A corrosion resistance detection device for PFA engineering plastic production

Abstract

The invention discloses a corrosion resistance detection device for PFA engineering plastic production, which relates to the technical field of corrosion resistance detection of engineering plastics, and comprises a box body; a feeding assembly is fixedly installed on the top of one end of the box body; the feeding assembly comprises two symmetrically arranged brackets; a first rotating wheel and a first rotating roller are arranged between the two brackets; two first rotating wheels are arranged, and one of the first rotating wheels is fixedly installed with a stepping motor; a belt is cooperatedly installed between the two first rotating wheels, and the belt is provided with raised serrations; a plurality of samples are placed in a placement rack on the top of the bracket, and one of the first rotating wheels is driven to rotate by a stepping motor to realize the rotation of the belt between the two first rotating wheels. During the rotation of the belt, the raised serrations arranged on the belt increase the contact with the sample, so that the samples at the bottom of the placement rack are automatically fed one by one.

Description

Technical Field

[0001] The invention specifically relates to the technical field of corrosion resistance detection of engineering plastics, in particular to a corrosion resistance detection device for the production of PFA engineering plastics. Background Art

[0002] Plastic corrosion resistance testing is an important test to evaluate the ability of plastic materials to resist chemical erosion in a specific corrosive environment. Plastic samples are usually immersed in a corrosive solution for a period of time to observe changes in appearance, weight, size, etc. to evaluate corrosion resistance; for example, plastics are immersed in acid, alkali, and salt solutions;

[0003] However, when conducting corrosion resistance tests on traditional engineering plastics, the engineering plastics are manually placed in a corrosive solution and then taken out for testing after a certain period of time. This has low work efficiency. During the test, the corrosive solution attached to the engineering plastics may cause certain harm to the workers. When a large number of plastic samples need to be tested, the traditional testing method has low work efficiency and cannot effectively select the most corrosion-resistant engineering plastics.

[0004] After searching, Chinese Patent Publication No. CN202211375412.4 is a corrosion-resistant detection device for high-strength engineering plastic processing; comprising a shell provided on the inner side of the box body, a filter screen fixedly connected to the bottom inner wall of the shell body, a shell fixedly connected to the bottom of the box body, a horizontal plate fixedly connected to the lower side of one side of the box body, a square box fixedly connected to the top of the horizontal plate, a plate body fixedly connected to one side of the top of the box body, a material box fixedly connected to the upper side of one side of the plate body, a square plate fixedly connected to the other side of the top of the box body, one end of the square plate fixedly connected to a frame body, high-strength engineering plastics are bonded to the inside of the shell body, a moving structure is provided on one side of the square box, a shaking structure is provided on one side of the shell body, a delivery structure is provided on one side of the square plate, and a stabilizing structure is provided on one side of the shell;

[0005] The structure in the above patent, when testing the corrosion resistance of engineering plastics, drives the engineering plastics to shake through the shell. Although this can realize the testing of engineering materials, the corrosive liquid cannot effectively immerse the engineering plastics as a whole during the shaking of the shell, and the corrosive liquid may leak, which will result in incomplete testing of the engineering plastics. When observing the corrosion of the engineering plastics, the corrosion resistance of the engineering materials cannot be effectively understood through the two observation windows. Therefore, the structure in the above patent still has many technical defects.

[0006] The invention discloses a corrosion resistance detection device for PFA engineering plastic production. In the device, a loading component is used to realize automatic loading of samples to be detected. The samples fall into a corrosion liquid tank. The upper surface of the samples is contacted with a pressure rod by the flotation of the corrosion liquid. The end of the pressure rod is located inside the corrosion liquid tank, so that the upper surface of the samples is effectively guaranteed to be located inside the corrosion liquid. Then, two conveyor belts are driven by a driving motor respectively, so that adjacent paddles on the conveyor belts clamp and push the samples. The samples are moved away from the corrosion liquid tank into a clean water tank through the conveyor belts. The corrosion liquid remaining on the surface of the samples is effectively sprayed by a second circulating pump. The clean water is filtered by a filter rack and a filter pump. The samples are driven by the conveyor belts to move to the other end of the box body. The first mechanical clamp moves on the second slide rail to transfer the samples to the corrosion resistance detection structure. The corrosion resistance of the sample surface is effectively detected by a microscope. After the detection is completed, the second mechanical clamp moves along the first slide rail to place the detected samples on a placement table. The device can realize the automatic detection effect of engineering plastic samples and reduce manual participation. Summary of the invention

[0007] The purpose of the present invention is to provide a corrosion-resistant detection device for the production of PFA engineering plastics, wherein the end of a pressure rod is located inside a corrosive liquid tank, thereby effectively ensuring that the upper surface of a sample is located inside the corrosive liquid, and then driving two conveyor belts respectively through a driving motor, so that adjacent paddles on the conveyor belts clamp and push the sample, and the sample is moved away from the corrosive liquid tank into a clean water tank through the conveyor belt, and the corrosive liquid remaining on the surface of the sample is effectively sprayed through a second circulating pump, and the clean water is filtered through a filter rack and a filter pump. Driven by the conveyor belt, the sample moves to the other end of the box, and moves on the second slide rail through a first mechanical clamp to transfer the sample to a corrosion-resistant detection structure, and the corrosion resistance of the sample surface is effectively detected and processed through a microscope; so as to solve the technical problems mentioned in the above-mentioned background technology.

[0008] To achieve the above object, the present invention provides the following technical solutions:

[0009] A corrosion-resistant detection device for the production of PFA engineering plastics, comprising a box body; a feeding assembly is fixedly installed on the top of one end of the box body; the feeding assembly comprises two symmetrically arranged brackets; a first rotating wheel and a first rotating roller are arranged between the two brackets; two first rotating wheels are arranged, one of which is fixedly installed with a stepping motor; a belt is installed between the two first rotating wheels, and the belt is provided with raised saw teeth; in this way, when the belt rotates, the raised saw teeth contact with the sample at the bottom of the placement rack, so that the sample is separated from the feeding assembly, and the effect of automatically feeding the samples one by one is achieved;

[0010] The first roller is arranged at one end of the support frame and cooperates with the first rotating wheel at the end; a placement rack is also arranged at the top of the support frame, and a plurality of samples are placed inside the placement rack; a first rotating wheel is arranged at the middle bottom of the placement rack; thus, the support of the samples inside the placement rack can be effectively realized through the first rotating wheel at the bottom of the placement rack.

[0011] The top of the box is provided with a transmission assembly; the transmission assembly includes two conveyor belts; the conveyor belts are installed in cooperation with the drive motor through a rotating wheel and a guide wheel; the drive motors installed in cooperation with the two conveyor belts are arranged diagonally; the two conveyor belts are provided with a plurality of paddles; the two conveyor belts are located on both sides of the support frame;

[0012] As a further technical solution of the present invention, a pressure rod is also arranged between the two conveyor belts; the pressure rod is arranged obliquely, and the pressure rod is fixedly installed with the box body; a plurality of connecting rods are also fixedly installed inside the box body; the connecting rods are arranged obliquely, and are fixedly installed with the box body; the conveyor belt is driven to rotate by a driving motor, so that the sample dropped into the corrosion liquid tank is effectively clamped by the adjacent paddles, so that the paddles drive the sample to move forward, so that the sample passes through the corrosion liquid tank and enters the clean water tank;

[0013] One end of the box body near the feeding assembly is set as a corrosion liquid tank; the other end is set as a clean water tank. The sample to be tested passes through the corrosion liquid tank and the clean water tank in turn, and the solution in the corrosion liquid tank is used to effectively corrode the surface of the sample. Then, the corrosion liquid remaining on the surface of the sample is effectively washed away by clean water through the conveyor belt.

[0014] As a further technical solution of the present invention, an additive box is arranged at the bottom of the corrosion liquid tank; the additive box is connected to the first circulation pump through a connecting pipe, and the infusion pipe of the first circulation pump extends into the corrosion liquid tank and is connected to the spray rack; the end of the pressure rod close to the feeding assembly is located inside the corrosion liquid tank, so that when it is used for a long time, when the concentration inside the corrosion liquid tank decreases, the additive is added to the inside of the corrosion liquid tank through the installed concentration sensor through the first circulation pump to ensure the corrosion effect of the corrosion liquid on the sample, and when the sample contacts the pressure rod, it is effectively ensured that the upper surface of the sample is located below the plane of the corrosion liquid in the corrosion liquid tank, ensuring that the sample enters the corrosion liquid as a whole,

[0015] As a further technical solution of the present invention, a storage box is arranged at the bottom of the clean water tank; a filter rack is arranged between the storage box and the clean water tank; the storage box is connected to the second circulation pump through a filter pump; the second circulation pump connecting pipe extends to the clean water tank and is connected to the clean water spray rack, and through the connection between the second circulation pump and the clean water spray rack, the residual corrosive solution on the surface of the sample transported on the conveyor belt is effectively cleaned, and the residual solution is prevented from being spilled outside the box body;

[0016] As a further technical solution of the present invention, a frame body is mounted on the outside of one end of the box body away from the feeding assembly; the frame body includes a crossbeam frame, on which a first slide rail and a second slide rail are arranged;

[0017] As a further technical solution of the present invention, a second mechanical gripper is installed on the first slide rail; a first mechanical gripper is installed on the second slide rail; a corrosion-resistant detection structure is arranged between the second mechanical gripper and the first mechanical gripper; a placement table is arranged on the side of the second mechanical gripper away from the corrosion-resistant detection structure; the first mechanical gripper moves laterally along the second slide rail to clamp the cleaned sample inside the box into the corrosion-resistant detection structure, and the corrosion condition of the sample surface is effectively detected by the corrosion-resistant detection structure, and the second mechanical gripper moves laterally along the first slide rail to place the detected sample on the placement table;

[0018] As a further technical solution of the present invention, the spray rack and the clean water spray rack are fixedly installed on the inner surface of the box; there is a gap between the inner wall of the box and the two ends of the pressure rod, so that after the sample falls into the corrosive liquid tank, the upper surface of the sample will not exceed the plane of the corrosive liquid and is convenient for the first mechanical gripper to grab;

[0019] As a further technical solution of the present invention, the inclination angle of the pressure rod is between 10° and 15°, and both ends of the pressure rod are tilted upward; the connecting rod is arranged parallel to the pressure rod and is welded and fixed to the inner wall of the box;

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] 1. In the present invention, when in use, multiple samples are placed in a placement rack on the top of the support frame, and one of the first rotating wheels is driven to rotate by a stepping motor to realize the rotation of the belt between the two first rotating wheels. During the belt rotation process, the raised serrations arranged on the belt increase the contact between the belt and the sample, so that the samples at the bottom of the placement rack are automatically loaded one by one;

[0022] 2. In the present invention, after the sample is separated from the loading assembly, it falls into the corrosive liquid tank through the gap between the pressure rod and the box body. The connecting rod effectively prevents the sample from sinking. The corrosive liquid floats up, so that the upper surface of the sample contacts the pressure rod. The end of the pressure rod is located inside the corrosive liquid tank, which effectively ensures that the upper surface of the sample is located in the corrosive liquid, and effectively realizes the immersion of the sample in the corrosive liquid, avoiding the situation where incomplete erosion affects the subsequent detection effect.

[0023] 3. The present invention drives two conveyor belts to rotate respectively through two driving motors, and clamps the sample through the paddles arranged on the conveyor belts to realize the forward movement of the sample. During the movement, the sample enters the top of the clean water tank from the corrosive liquid tank, and the clean water is sprayed on the sample through the second circulating pump to realize the flushing of the corrosive solution remaining on the surface of the sample. A filter rack is arranged between the clean water tank and the storage tank, and the residual corrosive solution is effectively filtered through the filter rack and the filter pump, so as to avoid the residual corrosive liquid when the second circulating pump circulates and sprays the clean water;

[0024] 4. In the present invention, the sample is moved to one end of the box away from the loading assembly under the drive of the paddle, and the sample is clamped and transferred from the end of the box to the corrosion-resistant detection structure by a first mechanical gripper installed on the second slide rail of the beam frame. The corrosion condition of the sample surface is effectively detected by a microscope, and the detection data is effectively analyzed. The detected sample is then transferred to the placement table by a second mechanical gripper installed on the first slide rail of the beam frame. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a three-dimensional structural schematic diagram of the present invention.

[0026] Figure 2 The present invention Figure 1 Another perspective structural diagram of .

[0027] Figure 3 The present invention Figure 1 Schematic diagram of the feeding component structure.

[0028] Figure 4 The present invention Figure 1 Schematic diagram of the transmission component structure.

[0029] Figure 5 The present invention Figure 2 Schematic diagram of the bottom structure disassembly.

[0030] Figure 6 The present invention Figure 4 Schematic diagram of the internal structure of the box.

[0031] Figure 7 The present invention Figure 3 Side view of.

[0032] Figure 8 The present invention Figure 7 AA section view.

[0033] Fig. 9 The present invention Figure 6 Side view of.

[0034] Fig.10 The present invention Figure 2 Schematic diagram of the installation structure of the rack body.

[0035] Fig.11 The present invention Figure 2 main view.

[0036] Fig.12 The present invention Fig.11 BB cross-sectional view.

[0037] Fig.13 The present invention Figure 5 A schematic diagram of the enlarged local structure.

[0038] Fig.14 The present invention Figure 6 An enlarged schematic diagram of the local structure at location B.

[0039] Fig.15 The present invention Figure 6 An enlarged schematic diagram of the local structure at location C.

[0040] Fig.16 The present invention Fig. 9 An enlarged schematic diagram of the local structure at point D.

[0041] In the figure: 1-box body, 2-feeding assembly, 20-support frame, 21-stepping motor, 22-first rotating wheel, 23-first rotating roller, 24-placing frame, 25-belt, 250-raised sawtooth, 3-transmission assembly, 30-convex belt, 300-paddle, 31-drive motor, 32-guide wheel, 33-spray frame, 34-pressure rod, 35-corrosive liquid tank, 36-additive tank, 37-first circulating pump, 38-second circulating pump, 39-storage box, 310-filter frame, 311-clean water tank, 312-filter pump, 314-clean water spray frame, 315-connecting rod, 4-frame body, 40-crossbeam frame, 41-first slide rail, 42-second slide rail, 5-first mechanical gripper, 6-second mechanical gripper, 7-placing table, 8-corrosion resistance detection structure. DETAILED DESCRIPTION

[0042] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0043] See also Figure 1-8 12. In an embodiment of the present invention, a corrosion-resistant detection device for the production of PFA engineering plastics comprises a box body 1; a feeding assembly 2 is fixedly installed on the top of one end of the box body 1; the feeding assembly 2 comprises two symmetrically arranged brackets 20; a first rotating wheel 22 and a first rotating roller 23 are arranged between the two brackets 20; wherein two first rotating wheels 22 are arranged, and one of the first rotating wheels 22 is fixedly installed with a stepping motor 21; a belt 25 is installed between the two first rotating wheels 22, and the belt 25 is provided with raised serrations 250; the contact area between the belt 25 and the sample is increased by the raised serrations 250, so that the samples are automatically fed one by one;

[0044] The first roller 23 is arranged at one end of the support frame 20 and cooperates with the first rotating wheel 22 at the end; a placement rack 24 is also arranged on the top of the support frame 20, and a plurality of samples are placed inside the placement rack 24; a first rotating wheel 22 is arranged at the middle bottom of the placement rack 24; the first rotating wheel 22 realizes effective support for the plurality of samples;

[0045] The top of the box body 1 is provided with a transmission assembly 3; the transmission assembly 3 includes two conveyor belts 30; the conveyor belts 30 are installed in cooperation with a drive motor 31 through a rotating wheel and a guide wheel 32; the drive motors 31 installed in cooperation with the two conveyor belts 30 are arranged diagonally; a plurality of paddles 300 are arranged on the two conveyor belts 30; the two conveyor belts 30 are located on both sides of the support frame 20;

[0046] A pressure rod 34 is also provided between the two conveyor belts 30; the pressure rod 34 is arranged at an angle, and the pressure rod 34 is fixedly installed with the box body 1; a plurality of connecting rods 315 are also fixedly installed inside the box body 1; the connecting rods 315 are arranged at an angle, and are fixedly installed with the box body 1; the pressure rod 34 effectively ensures that the height of the sample does not exceed the surface of the corrosive liquid, and the plurality of connecting rods 315 effectively ensure that the sample does not sink to the bottom of the corrosive liquid tank 35;

[0047] The inside of the box body 1 is provided with a corrosion liquid tank 35 at one end close to the feeding assembly 2; the inside of the other end is provided with a clean water tank 311; thus, during the sample transmission process, corrosion is first performed, and then the corrosion-completed surface is flushed, so as to ensure the result of the sample during the test;

[0048] An additive box 36 is provided at the bottom of the corrosion liquid tank 35; the additive box 36 is connected to the first circulation pump 37 through a connecting pipe, and the infusion pipe of the first circulation pump 37 extends into the corrosion liquid tank 35 and is connected to the spray rack 33; the end of the pressure rod 34 close to the feeding assembly 2 is located inside the corrosion liquid tank 35; the concentration of the corrosion liquid inside the corrosion liquid tank 35 is effectively detected by a concentration sensor (not shown), and when the concentration decreases, the additive inside the additive box 36 is extracted into the spray rack 33 by the first circulation pump 37, and the concentration inside the corrosion liquid tank 35 is adjusted by spraying;

[0049] By adopting the above technical solution, when in use, multiple samples are placed in the placement rack 24 on the top of the support frame 20, and one of the first rotating wheels 22 is driven to rotate by the stepping motor 21 to realize the rotation of the belt 25 between the two first rotating wheels 22. During the rotation of the belt 25, the raised serrations 250 arranged on the belt 25 increase the contact with the samples, so that the samples at the bottom of the placement rack 24 are automatically loaded one by one. After the loading is completed, the paddles 300 arranged on the conveyor belt 30 drive the samples to pass through the corrosion liquid tank 35 and the clean water tank 311 in sequence; wherein the surface of the sample is effectively corroded by the solution in the corrosion liquid tank 35,

[0050] See also Figure 6 , 9 , 11; In this embodiment, a storage box 39 is provided at the bottom of the clean water tank 311; a filter frame 310 is provided between the storage box 39 and the clean water tank 311; the storage box 39 is connected to the second circulation pump 38 through a filter pump 312; the second circulation pump 38 is connected to the clean water tank 311 and connected to the clean water spray frame 314; the second circulation pump 38 is used to achieve a circulation spraying effect of clean water;

[0051] Specifically, a frame body 4 is mounted on the outer side of the box body 1 away from the feeding assembly 2; the frame body 4 includes a crossbeam frame 40, and a first slide rail 41 and a second slide rail 42 are arranged on the crossbeam frame 40;

[0052] By adopting the above technical solution, after the sample is separated from the feeding assembly 2, it falls into the etching liquid tank 35 through the gap between the pressure rod 34 and the box body 1. The connecting rod 315 effectively prevents the sample from sinking. The upper surface of the sample contacts the pressure rod 34 through the floating of the etching liquid. The end of the pressure rod 34 is located inside the etching liquid tank 35, which effectively ensures that the upper surface of the sample is located in the etching liquid tank 35, effectively realizing the immersion of the sample in the etching liquid, and avoiding the situation of incomplete corrosion.

[0053] Furthermore, two driving motors 31 are used to drive the two conveyor belts 30 to rotate respectively, and the paddles 300 arranged on the conveyor belts 30 are used to clamp the sample to move the sample forward. During the movement, the sample enters the top of the clean water tank 311 from the corrosive liquid tank 35, and clean water is sprayed on the sample through the second circulation pump 38 to flush the corrosive solution remaining on the surface of the sample. A filter rack 310 is arranged between the clean water tank 311 and the storage tank 39, and the residual corrosive solution is effectively filtered by the filter rack 310 and the filter pump 312.

[0054] See also Figure 1 , 2 , 10, 11; In this embodiment, the first slide rail 41 is equipped with a second mechanical gripper 6; the second slide rail 42 is equipped with a first mechanical gripper 5; a corrosion-resistant detection structure 8 is provided between the second mechanical gripper 6 and the first mechanical gripper 5; a placement table 7 is provided on the side of the second mechanical gripper 6 away from the corrosion-resistant detection structure 8; the sample after corrosion and cleaning is placed under a microscope to observe the corrosion result,

[0055] In this embodiment, the spray rack 33 and the clean water spray rack 314 are fixedly installed on the inner surface of the box body 1; there are gaps between the two ends of the pressure rod 34 and the inner wall of the box body 1;

[0056] The inclination angle of the pressure rod 34 is between 10° and 15°, and both ends of the pressure rod 34 are tilted upward; the connecting rod 315 is arranged parallel to the pressure rod 34 and is welded and fixed to the inner wall of the box body 1; effectively ensuring that the sample moves forward and gradually moves out of the plane of the corrosive liquid to achieve separation from the corrosive liquid;

[0057] By adopting the above technical solution, the sample is moved to the end of the box 1 away from the loading component 2 under the drive of the paddle 300, and the sample is clamped and transferred from the end of the box 1 to the corrosion-resistant detection structure 8 by the first mechanical clamp 5 installed on the second slide rail 42 on the beam frame 40. The corrosion condition of the sample surface is effectively detected by a microscope, and the detection data is effectively analyzed. The detected sample is then transferred to the placement table 7 by the second mechanical clamp 6 installed on the first slide rail 41 on the beam frame 40.

[0058] The working principle of the present invention is as follows: when in use, multiple samples are placed in the placement rack 24 on the top of the support frame 20, and one of the first rotating wheels 22 is driven to rotate by the stepping motor 21, so as to realize the rotation of the belt 25 between the two first rotating wheels 22. During the rotation of the belt 25, the raised saw teeth 250 provided on the belt 25 increase the contact between the belt and the sample, so as to realize the automatic loading of the samples at the bottom of the placement rack 24 one by one;

[0059] After the sample is separated from the feeding assembly 2, it falls into the etching liquid tank 35 through the gap between the pressure rod 34 and the box body 1. The connecting rod 315 effectively prevents the sample from sinking. The upper surface of the sample contacts the pressure rod 34 through the floating of the etching liquid. The end of the pressure rod 34 is located inside the etching liquid tank 35, which effectively ensures that the upper surface of the sample is located in the etching liquid tank 35, effectively realizing the immersion of the sample in the etching liquid, avoiding the situation of incomplete erosion, which affects the subsequent test results.

[0060] The two conveyor belts 30 are driven to rotate by two driving motors 31 respectively, and the samples are clamped by the paddles 300 arranged on the conveyor belts 30 to move the samples forward. During the movement, the samples enter the top of the clean water tank 311 from the corrosive liquid tank 35, and the clean water is sprayed on the samples by the second circulation pump 38 to flush the corrosive solution remaining on the surface of the samples. A filter rack 310 is arranged between the clean water tank 311 and the storage tank 39, and the residual corrosive solution is effectively filtered by the filter rack 310 and the filter pump 312;

[0061] Driven by the paddle 300, the sample moves to one end of the box 1 away from the loading assembly 2, and is clamped and transferred from the end of the box 1 to the corrosion-resistant detection structure 8 by the first mechanical gripper 5 installed on the second slide rail 42 on the beam frame 40. The corrosion condition of the sample surface is effectively detected by a microscope, and the detection data is effectively analyzed. The detected sample is then transferred to the placement rack 7 by the second mechanical gripper 6 installed on the first slide rail 41 on the beam frame 40.

[0062] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

[0063] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A corrosion resistance detection device for PFA engineering plastic production, characterized by: The invention comprises a box body (1); a feeding assembly (2) is fixedly mounted on the top of one end of the box body (1); the feeding assembly (2) comprises two symmetrically arranged brackets (20); a first rotating wheel (22) and a first rotating roller (23) are arranged between the two brackets (20); two first rotating wheels (22) are arranged, one of the first rotating wheels (22) is fixedly mounted on a stepping motor (21); a belt (25) is mounted between the two first rotating wheels (22), and the belt (25) is provided with raised saw teeth (250); A placement rack (24) is also provided on the top of the support frame (20), and a plurality of samples are placed inside the placement rack (24); a first rotating wheel (22) is provided at the middle bottom of the placement rack (24); A transmission assembly (3) is arranged on the top of the box body (1); the transmission assembly (3) includes two conveyor belts (30); the two conveyor belts (30) are installed in cooperation with a drive motor (31) through a rotating wheel and a guide wheel (32); the drive motors (31) installed in cooperation with the two conveyor belts (30) are arranged diagonally; a plurality of paddles (300) are arranged on the two conveyor belts (30); the two conveyor belts (30) are located on both sides of the support frame (20); a pressure rod (34) is also arranged between the two conveyor belts (30); the pressure rod (34) is arranged in an inclined manner, and the pressure rod (34) is fixedly installed with the box body (1); a plurality of connecting rods (315) are also fixedly installed inside the box body (1); the connecting rods (315) are arranged in an inclined manner; One end of the box body (1) close to the loading assembly (2) is provided as a corrosive liquid tank (35); the other end is provided as a clean water tank (311); the inclination angle of the pressure rod (34) is between 10° and 15°, and both ends of the pressure rod (34) are tilted upward; the connecting rod (315) is provided in parallel with the pressure rod (34) and is welded and fixed to the inner wall of the box body (1); the end of the pressure rod (34) close to the loading assembly (2) is located inside the corrosive liquid tank (35).

2. A corrosion resistance detection device for PFA engineering plastic production according to claim 1, characterized in that: An additive box (36) is provided at the bottom of the corrosive liquid tank (35); the additive box (36) is connected to a first circulation pump (37) via a connecting pipe, and a liquid delivery pipe of the first circulation pump (37) extends into the corrosive liquid tank (35) and is connected to the spray rack (33).

3. A corrosion resistance detection device for PFA engineering plastic production according to claim 1, characterized in that: A storage box (39) is arranged at the bottom of the clean water tank (311); a filter frame (310) is arranged between the storage box (39) and the clean water tank (311); the storage box (39) is connected to a second circulation pump (38) via a filter pump (312); and a connecting pipe of the second circulation pump (38) extends to the clean water tank (311) and is connected to a clean water spray frame (314).

4. A corrosion resistance detection device for PFA engineering plastic production according to claim 1, characterized in that: A frame body (4) is mounted on the outside of one end of the box body (1) away from the loading assembly (2); the frame body (4) comprises a crossbeam frame (40), and a first slide rail (41) and a second slide rail (42) are arranged on the crossbeam frame (40).

5. A corrosion resistance detection device for PFA engineering plastic production according to claim 4, characterized in that: The first slide rail (41) is equipped with a second mechanical gripper (6); the second slide rail (42) is equipped with a first mechanical gripper (5); a corrosion-resistant detection structure (8) is provided between the second mechanical gripper (6) and the first mechanical gripper (5); and a placement table (7) is provided on a side of the second mechanical gripper (6) away from the corrosion-resistant detection structure (8).

6. A corrosion resistance detection device for PFA engineering plastic production according to claim 2, characterized in that: The spray rack (33) and the clean water spray rack (314) are fixedly mounted on the inner surface of the box body (1); and there are gaps between the two ends of the pressure rod (34) and the inner wall of the box body (1).

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