A fully automatic sealing device for overflow pipes

Abstract

This utility model relates to the field of pipeline protection technology and provides a fully automatic sealing device for overflow pipelines, comprising: a connecting base, embedded in the inner wall of the bottom opening of the overflow pipe, with a first embedded part fixedly connected to the inner wall of the connecting base; a sealing cover plate, disposed below the connecting base, with a second embedded part fixedly connected to the top surface of the sealing cover plate; a bending connecting rod, including a first connecting rod and a second connecting rod fixedly connected non-collinearly, one end of the first connecting rod being hinged to the first embedded part, and one end of the second connecting rod being fixedly connected to the second embedded part; a return spring, one end of which is fixed to the side wall of the first embedded part, and the other end of which is fixedly connected to the middle of the first connecting rod; under normal conditions, the return spring tightens the bending connecting rod, and the bending connecting rod drives the sealing cover plate to close the overflow pipe opening; under overflow conditions, the water pressure pushes the sealing cover plate, causing the bending connecting rod to rotate, thus opening the overflow pipe opening; it has the effect of adaptive opening and closing, and simultaneously ensuring reliable sealing and large-flow drainage.

Description

Technical Field

[0001] This utility model relates to the field of pipeline protection technology, specifically to a fully automatic sealing device for overflow pipelines. Background Technology

[0002] Currently, water tanks and other similar equipment typically feature vertically arranged overflow pipes, generally with an open design at the vertical end, protected by stainless steel insect mesh. However, this approach has significant drawbacks: if a low-mesh mesh is used, the pores are insufficient to completely prevent small insects from entering; while a high-mesh mesh improves protection, it can lead to poor overflow drainage. Therefore, existing technology cannot simultaneously meet the requirements of reliable sealing and high-flow-rate drainage. Utility Model Content

[0003] The purpose of this utility model is to provide a fully automatic sealing device for overflow pipes to solve the problem that existing overflow pipes cannot simultaneously achieve reliable sealing and high-flow drainage capacity.

[0004] To achieve the above objectives, the present invention provides a fully automatic overflow pipe sealing device using the following technical solution:

[0005] An automatic overflow pipe sealing device includes:

[0006] A connecting base is embedded in the inner wall of the bottom opening of the overflow pipe, and a first embedded part is fixedly connected to the inner wall of the connecting base;

[0007] A closed cover plate is disposed below the connecting base, and a second embedded part is fixedly connected to the top surface of the closed cover plate;

[0008] The bending link includes a first link and a second link that are fixedly connected without being collinear. One end of the first link is hinged to the first embedded part, and one end of the second link is fixedly connected to the second embedded part.

[0009] The reset spring has one end fixed to the side wall of the first embedded part and the other end fixedly connected to the middle of the first connecting rod.

[0010] Under normal conditions, the reset spring tightens the bending connecting rod, which drives the sealing cover to close the overflow port; in the overflow state, the water pressure pushes the sealing cover, causing the bending connecting rod to rotate and open the overflow port.

[0011] As an optimization of a fully automatic overflow pipe closure device, the included angle between the first link and the second link is 90°.

[0012] As an optimization of a fully automatic sealing device for overflow pipes, the connecting base is made of PVC material, and the outer wall of the connecting base is covered with a rubber layer, the surface roughness of the rubber layer being Ra≥6.3μm.

[0013] As an optimization of a fully automatic overflow pipe sealing device, the surface of the rubber layer is provided with a rough texture structure to increase frictional resistance.

[0014] As an optimization of a fully automatic sealing device for overflow pipes, the connecting base is fitted to the inner wall of the overflow pipe in an interference fit manner.

[0015] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0016] (1) Adaptive sealing and drainage: By combining the bending connecting rod and the return spring, the pipe opening is automatically sealed to block insects when there is no water, and the water pressure drives the mechanism to open when overflowing, ensuring large-flow drainage and solving the contradiction between sealing and drainage in the insect-proof net scheme.

[0017] (2) Improved mechanical reliability: The bending connecting rod allows the sealing cover to be completely separated from the water flow area after opening, which reduces hydraulic loss compared with the traditional hinge structure and effectively improves drainage efficiency.

[0018] (3) Long-term anti-loosening guarantee: The surface roughness of the rubber layer Ra≥6.3μm, combined with the rough texture structure of the surface, forms a mechanical interlocking effect, which is conducive to improving the installation stability of the device, can be adapted to different water pressure scenarios, and effectively reduces maintenance costs. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. 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 an automatic overflow pipe sealing device according to an embodiment of this application;

[0021] Figure 2 This is a cross-sectional view of the fully automatic overflow pipe sealing device under normal conditions according to the embodiments of this application;

[0022] Figure 3 for Figure 2 Enlarged view of point A in the middle;

[0023] Figure 4 This is a cross-sectional view of the fully automatic sealing device for the overflow pipe in the overflow state according to an embodiment of this application.

[0024] In the diagram: 1. Connecting base; 10. Overflow pipe; 11. Rubber layer; 2. Sealing cover; 3. First embedded part; 4. Second embedded part; 5. Bending connecting rod; 51. First connecting rod; 52. Second connecting rod; 6. Return spring. Detailed Implementation

[0025] To make the technical solution and advantages of this utility model clearer, the present utility model and its beneficial effects will be described in further detail below with reference to specific embodiments and accompanying drawings. However, the embodiments of this utility model are not limited thereto.

[0026] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0027] All standard parts used in this utility model can be purchased from the market, and irregular parts can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts and equipment adopt conventional models in the prior art, and the circuit connection adopts conventional connection methods in the prior art, which will not be described in detail here.

[0028] The following is in conjunction with the appendix Figure 1-4 This application will be described in further detail below.

[0029] This application provides a fully automatic sealing device for overflow pipes, which adopts the following technical solution:

[0030] Reference Figure 1 , Figure 2 and Figure 3The fully automatic overflow pipe sealing device includes a connecting base 1, a sealing cover 2, a bending connecting rod 5, and a return spring 6. The connecting base 1 is a hollow cylindrical body, and its cross-sectional shape can be circular, square, or other geometric shapes. The cross-sectional shape of the connecting base 1 is selected to match the shape of the overflow pipe 10 opening. This embodiment shows the matching design for a square overflow pipe 10. For a vertically arranged overflow pipe 10, the connecting base 1 is embedded from bottom to top into the inner wall of the bottom opening of the overflow pipe 10. Preferably, the connecting base 1 and the inner wall of the overflow pipe 10 are embedded in an interference fit. A first embedded part 3 is pre-embedded and fixed in the inner wall of the connecting base 1. The sealing cover 2 is installed below the connecting base 1. The geometry of the sealing cover 2 matches the cross-sectional shape of the connecting base 1. The material of the sealing cover 2 is rubber, which improves the sealing performance when the sealing cover 2 contacts the connecting base 1. The top surface of the closed cover plate 2 is pre-embedded and fixed with a second pre-embedded part 4.

[0031] Reference Figure 2 and Figure 3 The bending link 5 includes a first link 51 and a second link 52. The first link 51 and the second link 52 are not collinear. The ends of the first link 51 and the second link 52 are welded and fixed. The end of the first link 51 away from the welded end is hinged to the side wall of the first embedded part 3. The end of the second link 52 away from the welded end is welded to the top surface of the second embedded part 4. The return spring 6 is a tension spring. One end of the return spring 6 is fixedly connected to the side wall of the first embedded part 3, and the connection point is located above the hinged position of the first link 51. The other end of the return spring 6 is fixedly connected to the periphery of the middle region of the first link 51. The middle region of the first link 51 refers to the region of 30%-70% of the length of the first link 51, such as the midpoint or the trisection point of the first link 51. The preload applied by the return spring 6 to the first link 51 is redirected through the second link 52 and applied to the closing cover plate 2. The preload is applied to the closing cover plate 2 through the bending link 5. The preload force is set according to the working conditions in the actual application environment and the preset value of the maximum working water pressure of the overflow pipe 10. For example, the preload force is set to 1.2 times the maximum working water pressure of the overflow pipe 10. The preload force can be adjusted by replacing the return spring 6 with a different elastic coefficient to adapt to different application environments. The above structural design, through the hinged first link 51 and rigid connection of the second link 52, efficiently converts water flow pressure into rotational torque, which is beneficial to improving the opening and closing response speed.

[0032] Reference Figure 2 and Figure 3Under normal conditions, the water pressure in the overflow pipe 10 is less than or equal to the pre-tightening force. The return spring 6 pulls the first connecting rod 51 to tighten and maintain a horizontal state, causing the bent connecting rod 5 to retract into the connecting base. The second connecting rod 52 then rotates to apply vertical force to the sealing cover 2, driving the sealing cover 2 to close the overflow pipe 10. In the overflow state, the water pressure in the overflow pipe 10 is greater than the pre-tightening force. The water pressure pushes the sealing cover 2 to rotate the bent connecting rod 5. The first connecting rod 51 tilts downward from a horizontal state until it reaches a vertical state. The second connecting rod 52 drives the sealing cover 2 away from the bottom of the connecting base 1, causing the overflow pipe 10 to open.

[0033] In a preferred embodiment of this application, reference is made to Figure 2 and Figure 3 The angle between the first connecting rod 51 and the second connecting rod 52 is 90°, and the bent connecting rod 5 is L-shaped. The first connecting rod 51 and the second connecting rod 52 are perpendicular, so that the closing cover 2 is always parallel to the first connecting rod 51. When the first connecting rod 51 is in a horizontal state, the closing cover 2 is in a horizontal state, and the top edge of the closing cover 2 completely abuts against the bottom edge of the connecting base 1, and the overflow pipe 10 is in a completely closed state; when the first connecting rod 51 is in a vertical state, the closing cover 2 is in a vertical state, and the closing cover 2 is away from the bottom of the connecting base 1, and the overflow pipe 10 is in a completely open state, reducing obstruction to water flow and helping to improve drainage efficiency.

[0034] In a preferred embodiment of this application, reference is made to Figure 4 The main body of the connecting substrate 1 is made of PVC material, which has good resistance to electrochemical corrosion and can adapt to the environment inside the overflow pipe 10, extending its service life. The outer wall of the connecting substrate 1 is covered with a rubber layer 11, the surface roughness Ra of the rubber layer 11 being ≥6.3μm. Testing shows that when the roughness Ra of the rubber layer 11 is 8.0-12.5μm, the coefficient of friction between the rubber layer 11 and the inner wall of the overflow pipe 10 reaches 0.8-1.2, which can withstand the impact of a flow velocity of 10m / s. The contact between the rubber layer 11 and the inner wall of the overflow pipe 10 increases static friction, enhancing the installation stability of the connecting substrate 1. Furthermore, the surface of the rubber layer 11 is roughened, forming a rough textured structure. The interlaced texture created by the roughening process allows the rubber layer 11 to mechanically interlock with the inner wall of the overflow pipe 10, helping to improve installation stability and eliminating the risk of loosening due to material creep during long-term use.

[0035] The application process and implementation principle of this application embodiment are as follows: When there is no water flow in the overflow pipe 10 or the water pressure is lower than the preset value, the preload of the return spring 6 keeps the bending connecting rod 5 in a tightened state, driving the sealing cover 2 to tightly fit the bottom of the connecting base 1, achieving a reliable seal at the opening of the overflow pipe 10 and effectively preventing insects from entering. When the water level rises to the overflow state, the water pressure acts on the bottom of the sealing cover 2. When the pressure exceeds the preload of the return spring 6, the sealing cover 2 is pushed downward, driving the bending connecting rod 5 to rotate around the first embedded part 3. At this time, the first connecting rod 51 rotates from the horizontal position to the vertical position, and the second connecting rod 52 simultaneously pushes the sealing cover 2 away from the pipe opening, forming a smooth drainage channel. After the water flow stops, the return spring 6 automatically pulls the bending connecting rod 5 to reset, driving the sealing cover 2 to re-close the pipe opening. The entire process does not require external control, and the dynamic balance between sealing and drainage is achieved through the adaptive mechanical structure.

[0036] Based on the disclosure and teachings of the above specification, those skilled in the art can make changes and modifications to the above embodiments. Therefore, this utility model is not limited to the specific embodiments described above, and any obvious improvements, substitutions, or modifications made by those skilled in the art based on this utility model are within the protection scope of this utility model. Furthermore, although some specific terms are used in this specification, these terms are only for convenience of explanation and do not constitute any limitation on this utility model.

Claims

1. A full-automatic closure device for an overflow pipe, characterized in that, include: A connecting base (1) is embedded in the inner wall of the bottom opening of the overflow pipe (10), and the inner wall of the connecting base (1) is fixedly connected with a first embedded part (3); A closed cover plate (2) is disposed below the connecting base (1), and a second embedded part (4) is fixedly connected to the top surface of the closed cover plate (2); The bending link (5) includes a first link (51) and a second link (52) that are fixedly connected without collinearity. One end of the first link (51) is hinged to the first embedded part (3), and one end of the second link (52) is fixedly connected to the second embedded part (4). The reset spring (6) is fixed at one end to the side wall of the first embedded part (3) and at the other end to the middle of the first connecting rod (51); Under normal conditions, the reset spring (6) tightens the bending connecting rod (5), and the bending connecting rod (5) drives the sealing cover (2) to close the overflow pipe (10) opening; in the overflow state, the water flow pressure pushes the sealing cover (2), causing the bending connecting rod (5) to rotate, so that the overflow pipe (10) opening is opened.

2. A full-automatic closure device for an overflow pipe according to claim 1, characterized in that The included angle between the first link (51) and the second link (52) is 90°.

3. The full-automatic closure device for an overflow pipe according to claim 1, characterized in that, The connecting substrate (1) is made of PVC material, and the outer wall of the connecting substrate (1) is covered with a rubber layer (11), the surface roughness of the rubber layer (11) being Ra≥6.3μm.

4. The full-automatic closure device for an overflow pipe according to claim 3, characterized in that, The surface of the rubber layer (11) is provided with a rough texture structure to increase frictional resistance.

5. The full-automatic closure device for an overflow pipe according to claim 1, characterized in that, The connecting base (1) is fitted to the inner wall of the overflow pipe (10) in an interference fit manner.

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