CN2434480Y - Automatic close valve - Google Patents

Abstract

The automatic shut-off valve is composed of a valve body and a cylinder body. There is a ejector rod in the right chamber of the valve body. The left end of the ejector rod touches the spool installed in the left chamber of the valve body. The channel in the left chamber of the body; the right end of the ejector rod can touch the slide rod set in the cylinder body. Small hole and groove and coincide with the lower cylinder head that has concave surface. When the handle is lifted by hand, the slide rod will move the ejector rod to the left, push the valve core, and the tap water will enter the high-level water tank through the left and right chambers of the valve body; when the water tank is full, the water will flow into the cylinder from the overflow pipe, The water presses the slider to move down, and the ejector rod moves to the right automatically, and then the sealing ring of the valve core closes the channel of the left chamber of the valve body, that is, the water supply stops.

Description

automatic shut-off valve

The utility model relates to an automatic shut-off valve for filling water of a high-level water tank, in particular to an automatic shut-off valve for filling water that is started by overflowing water after the high-level water tank is full.

The water supply pipe of the existing high-level water tank is set on the top of the water tank, and the water outlet pipe is set at the bottom of the water tank. The control of the water supply often uses a float control valve, so there are various float control valves on the market. , These water supply devices controlled by float balls may leak water from the valve body or troublesome maintenance, and some water tanks do not use float balls to control water supply, and only the overflow water after the water tank is full indicates that the user closes the tap water valve. The selling price of the equipment can be reduced, but the user needs to wait for the water tank to be full before leaving, and problems such as the user forgetting to turn off the water after turning on the water also occur.

The purpose of this utility model is to address the deficiencies of the prior art, to provide a water supply automatic shut-off valve that can be installed on the upper and lower water pipes at the bottom of the high-level water tank. The water will start the action of the automatic shut-off valve to stop the water supply. The automatic shut-off valve is composed of a valve body and a cylinder body. There is a push rod that can move left and right in the valve body. The left end of the push rod supports a valve core with a spring at the end. The right-hand end of bar stretches into the cylinder body, and a slide bar that is set upright is established in the cylinder body, and this slide bar is thin at the top and thick at the bottom, and the middle part is a cone. The side of the cone can touch the right end of the push rod, and the lower end of the slide rod is screwed to a slide block, which has small holes and grooves. Lift the handle on the top of the slide bar by hand, lift the slide bar and press the ejector bar to the left side of the valve body, push the valve core, and the tap water will enter the high-level water tank through the valve body; when the water tank is full, the excess Water flows out from the overflow pipe mouth, and flows into the cylinder body through the overflow joint on the right side of the cylinder body of the automatic shut-off valve. Because a large amount of water enters the cylinder body and forms pressure on the top of the slide block, when the pressure is greater than the load-bearing capacity of the slide bar and the slide block, the slide block moves down until the bottom of the cylinder body. Due to the downward movement of the slide rod, the left end of the ejector rod on the valve body is subjected to the thrust generated by the valve core moving to the right due to the right thrust of the spring and water, so that the ejector rod moves to the right until the seal at the right end of the valve core The ring has closed the water inlet channel of the valve body, that is, stops water supply. The purpose of automatically stopping the water feeding of the automatic closing valve is thus reached.

The automatic closing valve that the utility model refers is implemented like this:

An automatic shut-off valve that can be installed on the upper and lower water pipes at the bottom of the high-level water tank. This valve uses the water flowing out of the overflow pipe on the upper part of the high-level water tank to start the automatic shut-off valve to stop the water supply.

The automatic shut-off valve is composed of a valve body and a cylinder body. The upper part of the valve body is provided with a water outlet threaded nozzle for connecting the water outlet pipe. Shaped screw hole, a sealing head can be screwed, and the right side of the sealing head is the left chamber of the valve body. A circular groove is opened in the head along the central axis, and a valve core with a spring at the end is inserted in the groove. The right end of the valve core is provided with a valve head, and a sealing ring is arranged on the valve head. When the spool moves to the right, the sealing ring at the head of the spool can seal the channel opening of the left chamber of the valve body. A small round hole is opened on the side of the valve core rod to communicate with a circular hole opened from the end of the valve core rod along the central axis. This hole is used for tap water to flow into the spring cavity to increase the rightward movement force of the valve core; A cylinder body is connected to the right side of the body. On the same axis line as the valve core, a circular screw hole is opened at the joint between the left wall of the cylinder body and the right side of the valve body, and then an inner plug is screwed from the left inner wall of the cylinder body. The left side of the plug is the right chamber of the valve body, and the left and right chambers are opened. A circular passage is opened at the center of the inner plug, and a push rod is set in the passage. The left end of the push rod passes through the passages of the left and right chambers and touches the head of the valve core. Friction head, this anti-friction head is made of wear-resistant materials to prevent the right end of the ejector rod from being deformed by frequent contact with the slide rod, thus affecting the effect of the slide rod on the ejector rod; A water discharge joint is set at the center of the lower cylinder head, and a hose can be put on the joint for water supply and drainage. Sealing rings are provided on the sides of the upper and lower cylinder heads; Groove, this annular groove surface can coincide with the circular concave surface made along the center of the circle on the inner surface of the lower cylinder head, and then a small hole is opened on the annular groove of the slider, so the small hole and the groove, the circular concave surface and the The water discharge joint is interlinked, and is used for getting rid of accumulated water in the cylinder body. A circular hole with internal thread is opened at the center of the upper side of the slider. A sliding rod with a thin upper part, a thicker lower part and a tapered middle part can be screwed into the round hole. The top end of the sliding rod passes through the center of the upper cylinder head. Then, a handle is provided on the top of the slide bar exposed outside the upper cylinder head, and an overflow joint is established on the top of the right side of the cylinder body, and the overflow joint can be connected with the overflow pipe on the top of the high water tank. A one-way valve is set at the water outlet of the valve body, and this one-way valve is mainly to prevent the water in the high-level water tank from flowing out from the water inlet at the bottom of the water tank to enter the automatic shut-off valve when the tap water pressure is insufficient.

When installing, connect the overflow pipe of the high-level water tank with the overflow joint of the automatic shut-off valve, connect the water inlet pipe at the lower part of the high-level water tank with a one-way valve, and then connect the one-way valve with the thread on the upper part of the valve body of the automatic shut-off valve. The mouth of the pipe is connected; the tapered thread pipe mouth of the valve body bottom of the automatic shut-off valve is connected with the water pipe. Also can establish a tee pipe between the water inlet pipe of the bottom of one-way valve and high level water tank, connect a branch pipe and be connected with a control valve, use the water stored in the water tank for connecting shower or other water devices.

When in use, first pull the slider handle on the top of the cylinder with your hand, so the slider moves up to the middle of the cylinder until the upwardly moving slider is blocked by the side of the inner plug, at this time the side of the thick cylinder of the slider is just right Move up to the position where the push rod in the inner plug slides from the thin cylinder of the slide rod through the cone to the thick cylinder, so the thick cylinder presses the push rod to move to the left side of the valve body, and the left end of the push rod presses the seal again. The spool in the head moves to the left, so the sealing ring at the head of the spool breaks away from the channel opening of the left chamber of the valve body, and the water in the tap water pipe passes through the water inlet screw on the lower part of the valve body and passes through the left chamber on the right side of the head. The chamber passage flows into the left side of the inner plug, the right chamber passage enters the water outlet thread of the valve body, the one-way valve, and the three-way pipe enter the high-level water tank; when the water tank is full, the excess water flows out from the overflow pipe, and is automatically The overflow joint on the right side of the shut-off valve cylinder body flows into the cylinder body of the automatic shut-off valve. Because a large amount of water enters the cylinder body and forms pressure on the top of the slider, when the pressure is greater than the load-bearing capacity of the slider and the slider, the slider moves down until the bottom of the cylinder body matches the inner surface of the lower cylinder head; at this time, the slider The rod moves down synchronously to make the right end of the ejector rod in the valve body empty, so the spool at the left end of the valve body will receive the total thrust formed by the spring rebound and the pressure of the water entering the spring cavity through the small hole channel, so that the spool moves toward Move to the right, so the ejector rod is pushed out to the right, until the sealing ring of the spool seals the left chamber channel opening at the center of the valve body, forcing tap water to stop filling the high-level water tank. When the water supply stops, the overflow water also stops immediately. At this time, the water in the pipeline can continue to flow into the cylinder body, and flow into the water discharge joint through the small holes and grooves on the slider and the round concave surface on the inner surface of the lower cylinder head. Empty, so far, the purpose of automatically stopping the water supply of the automatic closing valve is fully achieved.

When using the water stored in the high-level water tank, the user can first open the tap water valve, then lift the handle on the automatic shut-off valve cylinder body, adjust and control the water quantity by the water control valve, and adjust the water temperature with the tap water control valve, that is, It can be used for showering or other purposes without paying attention to the situation changes in the upper water tank and the high-level water tank. After use, close the water valve and leave. And the water in the water tank promptly can be topped up automatically, makes automatic shut-off valve close water supply until overflowing water. The whole operation process is very convenient, no need for people to worry about, and no waste of water.

The benefits of using an automatic shut-off valve are:

The automatic shut-off valve has a simple structure, is easy to maintain, is safe and practical, and has strong reliability; it is easy to operate, and people can use water as needed. It can save water and time, avoid waiting for the water tank to be full before closing the water supply valve, and avoid the waste of tap water caused by forgetting to turn off the water. The upper water pipe is equipped with a one-way valve, which can prevent the water in the water tank from flowing back into the automatic shut-off valve to cause water waste when the tap water pressure is insufficient. The automatic shut-off valve can be used in solar water heaters and other occasions that need to automatically close the water supply after the water in the high-level water tank is full.

The automatic shut-off valve indicated by the utility model will be described in detail below in conjunction with the accompanying drawings.

Accompanying drawing 1 is the structural representation of automatic closing valve;

Accompanying drawing 2 is the installation diagram of automatic closing valve.

Referring to attached drawing 1:

The automatic shut-off valve is composed of a valve body 1 and a cylinder body 13. The valve body 1 is provided with a water outlet threaded nozzle 23 for connecting the water outlet pipe. The valve body 1 is provided with a tapered threaded nozzle 22 for connecting the tap water pipe; A circular screw hole is opened on the left side of 1, and a head 3 can be screwed into the screw hole. The right side of the head 3 is the left chamber of the valve body 1, and a circular groove is opened in the head 3 along the central axis. Insert a spool 4 connected with a spring 5 at the end in the groove, the right end of the spool 4 is provided with a valve head, the valve head is provided with a sealing ring 2, a small round hole is opened on the side of the spool 4 rod and is connected with the end of the spool 4 rod. A circular groove opened at the central axis communicates; a cylinder body 13 is connected to the right side of the valve body 1, on the same axis line as the valve core 4, from the left wall of the cylinder body 13 to the right side of the valve body 1 A circular screw hole is opened at the part where the side is connected, and an inner plug 20 is screwed into the screw hole from the left inner wall of the cylinder body 10. The left side of the inner plug 20 is the right chamber of the valve body 1, and the valve The left chamber of the body 1 is connected with the right chamber. A circular passage is opened at the center of the inner plug 20, and a push rod 21 is arranged in the passage. The left end of the push rod 21 touches the head of the valve core 4, and the right end of the push rod 21 is screwed to a friction-reducing head 19. This anti-friction head 19 is made of wear-resistant material to prevent the right end of the push rod 21 from sliding due to wear; a round hole is opened between the bottom of the water outlet threaded nozzle 23 and the right chamber of the valve body 1 for passage. For water; a round hole is opened between the bottom of the tapered threaded nozzle 22 and the left chamber of the valve body 1 for water use; when the valve core 4 withstands the left chamber passage, the valve core 4 ends The sealing ring 2 at the part can just seal the channel opening of the left chamber, so that the left chamber of the valve body 1 is cut off from the right chamber, that is, water cannot pass through. Match cylinder cover 17,11 at cylinder body 13 upper and lower two ends, the circle center place of lower cylinder cover 11 establishes a water discharge joint 8, can put flexible pipe on this water discharge joint 8, water supply and drainage usefulness; Upper and lower cylinder cover The sides of 11 are all provided with sealing rings 10,16, and a circular concave surface 6 is established along the center of circle on the inner face of lower cylinder head 11. What overlaps with the inner surface of the lower cylinder head 11 is a slide block 12, and a groove 7 is formed under the slide block 12. This groove 7 should coincide with the inner concave surface 6 of the lower cylinder head 11. Open an aperture 9 on the groove 7, so aperture 9 communicates with groove 7, circular concave surface 6 and drain joint 8. A circular hole with an internal thread is opened at the center of the upper side of the slider 12, and a sliding rod 14 with a thin upper part, a thicker lower part, and a tapered middle part can be screwed into the round hole, and the top end of the sliding rod 14 passes through the upper cylinder. The circular hole at the center of circle of cover 17 is provided with a handle 18 at the top of slide bar 14 at last. An overflow joint 15 is established on the top of the right side of the cylinder body 13, and the overflow joint 15 can be connected with the overflow pipe 26 on the top water tank. A check valve 24 is established at the water outlet of valve body 1, and this check valve 24 mainly prevents that the water in the high-level water tank flows back into the automatic closing valve body and loses when the tap water hydraulic pressure is insufficient.

Referring to attached picture 2:

During installation, the overflow nozzle 26 of the high-level water tank 25 is connected with the overflow joint 15 of the automatic shut-off valve, the water inlet nozzle 29 of the high-level water tank 25 bottom is connected with a three-way pipe 28, and the three-way pipe 28 is connected with the one-way The valve 24 is connected, and the one-way valve 24 is connected with the water outlet threaded nozzle 23 on the valve body 1 top of the automatic closing valve; connected. A nozzle of the three-way pipe 28 is connected with a branch pipe and connected with a control valve 27 for connecting a shower or other water devices.

When in use, first pull the handle 18 on the top of the cylinder body 13 by hand, then lift the slide bar 14 to the middle part of the cylinder body 13, until the slide block 12 that moves up is blocked by the side of the inner plug 20, and the slide bar 14 The thick cylinder of the inner plug 20 moves upwards, so that the push rod 21 in the inner plug 20 slides from the thin cylinder of the slide rod 14 through the cone to the thick cylinder, so that the push rod 21 is pressed to move to the left side of the valve body 1, and the push rod 21 Then the valve core 4 in the sealing head 3 is pressed to move to the left, so the sealing ring 2 of the valve core head is separated from the left chamber channel opening in the center of the valve body 1, and the water in the water pipe passes through the water supply screw at the bottom of the valve body 1. 22 flows into the right chamber on the left side of the inner plug 20 through the left chamber on the right side of the head 3, and enters the high-level water tank 25 through the water outlet screw 23, the one-way valve 24, the three-way pipe 28, and the water outlet pipe 29; when the water tank is full , the excess water flows out from the mouth of the overflow pipe 26 and enters the overflow joint 15 on the right side of the cylinder body 13 of the automatic shut-off valve and flows into the cylinder body 13 of the automatic shut-off valve. When the pressure is greater than the load-bearing capacity of the slider 14 and the slider 12, the slider 12 moves down until the bottom of the cylinder body 13 matches the lower cylinder head 11; at this time, the slider 14 moves down synchronously so that The right end of the ejector rod 21 in the valve body 1 is empty, so the valve core 4 at the left end of the valve body 1 will receive the thrust formed by the rebound of the spring 5 and the pressure of the water entering the spring cavity through the round hole, so that the valve core 4 will Move to the right, and push rod 21 is synchronously ejected to the right, until the sealing ring 2 of valve core 4 closes the left chamber channel opening of valve body 1 center, forcing tap water to stop filling water in the high-level water tank 25. When the water supply stops, the overflow also stops immediately. At this time, the water in the pipeline can continue to flow into the cylinder body 13, and flow into the water discharge joint 8 through the small hole 9, the groove 7, and the concave surface 6 on the slider 12 to be emptied. , thereby achieving the purpose of automatically stopping the water supply by automatically closing the valve.

Use the tap water control valve of automatic closing valve to be opened all the time, when using water, only need to lift the handle on the cylinder body once, just can control water quantity and water temperature by tee pipe 28 and control valve 27 and tap water control valve. Never have to worry about getting on the water again.

The benefits of using an automatic shut-off valve are:

The structure of the automatic shut-off valve is simple, easy to maintain, safe and practical, and highly reliable; it is easy to operate, and each water user only needs to lift the handle on the cylinder body when using water, so that there is no need to control the situation of water supply, and the water can be used as needed . It can save water and time, and avoid the phenomenon of waiting for the water tank to be full before closing the water supply valve and forgetting to turn off the water, resulting in the waste of tap water. The upper water pipe is equipped with a one-way valve, which can prevent the water in the water tank from flowing back into the automatic shut-off valve to cause water waste when the tap water pressure is insufficient. The automatic shut-off valve can be used in solar water heaters and other occasions that need to automatically close the water supply after the water in the high-level water tank is full.

Claims (1)

1. The automatic closing valve is composed of a valve body and a valve core. It is characterized in that the automatic closing valve is composed of a valve body (1) and a cylinder body (13). A tapered threaded nozzle (22) is arranged below the valve body (f); a circular screw hole is opened on the left side of the valve body (1), and this screw hole is a valve body (1) that can be screwed to a sealing head (3). , the left side of the head (3) is the left chamber of the valve body (1), a circular groove is opened along the central axis of the head (3), and a valve core (4) with a spring (5) connected to the end is inserted in the groove. ), the right end of the spool (4) is provided with a valve head, the valve head is provided with a sealing ring (2), and a small hole is opened on the side of the spool (4) rod and is opened from the end of the spool (4) rod along the central axis. A circular groove is connected; a cylinder (13) is connected to the right side of the valve body (1), on the same axis line as the spool (4), from the left wall of the cylinder (13) to the valve A circular screw hole is drilled on the connected part on the right side of the body (1), and this screw hole is screwed with an inner plug (20) from the left inner wall of the cylinder body (10), and the right side of the inner plug (20) For the right chamber of the valve body (1), a circular passage is opened at the axis of the inner plug (20), and a push rod (21) is set in the passage, and the left end of the push rod (21) is connected to the valve core (4 ) head touches, the right end of the ejector rod (21) is screwed with a friction reducing head (19); there is a gap between the bottom of the threaded pipe with the water outlet threaded nozzle (23) and the right chamber of the valve body (1). Round hole; a round hole is opened between the bottom of the threaded pipe provided with tapered threaded nozzle (22) and the left chamber of the valve body (1), and then the left chamber and the right chamber of the valve body (1) Open up, the ejector rod (21) in the passage is in contact with the spool (4), and the sealing ring (2) at the head of the spool (4) should be able to seal the left chamber when it moves to the right. Passage port; The upper and lower two ends of cylinder body (13) are equipped with cylinder cover (17), (11), and the center of circle of lower cylinder cover (11) establishes a water discharge joint (8); Upper and lower cylinder cover ( The side of 11) is provided with a sealing ring (10) (16), and a circular concave surface (6) is provided along the center of the circle on the inner surface of the lower cylinder cover (11); a circle of grooves ( 7), this groove (7) can coincide with the circular concave surface (6) of the lower cylinder head (11), and a small hole (9) is opened upward in the groove (7) of the slider (12). The hole (9) communicates with the circular groove (7), the circular concave surface (6) and the water discharge joint (8); a circular hole with an internal thread is opened at the center of the circle on the upper side of the slide block (12). A slide bar (14) that is thin, thick, and middle part can be screwed in the hole, and the top of the slide bar (14) passes through the circular hole at the center of circle of the upper cylinder head (17). A handle (18) is provided on the top; an overflow joint (15) is provided on the top of the right side of the cylinder body (13), and the overflow joint (15) can be connected with the overflow pipe (26) on the top of the high water tank (25); A check valve (23) is established at the water outlet of the valve body (1).

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