A simple flap gate with a tiltable movable inlet

Abstract

This utility model discloses a simple, tiltable flap gate with a movable pipe opening, relating to the field of valve technology. The utility model includes a drain pipe with a base mounted on its surface and a door cover on one side of the drain pipe. A reset assembly is located on one side of the base, comprising fixed pulleys on the front and rear sides of the base and a steel cable sleeved on the surface of the fixed pulleys. Through the mechanical linkage design of the reset assembly, this utility model achieves an automatic reset function without external power. A counterweight is connected to the door cover via the steel cable; when the water pressure decreases, the weight of the counterweight can quickly pull the door cover closed, avoiding the failure risk of traditional electric or hydraulic flap gates due to power outages or malfunctions. The door cover adopts a structure connecting a pivot to a bracket, allowing it to rotate flexibly in a tilted state to adapt to different drainage angles, especially suitable for scenarios where the drain outlet angle changes frequently, significantly improving applicability and reliability.

Description

Technical Field

[0001] This utility model belongs to the field of valve technology, and in particular relates to a simple flap gate with an tiltable movable pipe opening. Background Technology

[0002] A flap valve is a crucial backflow preventer used to prevent water backflow or foreign objects from entering a pipe. It is typically installed at the end of a drainage pipe. Based on their opening and closing mechanism, flap valves can be broadly classified into two categories: self-closing and externally-force-dependent closing types. Self-closing flap valves use the weight of the valve cover itself as the closing force, quickly resetting and closing when no external force is applied, effectively preventing water backflow at the pipe opening. Simultaneously, their ingenious structural design utilizes the impact force of water flow as the drainage force, achieving efficient drainage while ensuring a tight seal, thus offering advantages in both safety and economy.

[0003] Currently, the mainstream flap gates on the market that rely on external force for opening and closing mainly use hydraulic and electric control systems. Although these flap gates can achieve precise opening and closing control, they have obvious application defects. The system depends on electric or hydraulic energy for driving. When encountering a sudden power outage, circuit failure, or hydraulic oil leakage, the flap gate may not be able to close in time due to the loss of power source. Moreover, the mechanical structure is highly complex, and key components such as valve cores and pistons are prone to jamming or wear during long-term operation. Once a valve core is blocked by impurities or jammed due to mechanical failure, the entire system will lose its responsiveness.

[0004] To address these issues, we provide a simple, tiltable flap gate with an adjustable opening. Utility Model Content

[0005] The purpose of this utility model is to provide a simple flap gate with an adjustable movable opening. By setting up a reset component, it solves the problem that in the prior art, flap gates mainly use hydraulic systems and electric control, and when encountering sudden power outages, circuit failures, or hydraulic oil leaks, the flap gate may not be able to close in time due to the loss of power source.

[0006] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution.

[0007] This utility model is a simple flap door with an adjustable movable pipe opening, including a drain pipe, a base installed on the surface of the drain pipe, and a door cover on one side of the drain pipe; a reset assembly is provided on one side of the base, the reset assembly includes fixed pulleys disposed on the front and rear sides of the base, a steel cable sleeved on the surface of the fixed pulleys, and a counterweight block installed at one end of the steel cable.

[0008] The present invention is further configured such that the other end of the steel cable is fixedly connected to the door cover, and a sealing gasket is installed on one side of the door cover.

[0009] The present invention is further configured such that a fixed shaft is movably connected inside the fixed pulley, and one side of the fixed shaft is fixedly connected to the base.

[0010] The present invention is further configured such that a sliding cylinder is slidably connected to the surface of the counterweight, and one side of the sliding cylinder is fixedly connected to the base.

[0011] The present invention is further configured such that a rotating shaft is fixedly connected to the top of the door cover, a bracket is movably connected to the surface of the rotating shaft, and one side of the bracket is fixedly connected to the base.

[0012] The present invention is further configured such that the counterweight is a metal block with a regular and flat shape, and the weight of the counterweight is adjusted according to the weight of the door cover and the water pressure required for sealing and water retention.

[0013] The present invention is further configured such that the door cover is in the shape of a flat plate or a hemispherical shape to adapt to different pipe sealing requirements.

[0014] The present invention has the following beneficial effects.

[0015] 1. This utility model achieves an automatic reset function without external energy drive through the mechanical linkage design of the reset component. The counterweight is connected to the door cover by a steel cable. After the water pressure decreases, the weight of the counterweight can quickly pull the door cover to close, avoiding the failure risk of traditional electric or hydraulic flap doors due to power failure or malfunction. The door cover adopts a structure that connects the pivot to the bracket, allowing it to rotate flexibly in an inclined state to adapt to the needs of different drainage angles. It is especially suitable for scenarios where the angle of the drain outlet changes frequently, significantly improving applicability and reliability.

[0016] 2. This utility model, through the adjustable counterweight and sliding cylinder design, can flexibly adapt to the needs of different water pressures and door cover weights. The counterweight is made of regular metal blocks or closed containers (such as sand buckets or water buckets), and its weight can be adjusted according to actual working conditions to ensure that the door cover can achieve precise sealing under different pressures. At the same time, the door cover shape supports various forms such as flat or hemispherical, which can match the sealing requirements of different pipes and enhance versatility. The vertical fixing design of the sliding cylinder further optimizes the movement trajectory of the counterweight and reduces friction loss.

[0017] Of course, any product implementing this utility model does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below.

[0019] Figure 1 A three-dimensional diagram of a simple flap gate with a tiltable movable opening.

[0020] Figure 2 This is a schematic diagram of the closed state of a simple flap gate with an adjustable movable opening.

[0021] Figure 3 This is a schematic diagram of the open state of a simple flap gate with a tiltable movable opening.

[0022] In the attached diagram: 1. Drain pipe; 2. Base; 3. Door cover; 4. Reset assembly; 401. Fixed pulley; 402. Steel cable; 403. Counterweight; 5. Fixed shaft; 6. Slide cylinder; 7. Rotating shaft; 8. Support. Detailed Implementation

[0023] The technical solutions of the present utility model will be described below with reference to the accompanying drawings. The described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0024] Example 1

[0025] Please see Figures 1-3 This utility model is a simple, tiltable, movable flap door for drain pipes, comprising a drain pipe 1, a base 2 mounted on the surface of the drain pipe 1, and the base 2 being fixed to the drain pipe 1 opening by means of flange, direct welding, or clamp. A door cover 3 is provided on one side of the drain pipe 1; the top of the door cover 3 is connected to the base 2 via a fixed shaft 5 and a bracket 8. The contact surfaces of the door cover 3 and the base 2 can be tightly joined. Flexible materials such as rubber pads and inflatable rubber rings are used to achieve a seal and reduce the impact force and noise between the door cover 3 and the base 2, thereby improving the overall service life. The door cover 3 can take various shapes, such as... The base 2 has a flat, hemispherical, or other curved surface. A reset component 4 is provided on one side of the base 2. The reset component 4 includes a fixed pulley 401 located on the front and rear sides of the base 2, a steel cable 402 sleeved on the surface of the fixed pulley 401, and a counterweight 403 installed at one end of the steel cable 402. The weight of the counterweight 403 is adjusted according to the weight of the door cover 3 and the water pressure that needs to be sealed and retained. The counterweight 403 can be made of various regular and flat metal blocks, stones, or other high-density items, or closed containers such as sand buckets or water buckets can be used to facilitate the adjustment of the weight of the counterweight 403.

[0026] Example 2

[0027] Please see Figures 1-3Based on Example 1, the other end of the steel cable 402 is fixedly connected to the door cover 3. A sealing gasket is installed on one side of the door cover 3. A fixed shaft 5 is movably connected inside the fixed pulley 401. One side of the fixed shaft 5 is fixedly connected to the base 2. A sliding cylinder 6 is slidably connected to the surface of the counterweight 403. The size of the sliding cylinder 6 is adjusted according to the outer dimensions and stroke length of the counterweight 403. Its inner diameter is larger than the outer diameter of the counterweight 403. The top and bottom are hollowed out to facilitate the removal of the counterweight 403. One side of the sliding cylinder 6 is fixedly connected to the base 2. A rotating shaft 7 is fixedly connected to the top of the door cover 3. A bracket 8 is movably connected to the surface of the rotating shaft 7. One side of the bracket 8 is fixedly connected to the base 2. The counterweight 403 is a metal block with a regular and flat shape. The weight of the counterweight 403 is adjusted according to the weight of the door cover 3 and the water pressure that needs to be sealed and retained. The door cover 3 is flat or hemispherical in shape to adapt to different pipe sealing requirements.

[0028] The working principle of this utility model is as follows: A cover 3 with the same inner diameter as the drain pipe 1 is used, and the cover 3 is installed at the opening of the drain pipe 1 through the base 2. Then, the weight of the counterweight 403 is adjusted to match that of the cover 3. Then, the angle of the slide cylinder 6 is adjusted so that the slide cylinder 6 is fixed in a vertical state. When there is water in the pipe and a certain pressure is reached, the water pressure pushes open the sealing cover 3 to drain the water. When the cover 3 rotates around the fixed shaft 5, it pulls the steel cable 402. The steel cable 402 pulls the counterweight 403 upward. When the water pressure decreases, the counterweight 403 returns the steel cable 402 to its original position. The cover 3 seals the pipe opening by means of the tension and its own weight, thus achieving backflow prevention, water retention, and external protection. For purposes such as preventing foreign objects from entering, when used in temporary drainage systems in low-lying areas where the pump outlet does not have a check valve, it can slow down the backflow of water in the pump inlet riser, keeping the water from the highest point of the pipe to the drain outlet inside the pipe and preventing it from flowing back into the well. This reduces the risk of the pump restarting due to a sudden rise in the liquid level in low-lying areas. When a large-diameter gravity flow pipe enters a drop well or energy dissipation well, the cover 3 can change the direction of water flow and reduce the impact of water flow on the well wall, extending the service life of the well body. It is particularly suitable for drop wells and drain outlets of large-diameter gravity flow water supply pipelines, and also suitable for flexible or rigid pipes with inclined drain outlets or drain outlets with frequently changing inclination angles for daily small-diameter drainage.

[0029] The foregoing description only illustrates certain exemplary embodiments of the present invention. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A simple flap gate with an adjustable movable pipe opening, comprising a drain pipe (1), characterized in that: A base (2) is installed on the surface of the drain pipe (1), and a door cover (3) is provided on one side of the drain pipe (1); A reset assembly (4) is provided on one side of the base (2). The reset assembly (4) includes a fixed pulley (401) disposed on the front and rear sides of the base (2), a steel cable (402) sleeved on the surface of the fixed pulley (401), and a counterweight (403) installed at one end of the steel cable (402).

2. A simple flap gate with an adjustable movable pipe opening as described in claim 1, characterized in that: The other end of the steel cable (402) is fixedly connected to the door cover (3), and a sealing gasket is installed on one side of the door cover (3).

3. A simple flap gate with an adjustable movable pipe opening as described in claim 1, characterized in that: The fixed pulley (401) is movably connected to a fixed shaft (5), and one side of the fixed shaft (5) is fixedly connected to the base (2).

4. A simple flap gate with an adjustable movable pipe opening as described in claim 1, characterized in that: The counterweight (403) has a sliding cylinder (6) slidably connected to its surface, and one side of the sliding cylinder (6) is fixedly connected to the base (2).

5. A simple flap gate with an adjustable movable pipe opening according to claim 1, characterized in that: The top of the door cover (3) is fixedly connected to a rotating shaft (7), and a bracket (8) is movably connected to the surface of the rotating shaft (7). One side of the bracket (8) is fixedly connected to the base (2).

6. A simple flap gate with an adjustable movable pipe opening according to claim 1, characterized in that: The counterweight (403) is a regular and flat metal block. The weight of the counterweight (403) is adjusted according to the weight of the door cover (3) and the water pressure that needs to be sealed and retained.

7. A simple flap gate with an adjustable movable pipe opening according to claim 1, characterized in that: The cover (3) has a flat and hemispherical shape to adapt to different pipe sealing requirements.

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