Flushing valve and its control method

Abstract

This invention discloses a flushing valve and its control method. The flushing valve includes a valve body, a piston mechanism, and a control device. The valve body has a water storage chamber, a water inlet channel, a water outlet, and a piston chamber. The water inlet channel, water outlet, and piston chamber are all connected to the water storage chamber. The water inlet channel is used to connect to an external water supply source. The piston mechanism is located in the piston chamber and includes a flushing piston and a water control piston. One end of the flushing piston faces the water outlet. The control end of the control device is located in the piston chamber. The control method includes: adjusting the position of the water control piston in the movable chamber through the control device to adjust the water flow direction inside the piston chamber and control the flushing piston to close or open the water outlet. This invention can effectively shorten the path of the water flow from the water outlet. When flushing from the water outlet, the flushing water flow is independent of the piston chamber controlled by the control device, which can effectively increase the water flow rate and water pressure, resulting in a good flushing effect.

Description

Technical Field

[0001] This invention relates to the field of flushing valves, and particularly to a flushing valve and its control method. Background Technology

[0002] A flushing valve is a valve structure used to control the water flow effect. With continuous societal progress and increasing demands for product automation, solenoid valves are often used to control the flushing process in flushing systems to improve automation. When using a solenoid valve for flushing control, it is directly connected to and acts on the flushing channel. However, due to the size limitations of the solenoid valve, a small flow channel is required to control the flushing. When water flows through these small channels, problems such as low flow rate and insufficient pressure occur, resulting in poor flushing performance. Summary of the Invention

[0003] This invention aims to at least solve one of the technical problems existing in the prior art. To this end, this invention provides a flushing valve and its control method, which uses a piston mechanism to control the opening and closing of the flow channel in stages, thereby shortening the path of the inlet and outlet water while maintaining the radial dimension of the flow channel, thus effectively increasing the outlet water flow rate and outlet water pressure.

[0004] The first aspect of the present invention provides a flushing valve, comprising a valve body, a piston mechanism, and a control device. The valve body has a water storage chamber, a water inlet channel, a water outlet, and a piston chamber, all of which are connected to the water storage chamber. The piston mechanism is located in the piston chamber and includes a flushing piston and a water control piston. One end of the flushing piston faces the water outlet, and the water control piston is used to adjust the connection state of the piston chamber. The control end of the control device is located in the piston chamber, and the control device is used to adjust the position of the water control piston in the piston chamber to adjust the water flow direction inside the piston chamber and control the flushing piston to close or open the water outlet.

[0005] According to the above embodiments of the present invention, at least the following beneficial effects are achieved: A piston mechanism for graded control of flow channel opening and closing is provided. The position of the water-controlling piston in the piston chamber is adjusted by a control device. The adjusted position of the water-controlling piston can adjust the connectivity state of the piston chamber. In the corresponding connectivity state, the piston chamber can achieve corresponding water flow guidance, thereby using water pressure to drive the flushing piston to disengage from or block the outlet, thus achieving a closed or connected state between the outlet and the storage chamber. Compared to the prior art where water flow needs to pass through other channels to achieve flushing, the embodiments of the present invention, by setting both the outlet and the inlet flow channel directly connected to the storage chamber, allow the flushing water to enter through the inlet flow channel and directly reach the outlet through the storage chamber, effectively shortening the path of the flushing water from the outlet. Furthermore, the flushing flow rate is mainly determined by the minimum radial dimensions of the outlet and the inlet flow channel. When flushing from the outlet, the flushing water flow is independent of the piston chamber controlled by the control device, effectively increasing the outlet flow rate and outlet pressure, resulting in a good flushing effect.

[0006] According to some embodiments of the first aspect of the present invention, the piston chamber includes a flushing chamber and a water control chamber, both of which are connected to a water storage chamber. A flushing piston is disposed in the flushing chamber, and a water control piston is disposed in the water control chamber. A control device is used to adjust the water flow direction inside the water control chamber to adjust the position of the water control piston in the piston chamber. The water control piston is used to adjust the water flow direction between the flushing chamber and the water control chamber to drive the flushing piston to close or open the water outlet through the water flow.

[0007] According to some embodiments of the first aspect of the present invention, the flushing chamber includes a flushing active chamber, a pressure-push flow channel, and a pull-up flow channel; the water control chamber includes a water control active chamber and a constant water flow channel; a flushing piston is disposed in the flushing active chamber; a water control piston is disposed in the water control active chamber; the two ends of the pressure-push flow channel are respectively connected to the flushing active chamber and the water control active chamber; the two ends of the pull-up flow channel are respectively connected to the flushing active chamber and the water control active chamber; the two ends of the constant water flow channel are respectively connected to the water storage chamber and the water control active chamber; the water control piston is provided with a guide groove group, which is used to connect the constant water flow channel to the pressure-push flow channel or the pull-up flow channel, so that the water in the flushing active chamber drives the flushing piston to block or disengage from the outlet.

[0008] According to some embodiments of the first aspect of the present invention, the water control chamber further includes a water control channel, the two ends of which are respectively connected to the water control movable chamber and the constant water channel. The piston mechanism further includes a water control spring, the two ends of which are respectively connected to the water control piston and the valve body, so that the water control piston tends to move closer to the connection between the water control channel and the water control movable chamber. The control end of the control device is located in the water control channel, and the control device is used to control the communication state between the water control channel and the constant water channel so as to adjust the position of the water control piston in the water control movable chamber.

[0009] According to some embodiments of the first aspect of the present invention, the guide channel group includes a push channel and a pull channel, both of which are arranged circumferentially around the water control piston. The pull channel is used to connect the normal water flow channel and the pull flow channel, and the push channel is used to connect the normal water flow channel and the push channel.

[0010] According to some embodiments of the first aspect of the present invention, the flushing valve further includes a water pump connected between the water inlet channel and an external water supply source, the water pump being used to pressurize the water flow input from the external water supply source and deliver it to the water storage chamber through the water inlet channel.

[0011] According to some embodiments of the first aspect of the present invention, the water outlet, piston chamber, piston mechanism and control device are provided in two sets. The two control devices are used to control the position of the two water control pistons in the corresponding piston chambers respectively, so as to adjust the water flow direction inside the two piston chambers respectively and drive the two flushing pistons to close or open the corresponding water outlets respectively through the water flow.

[0012] A second aspect of the present invention provides a control method for a flushing valve. The flushing valve includes a valve body, a piston mechanism, and a control device. The valve body is provided with a water storage chamber, a water inlet channel, a water outlet, and a piston chamber. The water inlet channel, the water outlet, and the piston chamber are all connected to the water storage chamber. The water inlet channel is used to connect to an external water supply source. The piston mechanism is located in the piston chamber and includes a flushing piston and a water control piston. One end of the flushing piston faces the water outlet. The control end of the control device is located in the piston chamber.

[0013] Control methods include:

[0014] The position of the water control piston in the movable chamber is adjusted by the control device to regulate the direction of water flow inside the piston chamber and control the flushing piston to close or open the water outlet.

[0015] According to the above embodiments of the present invention, at least the following beneficial effects are achieved: A piston mechanism for graded control of flow channel opening and closing is provided. The position of the water-controlling piston in the piston chamber is adjusted by a control device. The adjusted position of the water-controlling piston can adjust the connectivity state of the piston chamber. In the corresponding connectivity state, the piston chamber can achieve corresponding water flow guidance, thereby using water pressure to drive the flushing piston to disengage from or block the outlet, thus achieving a closed or connected state between the outlet and the storage chamber. Compared to the prior art where water flow needs to pass through other channels to achieve flushing, the embodiments of the present invention, by setting both the outlet and the inlet flow channel directly connected to the storage chamber, allow the flushing water to enter through the inlet flow channel and directly reach the outlet through the storage chamber, effectively shortening the path of the flushing water from the outlet. Furthermore, the flushing flow rate is mainly determined by the minimum radial dimensions of the outlet and the inlet flow channel. When flushing from the outlet, the flushing water flow is independent of the piston chamber controlled by the control device, effectively increasing the outlet flow rate and outlet pressure, resulting in a good flushing effect.

[0016] According to some embodiments of the second aspect of the present invention, the piston chamber includes a flushing chamber and a water control chamber. The flushing chamber includes a flushing active chamber, a push flow channel, and a pull flow channel. The water control chamber includes a water control active chamber, a constant water flow channel, and a water control flow channel. The flushing piston is disposed in the flushing active chamber, and the water control piston is disposed in the water control active chamber. The two ends of the push flow channel are respectively connected to the flushing active chamber and the water control active chamber. The two ends of the pull flow channel are respectively connected to the flushing active chamber and the water control active chamber. The two ends of the constant water flow channel are respectively connected to the water storage chamber and the water control active chamber. The water control piston is provided with a guide groove group, which is used to connect the constant water flow channel to the push flow channel or the pull flow channel. The piston mechanism also includes a water control spring, the two ends of which are respectively connected to the water control piston and the valve body, so that the water control piston tends to move closer to the connection between the water control flow channel and the water control active chamber. The control end of the control device is located in the water control flow channel. In the initial state, the flushing piston blocks the water outlet.

[0017] The position of the water control piston in the movable chamber is adjusted by a control device to regulate the water flow direction inside the piston chamber and control the opening or closing of the water outlet by the flushing piston, including:

[0018] The control device controls the water flow channel to connect with the normal flow channel, so that the guide channel group connects the lifting channel and the normal flow channel. Water entering from the inlet channel passes through the water storage chamber, the normal flow channel, the guide channel group and the lifting channel into the flushing active chamber, and pushes the flushing piston away from the outlet.

[0019] According to some embodiments of the second aspect of the present invention, after a first preset time has elapsed, and after the water in the inlet channel is connected to the normal water channel by the control device, so that the guide channel group is connected to the lifting channel and the normal water channel, and the water entering the flushing active chamber through the water storage chamber, the normal water channel, the guide channel group and the lifting channel, and pushes the flushing piston away from the outlet, the method further includes:

[0020] After a preset time, the control device controls the cutoff of the water control channel and the normal water channel. Under the action of the water control spring, the water control piston moves close to the connection between the water control channel and the water control active chamber, so that the guide channel group connects the pressure push channel and the normal water channel. The water entering from the inlet channel passes through the water storage chamber, the normal water channel, the guide channel group and the pressure push channel into the flushing active chamber, and pushes the flushing piston to block the outlet and achieve reset.

[0021] 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. Attached Figure Description

[0022] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0023] Figure 1This is a three-dimensional structural schematic diagram of the flushing valve according to an embodiment of the present invention;

[0024] Figure 2 This is a top view of the flushing valve according to an embodiment of the present invention;

[0025] Figure 3 During the flushing control process of the flushing valve in this embodiment of the invention, along Figure 2 A schematic diagram of the cross-sectional structure of AA;

[0026] Figure 4 The flushing valve flushing control of the embodiment of the present invention is the following edge Figure 2 A schematic diagram of the cross-sectional structure of AA;

[0027] Figure 5 This is a schematic diagram of the internal perspective structure of a portion of the valve body in an embodiment of the flushing valve of the present invention;

[0028] Figure 6 This is a schematic diagram of the steps of the flushing valve control method according to an embodiment of the present invention;

[0029] Figure 7 yes Figure 6 A schematic diagram illustrating the specific steps of the S500 system;

[0030] Figure 8 yes Figure 7 A schematic diagram illustrating the specific steps following the S510 standard;

[0031] Figure 9 This is a schematic diagram showing the steps that the flushing valve control method of this embodiment of the invention also includes.

[0032] Figure label:

[0033] Valve body 100, water storage chamber 110, water inlet channel 120, water outlet 130, flushing chamber 140, flushing movable chamber 141, pressure push channel 142, pull-up channel 143, water control chamber 150, water control movable chamber 151, normal water channel 152, water control channel 153, unloading channel 160;

[0034] Piston mechanism 200, flushing piston 210, piston body 211, push rod 212, block 213, water control piston 220, push groove 221, pull groove 222, water control spring 230, flushing spring 240;

[0035] Control device 300;

[0036] Water pump 400. Detailed Implementation

[0037] In the description of this invention, unless otherwise explicitly defined, terms such as "setting," "installing," and "connecting" should be interpreted broadly. Those skilled in the art can reasonably determine the specific meaning of these terms in this invention based on the specific content of the technical solution. In the description of this invention, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. Furthermore, features specified as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, unless otherwise stated, "multiple" means two or more.

[0038] A flushing valve, also known as a water spray valve, is a valve structure used to control the water output. A direct flushing valve is a type of flushing valve used to directly connect to the outlet of a waterway, directly controlling the water flow and saving the need for a water tank.

[0039] With the continuous progress of society, the demand for product automation is increasing. For flushing structures, in order to improve the degree of automation, related technologies use solenoid valves to control the flushing switch. When controlling flushing through solenoid valves, the size of the flow channel needs to be reduced due to the size of the solenoid valve, and a corresponding flow channel structure needs to be set to control the water output. Since the water flow needs to pass through each flow channel in sequence before it can be output for flushing, the water flow rate is determined by the minimum size of each flow channel. Moreover, the water flow through the complex flow channel structure will cause pressure loss. As a result, the flushing valve in this technology has a small water flow rate and insufficient water pressure, resulting in poor flushing effect.

[0040] The following reference Figures 1 to 9 The present invention describes a flushing valve and its control method, which controls the opening and closing of the flow channel in stages through a piston mechanism 200, thereby shortening the path of water inlet and outlet while maintaining the radial dimension of the flow channel, thus effectively increasing the water flow rate and water pressure.

[0041] Reference Figures 1 to 5As shown, a flushing valve is described in a first aspect embodiment of the present invention, including a valve body 100, a piston mechanism 200, and a control device 300. The valve body 100 is provided with a water storage chamber 110, a water inlet channel 120, a water outlet 130, and a piston chamber. The water inlet channel 120, the water outlet 130, and the piston chamber are all connected to the water storage chamber 110. The water inlet channel 120 is used to connect to an external water supply source. The piston mechanism 200 is disposed in the piston chamber and includes a flushing piston 210 and a water control piston 220. One end of the flushing piston 210 faces the water outlet 130 so that the flushing piston 210 can block and cut off the flow of water at the water outlet 130. The control device 300... The control end of the device 300 is located in the piston chamber. The control device 300 is used to adjust the position of the water control piston 220 in the piston chamber to adjust the water flow direction inside the piston chamber and control the flushing piston 210 to close or open the outlet 130. That is, the water control piston 220 is used to adjust the connection state of the piston chamber so that the flushing piston 210 is driven to move closer to or away from the outlet 130 by water pressure, thereby controlling the outlet 130 to close or open. Here, closing means cutting off the outlet 130 and the water storage chamber 110 to form the effect of closing the water outlet, and opening means connecting the outlet 130 and the water storage chamber 110 to form the effect of flushing.

[0042] A piston mechanism 200 is provided to control the opening and closing of the flow channels in stages. The position of the water-controlling piston 220 within the piston chamber is adjusted by a control device 300. The adjusted position of the water-controlling piston 220 allows for adjustment of the connection state of the piston chamber. In the corresponding connection state, the piston chamber can guide the water flow, thereby using water pressure to drive the flushing piston 210 to disengage from or block the outlet 130. This achieves a closed or open state between the outlet 130 and the water storage chamber 110. Compared to existing technologies where water flow needs to pass through other channels to achieve flushing, this embodiment of the invention provides a system where the outlet 130 and the inlet... All water channels 110 are directly connected to the water storage chamber 120. The water used for flushing enters from the water inlet channel 120 and can directly reach the water outlet 130 through the water storage chamber 110. This can effectively shorten the path of the water flow from the water outlet 130. The flushing flow rate is mainly determined by the minimum radial dimensions of the water outlet 130 and the water inlet channel 120. When flushing from the water outlet, the flushing water flow is independent of the piston chamber controlled by the control device 300. That is, the water flow used for flushing will not pass through the internal structure of the piston chamber controlled by the control device 300, which can effectively improve the water flow rate and water pressure, resulting in a good flushing effect.

[0043] In related technologies, flushing valves utilize the pressure difference generated by their own water pressure within the unloading chamber to open the valve and achieve flushing. However, this structure is prone to failure to open the valve when water pressure is insufficient. Furthermore, since the valve is opened by its own water pressure, leakage is also likely to occur. The flushing valve described in the first aspect embodiment of the present invention is equipped with a piston mechanism 200, and the opening and closing of the flushing valve is actively controlled by a control device 300. This effectively improves the problem of insufficient water pressure preventing the valve from opening. In addition, since the opening and closing of the flushing valve is not directly achieved by water pressure, the probability of leakage due to incomplete valve closure is significantly reduced.

[0044] It is understood that the piston chamber includes a flushing chamber 140 and a water control chamber 150, both of which are connected to the water storage chamber 110. The flushing piston 210 is located in the flushing chamber 140 and can be driven to move within the flushing chamber 140. The water control piston 220 is located in the water control chamber 150 and can be driven to move within the water control chamber 150. The control device 300 is used to adjust the connection state of the water control chamber 150. When the water flow state of the water control chamber 150 changes, the position of the water control piston 220 in the piston chamber is adjusted. The water control piston 220 is used to adjust the connection state between the flushing chamber 140 and the water control chamber 150, so that the flushing piston 210 moves closer to or further away from the outlet 130 under the action of water pressure, thereby adjusting the connection between the outlet 130 and the water storage chamber 110 to be closed or opened. The piston mechanism 200 is equipped with a graded water control piston 220 and a flushing piston 210. It mainly uses the input water flow pressure as the driving force to drive the water control piston 220 and the flushing piston 210, which can reduce the control burden of the control device 300, reduce control costs, and save energy and environmental protection.

[0045] In related technologies, the flow channel structure of flushing valves is tortuous and complex, the processing cost is high, and the pressure of the flowing water is consumed, so the output water pressure cannot form the corresponding power.

[0046] It is understood that the flushing chamber 140 includes a flushing active chamber 141, a pressure-pushing channel 142, and a lifting channel 143; the water control chamber 150 includes a water control active chamber 151 and a constant water channel 152. The two ends of the pressure-pushing channel 142 are respectively connected to the flushing active chamber 141 and the water control active chamber 151. The flushing piston 210 is located in the flushing active chamber 141, and the water control piston 220 is located in the water control active chamber 151. The flushing piston 210 and the water control piston 220 can respectively move within the flushing active chamber 141... The piston 210 moves within the water control chamber 151 and the flushing chamber 141. The two ends of the pull-up flow channel 143 are connected to the flushing chamber 141 and the water control chamber 151, respectively. The two ends of the constant water flow channel 152 are connected to the water storage chamber 110 and the water control chamber 151, respectively. The water control piston 220 is equipped with a guide channel group, which connects the constant water flow channel 152 to the push-pull flow channel 142 or the pull-up flow channel 143, so that the water in the flushing chamber 141 drives the flushing piston 210 to block or disengage from the outlet 130. Both the push-pull flow channel 142 and the pull-up flow channel 143 are direct-flow channels. The simple flow channel structure effectively maintains the pressure of the flowing water, improving the stability of the driving action of the flushing piston 210. The flushing piston 210 achieves high reliability in lifting and lowering movement driven by water pressure. The water control piston 220 has the following two control states: 1. The water control piston 220 is located at one end of the water control active chamber 151. The guide channel group connects the normal water flow channel 152 and the push flow channel 142, and the connection between the normal water flow channel 152 and the lifting flow channel 143 is cut off by the water control piston 220. Water entering from the inlet flows sequentially passes through the water storage chamber 110, the normal water flow channel 152, the guide channel group and the push flow channel 142 before reaching the flushing active chamber 141, and pushing the flushing piston 210 closer to the outlet 130 until the flushing active chamber opens the outlet. 130 Blocking and intercepting flow; 2. The water control piston 220 is located at the other end of the water control active chamber 151. The guide channel group is connected to the normal water flow channel 152 and the lifting flow channel 143. The connection between the normal water flow channel 152 and the push flow channel 142 is cut off by the water control piston 220. The water entering from the inlet flows passes through the water storage chamber 110, the normal water flow channel 152, the guide channel group and the lifting flow channel 143 in sequence and reaches the flushing active chamber 141. It pushes the flushing piston 210 away from the outlet 130 until the flushing active chamber separates from the outlet 130 to achieve flushing.

[0047] refer to Figure 4 , 5 As shown, Figure 4 This is a state diagram showing the state of the water control piston 220 after adjustment and before the flushing piston 210 is driven by water pressure. Figure 5 This is a schematic diagram of the structure in which the flushing piston 210, driven by water pressure, exerts a corresponding control effect on the water outlet 130.

[0048] To improve the smoothness and reliability of control actions, it is understood that the water control chamber 150 also includes a water control channel 153, with its two ends connected to the water control movable chamber 151 and the constant water channel 152, respectively. The piston mechanism 200 also includes a water control spring 230, with its two ends connected to the water control piston 220 and the valve body 100, respectively, so that the water control piston 220 tends to move closer to the connection between the water control channel 153 and the water control movable chamber 151. The control end of the control device 300 is located in the water control channel 153, and the control device 300 is used to control the communication state between the water control channel 153 and the constant water channel 152, so as to adjust the position of the water control piston 220 in the water control movable chamber 151. The control device 300 includes a solenoid valve, the drive end of which is located in the water control channel 153.

[0049] It should be noted that after the flushing piston 210 is controlled to disengage from the outlet 130 to complete the flushing action, the control device 300 controls the disconnection between the control water flow channel 153 and the normal water flow channel 152. Under the action of the elastic restoring force of the control spring 230, the control piston 220 moves close to the connection between the control water flow channel 153 and the control water moving chamber 151. At this time, the guide channel group connects the normal water flow channel 152 and the pressure push channel 142. The high-pressure water flow enters the water storage chamber 110 from the inlet channel 120 and diffuses into other channels connected to the water storage chamber 110. Some of the water in the water storage chamber 110 reaches the flushing moving chamber 141 through the normal water flow channel 152, the guide channel group and the pressure push channel 142, and pushes the flushing piston 210 close to the outlet 130 until the flushing piston 210 blocks the outlet 130.

[0050] It is understood that the piston mechanism 200 also includes a flushing spring 240. One end of the flushing spring 240 is connected to the side of the flushing piston 210 away from the outlet 130, and the other end of the flushing spring 240 is connected to the flushing movable chamber 141, so that the flushing piston 210 tends to move closer to the outlet 130, which can effectively improve the effect of the flushing piston 210 in closing the blocked outlet 130.

[0051] Understandably, the valve body 100 also includes an unloading channel 160. One end of the unloading channel 160 is connected to the water control chamber 151, and the other end is connected to the lower part of the outlet 130. That is, the other end of the unloading channel 160 is located on the side of the outlet 130 away from the water storage chamber 110. When the outlet 130 needs to be closed, the water control spring 230 pushes the water control piston 220 downwards, and the water in the water control chamber 151 flows through the unloading channel 160 to the lower part of the outlet 130 to achieve unloading. Similarly, when the outlet 130 needs to be closed, the flushing spring 240 pushes the flushing piston 210 closer to the outlet 130 to block it, and the water in the flushing chamber 141 is driven and guided to the lower part of the outlet 130 through the unloading channel 160 in the above manner to achieve unloading.

[0052] It is understood that the guide channel assembly includes a push-pull channel 221 and a pull-up channel 222. Both the push-pull channel 221 and the pull-up channel 222 are arranged around the circumference of the water control piston 220. That is, the push-pull channel and the pull-up channel 222 are unconnected and are annular channels located on the circumferential surface of the water control piston 220. When it is necessary to block the outlet 130, the control device 300 controls the blockage of the water control channel 153 and the normal water channel 152. Under the thrust of the water control spring 230, the water control piston 220 approaches the connection between the water control channel 153 and the water control movable cavity 151. During operation, the pressure channel 221 connects the normal water flow channel 152 and the pressure channel 142. When the outlet 130 is needed to guide water flow, the control device 300 controls the connection of the control channel 153 and the normal water flow channel 152. The water pressure from the water storage chamber 110 enters the control chamber 151 through the control channel 153 to push the control piston 220 away from the connection between the control channel 153 and the control chamber 151. At this time, the pull channel 222 connects the normal water flow channel 152 and the pull channel 143.

[0053] It is understood that the flushing piston 210 includes a piston body 211, a push rod 212, and a plug 213. The piston body 211 and the plug 213 are fixedly connected to both ends of the push rod 212. The piston body 211 is located in the flushing active chamber 141. The plug 213 is used to block the water outlet 130. The push rod 212 passes through the flushing active chamber 141 and the water storage chamber 110. The push channel 142 is located on the side of the piston body 211 away from the water outlet 130. The pull channel 143 is located on the side of the piston body 211 close to the water outlet 130. The connection between the push channel 142 and the flushing active chamber 141 is located at one end of the movement path of the piston body 211. The connection between the pull channel 143 and the flushing active chamber 141 is located at the other end of the movement path of the piston body 211, so that the push channel 142 or the pull channel 143 can generate water pressure pushing force in two directions on the piston body 211 respectively. Among them, the block 213 can be set as an inverted frustum structure, which can improve the blocking and interception effect of the block 213 on the outlet 130.

[0054] It should be noted that after the flushing piston 210 is controlled to disengage from the outlet 130 to complete the flushing action, when it is necessary to cut off the flow, the control device 300 controls the disconnection between the control flow channel 153 and the normal flow channel 152. Under the action of the elastic restoring force of the control spring 230, the control piston 220 moves close to the connection between the control flow channel 153 and the control movable chamber 151. At this time, the pressure push groove 221 connects the normal flow channel 152 and the pressure push channel 142, and the high-pressure water flows from the inlet flow channel 120 into the storage tank. The water diffuses from the water chamber 110 into other channels connected to the water storage chamber 110. After some water in the water storage chamber 110 enters the normal water flow channel 152 and the pressure push groove 221, the water flows from the pressure push channel 142 into the flushing active chamber 141. The water flow applies pressure to the piston body 211 from the side away from the outlet 130, thereby pushing the flushing piston 210 closer to the outlet 130 until the flushing piston 210 blocks and cuts off the flow. After the flushing piston 210 is controlled to block the outlet 130 and completes the cut-off, it is necessary to… During flushing, the control device 300 drives the control channel 153 and the normal water channel 152 to connect. Water entering from the inlet channel 120 passes sequentially through the storage chamber 110, the normal water channel 152, and the control channel 153 before entering the control chamber 151. Under the action of the pressure difference, the control piston 220 is pushed away from the connection between the control channel 153 and the control chamber 151, and the control spring 230 is compressed until the pull-up groove 222 connects the normal water channel 152 and the pull-up channel 143. The high water pressure... Water flows into the water storage chamber 110 from the inlet channel 120 and diffuses into other channels connected to the water storage chamber 110. After some water in the water storage chamber 110 enters the normal water flow channel 152 and the lifting groove 222, the water flows into the flushing action chamber 141 from the lifting channel 143. The water flows from the side near the outlet 130 to apply pressure to the piston body 211, thereby pushing the flushing piston 210 away from the outlet 130 until the flushing piston 210 is completely separated from the outlet 130, so as to realize the flushing action of the outlet 130.

[0055] Understandably, the flushing valve also includes a water pump 400, which is connected between the water inlet channel 120 and an external water supply source. The water pump 400 is used to pressurize the water flow and deliver it to the water storage chamber 110 through the water inlet channel 120. In the event of insufficient water pressure, turning on the water pump 400 can increase the water pressure input to the water inlet channel 120, thereby improving the overall control of the flushing valve and the flushing effect.

[0056] The water distribution valve is a valve structure used to control the water output effect of two water paths. It can be understood that there are two sets of outlet 130, piston chamber, piston mechanism 200, and control device 300. The two control devices 300 are used to position the two water control pistons 220 in their respective piston chambers, thereby adjusting the water flow direction inside the two piston chambers and driving the two flushing pistons 210 to close or open the corresponding outlet 130. By setting two sets of outlet 130, piston chamber, piston mechanism 200, and control device 300, flushing control of two different water paths can be achieved.

[0057] A second aspect of the present invention provides a control method for a flushing valve. The flushing valve includes a valve body 100, a piston mechanism 200, and a control device 300. The valve body 100 is provided with a water storage chamber 110, a water inlet channel 120, a water outlet 130, and a piston chamber. The water inlet channel 120, the water outlet 130, and the piston chamber are all connected to the water storage chamber 110. The flushing chamber 140 is connected to the water control chamber 150. The water inlet channel 120 is used to connect to an external water supply source. The piston mechanism 200 is located in the piston chamber. The piston mechanism 200 includes a flushing piston 210 and a water control piston 220. One end of the flushing piston 210 is directly opposite the water outlet 130. The control end of the control device 300 is located in the piston chamber.

[0058] Reference Figure 6 As shown, the control method includes, but is not limited to, the following steps:

[0059] S500: The position of the water control piston 220 in the movable chamber is adjusted by the control device 300 to adjust the water flow direction inside the piston chamber and control the flushing piston 210 to close or open the water outlet 130.

[0060] A piston mechanism 200 is set up to control the opening and closing of the flow channel in stages. The position of the water control piston 220 in the piston chamber is adjusted by the control device 300. The adjusted position of the water control piston 220 can adjust the connection state of the piston chamber. In the corresponding connection state, the piston chamber can use water pressure to drive the flushing piston 210 to disengage from or block the outlet 130, thereby realizing the closed or open state between the outlet 130 and the water storage chamber 110. Since the outlet 130 and the inlet flow channel 120 are directly connected to the water storage chamber 110, the water entering from the inlet flow channel 120 can directly reach the outlet 130 through the water storage chamber 110, which can effectively shorten the path of the water flow flushed from the outlet 130. Moreover, the water flow rate is mainly controlled by the minimum radial dimension of the outlet 130 and the inlet flow channel 120, which can effectively improve the water flow rate and water pressure, and the flushing effect is good.

[0061] It is understood that the piston chamber includes a flushing chamber 140 and a water control chamber 150. The flushing chamber 140 includes a flushing movable chamber 141, a pressure-pushing channel 142, and a lifting channel 143. The water control chamber 150 includes a water control movable chamber 151, a constant water flow channel 152, and a water control channel 153. The flushing piston 210 is located in the flushing movable chamber 141, and the water control piston 220 is located in the water control movable chamber 151. The two ends of the pressure-pushing channel 142 are respectively connected to the flushing movable chamber 141 and the water control movable chamber 151. The two ends of the lifting channel 143 are respectively connected to the flushing movable chamber 141 and the water control movable chamber 151. The constant water flow channel 152... The two ends of 52 are respectively connected to the water storage chamber 110 and the water control active chamber 151. The water control piston 220 is provided with a guide groove group, which is used to connect the normal water flow channel 152 to the push flow channel 142 or the pull flow channel 143. The piston mechanism 200 also includes a water control spring 230. The 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 tends to move closer to the connection between the water control flow channel 153 and the water control active chamber 151. The control end of the control device 300 is located in the water control flow channel 153. In the initial state, the flushing piston 210 blocks the water outlet 130.

[0062] refer to Figure 7 As shown, in step S500, the position of the water control piston 220 in the movable chamber is adjusted by the control device 300 to adjust the water flow direction inside the piston chamber and control the flushing piston 210 to close or open the water outlet 130, including but not limited to the following steps:

[0063] S510: The control device 300 controls the water flow channel 153 to connect to the normal water flow channel 152, so that the guide channel group connects the lifting channel 143 and the normal water flow channel 152. Water entering from the inlet channel 120 passes through the water storage chamber 110, the normal water flow channel 152, the guide channel group and the lifting channel 143 into the flushing active chamber 141, and pushes the flushing piston 210 away from the outlet 130.

[0064] Understandably, reference Figure 8 As shown, after step S520, after the control device 300 controls the water flow channel 153 to connect to the normal water flow channel 152, so that the guide channel group connects the lifting channel 143 and the normal water flow channel 152, the water entering from the inlet channel 120 passes through the water storage chamber 110, the normal water flow channel 152, the guide channel group and the lifting channel 143 into the flushing active chamber 141, and pushes the flushing piston 210 away from the outlet 130, the following steps are also included but not limited to:

[0065] S520: After a preset time, the water control channel 153 and the normal water channel 152 are cut off by the control device 300. 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 active chamber 151, so that the guide channel group connects the push channel 142 and the normal water channel 152. The water entering from the inlet channel 120 passes through the water storage chamber 110, the normal water channel 152, the guide channel group and the push channel 142 and enters the flushing active chamber 141, and pushes the flushing piston 210 to block the outlet 130 to achieve reset.

[0066] It is understandable that the valve body 100 is also provided with an unloading channel 160. One end of the unloading channel 160 is connected to the water control chamber 151, and the other end of the unloading channel 160 is connected to the bottom of the outlet 130. That is, the other end of the unloading channel 160 is located on the side of the outlet 130 away from the water storage chamber 110. Step S520 is as follows: When it is necessary to block the outlet 130, the control device 300 controls the cut-off of the water control channel 153 and the normal water channel 152. During the process of the water control spring 230 pushing the water control piston 220 downward, the water in the water control active chamber 151 flows to the bottom of the outlet 130 through the unloading channel 160 to achieve unloading. After the unloading is completed, the guide channel group connects the pressure push channel 142 and the normal water channel 152. The water entering from the inlet channel 120 passes through the water storage chamber 110, the normal water channel 152, the guide channel group and the pressure push channel 142 into the flushing active chamber 141, and pushes the flushing piston 210 to block the outlet 130 to achieve reset.

[0067] The piston mechanism 200 also includes a flushing spring 240. One end of the flushing spring 240 is connected to the side of the flushing piston 210 away from the outlet 130, and the other end is connected to the flushing movable chamber 141. This causes the flushing piston 210 to tend to move closer to the outlet 130, effectively improving the effect of the flushing piston 210 in closing and blocking the outlet 130. When it is necessary to close the outlet 130, the flushing spring 240 pushes the flushing piston 210 closer to the outlet 130 to block it. In the process described above, the water in the flushing movable chamber 141 is guided to the area below the outlet 130 through the unloading channel 160 to achieve unloading.

[0068] Understandably, the flushing valve also includes a water pump 400, the outlet of which is connected to the water inlet channel 120;

[0069] refer to Figure 9 As shown, the control method for the flushing valve also includes, but is not limited to, the following steps:

[0070] S600: When the water pressure entering from the inlet channel 120 is lower than the preset water pressure, the water pump 400 is controlled to pressurize the water flow and deliver it to the water storage chamber 110 through the inlet channel 120.

[0071] Specifically, step S600 can be set after step S510 so that the water pump 400 provides high-pressure water flow to the water storage chamber 110 through the water inlet channel 120 and forms a high-pressure water flow effect from the water outlet 130.

[0072] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0073] Although embodiments of the invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A flush valve characterized by, include: The valve body (100) is provided with a water storage chamber (110), a water inlet channel (120), a water outlet (130) and a piston chamber. The water inlet channel (120), the water outlet (130) and the piston chamber are all connected to the water storage chamber (110). The water inlet channel (120) is used to connect to an external water supply source. A piston mechanism (200) is provided in the piston chamber. The piston mechanism (200) includes a flushing piston (210) and a water control piston (220). One end of the flushing piston (210) is directly opposite the water outlet (130). A control device (300) is provided, the control end of which is located in the piston chamber. The control device (300) is used to adjust the position of the water control piston (220) in the piston chamber to adjust the water flow direction inside the piston chamber and control the flushing piston (210) to close or open the water outlet (130). The piston chamber includes a flushing chamber (140) and a water control chamber (150), both of which are connected to the water storage chamber (110). The flushing piston (210) is located in the flushing chamber (140), and the water control piston (220) is located in the water control chamber (150). The control device (300) is used to adjust the water flow direction inside the water control chamber (150) to adjust the position of the water control piston (220) in the piston chamber. The water control piston (220) is used to adjust the water flow direction between the flushing chamber (140) and the water control chamber (150) to drive the flushing piston (210) to close or open the outlet (130) through water flow. The flushing chamber (140) includes a flushing active chamber (141), a pressure-push channel (142), and a pull-up channel (143). The water control chamber (150) includes a water control active chamber (151) and a constant water channel (152). The flushing piston (210) is located in the flushing active chamber (141), and the water control piston (220) is located in the water control active chamber (151). The two ends of the pressure-push channel (142) are respectively connected to the flushing active chamber (141) and the water control active chamber (151). The pull-up channel (143) has... The two ends are respectively connected to the flushing active chamber (141) and the water control active chamber (151). The two ends of the constant water flow channel (152) are respectively connected to the water storage chamber (110) and the water control active chamber (151). The water control piston (220) is provided with a guide groove group. The guide groove group is used to connect the constant water flow channel (152) to the push flow channel (142) or the pull flow channel (143) so that the water in the flushing active chamber (141) drives the flushing piston (210) to block or disengage from the water outlet (130). The water control chamber (150) further includes a water control channel (153), the two ends of which are connected to the water control movable chamber (151) and the constant water channel (152), respectively. The piston mechanism (200) further includes a water control spring (230), the two ends of which are connected to the water control piston (220) and the valve body (100), respectively, so that the water control piston (220) tends to move closer to the connection between the water control channel (153) and the water control movable chamber (151). The control end of the control device (300) is located in the water control channel (153). The control device (300) is used to control the communication state between the water control channel (153) and the constant water channel (152), so as to adjust the position of the water control piston (220) in the water control movable chamber (151). The flow guide channel group includes a push channel (221) and a pull channel (222). The push channel (221) and the pull channel (222) are both arranged around the water control piston (220) in the circumferential direction. The pull channel (222) is used to connect the normal water flow channel (152) and the pull flow channel (143). The push channel (221) is used to connect the normal water flow channel (152) and the push channel (142).

2. The flush valve of claim 1, wherein It also includes a water pump (400), which is connected between the water inlet channel (120) and the external water supply source. The water pump (400) is used to pressurize the water flow input from the external water supply source and deliver it to the water storage chamber (110) through the water inlet channel (120).

3. A flush valve according to claim 1 or 2, characterised in that The outlet (130), the piston chamber, the piston mechanism (200), and the control device (300) are each provided in two sets. The two control devices (300) are used to control the two water control pistons (220) at the positions of the corresponding piston chambers, so as to adjust the water flow direction inside the two piston chambers respectively and drive the two flushing pistons (210) to close or open the corresponding outlet (130) through the water flow.

4. A method for controlling a flushing valve, characterized in that, Applied to the flushing valve as described in any one of claims 1 to 3; The control method includes: The position of the water control piston (220) in the movable chamber is adjusted by the control device (300) to adjust the water flow direction inside the piston chamber and control the flushing piston (210) to close or open the water outlet (130).

5. The control method for the flushing valve according to claim 4, characterized in that, The piston chamber includes a flushing chamber (140) and a water control chamber (150). The flushing chamber (140) includes a flushing active chamber (141), a pressure-pushing channel (142), and a lifting channel (143). The water control chamber (150) includes a water control active chamber (151), a constant water channel (152), and a water control channel (153). The flushing piston (210) is located in the flushing active chamber (141), and the water control piston (220) is located in the water control active chamber (151). The two ends of the pressure-pushing channel (142) are respectively connected to the flushing active chamber (141) and the water control active chamber (151). The two ends of the lifting channel (143) are respectively connected to the flushing active chamber (141) and the water control active chamber (151). The two ends of the constant water channel (152) are respectively connected to the flushing active chamber (141) and the water control active chamber (151). The ends are respectively connected to the water storage chamber (110) and the water control active chamber (151). The water control piston (220) is provided with a guide groove group. The guide groove group is used to connect the constant water flow channel (152) to the push flow channel (142) or the pull flow channel (143). The piston mechanism (200) also includes a water control spring (230). The 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) tends to move closer to the connection between the water control flow channel (153) and the water control active chamber (151). The control end of the control device (300) is located in the water control flow channel (153). In the initial state, the flushing piston (210) blocks the water outlet (130). The step of adjusting the position of the water control piston (220) in the movable chamber through the control device (300) to adjust the water flow direction inside the piston chamber and control the flushing piston (210) to close or open the water outlet (130) includes: The control device (300) controls the water control channel (153) to connect with the constant water channel (152), so that the guide channel group connects the lifting channel (143) and the constant water channel (152). Water entering from the inlet channel (120) passes through the water storage chamber (110), the constant water channel (152), the guide channel group and the lifting channel (143) into the flushing active chamber (141), and pushes the flushing piston (210) to disengage from the outlet (130).

6. The control method for the flushing valve according to claim 5, characterized in that, After the control device (300) controls the water control channel (153) to connect with the constant water channel (152), so that the guide channel group connects the lifting channel (143) and the constant water channel (152), and the water entering from the inlet channel (120) passes through the water storage chamber (110), the constant water channel (152), the guide channel group and the lifting channel (143) into the flushing active chamber (141), and pushes the flushing piston (210) away from the outlet (130), the following is also included: After a preset time, the control device (300) controls the cut-off of the water control channel (153) and the constant water channel (152). The water control piston (220) moves close to the connection between the water control channel (153) and the water control active cavity (151) under the action of the water control spring (230), so that the guide channel group connects the push channel (142) and the constant water channel (152). The water entering from the inlet channel (120) passes through the water storage cavity (110), the constant water channel (152), the guide channel group and the push channel (142) into the flushing active cavity (141), and pushes the flushing piston (210) to block the outlet (130) to achieve reset.

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