Device for automatically controlling opening and closing of flap valve according to water level of drainage side
By designing a device including a tie rod assembly, a float and a spring, the door opening and closing is automatically controlled by the water level change on the drain side, the problems of lax closing and poor water flow in an environment with large water level fluctuations are solved, and the automatic control of the door and the efficient operation of the drainage system are achieved.
Patent Information
- Application Number
- CN202421344652.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-13
- Publication Date
- 2025-05-23
- Estimated Expiration
- 2034-06-13
AI Technical Summary
Traditional knock-on doors are not closed tightly in environments with large water fluctuations, resulting in water flow countercurrent or leakage, and the water flow is not smooth after opening, affecting the efficiency of the drainage system.
A device including a tie rod assembly, a float and a spring is designed to automatically control the opening and closing of the gate through a water level change on the drain side. When the water level on the drainage side is low, the float sinks and pulls the pull rod assembly, and the gate is opened; when the water level is high, the float is subjected to buoyancy to offset its own weight, and the spring tension causes the gate to close.
The automatic opening and closing of the knock door is achieved, avoiding the problems of lax closing and too small passage after opening, ensuring smooth water flow and the efficiency of the drainage system.
Smart Images
Figure CN222893755U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the field of engineering technology, and particularly relates to a device for automatically controlling the opening and closing of a flap according to the water level on the drainage side. Background Art
[0002] As a one-way gate, the core function of the traditional flap is to ensure that water can flow in a predetermined direction, that is, from the water accumulation side to the drainage side, and the drainage side is usually the side where the river or drainage channel is located.
[0003] The flap mainly closes by its own weight, and the opening power completely depends on the water pressure on the water accumulation side. However, in terms of design and use, this traditional flap also exposes some inherent limitations. First, due to the lack of an additional power device, the opening and closing of the gate completely depend on the external water pressure and the gravity of the gate itself. When the water level on the water accumulation side changes, the closed state of the gate may be affected, resulting in incomplete closing. This is particularly obvious in an environment with large water level fluctuations, which may lead to the backflow or leakage of water. Second, when the flap is opened, due to the obstruction of its own structure, the water flow may be hindered to a certain extent when passing through, resulting in poor water flow. This situation is particularly prominent during the peak drainage period or when the water flow is rapid, which may affect the overall efficiency of the drainage system.
[0004] Therefore, there is an urgent need to develop a device that can automatically control the opening and closing of the flap according to the water level on the drainage side to meet the construction requirements, which has become a technical problem that needs to be solved by those skilled in the art. Content of the Utility Model
[0005] Aiming at the problems existing in the prior art, the utility model provides a device for automatically controlling the opening and closing of a flap according to the water level on the drainage side, aiming to realize the automatic opening and closing of the flap and avoid the situations of incomplete closing of the flap and too small a passage after opening.
[0006] The utility model is realized as follows:
[0007] A device for automatically controlling the opening and closing of a flap according to the water level on the drainage side, the outside of the flap is the drainage side, the inside of the flap is the water accumulation side, and the water accumulates and flows from the water accumulation side to the drainage side through the opened gate; the device includes a pull rod assembly, a float and a spring; one end of the pull rod assembly away from the flap is fixedly connected to the float, and the other end is hinged to the lower end of the drainage side of the gate; the lower end of the water accumulation side of the gate is fixedly connected to the spring; when the water level on the drainage side is low, the acting force on the drainage side of the gate is greater than the acting force on the water accumulation side, and the gate opens; when the water level on the drainage side is high, the acting force on the drainage side of the gate is less than the acting force on the water accumulation side, and the gate closes.
[0008] As a preferred technical solution, structural concrete is provided on the drainage side of the gate, a support frame is provided on the structural concrete, and the middle part of the pull rod assembly is hinged to the support frame to achieve up and down reciprocating swing.
[0009] As a preferred technical solution, the support frame is arranged on a side of the upper end surface of the structural concrete away from the flap door, and the support frame is inclined toward the direction of the buoy.
[0010] As a preferred technical solution, the support frame has a certain height to ensure that the second pull rod does not collide with the structural concrete when swinging up and down.
[0011] As a preferred technical solution, the tie rod assembly includes a first tie rod, a second tie rod and a third tie rod; the two ends of the second tie rod of the middle hinged support frame are respectively hinged to one end of the first tie rod and the third tie rod; the other end of the first tie rod is hinged to the lower end of the drainage side of the gate, and the third tie rod is fixedly connected to the buoy to form a lever structure with the support frame as the fulcrum.
[0012] As a preferred technical solution, the first pull rod, the second pull rod and the third pull rod are made of steel plates with a thickness of 5 mm and a width of 80 mm.
[0013] As a preferred technical solution, a bracket is welded on the buoy, and the bracket is bolted to the third tie rod.
[0014] As a preferred technical solution, the buoy is a plastic cylinder filled with water.
[0015] As a preferred technical solution, one end of the spring away from the gate is fixed to a bottom plate embedded part of the flap door.
[0016] As a preferred technical solution, the spring is still in an extended state when the gate is fully closed, exerting a pulling force on the gate; the pulling force is greater than the sum of the pulling force of the first pull rod on the gate and the pressure of the accumulated water on the gate on the accumulated water side.
[0017] The utility model has the following advantages and technical effects:
[0018] The utility model discloses a device for automatically controlling the opening and closing of a flap gate according to the water level on the drainage side. After the water level on the drainage side is lowered, the float is not affected by the buoyancy, and the deadweight of the float and the water in the float pulls one end of the pull rod assembly to sink. The gate will automatically open to a certain angle due to the pulling force of the pull rod assembly, and the accumulated water on the accumulated water side can smoothly flow into the drainage side. When the water level on the drainage side rises, the buoyancy of the water on the float and the deadweight of the float and the water in the float offset each other, and there is not enough pulling force to overcome the pulling force of the spring. The flap gate will automatically close under the action of its own weight and the pulling force of the spring to avoid leakage. BRIEF DESCRIPTION OF THE DRAWINGS
[0019] Figure 1This is a cross-sectional view of the gate of the utility model when it is opened;
[0020] Figure 2 It is a cross-sectional view of the gate of the utility model when it is closed;
[0021] Figure 3 for Figure 2 Top view of the .
[0022] In the figure: 1. flap door; 11. gate; 2. tie rod assembly; 21. first tie rod; 22. second tie rod; 23. third tie rod; 3. buoy; 4. spring; 5. support frame; 6. concrete support; 7. structural concrete; 8. drainage trough. DETAILED DESCRIPTION
[0023] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail in combination with the embodiments below. It should be understood that the specific embodiments described here are only used to explain the utility model, and are not used to limit the utility model.
[0024] like Figure 1-3 As shown, the utility model discloses a device for automatically controlling the opening and closing of a flap gate according to the water level on the drainage side. The outer side of the flap gate 1 is the drainage side, and the inner side of the flap gate 1 is the water accumulation side. The accumulated water flows from the water accumulation side to the drainage side through the opened gate 11. The device comprises a pull rod assembly 2, a float 3 and a spring 4. One end of the pull rod assembly 2 away from the flap gate 1 is fixedly connected to the float 3, and the other end is hinged to the lower end of the gate 11 on the drainage side. The lower end of the gate 11 on the water accumulation side is fixedly connected to the spring 4.
[0025] When the water level on the drainage side is low, the force on the drainage side of gate 11 is greater than the force on the accumulated water side, and gate 11 is opened; when the water level on the drainage side is high, the force on the drainage side of gate 11 is less than the force on the accumulated water side, and gate 11 is closed.
[0026] Preferably, the flap door 1 adopts a rubber water seal. The material of the gate 11 is generally steel. When it is closed, there is still a gap and the ideal sealing effect cannot be achieved. The rubber water seal can effectively prevent leakage.
[0027] A concrete support 6 is pre-cast on the water-accumulating side of the flap gate 1 during construction, and a stainless steel embedded part is provided on the side of the concrete support 6 facing the spring 4; one end of the spring 4 away from the gate 11 is fixed to the stainless steel embedded part, and the other end is connected to the lower end of the gate 11 on the water-accumulating side.
[0028] Preferably, the spring 4 is still in an extended state when the gate 11 is fully closed, exerting a pulling force on the gate 11, thereby ensuring that the gate 11 has better sealing performance when in a closed state.
[0029] Further preferably, the elastic coefficient of the spring 4 is determined according to the pressure of the water accumulation side on the gate 11 when the gate 11 is closed, ensuring that the pulling force of the spring 4 on the gate 11 is greater than the sum of the pressure of the water accumulation side on the gate 11 and the pulling force of the pull rod assembly 2 on the gate 11, thereby ensuring the sealing of the gate 11 when it is closed.
[0030] Preferably, two springs 4 are installed below the water accumulation side of the gate 11, which increases the pulling force of the spring 4 on the gate 11 when the gate 11 is closed, ensures better sealing when the gate 11 is closed, and avoids water leakage.
[0031] The tie rod assembly 2 includes a first tie rod 21, a second tie rod 22 and a third tie rod 23; the two ends of the second tie rod 22 of the middle hinged support frame 5 are hinged to one end of the first tie rod 21 and the third tie rod 23 respectively; the other end of the first tie rod 21 is hinged to the lower end of the drainage side of the gate 11, and the third tie rod 23 is fixedly connected to the buoy 3, forming a lever structure with the support frame 5 as the fulcrum.
[0032] The drainage side of the gate 11 is provided with a raised structural concrete 7, a support frame 5 is provided on the structural concrete 7, and the middle part of the second tie rod 22 is hinged to the support frame 5 to achieve up and down reciprocating swing. The buoy 3 transmits its own gravity to the first tie rod 21 through the second tie rod 22 and converts it into a pulling force of the first tie rod 21 on the gate 11, so as to facilitate the opening of the gate 11.
[0033] A drainage ditch 8 is provided between the structural concrete 7 and the gate 1, and the accumulated water on the water accumulation side flows into the drainage ditch through the gate 11.
[0034] Preferably, the support frame 5 is arranged on a side of the upper end surface of the structural concrete 7 away from the flap door 1, and the support frame 5 is inclined toward the direction where the buoy 3 is located.
[0035] Preferably, the support frame 5 has a certain height to ensure that the second pull rod 22 does not collide with the structural concrete 7 when swinging up and down.
[0036] Further preferably, the support frame 5 is made of steel to improve the stability of the lever structure and reduce the number of replacements due to damage.
[0037] Preferably, the buoy 3 is a cylinder with an outer diameter of 47 cm and a height of 85 cm. A bracket is welded on the horizontally placed buoy 3 , and the bracket is bolted to the third tie rod 23 .
[0038] Further preferably, the buoy 3 is a plastic cylinder filled with water, which weighs about 120 kg after being filled with water; the buoy 3 filled with water increases its own gravity, ensuring that the buoy 3 can give sufficient pulling force to the gate 11 when the water level on the drainage side drops, and at the same time offset the reverse pulling force generated by the spring 4 when the gate 11 is opened, so that the gate 11 can be opened at a larger angle to ensure smooth drainage.
[0039] The first tie rod 21, the second tie rod 22 and the third tie rod 23 are made of galvanized steel plates with a thickness of 5 mm and a width of 80 mm, which enhances the corrosion resistance and increases the service life of the steel plates, thereby reducing labor and production costs.
[0040] Preferably, two sets of tie rod assemblies 2 and buoys 3 are provided on the drainage side of the gate 11 to increase the amplitude of the gate 11 when it is opened and improve the drainage efficiency.
[0041] The flap door 1 described in the present invention is a conventional flap door 1 commonly seen in the market, and the specific structure will not be described in detail.
[0042] Working principle:
[0043] After the water level on the drainage side is lowered, the buoyancy of the buoy 3 is not affected by buoyancy or is affected by a smaller buoyancy. The buoy 3 filled with water sinks due to gravity and converts the gravity into a pulling force on the gate 11 through the tie rod assembly 2. The gate 11 is subjected to the pulling force of the tie rod assembly 2 and the pressure on the water accumulation side. At this time, the sum of the two forces is greater than the sum of the pulling force of the spring 4 on the gate 11 and the dead weight of the gate 11. The gate 11 will automatically open to a certain angle. At this time, the accumulated water on the water accumulation side can flow smoothly into the drainage side; when the water level on the drainage side rises to the closing water level, the buoy 3 is subjected to the buoyancy of the water, and the buoyancy offsets most of the gravity of the buoy 3 and the water in the cylinder. At this time, the sum of the pulling force of the tie rod assembly 2 on the gate 11 and the pressure on the water accumulation side is less than the sum of the pulling force of the spring 4 on the gate 11 and the dead weight of the gate 11. The gate 11 will automatically close under the force to avoid leakage, thereby preventing the accumulated water on the drainage side from flowing back into the water accumulation side. The utility model realizes automatic opening and closing of the flap door 1 according to the height of the water level on the drainage side.
[0044] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.
Claims
1. A device for automatically controlling the opening and closing of a flap door according to the water level on the drainage side, wherein the outer side of the flap door (1) is the drainage side, and the inner side of the flap door (1) is the water accumulation side, and the accumulated water flows from the water accumulation side to the drainage side through the opened gate (11); characterized in that: The device comprises a pull rod assembly (2), a float (3) and a spring (4); one end of the pull rod assembly (2) away from the flap gate (1) is fixedly connected to the float (3), and the other end is hinged to the lower end of the drainage side of the gate (11); the lower end of the water accumulation side of the gate (11) is fixedly connected to the spring (4); When the water level on the drainage side is low, the force acting on the drainage side of the gate (11) is greater than the force acting on the water accumulation side, and the gate (11) is opened; when the water level on the drainage side is high, the force acting on the drainage side of the gate (11) is less than the force acting on the water accumulation side, and the gate (11) is closed.
2. The device for automatically controlling the opening and closing of a flap door according to the water level on the drainage side as claimed in claim 1, characterized in that: The drainage side of the gate (11) is provided with structural concrete (7), a support frame (5) is arranged on the structural concrete (7), and the middle part of the pull rod assembly (2) is hinged to the support frame (5) to achieve up and down reciprocating swing.
3. The device for automatically controlling the opening and closing of a flap door according to the water level on the drainage side as claimed in claim 2, characterized in that: The support frame (5) is arranged on a side of the upper end surface of the structural concrete (7) away from the flap door (1), and the support frame (5) is inclined in the direction of the buoy (3).
4. The device for automatically controlling the opening and closing of a flap door according to the water level on the drainage side as claimed in claim 3, characterized in that: The height of the support frame (5) is determined to ensure that the second pull rod (22) does not collide with the structural concrete (7) when swinging up and down.
5. The device for automatically controlling the opening and closing of a flap door according to the water level on the drainage side as claimed in claim 2, characterized in that: The tie rod assembly (2) comprises a first tie rod (21), a second tie rod (22) and a third tie rod (23); the two ends of the second tie rod (22) of the middle hinged support frame (5) are hinged to one end of the first tie rod (21) and one end of the third tie rod (23) respectively; the other end of the first tie rod (21) is hinged to the lower end of the drainage side of the gate (11), and the third tie rod (23) is fixedly connected to the buoy (3), forming a lever structure with the support frame (5) as a fulcrum.
6. The device for automatically controlling the opening and closing of a flap door according to the water level on the drainage side as claimed in claim 5, characterized in that: The first pull rod (21), the second pull rod (22) and the third pull rod (23) are made of steel plates with a thickness of 5 mm and a width of 80 mm.
7. The device for automatically controlling the opening and closing of a flap door according to the water level on the drainage side as claimed in claim 5, characterized in that: A bracket is welded on the buoy (3), and the bracket is bolted to the third tie rod (23).
8. The device for automatically controlling the opening and closing of a flap door according to the water level on the drainage side as claimed in claim 7, characterized in that: The buoy (3) is a plastic cylinder filled with water.
9. The device for automatically controlling the opening and closing of a flap door according to the water level on the drainage side as claimed in claim 1, characterized in that: One end of the spring (4) away from the gate (11) is fixed on a bottom plate embedded part of the flap door (1).
10. The device for automatically controlling the opening and closing of a flap door according to the water level on the drainage side as claimed in claim 9, characterized in that: The spring (4) is still in an extended state when the gate (11) is fully closed, exerting a pulling force on the gate (11); the pulling force is greater than the sum of the pulling force of the first pull rod (21) on the gate (11) and the pressure of the accumulated water on the gate (11) on the accumulated water side.