Remote control floating ball valve capable of eliminating closing water hammer

Abstract

The utility model relates to valve technical field, and disclose a kind of remote control float ball valve that can eliminate closing water hammer, including valve body, valve stem is inserted in the valve body interior, locking nut is arranged on the valve stem outer surface, sealing ring pressing plate is movably attached on the locking nut upper side outer surface.This remote control float ball valve that can eliminate closing water hammer, by the remote control float ball valve that can eliminate closing water hammer, utilize the water pressure of pipeline upstream to promote valve flap to rise, open valve, supply water to water tank, when water tank liquid level reaches the required height, float ball rises under the action of buoyancy, to close valve, cut off pipeline to the discharge of water tank.Open valve, make pipeline continue to supply water to water tank, while valve body outlet rear side is provided with screw thread backflow preventer, after installing screw thread backflow preventer, screw thread backflow preventer opens when closing valve, inhale air, destroy internal vacuum, to avoid the water hammer effect of opening and closing valve to cause violent vibration and noise to valve and pipeline.

Description

Technical Field

[0001] This utility model relates to the field of valve technology, specifically to a remote-controlled float valve that can eliminate water hammer during shut-off. Background Technology

[0002] A remote-controlled float valve is a hydraulic control valve that uses a small float to control the opening and closing of the main valve, thus achieving automatic control and effectively controlling the liquid level in water towers, tanks, or pools. The small float valve consists of a float ball. When the water level in the water tower, tank, or pool rises to a set height, the float ball rises, closing the small float valve and subsequently pushing the main valve to close, stopping the water supply. When the water level drops, the float ball descends, closing the small float valve and reopening the main valve to restore the water supply, ensuring a stable liquid level. As can be seen, remote-controlled float valves that can eliminate water hammer during closure generally have their outlets submerged in water. However, existing remote-controlled float valves can generate a water hammer effect due to negative pressure when closed. The water hammer effect occurs inside water pipes with smooth inner walls, where water flows freely. When an open valve is suddenly closed, the water flow exerts pressure on the valve and pipe walls, primarily on the valve itself. Due to the smooth pipe walls, the subsequent water flow, under inertia, quickly reaches its maximum, causing damage.

[0003] To solve the above problems, we urgently need a remote-controlled float valve that can eliminate water hammer when shutting off. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a remote-controlled float valve that can eliminate water hammer during shut-off, thereby solving the problem mentioned in the background art where existing remote-controlled float valves generate water hammer due to negative pressure when closed, causing severe vibration and damage to the valve and pipeline when opening and closing the valve, accompanied by noise.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a remote-controlled float valve capable of eliminating water hammer during shut-off, comprising a valve body, a valve stem inserted inside the valve body, a locking nut on the outer surface of the valve stem, a sealing ring pressure plate movably fitted to the upper outer surface of the locking nut, a valve disc movably fitted to the upper outer surface of the sealing ring pressure plate, an O-ring between the valve disc and the valve stem, a sealing ring between the sealing ring pressure plate and the valve disc, a diaphragm pressure sleeve movably fitted to the upper side of the valve disc, a diaphragm between the valve disc and the diaphragm pressure sleeve, a spring fitted to the outer surface of the valve stem, a valve cover on the upper outer surface of the valve body, an exhaust valve on the upper outer surface of the valve cover, a sealing plug on the left side of the upper outer surface of the valve cover away from the exhaust valve, and a threaded backflow preventer on the rear side of the valve body;

[0006] The valve body inlet is connected to a needle valve, the needle valve is connected to a ball valve, the ball valve is connected to a flow-stabilizing needle valve, and the flow-stabilizing needle valve is connected to a float.

[0007] Preferably, the spring is in movably fitted to the inner surface of the diaphragm sleeve.

[0008] Preferably, the valve body and the valve cover are connected by a double-ended bolt, and a hexagonal nut is threaded onto the outer surface of the double-ended bolt.

[0009] Preferably, the valve stem passes through the valve disc, locking nut, sealing ring pressure plate, and diaphragm pressure sleeve.

[0010] Preferably, there are two double-ended bolts and two hexagonal nuts.

[0011] Compared with the prior art, the beneficial effects of this utility model are:

[0012] This remote-controlled float valve, designed to eliminate water hammer during shut-off, utilizes upstream water pressure to raise the valve disc, opening the valve and supplying water to the tank. When the water level in the tank reaches the desired height, the float rises under buoyancy, closing the valve and cutting off water flow to the tank. When water is drained from the tank, the float falls, opening the upper chamber. At this point, upstream pressure causes the valve disc to rise again, opening the valve and allowing water to continue flowing to the tank. Simultaneously, a threaded backflow preventer is installed at the rear of the valve outlet. With this preventer installed, when the valve is closed, it opens, drawing in air and breaking the internal vacuum, thus preventing water hammer effects from causing severe vibration and noise to the valve and pipeline. Attached Figure Description

[0013] Figure 1 This is a side sectional view of the present invention.

[0014] Figure 2 This is a frontal sectional view of the present invention.

[0015] In the diagram: 1. Valve body; 2. Valve stem; 3. Locking nut; 4. Sealing ring pressure plate; 5. O-ring; 6. Sealing ring; 7. Valve disc; 8. Diaphragm sleeve; 9. Spring; 10. Diaphragm; 11. Valve cover; 12. Hex nut; 13. Double-ended bolt; 14. Exhaust valve; 15. Sealing plug; 16. Needle valve; 17. Ball valve; 18. Flow-stabilizing needle valve; 19. Float; 20. Threaded backflow preventer. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0017] Referring to Figures 1-2, in order to solve the problem that existing remote-controlled float valves generate water hammer due to negative pressure when closed, causing severe vibration and damage to the valve and pipeline when opening and closing the valve, and accompanied by noise, a remote-controlled float valve 17 that can eliminate water hammer during closure is provided. The valve includes a valve body 1, characterized in that: a valve stem 2 is inserted inside the valve body 1, a locking nut 3 is provided on the outer surface of the valve stem 2, and a sealing ring pressure plate 4 is movably fitted onto the upper outer surface of the locking nut 3. A valve disc 7 is movably fitted, an O-ring 5 is provided between the valve disc 7 and the valve stem 2, a sealing ring 6 is provided between the sealing ring pressure plate 4 and the valve disc 7, a diaphragm 10 is movably fitted on the upper side of the valve disc 7, a diaphragm 10 is provided between the valve disc 7 and the diaphragm pressure plate 8, a spring 9 is fitted on the outer surface of the valve stem 2, a valve cover 11 is provided on the upper outer surface of the valve body 1, an exhaust valve 14 is provided on the upper outer surface of the valve cover 11, a sealing screw plug 15 is provided on the left side of the upper outer surface of the valve cover 11 away from the exhaust valve 14, and a threaded backflow preventer is provided on the rear side of the outlet of the valve body 1.

[0018] The valve body 1 inlet is connected to needle valve 16, needle valve 16 is connected to ball valve 17, ball valve 17 is connected to flow-stabilizing needle valve 18, and flow-stabilizing needle valve 18 is connected to float ball 19.

[0019] Working principle: When using the remote-controlled float valve 17 that can eliminate water hammer, the valve 17 uses the water pressure upstream of the pipeline to push the valve disc upward, opening the valve and supplying water to the pool. When the water level in the pool reaches the required height, the float 19 rises under the action of buoyancy, thereby closing the valve and cutting off the discharge from the pipeline to the pool. When the pool is drained, the float 19 falls, opening the flow in the upper chamber. At this time, the upstream pressure causes the valve disc to rise again, opening the valve and allowing the pipeline to continue supplying water to the pool. At the same time, a threaded backflow preventer is installed on the rear side of the valve body 1 outlet. After installing the threaded backflow preventer, when the valve is closed, the threaded backflow preventer opens, drawing in air and breaking the internal vacuum, thereby avoiding severe vibration and noise.

[0020] Compared with related technologies, the remote control float valve 17 provided by this utility model, which can eliminate water hammer during shut-off, has the following beneficial effects: the remote control float valve 17, which can eliminate water hammer during shut-off, has a rapid float ball 19 action, high accuracy in liquid level control, is flexible and durable, the water level is not affected by water pressure and it is tightly closed without leakage. At the same time, it is equipped with a threaded backflow preventer to avoid the water hammer effect caused by negative pressure when the remote control float valve 17 is closed, thereby reducing or eliminating the severe vibration and noise it causes to the valve and pipeline.

[0021] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A remote control floating ball valve (17) capable of eliminating closing water hammer, comprising a valve body (1), characterized in that: A valve stem (2) is inserted inside the valve body (1). A locking nut (3) is provided on the outer surface of the valve stem (2). A sealing ring pressure plate (4) is movably attached to the upper outer surface of the locking nut (3). A valve disc (7) is movably attached to the upper outer surface of the sealing ring pressure plate (4). An O-ring (5) is provided between the valve disc (7) and the valve stem (2). A sealing ring (6) is provided between the sealing ring pressure plate (4) and the valve disc (7). An O-ring (5) is movably attached to the upper surface of the valve disc (7). A diaphragm (10) is provided between the valve disc (7) and the diaphragm sleeve (8). A spring (9) is provided on the outer surface of the valve stem (2). A valve cover (11) is provided on the upper outer surface of the valve body (1). An exhaust valve (14) is provided on the upper outer surface of the valve cover (11). A sealing plug (15) is provided on the left side of the upper outer surface of the valve cover (11) away from the exhaust valve (14). A threaded backflow preventer is provided on the rear side of the outlet of the valve body (1). The valve body (1) inlet is connected to the needle valve (16), the needle valve (16) is connected to the ball valve (17), the ball valve (17) is connected to the flow-stabilizing needle valve (18), and the flow-stabilizing needle valve (18) is connected to the float (19).

2. A remote control floating ball valve (17) capable of eliminating closing water hammer according to claim 1, characterized in that: The spring (9) is in contact with the inner surface of the diaphragm sleeve (8).

3. The remote-controlled float valve (17) for eliminating water hammer according to claim 1, characterized in that: The valve body (1) and the valve cover (11) are connected by a double-ended bolt (13), and a hexagonal nut (12) is threaded onto the outer surface of the double-ended bolt (13).

4. The remote-controlled float valve (17) for eliminating water hammer according to claim 1, characterized in that: The valve stem (2) passes through the valve disc (7), the locking nut (3), the sealing ring pressure plate (4), and the diaphragm pressure sleeve (8).

5. A remote-controlled float valve (17) for eliminating water hammer according to claim 3, characterized in that: Two double-ended bolts (13) are provided, and two hexagonal nuts (12) are also provided.

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