An anti-corrosion structure of a multi-point anchored PE board for sewage engineering and its application

Abstract

The present invention discloses an anti-corrosion structure of a multi-point anchored PE board for sewage engineering and its application. The anti-corrosion structure of the multi-point anchored PE board for sewage engineering includes a multi-point anchored PE board and a chain component; the multi-point anchored PE board includes a substrate and a plurality of anchor bodies arranged on one side of the substrate, and the substrate and the anchor bodies are integrally formed. An antibacterial agent is added to the components of the multi-point anchored PE board; the chain component is arranged between the roots of two non-adjacent anchor bodies. By adding an antibacterial agent, the antibacterial performance of the multi-point anchored PE board is improved. The anchor bodies cooperate with the chain component, greatly improving the tensile performance of the multi-point anchored PE board and ensuring its firmness and durability. Through construction, a complete anti-corrosion structure layer of the multi-point anchored PE board is formed on the surface of the cement pool, with no leakage points as a whole, improving its overall anti-corrosion performance.

Description

Technical Field

[0001] The present invention relates to the technical field of anti-corrosion in sewage engineering, and specifically to an anti-corrosion structure of multi-point anchored PE board for sewage engineering and its application. Background Art

[0002] In the process of sewage treatment, it is necessary to transport sewage to a cement pool for sedimentation, purification and other processes. When the contents such as agricultural products, chemicals, oil stains and other substances in the sewage come into contact with the surface of the pool, chemical reactions often occur. Therefore, they may cause the pool to corrode and rust from the inside out. The anti-corrosion structure of multi-point anchored PE board is the process of applying the multi-point anchored PE board to the inside of the pool. The multi-point anchored PE board is usually used to protect the pool from damage caused by corrosion, ensuring that the concrete will not be affected by corrosion.

[0003] After retrieval, the Chinese utility model patent with the publication number of CN216892795U discloses an anti-corrosion structure of multi-point anchored PE board for sewage engineering, including a cement wall body. A PE board is arranged on the inner side of the cement wall body, and an anchoring structure is arranged between the PE board and the cement wall body; the anchoring structure includes a support component installed on the cement wall body to support the side of the PE board and a locking component passing through the PE board and fixed to the cement wall body. By adopting the above technical solution, to a certain extent, the anti-corrosion effect of the cement pool is enhanced, the anti-corrosion life of the cement pool is increased, and at the same time, the anti-corrosion structure is convenient to install and has a short construction period.

[0004] In the above technical solution, the PE board is installed and fixed by the fixing component passing through the multi-point anchored PE board, which destroys the integrity of the multi-point anchored PE board, and thus destroys its overall anti-corrosion performance. In addition, the existing multi-point anchored PE boards are easily invaded by various microorganisms, and some components on their surfaces and inside are degraded by microorganisms, resulting in a decline in the overall anti-corrosion performance and a shortening of the anti-corrosion life. Summary of the Invention

[0005] In order to overcome the above technical defects, the present invention provides an anti-corrosion structure of multi-point anchored PE board for sewage engineering.

[0006] To achieve the above object, the present invention provides the following technical solution:

[0007] An anti-corrosion structure of multi-point anchored PE board for sewage engineering, including a multi-point anchored PE board and a chain component; the multi-point anchored PE board includes a substrate and a plurality of anchor bodies arranged on one side of the substrate. The roots of the anchor bodies are connected to the substrate, and the substrate and the anchor bodies are integrally formed. An antibacterial agent is added to the components of the material of the multi-point anchored PE board; the plurality of anchor bodies are at least 3; the chain component is arranged between the roots of two non-adjacent anchor bodies.

[0008] As an optimization of the anchor body, the anchor body includes two rounded cuboids, the two rounded cuboids are arranged in a V shape, there is a connecting part in the middle of the V shape, and the lower end point of the V shape is the root of the anchor body; the included angle between the anchor body and the substrate is 60 - 70 degrees.

[0009] As an optimization of the iron chain component, the iron chain component includes an iron chain, C-shaped rings arranged at both ends of the iron chain, and iron nails inserted inside the iron chain. The C-shaped ring is clamped to the root of the anchor body, and the tip of the iron nail faces away from the substrate.

[0010] For further optimization, there are at least two rows of anchor bodies on the substrate, the row spacing is 40 - 50 mm, there are at least 3 anchor bodies in each row, the distance between adjacent anchor bodies in the same row is 50 - 60 mm, and the anchor bodies between adjacent rows are arranged staggeredly; the iron chain components are evenly distributed on the substrate.

[0011] Furthermore, the iron chain component is arranged between the roots of two non-adjacent anchor bodies in the same row.

[0012] Furthermore, among the anchor bodies in the same row on the substrate, every 3 anchor bodies in the arranged order form a group, and the iron chain component is arranged between the roots of the first and the last anchor bodies in the same group.

[0013] As an optimization of the material of the multi-point anchoring PE board, the components and weight parts of the multi-point anchoring PE board include: high-density polyethylene 120 - 170, reinforcing filler 10 - 13, coupling agent 1 - 3, compatibilizer 0.1 - 0.5, antibacterial agent 0.1 - 0.5, anti-aging agent 0.1 - 0.5; the antibacterial agent includes: water-soluble nano silver bactericide and zinc pyrithione, and the anti-aging agent includes: anti-UV assistant and antioxidant.

[0014] For further optimization, high-density polyethylene 150, reinforcing filler 12, coupling agent 2, compatibilizer 0.5, antibacterial agent 0.5, anti-aging agent 0.5, colorant 3.

[0015] Furthermore, the preparation method of the multi-point anchoring PE board includes the following steps:

[0016] Step 1: Weigh the raw materials according to the formula and mix them with a high-speed disperser for 3 - 5 minutes to make the raw materials evenly dispersed.

[0017] Step 2: Extrude the dispersed raw materials by melting, cool them, and then package them into rolls to obtain the multi-point anchoring PE board.

[0018] The application of the multi-point anchoring PE board anti-corrosion structure for sewage engineering in the anti-corrosion of sewage engineering cement pools. The construction method for the anti-corrosion of sewage engineering cement pools includes the following steps:

[0019] Step 1: Apply a waterproof coating on the inner wall of the cement pool that needs to be anti-corrosion treated;

[0020] Step 2: After waiting for the waterproof coating to dry naturally in the shade, lay a waterproof plastic sheet above the waterproof coating;

[0021] Step 3: Demarcate the laying area through a template. The height of the template is flush with the thickness of the cement mortar layer. Pour the cement mortar into the interior of the template, vibrate the cement mortar evenly with a plate vibrator, and scrape the cement mortar flat with a scraper;

[0022] Step 4: Cut the rolled multi-point anchored PE sheet into a suitable length according to the laying size of the cement mortar layer;

[0023] Step 5: Evenly snap chain components onto the anchor bodies of the cut multi-point anchored PE sheet. The chain components include a chain, C-shaped rings provided at both ends of the chain, and iron nails inserted inside the chain; the tips of the iron nails are away from the substrate. Snap the C-shaped rings at the roots of the anchor bodies, and keep the chain in a loose state;

[0024] Step 6: Lay the multi-point anchored PE sheet above the cement mortar layer, and vibrate and flatten the multi-point anchored PE sheet with a plate vibrator so that the anchor bodies and the chain components are immersed inside the cement mortar layer; ensure the firm connection between the cement mortar layer and the multi-point anchored PE sheet after the cement mortar layer cures through the connection between the anchor bodies and the cement mortar, and improve the tensile property of the cement mortar layer after curing through the combination of the chain components and the cement mortar layer;

[0025] Step 7: Remove the template in Step 3, and repeat Step 3 to lay the cement mortar layer in adjacent areas;

[0026] Step 8: Repeat Steps 4 - 6 to lay the multi-point anchored PE sheet in sequence, and then grind the top surface of the joint part between adjacent multi-point anchored PE sheets into a rough surface;

[0027] Step 9: Fill the joint part with molten PE material, then lay a layer of PE strip material above the molten PE material, and press it flat with a roller;

[0028] Step 10: Lay the multi-point anchored PE sheet of the entire cement pool in sequence according to Steps 3 - 9 above until completion. After completion, wait for 48 hours until the cement mortar layer is completely cured, and then it can be put into use.

[0029] Compared with the prior art, the beneficial effects of the present invention are:

[0030] When preparing the multi-point anchored PE board of the present invention, by adding an antibacterial agent, the antibacterial performance of the multi-point anchored PE board is improved, avoiding the problem of the decline of the anti-corrosion ability caused by microbial invasion during its long-term use. At the same time, the shape structure of the anchor body designed integrally during the production of the multi-point anchored PE board, combined with the function of the iron chain component, greatly improves the tensile performance of the multi-point anchored PE board and ensures its firmness and durability.

[0031] In addition, through the designed construction process, after the construction of the anti-corrosion structure of the multi-point anchored PE board on the cement pool is completed, a complete anti-corrosion structure layer of the multi-point anchored PE board is formed on the surface of the cement pool, with no leakage points as a whole, improving its overall anti-corrosion performance. Brief Description of the Drawings

[0032] Figure 1 It is a schematic diagram of the connection structure of the anchor body of an anti-corrosion structure of a multi-point anchored PE board for a sewage project according to the present invention;

[0033] Figure 2 It is a schematic diagram of the distribution structure of the anchor body of an anti-corrosion structure of a multi-point anchored PE board for a sewage project according to the present invention;

[0034] Figure 3 It is a schematic diagram (top view) of the iron chain component structure of an anti-corrosion structure of a multi-point anchored PE board for a sewage project according to the present invention;

[0035] Figure 4 It is a schematic diagram (front view) of the iron chain component structure of an anti-corrosion structure of a multi-point anchored PE board for a sewage project according to the present invention;

[0036] Figure 5 It is a schematic diagram of the assembled state of an anti-corrosion structure of a multi-point anchored PE board for a sewage project according to the present invention.

[0037] In the figure: 1 - substrate; 2 - anchor body; 201 - rounded cuboid; 202 - connecting part; 3 - iron chain component; 301 - iron chain; 302 - C-shaped ring; 303 - iron nail. Detailed Description of the Invention

[0038] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments.

[0039] Embodiment 1:

[0040] As Figures 1 to 5 shown, an anti-corrosion structure of a multi-point anchored PE board for a sewage project includes a multi-point anchored PE board and an iron chain component; the multi-point anchored PE board includes a substrate 1 and a plurality of anchor bodies 2 arranged on one side of the substrate, the root of the anchor body 2 is connected to the substrate 1, and the substrate 1 and the anchor body 2 are integrally formed.

[0041] The anchor solid 2 includes two rounded cuboids 201 which are arranged in a V shape. There is a connecting part 202 between the middles of the two rounded cuboids (the middle of the V shape). The included angle between the anchor solid 2 (specifically the rounded cuboid therein) and the substrate 1 is 60 - 70 degrees, and the lower endpoint of the V shape is the root of the anchor solid; there is an iron chain component 3 between the roots of the two anchor solids 2. The two rounded cuboids are inclined (with an included angle of 60 - 70 degrees with the substrate 1). After the anchor solid 2 contacts the cement mortar layer, the rounded cuboid 201 is obliquely inserted into the cement mortar layer. With the cooperation of the connecting part 202, the anchor solid 2 and the cement mortar layer present a firm buckle connection, increasing the tensile property of the whole multi-point anchored PE board. By integrating the anchor solid with the concrete, the tensile strength exceeds 40 tons per square meter, and it has excellent impact resistance and shear resistance.

[0042] The iron chain component includes an iron chain 301, C-shaped rings 302 arranged at both ends of the iron chain, and iron nails 303 inserted inside the iron chain 301. The C-shaped ring 302 is clamped with the root of the anchor solid 2, and the tip of the iron nail 303 faces away from the substrate 1. Through the combination of the iron chain component and the cement mortar layer, compared with the traditional cement mortar layer, the local tensile property after curing of the cement mortar layer is improved.

[0043] There are multiple rows of anchor solids 2 on the substrate 1 (such as Figure 2 and Figure 5 there are 4 rows set in it, and the specific number of rows can be set according to the actual situation), the row spacing is 40 - 50 mm, at least 3 anchor solids are set in each row, the distance between adjacent anchor solids in the same row is 50 - 60 mm, and the anchor solids between adjacent rows are staggered; the iron chain components are evenly distributed on the substrate. In this embodiment, every 3 anchor solids in the same row of the anchor solids 2 on the substrate 1 are taken as a group, and the iron chain component is set between the roots of the first and the last anchor solids in the same group. This design is a preferred design, greatly improving the tensile property of the multi-point anchored PE board and ensuring its firmness and durability.

[0044] The multi-point anchored PE board in this embodiment includes the following components in parts by weight: 120 - 170 parts of high-density polyethylene, 10 - 13 parts of reinforcing filler, 1 - 3 parts of coupling agent, 0.1 - 0.5 parts of compatibilizer, 0.1 - 0.5 parts of antibacterial agent, 0.1 - 0.5 parts of anti-aging agent, 1 - 3 parts of colorant. The antibacterial agent includes: water-soluble nano-silver bactericide and zinc pyrithione, and the anti-aging agent includes: anti-UV additive and antioxidant.

[0045] In this embodiment, the reinforcing filler is calcium carbonate. Calcium carbonate is in the shape of orthorhombic crystal, so it has higher stiffness, dimensional stability and heat-resistant temperature, and the strengthening effect is good.

[0046] In this embodiment, titanate coupling agents and compatibilizers are used to increase the compatibility between the reinforcing filler and high-density polyethylene.

[0047] In this embodiment, the colorant is an organic pigment, which has high coloring power, bright color, complete color spectrum, small relative density, and small addition amount.

[0048] The water-soluble nano-silver bactericide has excellent antibacterial effects on various pathogenic bacteria such as Escherichia coli, Staphylococcus aureus, and Candida albicans, and zinc pyrithione has good antibacterial effects on fungi. During formulation, the two are added in equal amounts according to a ratio, that is, the mass ratio of the water-soluble nano-silver bactericide to zinc pyrithione added is 1:1.

[0049] For the anti-UV aid and antioxidant in the anti-aging agent, during formulation, the two are added in equal amounts according to a ratio, that is, the mass ratio of the anti-UV aid to the antioxidant added is 1:1.

[0050] The preparation method of the multi-point anchored PE board includes the following steps: Step 1: Weigh the raw materials according to the formula and mix them with a high-speed disperser for 3-5 minutes to make the raw materials evenly dispersed. Step 2: Melt-extrude the dispersed raw materials, cool them, and then package them into rolls to obtain the multi-point anchored PE board.

[0051] Example Two:

[0052] This embodiment is an optimization of Example 1. The structure of the multi-point anchored PE board remains unchanged, and the material components of the multi-point anchored PE board are further improved on the basis of Example 1. The specific scheme is as follows: The multi-point anchored PE board includes the following components in parts by weight: 150 parts of high-density polyethylene, 12 parts of reinforcing filler, 3 parts of coupling agent, 0.5 part of compatibilizer, 0.5 part of antibacterial agent, 0.5 part of anti-aging agent, and 3 parts of colorant.

[0053] The reinforcing filler is calcium carbonate, titanate coupling agents and compatibilizers are used, the colorant is an organic pigment, among which the antibacterial agent is 0.25 part of water-soluble nano-silver bactericide and 0.25 part of zinc pyrithione, and the anti-aging agent is 0.25 part of anti-UV aid and 0.25 part of antioxidant.

[0054] Example Three:

[0055] This embodiment is an optimization of Example 1. The structure of the multi-point anchored PE board remains unchanged, and the material components of the multi-point anchored PE board are further improved on the basis of Example 1. The specific scheme is as follows: The multi-point anchored PE board includes the following components in parts by weight: 120 parts of high-density polyethylene, 13 parts of reinforcing filler, 3 parts of coupling agent, 0.5 part of compatibilizer, 0.5 part of antibacterial agent, 0.5 part of anti-aging agent, and 3 parts of colorant.

[0056] The reinforcing filler is calcium carbonate, and titanate coupling agents and compatibilizers are used. The colorant is an organic pigment. The antibacterial agent is 0.25 parts of water-soluble nano silver bactericide and 0.25 parts of zinc pyrithione, and the anti-aging agent is 0.25 parts of anti-UV additive and 0.25 parts of antioxidant.

[0057] Example 4:

[0058] This example is an optimization of Example 1. The structure of the multi-point anchored PE board remains unchanged. On the basis of Example 1, the material components of the multi-point anchored PE board are further improved. The specific scheme is as follows: The multi-point anchored PE board includes the following components in parts by weight: 170 parts of high-density polyethylene, 10 parts of reinforcing filler, 1 part of coupling agent, 0.1 part of compatibilizer, 0.2 part of antibacterial agent, 0.3 part of anti-aging agent, and 2 parts of colorant.

[0059] The reinforcing filler is calcium carbonate, and titanate coupling agents and compatibilizers are used. The colorant is an organic pigment. The antibacterial agent is 0.1 part of water-soluble nano silver bactericide and 0.1 part of zinc pyrithione, and the anti-aging agent is 0.15 parts of anti-UV additive and 0.15 parts of antioxidant.

[0060] The physical and chemical properties of the multi-point anchored PE board are tested by the following standards:

[0061] GB / T 1034-2008 Plastics - Determination of water absorption;

[0062] GB / T 528-2009 Rubber, vulcanized or thermoplastic - Determination of tensile stress-strain properties;

[0063] GB / T 19466.6 Plastics - Differential scanning calorimetry (DSC) - Part 6: Determination of oxidation induction time (isothermal OIT) and oxidation induction temperature (dynamic OIT);

[0064] GB / T 531.1-2008 Rubber, vulcanized or thermoplastic - Determination of indentation hardness - Part 1: Shore hardness;

[0065] GB / T 11547-2008 Plastics - Determination of resistance to liquid chemical reagents;

[0066] GB2423.16-90 Basic environmental testing procedures for electric and electronic products - Test J: Damp heat, steady state;

[0067] Existing multi - point anchored PE boards: The publication number is CN105419071A, which discloses a modified PE waterproof board and its preparation method. The waterproof board includes the following raw material components: LLDPE, POE, antioxidant, and light stabilizer. The content of each raw material component of the waterproof board, in parts by mass, is: 50 - 75 parts of LLDPE, 25 - 50 parts of POE, 0.2 - 0.4 parts of antioxidant, and 0.2 - 0.4 parts of light stabilizer. As a comparative example.

[0068] The physical property tests of the multi - anchor point PE boards prepared in the comparative example and Examples 2, 3, and 4 are shown in Table 1.

[0069] Table 1

[0070]

[0071] As can be seen from the above table, in Examples 2, 3, and 4 of the present invention, due to the addition of a reinforcing agent and a solubilizer, the combination between raw materials is more compact. Compared with the comparative example, the water absorption rate is greatly reduced, the tensile strength also increases slightly, the hardness remains basically the same, and the antioxidant property and elongation rate remain basically the same.

[0072] The chemical corrosion resistance tests of the existing multi - point anchored PE board (comparative example) and the multi - anchor point PE boards prepared in Examples 2, 3, and 4 are as follows: Among them, the chemical reagent resistance performance is expressed by the weight change rate (%).

[0073] Weight change rate (%)=(1 - current weight) / original weight * 100%

[0074] The antibacterial performance determination level ranges from level 0 to level 3, divided into 4 levels. Level 0 has the highest mildew - proof level, and level 3 has the lowest mildew - proof level. The chemical reagent resistance performance and antibacterial performance are shown in Table 2.

[0075] Table 2

[0076]

[0077]

[0078] As can be seen from the above table, in Examples 2, 3, and 4 of the present invention, due to the addition of an antibacterial agent, the antibacterial performance of the multi - point anchored PE board is greatly improved, while the original chemical reagent resistance performance remains basically unchanged. The expected effect is achieved.

[0079] Example 5:

[0080] The construction method of applying the anti - corrosion structure of the multi - point anchored PE board for sewage engineering in a sewage engineering cement pool includes the following steps:

[0081] Step 1: Apply a waterproof coating on the inner wall of the cement pool that needs anti-corrosion treatment; after cleaning the cement pool, stir the waterproof coating to form a slurry without lumps and particles; apply primer with a roller brush: to improve the adhesion of the paint film to the base layer, apply the first layer of waterproof coating. First, apply it to the nodes that are not easy to brush, such as the corners of the cement pool. After waiting for the paint at the nodes to dry, carry out the construction of the first layer of large-area coating. During the construction process, it should be applied and scraped multiple times to ensure that there are no air bubbles between the waterproof coating and the base layer; apply the second layer of waterproof coating: after the first layer of waterproof coating dries; carry out the construction of the second layer of waterproof coating. The brushing direction should be perpendicular to the first layer. After the surface dries, the next layer should be brushed until the designed thickness is reached; construct the surface waterproof coating layer: the last layer of waterproof coating layer to improve the flatness and smoothness of the coating surface; the waterproof coating is completed and air-dried for 24 hours;

[0082] Step 2: After waiting for the waterproof coating to dry naturally in the shade, lay a waterproof plastic cloth above the waterproof coating; the overlapping width of the waterproof plastic cloth shall not be less than 10 cm;

[0083] Step 3: Lay a layer of cement mortar layer with a thickness of 5 - 10 cm above the waterproof cloth; demarcate the laying area through a template. The height of the template is flush with the thickness of the cement mortar layer. Pour the cement mortar into the interior of the template and vibrate the cement mortar evenly with a plate vibrator, and scrape the cement mortar flat with a scraper;

[0084] Step 4: Cut the rolled multi-point anchored PE board into a suitable length according to the laying size of the cement mortar layer;

[0085] Step 5: Evenly clamp the chain components on the anchor bodies of the cut multi-point anchored PE board; insert iron nails into the interior of the chain of the chain components, with the tip of the iron nail away from the base plate, and clamp the C-shaped ring at the root of the anchor body, and keep the chain in a loose state;

[0086] Step 6: Lay the multi-point anchored PE board above the cement mortar layer and vibrate and flatten the multi-point anchored PE board with a plate vibrator so that the anchor bodies and the chain components are immersed in the cement mortar layer; ensure the firm connection between the cement mortar layer and the multi-point anchored PE board after the cement mortar layer cures through the connection between the anchor bodies and the cement mortar, and improve the tensile performance of the cement mortar layer after curing through the combination of the chain components and the cement mortar layer;

[0087] Step 7: Remove the template in Step 3 and repeat Step 3 to lay the cement mortar layer in the adjacent area;

[0088] Step 8: Repeat Steps 4 - 6 to lay the multi-point anchored PE board in sequence, and then polish the top surface of the joint part between adjacent multi-point anchored PE boards to a rough surface;

[0089] Step 9: Fill the joint part with molten PE material, then lay a layer of PE strip material above the molten PE material and flatten it with a pressure roller;

[0090] Step 10: Lay the multi-point anchored PE plates of the entire cement pool in sequence according to the above Steps 3-9 until completion. After completion, wait for 48 hours until the cement mortar layer is completely cured, and then it can be put into use.

[0091] Finally, it should be noted that the above is only used to illustrate the technical solution of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred arrangement, those of ordinary skill in the art should understand that the technical solution of the present invention can be modified or equivalently replaced without departing from the spirit and scope of the technical solution of the present invention.

Claims

1. A multi-point anchored PE board anti-corrosion structure for sewage engineering, characterized in that: It includes a multi-point anchored PE board and a chain component; The multi-point anchored PE board includes a substrate and a plurality of anchor bodies arranged on one side of the substrate. The roots of the anchor bodies are connected to the substrate. The substrate and the anchor bodies are integrally formed. An antibacterial agent is added to the components of the material of the multi-point anchored PE board; The chain component is arranged between the roots of two non-adjacent anchor bodies; The chain component includes a chain, C-shaped rings arranged at both ends of the chain, and iron nails inserted inside the chain. The C-shaped rings are clamped to the roots of the anchor bodies, and the tips of the iron nails face away from the substrate; The chain component is arranged between the roots of two non-adjacent anchor bodies in the same row; The components and weight parts of the multi-point anchored PE board include: high-density polyethylene 120-170, reinforcing filler 10-13, coupling agent 1-3, compatibilizer 0.1-0.5, antibacterial agent 0.1-0.5, anti-aging agent 0.1-0.5; The antibacterial agent includes: water-soluble nano silver bactericide and zinc pyrithione, and the anti-aging agent includes: anti-UV agent and antioxidant.

2. The anti-corrosion structure of the multi-point anchored PE board for sewage engineering according to claim 1, wherein: The anchor body includes two rounded cuboids, the two rounded cuboids are arranged in a V shape, there is a connecting part in the middle of the V shape, and the lower end point of the V shape is the root of the anchor body; the included angle between the anchor body and the substrate is 60-70 degrees.

3. The anti-corrosion structure of the multi-point anchored PE board for sewage engineering according to claim 1, characterized in that: There are at least two rows of anchor bodies on the substrate, the row spacing is 40-50 mm, at least 3 anchor bodies are arranged in each row, the distance between adjacent anchor bodies in the same row is 50-60 mm, and the anchor bodies between adjacent rows are staggered; The chain components are evenly distributed on the substrate.

4. The anti-corrosion structure of the multi-point anchored PE board for sewage engineering according to claim 1, wherein: Among the anchor bodies in the same row on the substrate, every 3 anchor bodies in the arrangement order are taken as a group, and the chain component is arranged between the roots of the first and last anchor bodies in the same group.

5. The anti-corrosion structure of the multi-point anchored PE board for sewage engineering according to claim 1, characterized in that: The preparation method of the multi-point anchored PE board includes the following steps: Step 1: Weigh the raw materials according to the formula and mix them for 3-5 minutes by a high-speed disperser to make the raw materials evenly dispersed; Step 2: Extrude the dispersed raw materials by melting, cool them and then package them into rolls to obtain the multi-point anchored PE board.

6. Application of the multi-point anchored PE board anti-corrosion structure for sewage engineering described in Claim 1 in the anti-corrosion of cement pools in sewage engineering.

7. The application according to claim 6, characterized in that: The construction method for the anti-corrosion of cement pools in sewage engineering includes the following steps: Step 1: Apply a waterproof coating on the inner wall of the cement pool that needs to be anti-corrosion treated; Step 2: Wait for the waterproof coating to dry naturally in the shade, and lay a waterproof plastic cloth above the waterproof coating; Step 3: Demarcate the laying area through a template. The height of the template is flush with the thickness of the cement mortar layer. Pour the cement mortar into the template, vibrate the cement mortar evenly with a flat vibrator, and scrape the cement mortar flat with a scraper; Step 4: Cut the rolled multi-point anchored PE board into a suitable length according to the laying size of the cement mortar layer; Step 5: Evenly snap the chain components onto the anchors of the cut multi-point anchored PE board. The chain components include a chain, C-shaped rings provided at both ends of the chain, and iron nails inserted inside the chain; the tips of the iron nails are away from the substrate. Snap the C-shaped rings at the roots of the anchors, and keep the chain in a slack state; Step 6: Lay the multi-point anchored PE board above the cement mortar layer, and use a plate vibrator to vibrate and flatten the multi-point anchored PE board so that the anchors and the chain components are immersed inside the cement mortar layer; Step 7: Remove the formwork in Step 3, and repeat Step 3 to lay the cement mortar layer in the adjacent area; Step 8: Repeat Steps 4-6 to lay the multi-point anchored PE board in sequence, and then grind the top surface of the joint part between adjacent multi-point anchored PE boards into a rough surface; Step 9: Fill the joint part with molten PE material, then lay a layer of PE strip material above the molten PE material, and roll it flat with a roller; Step 10: Lay the multi-point anchored PE board of the entire cement pool in sequence according to the above Steps 3-9 until completion. After completion, wait for 48 hours until the cement mortar layer is completely cured, and then it can be put into use.

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