A flexible hose corrosion resistance testing device

Abstract

This invention provides a flexible hose corrosion resistance testing device, relating to the field of flexible hose corrosion resistance testing, comprising: a testing chamber; a partition frame fixedly installed inside the testing chamber, with a through-hole in the partition frame; a hose to be tested movably installed inside the through-hole; an air inlet pipe A fixedly installed inside the bottom side of the testing chamber; auxiliary structures fixedly installed on both sides of the testing chamber, with clamping components installed on both sides of the testing chamber; an air inlet mechanism slidably installed inside the auxiliary structures, and a driving component fixedly installed on the outside of the auxiliary structures. By providing multiple sets of air inlet pipes and a flexibly adjustable air inlet mechanism, different types and pressures of gas or liquid can be delivered into the testing chamber and into the hose to be tested, thereby conveniently simulating various complex testing environments and solving the problem that the same hose sample cannot be subjected to multiple preset corrosion conditions in a single testing cycle.

Description

Technical Field

[0001] This invention relates to the field of corrosion resistance testing technology for flexible hoses, and particularly to a corrosion resistance testing device for flexible hoses. Background Technology

[0002] In numerous industrial sectors, such as chemical, petroleum, food processing, and aerospace, flexible hoses are widely used as a key fluid transport component to convey various media with different chemical and physical properties, including corrosive liquids, gases, and high-temperature, high-pressure fluids. With breakthroughs in new materials technology, customized flexible hose solutions for different operating conditions have emerged. From high-performance polymer composite materials to nano-modified alloy liners, new hose structures achieve a synergistic improvement in corrosion resistance, temperature resistance, and mechanical strength through molecular-level design. However, the more complex the application scenarios of new materials, the more critical it is to verify their long-term service performance. To ensure that new material flexible hoses can be used safely and reliably in various complex environments, accurate testing of their corrosion resistance is particularly important.

[0003] Existing flexible hose corrosion resistance testing devices mostly adopt a closed single-chamber structure. The switching of testing environments must be completed through staged offline operations, which means that the same hose sample cannot be subjected to multiple preset corrosion conditions within a single testing cycle. First, this leads to low testing efficiency. If performance data of the hose under different corrosion environments is required, it must be achieved through multiple independent tests, which increases repetitive work such as sample preparation and equipment debugging. Second, the comparability of experimental results is limited. It is difficult to ensure that environmental parameters are completely consistent in batch testing, and the hose material may have undergone irreversible microstructural changes after the first test. This causes the baseline conditions of subsequent batch test results to deviate, which seriously restricts the effectiveness of multi-environment data comparison and analysis. Summary of the Invention

[0004] In view of this, the present invention provides a flexible hose corrosion resistance testing device, which has multiple sets of air inlet pipes and a flexibly adjustable air inlet mechanism, capable of delivering different types and pressures of gas or liquid into the testing chamber and the hose under test, thereby conveniently simulating a variety of complex testing environments; this allows the same flexible hose to undergo multiple different conditions in the same testing process, improving the effectiveness of multi-environment data comparison and analysis.

[0005] This invention provides a flexible hose corrosion resistance testing device, specifically comprising: a testing box; a partition frame fixedly installed inside the testing box, with a through-hole formed inside the partition frame; a flexible hose to be tested movably installed inside the through-hole, with chamfers on both sides of the through-hole; an air inlet pipe A fixedly installed inside the bottom side of the testing box, with three sets of air inlet pipes A; auxiliary structures fixedly installed on both sides of the testing box, with clamping components installed on both sides of the testing box, and a locking structure fixedly installed on the outside of the testing box; an air intake mechanism slidably installed inside the auxiliary structure, and a driving component fixedly installed on the outside of the auxiliary structure;

[0006] The auxiliary structure includes: an auxiliary frame, a sealing groove C, an inner support ring, an air inlet pipe B, and an annular groove; the auxiliary frame is fixedly installed inside both sides of the test box; the sealing groove C is opened inside the top side of the auxiliary frame; the inner support ring is fixedly installed on one side of the auxiliary frame, and the end of the inner support ring is chamfered, and the inner support ring is movably installed inside the end of the hose to be tested; the air inlet pipe B is fixedly installed inside the auxiliary frame, and the end of the air inlet pipe B is located inside the inner support ring; the annular groove is opened inside the other side of the auxiliary frame.

[0007] Furthermore, a display is fixedly installed on the outside of the detection box, and sealing grooves B are opened on both sides of the top of the detection box, and sealing grooves B are connected to sealing grooves C; two sets of partitions are arranged symmetrically, and sealing grooves A are opened on the top of the partitions, and sealing grooves A are connected to sealing grooves B; air pressure sensors A are fixedly installed on both sides of the partitions, and air pressure sensors A are electrically connected to the display.

[0008] Furthermore, a connecting shaft is rotatably provided on one side of the top of the testing box, and a box cover is fixedly provided on the outside of the connecting shaft; a sealing ring and a sealing strip are fixedly provided on the inside of the box cover, and the sealing ring is movably provided between the sealing groove B and the sealing groove C, and the sealing strip is movably provided inside the sealing groove A; a fixing hook is fixedly provided on the outside of the box cover, and two sets of fixing hooks are symmetrically provided.

[0009] Furthermore, the locking structure includes: a fixed base, a handle, a rotating shaft, a locking rod, and a locking nut; the fixed base is fixedly disposed on the outside of the detection box; the end of the handle is rotatably disposed on the inside of the fixed base; the rotating shaft is rotatably disposed inside the handle; the locking rod is configured as a U-shaped structure, and both ends of the locking rod are movably disposed inside the rotating shaft; both ends of the locking rod are provided with threaded structures, and the locking rod is also movably disposed inside the fixed hook; the locking nut is disposed on the outside of both ends of the locking rod through a threaded connection, and the outside of the locking nut is in contact with the outside of the rotating shaft.

[0010] Furthermore, the clamping assembly includes: a double-ended screw, a clamping seat, a guide rod, and a guide base; the double-ended screw is rotatably disposed inside the testing box, and a handwheel is fixedly disposed at the top of the double-ended screw; the clamping seat is disposed on the outside of the double-ended screw via a threaded connection; the guide rod is fixedly disposed inside the testing box; and the guide base is slidably disposed on the outside of the guide rod.

[0011] Furthermore, the clamping assembly also includes: a clamping plate and an anti-slip pad; the clamping plate is fixedly disposed between the clamping seat and the guide seat; the anti-slip pad is fixedly disposed on the inner side of the clamping plate, and the inner side of the anti-slip pad is in contact with the outer side of the end of the hose to be tested, and the anti-slip pad and the clamping plate are symmetrically arranged.

[0012] Furthermore, the air intake mechanism includes: a sliding column, a sealing disc, an airbag, a pressure sensor B, and a pressure sensor C; the sliding column is slidably disposed inside the auxiliary frame, and the sliding column is located inside the inner support ring; the sealing disc is fixedly disposed at one end of the sliding column, and the sealing disc and the circular hole are located on the same axis; the airbag is fixedly disposed on the outside of the sealing disc, and the outside of the airbag is in contact with the inner wall of the hose to be tested; the pressure sensor B is fixedly disposed on both sides of the sealing disc; the pressure sensor C is fixedly disposed on the outside of the sealing disc, and the pressure sensor C is located inside the airbag, and both the pressure sensor C and the pressure sensor B are electrically connected to the display.

[0013] Furthermore, the air intake mechanism also includes: an inflation pipe, a three-way pipe, a solenoid valve, and an air intake pipe C; the inflation pipe is fixedly disposed between the sliding column and the sealing disc, and the inflation pipe communicates with the airbag; the three-way pipe is fixedly disposed at the end of the inflation pipe; the solenoid valve is fixedly disposed at the other two ends of the three-way pipe, and four sets of solenoid valves are provided; the air intake pipe C is fixedly disposed between the sliding column and the sealing disc, and the air intake pipe C penetrates the sealing disc.

[0014] Furthermore, the air intake mechanism also includes: a limiting seat and a sealing ring; the limiting seat is fixedly disposed at the end of the sliding column, and the outer side of the limiting seat is in contact with the outer side of the auxiliary frame; the sealing ring is fixedly disposed on the outer side of the limiting seat, and the sealing ring is movably disposed inside the annular groove.

[0015] Furthermore, the drive assembly includes: a drive frame, a drive screw, and a drive seat; the drive frame is fixedly disposed on the outside of the auxiliary frame, and a stiffener is fixedly disposed between the drive frame and the auxiliary frame; the drive screw is rotatably disposed inside the drive frame, and a handwheel is fixedly disposed at the top of the drive screw; the drive seat is slidably disposed inside the drive frame through a dovetail groove, and the drive seat is disposed on the outside of the drive screw through a threaded connection, and the drive seat is fixedly connected to the limit seat.

[0016] Beneficial effects

[0017] 1. This invention, by setting up two sets of partition frames, two sets of sealing discs, and airbags, can divide the outer and inner parts of the hose under test into three spaces. Simultaneously, with the cooperation of air inlet pipes A, B, and C, multiple independent corrosion detection areas can be created on a single hose under test. This allows the same hose sample to be subjected to multiple preset corrosion conditions within a single detection cycle, avoiding the problem of traditional devices requiring multiple independent tests to obtain performance data under different corrosion environments. It significantly reduces repetitive work such as sample preparation and equipment debugging, and significantly improves detection efficiency.

[0018] 2. This invention achieves precise clamping of the hose under test by rotating a double-ended screw to drive two sets of clamping plates to move synchronously in opposite directions and using an anti-slip pad to fix the end of the hose under test to the outside of the inner support ring. At the same time, rotating the drive screw drives the sliding column and the sealing plate to slide to the designated position inside the circular hole, ensuring accurate division of the internal space of the hose under test. Adjusting the position of the sealing plate facilitates the installation of the hose under test. Precise clamping and positioning prevent the hose from moving or deforming during the testing process, ensuring the reliability of the test.

[0019] 3. This invention uses an air pump and a solenoid valve to inflate the airbag into the inflation tube, allowing it to expand to a suitable degree. The air pressure is detected by a pressure sensor C, and inflation stops when a predetermined value is reached, thus achieving flexible adjustment of the airbag pressure. Furthermore, pressure sensors A, B, and C transmit pressure signals to a display screen, allowing testing personnel to operate based on the displayed pressure values, facilitating real-time monitoring and adjustment of the testing process.

[0020] 4. The locking structure of this invention uses components such as a handle, locking rod, and locking nut, which is simple and convenient to operate. It can quickly fix or open the box cover by fixing hook, which is convenient for installing and disassembling the hose to be tested. After the test is completed, the hose can be quickly removed for analysis, reducing operation time and improving the overall testing efficiency.

[0021] 5. This invention employs a multi-layered sealing structure, such as sealing rings and sealing strips placed inside sealing grooves B, C, and A respectively; the outer wall of the inflated airbag fits tightly against the inner wall of the hose under test; and the inner side of the separator fits tightly against the outer wall of the hose under test. These sealing measures effectively prevent leakage of corrosive media, ensure the isolation of the testing environment from the outside world, provide stable and reliable conditions for testing, and ensure the accuracy of the test data. Attached Figure Description

[0022] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings of the embodiments will be briefly described below.

[0023] The accompanying drawings described below are only related to some embodiments of the invention and are not intended to limit the invention.

[0024] In the attached diagram:

[0025] Figure 1 This is a schematic diagram of the overall structure of the present invention.

[0026] Figure 2 This is a schematic diagram of the clamping assembly of the present invention.

[0027] Figure 3 This is a schematic diagram of the internal structure of the detection box of the present invention.

[0028] Figure 4 This is a schematic diagram of the clamping plate of the present invention.

[0029] Figure 5 This is a schematic diagram of the locking structure of the present invention.

[0030] Figure 6 This is a schematic diagram of the structure of the box lid of the present invention.

[0031] Figure 7 This is a schematic diagram of the auxiliary frame of the present invention.

[0032] Figure 8 This is a schematic diagram of the connection structure between the auxiliary frame and the drive frame of the present invention.

[0033] Figure 9 This is a schematic diagram of the auxiliary structure of the present invention.

[0034] Figure 10 This is a schematic diagram of the air intake mechanism of the present invention.

[0035] Figure 11 This is a schematic diagram of the internal structure of the airbag and sealing disc of the present invention.

[0036] Figure 12 This is a schematic diagram of the structure of the driving component of the present invention.

[0037] Figure 13 This is a cross-sectional structural diagram of the hose to be tested according to the present invention.

[0038] List of reference numerals

[0039] 1. Testing box; 101. Display; 102. Air inlet pipe A; 103. Divider; 104. Sealing groove A; 105. Air pressure sensor A; 106. Round hole; 107. Sealing groove B; 108. Connecting shaft; 109. Box cover; 1010. Sealing ring; 1011. Sealing strip; 1012. Fixing hook;

[0040] 2. Locking structure; 201. Fixing base; 202. Handle; 203. Rotating shaft; 204. Locking rod; 205. Locking nut;

[0041] 3. Auxiliary structures; 301. Auxiliary frame; 302. Sealing groove C; 303. Inner support ring; 304. Intake pipe B; 305. Annular groove;

[0042] 4. Clamping assembly; 401. Double-ended screw; 402. Clamping seat; 403. Guide rod; 404. Guide seat; 405. Clamping plate; 406. Anti-slip pad;

[0043] 5. Intake mechanism; 501. Sliding column; 502. Sealing disc; 503. Airbag; 504. Pressure sensor B; 505. Pressure sensor C; 506. Inflation pipe; 507. T-connector; 508. Solenoid valve; 509. Intake pipe C; 5010. Limit seat; 5011. Sealing ring;

[0044] 6. Drive assembly; 601. Drive frame; 602. Drive screw; 603. Drive base;

[0045] 7. The tubing to be tested. Detailed Implementation

[0046] To make the objectives, solutions, and advantages of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Unless otherwise stated, the terms used herein have their ordinary meanings in the art. The same reference numerals in the drawings represent the same parts.

[0047] Example 1: Please refer to Figures 1 to 13 As shown:

[0048] This invention provides a corrosion resistance testing device for flexible hoses, including a testing box 1; a partition frame 103 is fixedly installed inside the testing box 1, and a through-hole 106 is provided inside the partition frame 103; a hose 7 to be tested is movably installed inside the through-hole 106, and chamfers are provided on both sides of the through-hole 106; an air inlet pipe A102 is fixedly installed inside the bottom side of the testing box 1, and three sets of air inlet pipes A102 are provided; auxiliary structures 3 are fixedly installed on both sides of the testing box 1, and clamping components 4 are installed on both sides of the testing box 1; a locking structure 2 is fixedly installed on the outside of the testing box 1; the auxiliary structure 3 has a sliding mechanism inside. An air intake mechanism 5 is provided, and a drive assembly 6 is fixedly installed on the outside of the auxiliary structure 3; a display 101 is fixedly installed on the outside of the detection box 1, and sealing grooves B107 are opened on both sides of the top of the detection box 1, and the sealing grooves B107 communicate with the sealing groove C302; two sets of partition frames 103 are arranged symmetrically, and a sealing groove A104 is opened on the top of the partition frame 103, and the sealing groove A104 communicates with the sealing groove B107; a pressure sensor A105 is fixedly installed on both sides of the partition frame 103, and the pressure sensor A105 is electrically connected to the display 101; the detection box A connecting shaft 108 is rotatably mounted on one side of the top, and a box cover 109 is fixedly mounted on the outside of the connecting shaft 108; a sealing ring 1010 and a sealing strip 1011 are fixedly mounted on the inside of the box cover 109, and the sealing ring 1010 is movably mounted between the sealing groove B107 and the sealing groove C302, and the sealing strip 1011 is movably mounted inside the sealing groove A104; a fixing hook 1012 is fixedly mounted on the outside of the box cover 109, and two sets of fixing hooks 1012 are symmetrically arranged; the locking structure 2 includes: a fixing base 201, a handle 202, a rotating shaft 203, and a locking rod 20 4. A locking nut 205 is used; a fixed base 201 is fixedly installed on the outside of the detection box 1; the end of the handle 202 is rotatably installed on the inside of the fixed base 201; a rotating shaft 203 is rotatably installed inside the handle 202; a locking rod 204 is configured with a U-shaped structure, and both ends of the locking rod 204 are movably installed inside the rotating shaft 203; both ends of the locking rod 204 are provided with threaded structures, and the locking rod 204 is also movably installed inside the fixed hook 1012; a locking nut 205 is provided on the outside of both ends of the locking rod 204 through a threaded connection, and the outside of the locking nut 205 is in contact with the outside of the rotating shaft 203;

[0049] In this embodiment, the auxiliary structure 3 includes: an auxiliary frame 301, a sealing groove C302, an inner support ring 303, an air inlet pipe B304, and an annular groove 305; the auxiliary frame 301 is fixedly installed inside both sides of the test box 1; the sealing groove C302 is opened inside the top side of the auxiliary frame 301; the inner support ring 303 is fixedly installed on one side of the auxiliary frame 301, and the end of the inner support ring 303 is chamfered, and the inner support ring 303 is movably installed inside the end of the hose 7 to be tested; the air inlet pipe B304 is fixedly installed inside the auxiliary frame 301, and the end of the air inlet pipe B304 is located inside the inner support ring 303. The annular groove 305 is located inside the auxiliary frame 301 on the other side. The air intake mechanism 5 includes: a sliding column 501, a sealing disc 502, an airbag 503, a pressure sensor B504, a pressure sensor C505, an inflation pipe 506, a three-way pipe 507, a solenoid valve 508, and an air intake pipe C509. The sliding column 501 is slidably disposed inside the auxiliary frame 301, and the sliding column 501 is located inside the inner support ring 303. The sealing disc 502 is fixedly disposed at one end of the sliding column 501, and the sealing disc 502 and the circular hole 106 are located on the same axis. The airbag 503 is fixedly disposed on the sealing disc 502. The outer side of the airbag 503 is in contact with the inner wall of the hose 7 to be tested; the pressure sensor B504 is fixedly installed on both sides of the sealing disc 502; the pressure sensor C505 is fixedly installed on the outer side of the sealing disc 502, and the pressure sensor C505 is located inside the airbag 503, and both the pressure sensor C505 and the pressure sensor B504 are electrically connected to the display 101; the inflation tube 506 is fixedly installed between the sliding column 501 and the inside of the sealing disc 502, and the inflation tube 506 communicates with the airbag 503; the three-way tube 507 is fixedly installed at the end of the inflation tube 506; the solenoid valve 5 08 is fixedly installed at both ends of the three-way pipe 507, and four sets of solenoid valves 508 are provided; the air inlet pipe C509 is fixedly installed between the sliding column 501 and the sealing plate 502, and the air inlet pipe C509 passes through the sealing plate 502; its specific function is: by setting two sets of partition frames 103, two sets of sealing plates 502 and airbag 503, it can divide the outside and inside of the hose to be tested 7 into three spaces; at the same time, in conjunction with the air inlet pipe A102, the air inlet pipe B304 and the air inlet pipe C509, multiple independent corrosion detection areas can be created on a hose to be tested 7 at the same time.

[0050] Example 2: Please refer to Figure 2 and Figure 4As shown: Based on Embodiment 1, the clamping assembly 4 includes: a double-ended screw 401, a clamping seat 402, a guide rod 403, a guide seat 404, a clamping plate 405, and an anti-slip pad 406; the double-ended screw 401 is rotatably disposed inside the detection box 1, and a handwheel is fixedly disposed at the top of the double-ended screw 401; the clamping seat 402 is disposed outside the double-ended screw 401 by a threaded connection; the guide rod 403 is fixedly disposed inside the detection box 1; the guide seat 404 is slidably disposed outside the guide rod 403; the clamping plate 405 is fixedly installed between the clamping seat 402 and the guide seat 404; the anti-slip pad 406 is fixedly installed on the inner side of the clamping plate 405, and the inner side of the anti-slip pad 406 is in contact with the outer side of the end of the hose 7 to be tested, and the anti-slip pad 406 and the clamping plate 405 are symmetrically arranged; its specific function is: by rotating the double-headed screw 401, the two sets of clamping plates 405 move synchronously in opposite directions, and the end of the hose 7 to be tested is fixed to the outer side of the inner support ring 303 by using the anti-slip pad 406, so as to achieve precise clamping of the hose 7 to be tested.

[0051] Example 3: Please refer to Figure 7 , Figure 8 and Figure 12 As shown: Based on Embodiment 1 and Embodiment 2, the intake mechanism 5 further includes: a limiting seat 5010 and a sealing ring 5011; the limiting seat 5010 is fixedly disposed at the end of the sliding column 501, and the outer side of the limiting seat 5010 is in contact with the outer side of the auxiliary frame 301; the sealing ring 5011 is fixedly disposed on the outer side of the limiting seat 5010, and the sealing ring 5011 is movably disposed inside the annular groove 305; the drive assembly 6 includes: a drive frame 601, a drive screw 602 and a drive seat 603; the drive frame 601 is fixedly disposed on the outer side of the auxiliary frame 301, and a rib is fixedly disposed between the drive frame 601 and the auxiliary frame 301. The drive screw 602 is rotatably mounted inside the drive frame 601, and a handwheel is fixedly mounted on the top of the drive screw 602; the drive seat 603 is slidably mounted inside the drive frame 601 through a dovetail groove, and the drive seat 603 is threadedly connected to the outside of the drive screw 602, and the drive seat 603 is fixedly connected to the limit seat 5010; its specific function is: rotating the drive screw 602 causes the sliding column 501 and the sealing plate 502 to slide to the designated position inside the round hole 106, ensuring the accurate division of the internal space of the hose 7 to be tested, and adjusting the position of the sealing plate 502 can facilitate the installation of the hose 7 to be tested.

[0052] The specific usage and function of this embodiment: In this invention, the test hose 7 is passed through the round hole 106, so that the test hose 7 is located inside the separator 103; then the two ends of the test hose 7 are placed on the outside of the inner support ring 303 respectively; then the double-ended screw 401 is rotated, and the double-ended screw 401 drives the two sets of clamping plates 405 to move synchronously in opposite directions through the clamping seat 402, the guide rod 403 and the guide seat 404, so that the clamping plates 405 fix the end of the test hose 7 to the outside of the inner support ring 303 through the anti-slip pad 406; then the drive screw 602 is rotated, and the drive screw 602 drives the sliding column 501 and the sealing plate 502 to slide through the drive seat 603 and the limiting seat 5010; when the limiting seat 5010... When the outer side of 010 is in contact with the outer side of the auxiliary frame 301, and the sealing ring 5011 slides into the annular groove 305, it indicates that the sealing disc 502 is slid into the designated position inside the circular hole 106; then, air is injected into the inflation tube 506 through the air pump and a set of solenoid valves 508, causing the airbag 503 to inflate; when the air pressure sensor C505 detects that the air pressure inside the airbag 503 has reached the predetermined value, inflation stops; this makes the outer wall of the airbag 503 fit tightly against the inner wall of the hose 7 under test, and at the same time, makes the inner side of the separator 103 fit tightly against the outer wall of the hose 7 under test; thus, the inside of the hose 7 under test is divided into three spaces by the sealing disc 502 and the airbag 503, and the outside of the hose 7 under test is divided into three spaces by the separator 103. Space; then close the box cover 109, so that the sealing ring 1010 and the sealing strip 1011 are respectively placed inside the sealing groove B107, the sealing groove C302, and the sealing groove A104; then place the locking rod 204 inside the fixing hook 1012; then press down the handle 202 so that the handle 202 is in a vertical position, so that the locking rod 204 is fixed to the box cover 109 by the fixing hook 1012; then inject salt spray or corrosive media of different concentrations into the three spaces outside the test hose 7 through the three sets of air inlet pipes A102; so that the outer wall of the test hose 7 is in three different corrosion resistance testing environments; inject corrosive media into both sides inside the test hose 7 through the air inlet pipe B304, and then through The air inlet pipe C509 injects corrosive media of different concentrations between the two sets of sealing discs 502, so that the inner wall of the hose 7 under test is in three different corrosion resistance testing environments; thus, it is possible to subject the same hose sample to multiple preset corrosion conditions within a single testing cycle; after the test is completed, the gas in the airbag 503 is released through another set of solenoid valves 508 at the end of the three-way pipe 507, and then the sealing discs 502 are adjusted to the initial position; then the hose 7 under test can be removed for analysis; the pressure sensor A105, pressure sensor B504, and pressure sensor C505 transmit the pressure signal to the display 101 for display, so that the testing personnel can operate according to the displayed pressure value.

Claims

1. A flexible hose corrosion resistance testing device, characterized in that, include: Test box (1); a partition frame (103) is fixedly installed inside the test box (1), and a circular hole (106) is opened through the partition frame (103); a test hose (7) is movably installed inside the circular hole (106), and chamfers are opened on both sides of the circular hole (106); an air inlet pipe A (102) is fixedly installed inside the bottom side of the test box (1), and three sets of air inlet pipes A (102) are provided; an auxiliary structure (3) is fixedly installed on both sides of the test box (1), and clamping components (4) are installed on both sides of the test box (1), and a locking structure (2) is fixedly installed on the outside of the test box (1); an air intake mechanism (5) is slidably installed inside the auxiliary structure (3), and a driving component (6) is fixedly installed on the outside of the auxiliary structure (3); The auxiliary structure (3) includes: an auxiliary frame (301), a sealing groove C (302), an inner support ring (303), an air inlet pipe B (304), and an annular groove (305); the auxiliary frame (301) is fixedly installed inside both sides of the test box (1); the sealing groove C (302) is opened inside the top side of the auxiliary frame (301); the inner support ring (303) is fixedly installed on one side of the auxiliary frame (301), and the end of the inner support ring (303) is chamfered, and the inner support ring (303) is movably installed inside the end of the hose (7) to be tested; the air inlet pipe B (304) is fixedly installed inside the auxiliary frame (301), and the end of the air inlet pipe B (304) is located inside the inner support ring (303); the annular groove (305) is opened inside the other side of the auxiliary frame (301); The air intake mechanism (5) includes: a sliding column (501), a sealing disc (502), an airbag (503), a pressure sensor B (504), and a pressure sensor C (505); the sliding column (501) is slidably disposed inside the auxiliary frame (301), and the sliding column (501) is located inside the inner support ring (303); the sealing disc (502) is fixedly disposed at one end of the sliding column (501), and the sealing disc (502) and the circular hole (106) are located on the same axis; the airbag (503) is fixedly disposed on the outside of the sealing disc (502), and the outside of the airbag (503) is in contact with the inner wall of the hose (7) to be tested; the pressure sensor B (504) is fixedly disposed on both sides of the sealing disc (502); the pressure sensor C (505) is fixedly disposed on the sealing disc (502). The air pressure sensor C (505) is located on the outside of the airbag (503); the air intake mechanism (5) also includes: an inflation tube (506), a three-way tube (507), a solenoid valve (508) and an air intake tube C (509); the inflation tube (506) is fixedly disposed between the sliding column (501) and the sealing plate (502), and the inflation tube (506) is connected to the airbag (503); the three-way tube (507) is fixedly disposed at the end of the inflation tube (506); the solenoid valve (508) is fixedly disposed at the other two ends of the three-way tube (507), and four sets of solenoid valves (508) are provided; the air intake tube C (509) is fixedly disposed between the sliding column (501) and the sealing plate (502), and the air intake tube C (509) penetrates the sealing plate (502).

2. The flexible hose corrosion resistance testing device according to claim 1, characterized in that: The detection box (1) is fixedly equipped with a display (101) on the outside, and the top of the detection box (1) is provided with sealing grooves B (107) on both sides, and the sealing grooves B (107) are connected to the sealing grooves C (302); the partition frame (103) is symmetrically arranged in two sets, and the top of the partition frame (103) is provided with sealing grooves A (104), and the sealing grooves A (104) are connected to the sealing grooves B (107); the partition frame (103) is fixedly equipped with air pressure sensors A (105) on both sides, and the air pressure sensors A (105) are electrically connected to the display (101).

3. The flexible hose corrosion resistance testing device according to claim 2, characterized in that: The top side of the test box (1) is rotatably provided with a connecting shaft (108), and a box cover (109) is fixedly provided on the outside of the connecting shaft (108); a sealing ring (1010) and a sealing strip (1011) are fixedly provided on the inside of the box cover (109), and the sealing ring (1010) is movably provided inside the sealing groove B (107) and the sealing groove C (302), and the sealing strip (1011) is movably provided inside the sealing groove A (104); a fixing hook (1012) is fixedly provided on the outside of the box cover (109), and two sets of fixing hooks (1012) are symmetrically provided.

4. The flexible hose corrosion resistance testing device according to claim 3, characterized in that: The locking structure (2) includes: a fixed seat (201), a handle (202), a rotating shaft (203), a locking rod (204), and a locking nut (205); the fixed seat (201) is fixedly installed on the outside of the detection box (1); the end of the handle (202) is rotatably installed on the inside of the fixed seat (201); the rotating shaft (203) is rotatably installed inside the handle (202); the locking rod (204) is set as a U-shaped structure, and both ends of the locking rod (204) are movably installed inside the rotating shaft (203); both ends of the locking rod (204) are provided with threaded structures, and the locking rod (204) is also movably installed inside the fixed hook (1012); the locking nut (205) is set on the outside of both ends of the locking rod (204) through threaded connection, and the outside of the locking nut (205) is in contact with the outside of the rotating shaft (203).

5. The flexible hose corrosion resistance testing device according to claim 1, characterized in that: The clamping assembly (4) includes: a double-ended screw (401), a clamping seat (402), a guide rod (403), and a guide seat (404); the double-ended screw (401) is rotatably disposed inside the detection box (1), and a handwheel is fixedly disposed at the top of the double-ended screw (401); the clamping seat (402) is disposed outside the double-ended screw (401) by a threaded connection; the guide rod (403) is fixedly disposed inside the detection box (1); and the guide seat (404) is slidably disposed outside the guide rod (403).

6. The flexible hose corrosion resistance testing device according to claim 5, characterized in that: The clamping assembly (4) further includes: a clamping plate (405) and an anti-slip pad (406); the clamping plate (405) is fixedly disposed between the clamping seat (402) and the guide seat (404); the anti-slip pad (406) is fixedly disposed on the inner side of the clamping plate (405), and the inner side of the anti-slip pad (406) is in contact with the outer side of the end of the hose (7) to be tested, and the anti-slip pad (406) and the clamping plate (405) are arranged symmetrically.

7. The flexible hose corrosion resistance testing device according to claim 2, characterized in that: Both the pressure sensor C (505) and the pressure sensor B (504) are electrically connected to the display (101).

8. The flexible hose corrosion resistance testing device according to claim 1, characterized in that: The air intake mechanism (5) further includes: a limiting seat (5010) and a sealing ring (5011); the limiting seat (5010) is fixedly disposed at the end of the sliding column (501), and the outer side of the limiting seat (5010) is in contact with the outer side of the auxiliary frame (301); the sealing ring (5011) is fixedly disposed on the outer side of the limiting seat (5010), and the sealing ring (5011) is movably disposed inside the annular groove (305).

9. The flexible hose corrosion resistance testing device according to claim 8, characterized in that: The drive assembly (6) includes: a drive frame (601), a drive screw (602), and a drive seat (603); the drive frame (601) is fixedly disposed on the outside of the auxiliary frame (301), and a rib is fixedly disposed between the drive frame (601) and the auxiliary frame (301); the drive screw (602) is rotatably disposed inside the drive frame (601), and a handwheel is fixedly disposed at the top of the drive screw (602); the drive seat (603) is slidably disposed inside the drive frame (601) through a dovetail groove, and the drive seat (603) is disposed on the outside of the drive screw (602) through a threaded connection, and the drive seat (603) is fixedly connected to the limit seat (5010).

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