A municipal irrigation and drainage pipe

Abstract

The utility model relates to the technical field of municipal irrigation, specifically relates to a municipal irrigation drainage pipe, including main pipeline, its both ends are equipped with water inlet end and drainage end respectively, two groups of intercepting pipes are respectively obliquely connected in the both sides of main pipeline and are towards water inlet end, its terminal is connected with external connection pipe, diversion layer, it is trapezoidal ring -like convex structure, is fixedly pasted in the inner wall of main pipeline near water inlet end, two groups of guide plates are oppositely obliquely set up in the inner wall of main pipeline, are located at the interface of main pipeline and intercepting pipe, and its close end is towards water inlet end. The diversion layer is trapezoidal ring -like convex structure setting, its trapezoidal section guides water flow to gather in the center of pipeline, makes the flow velocity to promote 15% 20%, strengthens the impurity carrying capacity simultaneously, the ring -like continuous structure avoids the right angle dead angle of traditional grid, reduces the probability of fiber class impurities winding, reduces the hydraulic loss simultaneously, and the drainage efficiency is improved 12% under the same water head, and the guide plate cooperates with the guide fin and forms the synergic separation system, and the guide plate obliquely set up forms centripetal separation force field.

Description

Technical Field

[0001] This utility model relates to the technical field of municipal irrigation, specifically to a municipal irrigation drainage pipe. Background Technology

[0002] Municipal irrigation and drainage pipes refer to the network of pipes serving urban public areas, used for transporting irrigation water and discharging excess rainwater / wastewater. They are an important component of urban infrastructure, crucial for maintaining urban green spaces, preventing flooding, and protecting the water environment.

[0003] Existing municipal irrigation and drainage pipelines have long faced two major technical challenges: low impurity interception efficiency. Traditional bar screens can only intercept large-volume debris, and the capture rate of soft impurities such as plastic film and fibers is less than 40%, which can easily cause downstream blockage. During heavy rain, when the water flow is reversed, impurities can easily escape from the interception structure (escape rate > 25%).

[0004] Maintenance costs are high, and cleaning operations require water outages and pipe disassembly (each operation takes ≥30 minutes), with labor costs accounting for 65% of maintenance expenses; metal interception components are prone to deformation and failure under the impact of gravel (average lifespan <3 years), requiring frequent replacement. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model provides a municipal irrigation drainage pipe that can solve the following problems:

[0006] The problems include low impurity interception efficiency and high maintenance costs.

[0007] To solve the above-mentioned technical problems, the present invention proposes the following technical solution:

[0008] A municipal irrigation drainage pipe includes a main pipe with an inlet and a outlet at both ends, two sets of interceptor pipes inclinedly connected to both sides of the main pipe and facing the inlet, with an external pipe connected to the end of each pipe, a flow guide layer in the form of a trapezoidal annular protrusion fixed to the inner wall of the main pipe near the inlet, two sets of guide plates inclined relative to each other on the inner wall of the main pipe at the interface between the main pipe and the interceptor pipes, with their ends facing the inlet, guide fins in the form of arc-shaped plates fixed to the surface of the guide plates and pointing towards the interface between the main pipe and the interceptor pipes, an interceptor frame in the form of an annular frame embedded inside the interceptor pipe, with upper and lower interceptor racks in opposite directions on both sides of its inner wall, a buffer layer filling between the interceptor frame and the interceptor pipe, and an interceptor plate embedded inside the main pipe, with a Z-shaped open structure on the side facing the inlet and an annular frame on the side facing the outlet, the surface of the Z-shaped open structure having conical protrusions.

[0009] Furthermore, the trapezoidal cross-section of the guide layer has an inclination angle of 15°-25°, and the bulge height is 1 / 8-1 / 6 of the pipe diameter.

[0010] Furthermore, the guide plate has an inclination angle of 30°-45°, and the ratio of the arc curvature radius of the guide fin to the diameter of the interceptor tube is 1:1.2.

[0011] Furthermore, the upper intercept rack of the interceptor has an inclination angle of 20°-30°, and the lower intercept rack has an inclination angle of 40°-50°.

[0012] Furthermore, the buffer layer is a EPDM rubber layer with a fluorosilicone coating on its surface.

[0013] Furthermore, the tapered protrusions of the interceptor plate are coated with Teflon, with a height of 5-10 mm and a cone angle of 60°-75°.

[0014] Furthermore, the outer pipe and the interceptor pipe are detachably connected.

[0015] Furthermore, the interceptor tube has a built-in liquid level sensor.

[0016] As can be seen from the above technical solution, the beneficial effects of this utility model are:

[0017] 1. In this utility model, the flow guiding layer is set with a trapezoidal annular protrusion structure. Its trapezoidal cross section guides the water flow to converge towards the center of the pipe, thereby increasing the flow velocity by 15%-20% and enhancing the impurity carrying capacity. Its annular continuous structure avoids the right-angle dead corners of traditional bar screens, reduces the probability of fibrous impurities getting entangled, and reduces hydraulic loss. Under the same water head, the drainage efficiency is increased by 12%.

[0018] 2. In this invention, a guide plate and guide fins form a synergistic separation system. The inclined guide plate creates a centripetal separation force field, utilizing the centrifugal effect of water flow to separate particles with a density >1.1 g / cm³. 3 Impurities are thrown towards the tube wall, while the arc-shaped fins guide the impurities smoothly into the interception tube, reducing jamming. Micro-turbulence is formed between the fins, which in turn breaks up impurity clumps and improves the uniformity of interception.

[0019] 3. In this utility model, the buffer layer combined with the fluorosilicone coating on the surface can effectively absorb impact energy, the rubber layer dissipates more than 70% of the collision energy, protects the interceptor frame from damage caused by gravel impact, prevents oil stains from adhering to the surface, inhibits the growth of microbial films, and maintains sealing within the range of pipe deformation, adapting to foundation settlement.

[0020] 4. In this utility model, the interception tube and the interception frame form a stepped rack interception system. The bidirectional stepped rack design has an upper rack with a forward stepped shape to resist the impact of water flow and prevent impurities from retreating, while the lower rack with a reverse stepped shape forms a "barb effect" to prevent impurities from escaping from the bottom. The built-in liquid level sensor integrates and monitors the height of garbage accumulation in real time, triggering an early warning when the threshold is reached.

[0021] 5. In this utility model, the Z-shaped structure of the interceptor plate, combined with the Teflon conical protrusions on the surface and the Z-shaped open structure facing the water inlet, forms a low-pressure vortex zone, prolonging the contact time of soft impurities. The friction coefficient of the Teflon conical protrusions is <0.05, reducing the sliding resistance of the plastic film by 90%. It is also resistant to chemical corrosion and has a pull-out design, allowing for quick and convenient disassembly and cleaning in actual operation. Attached Figure Description

[0022] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn to scale.

[0023] Figure 1 This is a top view of the overall structure of this utility model;

[0024] Figure 2 This is a top view of the internal structure connection of the interceptor tube in this utility model;

[0025] Figure 3 In this utility model Figure 2 Enlarged view of the structure at point A in the middle.

[0026] Figure label:

[0027] 1. Main pipe; 2. Inlet end; 3. Drain end; 4. Interception pipe; 5. External pipe; 6. Flow guide layer; 7. Guide plate; 8. Interception plate; 9. Interception frame; 10. Buffer layer; 11. Guide fins. Detailed Implementation

[0028] The embodiments of the present invention will now be described in detail with reference to the accompanying drawings. These embodiments are merely illustrative of the present invention and should not be construed as limiting the scope of protection of the present invention.

[0029] See Figure 1-3 As shown, a municipal irrigation drainage pipe includes a main pipe 1 and inlet end 2 and outlet end 3 at both ends. The main pipe 1 is connected to an interceptor pipe 4 and an outer pipe 5. The main pipe 1 is fixedly connected to a flow guide layer 6 and a guide plate 7. An interceptor plate 8 is embedded inside the main pipe 1. An interceptor frame 9 is embedded inside the interceptor pipe 4. A buffer layer 10 is provided between the interceptor frame 9 and the interceptor pipe 4. Guide fins 11 are fixedly connected to the surface of the guide plate 7.

[0030] In this embodiment of the utility model, the flow guiding layer 6 is arranged in a trapezoidal protrusion in the side section, and is arranged in a ring shape to fit the inner wall of the main pipe 1. It is located at the water inlet end 2. The flow guiding layer 6 is arranged in a trapezoidal ring protrusion structure. Its trapezoidal cross section guides the water flow to converge towards the center of the pipe (Venturi effect), which increases the flow velocity by 15%-20% and enhances the impurity carrying capacity. Its ring continuous structure avoids the right-angle dead corners of traditional bar screens, reduces the probability of fibrous impurities getting entangled, and reduces hydraulic loss. Under the same water head, the drainage efficiency is increased by 12%.

[0031] The guide plates 7 are inclined inwards, with two sets on either side of the main pipe 1, their constricted ends facing the inlet end 2. The guide plates 7 are located at the junction of the main pipe 1 and the interceptor pipe 4. Two sets of guide fins 11 are adjacent to each other on the outer surface of the guide plates 7, both arranged in an arc shape facing backwards (towards the junction of the main pipe 1 and the interceptor pipe 4). The guide plates 7 and guide fins 11 form a coordinated separation system. The inclined guide plates 7 create a centripetal separation force field, utilizing the centrifugal effect of water flow to separate water with a density >1.1 g / cm³. 3 Impurities are thrown towards the tube wall (separation efficiency reaches 92%), while the arc-shaped fins guide the impurities smoothly into the interception tube 4, reducing jamming. Micro-turbulence is formed between the fins, which then breaks up the impurity clumps and improves the uniformity of interception.

[0032] Two sets of interceptor pipes 4 are installed, inclined along both sides of the main pipe 1 (inclined towards the inlet end 2). The interceptor frame 9 is set in a ring shape. Both sides of its inner wall are provided with interceptor racks that are raised in a stepped manner. The step direction of the upper interceptor rack is opposite to that of the lower interceptor rack. The interceptor pipe (4) is equipped with a liquid level sensor. The buffer layer 10 is set as a rubber buffer layer, specifically a EPDM rubber layer, with a fluorosilicone coating on the surface. The buffer layer 10, together with the fluorosilicone coating on the surface, can effectively absorb impact energy. The rubber layer dissipates more than 70% of the collision energy, protects the interceptor frame 9 from damage caused by gravel impact, prevents oil stains from adhering to the surface, inhibits the growth of microbial film, and maintains sealing within the pipe deformation range to adapt to foundation settlement.

[0033] The interceptor tube 4 and the interceptor frame 9 form a stepped rack and pinion interception system. The bidirectional stepped rack design has an upper rack with a forward stepped shape to resist water flow impact and prevent impurities from flowing back (anti-backflow efficiency >95%), while the lower rack with a reverse stepped shape forms a "barb effect" to prevent impurities from escaping from the bottom. The built-in liquid level sensor integrates and monitors the height of garbage accumulation in real time. When the threshold is reached, an early warning is triggered (avoiding a blockage rate of 99%).

[0034] The interceptor plate 8 is arranged horizontally in a "Z" shape on both sides. It is open towards the water inlet end 2 and is a ring frame towards the drain end 3. The two sides of the horizontally arranged "Z" shape are provided with conical protrusions, which are coated with Teflon.

[0035] The Z-shaped structure of the interceptor plate 8, combined with the Teflon conical protrusions on the surface and the Z-shaped open structure facing the water inlet 2, forms a low-pressure vortex zone, extending the contact time of soft impurities (improving the capture rate to 88%). The Teflon conical protrusion friction coefficient is <0.05, reducing the sliding resistance of the plastic film by 90%. It is also resistant to chemical corrosion and has a pull-out design, allowing for quick and easy disassembly and cleaning in actual operation.

[0036] Water flows into the main pipe 1 from the inlet 2. After being guided and concentrated by the flow guide layer 6, two sets of inwardly inclined guide plates 7 separate large-volume garbage and impurities in the water flow to both sides. Under the action of the guide fins 11, the large-volume garbage and impurities enter the interception pipe 4 connected to the main pipe 1. As the water flows, the garbage and impurities are intercepted by the interception frame 9 and concentrated in the interception pipe 4. The remaining water flows along the main pipe 1 to the drain end 3. During this process, soft garbage and impurities are affected by the interception plate 8 and concentrated on the conical protrusions on its surface. Finally, the water flows outward from the drain end 3. Subsequent users can separate the outer pipe 5 from the interception pipe 4, remove the interception frame 9 for cleaning, and simultaneously clean the guide fins 10 on the guide plate 7 through the opening end of the interception pipe 4. When cleaning the interception plate 8, it can be directly removed from the drain end 3.

[0037] This device is equipped with Level 1 interception:

[0038] Guided separation: water enters from the inlet end 2, is accelerated by the flow guide layer 6, and large-volume impurities such as branches and stones are pushed to both sides of the pipe wall by the inclined guide plate 7, and slide into the interception pipe 4 under the arc guidance of the guide fin 11.

[0039] Level 2 interception:

[0040] The rack traps impurities, which are impacted by the water flow inside the interception pipe 4 and captured by the bidirectional stepped rack interceptor 9: the upper rack prevents the impurities from retreating in the stepped direction, and the lower rack prevents the impurities from being washed away in the stepped direction. The rubber buffer layer 10 absorbs the collision energy of the impurities and reduces noise.

[0041] Level 3 interception:

[0042] Adsorption and retention: Soft impurities (plastic film, fibers, etc.) in the remaining water flow through the interceptor plate 8. The "Z"-shaped open structure forms a turbulent zone, causing the impurities to be hooked and adsorbed after contacting the conical protrusions. The annular frame prevents impurities from entering the drainage end.

[0043] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model, and they should all be covered within the scope of the claims and specification of this utility model.

Claims

1. A municipal irrigation drainage pipe, characterized in that: The system includes a main pipe (1) with an inlet (2) and a drain (3) at its two ends. Two sets of interceptor pipes (4) are inclinedly connected to both sides of the main pipe (1) and face the inlet (2). An external pipe (5) is connected to the end of the pipe. The guide layer (6) has a trapezoidal annular protrusion structure and is fixed to the inner wall of the main pipe (1) near the inlet (2). Two sets of guide plates (7) are inclined relative to each other on the inner wall of the main pipe (1) and located at the interface between the main pipe (1) and the interceptor pipes (4). Their ends face the inlet (2). The guide fins (11) are arc-shaped. The interceptor (9) is a ring-shaped frame embedded inside the interceptor (4). The inner walls of the frame are provided with upper and lower interceptor racks with opposite stepped directions. The buffer layer (10) is filled between the interceptor (9) and the interceptor (4). The interceptor plate (8) is embedded inside the main pipe (1). The side facing the water inlet (2) is a Z-shaped open structure, and the side facing the drain (3) is a ring-shaped frame. The surface of the Z-shaped open structure is provided with conical protrusions.

2. The municipal irrigation drainage pipe according to claim 1, characterized in that: The trapezoidal cross-section of the flow guide layer (6) has an inclination angle of 15°-25° and a protrusion height of 1 / 8-1 / 6 of the pipe diameter.

3. The municipal irrigation drainage pipe according to claim 1, characterized in that: The guide plate (7) has an inclination angle of 30°-45°, and the ratio of the arc curvature radius of the guide fin (11) to the diameter of the interceptor tube (4) is 1:1.

2.

4. The municipal irrigation drainage pipe according to claim 1, characterized in that: The upper intercept rack of the interceptor frame (9) has an inclination angle of 20°-30°, and the lower intercept rack has an inclination angle of 40°-50°.

5. The municipal irrigation drainage pipe according to claim 1, characterized in that: The buffer layer (10) is a EPDM rubber layer with a fluorosilicone coating on its surface.

6. The municipal irrigation drainage pipe according to claim 1, characterized in that: The tapered protrusion surface of the interceptor plate (8) is coated with Teflon, the height of the tapered protrusion is 5-10mm, and the cone angle is 60°-75°.

7. The municipal irrigation drainage pipe according to claim 1, characterized in that: The external tube (5) and the interceptor tube (4) are detachably connected.

8. The municipal irrigation drainage pipe according to claim 1, characterized in that: The interceptor tube (4) has a built-in liquid level sensor.

Images