CN201074692Y - Valve for automatically protecting leakage of water-heating - Google Patents

Abstract

The utility model belongs to a hot-water heating valve, which particularly relates to an automatic protecting valve which can timely and automatically cut off water source to prevent a large quantity of central heating water from being leaked after leakage appears on hot-water heating. The hot-water heating leakage automatic protecting valve comprises a valve body (16), a valve core (6) and a valve cover (9). The utility model is characterized in that the left end and the right end of the valve body are a water inlet hole (5) and a water outlet hole (17), and the center of the valve body is a high-pressure hole (8), the valve cover is sealed on the top end of the high-pressure hole, and the valve core is fixed in the high-pressure hole, and the left side of a core body is provided with a gap for communicating the water inlet hole and the high-pressure hole, a core body is provided with a piston hole (7), a spring (12) is arranged in the piston hole, and the upper portion is equipped with a floating piston (10), the lower portion of the core body is provided with a transverse through hole (4) which communicates the water inlet hole and the water outlet hole, and the center portion of the through hole is provided with a cutoff valve (2). The utility model solves the problems that water which is leaked by hot-water heating is leaked in a large amount, householders are flooded by water, neighborhoods are affected, water waste and economic loss are caused.

Description

Plumbing leakage automatic protection valve

Technical field:

The utility model belongs to the water heating valve category, and relates to a water-saving automatic protection valve that can automatically cut off the water source and prevent a large amount of heating water from flowing out after the water heating pipeline leaks or the radiator bursts.

Background technique:

During the heating period, the heating pipeline leaks or the radiators often burst. The current method is to close the gate valve in the pipeline system by the plumbing personnel. Due to the untimely treatment, a large amount of heating water is often lost, flooding the residents, and causing disasters. Neighborhoods, causing economic loss and waste of water resources.

Invention content:

The purpose of the utility model is to provide a water heating leakage automatic protection valve for preventing a large amount of water from flowing out.

The technical scheme of the utility model is: it is composed of a valve body, a valve core, and a valve cover. The left and right ends of the valve body are water inlet holes and water outlet holes respectively, and the middle is a high-pressure hole, and the top of the high-pressure hole is sealed with a The valve cover, the valve core is fixed in the high-pressure hole, and there is a gap on the left side of the upper part of the core body, so that the water inlet hole is connected with the high-pressure hole. The piston hole has a built-in spring and a floating piston is installed above the piston hole. The lower part of the core body is provided with a horizontal through hole connecting the inlet and outlet holes, and a cut-off valve is arranged in the middle of the through hole.

The floating piston is cup-shaped, placed in the piston hole with the mouth of the cup facing downwards, water holes are arranged on the wall of the cup, and a ring of sealing surface is set on the outer edge of the bottom of the cup; the floating piston automatically floats on the valve cover under normal conditions. Underneath, the sealing surface automatically seals on the port of the piston hole in the leakage state.

The cut-off valve is a spherical valve.

The beneficial effect of the utility model is that once the plumbing pipeline leaks or the radiator bursts, the pressure at the water outlet of the protection valve drops rapidly, and the floating piston immediately closes the piston hole, so that the water in the water inlet hole will not continue to flow out, thereby avoiding a large number of reduce the waste of water resources and reduce the hazards of accidents, and reduce or avoid economic losses.

Description of drawings:

Fig. 1 is a sectional view of an automatic protection valve for plumbing leakage.

In the figure: 1-upper water block, 2-stop valve, 3-valve hole, 4-horizontal through hole, 5-inlet hole, 6-spool, 7-piston hole, 8-high pressure hole, 9-bonnet , 10-floating piston, 11-limiting fulcrum, 12-spring, 13-sealing surface, 14-water hole, 15-piston port, 16-valve body, 17-water outlet, 18-protector, 19-hand Bundle.

Detailed ways:

Referring to Fig. 1 for the embodiment of the utility model, specify:

The water heating leakage automatic protection valve is composed of a valve body (16), a valve core body (6) and a bonnet. The two ends of the valve body (16) are the water inlet hole (5) and the water outlet hole (17) of the 1 hour pipe respectively, and the middle It is a Φ50mm high-pressure hole (8), and the valve core (6) is fixed in the high-pressure hole. There is a notch on the left side of the core body to connect the water inlet hole with the high-pressure hole. There is a Φ15mm through hole at the bottom to connect the high pressure hole (8) with the water outlet hole (17). The piston hole has a built-in compression spring (12). This spring can bounce the floating piston when the inlet and outlet water pressures are balanced in the heating system. , to ensure that the high-pressure hole (6) is connected to the water outlet hole (17), the floating piston and the piston hole are in motion, and there are 6 small holes of Φ8mm evenly distributed on the piston wall, and the center of the through hole (4) at the lower part of the core is spherical. Globe valve; the floating piston should have its axis perpendicular to the horizontal plane when it is working.

The installation and operation process of the protection valve is: in a heating household (unit), no matter how many groups of radiators are composed, the protection valve is used in conjunction with the check valve. The protection valve must be vertical, that is, when the valve cover is horizontal On the water pipeline, the check valve is installed on the return water pipeline from the house. When the heating water is injected, the handle 19 of the valve is moved to the upper water level (1). Can. Once leakage occurs, the protection valve works, the floating piston (10) closes on the port (15) of the piston hole (7), cuts off the passage between the high-pressure hole (8) and the water outlet hole (17), the water inlet is blocked, and the unit The heater inside stops heating. After the fault is eliminated, move the handle (19) to the water level (1) position again. After refilling the water, move the handle back to the protection position (18). Do not move it casually during heating .

Claims (3)

1. a hot-water heating leaks automatic protection valve; by valve body (16); spool (6); valve gap (9) is formed; it is characterized in that: its left side of described valve body (16); right two ends are respectively water inlet (5) and osculum (17); and the centre is pressure hole (8); the pressure hole end sealing has valve gap (9); fixing spool (6) in the pressure hole; its core body top left has breach is communicated with water inlet and osculum; also be provided with the piston hole (7) that pressure hole is communicated with osculum on the core body; floating piston (10) is installed in built-in spring of piston hole (12) and top; its core body bottom is provided with and is communicated with to advance; the cross through hole of osculum (4), the neutral position of through hole are provided with shutoff valve (2).

2. hot-water heating according to claim 1 leaks automatic protection valve; it is characterized in that: described floating piston is cup-shaped; rim of a cup places piston hole down; be furnished with water port (14) on the wall of cup; the cup end, be provided with limiting foothold (11) in the top up; the outer rim at the cup end is provided with a circle sealing surface (13), and floating piston is in valve gap (9) below, and sealing surface (13) is in port (15) top of piston hole.

3. hot-water heating according to claim 1 leaks automatic protection valve, and it is characterized in that: described shutoff valve (2) is a ball valve.

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