A device for testing the scale and corrosion inhibition performance of an inhibitor

Abstract

The application relates to the technical field of performance testing devices, and discloses a device for testing the scale inhibition and scale prevention performance of an anti-corrosion and scale inhibition agent, which comprises a fixed plate and further comprises: a testing part installed on the fixed plate; an adjusting part arranged on the testing part; a shaking part installed on the fixed plate; the testing part comprises a comparison assembly arranged on the fixed plate and a pressing assembly installed on the fixed plate; the comparison assembly comprises a plurality of connecting rods I fixedly connected to the top of the fixed plate; and the top of the fixed plate is fixedly connected with an electric telescopic rod. The testing part is arranged, so that the existing performance testing device can be used to systematically analyze the comprehensive performance of the agent according to the test effects of multiple groups, the test error is large, the repeatability is poor, and the accuracy of the performance detection and batch stability evaluation of the anti-corrosion and scale inhibition agent is greatly reduced.

Description

Technical Field

[0001] This invention relates to the field of performance testing equipment, specifically to a testing device for the scale inhibition and scale prevention performance of corrosion and scale inhibitors. Background Technology

[0002] Corrosion and scale inhibitors are widely used in industrial circulating cooling water, boilers, heat exchange pipe networks, reverse osmosis water treatment and other systems. They can chelate calcium and magnesium ions in water, inhibit the precipitation and deposition of scale such as carbonates and sulfates, and form a protective film on the metal surface to reduce the corrosion rate of equipment. They play a key role in ensuring heat exchange efficiency and extending the service life of equipment. In the process of agent research and development, formula optimization and quality testing, it is necessary to use special equipment to conduct quantitative and qualitative tests on their scale inhibition, scale prevention and corrosion inhibition effects.

[0003] However, existing performance testing equipment makes it difficult to systematically analyze the comprehensive performance of agents based on multiple sets of test results during use. The test errors are large and the repeatability is poor, which greatly reduces the accuracy of performance testing and batch stability evaluation of corrosion and scale inhibitors. Summary of the Invention

[0004] The purpose of this invention is to provide a testing device for the scale inhibition and anti-scaling performance of corrosion and scale inhibitors. By setting up a testing section, this invention solves the problems of existing performance testing devices, which are difficult to systematically analyze the comprehensive performance of agents based on multiple sets of test results, have large test errors and poor repeatability, and greatly reduce the accuracy of performance testing and batch stability evaluation of corrosion and scale inhibitors.

[0005] To solve the above-mentioned technical problems, the present invention is achieved through the following technical solution:

[0006] This invention relates to a testing device for studying the scale inhibition and scale prevention performance of corrosion and scale inhibitors. It includes a fixed plate, and further comprises: a testing section mounted on the fixed plate; an adjustment section disposed on the testing section; a shaking section mounted on the fixed plate; the testing section includes a comparison component disposed on the fixed plate; and a pressing component mounted on the fixed plate. The comparison component includes several connecting rods fixedly connected to the top of the fixed plate. An electric telescopic rod is fixedly connected to the top of the fixed plate. A placement ring is fixedly connected to each connecting rod, and several test containers are disposed on the placement ring. Several connecting rods and test containers are fixedly connected to several connecting rods, with eight connecting rods and eight test containers arranged circumferentially. The connecting element includes several conveying pipes connected to several receiving tubes, which connect the several receiving tubes. Each conveying pipe includes an injection port at its end.

[0007] Furthermore, the adjustment unit includes a pressing component mounted on the testing unit; and a pushing component disposed on the pressing component.

[0008] Furthermore, the wobbling part includes a drive assembly mounted on a fixed plate; and two pull-down assemblies, both of which are mounted on the fixed plate.

[0009] Furthermore, the extrusion assembly includes several receiving tubes fixedly connected to a fixed ring. Each of the receiving tubes is provided with a pressing rod. The tops of the pressing rods extend out of the receiving tubes. The bottoms of the pressing rods are fixedly connected to sealing plates. The tops of the pressing rods are fixedly connected to connecting plates one and two. A connecting plate two is provided above the receiving tubes. A spring one is sleeved on the outer wall of each pressing rod. The top of the spring one is fixedly connected to connecting plate one, and the bottom of the spring one is fixedly connected to connecting plate two. A connecting piece is provided on each receiving tube. The sealing plate is adapted to and seals the receiving tube. The connecting plate two is fixedly connected to an electric telescopic rod. A sealing valve is provided at the bottom of each receiving tube, which only releases air or liquid when pushed outward.

[0010] Furthermore, the pressing assembly includes a threaded block fixedly connected to the inner wall of the receiving tube, the inner wall of the threaded block being threadedly connected to a threaded rod, the top of the threaded rod extending to the outside of the receiving tube, and a hexagonal block being provided above the threaded rod for rotating the threaded rod.

[0011] Furthermore, the pushing assembly includes a connecting plate rotatably connected to the outer wall of the threaded rod, and a second spring is sleeved on the outer wall of the receiving tube. The top of the second spring is fixedly connected to the connecting plate, and the bottom of the second spring is fixedly connected to the fixing ring. The initial state of the second spring is a compressed state.

[0012] Furthermore, the drive assembly includes a corrugated ring fixedly connected to the bottom of the fixed plate, two support rods are arranged below the corrugated ring, a rotating shaft passes through the two support rods, two friction wheels are fixedly connected to the outer wall of the rotating shaft, a drive component is arranged on the support rod on the right side, both friction wheels are in contact with the corrugated ring, and the lower part of the corrugated ring is corrugated.

[0013] Furthermore, the pull-down assembly includes an adapter hole at the bottom of the fixed plate, a connecting rod two is provided in the adapter hole, a hollow rod is slidably connected to the outer wall of the connecting rod two, a spring three is provided in the hollow rod, a support plate is fixedly connected to the bottom of the hollow rod, the top of the spring three is fixedly connected to the connecting rod two, the bottom of the spring three is fixedly connected to the support plate, the support rod is fixedly connected to the support plate, and the initial state of the spring three is a stretched state.

[0014] The present invention has the following beneficial effects:

[0015] 1. This invention, through the setting of a testing section, allows for the addition of the required reagent to the testing container after equipment debugging. Once the testing container is in place, the electric telescopic rod extends upward, pushing the connecting plate two upward. The connecting plate two then compresses the spring one upward, and the spring one simultaneously pushes the connecting plate one, the sealing plate, and the lower pressure rod upward together. The upward movement of the sealing plate increases the air pressure inside the receiving tube, using negative pressure to draw the corrosion and scale inhibitor into the receiving tube through the feed inlet of the delivery pipe. When the sealing plate touches the bottom end of the threaded rod, the connecting plate two continues to compress the spring one, and the reagent stops being drawn in. Subsequently, the electric telescopic rod is reversed and retracted downward, causing the connecting plate two, the spring one, the connecting plate one, the sealing plate, and the lower pressure rod to move downward as a whole. The downward movement of the sealing plate compresses the reagent inside the receiving tube and the lower pressure rod, and the compressed corrosion and scale inhibitor is quantitatively discharged into the testing container. Through the synchronous reaction and changes of multiple sets of testing containers, the performance comparison test of various dosages of corrosion and scale inhibitors is completed. Multiple dosages and batches of corrosion and scale inhibitors can be added to multiple testing containers, and the performance of the reagents can be analyzed based on multiple effects.

[0016] 2. This invention, through the setting of an adjustment unit, rotates a threaded rod according to the test target of the agent dosage. The threaded rod rotates through threaded transmission on the threaded block. Under the limiting action of spring two, the connecting plate rotates synchronously with the threaded rod. During the rotation, the threaded rod moves downward and drives the connecting plate to compress spring two. After adjustment, the threaded rod is released, and the compressed spring two generates an upward pushing force, driving the connecting plate to drive the threaded rod to return to its original position. Under the tightening force of spring two, the meshing friction between the threaded rod and the threaded block is increased. By changing the adjustment stroke of the threaded rod, the upper limit position of the sealing plate is limited. The stroke height of the sealing plate determines the volume of corrosion and scale inhibitor that can be drawn into the receiving tube, thereby achieving precise adjustment of the amount of agent drawn in a single time. The position of the threaded rod can be adjusted according to different test targets to limit the movement stroke of the sealing plate, thereby controlling the dosage of corrosion and scale inhibitor drawn into the receiving tube. Thus, it is possible to analyze multiple dosages of agent under the same environmental conditions.

[0017] 3. This invention, by setting a swaying part, after adding corrosion and scale inhibitors into the test container, starts the motor on the motor bracket; the motor drives the friction wheel to rotate via the rotating shaft, and the friction wheel drives the fixed plate to rotate synchronously by relying on the friction between the friction wheel and the corrugated ring; since the bottom of the corrugated ring is set with a corrugated structure, during the rotation, the two friction wheels correspond to the concave and convex positions of the corrugated ring respectively, causing the fixed plate to rotate circumferentially and form a regular tilting and up-and-down swaying motion; when the fixed plate tilts and sways, the connecting rod two can adaptively change its angle within the adapter hole to match the swing posture of the fixed plate; during the up-and-down swaying of the fixed plate, it drives the connecting rod two upward, pulling the spring three to produce elastic deformation, while the connecting rod two slides and extends inside the hollow rod, so that the test container rotates, tilts and sways up and down with the fixed plate. At the same time, the swaying amplitude and motion state of multiple test containers are consistent, the test mixing conditions are uniform, effectively improving the uniformity of agent mixing, making the scale inhibition and scale prevention test phenomenon more intuitive and the test data more accurate and reliable.

[0018] Of course, any product implementing this invention does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0019] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0021] Figure 2 This is a partial cross-sectional view of the electric telescopic pole of the present invention;

[0022] Figure 3 This is a partial cross-sectional view of the adjustment section of the present invention;

[0023] Figure 4 This is a partial cross-sectional view of the swaying part of the present invention;

[0024] Figure 5 This is a partial cross-sectional view of the conveying pipe of the present invention;

[0025] Figure 6 This is an exploded structural diagram of the adapter hole of the present invention;

[0026] Figure 7 For the present invention Figure 2 A magnified structural diagram of A in the middle;

[0027] Figure 8 For the present invention Figure 4 A magnified structural diagram of B in the diagram.

[0028] The attached diagram lists the components represented by each number as follows:

[0029] In the diagram: 111, Fixing plate; 2, Testing section; 21, Comparison assembly; 211, Connecting rod one; 212, Electric telescopic rod; 213, Placement ring; 214, Test container; 215, Fixing ring; 22, Extrusion assembly; 221, Receiving tube; 222, Pressing rod; 223, Sealing plate; 224, Connecting plate one; 225, Connecting plate two; 226, Spring one; 227, Conveying pipe; 3, Adjustment section; 31, Pressing assembly; 311. Threaded block; 312. Threaded rod; 32. Push assembly; 321. Connecting plate; 322. Spring II; 4. Shaking part; 41. Drive assembly; 411. Corrugated ring; 412. Support rod; 413. Rotating shaft; 414. Friction wheel; 415. Motor bracket; 416. Motor; 42. Pull-down assembly; 421. Adapter hole; 422. Connecting rod II; 423. Hollow rod; 424. Spring III; 425. Support plate. Detailed Implementation

[0030] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0031] Please see Figures 1-8 As shown, the present invention is a testing device for studying the scale inhibition and scale prevention performance of corrosion and scale inhibitors, including a fixed plate 111, and further including: a testing part 2, which is mounted on the fixed plate 111; an adjustment part 3, which is disposed on the testing part 2; and a shaking part 4, which is mounted on the fixed plate 111.

[0032] Test unit 2 includes a comparison assembly 21, which is mounted on a fixed plate 111; and a compression assembly 22, which is also mounted on the fixed plate 111. The comparison assembly 21 includes several connecting rods 211 fixedly connected to the top of the fixed plate 111. An electric telescopic rod 212 is fixedly connected to the top of the fixed plate 111. A placement ring 213 is fixedly connected to the connecting rods 211. Several test containers 214 are mounted on the placement ring 213. Fixed rings 215 are fixedly connected to the connecting rods 211. Eight containers 211 and 214 are respectively provided and arranged in a circular pattern. The connecting component includes several conveying pipes 227 connected to several receiving tubes 221. The conveying pipes 227 can connect several receiving tubes 221. The conveying pipes 227 include injection ports at their ends. The extrusion assembly 22 includes several receiving tubes 221 fixedly connected to the fixing ring 215. Each of the several receiving tubes 221 is provided with a pressing rod 222. The top of each of the pressing rods 222 extends out of the several receiving tubes 221. The bottom of each of the 22 rods is fixedly connected to a sealing plate 223. The top of each of the several pressing rods 222 is fixedly connected to a connecting plate 224. A connecting plate 225 is installed above each of the several receiving tubes 221. A spring 226 is sleeved on the outer wall of the pressing rod 222. The top of the spring 226 is fixedly connected to the connecting plate 224, and the bottom of the spring 226 is fixedly connected to the connecting plate 225. A connecting piece is provided on the receiving tube 221. The sealing plate 223 is adapted to the receiving tube 221 and seals it. The connecting plate 225 is connected to the electric telescopic rod 2. 12. Fixed connection. The bottom of the receiving tube 221 is equipped with a sealing valve, which will only release air or liquid when pushed outward. The agent is drawn in by negative pressure and then filled by mechanical extrusion of the sealing plate 223. This reduces the residue of the agent in the pipeline, ensures the accuracy of the filling dosage, and avoids splashing and contamination problems during manual filling. It is suitable for the cleanliness and safety requirements of on-site filling equipment. By setting up the test section 2, multiple doses and batches of corrosion and scale inhibitors can be added to multiple test containers 214, and the performance of the agent can be analyzed based on multiple effects.

[0033] The adjustment unit 3 includes a pressing assembly 31, which is mounted on the testing unit 2; and a pushing assembly 32, which is disposed on the pressing assembly 31. The pressing assembly 31 includes a threaded block 311 fixedly connected to the inner wall of the receiving tube 221. A threaded rod 312 is threadedly connected to the inner wall of the threaded block 311. The top of the threaded rod 312 extends to the outside of the receiving tube 221. A hexagonal block is provided above the threaded rod 312 for rotating the threaded rod 312. The pushing assembly 32 includes a connecting plate 321 rotatably connected to the outer wall of the threaded rod 312. A second spring 322 is sleeved on the outer wall of the receiving tube 221. The top of the second spring 322 is fixedly connected to the connecting plate 321. The bottom of spring 322 is fixedly connected to the fixing ring 215. The initial state of spring 322 is a compressed state, and the amount of each injection can be flexibly adjusted according to the test target. This enables parallel comparative testing of different dosages and batches of corrosion and scale inhibitors, avoiding errors from manual dosing, making the test data more accurate, and better meeting the on-site control requirements for the dosage of the agent. By setting the adjustment part 3, the position of the threaded rod 312 can be adjusted according to different test targets, limiting the movement stroke of the sealing plate 223, thereby controlling the dosage of corrosion and scale inhibitor drawn into the receiving tube 221. This allows for analysis of multiple dosages of the agent under the same environmental conditions.

[0034] The wobbling part 4 includes a drive assembly 41 mounted on a fixed plate 111; and two pull-down assemblies 42, both mounted on the fixed plate 111. The drive assembly 41 includes a corrugated ring 411 fixedly connected to the bottom of the fixed plate 111. Two support rods 412 are positioned below the corrugated ring 411, with a rotating shaft 413 passing through each support rod 412. Two friction wheels 414 are fixedly connected to the outer wall of the rotating shaft 413. A drive component is mounted on the right support rod 412. Both friction wheels 414 are in contact with the corrugated ring 411. The lower part of the corrugated ring 411 is corrugated. The pull-down assembly 42 includes an adapter hole 421 formed at the bottom of the fixed plate 111. A connecting rod 422 is provided inside the adapter hole 421. A hollow rod 423 is slidably connected to the outer wall of the connecting rod 422. A spring 424 is provided inside the hollow rod 423. A support plate 425 is fixedly connected to the bottom of the hollow rod 423. The top of the spring 424 is fixedly connected to the connecting rod 422, and the bottom of the spring 424 is fixedly connected to the support plate 425. The support rod 412 is fixedly connected to the support plate 425. The initial state of the spring 424 is a stretched state. By setting the shaking part 4, the shaking amplitude and motion state of multiple test containers 214 are kept consistent. The test mixing conditions are uniform, which effectively improves the uniformity of reagent dissolution and makes the scale inhibition and scale prevention test phenomenon more intuitive and the test data more accurate and reliable.

[0035] It should be noted that the control of the electric telescopic rod 212 and the motor 416 in this application can both be achieved by using a program set in the control panel and inputting relevant parameters as needed for automated control. This control method can be implemented using existing technologies, such as PLC.

[0036] In use, first adjust the amount of corrosion and scale inhibitor added according to the test target. During adjustment, rotate the threaded rod 312. At this time, the threaded rod 312 will rotate on the threaded block 311. When the threaded rod 312 rotates, the connecting plate 321 will rotate on the threaded rod 312 due to the restriction of the second spring 322. During the rotation, the threaded rod 312 will move downward. During the downward movement of the threaded rod 312, it will squeeze the second spring 322 with the connecting plate 321. After the adjustment is completed, release the threaded rod 312. At this time, the second spring 322 will push upward. When pushing, the connecting plate 321 will move the threaded rod 312 upward. With a certain upward force, the friction between the threaded block 311 and the threaded rod 312 will increase, thereby preventing the threaded rod 312 from rotating due to external force. The degree of adjustment of the threaded rod 312 is used to limit the position of the sealing plate 223. The height of the sealing plate 223 depends on how much corrosion and scale inhibitor can be absorbed, thereby achieving the adjustment effect.

[0037] After adjustment, add the required reagent to the test container 214. After preparing the test container 214, start the electric telescopic rod 212 to move upward. After the electric telescopic rod 212 is started, it will push the connecting plate 225. At this time, the connecting plate 225 will squeeze the spring 226 upward. The spring 226 will push the connecting plate 224, the sealing plate 223 and the lowering rod 222 upward. When the sealing plate 223 moves upward, it will increase the air pressure in the receiving tube 221. The increased air pressure in the receiving tube 221 will draw the corrosion and scale inhibitor into the receiving tube 221 from the feed port of the delivery pipe 227. After the bottom of the tread rod 312 contacts, the movement of the connecting plate 225 will compress the spring 226. At this time, the corrosion and scale inhibitor will stop entering the receiving tube 221. Then, the electric telescopic rod 212 is driven in the opposite direction. At this time, the connecting plate 225 will move downward with the spring 226, the connecting plate 224, the sealing plate 223 and the pressure rod 222. When the sealing plate 223 moves downward, it will compress the corrosion and scale inhibitor in the pressure rod 222. At this time, the corrosion and scale inhibitor will be discharged into the test container 214 after being compressed. Thus, the changes in multiple test containers 214 can be observed to compare the effects of different amounts of corrosion and scale inhibitor.

[0038] After adding the corrosion and scale inhibitor, the motor 416 on the motor bracket 415 can be started. The motor 416 will then rotate the friction wheel 414 via the shaft 413. As the friction wheel 414 rotates, it will cause the fixed plate 111 to rotate due to friction with the corrugated ring 411. However, because the lower part of the corrugated ring 411 is corrugated, a certain degree of wobbling will occur when the corrugated ring 411 rotates. This rotation is caused by the corrugations in the corrugated ring 411 causing the two friction wheels 414 to be in different positions; for example, one may be in a concave position while the other is in a more convex position. Located at the protrusion, the fixing plate 111 will tilt. When tilted, the connecting rod 422 will change its angle to a certain extent in the adapter hole 421 to adapt to the shaking of the fixing plate 111. When it moves up and down, it will move the connecting rod 422 upward. When the connecting rod 422 moves upward, it will pull the spring 424. At this time, the connecting rod 422 will slide in the hollow rod 423. During the shaking process, the corrosion and scale inhibitor will be more evenly distributed in the test container 214, so the test effect is more obvious and accurate.

[0039] The preferred embodiments of the present invention disclosed above are merely illustrative of the invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the invention to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the invention, thereby enabling those skilled in the art to better understand and utilize the invention. The invention is limited only by the claims and their full scope and equivalents.

Claims

1. A testing device for studying the scale inhibition and scale prevention performance of corrosion and scale inhibitors, comprising a fixing plate (111), characterized in that, Also includes: Test unit (2), which is mounted on fixed plate (111); Adjustment unit (3), the adjustment unit (3) is provided on the test unit (2); A swaying part (4) is mounted on a fixed plate (111); The test unit (2) includes a comparison component (21), which is disposed on a fixed plate (111); as well as An extrusion assembly (22) is mounted on a fixed plate (111); The comparison component (21) includes several connecting rods (211) fixedly connected to the top of the fixed plate (111). An electric telescopic rod (212) is fixedly connected to the top of the fixed plate (111). A placement ring (213) is fixedly connected to the connecting rod (211). Several test containers (214) are provided on the placement ring (213). Fixed rings (215) are fixedly connected to the several connecting rods (211). There are eight connecting rods (211) and eight test containers (214) respectively, which are arranged in a circular pattern.

2. The apparatus for testing the scale inhibition and scale prevention performance of corrosion and scale inhibitors according to claim 1, characterized in that, The adjustment unit (3) includes a pressing component (31), which is mounted on the test unit (2); as well as A pushing component (32) is disposed on a pressing component (31).

3. The apparatus for testing the scale inhibition and scale prevention performance of corrosion and scale inhibitors according to claim 1, characterized in that, The wobbling part (4) includes a drive assembly (41) mounted on a fixed plate (111); and Two pull-down components (42) are provided, and both pull-down components (42) are provided on the fixing plate (111).

4. The apparatus for testing the scale inhibition and scale prevention performance of corrosion and scale inhibitors according to claim 1, characterized in that, The extrusion assembly (22) includes a plurality of receiving tubes (221) fixedly connected to a fixing ring (215). Each of the plurality of receiving tubes (221) is provided with a pressing rod (222). The tops of the plurality of pressing rods (222) extend to the outside of the plurality of receiving tubes (221). The bottoms of the plurality of pressing rods (222) are fixedly connected with a sealing plate (223). The tops of the plurality of pressing rods (222) are fixedly connected with a connecting plate (224). A connecting plate (225) is provided above the plurality of receiving tubes (221). A spring (226) is sleeved on the outer wall of the pressing rod (222). The top of the spring (226) is fixedly connected to the connecting plate (224). The bottom of the spring (226) is fixedly connected to the connecting plate (225). A connecting member is provided on the receiving tube (221). Among them, the sealing plate (223) is adapted to and sealed with the receiving tube (221), the connecting plate (225) is fixedly connected to the electric telescopic rod (212), and the bottom of the receiving tube (221) is provided with a sealing valve, which will only release air or liquid when pushed outward.

5. The apparatus for testing the scale inhibition and scale prevention performance of corrosion and scale inhibitors according to claim 2, characterized in that, The pressing assembly (31) includes a threaded block (311) fixedly connected to the inner wall of the receiving tube (221), and a threaded rod (312) is threadedly connected to the inner wall of the threaded block (311), the top of the threaded rod (312) extending to the outside of the receiving tube (221). Among them, a hexagonal block is provided above the threaded rod (312) for rotating the threaded rod (312).

6. The apparatus for testing the scale inhibition and scale prevention performance of corrosion and scale inhibitors according to claim 2, characterized in that, The pushing assembly (32) includes a connecting plate (321) rotatably connected to the outer wall of the threaded rod (312), and a second spring (322) is sleeved on the outer wall of the receiving tube (221). The top of the second spring (322) is fixedly connected to the connecting plate (321), and the bottom of the second spring (322) is fixedly connected to the fixing ring (215). Among them, the initial state of spring 2 (322) is a compressed state.

7. The apparatus for testing the scale inhibition and scale prevention performance of corrosion and scale inhibitors according to claim 3, characterized in that, The drive assembly (41) includes a corrugated ring (411) fixedly connected to the bottom of the fixed plate (111). Two support rods (412) are arranged below the corrugated ring (411). A rotating shaft (413) passes through the two support rods (412). Two friction wheels (414) are fixedly connected to the outer wall of the rotating shaft (413). A drive component is arranged on the support rod (412) on the right side. Both friction wheels (414) are in contact with the corrugated ring (411), and the bottom of the corrugated ring (411) is corrugated.

8. The apparatus for testing the scale inhibition and scale prevention performance of corrosion and scale inhibitors according to claim 3, characterized in that, The pull-down assembly (42) includes an adapter hole (421) at the bottom of the fixed plate (111), a connecting rod two (422) is provided in the adapter hole (421), a hollow rod (423) is slidably connected to the outer wall of the connecting rod two (422), a spring three (424) is provided in the hollow rod (423), a support plate (425) is fixedly connected to the bottom of the hollow rod (423), the top of the spring three (424) is fixedly connected to the connecting rod two (422), the bottom of the spring three (424) is fixedly connected to the support plate (425), and the support rod (412) is fixedly connected to the support plate (425). Among them, the initial state of spring three (424) is a stretched state.

9. The apparatus for testing the scale inhibition and scale prevention performance of corrosion and scale inhibitors according to claim 4, characterized in that, The connecting element includes a plurality of conveying pipes (227) connected to a plurality of receiving pipes (221); The delivery pipe (227) can connect several receiving pipes (221), and the delivery pipe (227) includes an injection port at the end.

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