Plastic corrosion resistance testing device

Abstract

The invention relates to the technical field of testing devices, and discloses a plastic corrosion resistance testing device which comprises a testing box body, the inner wall of the testing box body is slidably connected with a detection table, the surface of the detection table is fixedly connected with a plurality of detection chambers, and a discharging assembly is installed above the detection chambers; the feeding assembly is used for adding corrosive liquid into the detection chamber, a supporting hole plate is arranged in the detection chamber, the upper end of a spring telescopic pull rod is fixedly connected with the inner side wall of the detection chamber, a first electric push rod is fixedly connected to the inner wall of the test box body, and a test adjusting assembly is arranged on the surface of the supporting hole plate. By controlling the liquid outlet to be opened or closing the liquid outlet through the sealing plug, when the liquid outlet is opened, a drop test can be performed on the plastic, and when the liquid outlet is closed, the corrosive liquid stays in the detection chamber to perform a soaking test on the plastic, so that two test modes are provided, and the flexibility and comprehensiveness of the corrosion resistance test of the plastic are improved.

Description

Technical Field

[0001] The invention relates to the technical field of testing devices, in particular to a plastic corrosion resistance testing device. Background Art

[0002] The plastic corrosion resistance test is a test that evaluates the ability of plastics to resist corrosion when exposed to various chemical substances. This is because in actual applications, plastics are used to store chemical reagents, transport chemical corrosive liquids, etc. The test can screen out plastic materials suitable for specific chemical environments. It can also be used to control the quality of plastic products to ensure that they work normally in the expected use environment and lifespan. It can also provide performance references for the research and development of new plastic materials and help improve material formulations and structures.

[0003] During the plastic corrosion resistance test, the corrosive corrosion liquid will react chemically with particulate matter in the air, which can easily cause air pollution.

[0004] After searching, the publication number CN114459983B discloses a corrosion resistance detection device for composite materials for aerospace, including a base, a servo motor and a screw. A servo motor is provided on one side of the top of the base, and the output shaft of the servo motor is connected to the screw. Through the cooperation between the clamping mechanism, the liquid discharge mechanism and the rotating mechanism, before the corrosion resistance of the composite material is tested, the composite material can be clamped, and then the atomizer is moved left and right to spray the corrosive liquid evenly onto the composite material, and then the corrosive liquid can be collected, and the corrosion resistance can be detected by observing the composite material.

[0005] In the above application, the corrosive corrosion liquid is evenly sprayed onto the composite material for testing. The testing method is relatively simple and there is a problem of incomplete test results. Summary of the invention

[0006] In view of the deficiencies in the prior art, the present invention provides a plastic corrosion resistance testing device to solve the problems that the corrosion resistance testing device easily causes air pollution, the testing method is relatively single, and the test results are incomplete.

[0007] To achieve the above objectives, the present invention is implemented through the following technical solutions: a plastic corrosion resistance testing device, comprising a test box, the inner wall of the test box is slidably connected to a test platform, the surface of the test platform is fixedly connected to a plurality of test chambers, the shape of the test chamber is set to be funnel-shaped, the bottom end of the test chamber is provided with a drain port, a discharge assembly is installed above the test chamber, the discharge assembly is used to add corrosive liquid into the test chamber, a support orifice plate is provided inside the test chamber, the support orifice plate is used to place plastic material, two spring telescopic rods are provided on the upper surface of the support orifice plate, the lower end of the spring telescopic rod is fixedly connected to the upper surface of the support orifice plate, the upper end of the spring telescopic rod is fixedly connected to the inner side wall of the test chamber, the inner wall of the test box is fixedly connected to a first electric push rod, the driving end of the first electric push rod is fixedly connected to the side wall of the test platform, and a test adjustment assembly is provided on the surface of the support orifice plate.

[0008] The test adjustment assembly includes two guide frames, two limiting long rods and a sealing plug. The bottom end of the guide frame is fixedly connected to the upper surface of the supporting orifice plate. The guide frame is tilted. One end of the limiting long rod is fixedly connected to the inner wall of the test box. The sealing plug is fixedly installed on the lower surface of the supporting orifice plate. The sealing plug is located directly above the drain port.

[0009] The test adjustment component also includes a slide groove, which is arranged on the surface of the supporting orifice plate. Clamping plates are slidably connected to both sides of the slide groove, and the clamping plates are located inside the detection chamber.

[0010] A first spring is fixedly connected to the side wall of the clamping plate, and one end of the first spring away from the clamping plate is fixedly connected to the inner wall of the slide groove. The outer side wall of the clamping plate is fixedly connected to a limiting rope, and one end of the limiting rope away from the clamping plate passes through the supporting hole plate and is fixedly connected to the inner wall of the detection chamber.

[0011] Preferably, an activated carbon purifier is fixedly connected to the inner bottom wall of the test box, and the adsorption material of the activated carbon purifier is activated carbon impregnated with alkaline substances.

[0012] Preferably, the discharge assembly includes an electric slide, the outer wall of the electric slide is fixedly connected to the inner wall of the test box, the lower surface of the electric slide is fixedly connected to an upper tube body, the outer wall of the upper tube body is slidably connected to a lower tube body, a nozzle body is fixedly provided at the bottom end of the lower tube body, the nozzle body adopts an ordinary nozzle or an atomizing nozzle, the lower side wall of the upper tube body is fixedly connected to a sealing piston ring, the inner wall of the lower tube body is fixedly connected to a sealing head, and a flow hole is opened on the surface of the sealing head.

[0013] Preferably, the outer side wall of the lower tube body is fixedly connected to two connecting rods, and one end of the connecting rod away from the lower tube body is rotatably connected to a moving wheel, and a limit frame is arranged below the moving wheel, and both ends of the limit frame are fixedly connected to the inner wall of the test box body, and the upper surface of the limit frame protrudes upward to form a limit protrusion, and the upper surface of the limit frame is symmetrically provided with a plurality of liquid outlet grooves along the lower tube body, and the liquid outlet grooves are set to be V-shaped or semicircular.

[0014] Preferably, the discharge assembly also includes a collecting cylinder, a storage box and a collecting pipe, the lower surface of the collecting cylinder is fixedly connected to the inner bottom wall of the test box, the lower surface of the storage box is fixedly connected to the upper surface of the test box, the upper surface of the collecting pipe is fixedly connected with a plurality of connecting ends, the top of the connecting end is fixedly connected to the bottom end of the detection chamber, the collecting pipe is inclined, one end of the collecting pipe is fixedly provided with a drain pipe, the other end of the drain pipe is fixedly connected to the collecting cylinder, the lower side wall of the storage box is fixedly connected with a connecting pipe, the other end of the connecting pipe passes through the test box and is fixedly connected to the upper surface of the upper tube body, the inner wall of the test box is fixedly connected with a placing table, and the placing table is used to place the connecting pipe.

[0015] Preferably, the collecting cylinder is set to be an inverted convex shape, the top end of the collecting cylinder is fixedly connected to a second electric push rod, the driving end of the second electric push rod is fixedly connected to a piston plate, a return pipe is fixedly arranged at the center of the lower surface of the collecting cylinder, the other end of the return pipe is fixedly connected to the upper side wall of the storage box, a cleaning end is fixedly arranged on the outer wall of the return pipe, and a valve is fixedly arranged on the cleaning end.

[0016] Preferably, an adding end and an air pressure sensor are fixedly provided on the upper surface of the storage box, a sealing cover is threadedly connected to the adding end, a discharge end with a valve is fixedly provided on the lower side wall of the storage box, an air pipe is fixedly connected to the upper surface of the storage box, one end of the air pipe away from the storage box is fixedly connected to the upper surface of the test box body, and a solenoid valve is fixedly provided on the outer wall of the air pipe.

[0017] Working principle: When it is necessary to test the corrosion resistance of plastics, open the sealing cover and add the corrosive liquid into the storage box, then screw on the sealing cover, open the door of the test box, run the first electric push rod to extend and push the test table and the test chamber to the box opening of the test box, and at this time, the supporting hole plate is pulled by the tension of the spring telescopic pull rod to keep the supporting hole plate above the test chamber, so as to facilitate the test personnel to take or place the plastic to be tested. After the placement is completed, close the box door, and the first electric push rod is retracted to drive the test table to move into the test box, and the limit long rod is used to resist the guide frame to apply a downward thrust to the test hole plate, driving the supporting hole plate and the sealing plate below. The sealing plug descends inside the detection chamber, and the corrosive liquid is intercepted by the detection chamber to avoid splashing when the corrosive liquid is added, and the descending distance of the sealing plug can be controlled by controlling the contraction distance of the first electric push rod, so that when the sealing plug tightly blocks the drain port, the corrosive liquid stays in the inside of the adding chamber to perform an immersion test on the plastic, and when a gap is left between the sealing plug and the drain port, the corrosive liquid is discharged from the drain port. At this time, a drip test can also be performed on the plastic, so that the test method for the plastic can be flexibly adjusted to improve the flexibility and comprehensiveness of the test. After the test is completed, the plastic is taken out to observe the degree of corrosion to judge its anti-corrosion effect.

[0018] When the support orifice plate is maintained above the detection chamber, the length of the limiting rope is used to limit the sliding of the clamping plate at the edge of the slide slot, so that the two clamping plates are opened to facilitate the placement of the plastic. When the support orifice plate is maintained below the inside of the detection chamber, the clamping plate tightly clamps the plastic through the elastic force of the first spring, thereby limiting the position of the plastic, so that the plastic remains stable during testing, and at the same time avoids the floating of the plastic due to buoyancy during the immersion test, resulting in incomplete testing. The device clamps or releases the plastic through the clamping plate, and no operator control is required, thereby avoiding direct contact by the operator, thereby reducing the chance of corrosion to the operator.

[0019] The moving wheel is pressed against the limit frame so that the sealing head is inserted into the bottom pipe opening of the upper tube body, thereby blocking the upper tube body to prevent the corrosive liquid from flowing out. When the corrosive liquid is added, the moving electric slide drives the nozzle body to move. When the nozzle body moves to the top of the detection chamber, the moving wheel moves into the liquid outlet groove, so that the lower tube body descends under the action of gravity, so that the sealing head is separated from the upper tube body. At this time, the corrosive liquid in the storage box flows through the connecting pipe, the upper tube body, the lower tube body and the nozzle body, and is finally sprayed out from the nozzle body onto the plastic surface, thereby realizing the addition of the corrosive liquid. The amount of corrosive liquid added can be controlled by controlling the stop time of the electric slide. The device drives the nozzle body to move horizontally through the electric slide, so as to realize the automatic opening and closing of the nozzle body.

[0020] After the corrosive liquid in the detection room is used up, it enters the collecting cylinder through the connecting end, the collecting pipe and the discharge end, the solenoid valve is opened, and the piston plate is pushed down by the extension of the second electric push rod, so that the gas and the corrosive liquid in the lower side of the collecting cylinder are squeezed into the storage box through the reflux pipe, so as to realize the reuse of the corrosive liquid and save costs. After the effect of the corrosive liquid is reduced after multiple uses, the cleaning end can be opened to discharge the corrosive liquid, so as to replace the corrosive liquid. Before adding the corrosive liquid, the second electric push rod is extended to push the piston plate down, so that the gas enters the interior of the storage box, so that the pressure inside the storage box increases, thereby providing a relatively high pressure for the ejection of the corrosive liquid to ensure the normal ejection of the corrosive liquid from the nozzle body, so that when the corrosive liquid is added and refluxed, there is no need for a delivery pump to transport it, so the addition and recycling of the corrosive liquid can be realized, thereby reducing costs.

[0021] The present invention provides a plastic corrosion resistance testing device, which has the following beneficial effects:

[0022] 1. The present invention controls the drain port to be opened or closed through a sealing plug. When the drain port is opened, a drip test can be performed on the plastic. When the drain port is closed, the corrosive liquid stays in the detection chamber to perform an immersion test on the plastic, thereby providing two test methods and improving the flexibility and comprehensiveness of the plastic corrosion resistance test.

[0023] 2. The present invention drives the clamping plate to open and close automatically by lifting the supporting hole plate, so that the plastic can be clamped or released automatically without the need for operator control, thereby reducing the operator's direct operating environment, reducing the probability of corrosion to the operator, and improving the safety of the test.

[0024] 3. The present invention drives the nozzle body to move by an electric slide, and adds the corrosive liquid to the detection chamber in turn. The nozzle body can be automatically opened and closed when moving, thereby realizing automatic material addition and reducing manual operation links.

[0025] 4. The present invention can realize the recycling of the corrosive liquid and reduce waste through the coordinated use of the second electric push rod and the piston plate, and can increase the pressure in the storage box to assist the ejection of the corrosive liquid, thereby eliminating the need for an additional delivery pump and reducing costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 A perspective view of the present invention;

[0027] Figure 2 It is a partial cross-sectional schematic diagram of the test box of the present invention;

[0028] Figure 3 It is a schematic diagram of the structure of the detection platform of the present invention;

[0029] Figure 4 It is a schematic diagram of the internal structure of the detection chamber of the present invention;

[0030] Figure 5 It is a cross-sectional schematic diagram of the detection chamber of the present invention;

[0031] Figure 6 It is a schematic diagram of the structure of the discharge assembly of the present invention;

[0032] Figure 7 For the present invention Figure 6 A magnified image of point A;

[0033] Figure 8 For the present invention Figure 6 The enlarged view of point B;

[0034] Fig. 9 For the present invention Figure 6 Enlarged view of point C;

[0035] Fig.10 It is a schematic diagram of the limiting frame structure of the present invention;

[0036] Fig.11 It is a schematic cross-sectional view of the lower tube body of the present invention.

[0037] Among them, 1. test box; 3. test table; 4. test room; 5. material discharge assembly; 501. electric slide; 502. upper tube; 503. nozzle body; 505. sealing piston ring; 506. liquid outlet tank; 507. sealing head; 508. connecting rod; 509. moving wheel; 510. limit frame; 511. limit protrusion; 512. second electric push rod; 513. air pipe; 514. lower tube; 515. solenoid valve; 516. collection Collecting cylinder; 517, storage box; 518, collecting pipe; 519, connecting end; 520, drain pipe; 521, piston plate; 522, reflux pipe; 523, connecting pipe; 6, supporting orifice plate; 7, spring telescopic pull rod; 8, test adjustment component; 81, guide frame; 82, limiting long rod; 83, sealing plug; 84, slide groove; 85, clamping plate; 86, first spring; 87, limiting rope; 10, first electric push rod; 11, activated carbon purifier. DETAILED DESCRIPTION

[0038] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings 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.

[0039] Example:

[0040] Please refer to the attached Figure 1 -Attached Figure 3The embodiment of the present invention provides a plastic corrosion resistance testing device, including a testing box 1, the inner wall of the testing box 1 is slidably connected with a testing platform 3, the surface of the testing platform 3 is fixedly connected with a plurality of testing chambers 4, the testing chamber 4 is funnel-shaped, the bottom end of the testing chamber 4 is provided with a drain port, a discharge assembly 5 is installed above the testing chamber 4, the discharge assembly 5 is used to add corrosive liquid into the testing chamber 4, a supporting orifice plate 6 is provided inside the testing chamber 4, a hole is opened on the surface of the supporting orifice plate 6 for the corrosive liquid to flow through the supporting orifice plate 6, the supporting orifice plate 6 is used to place plastic material, and two spring telescopic pull rods 7 are provided on the upper surface of the supporting orifice plate 6, the lower end of the spring telescopic pull rod 7 is fixedly connected to the upper surface of the supporting orifice plate 6, and the upper end of the spring telescopic pull rod 7 is connected to the upper surface of the supporting orifice plate 6. The inner wall of the detection chamber 4 is fixedly connected, and the inner wall of the test box body 1 is fixedly connected with a first electric push rod 10, and the driving end of the first electric push rod 10 is fixedly connected to the side wall of the detection platform 3. The surface of the supporting orifice plate 6 is provided with a test adjustment component 8, and the test box body 1 includes a sealed box body and a sealed box door, wherein the sealed box body and the sealed box door belong to the prior art and are not described in detail here. A controller is fixedly arranged on the outside of the sealed box door, and the controller is electrically connected to the first electric push rod 10 for controlling the operation of the first electric push rod 10. The sealed box door is closed during the test for sealing to prevent gas overflow. The spring telescopic pull rod 7 includes an upper cylinder and a lower rod body slidably connected thereto, and a tension spring is fixedly arranged on the top wall of the upper cylinder, and the bottom end of the tension spring is fixedly connected to the top end of the lower rod body.

[0041] Specifically, the testing table 3 is used to fix the testing chamber 4, the testing chamber 4 is used to temporarily store the corrosive liquid for testing, the drain port is used to discharge the corrosive liquid in the testing chamber 4, the first electric push rod 10 is used to push the testing table 3 and the testing chamber 4 to move in or out of the test box 1, so that the testing chamber 4 can be switched by the discharge assembly 5 and the box opening of the test box 1, the supporting orifice plate 6 is used to place the plastic parts to be tested, and the spring telescopic pull rod 7 is used to apply an upward pulling force to the supporting orifice plate 6, so that the supporting orifice plate 6 is maintained above the inside of the testing chamber 4 in the initial state, and when the testing table 3 moves to the box opening, it is convenient for the tester to place or take the plastic.

[0042] Please refer to the attached Figure 3 -Attached Figure 4 The test adjustment assembly 8 includes two guide frames 81, two limiting long rods 82 and a sealing plug 83. The bottom end of the guide frame 81 is fixedly connected to the upper surface of the supporting orifice plate 6. The guide frame 81 is tilted. One end of the limiting long rod 82 is fixedly connected to the inner wall of the test box 1. The sealing plug 83 is fixedly installed on the lower surface of the supporting orifice plate 6. The sealing plug 83 is located directly above the drain port.

[0043] Specifically, the limiting long rod 82 is located on the moving track of the guide frame 81. When the detection platform 3 moves into the test box 1, the limiting long rod 82 is used to resist the guide frame 81 for limiting, and exert downward pressure on the guide frame 81, driving the supporting orifice plate 6 and the plastic to descend to the bottom of the detection chamber 4, so that the detection chamber 4 can intercept the corrosive liquid sprayed on the surface of the plastic to prevent splashing, and by controlling the telescopic distance of the first electric push rod 10, the distance between the sealing plug 83 and the drain port can be controlled. When the sealing plug 83 descends until it blocks the drain port, an immersion test can be performed, and when there is a gap between the sealing plug 83 and the drain port, the corrosive liquid can be discharged or a drip test can be performed, thereby increasing the test methods and improving the comprehensiveness of plastic testing.

[0044] Please refer to the attached Figure 4 -Attached Figure 5 The test adjustment component 8 also includes a slide groove 84, which is opened on the surface of the supporting hole plate 6. Clamping plates 85 are slidably connected on both sides of the slide groove 84. The clamping plate 85 is located inside the detection chamber 4. The side wall of the clamping plate 85 is fixedly connected with a first spring 86. The end of the first spring 86 away from the clamping plate 85 is fixedly connected to the inner wall of the slide groove 84. The outer wall of the clamping plate 85 is fixedly connected with a limiting rope 87. The end of the limiting rope 87 away from the clamping plate 85 passes through the supporting hole plate 6 and is fixedly connected to the inner wall of the detection chamber 4. The pulling force of the spring telescopic pull rod 7 is greater than the elastic force of the first spring 86.

[0045] Specifically, the slide groove 84 is used to limit the sliding direction of the clamping plate 85. The clamping plate 85 is tightly pressed against the plastic by the elastic force of the first spring 86, so that it is fixed on the supporting hole plate 6. When the supporting hole plate 6 is located above the inside of the detection chamber 4, the clamping plate 85 is pulled by the limiting rope 87, so that the two clamping plates 85 slide open, thereby facilitating the placement of the plastic between the two clamping plates 85. After the supporting hole plate 6 descends, the tension applied to the clamping plate 85 by the limiting rope 87 disappears, and the clamping plate 85 is pressed against the plastic by the elastic force of the first spring 86, thereby realizing the automatic opening and closing of the clamping plate 85 without manual operation, thereby improving safety.

[0046] Please refer to the attached Figure 2 An activated carbon purifier 11 is fixedly connected to the inner bottom wall of the test box 1. The adsorption material of the activated carbon purifier 11 is activated carbon impregnated with alkaline substances. The activated carbon purifier 11 belongs to the prior art and is not described here. The controller is electrically connected to the activated carbon filter for controlling the operation of the activated carbon filter.

[0047] Specifically, the activated carbon purifier 11 is used to purify the air inside the test box 1, and the use of activated carbon impregnated with alkaline substances can better absorb acidic gases and reduce air pollution.

[0048] Please refer to the attached Figure 6 -Attached Fig.11 The discharge assembly 5 includes an electric slide 501. The controller moves with the electric slide 501 and is used to control the operation of the electric slide 501. The outer wall of the electric slide 501 is fixedly connected to the inner wall of the test box 1. The lower surface of the electric slide 501 is fixedly connected with an upper tube body 502. The outer wall of the upper tube body 502 is slidably connected with a lower tube body 514. A nozzle body 503 is fixedly provided at the bottom end of the lower tube body 514. The nozzle body 503 adopts an ordinary nozzle or an atomizing nozzle. A sealing piston ring 505 is fixedly connected to the lower side wall of the upper tube body 502. A sealing head 507 is fixedly connected to the inner wall of the lower tube body 514. A flow hole is opened on the surface of the sealing head 507.

[0049] Specifically, the electric slide 501 is used to drive the upper tube body 502, the lower tube body 514 and the nozzle body 503 to move. During the drip test, the contraction amplitude of the first electric push rod 10 is controlled when the detection chamber 4 moves to just below the nozzle body 503, so that the nozzle body 503 can spray the corrosive liquid relatively comprehensively on the upper surface of the plastic body. The sealing piston ring 505 is used to seal between the upper tube body 502 and the lower tube body 514 to prevent leakage. The sealing head 507 is used to block the upper tube body 502 when the upper tube body 502 and the lower tube body 514 are contracted to prevent the corrosive liquid from flowing out, thereby closing the nozzle body 503. When the upper tube body 502 and the lower tube body 514 are expanded, the sealing head 507 is separated from the upper tube body 502, allowing the corrosive liquid to flow out, thereby opening and closing the nozzle body 503.

[0050] Please refer to the attached Figure 9-10 Two connecting rods 508 are fixedly connected to the outer wall of the lower tube body 514, and one end of the connecting rod 508 away from the lower tube body 514 is rotatably connected to a moving wheel 509. A limit frame 510 is arranged below the moving wheel 509. Both ends of the limit frame 510 are fixedly connected to the inner wall of the test box 1. The upper surface of the limit frame 510 protrudes upward to form a limit protrusion 511. A plurality of liquid outlet grooves 506 are symmetrically opened on the upper surface of the limit frame 510 along the lower tube body 514. The liquid outlet grooves 506 are set to be V-shaped or semicircular. The V-shaped liquid outlet grooves 506 make it smoother for the moving wheel 509 to move in or out. The diameter of the semicircular liquid outlet grooves 506 is the same as the diameter of the moving wheel 509.

[0051] Specifically, the connecting rod 508 is used to connect the moving wheel 509 and the lower tube body 514, and the limiting frame 510 is used to support the moving wheel 509. When the moving wheel 509 moves on the limiting frame 510, the lower tube body 514 is pushed to move upward, so that the sealing head 507 blocks the upper tube body 502. When the moving wheel 509 moves to the liquid outlet groove 506, the nozzle body 503 moves to the top of the detection chamber 4. At this time, the lower tube body 514 slides down by its own gravity to open the upper tube body 502. The limiting protrusion 511 is used to limit the moving wheel 509 to prevent it from deviating and falling off from the limiting frame 510. The center points of the liquid outlet grooves 506 on the front and rear sides of the detection chamber 4 are maintained on the same vertical plane as the center point of the detection chamber 4. By moving the moving wheel 509 on the limiting frame 510, the nozzle body 503 can be opened and closed in turn to add corrosive liquid without using manual valves or electric valves for control, thereby reducing manual operation links, improving safety or reducing use and maintenance costs.

[0052] Please refer to the attached Figure 6 -Attached Fig. 9 The discharge assembly 5 also includes a collecting cylinder 516, a storage box 517 and a collecting pipe 518. The lower surface of the collecting cylinder 516 is fixedly connected to the inner bottom wall of the test box body 1, the lower surface of the storage box 517 is fixedly connected to the upper surface of the test box body 1, and the upper surface of the collecting pipe 518 is fixedly connected with a plurality of connecting ends 519. The top of the connecting end 519 is fixedly connected to the bottom end of the detection chamber 4. The collecting pipe 518 is tilted, which is more conducive to the flow of the corrosive liquid inside it. A drain pipe 520 is fixedly provided at one end of the collecting pipe 518, and the other end of the drain pipe 520 is fixedly connected to the collecting cylinder 516. A connecting pipe 523 is fixedly connected to the lower side wall of the storage box 517. The other end of the connecting pipe 523 penetrates the test box body 1 and is fixedly connected to the upper surface of the upper tube body 502. The connecting pipe 523 adopts a hose, and a placement table is fixedly connected to the inner wall of the test box body 1. The placement table is used to place the connecting pipe 523.

[0053] Specifically, the storage box 517 is used to store corrosive liquid, and the connecting end 519 is used to connect the drain port and the collecting tube 518, so that the corrosive liquid inside the detection chamber 4 flows into the collecting tube 516 through the drain port, the connecting end 519, the collecting tube 518 and the connecting tube 523 for collection, so that it can be recycled and reused to reduce waste.

[0054] Please refer to the attached Figure 7-8The collecting cylinder 516 is set to be inverted convex shape, and an air hole is opened on the upper surface of the collecting cylinder 516. The top of the collecting cylinder 516 is fixedly connected to the second electric push rod 512. The controller is electrically connected to the second electric push rod 512 for controlling the operation of the second electric push rod 512. The driving end of the second electric push rod 512 is fixedly connected to the piston plate 521. A return pipe 522 is fixedly set at the center of the lower surface of the collecting cylinder 516. The return pipe 522 runs through the storage box 517, and the intersection of the two is sealed. The other end of the return pipe 522 is fixedly connected to the upper side wall of the storage box 517. A cleaning end is fixedly set on the outer wall of the return pipe 522, and a valve is fixedly set on the cleaning end. The valve is used to cut off or conduct the cleaning end. When the cleaning end is opened, it is used to discharge the corrosive liquid in the collecting cylinder 516.

[0055] Specifically, the collecting cylinder 516 is provided with an upper cavity of a larger size and a lower cavity of a smaller size. The diameter of the piston plate 521 is the same as the inner diameter of the lower cavity. The second electric push rod 512 is used to adjust the height of the piston plate 521. When the piston plate 521 is located inside the upper cavity, the corrosive liquid flows at the bottom of the collecting cylinder 516. When the piston plate 521 descends to the bottom of the lower cavity, the corrosive liquid and gas in the lower cavity are pushed into the storage box 517 through the reflux pipe 522, so as to realize automatic recycling of the corrosive liquid. Since the density of the corrosive liquid is much greater than that of the gas, under the pressure of the piston plate 521, the corrosive liquid below is pushed into the storage box 517. The liquid is first pushed into the return pipe 522, and then the gas is pushed into the return pipe 522, thereby avoiding excessive residual corrosive liquid in the return pipe 522 and the collecting tube 516. When the corrosive liquid is added, the second electric push rod 512 drives the piston plate 521 to descend, so that the gas enters the storage box 517 from the return pipe 522, increasing the pressure in the storage box 517, which is conducive to the corrosive liquid being ejected from the nozzle body 503. The device can realize the recovery of corrosive liquid and the auxiliary discharge of corrosive liquid through the second electric push rod 512 and the piston plate 521, so that there is no need to add a delivery pump to deliver the corrosive liquid, thereby reducing costs.

[0056] Please see attached Figure 7 An adding end and an air pressure sensor are fixedly provided on the upper surface of the storage box 517, a sealing cover is threadedly connected to the adding end, a discharge end with a valve is fixedly provided on the lower side wall of the storage box 517, an air pipe 513 is fixedly connected to the upper surface of the storage box 517, one end of the air pipe 513 away from the storage box 517 is fixedly connected to the upper surface of the test box body 1, an electromagnetic valve 515 is fixedly provided on the outer wall of the air pipe 513, and a controller is electrically connected to the electromagnetic valve 515 and the air pressure sensor for controlling the operation of the electromagnetic valve 515 and the air pressure sensor.

[0057] Specifically, the adding end is used to add corrosive liquid to the storage box 517, the sealing cover is used to seal the adding end, the drain end is used to drain the liquid in the storage box 517, the solenoid valve 515 is used to cut off or conduct the air pipe 513, and the air pipe 513 is only opened when the corrosive liquid is recovered to avoid excessive pressure inside the storage box 517, thereby affecting the corrosive liquid and gas flowing into the storage box 517, and the other end of the air pipe 513 is connected to the test box 1 to avoid pollution caused by gas escape. The air pressure sensor is used to detect the air pressure inside the storage box 517 when adding corrosive liquid. When the air pressure drops when the liquid flows out, the signal is transmitted to the controller. The controller controls the second electric push rod 512 to extend again to input gas into the storage box 517, so that the gas in the storage box 517 can always be maintained at a certain threshold, thereby avoiding excessive or low pressure inside the storage box 517.

[0058] 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 plastic corrosion resistance testing device, comprising a testing box (1), characterized in that: The inner wall of the test box (1) is slidably connected to a detection platform (3), and a plurality of detection chambers (4) are fixedly connected to the surface of the detection platform (3). The detection chamber (4) is funnel-shaped, and a liquid discharge port is provided at the bottom of the detection chamber (4). A discharge assembly (5) is installed above the detection chamber (4), and the discharge assembly (5) is used to add corrosive liquid into the detection chamber (4). A support orifice plate (6) is provided inside the detection chamber (4), and the support orifice plate (6) is used to place plastic material. The upper surface of the supporting hole plate (6) is provided with two spring telescopic pull rods (7), the lower ends of the spring telescopic pull rods (7) are fixedly connected to the upper surface of the supporting hole plate (6), the upper ends of the spring telescopic pull rods (7) are fixedly connected to the inner wall of the detection chamber (4), the inner wall of the test box (1) is fixedly connected with a first electric push rod (10), the driving end of the first electric push rod (10) is fixedly connected to the side wall of the detection platform (3), and the surface of the supporting hole plate (6) is provided with a test adjustment component (8); The test adjustment assembly (8) comprises two guide frames (81), two limiting long rods (82) and a sealing plug (83); the bottom end of the guide frame (81) is fixedly connected to the upper surface of the supporting orifice plate (6); the guide frame (81) is arranged obliquely; one end of the limiting long rod (82) is fixedly connected to the inner wall of the test box (1); the sealing plug (83) is fixedly installed on the lower surface of the supporting orifice plate (6); and the sealing plug (83) is located directly above the liquid discharge port; The test adjustment component (8) also includes a slide groove (84), which is opened on the surface of the supporting hole plate (6), and the two sides of the slide groove (84) are respectively slidably connected with clamping plates (85), and the clamping plates (85) are located inside the detection chamber (4); the side wall of the clamping plate (85) is fixedly connected with a first spring (86), and the end of the first spring (86) away from the clamping plate (85) is fixedly connected to the inner wall of the slide groove (84), and the outer wall of the clamping plate (85) is fixedly connected with a limiting rope (87), and the end of the limiting rope (87) away from the clamping plate (85) passes through the supporting hole plate (6) and is fixedly connected to the inner wall of the detection chamber (4).

2. A plastic corrosion resistance testing device according to claim 1, characterized in that: An activated carbon purifier (11) is fixedly connected to the inner bottom wall of the test box (1), and the adsorption material of the activated carbon purifier (11) is activated carbon impregnated with alkaline substances.

3. A plastic corrosion resistance testing device according to claim 1, characterized in that: The discharge assembly (5) includes an electric slide (501), the outer wall of the electric slide (501) is fixedly connected to the inner wall of the test box (1), the lower surface of the electric slide (501) is fixedly connected to an upper tube body (502), the outer wall of the upper tube body (502) is slidably connected to a lower tube body (514), a nozzle body (503) is fixedly arranged at the bottom end of the lower tube body (514), a sealing piston ring (505) is fixedly connected to the lower side wall of the upper tube body (502), and a sealing head (507) is fixedly connected to the inner wall of the lower tube body (514), and a flow hole is opened on the surface of the sealing head (507).

4. A plastic corrosion resistance testing device according to claim 3, characterized in that: The outer side wall of the lower tube (514) is fixedly connected to two connecting rods (508); one end of the connecting rod (508) away from the lower tube (514) is rotatably connected to a moving wheel (509); a limit frame (510) is arranged below the moving wheel (509); two ends of the limit frame (510) are fixedly connected to the inner wall of the test box (1); the upper surface of the limit frame (510) protrudes upward to form a limit protrusion (511); and a plurality of liquid outlet grooves (506) are symmetrically provided on the upper surface of the limit frame (510) along the lower tube (514).

5. A plastic corrosion resistance testing device according to claim 4, characterized in that: The discharge assembly (5) further comprises a collecting cylinder (516), a storage box (517) and a collecting tube (518); the lower surface of the collecting cylinder (516) is fixedly connected to the inner bottom wall of the test box (1); the lower surface of the storage box (517) is fixedly connected to the upper surface of the test box (1); the upper surface of the collecting tube (518) is fixedly connected to a plurality of connecting ends (519); the top end of the connecting end (519) is fixedly connected to the bottom end of the detection chamber (4); the collecting tube (518) ) is arranged obliquely, a drainage pipe (520) is fixedly arranged at one end of the collecting pipe (518), the other end of the drainage pipe (520) is fixedly connected to the collecting cylinder (516), a connecting pipe (523) is fixedly connected to the lower side wall of the storage box (517), the other end of the connecting pipe (523) passes through the test box body (1) and is fixedly connected to the upper surface of the upper tube body (502), and a placing table is fixedly connected to the inner wall of the test box body (1), and the placing table is used to place the connecting pipe (523).

6. A plastic corrosion resistance testing device according to claim 5, characterized in that: The collecting cylinder (516) is configured to be in an inverted convex shape, the top end of the collecting cylinder (516) is fixedly connected to a second electric push rod (512), the driving end of the second electric push rod (512) is fixedly connected to a piston plate (521), a return pipe (522) is fixedly provided at the center of the lower surface of the collecting cylinder (516), and the other end of the return pipe (522) is fixedly connected to the upper side wall of the storage box (517).

7. A plastic corrosion resistance testing device according to claim 5, characterized in that: The upper surface of the storage box (517) is fixedly provided with an addition end and an air pressure sensor, a sealing cover is threadedly connected to the addition end, a discharge end with a valve is fixedly provided on the lower side wall of the storage box (517), an air pipe (513) is fixedly connected to the upper surface of the storage box (517), one end of the air pipe (513) away from the storage box (517) is fixedly connected to the upper surface of the test box (1), and an electromagnetic valve (515) is fixedly provided on the outer wall of the air pipe (513).

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