CN103161980A - Mechanical water-break self-closing valve - Google Patents

Abstract

The mechanical water-cutting self-closing valve disclosed by the present invention comprises a hollow cavity valve body (2), a water inlet (1) and a water outlet (6) opened on the valve body, and a valve cover combined with the valve body (2). 8), the water inlet (1) is set lower than the water outlet (6); it also includes a pull rod (13) arranged in the valve body cavity, a spring (7) is sleeved on the pull rod, and the outer diameter of the lower end of the pull rod is equal to that of the valve body cavity The inner diameter of the valve plug (5) is limited by fasteners on the position of the valve plug on the pull rod; the pull rod is also provided with a gap, which can be matched with the movable deadbolt (9) of the lock (11) set on the valve cover. buckle. When the water is cut off, the spring rebounds, the pull rod moves downward, the valve plug is pushed to the bottom, and the water outlet is closed. The movable lock tongue is buckled in the gap, and the whole mechanism is locked, thus avoiding the phenomenon of running water and ensuring water safety. sex.

Description

A mechanical water shut-off self-closing valve

technical field

The invention relates to the technical field of water valves.

Background technique

In life, the phenomenon of water flow caused by forgetting to close or not tightening the faucet often occurs, which brings certain economic losses and potential safety hazards. At present, the research on the direction of water-cut self-closing valve at home and abroad is as follows: in China, it is mainly based on circuit control; in foreign countries, it is mainly based on pure mechanism structure, and the mechanism is cumbersome. There is still a certain gap in industrialization.

Contents of the invention

The technical problem to be solved by the invention is to provide a mechanical water-cutting self-closing valve with simple structure and high sensitivity.

In order to solve the above-mentioned technical problems, the present invention adopts the following technical solutions:

A mechanical water-cutting self-closing valve, comprising a hollow cavity valve body, a water inlet and a water outlet opened on the valve body, and a valve cover combined with the valve body, the water inlet is set lower than the water outlet; The pull rod in the body, the spring is sleeved on the pull rod, the lower end of the pull rod is connected to the valve plug whose outer diameter is equal to the inner diameter of the valve body cavity, and the position of the valve plug on the pull rod is limited by the fastener; there is also a gap on the pull rod, and the gap can It is buckled with the movable deadbolt of the lock provided on the valve cover.

Further, the valve body and the valve cover are screwed together through thread sealing.

Further, when the water is normally passed through, the water pressure pushes the valve plug to the top of the water outlet, and the water pressure is balanced with the sum of the elastic force of the spring and the gravity of the pull rod.

Further, when the water is cut off, the spring rebounds, the pull rod moves downward, the valve plug is located below the water outlet, and the movable lock tongue is buckled in the notch.

Further, the lock is also provided with a key for controlling the extension and retraction of the movable deadbolt.

Under normal water supply conditions, the valve is equivalent to an ordinary faucet. When the water is cut off suddenly, the valve plug will automatically and quickly close the water outlet. When the water comes in again, there will be no water leakage. Water safety.

The mechanical water cut-off self-closing valve created by the present invention is completely controlled based on the mechanical structure, and can be realized by using the mechanical common structure spring and pull rod, and the structure is simple; and the valve removes the circuit control part, saving power resources and electric control systems of instability. In addition, the buckle structure of the movable lock tongue and the notch of the pull rod has high mechanical sensitivity.

Description of drawings

Figure 1 is a schematic diagram of the appearance and structure of a mechanical water-cutting self-closing valve in a preferred embodiment of the present invention;

Fig. 2 is a structural schematic diagram of a mechanical water-cutting self-closing valve in a preferred embodiment of the present invention;

Detailed ways

1 and 2, the mechanical water shut-off self-closing valve of this embodiment includes a hollow cavity valve body 2 with an opening at the upper end of the valve body; a water inlet 1 and a water outlet 6 provided on the valve body, and the water inlet 1 is lower than Water outlet 6 is set. The upper end of the valve body 2 is screwed together with the valve cover 8 through thread sealing, and the valve cover is provided with a lock 11 . A pull rod 13 is set in the valve body cavity, and a spring 7 is sleeved on the pull rod. The lower end of the pull rod is a stepped shaft, and the small diameter shaft is connected with a valve plug 5 whose outer diameter is equal to the inner diameter of the valve body cavity. The valve plug is limited by the gasket 4 and the nut 3 on the pull rod. Location. Also be provided with notch on the pull bar, notch can be buckled with the movable dead bolt 9 of the lockset 11 that is provided on the bonnet.

During normal water flow, the water pressure pushes the valve plug 5 to the top of the water outlet 6, and the water pressure is balanced with the elastic force of the spring 7 and the gravity sum of the pull rod 13. When the water is cut off, the water pressure becomes zero in a short time. At this time, the spring 7 rebounds, the pull rod 13 moves downward, the valve plug 5 is pushed to the bottom, and the water outlet is closed. The movable deadbolt 9 is buckled in the gap. The whole mechanism is locked. When the water comes again, because the pull rod is locked, the water pressure cannot push up the valve plug, so the phenomenon of running water will not occur. When water is needed, twist the key 12 on the lockset 11, the lock body is opened, the movable dead bolt 9 is retracted, the water pushes up the valve plug, the water pressure reaches balance with the pull rod and the spring again, the water outlet is opened, and the waterway is unimpeded, normal water supply.

Claims (5)

1. mechanical type self-closing valve for water cut, comprise hollow cavity valve body (2), be opened in water intake (1) on valve body and water outlet (6), with the valve gap (8) of valve body (2) combination, it is characterized in that: water intake (1) arranges lower than water outlet (6); Also comprise the pull bar (13) that is arranged in the valve body cavity, sheathed spring (7) on described pull bar, pull bar lower end connecting external diameter is equal to the valve plug (5) of valve body cavity internal diameter, limits valve plug position on pull bar by fastening piece; Also be provided with breach on described pull bar, breach can with the movable dead bolt (9) of the lockset (11) that arranges on valve gap buckle mutually.

2. mechanical type self-closing valve for water cut according to claim 1, it is characterized in that: described valve body (2) and valve gap (8) screw by thread seal.

3. mechanical type self-closing valve for water cut according to claim 1 is characterized in that: during normal water flowing, hydraulic pressure with valve plug (5) top to water outlet top, the gravity sum balance of the elastic force of hydraulic pressure and spring (7) and pull bar (13).

4. mechanical type self-closing valve for water cut according to claim 1 is characterized in that: when cutting off the water supply, and spring (7) resilience, pull bar (13) is to bottom offset, and valve plug is positioned at the water outlet below, and movable dead bolt (9) is buckled in breach (14).

5. mechanical type self-closing valve for water cut according to claim 1, is characterized in that: also be provided with the key (12) that control activity dead bolt (9) stretches out and retracts on described lockset (11).

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