CN218818341U - Flushing valve - Google Patents

Abstract

The utility model discloses a flushing valve, which comprises a valve body, a piston mechanism and a control device; the valve body is provided with a water storage cavity, a water inlet flow channel, a water outlet and a piston cavity, and the water inlet flow channel, the water outlet and the piston cavity are all communicated with the water storage cavity; the piston mechanism is arranged in the piston cavity and comprises a flushing piston and a water control piston, one end of the flushing piston is opposite to the water outlet, and the water control piston is used for adjusting the communication state of the piston cavity; the control end of the control device is positioned in the piston cavity, and the control device is used for adjusting the position of the water control piston in the piston cavity so as to adjust the water flow direction in the piston cavity to control the flushing piston to close or connect the water outlet. The utility model discloses can effectively shorten the distance from the rivers that the delivery port dashes out, the rivers that wash by water when realizing washing by water from the delivery port are independent of the piston chamber by controlling means control, can effectively improve water flow and play water pressure, and it is effectual to wash by water.

Description

Flushing valve

Technical Field

The utility model relates to a flushometer field, in particular to flushometer.

Background

The flushing valve is a valve structure for controlling water outlet effect. Along with the continuous progress of society, the automatic demand of product is higher and higher, to the bath structure, for improving the degree of automation of washing by water, in the correlation technique, set up the switch that the solenoid valve was used as the control bath, when carrying out the bath control through the solenoid valve, the solenoid valve is direct connection and acts on the bath runner, be subject to the size of solenoid valve, need set up the control that small-size runner realized the bath for the solenoid valve, when rivers wash by water after these small-size runners, can appear that the bath flow is little, the bath pressure is not enough problem, it is not good to wash by water the effect.

SUMMERY OF THE UTILITY MODEL

The utility model discloses aim at solving one of the technical problem that exists among the prior art at least. Therefore, the utility model provides a flush valve through the break-make of piston mechanism hierarchical control runner, can shorten the distance of going into water and keep the radial dimension of runner to can effectively improve water flow and play water pressure.

The embodiment of the utility model provides a flushing valve, which comprises a valve body, a piston mechanism and a control device; the valve body is provided with a water storage cavity, a water inlet flow channel, a water outlet and a piston cavity, and the water inlet flow channel, the water outlet and the piston cavity are all communicated with the water storage cavity; the piston mechanism is arranged in the piston cavity and comprises a flushing piston and a water control piston, one end of the flushing piston is opposite to the water outlet, and the water control piston is used for adjusting the communication state of the piston cavity; the control end of the control device is positioned in the piston cavity, and the control device is used for adjusting the position of the water control piston in the piston cavity so as to adjust the water flow direction in the piston cavity to control the flushing piston to close or connect the water outlet.

According to the utility model discloses an above-mentioned embodiment has following beneficial effect at least: set up the piston mechanism of hierarchical control runner break-make, adjust the position of accuse water piston in the piston chamber through controlling means, the connected state in piston chamber can be adjusted to accuse water piston after the regulation position, and the piston chamber can realize corresponding rivers direction under the connected state that corresponds, thereby utilize water pressure drive bath piston to break away from or block up the delivery port, and then realize forming the state of closing or putting through between delivery port and the retaining chamber, compare in prior art rivers need just can export through other runners and realize washing by water, the embodiment is through setting up the equal lug connection retaining chamber of delivery port and income water runner for the rivers of washing by water can directly reach the delivery port through retaining chamber after the income water runner gets into, can effectively shorten the distance of the rivers that follow the delivery port is washed out, and the flow of washing by water mainly is decided by the minimum radial dimension of delivery port and income water runner, and the rivers that the follow the delivery port when realizing washing by water are independent of piston chamber by controlling means control, can effectively improve water flow and play water pressure, and wash by water effectually.

According to the utility model discloses a some embodiments, the piston chamber includes towards the water cavity and accuse water cavity, towards the water cavity and accuse water cavity all with retaining chamber intercommunication, towards the water cavity is located to the bath piston, accuse water cavity is located to the accuse water piston, controlling means is used for adjusting the inside rivers direction of accuse water cavity to adjust the position of accuse water piston in the piston chamber, accuse water piston is used for adjusting towards the rivers direction between water cavity and the accuse water cavity, close or put through the delivery port through rivers drive towards the water piston.

According to some embodiments of the utility model, the bath chamber is including bath activity chamber, press and push away the runner and draw the runner, the accuse water chamber is including accuse water activity chamber and normal water runner, bath activity chamber is located to the bath piston, accuse water activity chamber is located to the accuse water piston, it connects bath activity chamber and accuse water activity chamber respectively to press the both ends of pushing away the runner, draw the both ends of carrying the runner to connect bath activity chamber and accuse water activity chamber respectively, retaining chamber and accuse water activity chamber are connected respectively to the both ends of normal water runner, the accuse water piston is equipped with the water conservancy diversion bank of cells, the water conservancy diversion bank of cells is used for pushing away the runner or drawing the runner with normal water runner intercommunication pressure, so that the water drive in the bath activity chamber washes water piston and blocks up or breaks away from the delivery port.

According to the utility model discloses a some embodiments, accuse water cavity still includes accuse water runner, accuse water movable cavity and normal water runner are connected respectively to the both ends of accuse water runner, piston mechanism still includes accuse water spring, accuse water piston and valve body are connected respectively to the both ends of accuse water spring, so that the trend that the formation of accuse water piston is close to the motion of accuse water runner and accuse water movable cavity junction, controlling means's control end is located accuse water runner, controlling means is used for controlling the intercommunication state between accuse water runner and the normal water runner, so that adjust the position of accuse water piston in accuse water movable cavity.

According to the utility model discloses a some embodiments, the guiding gutter group pushes away the groove and draws the groove including pressing, presses to push away the groove and draws the groove all around the circumference setting of accuse water piston, draws the groove to be used for intercommunication normal water runner and draws the runner, presses to push away the groove and is used for intercommunication normal water runner and presses to push away the runner.

According to the utility model discloses a some embodiments, the flushometer still includes the water pump, and the water pump is connected between income water runner and outside water supply, and the water pump is used for carrying the rivers pressurization back of outside water supply input to the retaining chamber through the passageway of intaking.

According to the utility model discloses a some embodiments, delivery port, piston chamber, piston mechanism and controlling means all are equipped with two sets ofly, and two controlling means are used for controlling two accuse water pistons respectively and correspond the position in piston chamber to adjust two piston intracavity portions's rivers direction respectively and drive two bath pistons respectively through rivers and close or put through the delivery port that corresponds.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

FIG. 1 is a schematic perspective view of a flush valve according to an embodiment of the present invention;

FIG. 2 is a schematic top view of a flush valve according to an embodiment of the present invention;

FIG. 3 isbase:Sub>A schematic cross-sectional view taken along A-A of FIG. 2 during flush control of the flush valve according to an embodiment of the present invention;

FIG. 4 isbase:Sub>A schematic cross-sectional view taken along line A-A of FIG. 2 after flush control of the flush valve according to an embodiment of the present invention;

fig. 5 is a schematic view of an internal perspective structure of a partial valve body in a flush valve according to an embodiment of the present invention.

Reference numerals:

the water valve comprises a valve body 100, a water storage cavity 110, a water inlet channel 120, a water outlet 130, a flushing cavity 140, a flushing movable cavity 141, a pressing and pushing channel 142, a pulling and lifting channel 143, a water control cavity 150, a water control movable cavity 151, a normal water channel 152, a water control channel 153 and an unloading channel 160;

the piston mechanism 200, a flushing piston 210, a piston body 211, a push rod 212, a blocking block 213, a water control piston 220, a pressing and pushing groove 221, a pulling and lifting groove 222, a water control spring 230 and a flushing spring 240;

a control device 300;

a water pump 400.

Detailed Description

In the description of the present invention, unless there is an explicit limitation, the words such as setting, installation, connection, etc. should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above words in combination with the specific contents of the technical solution. In the description of the present invention, a plurality of meanings are one or more, a plurality of meanings are two or more, and the terms greater than, smaller than, exceeding, etc. are understood as excluding the number, and the terms greater than, lower than, within, etc. are understood as including the number. Furthermore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.

A flush valve, also called a flush valve, is a valve structure for controlling the effect of water discharge. The direct flushing valve is one of flushing valves, is used for being directly connected with an outlet of a water channel and directly controlling water outlet of the water channel, and can save the arrangement of a water tank.

Along with the continuous progress of society, the automatic demand of product is more and more high, to the structure of washing by water, for improving the degree of automation of washing by water, in the correlation technique, set up the switch that the solenoid valve was used as control bath by water, when control of washing by water through the solenoid valve, be subject to the size of solenoid valve, need reduce the size of runner and for it sets up corresponding runner structure in order to control out water for the solenoid valve, because rivers need just can export through each runner in proper order and be used for washing, water flow is decided by the minimum size of each runner, and because rivers can cause loss of pressure through complicated runner structure, the play water flow of this kind of flushometer in the correlation technique is little, water pressure is not enough, the effect of washing by water is not good.

The flush valve of the present invention is described below with reference to fig. 1 to 5, and the flush valve can shorten the water inlet path and maintain the radial dimension of the flow passage by controlling the on/off of the flow passage in stages through the piston mechanism 200, so that the water outlet flow rate and the water outlet pressure can be effectively increased.

Referring to fig. 1 to 5, an embodiment of the present invention describes a flush valve, including a valve body 100, a piston mechanism 200, and a control device 300; the valve body 100 is provided with a water storage cavity 110, a water inlet flow passage 120, a water outlet 130 and a piston cavity, the water inlet flow passage 120, the water outlet 130 and the piston cavity are all communicated with the water storage cavity 110, and the water inlet flow passage 120 is used for connecting an external water supply source; the piston mechanism 200 is arranged in the piston cavity, the piston mechanism 200 comprises a flushing piston 210 and a water control piston 220, and one end of the flushing piston 210 is opposite to the water outlet 130 so that the flushing piston 210 can block and intercept the water outlet 130; the control end of the control device 300 is located in the piston cavity, the control device 300 is configured to adjust the position of the water control piston 220 in the piston cavity, and control the flushing piston 210 to close or connect the water outlet 130 in the water flow direction in the piston cavity, that is, the water control piston 220 is configured to adjust the communication state of the piston cavity, so as to drive the flushing piston 210 to move closer to or away from the water outlet 130 by the water pressure, and further control the water outlet 130 to close or connect, wherein the closing is to cut off the water outlet 130 and the water storage cavity 110 to form an effect of closing the water outlet, and the connecting is to connect the water outlet 130 and the water storage cavity 110 to form an effect of flushing the water outlet.

The embodiment of the present invention provides a piston mechanism 200 with a hierarchical control channel, wherein the position of a water control piston 220 in a piston cavity is adjusted by a control device 300, the communication state of the piston cavity can be adjusted by the water control piston 220 after the position is adjusted, and the piston cavity can realize corresponding water flow guidance in the corresponding communication state, so that a water pressure is used to drive a flushing piston 210 to break away from or block a water outlet 130, thereby realizing a state of closing or connecting between the water outlet 130 and a water storage cavity 110, compared with the prior art in which water flow needs to be output through other channels to realize flushing, the embodiment of the present invention provides a water outlet 130 and a water inlet channel 110 which are both directly connected to the water storage cavity 120, so that water flow for flushing can directly reach the water outlet 130 through the water storage cavity 110, thereby effectively shortening the path of water flow flushed from the water outlet 130, and the flow of flushing is mainly determined by the minimum radial dimension of the water outlet 130 and the water inlet channel 120, and the water flow when flushing is realized flushing is independent of the piston cavity controlled by the control device 300, i.e. the water flow can not pass through the internal structure of the piston cavity controlled by the control device 300, thereby effectively improving the water outlet flow and the flushing pressure, and the flushing effect is good.

In the related art, the flush valve is flushed by pressure difference after pressure difference is generated in the unloading cavity by utilizing the water pressure of the flush valve, so that flushing is realized. The embodiment of the utility model provides a flushometer that describes sets up piston mechanism 200, and the switch of flushometer passes through controlling means 300 active control, can effectively improve the problem that water pressure is not enough and can't break away the valve, in addition, because the switch of flushometer is not directly through water pressure break away, can also show to reduce the valve closed incomplete and the probability that leads to the hourglass water.

It can be understood that the piston cavity includes a flushing cavity 140 and a water control cavity 150, the flushing cavity 140 and the water control cavity 150 are both connected to the water storage cavity 110, the flushing piston 210 is disposed in the flushing cavity 140, the flushing piston 210 can be driven to perform piston motion in the flushing cavity 140, the water control piston 220 is disposed in the water control cavity 150, the water control piston 220 can be driven to perform piston motion in the water control cavity 150, the control device 300 is used for adjusting the communication state of the water control cavity 150, the water flow state of the water control cavity 150 is changed, and further the position of the water control piston 220 in the piston cavity is adjusted, and the water control piston 220 is used for adjusting the communication state between the flushing cavity 140 and the water control cavity 150, so that the flushing piston 210 moves close to or far away from the water outlet 130 under the action of hydraulic drive, and further the connection between the water outlet 130 and the water storage cavity 110 is adjusted to be closed or connected. The piston mechanism 200 is provided with the water control piston 220 and the flushing piston 210 in a grading manner, and the water control piston 220 and the flushing piston 210 are driven by mainly using the input water flow pressure as a driving force, so that the control burden of the control device 300 can be reduced, the control cost is low, and the piston mechanism is energy-saving and environment-friendly.

In the related art, the flow passage structure of the flush valve is complicated in zigzag and high in processing cost, the pressure of water flow flowing through the flush valve is consumed, and the pressure of the output water flow cannot form corresponding power.

It can be understood that the flushing cavity 140 includes a flushing movable cavity 141, a pressing and pushing flow channel 142 and a pulling flow channel 143, the water control cavity 150 includes a water control movable cavity 151 and a normal water flow channel 152, two ends of the pressing and pushing flow channel 142 are respectively connected to the flushing movable cavity 141 and the water control movable cavity 151, the flushing piston 210 is disposed in the flushing movable cavity 141, the water control piston 220 is disposed in the water control movable cavity 151, the flushing piston 210 and the water control piston 220 can respectively perform piston movement in the flushing movable cavity 141 and the water control movable cavity 151, two ends of the pulling flow channel 143 are respectively connected to the flushing movable cavity 141 and the water control movable cavity 151, two ends of the normal water flow channel 152 are respectively connected to the water storage cavity 110 and the water control movable cavity 151, the water control piston 220 is provided with a flow guide groove set for communicating the normal water flow channel 152 with the pressing and pushing flow channel 142 or the pulling flow channel 143, so that the water in the flushing movable cavity 141 drives the flushing piston 210 to block or separate from the water outlet 130. The push flow channel 142 and the pull flow channel 143 are straight flow channels, and the pressure of water flowing through can be effectively maintained through a simple flow channel structure, so that the stability of driving action of the water flow on the flushing piston 210 is improved, and the reliability of lifting movement of the flushing piston 210 driven by the water flow pressure is high. The water control piston 220 has the following two control states: 1. the water control piston 220 is positioned at one end of the water control movable cavity 151, the diversion trench group is communicated with the normal water flow channel 152 and the pressure push flow channel 142, the connection between the normal water flow channel 152 and the pulling flow channel 143 is cut off by the water control piston 220, water entering from water inflow sequentially passes through the water storage cavity 110, the normal water flow channel 152, the diversion trench group and the pressure push flow channel 142 and then reaches the flushing movable cavity 141, and the flushing piston 210 is pushed to move close to the water outlet 130 until the flushing activity blocks and shuts off the water outlet 130; 2. the water control piston 220 is located at the other end of the water control movable cavity 151, the diversion trench group is communicated with the normal water flow channel 152 and the pulling flow channel 143, the connection between the normal water flow channel 152 and the pressing and pushing flow channel 142 is cut off by the water control piston 220, water entering from water inflow circulation sequentially passes through the water storage cavity 110, the normal water flow channel 152, the diversion trench group and the pulling flow channel 143 and then reaches the flushing movable cavity 141, and the flushing piston 210 is pushed to move away from the water outlet 130 until the flushing movable is separated from the water outlet 130 to realize flushing.

Referring to fig. 4 and 5, fig. 4 is a state diagram of the flushing piston 210 before being driven by water pressure after the position of the water control piston 220 is adjusted, and fig. 5 is a structural diagram of the flushing piston 210 after being driven by water pressure to form a corresponding control effect on the water outlet 130.

In order to improve the smoothness and reliability of the control action, it can be understood that the water control cavity 150 further includes a water control flow channel 153, two ends of the water control flow channel 153 are respectively connected to the water control movable cavity 151 and the normal water flow channel 152, the piston mechanism 200 further includes a water control spring 230, two ends of the water control spring 230 are respectively connected to the water control piston 220 and the valve body 100, so that the water control piston 220 forms a trend of moving close to the connection between the water control flow channel 153 and the water control movable cavity 151, a control end of the control device 300 is located in the water control flow channel 153, and the control device 300 is used for controlling the communication state between the water control flow channel 153 and the normal water flow channel 152, so as to adjust the position of the water control piston 220 in the water control movable cavity 151. Wherein, the control device 300 includes an electromagnetic valve, and a driving end of the electromagnetic valve is located in the water control flow passage 153.

It should be noted that, after the flushing piston 210 is controlled to be separated from the water outlet 130 to complete the flushing action, the control device 300 controls to block the connection between the water control channel 153 and the normal water channel 152, under the action of the elastic restoring force of the water control spring 230, the water control piston 220 moves close to the connection between the water control channel 153 and the water control movable cavity 151, at this time, the diversion trench group communicates with the normal water channel 152 and the pressure push channel 142, the high-water-pressure water flows into the water storage cavity 110 from the water inlet channel 120 and diffuses to other channels connected to the water storage cavity 110, part of the water in the water storage cavity 110 reaches the flushing movable cavity 141 through the normal water channel 152, the diversion trench group and the pressure push channel 142, and pushes the flushing piston 210 to move close to the water outlet 130 until the flushing piston 210 blocks the water outlet 130.

It can be understood that the piston mechanism 200 further includes a flushing spring 240, one end of the flushing spring 240 is connected to one side of the flushing piston 210 away from the water outlet 130, and the other end of the flushing spring 240 is connected to the flushing movable cavity 141, so that the flushing piston 210 forms a trend of moving close to the water outlet 130, and the effect of the flushing piston 210 closing and blocking the water outlet 130 can be effectively improved.

It can be understood that the valve body 100 is further provided with an unloading flow channel 160, one end of the unloading flow channel 160 is connected to the water control movable cavity 151, and the other end of the unloading flow channel 160 is connected to the lower portion of the water outlet 130, that is, the other end of the unloading flow channel 160 is located at the side of the water outlet 130 far from the water storage cavity 110, when the water outlet 130 needs to be closed, and the water control spring 230 pushes the water control piston 220 to move downward, the water in the water control movable cavity 151 flows to the lower portion of the water outlet 130 through the unloading flow channel 160 to realize unloading. Similarly, when the water outlet 130 needs to be closed and the flushing spring 240 pushes the flushing piston 210 to move close to the water outlet 130 to block the flushing piston, the water in the flushing movable cavity 141 is driven and guided to the position below the water outlet 130 through the unloading flow channel 160 in the above manner to realize unloading.

It can be understood that the diversion trench group includes a pressing and pushing trench 221 and a pulling trench 222, the pressing and pushing trench 221 and the pulling trench 222 are both disposed around the circumference of the water control piston 220, that is, the pulling and pushing trench and the pulling trench 222 are not connected and are disposed in the circumferential surface of the water control piston 220, when the water outlet 130 needs to be blocked, the control device 300 controls the blocking water control flow channel 153 and the normal water flow channel 152, the water control piston 220 moves close to the connection between the water control flow channel 153 and the water control movable cavity 151 under the thrust of the water control spring 230, at this time, the pressing and pushing trench 221 is used for communicating the normal water flow channel 152 and the pressing and pushing flow channel 142; when the water outlet 130 is needed to be communicated with the water outlet, the control device 300 controls to connect the water control flow passage 153 and the normal water flow passage 152, the water pressure from the water storage cavity 110 enters the water control movable cavity 151 through the water control flow passage 153 to push the water control piston 220 to move away from the connection part of the water control flow passage 153 and the water control movable cavity 151, and at this time, the pulling groove 222 is used for communicating the normal water flow passage 152 and the pulling flow passage 143.

It can be understood that the flushing piston 210 includes a piston body 211, a push rod 212 and a blocking piece 213, the piston body 211 and the blocking piece 213 are fixedly connected to two ends of the push rod 212, the piston body 211 is disposed in the flushing movable cavity 141, the blocking piece 213 is used for blocking the water outlet 130, the push rod 212 is disposed through the flushing movable cavity 141 and the water storage cavity 110, the push-pull flow channel 142 is located on one side of the piston body 211 away from the water outlet 130, the pull-up flow channel 143 is located on one side of the piston body 211 close to the water outlet 130, a connection portion between the push-pull flow channel 142 and the flushing movable cavity 141 is located on one end of a movable path of the piston body 211, and a connection portion between the pull-up flow channel 143 and the flushing movable cavity 141 is located on the other end of the movable path of the piston body 211, so that the push-pull-up flow channel 142 or the pull-up flow channel 143 can form hydraulic pushing forces in two directions on the piston body 211. Wherein, the blocking piece 213 can be set up to the inverted round platform structure, can improve the effect that damps to the jam of delivery port 130 of blocking piece 213.

It should be noted that, after the flushing piston 210 is controlled to be separated from the water outlet 130 to complete the flushing action, and when the flow needs to be stopped, the control device 300 controls to stop the connection between the water control flow channel 153 and the normal water flow channel 152, and under the action of the elastic restoring force of the water control spring 230, the water control piston 220 moves close to the connection between the water control flow channel 153 and the water control movable cavity 151, at this time, the pressure push groove 221 communicates the normal water flow channel 152 and the pressure push flow channel 142, the high-pressure water flow enters the water storage cavity 110 from the water inlet flow channel 120 and diffuses to other channels connected to the water storage cavity 110, after part of the water in the water storage cavity 110 enters the normal water flow channel 152 and the pressure push groove 221, the water flow enters the flushing movable cavity 141 from the pressure push flow channel 142, and the water flow applies pressure to the piston body 211 from the side far from the water outlet 130, thereby pushing the flushing piston 210 to move close to the water outlet 130 until the flushing piston 210 blocks the water outlet 130; after the flushing piston 210 is blocked by the control plug to stop the water outlet 130, and when flushing is needed, the control device 300 drives and controls the communication between the water control channel 153 and the normal water channel 152, water entering from the water inlet channel 120 sequentially passes through the water storage cavity 110, the normal water channel 152 and the water control channel 153 and then enters the water control movable cavity 151, the water control piston 220 is pushed to move away from the connection part between the water control channel 153 and the water control movable cavity 151 under the action of pressure difference, the water control spring 230 is squeezed until the lifting groove 222 is communicated with the normal water channel 152 and the lifting channel 143, high-pressure water flows enter the water storage cavity 110 from the water inlet channel 120 and are diffused to other channels connected with the water storage cavity 110, after part of water in the water storage cavity 110 enters the normal water channel 152 and the lifting groove 222, the water flows into the flushing movable cavity 141 from the lifting channel 143, and the water flows apply pressure to the piston body 211 from the side close to the water outlet 130, so as to push the flushing piston 210 to move away from the water outlet 130 until the piston 210 is completely separated from the water outlet 130, and the action of flushing is realized.

It will be appreciated that the flush valve further includes a water pump 400, the water pump 400 being connected between the inlet channel 120 and an external water supply source, the water pump 400 being adapted to pressurize the water flow for delivery to the reservoir chamber 110 through the inlet channel 120. In the case of insufficient water pressure, the water pump 400 is turned on to increase the water pressure input to the inlet flow passage 120, thereby improving the control of the entire flushing valve and the flushing effect.

The shunt valve is a valve structure for controlling the water outlet effect of the two water paths, and it can be understood that two groups of water outlets 130, piston cavities, the piston mechanism 200 and the control device 300 are provided, and the two control devices 300 are used for respectively controlling the positions of the two water control pistons 220 in the corresponding piston cavities, so as to respectively adjust the water flow directions in the two piston cavities and respectively drive the two flushing pistons 210 to close or connect the corresponding water outlets 130 through the water flow. By arranging two sets of water outlets 130, piston cavities, piston mechanisms 200 and control devices 300, flushing control can be achieved on two different water paths.

The control method of the flush valve is explained as follows:

the flushing valve comprises a valve body 100, a piston mechanism 200 and a control device 300, wherein the valve body 100 is provided with a water storage cavity 110, a water inlet flow channel 120, a water outlet 130 and a piston cavity, the water inlet flow channel 120, the water outlet 130 and the piston cavity are all communicated with the water storage cavity 110, a flushing cavity 140 is connected with a water control cavity 150, the water inlet flow channel 120 is used for connecting an external water supply source, the piston mechanism 200 is arranged in the piston cavity, the piston mechanism 200 comprises a flushing piston 210 and a water control piston 220, one end of the flushing piston 210 is opposite to the water outlet 130, and the control end of the control device 300 is positioned in the piston cavity;

the control method includes, but is not limited to, the following steps: the position of the water control piston 220 in the movable cavity is adjusted by the control device 300, so that the water flow direction inside the piston cavity is adjusted to control the flushing piston 210 to close or connect the water outlet 130.

The piston mechanism 200 for controlling the flow channel to be switched on and off in a grading manner is arranged, the position of the water control piston 220 in the piston cavity is adjusted through the control device 300, the communication state of the piston cavity can be adjusted by the water control piston 220 after the position is adjusted, the piston cavity can drive the flushing piston 210 to be separated from or block the water outlet 130 under the corresponding communication state by utilizing water pressure, and therefore the state of closing or connection between the water outlet 130 and the water storage cavity 110 is achieved, because the water outlet 130 and the water inlet flow channel 120 are both directly connected with the water storage cavity 110, water entering from the water inlet flow channel 120 can directly reach the water outlet 130 through the water storage cavity 110, the path of water flow rushing out from the water outlet 130 can be effectively shortened, the water flow is mainly controlled by the minimum radial size of the water outlet 130 and the water inlet flow channel 120, the water outlet flow and the water outlet pressure can be effectively improved, and the flushing effect is good.

It can be understood that the piston cavity includes a flushing cavity 140 and a water control cavity 150, the flushing cavity 140 includes a flushing movable cavity 141, a pressing and pushing flow channel 142 and a pulling and lifting flow channel 143, the water control cavity 150 includes a water control movable cavity 151, a normal water flow channel 152 and a water control flow channel 153, the flushing piston 210 is disposed in the flushing movable cavity 141, the water control piston 220 is disposed in the water control movable cavity 151, two ends of the pressing and pushing flow channel 142 are respectively connected to the flushing movable cavity 141 and the water control movable cavity 151, two ends of the pulling and lifting flow channel 143 are respectively connected to the flushing movable cavity 141 and the water control movable cavity 151, two ends of the normal water flow channel 152 are respectively connected to the water control movable cavity 110 and the water control movable cavity 151, the water control piston 220 is provided with a flow guide groove set for communicating the normal water flow channel 152 with the pressing and pushing flow channel 142 or the pulling and lifting flow channel 143, the piston mechanism 200 further includes a water control spring 230, two ends of the water control spring 230 are respectively connected to the water control piston 220 and the valve body 100, so that the water control piston 220 forms a tendency of moving near the connection of the water control flow channel 153 and the water control piston 130, and the initial water control piston 130 is located at the water outlet 130;

the position of the water control piston 220 in the movable cavity is adjusted by the control device 300 to adjust the water flow direction inside the piston cavity to control the flushing piston 210 to close or connect the water outlet 130, including but not limited to the following steps:

the water control flow passage 153 is controlled by the control device 300 to be communicated with the normal water flow passage 152, so that the guide groove set is communicated with the pull-up flow passage 143 and the normal water flow passage 152, water entering from the water inlet flow passage 120 enters the flushing movable cavity 141 through the water storage cavity 110, the normal water flow passage 152, the guide groove set and the pull-up flow passage 143, and the flushing piston 210 is pushed to be separated from the water outlet 130.

It can be understood that, after the control device 300 controls the water control flow passage 153 to communicate with the normal water flow passage 152, so that the guide groove set communicates with the pull-up flow passage 143 and the normal water flow passage 152, the water entering from the water inlet flow passage 120 enters the movable flushing chamber 141 through the water storage chamber 110, the normal water flow passage 152, the guide groove set and the pull-up flow passage 143, and pushes the flushing piston 210 to separate from the water outlet 130, the following steps are included, but not limited to:

after the preset time, the control device 300 controls the cut-off water control flow passage 153 and the normal water flow passage 152, under the action of the elastic restoring force of the water control spring 230, the water control piston 220 moves close to the connection between the water control flow passage 153 and the water control movable cavity 151, so that the guide groove set is communicated with the pressure push flow passage 142 and the normal water flow passage 152, water entering from the water inlet flow passage 120 enters the flushing movable cavity 141 through the water storage cavity 110, the normal water flow passage 152, the guide groove set and the pressure push flow passage 142, and pushes the flushing piston 210 to block the water outlet 130 to realize resetting.

It can be understood that the valve body 100 is further provided with an unloading channel 160, one end of the unloading channel 160 is connected to the water control movable cavity 151, and the other end of the unloading channel 160 is connected to the lower part of the water outlet 130, that is, the other end of the unloading channel 160 is located on the side of the water outlet 130 far away from the water storage cavity 110. When the water outlet 130 needs to be blocked, the control device 300 controls the water blocking flow channel 153 and the normal water flow channel 152 to be blocked, in the process that the water control spring 230 pushes the water control piston 220 to move downwards, water in the water control movable cavity 151 flows to the lower part of the water outlet 130 through the unloading flow channel 160 to realize unloading, the guide groove group after the unloading is completed is communicated with the pressure push flow channel 142 and the normal water flow channel 152, water entering from the water inlet flow channel 120 enters the flushing movable cavity 141 through the water storage cavity 110, the normal water flow channel 152, the guide groove group and the pressure push flow channel 142, and the flushing piston 210 is pushed to block the water outlet 130 to realize resetting.

The piston mechanism 200 further includes a flushing spring 240, one end of the flushing spring 240 is connected to one side of the flushing piston 210 far away from the water outlet 130, and the other end of the flushing spring 240 is connected to the flushing movable cavity 141, so that the flushing piston 210 tends to move close to the water outlet 130, and the effect of the flushing piston 210 closing and blocking the water outlet 130 can be effectively improved. When the water outlet 130 needs to be closed, the flushing spring 240 pushes the flushing piston 210 to move close to the water outlet 130 to block the flushing piston, and the water in the flushing movable cavity 141 is guided to the position below the water outlet 130 through the unloading flow passage 160 in the above manner to realize unloading.

It can be understood that the flush valve further includes a water pump 400, and a water outlet of the water pump 400 is connected to the water inlet channel 120;

the control method for the flush valve further includes, but is not limited to, the steps of:

when the water pressure value entering from the water inlet channel 120 is lower than the preset water pressure, the water pump 400 is controlled to pressurize the water flow and deliver the water flow to the water storage cavity 110 through the water inlet channel 120.

Specifically, the step of pressurizing the water pump 400 is performed after the flushing piston 210 is separated from the water outlet 130, so that the water pump 400 provides a high-pressure water flow to the water storage cavity 110 through the water inlet channel 120, and forms a water outlet effect of the high-pressure water flow from the water outlet 130.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims (7)

1. A flush valve, comprising:

the water inlet valve comprises a valve body (100) and a valve body, wherein the valve body is provided with a water storage cavity (110), a water inlet flow channel (120), a water outlet (130) and a piston cavity, the water inlet flow channel (120), the water outlet (130) and the piston cavity are all communicated with the water storage cavity (110), and the water inlet flow channel (120) is used for being connected with an external water supply source;

the piston mechanism (200) is arranged in the piston cavity, the piston mechanism (200) comprises a flushing piston (210) and a water control piston (220), and one end of the flushing piston (210) is opposite to the water outlet (130);

the control end of the control device (300) is positioned in the piston cavity, and the control device (300) is used for adjusting the position of the water control piston (220) in the piston cavity so as to adjust the water flow direction inside the piston cavity to control the flushing piston (210) to close or connect the water outlet (130).

2. The flush valve according to claim 1, wherein the piston chamber comprises a flush chamber (140) and a water control chamber (150), the flush chamber (140) and the water control chamber (150) are both communicated with the water storage chamber (110), the flush piston (210) is disposed in the flush chamber (140), the water control piston (220) is disposed in the water control chamber (150), the control device (300) is configured to adjust a water flow direction inside the water control chamber (150) to adjust a position of the water control piston (220) in the piston chamber, and the water control piston (220) is configured to adjust a water flow direction between the flush chamber (140) and the water control chamber (150) to drive the flush piston (210) to close or open the water outlet (130) by water flow.

3. The flush valve according to claim 2, wherein the flush chamber (140) comprises a flush movable chamber (141), a push flow passage (142) and a pull flow passage (143), the water control chamber (150) comprises a water control movable chamber (151) and a normal water flow passage (152), the flush piston (210) is disposed in the flush movable chamber (141), the water control piston (220) is disposed in the water control movable chamber (151), two ends of the push flow passage (142) are respectively connected to the flush movable chamber (141) and the water control movable chamber (151), two ends of the pull flow passage (143) are respectively connected to the flush movable chamber (141) and the water control movable chamber (151), two ends of the normal water flow passage (152) are respectively connected to the water storage chamber (110) and the water control movable chamber (151), the water control piston (220) is provided with a diversion groove set for communicating the normal water flow passage (152) with the push flow passage (142) or the pull flow passage (143) to allow the flush movable chamber (141) to be driven to block the water outlet (130) or to be separated from the flush movable chamber (141).

4. The flush valve according to claim 3, wherein the water control chamber (150) further comprises a water control flow passage (153), two ends of the water control flow passage (153) are respectively connected with the water control movable chamber (151) and the normal water flow passage (152), the piston mechanism (200) further comprises a water control spring (230), two ends of the water control spring (230) are respectively connected with the water control piston (220) and the valve body (100) so that the water control piston (220) forms a trend of moving close to a connection part of the water control flow passage (153) and the water control movable chamber (151), a control end of the control device (300) is located in the water control flow passage (153), and the control device (300) is used for controlling a communication state between the water control flow passage (153) and the normal water flow passage (152) so as to adjust a position of the water control piston (220) in the water control movable chamber (151).

5. The flush valve of claim 3, wherein the flow guide groove set comprises a pressure push groove (221) and a pull groove (222), the pressure push groove (221) and the pull groove (222) are both arranged around the circumference of the water control piston (220), the pull groove (222) is used for communicating the normal water flow passage (152) and the pull flow passage (143), and the pressure push groove (221) is used for communicating the normal water flow passage (152) and the pressure push flow passage (142).

6. The flush valve of claim 1, further comprising a water pump (400), wherein the water pump (400) is connected between the inlet channel (120) and the external water supply source, and the water pump (400) is used for pressurizing the water flow from the external water supply source and then delivering the pressurized water flow to the water storage chamber (110) through the inlet channel (120).

7. The flush valve according to any one of claims 1 to 6, wherein there are two sets of the water outlet (130), the piston cavity, the piston mechanism (200) and the control device (300), and the two control devices (300) are used for respectively controlling the two water control pistons (220) at positions corresponding to the piston cavities so as to respectively adjust the water flow directions inside the two piston cavities and respectively drive the two flushing pistons (210) to close or switch on the corresponding water outlet (130) through the water flow.

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