame (3), a motor (152) is fixedly mounted on the bottom end of the fixing seat (151), and a driving gear (153) is fixedly mounted on the output end of the motor (152).

3. A fluid transport rotary joint life test bench according to claim 2, characterized in that: A rotating disk (154) is provided below the driving gear (153); the middle portion of the rear end of the rotating disk (154) is connected to the transmission assembly (16); a driven gear ring (155) is fixedly sleeved on the middle portion of the outer side surface of the rotating disk (154); the driving gear (153) and the driven gear ring (155) are meshingly connected.

4. A fluid transport rotary joint life test bench according to claim 3, characterized in that: The transmission assembly (16) comprises a first connecting rod (161), the first connecting rod (161) being connected to the middle portion of the rear end of the rotating disk (154), an end of the first connecting rod (161) away from the rotating disk (154) being movably connected to a second connecting rod (162) via a rotating shaft, and an end of the second connecting rod (162) away from the first connecting rod (161) being movably connected to a mounting seat (163) via a rotating shaft.

5. The life test bench for a rotary joint for fluid transportation according to claim 4, characterized in that: The bottom end of the mounting seat (163) is connected to the top end of the guide block (7), and the guide block (7) located inside the longitudinal guide rail (6) is located directly below the light touch counter.

6. A fluid transport rotary joint life test bench according to claim 5, characterized in that: A water storage tank (4) located between the frame (3) and the base (2) is fixedly mounted on the top of the base (1); a water delivery pipe (5) is fixedly connected to a position near the bottom of the water storage tank (4); the other end of the water delivery pipe (5) is fixedly connected to a water delivery assembly (8).

7. A fluid transport rotary joint life test bench according to claim 6, characterized in that: A collecting box (13) is movably sleeved on the outer side surface of the fixed joint (11) and close to the power assembly (15); the bottom end of the collecting box (13) is connected to the top end of the water delivery assembly (8); water delivery holes (14) are formed at equal angles on the outer side surface of the fixed joint (11); the water delivery holes (14) are connected to the collecting box (13); and the fixed joint (11) is rotatable relative to the collecting box (13).

8. The life test bench for a rotary joint for fluid transportation according to claim 7, characterized in that: The water delivery assembly (8) comprises a water delivery pipe (801), the outer side surface of the water delivery pipe (801) being fixedly sleeved with the machine base (2), the interior of the water delivery pipe (801) being movably sleeved with a piston plate (802), the bottom end of the piston plate (802) being fixedly connected with a piston rod (803), the bottom end of the piston rod (803) penetrating the bottom end of the water delivery pipe (801) and being connected to the top end of the guide block (7).

9. A fluid transport rotary joint life test bench according to claim 8, characterized in that: A water inlet valve (804) is fixedly installed on the outer side surface of the water delivery pipe (801) near the top, and the water inlet valve (804) is connected to the water delivery pipe (5). A water discharge valve (805) is fixedly installed on the top of the water delivery pipe (801), and the top of the water discharge valve (805) is connected to the bottom of the collecting box (13). The water inlet valve (804) and the water discharge valve (805) are both one-way valves, and the valve directions are inward conduction and outward blocking, and outward conduction and inward blocking, respectively.

10. A fluid transport rotary joint life test bench according to claim 9, characterized in that: A linkage frame (9) is fixedly mounted on the front of the guide block (7), a mounting frame (10) is fixedly mounted on the top of the linkage frame (9), and a PH test paper is mounted on the top of the mounting frame (10).

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