CN102704556A - Water inlet valve - Google Patents

Abstract

The invention discloses a water inlet valve. A water sealing piston and an eccentric shaft are installed in the water inlet pipe and the water inlet cavity of the top cover and are located under the water stop pad. The water sealing piston is driven by the eccentric shaft to open and close the water inlet hole; outside the water inlet pipe The water storage tank is fixed, the top of the upper water storage chamber is open, and the lower water chamber has an upper vent and a lower water inlet. A siphon tube and a float are installed in the water storage chamber. The siphon tube communicates with the water chamber, and the top of the float is equipped with a first magnetic element; A small buoy is installed on the outside of the water storage tank, and a switch plate is provided on the small buoy to switch the upper vent with the small buoy up and down; a water diversion groove is formed on the periphery of the top cover to face the water storage cavity; Connecting rod, lever and latch, the connecting rod connects the lever and the eccentric shaft, the connecting rod or the lever is provided with an energy storage spring, the other end of the lever is inserted with a latch, and the latch is equipped with a second magnetic element and a return spring. The invention is convenient to stop water inflow in time when the water tank fittings and the water tank fail, and reduces the waste of water resources.

Description

a water inlet valve

technical field

The present invention relates to a water inlet valve, in particular to a water inlet valve that can stop water inlet when the drain valve is stuck and there is a large or small water leakage, or the water inlet valve cannot stop the water, resulting in continuous overflow, etc. .

Background technique

In the prior art, there is a water inlet valve consisting of a water inlet pipe, a top cover, a water stop pad, a back pressure pad, a swing arm and a buoy. The lower end of the water inlet pipe is installed on the water supply pipe of the water tank, and the top cover is installed on the water inlet pipe. The upper end of the top cover and the inside of the water inlet pipe form a water inlet cavity, and a water stop surface with a water inlet hole is formed in the water inlet cavity. Pressure hole, the middle section of the swing arm is pivoted on the top cover, one end of the swing arm is facing the back pressure hole and a back pressure pad is installed, the other end of the swing arm is connected with the adjustment rod of the buoy, and there is a watertight seal between each component. seals. When in use, when the water level of the water tank drops, the buoy will fall under the action of gravity, which will drive the swing arm to deflect, so that the back pressure pad will open the back pressure hole, and the water will flow from the water supply pipe through the water inlet pipe, water inlet hole, top cover and back pressure hole. Enter the water tank to realize water intake. When the water level of the water tank rises, the buoy will rise accordingly, driving the swing arm to deflect, so that the back pressure pad closes the back pressure hole again, and water cannot enter the water tank from the back pressure hole of the top cover. , The water-stop pad produces back pressure and deforms to seal the water inlet hole on the water-stop surface, so as to stop the water inlet.

However, water tank accessories (water inlet valve, drain valve, buttons and other auxiliary seals, etc.) are prone to failure after a period of use, for example: the drain valve will not close tightly and slowly leak water (small leaks), drain valve parts Faults or button failures cannot be closed and the water continues to drain (big water leak), or the water inlet valve cannot stop water intake and continues to enter water, eventually resulting in excessive water intake that can only be discharged through the overflow pipe of the water tank. The above situations directly lead to waste of water resources.

For this reason, the inventor has improved the structure of the water inlet valve so that the water inlet valve can be stopped in time when the above-mentioned situation occurs, and this case results from this.

Contents of the invention

The purpose of the present invention is to provide a water inlet valve, so as to stop water inlet in time in case of water leakage or long-term overflow, so as to reduce waste of water resources.

In order to achieve the above object, the solution of the present invention is:

A water inlet valve, which consists of a water inlet pipe, a top cover, a water stop pad, a back pressure pad, a swing arm and a buoy; a water seal is installed below the water stop pad in the water inlet cavity formed inside the water inlet pipe and the top cover Piston and eccentric shaft, one end of the eccentric shaft is inserted on the sealing water piston and the other end protrudes out of the water inlet cavity in a sealed shape, the water sealing piston is driven by the eccentric shaft to move up and down in the axial direction to close or open the water inlet hole on the water stop surface A water storage cylinder is also fixedly installed outside the water inlet pipe. The upper part of the water storage cylinder is a water storage chamber and the lower part is a water storage chamber. The top of the water storage chamber is open. Siphon tube, one end of the siphon tube is close to the bottom of the water storage chamber and the other end passes through the bottom of the water storage chamber to communicate with the lower water chamber, a float is also placed in the water storage chamber, and the first magnetic element is installed on the top of the float; The small buoy is installed on the outside in a liftable manner. The upper vent corresponding to the lower water chamber on the small buoy has a switch plate that can open the upper vent as the small buoy rises and close the upper vent as the small buoy descends; there is also a guide on the periphery of the top cover. The water tank, the drip opening of the water guide tank is facing the water storage chamber; a connecting rod, a lever and a latch are installed outside the water inlet pipe and the top cover, and one end of the connecting rod is connected to one end of the lever and the other end is fixed on the other end of the eccentric shaft On the connecting rod or lever, there is an energy storage spring, and the other end of the lever is provided with a pin in a pluggable manner, and the second magnetic element that controls the pull-out of the pin is installed on the pin corresponding to the first magnetic element, and the reset that makes the pin reset and insert spring.

A sealing ring is provided between the eccentric shaft and the opening of the water inlet chamber; a sealing pad is provided above the water sealing piston.

A sponge for controlling the passing speed of water droplets is housed in the water diversion tank.

The top of the water inlet pipe forms an inner boss, and a water sealing spring is installed on the inner boss, the upper end of the water sealing spring is against the bottom of the water sealing piston and the lower end of the water sealing spring is against the inner boss.

A chute is formed outside the side wall of the water storage tank, and the upper air vent is located in the chute. The small buoy has an upper counterweight chamber and a lower buoyancy chamber. The upper counterweight chamber is slidably arranged in the chute of the water storage tank, and the upper counterweight chamber A connecting port is opened below the outer side wall of the upper counterweight cavity, and a switch plate is formed corresponding to the upper vent hole above the inner side wall of the upper counterweight chamber.

One end of the lever forms a shift fork, the outer side of the shift fork is short and the inner side is long, the connecting rod is composed of a first connecting rod and a second connecting rod, one end of the first connecting rod is inserted in the shifting fork and the other end is pivoted On one end of the second connecting rod, the other end of the second connecting rod is fixed on the other end of the eccentric shaft, and the first connecting rod also extends to form a lifting rod, which is arranged in the lifting groove formed outside the top cover. The energy spring is placed in the lifting groove and is pressed against the lifting rod.

The inner side of the shift fork also forms an oblique push surface which is beneficial to move the first connecting rod.

A toggle block is also formed on the connecting rod or the eccentric shaft to facilitate the resetting of the connecting rod and the lever.

The other end of the lever or the bolt forms a slope for guiding the insertion of the bolt.

Beside the rotating shaft of the lever, there is also a protrusion which limits the rotation angle of the lever.

After adopting the above structure, the present invention is a structural improvement of the water inlet valve.

The improved water inlet valve is installed in the water tank. In the initial state, the pin is inserted at one end of the lever under the action of the return spring to position the lever, and at the same time the connecting rod is also positioned. The connecting rod drives the eccentric shaft to rotate and position, and the eccentric shaft drives the sealing water Piston descends and opens the water inlet hole of water-stop surface, and this moment, energy storage spring stores energy.

In normal use without failure, the initial water intake, the buoy drives the swing arm to deflect downward, so that the back pressure pad opens the back pressure hole, and the water flows from the water supply pipe through the water inlet pipe, water inlet hole, top cover and back pressure hole into the water tank. Water intake is realized, and at the same time, part of the water is guided by the water diversion tank to flow through the drip port to form water droplets into the water storage cavity of the water storage tank. When the water level in the water tank rises, the water also enters the lower water cavity of the water storage tank; when the water level of the water tank rises to When the predetermined water stop water level is reached, the buoy drives the swing arm to deflect upwards, so that the back pressure pad closes the back pressure hole again, and the water stop pad generates back pressure to block the water inlet hole on the water stop surface to stop water inflow.

When the drain valve is flushed, the water level of the water tank and the water level of the lower water cavity of the water storage tank will drop. When the water level drops to the gravity of the small buoy greater than the buoyancy, the small buoy will drop and drive the switch plate to close the upper vent of the lower water cavity of the water storage tank. The water level in the lower water chamber continues to drop slowly to form a negative pressure in the lower water chamber. When the negative pressure reaches a certain level, the water in the water storage chamber of the water storage cylinder is sucked into the lower water chamber through the siphon tube until the water in the water storage chamber is sucked dry by the siphon interrupt, the water level of the water tank and the water level of the lower water chamber of the water storage cylinder continue to drop until the flushing is completed; at the same time, when the water level of the water tank drops to the point where the gravity of the buoy is greater than the buoyancy, the buoy drives the swing arm to deflect downward again, so that the back pressure pad opens the back pressure hole, and the back pressure hole is stopped. The pressure relief of the water pad is separated from the water stop surface, and the water inlet hole on the water stop surface is opened to start water intake again, and part of the water flows into the water storage chamber, and then as the water level rises, the water also enters the lower water chamber; when the water level of the water tank rises, the buoy Drive the swing arm to deflect upwards, so that the back pressure pad closes the back pressure hole again, and the water stop pad generates back pressure, blocks the water inlet hole on the water stop surface, and stops the water inlet again.

When the drain valve part or the button is faulty and stuck and cannot be closed, there will be a large water leakage, and the water inlet valve part fault will not stop the water and there will be long-term water overflow. The water flow is guided by the water diversion tank into the water storage chamber of the water storage tank. Because the water inlet valve keeps entering water, the water level in the water storage chamber continues to rise, which drives the float in the water storage chamber to rise accordingly. When the first magnetic element of the float When it is aligned with the second magnetic element of the bolt, the bolt is pulled out from the lever to release the positioning due to the magnetic force, the lever and the connecting rod are deflected under the action of the energy storage spring, the connecting rod drives the eccentric shaft to rotate, and the eccentric shaft drives the water sealing piston to rise and Close the water inlet hole on the water stop surface, so that the water inlet valve stops water intake.

When the drain valve leaks or the sealing part of the water tank and other parts leaks, that is, when there is a small water leak, the counterweight water level of the small floating bucket is relatively consistent with the water level of the water tank, and the small floating bucket cannot produce counterweight, and the small floating bucket always In the floating state, the lower cavity of the water storage tank is always connected to the atmosphere, and its water level line is also relatively consistent with the water tank without negative pressure, and the water in the water storage cavity is not siphoned. After the water level will repeatedly enter the water again, the water in the water storage chamber will continue to accumulate, and the water level in the water storage chamber will continue to rise, driving the float in the water storage chamber to rise accordingly. When the first magnetic element of the float and the second magnetic element of the latch When aligned, the latch is pulled out from the lever by the magnetic force to release the positioning, the lever and the connecting rod are deflected under the action of the energy storage spring, the connecting rod drives the eccentric shaft to rotate, and the eccentric shaft drives the water sealing piston to rise to close the water inlet hole of the water stop surface , so that the water inlet valve stops water intake.

The present invention adds the water sealing piston driven by the eccentric shaft and the connecting rod, lever, latch, float, water storage cylinder and small buoy etc. driven by the eccentric shaft to the existing water inlet valve, so the water inlet valve can not only Guarantee the normal water intake and water stop function, and can stop the water in time when the water tank components fail, avoiding long-term water leakage or long-term overflow, and reducing the waste of water resources.

The present invention will be described in further detail below in conjunction with the accompanying drawings and specific embodiments.

Description of drawings

Fig. 1 is the appearance schematic diagram of the present invention;

Fig. 2 is the three-dimensional exploded view of the plug part of the present invention;

Fig. 3 is a schematic diagram of the cooperation relationship between the latch, the lever and the connecting rod of the present invention;

Fig. 4 is a schematic diagram of the cooperative relationship between the latch and the lever of the present invention;

Fig. 5 is the structural representation of connecting rod and water diversion groove of the present invention;

Fig. 6 is a structural cross-sectional view of a water storage tank and a small buoy according to the present invention;

Fig. 7 is a three-dimensional exploded view of a water storage tank and a small buoy according to the present invention;

Fig. 8 is a positional diagram of the water storage cylinder and the small buoy according to the present invention;

Fig. 9 is a schematic structural view of the water storage tank of the present invention;

Fig. 10 is a structural cross-sectional view of the water storage tank and the small buoy in the water-stop state of the present invention;

Fig. 11 is a structural cross-sectional view of the water inlet chamber in the water-stop state of the present invention;

Fig. 12 is a cross-sectional view of the structure of the water inlet chamber in the normal state of the present invention.

Label description:

Water inlet pipe 1 Water inlet chamber 10 Inner boss 11

Water-sealing spring 12 Water-stop pad 13 Water-stop surface 14

Inlet hole 15

Top cover 2 Back pressure pad 21 Back pressure hole 22

Swing arm 3 float 31

Sealing water piston 4 Eccentric shaft 41 Seal ring 42

Gasket 43

Water storage tank 5 Water storage chamber 51 Sewer chamber 52

Upper vent 53 Siphon 54 Float 55

The first magnetic element 56 chute 57

Small buoy 6 switch plate 61 upper counterweight chamber 62

Lower buoyancy chamber 63 Communication port 64 Vent port 65

Water diversion groove 7 Drip outlet 71 Small hole 72

Connecting rod 8 The energy storage spring 80 The first connecting rod 81

Second connecting rod 82 Lifting rod 83 Lifting slot 84

Energy storage spring 85 shift block 86

Lever 9 Latch pin 91 Second magnetic element 92

Return spring 93 Shift fork 94 Outside 941

Inner edge 942 Inclined push surface 943 Slope surface 95

Bump 96.

Detailed ways

As shown in Figure 1 and Figure 12, it is a water inlet valve disclosed by the present invention, which consists of a water inlet pipe 1, a top cover 2, a water stop pad 13, a back pressure pad 21, a swing arm 3 and a buoy 31. There is the basic structure of the water inlet valve. The lower end of the water inlet pipe 1 is installed on the water supply pipe of the water tank, and the top cover 2 is installed on the upper end of the water inlet pipe 1. The top cover 2 and the inside of the water inlet pipe 1 form a water inlet chamber 10, and a water inlet hole 15 is formed in the water inlet chamber. The water stop surface 14, the corresponding water inlet hole 15 in the water inlet chamber is installed with a water stop pad 13 located on the water stop surface 14, a back pressure hole 22 is opened on the top cover 2, the middle section of the swing arm 3 is pivotally arranged on the top cover 2, and the swing arm 3 One end of the swing arm 3 is directly facing the back pressure hole 22 and a back pressure pad 21 is installed, and the other end of the swing arm 3 is connected with the adjusting rod of the buoy 31, and a seal for ensuring watertightness is provided between each component. In use, when the water level of the water tank drops, the buoy 31 falls under the action of gravity, which drives the swing arm 3 to deflect, the back pressure pad 21 opens the back pressure hole 22, and the water flows from the water supply pipe through the water inlet pipe 1, the water inlet hole 15, the top cover 2 and The back pressure hole 22 enters the water tank to realize water inflow. When the water level of the water tank rises, the buoyancy effect of the buoyancy 31 rises, driving the swing arm 3 to deflect, so that the back pressure pad 21 closes the back pressure hole 22, and water cannot flow from the back of the top cover 2. Pressure hole 22 enters in the water tank, and water-stop pad 13 produces back pressure and deforms and seals the water inlet hole 15 on the water-stop surface 14, realizes stopping water inlet.

The improvement point of the present invention is:

As shown in FIG. 11 and FIG. 12 , in the water inlet chamber 10 formed inside the water inlet pipe 1 and the top cover 2 , a water sealing piston 4 and an eccentric shaft 41 are installed below the water stop pad 13 . One end of the eccentric shaft 41 is inserted on the water sealing piston 4 and the other end protrudes out of the water inlet chamber 10 in a sealed shape. The so-called sealed shape means that the eccentric shaft 41 and the opening of the water inlet chamber 10 are in a sealed shape, such as this An embodiment is that a sealing ring 42 is provided between the eccentric shaft 41 and the opening of the water inlet cavity 41 . The water sealing piston 4 is driven by the eccentric shaft 41 to move up and down in the axial direction to close the water inlet hole 15 on the water stop surface 14 or open the water inlet hole 15 on the water stop surface 14 . Wherein, the water sealing piston 4 can be directly driven by the eccentric shaft 41 to seal the water inlet 15, and the water sealing piston 4 can also be indirectly driven by the eccentric shaft 41 to seal the water inlet 15 as shown in this embodiment, that is, the eccentric shaft 41 rotates to seal the water inlet 15. The water piston 4 moves upwards to give way, and the water sealing piston 4 is pushed upward to seal the water inlet 15 by the hydraulic pressure, and the water sealing piston 4 can also be driven by the eccentric shaft 41 to seal the water inlet 15 in other similar ways, which is not described herein. List them one by one. In order to make the water-stopping effect better, this embodiment is further provided with a sealing gasket 43 above the water-sealing piston 4, or an inner boss 11 is further formed on the top of the water inlet pipe 1, and a water-sealing spring 12 is installed on the inner boss 11. , the upper end of the sealing water spring 12 is against the below of the water sealing piston 4 and the lower end of the sealing water spring 12 is against the inner boss 11 . In this embodiment, when the eccentric shaft 41 deflects, as shown in Figure 12, under normal conditions, the eccentric shaft 41 cooperates with the water sealing piston 4 with its long diameter, and the water sealing piston 4 descends, compressing the water sealing spring 12, and opening the water sealing surface The water inlet hole 15 on 14, as shown in Figure 11, in the water-stop state, the eccentric shaft 41 cooperates with the water-sealing piston 4 with a short diameter, and the water-sealing piston 4 rises under the action of the water-sealing spring 12, and seals the water-stop surface 14 The water inlet hole 15 on.

As shown in FIGS. 6 to 10 , a water storage cylinder 5 is fixedly installed outside the water inlet pipe 1 . The upper part of the water storage cylinder 5 is a water storage chamber 51, and the top of the water storage chamber 51 is open. And the bottom of the water storage cylinder 5 is a lower water cavity 52, and the lower water cavity 52 has an upper vent 53 and a lower water inlet (in this embodiment, an opening is directly formed). A siphon tube 54 is installed in the water storage chamber 51 , one end of the siphon tube 54 is close to the bottom of the water storage chamber 51 and the other end passes through the bottom of the water storage chamber 51 to communicate with the lower water chamber 51 . A float 55 is also placed in the water storage cavity 51 , and a first magnetic element 56 is installed on the top of the float 55 .

As shown in Figures 2 to 9, a small buoy 6 is installed outside the water storage cylinder 5 in a liftable manner, and the upper vent 53 of the small buoy 6 corresponding to the lower water chamber 52 has a switch plate 61 (Figures 6 to 9). As the small buoy 6 rises, the switch plate 61 can open the upper vent 53 , and as the small buoy 6 descends, the switch plate 61 can close the upper vent 53 . In this embodiment, a chute 57 is formed outside the side wall of the water storage cylinder 5, and the upper vent 53 is located in the chute 57. The small buoy 6 has an upper counterweight chamber 62 and a lower buoyancy chamber 63, and the upper counterweight chamber 62 is slidably arranged. In the chute 57, the small buoy 6 can be lifted and lowered, and the communication port 64 is offered below the outer side wall of the upper counterweight chamber 62, and the upper corresponding vent 53 forms the switch plate 61 on the inner side wall of the upper counterweight cavity 62, in order to make the switch plate 61 To better close the upper vent 53, the switch plate 61 is designed to be inclined toward the upward vent 53. In order to better open the upper vent 53, a vent 65 is formed below the switch plate 61, and the lower buoyancy chamber 63 is located at Below the water storage cylinder 5. Of course, the small buoy 6 can also be in other specific structures, as long as the opening and closing of the upper vent 53 can be realized when the water level rises or falls. For example, the small buoy is located at the middle and lower part of the water storage tank, which can save the upper counterweight cavity of the present embodiment, and can also drive the switch plate to cooperate with the upper air vent to realize opening or closing.

As shown in FIGS. 5 and 9 , a water diversion groove 7 is also formed on the periphery of the top cover 2 , and the drip opening 71 of the water diversion groove 7 faces the water storage chamber 51 of the water storage cylinder 5 . The water diversion groove 7 can specifically introduce water through small holes 72 . In order to control the passing speed of water droplets, a sponge can also be loaded into the water diversion groove 7.

As shown in FIGS. 1 to 10 , a connecting rod 8 , a lever 9 and a latch 91 are installed outside the water inlet pipe 1 and the top cover 2 . One end of the connecting rod 8 is connected to one end of the lever 9 and the other end is fixed on the other end of the eccentric shaft 41. The connecting rod 8 or the lever 9 is provided with an energy storage spring 80, and the other end of the lever 9 is provided in a pluggable manner. There is a plug 91, the corresponding first magnetic element 56 is installed on the plug 91 and the second magnetic element 92 (the first magnetic element 56 and the second magnetic element 92 are elements that can be magnetically adsorbed, and both can adopt magnets, or one can be a magnet. The other is an iron piece that can be absorbed by a magnet, etc.), the second magnetic element 92 cooperates with the first magnetic element 56 to control the bolt 91 to be pulled out from the lever 9 to remove the positioning of the lever 9, and a return spring is also installed on the bolt 91 93, by means of the back-moving spring 93, the latch 91 can be reset and reinserted on the lever 9 so that the lever 9 is positioned. For a more balanced and smooth transmission effect, a shift fork 94 is formed at one end of the lever 9 in this embodiment. The outer side 941 of the shift fork 94 is short and the inner side 942 is long. The connecting rod 8 is composed of a first connecting rod 81 and a second connecting rod 82 One end of the first connecting rod 81 is inserted in the shift fork 94 and the other end is pivotally connected to one end of the second connecting rod 82 , and the inner edge 942 of the shift fork 94 further forms an oblique angle that is beneficial for moving the first connecting rod 81 . The push surface 943, the other end of the second connecting rod 82 is fixed on the other end of the eccentric shaft 41, the first connecting rod 81 also extends to form a lifting rod 83, and the lifting rod 83 is arranged in the lifting groove 84 formed outside the top cover 2 , the energy storage spring 85 is placed in the lifting groove 84 and is against the lifting rod 83 . Wherein, the outer edge 941 of the shift fork is designed to be short in order to facilitate the first connecting rod 81 to move the lever 9 and is not limited by the shift fork 94 to ensure sufficient travel of the first connecting rod 81, while the inner edge 942 is designed to be long for convenience. After the failure is removed, the first connecting rod 91 can easily push the lever 9 to reset. A toggle block 86 is also formed on the second connecting rod 82 or the eccentric shaft 41 to facilitate the resetting of the toggle connecting rod 8 and the lever 9 . The other end of the lever 9 (or the bolt 91 ) forms a slope 95 for guiding the insertion of the bolt 91 . Beside the rotating shaft of the lever 9, a protrusion 96 that limits the rotation angle of the lever 9 is also provided.

The present invention is installed in the water tank, under the initial state, as shown in Figure 2 to Figure 9, the latch 91 is inserted in one end of the lever 9 under the action of the return spring 93 to position the lever 9, while the connecting rod 8 is also positioned, the connecting rod 8 Drive the eccentric shaft 41 to rotate and position. As shown in FIG. 12 , the eccentric shaft 41 drives the water sealing piston 4 to descend to open the water inlet hole 15. At this time, the energy storage spring 80 stores energy.

In normal use without failure, the initial water intake causes the buoy 31 to descend under the action of gravity, which drives the swing arm 3 to deflect, so that the back pressure pad 21 opens the back pressure hole 22, and water flows from the water supply pipe through the water inlet pipe 1 and the water inlet hole 15. The top cover 2 and the back pressure hole 22 enter the water tank to realize water intake. At the same time, part of the water is guided by the water diversion groove 7 to flow through the drip port 71 to form water droplets, and then drip into the water storage cavity 51 of the water storage cylinder 5. The water tank After the water level rises, the water also enters the lower water chamber 52 of the water storage cylinder 5. In this embodiment, the water also enters the upper counterweight chamber 62 of the small buoy 6 through the communication port 64; And rise thereupon, drive swing arm 3 to deflect, make back pressure pad 21 close back pressure hole 22 again, water can't enter in the water tank from back pressure hole 22, and water stop pad 13 produces back pressure and blocks the water inlet of water stop surface 14 Hole 15 realizes water stop.

When the drain valve flushes, the water level of the water tank and the water level of the lower water chamber 52 of the water storage cylinder 5 will drop, and the water level of the upper counterweight chamber 62 of the small buoy 6 in the present embodiment will also rise slowly. , the small buoy 6 falls rapidly and drives the switch plate 61 downward to close the upper vent 53 of the lower water chamber 52, and the water level of the lower water chamber 52 continues to slowly drop to form a negative pressure in the lower water chamber 52. When the negative pressure reaches a certain level, the siphon 54, the water in the water storage chamber 51 is sucked in the lower water chamber 52, until the water in the water storage chamber 51 is sucked dry and the siphon is interrupted, the water level of the water tank and the water level of the lower water chamber 52 continue to decline until flushing is completed; at the same time, the water level of the water tank drops to When the gravity of the buoy 31 is greater than the buoyancy, the buoy 31 drives the swing arm 3 to deflect again, so that the back pressure pad 21 opens the back pressure hole 22, the pressure relief of the water stop pad 13 is separated from the water stop surface 14, and the water inlet hole 15 is opened to realize water intake again. At the same time, part of the water is guided by the water guide groove 7 and flows into the water storage chamber 51, and the water also enters the lower water chamber 52 and the upper counterweight chamber 62; when the water level of the water tank rises to the right position, the buoy 31 drives the swing arm 3 to deflect, and the back pressure pad 21 Close the back pressure hole 22 again, and the water stop pad 13 generates back pressure, blocks the water inlet hole 15, and realizes water stop.

When the drain valve part or the button fails to close and there is a large water leakage, or the water inlet valve part fails and cannot stop the water and overflows for a long time, or there are other faults in the internal components of the water tank that cause water leakage, the water inlet valve will always be on. In the state of water intake, part of the water is still guided by the water diversion groove 7 and flows into the water storage chamber 51. Because the water inlet valve has been entering water, the water level in the water storage chamber 51 continues to rise, driving the float 55 in the water storage chamber 51 to follow After rising, when the first magnetic element 56 of the float 55 is aligned with the second magnetic element 92 of the latch 91, as shown in Figure 10, the latch 91 is pulled out from the lever 9 by the magnetic force to release the positioning of the lever 9, and the latch 91 compresses the return spring 93, and the lever 9 and the connecting rod 8 deflect under the action of the energy storage spring 80 (in this embodiment, the energy storage spring 80 pushes the lifting rod 83 downward, so that the first connecting rod 81 goes down, and the first connecting rod 81 Cooperate with shift fork 94 to drive lever 9 to deflect, first connecting rod 81 also drives second connecting rod 82 to deflect), connecting rod 8 (this embodiment is specifically second connecting rod 82) drives eccentric shaft 41 to rotate, as shown in Figure 11 As shown, the eccentric shaft 41 rotates to form a space for the water sealing piston 4 to rise, and the water sealing piston 4 rises to seal the water inlet hole 15 under the effect of hydraulic pressure, so that the water inlet valve stops water.

When the drain valve leaks or the sealing part of the water tank and other parts leaks, that is, when there is a small water leak, the counterweight water level of the small floating bucket 6 is relatively consistent with the water level of the water tank, and the small floating bucket 6 cannot produce counterweight and is always at the same position. In the floating state, the lower cavity 52 of the water storage tank 5 is always connected to the atmosphere and its water level line is also relatively consistent with the water tank without negative pressure, and the water in the water storage cavity 51 is not siphoned. After leaking to a certain water level and repeated water inflow, the water in the water storage chamber 51 is continuously accumulated, and the water level in the water storage chamber 51 is constantly rising, which drives the float 55 in the water storage chamber 51 to rise thereupon. When the magnetic element 56 is aligned with the second magnetic element 92 of the latch 91, the latch 91 is pulled out from the lever 9 to release the positioning due to the magnetic force, the lever 9 and the connecting rod 8 are deflected under the action of the energy storage spring 80, and the connecting rod 8 drives the eccentric The shaft 41 rotates, and the eccentric shaft 41 drives the sealing water piston 4 to rise and close the water inlet 15, so that the water inlet valve stops water intake.

After the fault in the water tank is solved, overcome the magnetic force of the first magnetic element 56 and the second magnetic element 2, the float 55 is taken off from the latch 91, and then the toggle block 86 is moved to make the first connecting rod 81 and the second connecting rod 82 and the lever 9 reset, the energy storage spring 80 stores energy again, and the eccentric shaft 41 also resets, driving the water sealing piston 4 to move downward to open the water inlet 15, and the water inlet valve returns to a normal state, as shown in Fig. 2 to Fig. 9 .

The above-mentioned embodiments and drawings do not limit the form and style of the product of the present invention, and any appropriate changes or modifications made by those skilled in the art should be considered as not departing from the patent scope of the present invention.

Claims (10)

1. a water intaking valve comprises water inlet pipe, top cover, waterstop pad, back pressure pad, swing arm and floating drum and forms; It is characterized in that: in the inner intake antrum that forms of water inlet pipe and top cover, be positioned at waterstop pad below water shutoff piston and eccentric shaft also are installed; One end of eccentric shaft interts on the water shutoff piston and the other end is sealed shape and stretches out outside the intake antrum, and the water shutoff piston is driven the inlet opening that moves up and down vertically and seal or open the sealing face by eccentric shaft; Outside at water inlet pipe also fixedly mounts water storage cylinder; To be storage chamber and bottom be water cavity down on the top of water storage cylinder, and the open top of storage chamber, following water cavity have upper vent and following water inlet; Syphon is installed in the storage chamber; A siphonal end is pressed close at the bottom of the chamber of storage chamber and the other end is communicated with following water cavity at the bottom of passing the chamber of storage chamber, also puts into float in the storage chamber, and first magnetic element is installed at the top of float; Keg buoy is installed with liftable mode in outside in water storage cylinder, and the corresponding upper vent of water cavity down has the switchboard that can go up and down to open or close upper vent with keg buoy on the keg buoy; Periphery at top cover also forms gutter, and the water dropping openings of gutter is over against storage chamber; Go back installing connecting rods, lever and latch in the outside of water inlet pipe and top cover; One end of connecting rod is connected on the end of lever and the other end is fixed on the other end of eccentric shaft; Connecting rod or lever are provided with energy-stored spring; But the other end of lever is provided with latch with pluggable mode, second magnetic element that the corresponding first magnetic element installation and control latch is extracted on the latch and the back-moving spring that makes latch reset and insert.

2. a kind of water intaking valve as claimed in claim 1 is characterized in that: be provided with sealing ring between the perforate of said eccentric shaft and intake antrum; The top of water shutoff piston is provided with sealing mat.

3. a kind of water intaking valve as claimed in claim 1 is characterized in that: the sponge of control water droplet through speed is housed in the said gutter.

4. a kind of water intaking valve as claimed in claim 1 is characterized in that: inner convex platform is formed on the top of said water inlet pipe, and the water shutoff spring is installed on the inner convex platform, and the upper end of water shutoff spring is against the below of water shutoff piston and the lower end of water shutoff spring is against on the inner convex platform.

5. a kind of water intaking valve as claimed in claim 1 is characterized in that: the sidewall profile of said water storage cylinder becomes chute, and upper vent is arranged in chute; Keg buoy has last counterweight chamber and following buoyancy cavity, and last counterweight chamber is slidingly arranged in the chute of water storage cylinder, and connected entrance is offered in the lateral wall below in last counterweight chamber; The corresponding upper vent in inside wall top in last counterweight chamber forms switchboard; Switchboard up-draught mouth tilts, and the below of switchboard forms leakage port, and following buoyancy cavity is positioned at the below of water storage cylinder.

6. a kind of water intaking valve as claimed in claim 1; It is characterized in that: an end of said lever forms shift fork; Short and the interior length of side in the outside of shift fork, connecting rod is made up of first connecting rod and second connecting rod, and an end of first connecting rod is plugged in the shift fork and the other end is articulated on the end of second connecting rod; The other end of second connecting rod is fixed on the other end of eccentric shaft; Also extend to form elevating lever on the first connecting rod, elevating lever is arranged in the outside up-down groove that forms of top cover, and energy-stored spring is placed in the up-down groove and is against on the elevating lever.

7. a kind of water intaking valve as claimed in claim 6 is characterized in that: the inner edge of said shift fork also forms and is beneficial to the inclined thrust surface of stirring first connecting rod.

8. a kind of water intaking valve as claimed in claim 1 is characterized in that: also form on said connecting rod or the core shift axle and be convenient to stir the shifting block that connecting rod and lever reset.

9. a kind of water intaking valve as claimed in claim 1 is characterized in that: form domatic that the guiding latch inserts on the other end of said lever or the latch.

10. a kind of water intaking valve as claimed in claim 1 is characterized in that: the other protruding grain that also is provided with restriction lever rotational angle of the rotating shaft of said lever.

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