Large-flow float valve capable of being opened and closed at one time

Abstract

The invention provides a large-flow one-time opening and closing floating ball valve which comprises a valve body, a valve element, a lever, a floating ball assembly and a first balance weight part, and in the process that the valve element is switched from an opening state to a closing state, the first balance weight part moves from the first end of the lever to the second end and is away from the floating ball assembly at the same time, so that the torque of the closing side is remarkably increased; quick one-time closing is realized; due to the fact that the floating ball rod can freely move up and down in the positioning hole, when the floating ball valve is about to be closed, the opening side torque applied by the floating ball to the lever is very small or even does not exist, the lever can rapidly rotate towards the closing side under the gravity action of the first balance weight piece and the second balance weight piece, and rapid one-time closing of the floating ball valve is achieved. And after the floating ball valve is closed, the up-and-down movement of the floating ball caused by the fluctuation of the water surface is only consumed in the idle stroke of the floating ball rod and the positioning hole and is not directly and completely transmitted to the lever, so that the opening and closing of the valve core caused by the fluctuation of the water surface are avoided, and the service life of the floating ball valve and the service life of the water pump are further prolonged.

Description

Technical Field

[0001] This invention relates to the field of float valve technology, and more specifically to a float valve that can be opened and closed in a single operation with a large flow rate. Background Technology

[0002] Float valves are commonly used for water level control in water towers, maintaining the water level at a set height. When water usage causes the water level to drop to the preset low level, the float falls, opening the valve core and allowing water to flow into the tower. When the water level rises to the set high level, the float rises, closing the valve core and stopping the water supply. However, in practice, it has been found that when the water level approaches the closed position, the injected water flow causes strong fluctuations on the surface, resulting in the float continuously bobbing up and down, with fluctuations typically reaching 8–15 centimeters. This frequent fluctuation drives the valve core to repeatedly open and close, severely shortening the lifespan of the float valve and related water pumps. Summary of the Invention

[0003] Therefore, the technical problem to be solved by the present invention is to overcome the defects in the prior art, thereby providing a large-flow one-time opening and closing float valve with long service life and good sealing performance.

[0004] Therefore, the present invention provides a large-flow-rate float valve that can be opened and closed in one go, comprising a valve body, a lever float assembly, and a first counterweight. The valve body is provided with a valve core; a lever is oscillatingly mounted on the valve body, and a float assembly is provided at its first end. When the float assembly rises or falls, it drives the valve core to close or open through the lever; at least one first counterweight is movably mounted on the lever; wherein, when the valve core is in the open state, the first counterweight is disposed adjacent to the first end; during the process of the valve core switching from the open state to the closed state, the first counterweight moves from the first end of the lever to the second end while moving away from the float assembly.

[0005] The lever is a hollow tube sealed at both ends, and the first counterweight is installed inside the hollow tube.

[0006] The first counterweight is a ball bearing that is rolled inside the hollow tube.

[0007] The second end is fixed with a second counterweight.

[0008] The lever has a first positioning block at its first end, and the first positioning block has a positioning hole. The float assembly includes a first float and a float rod. The float rod is fixed to the top of the first float and passes through the positioning hole and can move along the positioning hole.

[0009] The top of the float rod is provided with a second positioning block that can abut against the top surface of the first positioning block.

[0010] The float assembly further includes a second float, which is connected to the bottom of the first float via an adjusting rope.

[0011] The second float is a counterweight float.

[0012] The valve body is fixedly provided with a stationary valve plate and a moving valve plate that is driven by the valve core and rotates relative to the stationary valve plate. The stationary valve plate is provided with a water outlet hole, and the moving valve plate is provided with a water outlet. When the valve core is in the open state, the water outlet is correspondingly arranged with the water outlet hole; when the valve core is in the closed state, the water outlet is offset from the water outlet hole.

[0013] The movable valve plate has a fan-shaped groove formed on it, and the end of the valve core is provided with a valve core shaft head that can be inserted into and move within the fan-shaped groove. When the valve core is in the open state, the valve core shaft head abuts against the inner wall of one side of the fan-shaped groove. During the switching process between the open and closed states of the valve core, the valve core shaft head moves within the fan-shaped groove, while the movable valve plate remains stationary. When the valve core is in the closed state, the valve core shaft head abuts against the inner wall of the other side of the fan-shaped groove.

[0014] The technical solution of this invention has the following advantages:

[0015] 1. The high-flow-rate, one-time opening and closing float valve provided by this invention includes a valve body, a valve core, a lever, a float assembly, and a first counterweight. When the valve core is in the open state, the first counterweight is positioned adjacent to the first end. During the process of the valve core switching from the open state to the closed state, the first counterweight moves from the first end of the lever to the second end while moving away from the float assembly. This significantly increases the torque on the closing side, achieving rapid one-time closing and avoiding high-frequency, small-amplitude opening and closing of the valve core due to water surface fluctuations. This extends the service life of the float valve and the water pump, achieves high-flow-rate water supply, can withstand the standard requirements of the maximum inlet pressure of tap water, has good sealing effect, saves water resources, and provides high-quality float valve products for fire protection, industrial, agricultural, and civil applications, energy storage towers and water tanks, and automated intelligent control of water pumps.

[0016] 2. The large-flow float valve provided by the present invention has a lever that is a hollow tube sealed at both ends. The first counterweight is installed inside the hollow tube. The hollow tube provides a built-in, closed and reliable moving track for the first counterweight, avoiding interference from external components and rusting caused by moisture, and has good protective performance.

[0017] 3. The large-flow float valve provided by the present invention opens and closes at one time, using a ball as the first counterweight. The rolling friction is much less than the sliding friction, which makes the counterweight move extremely smoothly and quickly within the lever.

[0018] 4. The large-flow one-time opening and closing float valve provided by the present invention has a second counterweight fixedly set at the second end of the lever. By adjusting the weight of the second counterweight, the required buoyancy of the float end to open the action can be precisely set. In addition, the first counterweight and the second float work together to make the float valve operate more stably and reliably under different working conditions.

[0019] 5. The large-flow-rate, one-time opening and closing float valve provided by this invention allows the float rod to move freely up and down in the positioning hole. When the float valve is about to close, the torque exerted by the float on the lever on the opening side is very small or even non-existent. This allows the lever to quickly rotate towards the closing side under the gravity of the first and second counterweights, achieving rapid one-time closing of the float valve. In addition, after the float valve closes, the up-and-down movement (8-15cm) of the float caused by water surface fluctuations is only consumed within the idle stroke of the float rod and the positioning hole, and is not directly and completely transmitted to the lever. This avoids valve core opening and closing caused by water surface fluctuations, further extending the service life of the float valve and the water pump.

[0020] 6. The large-flow one-time opening and closing float valve provided by the present invention has a second float connected to the first float via an adjusting rope. By adjusting the rope length, the depth at which the first float begins to function (i.e., the closing water level) can be flexibly set, increasing the applicability of the product.

[0021] 7. The large-flow float valve that can be opened and closed at one time provided by the present invention has a fan-shaped groove formed on the moving valve plate, and a valve core shaft head that can be inserted into and move within the fan-shaped groove at the end of the valve core. During the switching between the open and closed states of the valve core, the valve core shaft head moves within the fan-shaped groove, while the moving valve plate remains stationary. When the lever is slightly oscillating due to the fluctuation of the float, the valve core shaft head only moves within the gap of the fan-shaped groove (empty stroke) and does not drive the moving valve plate to rotate. This means that the high-frequency small fluctuations on the water surface are absorbed by this empty stroke and will not be converted into the action of the moving valve plate, thereby completely avoiding the frequent opening and closing of the float valve. Attached Figure Description

[0022] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0023] Figure 1 This is a schematic diagram of the float valve of the present invention in the open state; Figure 2 This is a schematic diagram of a float valve with its valve core in the open position. Figure 3 This is a schematic diagram of a float valve in the state of being about to close. Figure 4 This is a schematic diagram showing the valve core of a float valve in a state where it is about to close. Figure 5 for Figure 3 A partially enlarged structural diagram; Figure 6 A schematic diagram of the float valve in the closed state; Figure 7 This is a schematic diagram of a float valve with its valve core in the closed state. Figure 8 This is a schematic diagram of the float valve in the closed state (when the water level drops); Figure 9 This is a schematic diagram of a float valve in the state of being about to open. Figure 10 This is a schematic diagram showing the valve core of a float valve in the state of being about to open. Figure 11 This is a schematic diagram showing the disassembly of the moving valve plate, stationary valve plate, and valve core; Figure 12 This is a partial structural diagram of the valve body; Figure 13 This is a schematic diagram showing the fit between the valve core and the lever bracket; Figure 14 This is a schematic diagram of the valve body installed inside the housing. Figure 15 This is a schematic diagram showing the structure in which part of the valve body is installed outside the housing.

[0024] Explanation of reference numerals in the attached drawings: 1. Valve body; 2. Valve core; 3. Lever; 4. First end; 5. Float assembly; 6. First counterweight; 7. Second end; 8. Second counterweight; 9. First positioning block; 10. Positioning hole; 11. First float; 12. Second float; 13. Float rod; 14. Second positioning block; 15. Static valve plate; 16. Moving valve plate; 17. Water outlet; 18. Water outlet; 19. Sector groove; 20. Valve core shaft head; 21. Adjusting rope; 22. Lever bracket; 23. First toothed part; 24. Second toothed part; 25. Housing. Detailed Implementation

[0025] The technical solution of the present invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0026] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0027] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; 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; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0028] Furthermore, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0029] Example This embodiment provides a float valve that can be opened and closed in a single operation with a large flow rate, such as... Figure 1 As shown, it includes valve body 1, valve core 2, lever 3, float assembly 5 and first counterweight 6.

[0030] Valve body 1, provided with valve core 2, stationary valve plate 15 and moving valve plate 16, such as Figure 10 and Figure 11 As shown, the stationary valve plate 15 is provided with a water outlet 17, and the moving valve plate 16 is provided with a water outlet 18. When the valve core 2 is in the open state, as... Figure 2 As shown, the water outlet 18 is correspondingly arranged with the water outlet hole 17; when the valve core 2 is in the closed state, as Figure 7 As shown, the water outlet 18 and the water outlet hole 17 are offset. A fan-shaped groove 19 is formed on the moving valve plate 16, and the end of the valve core 2 is provided with a valve core shaft head 20 that inserts into and can move within the fan-shaped groove 19. The valve core shaft head 20 rotates relative to the stationary valve plate 15 via the moving valve plate 16; wherein, the valve core 2 is positioned as follows... Figure 2 When in the open state as shown, the valve core shaft head 20 abuts against one side of the inner wall of the sector groove 19; the valve core 2, as shown... Figure 4 During the switching process between the open and closed states shown, the valve core shaft 20 moves within the sector groove 19, while the movable valve plate 16 remains stationary; the valve core 2 is in the position shown... Figure 7 In the closed state shown, the valve core shaft head 20 abuts against the inner wall of the other side of the sector groove 19. It should be noted that, as... Figure 14 and Figure 15 As shown, valve body 1 can be installed inside the housing or outside the housing.

[0031] Float assembly 5, such as Figure 1 As shown, it includes a first float 11 and a second float 12. The top of the first float 11 is provided with a float rod 13. The second float 12 is connected to the bottom of the first float 11 by an adjusting rope 21. In this embodiment, the second float 12 is a counterweight float, that is, sand can be added to the second float 12 to adjust the weight.

[0032] Lever 3 is oscillatingly mounted on the valve body 1, as follows: Figure 1 As shown, a first positioning block 9 is provided at the first end 4, and a second counterweight 8 is fixed at the second end 7, as follows. Figure 5 As shown, the first positioning block 9 has a positioning hole 10, through which the float rod 13 passes and can move freely up and down. The top of the float rod 13 is provided with a second positioning block 14 that abuts against the top surface of the first positioning block 9. The second counterweight 8 is fixed to the lever 3 by welding. For those skilled in the art, the weight of the second counterweight 8 can be flexibly adjusted according to actual needs. When the float assembly 5 rises or falls, it drives the valve core 2 to close or open via the lever 3. In this embodiment, the lever 3 is a hollow tube with welded and sealed ends, and the first counterweight 6 is installed inside the hollow tube. It should be noted that a lever support 22 is provided in the middle of the lever 3, such as... Figure 12 and Figure 13 As shown, the lever bracket 22 has a through hole, and the inner wall of the through hole has a first toothed part 23. The valve core 2 has a second toothed part 24 that is inserted into the through hole and fits with the first toothed part 23. During assembly, the valve core 2 is inserted into the through hole of the lever bracket 22. By the toothed fit of the first toothed part 23 and the second toothed part 24, the relative fitting angle between the lever bracket 22 and the valve core 2 can be adjusted, thereby realizing the adjustment of different opening and closing angles of the valve core.

[0033] Three first counterweights 6 are movably mounted on the lever 3, wherein the valve core 2 is positioned as follows: Figure 1 In the open state, the first counterweight 6 is positioned adjacent to the first end 4. During the process of the valve core 2 switching from the open state to the closed state, the first counterweight 6 moves from the first end 4 of the lever 3 to the second end 7 while moving away from the float assembly 5. In this embodiment, the first counterweight 6 is a ball bearing that is rolled and installed inside the hollow tube. The number of first counterweights 6 can be one, two, three, or more, and can be flexibly selected according to actual needs.

[0034] As an alternative implementation, the first counterweight 6 can be a slider that slides inside a hollow tube sealed at both ends, and the lever 3 can also be provided with a slide rail that cooperates with the slider.

[0035] The working principle of the float valve of the present invention is as follows: like Figure 1 As shown, the float valve is in the open state, lever 3 is tilted downwards to the left, and the first counterweight 6 is located to the left of lever 3 (close to the float assembly 5). At this time, as... Figure 2 As shown, the valve core shaft head 20 of the valve core 2 abuts against the inner wall of one side of the fan-shaped groove 19 of the moving valve plate 16; like Figure 3 As shown, when the water level in the tank rises to the point where the first float 11 rests on the first positioning block 9, and the lever 3 rotates clockwise to a horizontal position, as... Figure 4 As shown, the valve core shaft 20 of valve core 2 moves to the middle of the sector groove 19. At this time, the moving valve plate 16 remains stationary, and the float valve continues to supply water normally. When the water level in the tank continues to rise, the three first counterweights 6 move simultaneously toward the second counterweight 8. The weight of the first counterweights 6 combined with the weight of the second counterweight 8 causes the lever 3 to rotate rapidly in a clockwise direction (tilting downward to the right). Figure 7 As shown, the valve core shaft head 20 abuts against the inner wall of the other side of the sector groove 19, thereby closing the movable valve plate 16 (as shown). Figure 6 (as shown) like Figure 8 As shown, when the water level in the tank drops, the float rod 13 slides downward relative to the first positioning block 9, and with the second positioning block 14 fixed, the first float 11 hangs on the first positioning block 9; when the water level continues to drop, the lever 3 rotates counterclockwise under the gravity of the second float 12 until it reaches the desired position. Figure 9 In the horizontal state shown, as Figure 10 As shown, the valve core shaft 20 of the valve core 2 moves to the middle of the sector groove 19. At this time, the moving valve plate 16 remains stationary, and the float valve remains closed. When the water level continues to drop, the three first counterweights 6 move simultaneously toward the first positioning block 9. The weight of the three first counterweights 6 is superimposed on the weight of the two floats, causing the lever 3 to rotate rapidly in a counterclockwise direction (as shown). Figure 1 As shown, tilted to the lower left), as Figure 2 As shown, the valve core shaft head 20 abuts against the inner wall of one side of the sector groove 19, thereby opening the actuating valve plate 16 and starting the float valve to supply water.

[0036] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the scope of protection of this invention.

Claims

1. A high-flow-rate float valve that can be opened and closed in a single operation, characterized in that, include: The valve body (1) is provided with a valve core (2); The lever (3) is oscillatingly mounted on the valve body (1), and its first end (4) is provided with a float assembly (5). When the float assembly (5) rises or falls, it drives the valve core (2) to close or open through the lever (3). At least one first counterweight (6) is movably mounted on the lever (3); When the valve core (2) is in the open state, the first counterweight (6) is located near the first end (4); during the process of the valve core (2) switching from the open state to the closed state, the first counterweight (6) moves from the first end (4) of the lever (3) to the second end (7) and moves away from the float assembly (5).

2. The large-flow-rate, one-time opening and closing float valve according to claim 1, characterized in that, The lever (3) is a hollow tube sealed at both ends, and the first counterweight (6) is installed inside the hollow tube.

3. The large-flow-rate, one-time opening and closing float valve according to claim 2, characterized in that, The first counterweight (6) is a ball bearing that is rolled inside the hollow tube.

4. The large-flow-rate, one-time opening and closing float valve according to claim 1, characterized in that, The second end (7) is fixed with a second counterweight (8).

5. The large-flow-rate float valve that opens and closes simultaneously according to any one of claims 1-4, characterized in that, The lever (3) has a first positioning block (9) at its first end (4), and the first positioning block (9) has a positioning hole (10). The float assembly (5) includes: First float (11); A float rod (13) is fixed to the top of the first float (11). The float rod (13) passes through the positioning hole (10) and can move along the positioning hole (10).

6. The large-flow-rate, one-time opening and closing float valve according to claim 5, characterized in that, The top of the float rod (13) is provided with a second positioning block (14) that can abut against the top surface of the first positioning block (9).

7. The large-flow-rate, one-time opening and closing float valve according to claim 5, characterized in that, The float assembly (5) also includes: The second float (12) is connected to the bottom of the first float (11) by an adjusting rope (21).

8. The large-flow-rate, one-time opening and closing float valve according to claim 7, characterized in that, The second float (12) is a counterweight float.

9. The large-flow-rate, one-time opening and closing float valve according to claim 1, characterized in that, The valve body (1) is fixedly provided with a stationary valve plate (15) and a moving valve plate (16) driven by the valve core (2) and rotating relative to the stationary valve plate (15). The stationary valve plate (15) is provided with a water outlet (17) and the moving valve plate (16) is provided with a water outlet (18). When the valve core (2) is in the open state, the water outlet (18) is correspondingly arranged with the water outlet (17); when the valve core (2) is in the closed state, the water outlet (18) is staggered from the water outlet (17).

10. The large-flow-rate, one-time opening and closing float valve according to claim 9, characterized in that, The moving valve plate (16) is formed with a fan-shaped groove (19), and the end of the valve core (2) is provided with a valve core shaft head (20) that is inserted into the fan-shaped groove (19) and can move therein. When the valve core (2) is in the open state, the valve core shaft head (20) abuts against the inner wall of one side of the sector groove (19); During the switching process between the open and closed states of the valve core (2), the valve core shaft head (20) moves within the sector groove (19), while the moving valve plate (16) remains stationary. When the valve core (2) is in the closed state, the valve core shaft head (20) abuts against the inner wall of the other side of the sector groove (19).

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