Corrosion-resistant precast concrete drain

Abstract

The application provides a kind of corrosion-resistant prefabricated concrete drain pipe, including pipe body, fixed unit and connecting bolt, locking nut, pipe body includes body and boss, boss is equipped with the both sides of body, fixed unit includes first fastener and second fastener, first fastener, second fixed piece includes the semicircular fixed ring of symmetrical arrangement, fixed seat and first bolt, both sides semicircular fixed ring is equipped with second connecting hole opposite side, wherein first fastener side still includes connecting rod, second fastener side is equipped with matching hole, connecting bolt and locking nut are matched with second connecting hole.This application uses boss to be fixed with first fastener and second fastener, wherein first fastener, second fixed piece opposite side is equipped with connecting rod and matching hole respectively, connecting rod and matching hole are correspondingly arranged, ensure installation precision and accuracy, cooperate sealing ring and rubber washer ensure the sealing property between pipe body, the corrosion-resistant layer in pipe body improves the corrosion-resistant performance of pipe body.

Description

Technical Field

[0001] This application relates to the field of building construction technology, and more specifically, to a corrosion-resistant precast concrete drainage pipe. Background Technology

[0002] The content in this section provides only background information related to this application and may not constitute prior art.

[0003] Drainage pipes primarily handle the drainage of rainwater, sewage, and agricultural irrigation. They are categorized into plastic drainage pipes, concrete pipes, and reinforced concrete pipes. Concrete pipes are widely used due to their simple structure and low cost. Currently, most concrete pipes available on the market are made from sand, gravel, and cement.

[0004] Urban drainage pipes are used to discharge rainwater and sewage. Currently, during the installation of most equipment, gaps easily appear at the joints between pipes, allowing corrosive liquids to seep into the pipes, causing corrosion and rendering the equipment unusable. This reduces the equipment's practicality and increases its failure rate, and improvements are needed to address this issue. Utility Model Content

[0005] In view of this, the purpose of this application is to provide a corrosion-resistant precast concrete drainage pipe, which uses a fixing unit to connect the pipe body. The first fastener and the second fixing member are respectively provided with connecting rods and mating holes on opposite sides to ensure installation accuracy. The mating sealing ring and rubber gasket ensure the sealing between the pipe bodies. The corrosion-resistant layer inside the pipe body improves the corrosion resistance of the pipe body and has a low failure rate.

[0006] The objective of this application is achieved through the following technical solution: a corrosion-resistant precast concrete drainage pipe, comprising a pipe body, a fixing unit, connecting bolts, and locking nuts, characterized in that the pipe body comprises a main body and a boss, the main body being a hollow cylindrical structure with openings on both sides, the boss being provided on both sides of the main body, and the boss being provided with a first connecting hole, the fixing unit comprising a first fastener and a second fastener, wherein the first fastener and the second fastener are respectively provided on the two side bosses of the main body, the first fastener and the second fastener comprising symmetrically arranged semi-circular fixing rings, fixing seats and a first bolt, the inner wall of the semi-circular fixing ring being provided with a protrusion, the upper part of the semi-circular fixing ring being fixed with a fixing seat, the fixing seats being fixed together by the first bolt, and the two sides of the semi-circular fixing rings being provided with a second connecting hole on opposite sides, wherein the first fastener side also includes a connecting rod, the second fastener side is provided with a mating hole, and the connecting bolts and locking nuts are mated with the second connecting holes.

[0007] In some possible embodiments, a sealing groove is provided on one side of the boss, and a sealing ring is provided in the sealing groove.

[0008] In some possible embodiments, the diameter of the boss is larger than the diameter of the body, and the boss has a certain width.

[0009] In some possible embodiments, the inner wall of the body is embedded with a corrosion-resistant layer.

[0010] In some possible embodiments, the corrosion-resistant layer is an epoxy resin coating.

[0011] In some possible embodiments, a rubber washer is provided on the opposite side of the semicircular retaining ring.

[0012] In some possible embodiments, the radius of the semicircular retaining ring is equal to the outer circumference radius of the boss.

[0013] In some possible embodiments, the diameter of the connecting bolt is equal to the diameter of the second connecting hole.

[0014] The technical solution of this application embodiment has at least the following advantages and beneficial effects:

[0015] This application utilizes a fixing unit to connect the pipe bodies, wherein the boss is used to fix it with the first fastener and the second fastener. The first fastener and the second fixing member are respectively provided with connecting rods and mating holes on opposite sides. The connecting rods and mating holes are set in a corresponding manner to ensure installation accuracy and precision. The mating sealing ring and rubber gasket ensure the sealing between the pipe bodies. The corrosion-resistant layer inside the pipe body improves the corrosion resistance of the pipe body and has a low failure rate. Attached Figure Description

[0016] Figure 1 A schematic diagram of the overall structure of a corrosion-resistant precast concrete drainage pipe is provided for some embodiments of this application;

[0017] Figure 2 Another overall structural schematic diagram of a corrosion-resistant precast concrete drainage pipe provided for some embodiments of this application;

[0018] Figure 3 for Figure 2 A detailed structural diagram of point A in the middle;

[0019] Figure 4 for Figure 2 Rear view and detailed structural diagram of the second fastener;

[0020] Figure 5 A schematic diagram of the structure of the boss in a corrosion-resistant precast concrete drainage pipe provided for some embodiments of this application;

[0021] Figure 6 This is a schematic diagram of the specific structure at the fixed unit.

[0022] Icons: 1. Tube body; 11. Main body; 12. Boss; 121. First connecting hole; 2. Fixing unit; 3. Connecting bolt; 4. First fastener; 41. Connecting rod; 5. Second fastener; 51. Mating hole; 6. Semi-circular fixing ring; 61. Protrusion; 62. Second connecting hole; 7. Fixing seat; 8. First bolt; 9. Sealing groove. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of this application clearer, the technical solutions of this application will be clearly and completely described below in conjunction with specific embodiments. The same reference numerals in the accompanying drawings represent the same components. It should be noted that the described embodiments are only some, not all, of the embodiments of this application. All other embodiments obtained by those skilled in the art based on the described embodiments of this application without creative effort are within the scope of protection of this application.

[0024] Compared to the embodiments shown in the accompanying drawings, feasible embodiments within the scope of this application may have fewer components, other components not shown in the drawings, different components, differently arranged components, or components with different connections, etc. Furthermore, two or more components in the drawings may be implemented in a single component, or a single component shown in the drawings may be implemented as multiple separate components.

[0025] Please refer to Figures 1-6 , Figure 1 , Figure 2 A schematic diagram of the overall structure of a corrosion-resistant precast concrete drainage pipe is provided for some embodiments of this application; Figure 3 for Figure 2 A detailed structural diagram of point A or a detailed structural diagram of the first fastener; Figure 4 for Figure 2 The rear view or a schematic diagram of the specific structure of the second fastener; Figure 5 A schematic diagram of the structure of the boss in a corrosion-resistant precast concrete drainage pipe provided for some embodiments of this application; Figure 6 This is a schematic diagram of the specific structure at the fixed unit.

[0026] See appendix Figure 1-6 The present application proposes a corrosion-resistant precast concrete drainage pipe, which includes a pipe body 1, a fixing unit 2, connecting bolts 3, and locking nuts. The pipe body 1 includes a main body 11 and a boss 12. The main body 11 is a hollow cylindrical structure with openings on both sides. The boss 12 is provided on both sides of the main body 11. The boss 12 is provided with a first connecting hole 121, wherein the first connecting holes 121 are equally spaced on the outer circumference of the boss 12. The main body 11 and the boss 12 are manufactured as a whole in the factory using a mold.

[0027] The fixing unit 2 includes a first fastener 4 and a second fastener 5, which are respectively disposed on the two side bosses 12 of the main body 11, and the first fastener 4 and the second fastener 5 cooperate with the outer circumference of the bosses 12. Specifically, the first fastener 4 and the second fixing unit include symmetrically arranged semi-circular fixing rings 6, fixing seats 7, and first bolts 8. The inner wall of the semi-circular fixing ring 6 is provided with a protrusion 61, and the fixing seat 7 is fixed above the semi-circular fixing ring 6. The fixing seats 7 are fixed together by the first bolts 8. See Appendix. Figure 6 The protrusion 61 is located on the inner circumference of the semicircular fixing ring 6. When the symmetrically arranged semicircular fixing ring 6 is fixed by the first bolt 8, the protrusion 61 cooperates with the first connecting hole 121 on the boss 12 to fix the fixing unit 2 and the tube body 1.

[0028] Among them, the two semi-circular fixing rings 6 on opposite sides are provided with a second connecting hole 62. The connecting bolt 3 and the locking nut cooperate with the second connecting hole 62. There are 4 connecting bolts 3 and the second connecting hole 62. The two sides of the second connecting hole 62 are fixed by the connecting bolts 3 and the locking nut, thereby realizing the fixed connection of the adjacent pipe body 1.

[0029] The first fastener 4 includes a connecting rod 41 on one side, and the second fastener 5 has a mating hole 51 on one side. When adjacent pipe bodies 1 are connected, the connecting rod 41 is inserted into the mating hole 51 to achieve the connection of adjacent pipe bodies 1. The installation is firm and precise. Finally, the second connecting hole 62 is locked by the connecting bolt 3.

[0030] Specifically, a sealing groove 9 is provided on one side of the boss 12, and a sealing ring is provided in the sealing groove 9. The cooperation between the sealing groove 9 and the sealing ring can ensure that the bosses 12 of adjacent pipe bodies 1 are in a surface contact sealing state.

[0031] The diameter of the boss 12 is larger than that of the body 11. The boss 12 has a certain width and height, which facilitates its cooperation with the fixing unit 2 and increases the contact area at the joint of adjacent tubes 1.

[0032] Specifically, the inner wall of the body 11 is embedded with a corrosion-resistant layer, which is an epoxy resin coating. This layer provides excellent corrosion resistance to the pipe body 1 and will not peel off or crack from the inner wall of the pipe body 1 when subjected to external and environmental factors. It has excellent durability and improves the service life of the drainage pipe.

[0033] Specifically, a rubber gasket is provided on the opposite side of the semicircular fixing ring 6. The rubber gasket can also seal the opposite contact side of the semicircular fixing ring 6, thereby improving the overall sealing performance.

[0034] The radius of the semicircular retaining ring 6 is equal to the outer circumference radius of the boss 12. The semicircular retaining ring 6 fits tightly with the outer circumference of the boss 12, improving the tightness between the semicircular retaining ring 6 and the boss 12 and enhancing the sealing performance. The diameter of the connecting bolt 3 is equal to the diameter of the second connecting hole 62, and the connection between the connecting bolt 3 and the second connecting hole 62 achieves a tight fit.

[0035] Working principle: In use, the pipe body 1 is first connected by the fixing unit 2. The boss 12 is used to fix the first fastener 4 and the second fastener 5. The protrusion 61 is set on the inner circumference of the semi-circular fixing ring 6. After the protrusion 61 of the semi-circular fixing ring 6 is engaged with the first connecting hole 121 on the boss 12, the fixing unit 2 is fixed by the first bolt 8. The first fastener 4 and the second fixing member are respectively provided with connecting rod 41 and mating hole 51 on opposite sides. Then, the connecting rod 41 is engaged with the mating hole 51 to accurately fix the two adjacent pipe bodies 1. Finally, the connecting bolt 3 and the locking nut are used to fix the two sides of the second connecting hole 62, thereby realizing the fixed connection of the adjacent pipe bodies 1.

[0036] The above are merely preferred embodiments of this application and are not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art, all of which fall within the protection scope of this utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A corrosion-resistant precast concrete drainage pipe, comprising a pipe body (1), a fixing unit (2), connecting bolts (3), and a locking nut, characterized in that, The tube body (1) includes a body (11) and a boss (12). The body (11) is a hollow cylindrical structure with openings on both sides. The boss (12) is located on both sides of the body (11). The boss (12) is provided with a first connecting hole (121). The fixing unit (2) includes a first fastener (4) and a second fastener (5). The first fastener (4) and the second fastener (5) are respectively located on the bosses (12) on both sides of the body (11). The first fastener (4) and the second fastener include symmetrically arranged semi-circular fixing rings. (6) Fixing base (7) and first bolt (8), the inner wall of the semicircular fixing ring (6) is provided with a protrusion (61), the fixing base (7) is fixed above the semicircular fixing ring (6), the fixing bases (7) are fixed together by the first bolt (8), the two sides of the semicircular fixing ring (6) are also provided with a second connecting hole (62) on the opposite side, the first fastener (4) is also provided with a connecting rod (41) on one side, the second fastener (5) is provided with a mating hole (51) on one side, the connecting bolt (3) and the locking nut are mated with the second connecting hole (62).

2. The corrosion-resistant precast concrete drainage pipe according to claim 1, characterized in that, A sealing groove (9) is provided on one side of the boss (12), and a sealing ring is provided in the sealing groove (9).

3. The corrosion-resistant precast concrete drainage pipe according to claim 1, characterized in that, The diameter of the boss (12) is larger than the diameter of the body (11), and the boss (12) has a certain width.

4. The corrosion-resistant precast concrete drainage pipe according to claim 1, characterized in that, The inner wall of the body (11) is embedded with a corrosion-resistant layer.

5. A corrosion-resistant precast concrete drainage pipe according to claim 4, characterized in that, The corrosion-resistant layer is an epoxy resin coating.

6. The corrosion-resistant precast concrete drainage pipe according to claim 1, characterized in that, The semicircular fixing ring (6) has a rubber gasket on the opposite side.

7. A corrosion-resistant precast concrete drainage pipe according to claim 1, characterized in that, The radius of the semicircular fixing ring (6) is equal to the outer circumference radius of the boss (12).

8. A corrosion-resistant precast concrete drainage pipe according to claim 1, characterized in that, The diameter of the connecting bolt (3) is equal to the diameter of the second connecting hole (62).

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