Fire hydrant casting with corrosion protection

Abstract

The utility model discloses a fire hydrant casting with anticorrosion protection, including casting body, the outer surface of casting body is coated with first coating layer, first coating layer includes weatherable coating, wear -resisting coating and first anticorrosive coating, weatherable coating is fluorocarbon paint, wear -resisting coating is epoxy wear -resisting paint, and first anticorrosive coating is zinc rich primer, and the inner wall of casting body is coated with second coating layer. The utility model discloses through weatherable coating has super weather resistance, its containing fluorocarbon bond chemical stability is very high, can keep the integrity of coating under various severe outdoor environment for a long time, it not only can effectively resist the erosion of ultraviolet, prevents coating aging, fading, still has excellent water resistance and chemical corrosion resistance, can resist the erosion of rain, humid air and industrial waste gas etc, further strengthened the protection ability of fire hydrant casting outside, makes the fire hydrant can keep good appearance and performance in the outdoor environment.

Description

Technical Field

[0001] This utility model relates to the field of fire hydrant casting technology, specifically a fire hydrant casting with anti-corrosion protection. Background Technology

[0002] Fire hydrants, formally known as fire plugs, are fixed fire-fighting facilities whose main function is to control combustibles, isolate oxidizers, and eliminate ignition sources. They are divided into indoor and outdoor fire hydrants. Castings are metal shaped objects obtained by various casting methods. That is, smelted liquid metal is poured, injected, sucked, or otherwise cast into a pre-prepared mold, cooled, and then processed by grinding and other subsequent means to obtain an object with a certain shape, size, and performance. Fire hydrant manufacturing also uses casting methods, but current fire hydrant castings have poor corrosion resistance, resulting in a short service life. Therefore, we propose a fire hydrant casting with anti-corrosion protection. Utility Model Content

[0003] The purpose of this utility model is to provide a fire hydrant casting with anti-corrosion protection, which has the advantage of good anti-corrosion effect and solves the problem that the current fire hydrant castings have poor anti-corrosion effect, resulting in short service life.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a fire hydrant casting with anti-corrosion protection, comprising a casting body, the outer surface of which is coated with a first coating layer, the first coating layer comprising a weather-resistant coating, a wear-resistant coating and a first corrosion-resistant coating, the weather-resistant coating being fluorocarbon paint, the wear-resistant coating being epoxy wear-resistant paint, the first corrosion-resistant coating being zinc-rich primer, and the inner wall of which is coated with a second coating layer.

[0005] Preferably, the second coating layer includes a second corrosion-resistant coating, an elastic coating, and a third corrosion-resistant coating. The second corrosion-resistant coating is an inorganic anti-corrosion coating, the elastic coating is a rubber elastic paint, and the third corrosion-resistant coating is a phenolic epoxy paint.

[0006] Preferably, the second corrosion-resistant coating is applied to the inner wall of the casting body, the elastic coating is applied to the outside of the second corrosion-resistant coating, and the third corrosion-resistant coating is applied to the outside of the elastic coating.

[0007] Preferably, the weather-resistant coating is applied to the outside of the wear-resistant coating, the wear-resistant coating is applied to the outside of the first corrosion-resistant coating, and the first corrosion-resistant coating is applied to the outside of the casting body.

[0008] Preferably, a base is fixedly connected to the bottom of the casting body, the base is provided with a fixing hole, and a water outlet is provided on the front of the casting body.

[0009] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0010] 1. This utility model utilizes a weather-resistant coating with superior weather resistance. Its fluorocarbon bonds exhibit extremely high chemical stability, allowing the coating to maintain its integrity for extended periods in various harsh outdoor environments. It effectively resists ultraviolet radiation, preventing aging and fading, and also possesses excellent water and chemical corrosion resistance, resisting erosion from rain, humid air, and industrial exhaust gases. This further enhances the external protection of the fire hydrant casting, ensuring the fire hydrant maintains a good appearance and performance in outdoor environments. The wear-resistant coating not only provides excellent corrosion resistance but also effectively resists external friction and wear, protecting the first corrosion-resistant coating from mechanical damage. In daily use, it prevents damage to the first coating layer caused by collisions and scratches, extending its service life. The first corrosion-resistant coating is a zinc-rich primer, which allows zinc to preferentially oxidize in corrosive environments, forming a sacrificial anode protection to prevent rusting of the casting substrate and providing excellent corrosion resistance. Simultaneously, the zinc-rich primer has good adhesion to the casting surface, firmly adhering to the metal surface.

[0011] 2. This utility model utilizes an inorganic anti-corrosion coating as the second corrosion-resistant coating, which features high temperature resistance, acid and alkali resistance, and impermeability. Inside the fire hydrant, it effectively resists the erosion of acidic and alkaline substances and dissolved oxygen that may be present in the water flow, protecting the inner wall of the casting from corrosion. The elastic coating is made of rubber elastic paint, which has good flexibility and elasticity, buffering the impact of water flow on the inner wall of the fire hydrant, reducing stress concentration caused by water hammer effect, and preventing the coating from cracking and peeling. The third corrosion-resistant coating is made of phenolic epoxy paint, which has excellent corrosion resistance and good tolerance to various chemicals such as water, acids, and alkalis. Its use on the inner wall of the fire hydrant further enhances the protection against corrosive media, and its high hardness enhances the wear resistance of the inner wall, extending the service life of the fire hydrant. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of this utility model;

[0013] Figure 2 This is a schematic diagram of the internal structure of the casting body of this utility model;

[0014] Figure 3 This is a schematic diagram of the structure of the first coating layer of this utility model;

[0015] Figure 4 This is a schematic diagram of the structure of the second coating layer of this utility model.

[0016] In the figure: 1. Casting body; 2. Outlet; 3. Base; 4. Fixing hole; 5. First coating layer; 501. Weather-resistant coating; 502. Wear-resistant coating; 503. First corrosion-resistant coating; 6. Second coating layer; 601. Second corrosion-resistant coating; 602. Elastic coating; 603. Third corrosion-resistant coating. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0018] Secondly, the term "an embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single or selective embodiment that excludes other embodiments.

[0019] Example 1:

[0020] Please see Figure 1-4 As shown, this utility model provides a fire hydrant casting with anti-corrosion protection, including a casting body 1. The outer surface of the casting body 1 is coated with a first coating layer 5, which includes a weather-resistant coating 501, a wear-resistant coating 502, and a first corrosion-resistant coating 503. The weather-resistant coating 501 is fluorocarbon paint, the wear-resistant coating 502 is epoxy wear-resistant paint, and the first corrosion-resistant coating 503 is zinc-rich primer. The inner wall of the casting body 1 is coated with a second coating layer 6, where the weather-resistant coating 501 is coated on the outside of the wear-resistant coating 502, the wear-resistant coating 502 is coated on the outside of the first corrosion-resistant coating 503, and the first corrosion-resistant coating 503 is coated on the outside of the casting body 1. A base 3 is fixedly connected to the bottom of the casting body 1, and a fixing hole 4 is provided on the base 3. A water outlet 2 is provided on the front of the casting body 1.

[0021] This technical solution utilizes a weather-resistant coating 501, which possesses superior weather resistance and exhibits extremely high chemical stability due to its fluorocarbon bonds. This allows the coating to maintain its integrity over long periods in various harsh outdoor environments. It not only effectively resists UV erosion, preventing aging and fading, but also possesses excellent water and chemical corrosion resistance, resisting rain, humid air, and industrial exhaust gases. This further enhances the external protection of the fire hydrant casting, ensuring the fire hydrant maintains a good appearance and performance in outdoor environments. The wear-resistant coating 502 not only has good corrosion resistance but also effectively resists external friction and wear, protecting the first corrosion-resistant coating 503 from mechanical damage. In daily use, it prevents damage to the first coating layer 5 due to collisions and scratches, extending its service life. The first corrosion-resistant coating 503 is a zinc-rich primer, which allows zinc to preferentially oxidize in corrosive environments, forming a sacrificial anode protection to prevent rust on the substrate of the casting body 1, providing excellent corrosion resistance. Simultaneously, the zinc-rich primer has good adhesion to the surface of the casting body 1, firmly adhering to the metal surface.

[0022] Example 2:

[0023] Based on Embodiment 1, this utility model is as follows: Figure 1-4 As shown, the second coating layer 6 includes a second corrosion-resistant coating 601, an elastic coating 602, and a third corrosion-resistant coating 603. The second corrosion-resistant coating 601 is an inorganic anti-corrosion coating, the elastic coating 602 is a rubber elastic paint, and the third corrosion-resistant coating 603 is a phenolic epoxy paint. The second corrosion-resistant coating 601 is applied to the inner wall of the casting body 1, the elastic coating 602 is applied to the outside of the second corrosion-resistant coating 601, and the third corrosion-resistant coating 603 is applied to the outside of the elastic coating 602.

[0024] This technical solution utilizes an inorganic anti-corrosion coating, 601, as the second corrosion-resistant coating. This coating is characterized by high temperature resistance, acid and alkali resistance, and impermeability. Inside the fire hydrant, it effectively resists the erosion of acids, alkalis, and dissolved oxygen in the water flow, protecting the inner wall of the casting body 1 from corrosion. The elastic coating 602, made of rubber-elastic paint, possesses excellent flexibility and elasticity, buffering the impact of water flow on the inner wall of the fire hydrant, reducing stress concentration caused by water hammer, and preventing cracking and peeling of the coating. The third corrosion-resistant coating 603, made of phenolic epoxy paint, exhibits excellent corrosion resistance and good tolerance to various chemicals such as water, acids, and alkalis. Its application on the inner wall of the fire hydrant further enhances protection against corrosive media, and its high hardness enhances the wear resistance of the inner wall, extending the service life of the fire hydrant.

[0025] The working principle of this utility model is as follows: The weather-resistant coating 501 possesses superior weather resistance, and its fluorocarbon bonds exhibit extremely high chemical stability, enabling it to maintain coating integrity for extended periods in various harsh outdoor environments. It not only effectively resists ultraviolet radiation, preventing coating aging and fading, but also possesses excellent water resistance and chemical corrosion resistance, resisting erosion from rainwater, humid air, and industrial exhaust gases, further enhancing the external protection of the fire hydrant casting. This allows the fire hydrant to maintain a good appearance and performance in outdoor environments. The wear-resistant coating 502 not only has good corrosion resistance but also effectively resists external friction and wear, protecting the first corrosion-resistant coating 503 from mechanical damage. In daily use, it prevents damage to the first coating layer 5 due to collisions, scratches, etc., extending the service life of the first coating layer 5. The first corrosion-resistant coating 503 is a zinc-rich primer, allowing zinc to preferentially oxidize in corrosive environments, forming sacrificial anode protection and preventing damage to the casting. The substrate of the main body 1 is rust-resistant, providing excellent corrosion resistance. Simultaneously, the zinc-rich primer has good adhesion to the surface of the casting body 1, firmly adhering to the metal surface. The second corrosion-resistant coating 601, made of inorganic anti-corrosion paint, features high temperature resistance, acid and alkali resistance, and impermeability. Inside the fire hydrant, it effectively resists the erosion of acids, alkalis, and dissolved oxygen that may be present in the water flow, protecting the inner wall of the casting body 1 from corrosion. The elastic coating 602, made of rubber elastic paint, has good flexibility and elasticity, buffering the impact of water flow on the inner wall of the fire hydrant, reducing stress concentration caused by water hammer effects, and preventing cracking and peeling of the coating. The third corrosion-resistant coating 603, made of phenolic epoxy paint, has excellent corrosion resistance and good tolerance to various chemicals such as water, acids, and alkalis. Its application on the inner wall of the fire hydrant further strengthens the protection against corrosive media, and its high hardness enhances the wear resistance of the inner wall, extending the service life of the fire hydrant.

[0026] It is important to note that the constructions and arrangements of this application shown in several different exemplary embodiments are merely illustrative. Although only a few embodiments are described in detail in this disclosure, those who consult this disclosure will readily understand that many modifications are possible (e.g., changes in the size, dimensions, structure, shape and proportion of various elements, as well as parameter values ​​(e.g., temperature, pressure, etc.), mounting arrangements, use of materials, color, orientation, etc.) without substantially departing from the novel teachings and advantages of the subject matter described in this application). For example, an element shown as integrally formed may be composed of multiple parts or elements, the position of elements may be inverted or otherwise altered, and the nature or number or position of discrete elements may be changed or altered. Therefore, all such modifications are intended to be included within the scope of this utility model. The order or sequence of any process or method steps may be changed or reordered according to alternative embodiments. In the claims, any "device plus function" clause is intended to cover the structure described herein that performs the function, and not only structural equivalents but also equivalent structures. Without departing from the scope of this invention, other substitutions, modifications, alterations, and omissions may be made in the design, operation, and arrangement of the exemplary embodiments. Therefore, this invention is not limited to the specific embodiments, but extends to various modifications that still fall within the scope of the appended claims.

[0027] Furthermore, in order to provide a concise description of exemplary embodiments, not all features of actual embodiments (i.e., those features that are not relevant to the best mode of carrying out the present invention as currently considered, or those features that are not relevant to implementing the present invention) may be omitted.

[0028] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit the scope of protection of this utility model. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this utility model without departing from the essence and scope of the technical solutions of this utility model.

Claims

1. A fire hydrant casting with corrosion protection, comprising a casting body (1), characterized in that: The outer surface of the casting body (1) is coated with a first coating layer (5), which includes a weather-resistant coating (501), a wear-resistant coating (502) and a first corrosion-resistant coating (503). The weather-resistant coating (501) is a fluorocarbon paint, the wear-resistant coating (502) is an epoxy wear-resistant paint, and the first corrosion-resistant coating (503) is a zinc-rich primer. The inner wall of the casting body (1) is coated with a second coating layer (6).

2. A fire hydrant casting with anti-corrosion protection according to claim 1, characterized in that: The second coating layer (6) includes a second corrosion-resistant coating (601), an elastic coating (602) and a third corrosion-resistant coating (603). The second corrosion-resistant coating (601) is an inorganic anti-corrosion coating, the elastic coating (602) is a rubber elastic paint, and the third corrosion-resistant coating (603) is a phenolic epoxy paint.

3. A fire hydrant casting with anti-corrosion protection according to claim 2, characterized in that: The second corrosion-resistant coating (601) is applied to the inner wall of the casting body (1), the elastic coating (602) is applied to the outside of the second corrosion-resistant coating (601), and the third corrosion-resistant coating (603) is applied to the outside of the elastic coating (602).

4. A fire hydrant casting with anti-corrosion protection according to claim 1, characterized in that: The weather-resistant coating (501) is applied to the outside of the wear-resistant coating (502), the wear-resistant coating (502) is applied to the outside of the first corrosion-resistant coating (503), and the first corrosion-resistant coating (503) is applied to the outside of the casting body (1).

5. A fire hydrant casting with anti-corrosion protection according to claim 1, characterized in that: The bottom of the casting body (1) is fixedly connected to a base (3), and a fixing hole (4) is provided on the base (3). A water outlet (2) is provided on the front of the casting body (1).

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