Corrosion test box based on mixed gas

Abstract

The utility model discloses a corrosion test box based on mixed gas, which comprises a test box body, the front end of the test box body is hinged with a double-open sealing door through a hinge, the inner cavity of the test box body is movably provided with a storage table for placing a test object, and the inner cavity of the test box body is provided with a gas inlet and a gas outlet. A lifting assembly for lifting the storage table is arranged below the storage table, a sucking pump is fixed to the top of the test box body, an air inlet of the sucking pump extends to an inner cavity of the test box body, and an air outlet of the sucking pump communicates with an air conveying pipe. The storage table is moved upwards through the lifting assembly, the space above the storage table is compressed, gas in the space above the storage table is pumped away in cooperation with the sucking pump, the concentration of corrosive gas can be reduced, meanwhile, the residual quantity of the corrosive gas can be reduced, and the corrosion resistance of the corrosive gas is improved. The problem that a large amount of corrosive gas is left after a test is finished in a traditional mixed gas corrosion test box, and consequently the experiment safety is low is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of gas corrosion test chambers, in particular to a corrosion test chamber based on mixed gas. Background Art

[0002] The gas corrosion test chamber is a measuring instrument used in the field of mechanical engineering to measure the gas corrosion rate of the object to be tested.

[0003] In the prior art, Chinese utility model publication number CN220104811U discloses a mixed gas corrosion test chamber for detecting corrosive gas concentrations. The chamber comprises a chamber with a sealed sleeve fixedly embedded in the chamber, a gas concentration monitor mounted on the chamber, and an air inlet and air outlet interface provided on the gas concentration monitor. The air inlet interface is fixedly embedded in the sealed sleeve, and a reinforcement sleeve is provided between the gas concentration monitor and the chamber. The utility model detects the gas concentration within the chamber using the gas concentration monitor, thereby ensuring that the gas concentration reaches a specified value and avoiding a significant impact on the test results. By providing filtering structures at both the air inlet and air outlet interfaces, lint and dust are prevented from entering the gas concentration monitor and affecting detection accuracy.

[0004] In the above technical solution, the mixed gas in the box is extracted through the air inlet and air outlet interfaces connected to the gas concentration detector, which will only reduce the concentration of corrosive gas in the box. When the box is opened, the corrosive gas remaining inside diffuses outward, which can easily cause corrosion to surrounding objects. Utility Model Content

[0005] The purpose of the present utility model is to provide a corrosion test chamber based on mixed gas. After the experiment is completed, the corrosive gas in the test chamber is extracted by an exhaust pump to reduce the density of the corrosive gas. Then, the storage table is moved upward by the lifting component to further compress the space above the storage table. Then, the exhaust pump is used to continuously extract the gas to minimize the amount of corrosive gas remaining in the test chamber, thereby improving the safety of the experiment and solving the problems raised in the above-mentioned background technology.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a corrosion test chamber based on mixed gas, comprising a test chamber body, the front end of the test chamber body being hinged with a double-opening sealed door by a hinge, the inner cavity of the test chamber body being movably provided with a storage table for placing test objects, a lifting assembly for lifting the storage table being provided below the storage table, an air pump being fixed to the top of the test chamber body, the air inlet of the air pump extending to the inner cavity of the test chamber body, the air outlet of the air pump being connected to an air pipe, a sealing ring being embedded on the outer side of the storage table and fitting with the test chamber body and the sealed door, and a controller being installed on the sealed door.

[0007] Preferably, the lifting assembly includes a bidirectional threaded rod that rotates in the inner cavity of the test box through a bearing, the bidirectional threaded rod is located below the storage table, the outer side of the bidirectional threaded rod is threadedly connected to a movable plate through a threaded sleeve, the outer side of the movable plate is rotatably connected to a connecting plate through a movable shaft, and the end of the connecting plate away from the movable plate is rotatably connected to the bottom of the storage table through a movable seat, a driving motor is fixed to the bottom of the test box body, the output shaft of the driving motor passes through the inner cavity of the test box body and is fixed with a driving bevel gear, and a driven bevel gear meshing with the driving bevel gear is fixed at the center of the bidirectional threaded rod.

[0008] Preferably, a protective cover is fixed on the top of the test box body, the vacuum pump is located inside the protective cover, and the air supply pipe is sealed and passes through the protective cover.

[0009] Preferably, the bottom of the test box body is connected to an air duct connected to a compressor, a connecting pipe is embedded in the interior of the storage table, and a solenoid valve is provided in the interior of the connecting pipe.

[0010] Preferably, the front and rear ends of the inner cavity of the test box are both provided with sliding grooves, the inner cavity of the sliding grooves is slidably connected with sliders, and the opposite sides of the sliders pass through the sliding grooves and are fixed to the outer side of the movable plate.

[0011] Preferably, fixing frames are fixed to the front and rear ends of both sides of the test box body, and gas cylinders are inserted into the fixing frames. The gas cylinders are connected to the test box body through an air supply pipe.

[0012] Compared with the prior art, the beneficial effects of the present invention are:

[0013] 1. The utility model moves the storage table upward by lifting the assembly, so that the space above the storage table is compressed, and then cooperates with the vacuum pump to extract the gas in the space above the storage table, which can not only reduce the concentration of corrosive gas, but also reduce the residual amount of corrosive gas, thereby avoiding the traditional mixed gas corrosion test chamber. A large amount of corrosive gas remains after the test, resulting in low experimental safety.

[0014] 2. The utility model injects compressed air into the space below the storage table in the test box through an air duct connected to the compressor, and then cooperates with the connecting pipe to dilute the corrosive gas in the upper space and accelerate the extraction of the corrosive gas by the vacuum pump. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;

[0016] Figure 2 This is a schematic diagram of the cross-sectional three-dimensional structure of the test box body of the utility model;

[0017] Figure 3 This is a schematic diagram of the three-dimensional structure of the lifting assembly of the utility model;

[0018] Figure 4 This is a schematic diagram of the three-dimensional structure of the test box body of the utility model.

[0019] Numbers in the figure: 1. Test chamber body; 2. Sealed door; 3. Storage table; 4. Lifting assembly; 41. Bidirectional threaded rod; 42. Moving plate; 43. Connecting plate; 44. Driving motor; 45. Driving bevel gear; 46. Driven bevel gear; 5. Vacuum pump; 6. Air pipe; 7. Protective cover; 8. Air guide pipe; 9. Connecting pipe; 10. Slide; 11. Slider; 12. Fixing bracket; 13. Gas cylinder. DETAILED DESCRIPTION

[0020] The following will be combined with the accompanying 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 embodiments described 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 making creative efforts are within the scope of protection of the present invention.

[0021] The utility model provides Figures 1 to 4 The illustrated embodiment shows a mixed gas-based corrosion test chamber, comprising a test chamber body 1, a double-opening sealed door 2 hingedly connected to the front end of the test chamber body 1, a storage table 3 for placing test objects movably provided in the inner cavity of the test chamber body 1, a lifting assembly 4 for lifting the storage table 3 is provided below the storage table 3, an air pump 5 is fixed to the top of the test chamber body 1, an air inlet of the air pump 5 extends into the inner cavity of the test chamber body 1, and an air outlet of the air pump 5 is connected to an air pipe 6, a sealing ring is embedded on the outer side of the storage table 3 and fits with the test chamber body 1 and the sealed door 2, and a controller is installed on the sealed door 2;

[0022] The storage table 3 is moved upward by the lifting component 4, so that the space above the storage table 3 is compressed, and then the air pump 5 is used to extract the gas in the space above the storage table 3. This can not only reduce the concentration of corrosive gas, but also reduce the residual amount of corrosive gas, thereby avoiding the traditional mixed gas corrosion test chamber from having a large amount of corrosive gas remaining after the test, resulting in low experimental safety.

[0023] The lifting assembly 4 includes a bidirectional threaded rod 41 that rotates in the inner cavity of the test box body 1 through a bearing. The bidirectional threaded rod 41 is located below the storage table 3. The outer side of the bidirectional threaded rod 41 is threadedly connected to a movable plate 42 through a threaded sleeve. The outer side of the movable plate 42 is rotatably connected to a connecting plate 43 through a movable shaft. The end of the connecting plate 43 away from the movable plate 42 is rotatably connected to the bottom of the storage table 3 through a movable seat. A driving motor 44 is fixed to the bottom of the test box body 1. The output shaft of the driving motor 44 passes through the inner cavity of the test box body 1 and is fixed with a driving bevel gear 45. A driven bevel gear 46 that meshes with the driving bevel gear 45 is fixed at the center of the bidirectional threaded rod 41. The driving bevel gear 45 is driven to rotate by the driving motor 44, and the bidirectional threaded rod 41 is driven by the driven bevel gear 46. Then the bidirectional threaded rod 41 drives the movable plates 42 on both sides to move toward each other through the threaded sleeve, and then the connecting plate 43 is used to adjust the storage table 3 to a higher or lower position.

[0024] A protective cover 7 is fixed on the top of the test box body 1, the vacuum pump 5 is located on the inner side of the protective cover 7, and the air supply pipe 6 is sealed and passes through the protective cover 7. Through the cooperation of the protective cover 7, the vacuum pump 5 is conveniently protected to avoid gas leakage at the vacuum pump 5, so as to prevent corrosive gas from spreading outward.

[0025] The bottom of the test box body 1 is connected to an air duct 8 connected to the compressor, and a connecting pipe 9 is embedded in the storage table 3. A solenoid valve is provided inside the connecting pipe 9. Compressed air is injected into the space below the storage table 3 in the test box body 1 through the air duct 8 connected to the compressor, and then cooperates with the connecting pipe 9 to dilute the corrosive gas in the upper space, while accelerating the corrosive gas to be extracted by the vacuum pump 5.

[0026] A slide groove 10 is provided at the front and rear ends of the inner cavity of the test box body 1. The inner cavity of the slide groove 10 is slidably connected with a slider 11. The opposite side of the slider 11 passes through the slide groove 10 and is fixed to the outer side of the movable plate 42. The slider 11 slides in the inner cavity of the slide groove 10, which facilitates the limiting of the movable plate 42 and prevents the movable plate 42 from shaking when moving on the bidirectional threaded rod 41, affecting the stability of the connecting plate 43, and assisting the movable plate 42 to move.

[0027] A fixing frame 12 is fixed at the front and rear ends of both sides of the test box body 1, and a gas cylinder 13 is inserted into the fixing frame 12. The gas cylinder 13 is connected to the test box body 1 through an air supply pipe. The setting of the fixing frame 12 makes it convenient to store the gas cylinder 13, and the corrosive gas is input into the test box body 1 through the air supply pipe.

[0028] During specific use, the object to be tested is stored on the storage table 3, and then the sealing door 2 is closed. After the test is completed, the driving motor 44 is started, and the driving motor 44 drives the driving bevel gear 45 to rotate, and then the driving bevel gear 45 drives the bidirectional threaded rod 41 to rotate through the driven bevel gear 46, and cooperates with the threaded sleeve to move the movable plate 42, and then the connecting plate 43 lifts the storage table 3 to reduce the space on the top of the storage table 3, and then the vacuum pump 5 is started to extract the corrosive gas remaining above the storage table 3. As the concentration of the corrosive gas decreases, the compressor is started, and the air guide pipe 8 is used to introduce compressed air into the space below the storage table 3. At the same time, the connecting pipe 9 is opened, and the air flow is used to accelerate the extraction of air above the storage table 3 to reduce the residual amount of corrosive gas.

[0029] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A corrosion test chamber based on mixed gas, comprising a test chamber body (1), characterized in that: The front end of the test box body (1) is hinged with a double-opening sealed door (2) through a hinge, the inner cavity of the test box body (1) is movably provided with a storage table (3) for placing test objects, and a lifting component (4) for lifting the storage table (3) is provided below the storage table (3), and an air pump (5) is fixed on the top of the test box body (1), the air inlet of the air pump (5) extends to the inner cavity of the test box body (1), and the air outlet of the air pump (5) is connected to an air supply pipe (6), and the outer side of the storage table (3) is embedded with a sealing ring that fits the test box body (1) and the sealed door (2), and a controller is installed on the sealed door (2).

2. A corrosion test chamber based on mixed gas according to claim 1, characterized in that: The lifting assembly (4) includes a bidirectional threaded rod (41) that rotates in the inner cavity of the test box body (1) through a bearing, and the bidirectional threaded rod (41) is located below the storage platform (3). The outer side of the bidirectional threaded rod (41) is threadedly connected to a movable plate (42) through a threaded sleeve, and the outer side of the movable plate (42) is rotatably connected to a connecting plate (43) through a movable shaft. The end of the connecting plate (43) away from the movable plate (42) is rotatably connected to the bottom of the storage platform (3) through a movable seat. A driving motor (44) is fixed to the bottom of the test box body (1), and the output shaft of the driving motor (44) passes through the inner cavity of the test box body (1) and is fixed with a driving bevel gear (45). A driven bevel gear (46) that meshes with the driving bevel gear (45) is fixed at the center of the bidirectional threaded rod (41).

3. A corrosion test chamber based on mixed gas according to claim 1, characterized in that: A protective cover (7) is fixed on the top of the test box body (1), the air pump (5) is located inside the protective cover (7), and the air supply pipe (6) is sealed and passes through the protective cover (7).

4. A corrosion test chamber based on mixed gas according to claim 1, characterized in that: The bottom of the test box body (1) is connected to an air guide pipe (8) connected to a compressor, a connecting pipe (9) is embedded in the interior of the storage table (3), and a solenoid valve is provided in the interior of the connecting pipe (9).

5. The corrosion test chamber based on mixed gas according to claim 1, characterized in that: The front and rear ends of the inner cavity of the test box body (1) are both provided with a slide groove (10), the inner cavity of the slide groove (10) is slidably connected to a slider (11), and the opposite side of the slider (11) passes through the slide groove (10) and is fixed to the outer side of the movable plate (42).

6. The corrosion test chamber based on mixed gas according to claim 1, characterized in that: A fixing frame (12) is fixed to the front and rear ends of both sides of the test box body (1), a gas storage bottle (13) is inserted into the fixing frame (12), and the gas storage bottle (13) is connected to the test box body (1) through an air supply pipe.

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