Float flap valve

Abstract

The utility model discloses a buoy flap valve, which belongs to the field of hydraulic engineering and comprises a main pipeline and a door plate, the main pipeline is mounted at the end of a drainage pipe through a flange, supporting seats are symmetrically arranged at the front end of the top of the main pipeline, the ends of the supporting seats are suspended, a rotating shaft is rotatably mounted between the two supporting seats, and the rotating shaft is fixedly connected with the main pipeline. Fixing rods are symmetrically arranged on the surface of the rotating shaft, the fixing rods are perpendicular to the axis of the rotating shaft, the door plate is arranged on the front end face of the main pipeline, the door plate is welded to the two fixing rods, the door plate is matched with an opening in the end of the main pipeline, a first extension rod is coaxially installed at one end of the rotating shaft, and a gear is installed at the end of the first extension rod; the float bowl is arranged on the external liquid level surface, when the liquid level surface rises to a certain position, the float bowl can be driven to move upwards, then the door plate is driven to be closed through cooperation of the sliding rod and the gear, the door plate is prevented from loosening when being vibrated by external liquid, and the reverse effect is guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of water conservancy engineering, and more specifically, to a float gate. Background Technology

[0002] A flap valve is a one-way valve mainly used in water conservancy projects, water supply and drainage systems, and other fields. It is typically installed at the outlet of pipes, channels, or water tanks. Its function is to allow a medium (such as water) to flow out in one direction while preventing the medium from flowing back in, thus acting as a check valve. During operation, when the medium (such as water) in the pipe or tank flows outward under its own pressure, the force of the water flow pushes the flap valve's gate plate to rotate outward around the hinge or connection point, allowing the medium to flow out smoothly. When the internal medium stops flowing, the gate plate closes under the action of external pressure and its own gravity, preventing the external medium from flowing back in.

[0003] When the external liquid level (such as in a sewage tank) is high, the door panel will be closed due to its own weight, but it will be affected by the external liquid oscillation. If the pressure difference between the inside and outside is small, backflow may occur. In addition, existing door panels are mostly supported by materials such as cast iron and steel plates, which are heavy. When the water pressure inside the tank is low, the door panel cannot be opened. At this time, the door panel has a large resistance to drainage, which affects the drainage efficiency. Utility Model Content

[0004] 1. Technical problems to be solved

[0005] In view of the problems existing in the prior art, the purpose of this utility model is to provide a float-type flap gate, which can achieve the following: the external float cooperates with the external liquid level surface to keep the gate in a closed state after the liquid level rises to a certain height.

[0006] 2. Technical Solution

[0007] To solve the above problems, the present invention adopts the following technical solution.

[0008] The float gate includes a main pipe and a gate panel. The main pipe is installed at the end of a drain pipe via a flange. Symmetrical support seats are provided at the front end of the main pipe, with the ends of the support seats suspended. A rotating shaft is rotatably installed between the two support seats. Fixed rods are symmetrically arranged on the surface of the rotating shaft, perpendicular to the axis of the rotating shaft. The gate panel is placed on the front end face of the main pipe and welded to the two fixed rods. The gate panel is adapted to the open end of the main pipe. A first extension rod is coaxially installed at one end of the rotating shaft, with a gear installed at its end. The gear is located outside the support seat. A protrusion is provided on one side of the end of the main pipe, on the same side as the gear. A sliding rod is perpendicularly passed through the surface of the protrusion, located behind the gear. Evenly spaced toothed grooves are provided on the surface of the sliding rod, adapting to the gear. A float body is installed at the bottom of the sliding rod.

[0009] Furthermore, a mounting rod is fixed to the bottom of the slide rod, and limit bolts are symmetrically arranged on both sides of the slide rod surface, with both limit bolts positioned above the protrusion.

[0010] Furthermore, a docking cylinder is vertically fixed at the center of the upper surface of the pontoon body, and the bottom of the mounting rod is installed inside the docking cylinder by bolts.

[0011] Furthermore, a second extension rod is coaxially arranged on the side of the rotating shaft opposite to the first extension rod, and a swing rod is vertically arranged at the end of the second extension rod, with the swing rod and the fixed rod being distributed at 180 degrees.

[0012] Furthermore, a limit plate is provided on the surface of the swing rod, a counterweight is installed on the surface of the swing rod, a locking nut is screwed onto the end of the swing rod, and the counterweight is placed between the limit plate and the locking nut.

[0013] Furthermore, the door panel surface is provided with intersecting reinforcing ribs, and a sealing gasket is installed on the inner surface of the door panel.

[0014] 3. Beneficial effects

[0015] Compared with the prior art, the advantages of this utility model are as follows: This utility model provides a float flap gate, with a float installed on the external liquid level surface. When the liquid level rises to a certain position, it can drive the float to move upward, and then drive the door panel to remain closed through the cooperation of the slide rod and gear, so as to prevent the door panel from loosening when the external liquid vibrates, thus ensuring the reverse effect.

[0016] Additionally, a counterweight is installed at the 180-degree position of the door panel pivot. When the door panel is opened, the counterweight can offset the weight of the door panel itself, thereby reducing the resistance of the door panel's weight to drainage. When the door panel is fully closed, the counterweight is placed vertically above and will not affect the rotation of the door panel. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the installation three-dimensional structure of this utility model;

[0018] Figure 2 This is a schematic diagram of the door panel connection structure of this utility model;

[0019] Figure 3 This is a three-dimensional structural diagram of the pontoon installation of this utility model.

[0020] The following are the labels in the diagram: 1. Main pipe; 11. Support seat; 12. Protrusion; 2. Rotating shaft; 21. Fixed rod; 22. First extension rod; 23. Gear; 24. Second extension rod; 25. Swing rod; 26. Limiting plate; 27. Counterweight; 28. Locking nut; 3. Door panel; 31. Reinforcing rib; 32. Sealing gasket; 4. Sliding rod; 41. Gear groove; 42. Limiting bolt; 43. Mounting rod; 5. Float body; 51. Connecting cylinder. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0022] Example:

[0023] Please see Figure 1 As shown, the float gate includes a main pipe 1 and a gate panel 3. The main pipe 1 is installed at the end of the drain pipe via a flange. Symmetrically arranged support seats 11 are positioned at the top front end of the main pipe 1, with the ends of the support seats 11 tilted forward and suspended. A rotating shaft 2 is rotatably mounted between the two support seats 11. Symmetrically arranged on the surface of the rotating shaft 2 are fixing rods 21, which are perpendicular to the axis of the rotating shaft 2. The gate panel 3 is placed on the front end face of the main pipe 1 and welded to the two fixing rods 21. The gate panel 3 can rotate around the axis of the rotating shaft 2. The gate panel 3 is perpendicular to the main pipe 1. The end openings are matched, and when the door panel 3 is vertically downward, it is in a closed state to seal the port of the main pipe 1. A first extension rod 22 is coaxially installed at one end of the rotating shaft 2, and a gear 23 is installed at the end of the first extension rod 22. The gear 23 is located outside the support seat 11 and can rotate together with the door panel 3. Reinforcing ribs 31 are cross-arranged on the surface of the door panel 3 to improve the strength of the door panel 3. A sealing gasket 32 ​​is installed on the inner surface of the door panel 3 so that the sealing performance can be improved by squeezing the sealing gasket 32 ​​when the door panel 3 is closed.

[0024] Please refer to Figures 1-3 As shown, a protrusion 12 is provided on one side of the end of the main pipe 1. The protrusion 12 is on the same side as the gear 23. A slide rod 4 is vertically inserted through the surface of the protrusion 12. The slide rod 4 has a T-shaped structure to ensure that the slide rod 4 can only slide in the vertical direction and will not rotate. The slide rod 4 is placed behind the gear 23. The surface of the slide rod 4 is evenly provided with tooth grooves 41. The tooth grooves 41 are adapted to the gear 23. When the slide rod 4 moves upward, the door panel 3 is closed by the cooperation of the tooth grooves 41 and the gear 23.

[0025] refer to Figure 1 and Figure 3As shown, a float body 5 is installed at the bottom of the slide rod 4, and an installation rod 43 is fixed at the bottom of the slide rod 4. Limiting bolts 42 are symmetrically arranged on both sides of the surface of the slide rod 4. Both limiting bolts 42 are located above the protrusion 12 to limit the slide rod 4. When the external liquid level drops, the slide rod 4 will not fall off. A docking cylinder 51 is vertically fixed at the center of the upper surface of the float body 5. The bottom of the installation rod 43 is installed inside the docking cylinder 51 by bolts. By controlling the depth of the installation rod 43 inside the docking cylinder 51, the distance between the float body 5 and the main pipe 1 is controlled, and the timing of closing the door plate 3 is controlled. If the door plate 3 is already in the closed state, after the external liquid level reaches a certain height, the upward movement of the slide rod 4 can limit the gear 23 to prevent the door plate 3 from opening.

[0026] refer to Figure 1 and Figure 2 As shown, a second extension rod 24 is coaxially arranged on the side of the rotating shaft 2 away from the first extension rod 22. A swing rod 25 is vertically arranged at the end of the second extension rod 24. The swing rod 25 is distributed at 180 degrees with the fixed rod 21. When the door panel 3 is closed vertically downward, the swing rod 25 is vertically upward. At this time, the weight of the counterweight 27 will not affect the door panel 3 to keep it closed. Conversely, when the door panel 3 is opened, the counterweight 27 will rotate backward to reduce the resistance of the door panel 3 to drainage. A limit plate 26 is provided on the surface of the swing rod 25. The counterweight 27 is installed on the surface of the swing rod 25. A locking nut 28 is screwed on the end of the swing rod 25. The counterweight 27 is placed between the limit plate 26 and the locking nut 28. The size of the counterweight 27 can be adjusted according to the usage environment.

[0027] Working principle: During use, due to the weight of the door panel 3, it is in a vertically downward state when not under pressure, thus sealing the end of the main pipe 1. At this time, the swing rod 25 is vertically upward. During drainage, the water pressure inside the main pipe 1 can tilt the top of the door panel 3, causing the water inside to be discharged through the opening of the door panel 3. This can drive the rotating shaft 2 to rotate at a certain angle, causing the swing rod 25 to rotate backward, thereby reducing the resistance of the door panel 3's own weight to the water. The weight of the counterweight 27 can be adjusted according to the usage environment. At the same time, due to the weight of the float body 5, it can drive... With the sliding rod 4 at the bottom, the limiting bolt 42 is limited by the support seat 11 to maintain stability and will not affect the door panel 3. When the external water level increases, it can drive the float body 5 to move upward, which in turn causes the sliding rod 4 to move upward. After moving to a certain height, the tooth groove 41 can drive the rotating shaft 2 to rotate in the opposite direction through the rotation of the gear 23. At this time, it can drive the door panel 3 to close and prevent it from opening, so as to prevent external sewage from flowing back into the main pipe 1. The depth of the installation rod 43 entering the docking cylinder 51 can be adjusted according to the water level, thereby adjusting the height of the float body 5 relative to the main pipe 1.

[0028] The above description is merely a preferred embodiment of this utility model; however, the protection scope of this utility model is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the technical scope disclosed in this utility model, based on the technical solution and its improved concept, should be included within the protection scope of this utility model.

Claims

1. A pontoon gate, comprising a main pipe (1) and a gate panel (3), characterized in that: The main pipe (1) is installed at the end of the drain pipe via a flange. Symmetrical support seats (11) are provided at the front end of the top of the main pipe (1). The ends of the support seats (11) are suspended. A rotating shaft (2) is rotatably installed between the two support seats (11). Fixed rods (21) are symmetrically arranged on the surface of the rotating shaft (2). The fixed rods (21) are perpendicular to the axis of the rotating shaft (2). A door panel (3) is placed on the front end face of the main pipe (1). The door panel (3) is welded to the two fixed rods (21). The door panel (3) is adapted to the open end of the main pipe (1). The rotating shaft (2)... A first extension rod (22) is coaxially mounted at one end, and a gear (23) is mounted at the end of the first extension rod (22). The gear (23) is placed outside the support base (11). A protrusion (12) is provided on one side of the end of the main pipe (1). The protrusion (12) is on the same side as the gear (23). A slide rod (4) is vertically penetrating the surface of the protrusion (12). The slide rod (4) is placed behind the gear (23). The slide rod (4) has evenly spaced tooth grooves (41) on its surface. The tooth grooves (41) are adapted to the gear (23). A float body (5) is installed at the bottom of the slide rod (4).

2. The float gate according to claim 1, characterized in that: The bottom of the slide rod (4) is fixed with an installation rod (43), and limit bolts (42) are symmetrically arranged on both sides of the surface of the slide rod (4), with both limit bolts (42) positioned above the protrusion (12).

3. The pontoon flapping gate according to claim 2, characterized in that: The docking cylinder (51) is vertically fixed at the center of the upper surface of the pontoon body (5), and the bottom of the mounting rod (43) is installed inside the docking cylinder (51) by bolts.

4. The float gate according to claim 1, characterized in that: The rotating shaft (2) is coaxially provided with a second extension rod (24) on the side opposite to the first extension rod (22). A swing rod (25) is vertically provided at the end of the second extension rod (24). The swing rod (25) is distributed at 180 degrees with the fixed rod (21).

5. The pontoon flapping gate according to claim 4, characterized in that: The swing rod (25) has a limit plate (26) on its surface, a counterweight (27) is mounted on its surface, and a locking nut (28) is screwed onto the end of the swing rod (25). The counterweight (27) is placed between the limit plate (26) and the locking nut (28).

6. The pontoon flapping gate according to claim 1, characterized in that: The door panel (3) is provided with reinforcing ribs (31) arranged in a cross pattern on its surface, and a sealing gasket (32) is installed on the inner surface of the door panel (3).

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