Flap valve structure for drainage

Abstract

The utility model belongs to a flap valve structure for drainage in the technical field of drainage engineering. An opening (5) is formed in the middle of the flap valve seat (1), the flap valve cover (3) is movably connected to the upper portion of one side of the flap valve seat (1), and the sealing piece (2) is arranged on the inner side face of the flap valve cover (3) and aligned to the sealing end (6) of the flap valve seat (1). An installation groove (7) of an annular structure is formed in the inner side face of the flap valve cover (3), the sealing piece (2) is a sealing ring, and the sealing piece (2) is installed in the installation groove (7) in a clamped mode. The flap valve structure for drainage is simple in structure, convenient to install and maintain in the later period, energy-saving, long in service life and wide in application, and external force does not need to be manually applied when the flap valve is opened and closed.

Description

Technical Field

[0001] This utility model belongs to the field of drainage engineering technology, and more specifically, it relates to a flap gate structure for drainage. Background Technology

[0002] A flap gate is a one-way valve installed on riverbanks or at the outlet of water supply and drainage systems. It opens and closes based on the pressure difference between the inside and outside of the flap gate cover. When the tide level is higher than the water level inside the pipe, the flap gate automatically closes, preventing tide water from entering the pipe and preventing backflow of sea, river, or lake water. When the tide rises ashore under wind force, water from the shore can flow into the river through the flap gate. The disadvantages of existing technology are: complex gate structure, inconvenient installation and subsequent maintenance, and high maintenance costs.

[0003] Existing technology includes a device titled "A Flap Valve" with publication number CN101929570A, which relates to a one-way valve device for backflow prevention and flow interruption in water supply and drainage engineering. It includes a flap valve seat and a flap valve cover hinged to the seat. A sealing ring is circumferentially arranged on the outlet end face of the flap valve seat. The flap valve cover has an internal cavity with an injection hole and an outlet hole communicating with the cavity. A control device is connected to the flap valve to control the amount of liquid in the cavity of the flap valve cover. In use, water can be added to the float box via an upper injection port using a pump to increase the weight of the flap valve cover, thereby closing it. When water is discharged from the flap valve, if the cover is too heavy to open easily, the lower injection port can be opened, and the pump can be turned on to release some or all of the water, reducing the weight of the flap valve cover and thus opening it.

[0004] However, this technology does not address the technical issues and solutions of this application. Utility Model Content

[0005] The technical problem to be solved by this utility model is to provide a drainage flap gate structure that is simple in structure, easy to install and maintain, does not require manual external force when opening and closing, is more energy-efficient, has a long service life and wide range of applications, in view of the shortcomings of the existing technology.

[0006] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows:

[0007] This utility model is a flap gate structure for drainage. The flap gate seat has an opening in the middle, and a flap gate cover is movably connected to the upper part of one side of the flap gate seat. A sealing element is provided on the inner side of the flap gate cover, and the sealing element is aligned with the sealing end of the flap gate seat.

[0008] The inner side of the flap cover is provided with an annular mounting groove, and the sealing element is a sealing ring, which is fitted into the mounting groove.

[0009] The thickness of the sealing member is greater than the depth of the mounting groove, the sealing member extends outside the mounting groove, and the sealing member protrudes from the surface of the flap cover.

[0010] The sealing position of the sealing member protrudes outward from the side of the flap seat, and the sealing position has a slope structure.

[0011] The flap seat flange surface of the flap seat is provided with a plurality of openings along a circumference.

[0012] The flap seat flange surface of the flap seat is connected with the pipeline flange of the pipeline.

[0013] The surface of the flap seat flange surface of the flap seat is provided with a water line.

[0014] A rubber sealing gasket is arranged between the flap seat flange surface and the pipeline flange.

[0015] The flap cover and the sealing position end surface of the flap seat form an included angle alpha, and the size of the included angle alpha is between 10°-20°.

[0016] The flap seat and the flap cover are both made of nodular cast iron material.

[0017] The technical scheme of the utility model has the following working principle and beneficial effects:

[0018] The flap structure for drainage, the flap seat and the pipeline discharge port are connected through a flange structure, and the bolt is used to realize the fixed connection of the two flange structures. The sealing member is arranged on the surface of the sealing end of the flap cover close to the flap seat, and the sealing member is fixedly arranged on the flap cover. The connecting seat is arranged on the flap seat, the connecting rod is arranged on the flap cover, the connecting pin shaft passes through the connecting seat and the connecting rod to realize the movable connection of the flap cover and the flap seat, and the flap cover can be flexibly turned relative to the flap seat. In this way, the automatic opening and closing of the flap cover can be realized by the water pressure. When the water pressure on the inner side of the flap is greater than the pressure on the outer side of the flap, the water pressure pushes the flap cover to turn outward relative to the flap seat, so that the opening of the flap seat is opened, and the automatic opening of the flap cover is realized. On the contrary, when the water pressure on the outer side of the flap is greater than the pressure on the inner side of the flap, the water pressure pushes the flap cover to turn towards the flap seat, so that the opening of the flap seat is closed, and the automatic closing of the flap cover is realized. The product with the above structure is suitable for various water qualities and complex working conditions. The beneficial effects of the structure of the utility model are as follows: (1) more energy-saving (the flap door does not need manual external force, and the maintenance cost is low); (2) long service life (simple mechanical structure, durable); (3) convenient to use (easy to install and maintain); (4) wide application (applied to different water-related fields). BRIEF DESCRIPTION OF DRAWINGS

[0019] The content expressed by each figure of the specification and the marks in the figure are briefly described as follows:

[0020] Figure 1 It is the front view structural schematic drawing of the flap structure for drainage;

[0021] Figure 2 It is the front view structural schematic drawing of the flap structure for drainage; Figure 1 It is the front view structural schematic drawing of the flap structure for drainage;

[0022] In the drawing, marks are respectively: 1, flap seat; 2, sealing element; 3, flap cover; 4, connecting pin shaft; 5, opening; 6, sealing end; 7, installation groove; 8, flap seat flange surface; 9, opening; 10, pipeline (pipeline discharge port); 11, pipeline flange; 12, water line. DETAILED DESCRIPTION

[0023] The shape, structure, mutual position and connecting relationship between parts, the function and working principle of each part of the specific embodiment of the utility model are further explained in detail by comparing with the drawings and describing the embodiment as follows:

[0024] As shown in the accompanying Figure 1 , the accompanying Figure 2The utility model discloses a flap structure for drainage, the middle of flap seat 1 is provided with opening 5, the upper portion of one side of flap seat 1 is movably connected with flap cover 3, the inner side of flap cover 3 is provided with sealing element 2, and sealing element 2 is aligned with the sealing end 6 of flap seat 1. The above structure, aiming at the deficiency in the prior art, proposes an improved technical scheme. When the structure is set, the flap seat 1 and the pipeline discharge port are connected by flange structure, and the fixed connection of the two flange structures is realized by the bolt. The side surface of the sealing end 6 of flap seat 1 of flap cover 3 is provided with sealing element 2, sealing element 2 is fixedly arranged on flap cover 3, a connecting seat is arranged on flap seat 1, a connecting rod is arranged on flap cover 3, and connecting pin shaft 4 passes through the connecting seat and the connecting rod to realize the movable connection of flap cover 3 and flap seat 1, so that flap cover 3 can be flexibly turned over relative to flap seat 1. In this way, the automatic opening and closing of flap cover 3 can be realized by the water pressure. When the water pressure inside the flap is greater than the pressure outside the flap, the water pressure pushes the flap cover to turn over relative to the flap seat, the opening 5 of the flap seat is opened, the automatic opening of the flap cover 3 is realized, and vice versa. When the water pressure outside the flap is greater than the pressure inside the flap, the water pressure pushes flap cover 3 to turn over towards the direction of flap seat 1, the opening 5 of the flap seat is closed, and the automatic closing of the flap cover 2 is realized. The product of the above structure is suitable for various water qualities and complex working conditions. The structure of the utility model has the advantages of (1) more energy saving (no manual external force is needed to open and close the flap, and the maintenance cost is low); (2) long service life (simple mechanical structure, durable); (3) convenient to use (easy to install and maintain later); (4) wide application (in the field of water). The flap structure for drainage has the advantages of simple structure, convenient installation and maintenance, no manual external force is needed to open and close the flap, more energy saving, long service life and wide application.

[0025] The inner side of the flap cover 3 is provided with an annular mounting groove 7, the sealing element 2 is a sealing ring, and the sealing element 2 is clamped in the mounting groove 7. The thickness of the sealing element 2 is greater than the depth of the mounting groove 7, the sealing element 2 extends to the outside of the mounting groove 7, and the sealing element 2 protrudes from the surface of the flap cover 3. The above structure, the mounting groove 7 is formed in one processing when the flap cover is processed, the mounting groove 7 is used for fixing and mounting the sealing element 2, and the sealing element 2 is a rubber sealing ring. The width of the mounting groove 7 is less than the width of the sealing element 2, so that the sealing element 2 can be reliably clamped and fixed in the mounting groove 7, the depth of the mounting groove 7 is less than the thickness of the sealing element 2, so that the sealing element 2 is in the state of protruding from the surface of the flap cover 3 after being mounted. In this way, when the flap cover 3 is closed relative to the flap seat 1, the flap cover 2 and the flap seat 1 can be reliably pressed and sealed.

[0026] The sealing position 6 is convex to one side of the flap seat 1, and the sealing position 6 is in a slope structure. The flap cover 3 and the sealing position 6 of the flap seat 1 form an angle α, and the size of the angle α is between 10°-20°. When the sealing cover 3 is closed by adhering to the sealing position 6 of the flap seat 1, the sealing cover 3 is in an inclined state and forms an angle α with the horizontal line.

[0027] The flap seat flange surface 8 of the flap seat 1 is provided with a plurality of openings 9 along a circumference. The flap seat flange surface 8 of the flap seat 1 is connected with the pipeline flange 11 of the pipeline 10. The surface of the flap seat flange surface 8 is provided with a water line 12. The rubber sealing gasket is arranged between the flap seat flange surface 8 and the pipeline flange 11. When the flap seat 1 is connected with the pipeline flange 11 of the pipeline 10, the rubber sealing gasket is clamped between the two flange surfaces, and the water line improves the sealing capacity between the flanges.

[0028] The flap seat 1 and the flap cover 3 are both made of nodular cast iron. The flap seat 1 and the flap cover 3 are both made of nodular cast iron, and the grade QT420-5 is selected. When processing, the short-flow lost foam or static pressure line casting process is used for production and molding, and the integrity is good. The material of the connecting shaft pin 4 is A2-70, and the material of the sealing element 2 is butyl rubber.

[0029] The flap seat 1 and the flap cover 3 are made of nodular cast iron, and the flap has good corrosion resistance, long service life, high strength, convenient and flexible installation, low maintenance cost, and the material itself can be recycled and recycled. The product replaces the traditional gate, and has the advantages of energy saving, long service life, and convenient installation.

[0030] The utility model discloses a flap structure for drainage, when the structure is set, the flange structure connection of flap seat 1 and pipeline discharge mouth is adopted, and the fixed connection of two flange structures is realized through bolt. The one side surface of the sealing end 6 of flap cover 3 close to flap seat 1 is provided with sealing element 2, and sealing element 2 is fixedly arranged on flap cover 3, and the connecting seat is arranged on flap seat 1, and the connecting rod is arranged on flap cover 3, and the movable connection of flap cover 3 and flap seat 1 is realized through connecting pin shaft 4 passing through connecting seat and connecting rod, and it is ensured that flap cover 3 can be flexibly turned over relative to flap seat 1. In this way, the automatic opening and closing of flap cover 3 can be realized by water pressure. When the water pressure of the inside of flap is greater than the pressure of the outside of flap, the water pressure pushes flap cover to turn over outward relative to flap seat, realizes the opening of the opening 5 of flap seat, realizes the automatic opening of flap cover 3, and vice versa, when the water pressure of the outside of flap is greater than the pressure of the inside of flap, the water pressure pushes flap cover 3 to turn over to the direction close to flap seat 1, realizes the closing of the opening 5 of flap seat, realizes the automatic closing of flap cover 2. The product of the above structure is suitable for various water quality and complex working conditions. The beneficial effects of the structure of the utility model are: (1) more energy saving (the switch flap does not need manual external force, and the maintenance cost is low);(2) long service life (simple mechanical structure, durable);(3) convenient to use (easy to install and maintain);(4) wide application (applied to different water-related fields).

[0031] The utility model has been described above in conjunction with the drawings, and obviously, the specific implementation of the utility model is not limited by the above mode, as long as various improvements are made by adopting the method concept and technical scheme of the utility model, or the concept and technical scheme of the utility model are directly applied to other occasions without improvement, all are within the protection scope of the utility model.

Claims

1. A structure of a clapper door for drainage, characterized by: The clap door seat (1) is provided with an opening (5) in the middle, and the clap door seat (1) is movably connected with a clap door cover (3) on the upper side, and the clap door cover (3) is provided with a sealing element (2) on the inner side, and the sealing element (2) is aligned with the sealing end (6) of the clap door seat (1).

2. The drain pet valve structure according to claim 1, characterized by: The inner side of the clap door cover (3) is provided with an annular mounting groove (7), and the sealing element (2) is a sealing ring, and the sealing element (2) is clamped in the mounting groove (7).

3. The drain pet valve structure according to claim 2, characterized by: The thickness of the sealing element (2) is greater than the depth of the mounting groove (7), the sealing element (2) extends to the outside of the mounting groove (7), and the sealing element (2) protrudes from the surface of the clap door cover (3).

4. The drain pet valve structure according to claim 1 or 2, characterized by: The sealing position (6) is outwardly convex to the side of the clap door seat (1), and the sealing position (6) is in a beveled structure.

5. The drain pet valve structure according to claim 1 or 2, characterized by: The clap door seat flange surface (8) of the clap door seat (1) is provided with a plurality of openings (9) along the circumference.

6. The drain pet valve structure according to claim 5, characterized by: The clap door seat flange surface (8) of the clap door seat (1) is connected with the pipeline flange (11) of the pipeline (10).

7. The drain pet valve structure according to claim 5, characterized by: The surface of the clap door seat flange surface (8) of the clap door seat (1) is provided with a water line (12).

8. The drain pet valve structure according to claim 6, characterized by: The clap door seat flange surface (8) and the pipeline flange (11) are provided with a rubber sealing gasket.

9. The drain pet valve structure according to claim 1 or 2, characterized by: The clap door cover (3) and the sealing end (6) of the clap door seat (1) form an included angle α, and the size of the included angle α is between 10°-20°.

10. The drain pet valve structure according to claim 1 or 2, characterized by: The clap door seat (1) and the clap door cover (3) are both made of nodular cast iron.

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