Heating water leakage protection valve

Abstract

The utility model discloses a heating water leakage protection valve which is characterized in that a valve sealing wall is arranged in the middle of the lower end of a valve body, a water flow through hole is formed in the middle of the valve sealing wall, a groove is formed in the side, facing a water inlet, of the water flow through hole, and an O-shaped sealing ring is arranged in the groove; a shaft hole is formed in the upper end of the valve sealing wall, a rotating shaft is arranged in the shaft hole, and the rotating shaft is fixedly connected with the root of a baffle. The end part of the baffle plate corresponds to the O-shaped sealing ring when rotating; the valve has the advantages that the valve can be mechanically and automatically closed under the conditions of a large amount of water leakage such as pipeline burst, nut tripping and plastic pipe breakage, and economic loss is reduced. The valve is an adjusting valve, flow induction manual adjustment can be carried out according to the difference of central heating terminal clients, and the valve is automatically closed if the flow becomes large abnormally; the valve can also prevent a terminal user from draining water privately.

Description

Technical Field

[0001] This utility model relates to the field of valve technology, specifically a leakage protection valve. Background Technology

[0002] Leaks are a frequent occurrence in heating pipe systems, often causing property damage. Existing heating pipe systems, especially those from the inlet manifold, are typically equipped with ball valves, which can be manually shut off in case of a leak. However, leaks often occur suddenly and unnoticed, leading to significant flooding and even damage to floors below if not detected promptly. Therefore, there is an urgent need for a valve that can automatically shut off the water supply in the event of a leak. Utility Model Content

[0003] To solve the above-mentioned technical problems, the purpose of this utility model is to provide a heating leakage protection valve, including a valve body, a pressure cap at the upper end of the valve body, a frame-type sealing ring between the pressure cap and the valve body, and the pressure cap and the valve body are connected by fixing screws; an inlet and an outlet are respectively provided at both ends of the valve body; a valve sealing wall is provided at the middle position of the lower end of the valve body, a water flow hole is provided in the middle of the valve sealing wall, a groove is provided on the side of the water flow hole facing the water inlet, and an O-ring is provided in the groove; a shaft hole is provided at the upper end of the valve sealing wall, a rotating shaft is provided in the shaft hole, and the rotating shaft is fixedly connected to the root of a baffle; when the end of the baffle rotates, it corresponds to the O-ring.

[0004] The front end of the rotating shaft passes through the shaft hole and corresponds to the blind hole on the rear side wall of the valve body. The rear end of the rotating shaft passes through the through hole on the front side wall of the valve body. A rotating seal ring is provided between the through hole on the front side wall of the valve body and the rotating shaft. The front side wall of the valve body is also provided with a rotation resistance adjustment structure. The rotation resistance adjustment structure includes an adjustment O-ring seal ring embedded in the groove of the front side wall of the valve body. The axial front end of the adjustment O-ring seal ring abuts against the front side wall of the valve body, the axial rear end of the adjustment O-ring seal ring abuts against the pressure block, and the radial inner side of the adjustment O-ring seal ring abuts against the rotating shaft. The pressure block is fixed to the adjustment pressure plate, and the adjustment pressure plate is fixed to the front side wall of the valve body by screws.

[0005] The end of the baffle is provided with a bent part, and the lower end of the valve sealing wall is provided with a corresponding fastening groove.

[0006] The pressure cap is equipped with a pressure gauge interface.

[0007] The valve body is square.

[0008] A handle is provided at the rear end of the rotating shaft.

[0009] A plastic gasket and a plastic washer are provided at the front end of the rotating shaft.

[0010] The advantages of this invention are: in the event of a large leak such as a pipe burst, nut coming loose, or plastic pipe breaking, this valve will automatically close mechanically, reducing economic losses. This valve is a regulating valve, which can be manually adjusted based on the flow rate of different central heating end-users. If the flow rate becomes abnormally high, the valve will automatically close; this valve also prevents end-users from releasing water without authorization. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the structure of the present invention;

[0012] Figure 2 yes Figure 1 The left view;

[0013] Figure 3 yes Figure 1 Top view;

[0014] Figure 4 This is a schematic diagram of the rotational resistance adjustment structure. Detailed Implementation

[0015] The present invention will now be described in detail with reference to the accompanying drawings. As shown in the drawings, a pressure cap 3 is provided at the upper end of the valve body 1, and a frame-type sealing ring 4 is provided between the pressure cap and the valve body. The pressure cap and the valve body are connected by fixing screws 2. An inlet 101 and an outlet 102 are respectively provided at both ends of the valve body. A valve sealing wall 10 is provided at the middle position of the lower end of the valve body. A water flow hole 1001 is provided in the middle of the valve sealing wall 10. A groove is provided on the side of the water flow hole facing the inlet. An O-ring seal 12 is provided in the groove. A shaft hole 1003 is provided at the upper end of the valve sealing wall. A rotating shaft 13 is provided in the shaft hole. The rotating shaft is fixedly connected to the root of the baffle 11. When the end of the baffle rotates, it corresponds to the O-ring seal 12.

[0016] The front end of the rotating shaft passes through the shaft hole and corresponds to the blind hole on the rear side wall of the valve body. The rear end of the rotating shaft passes through the through hole on the front side wall of the valve body. A rotating sealing ring 9 is provided between the through hole on the front side wall of the valve body and the rotating shaft. A rotating resistance adjustment structure is also provided on the front side wall of the valve body. The rotating resistance adjustment structure includes an adjusting O-ring 6 embedded in the groove of the front side wall of the valve body. The axial front end of the adjusting O-ring abuts against the front side wall of the valve body, the axial rear end of the adjusting O-ring abuts against the pressure block 801, and the radial inner side of the adjusting O-ring abuts against the rotating shaft 13. The pressure block 801 is fixed to the adjusting pressure plate 8, and the adjusting pressure plate 8 is fixed to the front side wall of the valve body by screws 7.

[0017] To ensure close contact, the end of the baffle 11 is provided with a bent portion 111, and the lower end of the valve sealing wall is provided with a corresponding fastening groove 1004.

[0018] The pressure cap is equipped with a pressure gauge interface 5.

[0019] The valve body is square, and the square structure makes it easier to install.

[0020] To facilitate adjustment, a handle 16 is provided at the rear end of the rotating shaft.

[0021] To prevent locking caused by wear and long-term corrosion, a plastic washer 14 and a plastic washer 15 are provided at the front end of the rotating shaft.

[0022] The principle of this utility model is as follows: the baffle 11 is normally set at position a. When the water flow increases rapidly, the water will rotate the baffle from position a to position b and then to position c. At position c, the end of the baffle 11 is in contact with the O-ring 12 set in the groove, thereby hindering the flow of water and realizing the valve is closed.

[0023] The rotational resistance of the rotating shaft is crucial to the valve operation of this invention. Therefore, the rotational resistance adjustment structure of this invention includes an adjusting O-ring 6 embedded in a groove on the front side wall of the valve body. Under the pressure of the screw 7, the adjusting plate drives the pressure block 801 to move, axially pressing the adjusting O-ring 6. Under this pressure, the adjusting O-ring 6 expands radially, further pressing the rotating shaft and increasing the resistance to its rotation. This structure allows for adjustment of the rotational resistance of the rotating shaft 13.

[0024] In the description of this utility model, unless otherwise stated, "a plurality of" means two or more; the terms "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing this utility model and 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, and therefore should not be construed as a limitation of this utility model.

Claims

1. A heating system leakage protection valve, comprising a valve body, characterized in that: A pressure cap is provided at the upper end of the valve body, and a frame-type sealing ring is provided between the pressure cap and the valve body. The pressure cap and the valve body are connected by fixing screws. A water inlet and a water outlet are respectively provided at both ends of the valve body. A valve sealing wall is provided at the middle position of the lower end of the valve body. A water flow hole is provided in the middle of the valve sealing wall. A groove is provided on the side of the water flow hole facing the water inlet. An O-ring is provided in the groove. A shaft hole is provided at the upper end of the valve sealing wall. A rotating shaft is provided in the shaft hole. The rotating shaft is fixedly connected to the root of the baffle. When the end of the baffle rotates, it corresponds to the O-ring. The front end of the rotating shaft passes through the shaft hole and corresponds to the blind hole on the rear side wall of the valve body. The rear end of the rotating shaft passes through the through hole on the front side wall of the valve body. A rotating seal ring is provided between the through hole on the front side wall of the valve body and the rotating shaft. The front side wall of the valve body is also provided with a rotation resistance adjustment structure. The rotation resistance adjustment structure includes an adjustment O-ring seal ring embedded in the groove of the front side wall of the valve body. The axial front end of the adjustment O-ring seal ring abuts against the front side wall of the valve body, the axial rear end of the adjustment O-ring seal ring abuts against the pressure block, and the radial inner side of the adjustment O-ring seal ring abuts against the rotating shaft. The pressure block is fixed to the adjustment pressure plate, and the adjustment pressure plate is fixed to the front side wall of the valve body by screws.

2. The heating leakage protection valve according to claim 1, characterized in that: The end of the baffle is provided with a bent part, and the lower end of the valve sealing wall is provided with a corresponding fastening groove.

3. The heating leakage protection valve according to claim 1, characterized in that: The pressure cap is equipped with a pressure gauge interface.

4. The heating leakage protection valve according to claim 1, characterized in that: The valve body is square.

5. The heating leakage protection valve according to claim 1, characterized in that: A handle is provided at the rear end of the rotating shaft.

6. The heating leakage protection valve according to claim 1, characterized in that: A plastic gasket and a plastic washer are provided at the front end of the rotating shaft.

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