WO2023116887A1

WO2023116887A1 - Tankless mechanical valve flushing system

Info

Publication number: WO2023116887A1
Application number: PCT/CN2022/141430
Authority: WO
Inventors: 徐贵龙
Original assignee: 厦门智海峰卫浴科技有限公司
Priority date: 2021-12-24
Filing date: 2022-12-23
Publication date: 2023-06-29
Also published as: KR20240073097A; CN114411898A; CN114411898B

Abstract

The present invention relates to the field of toilet flushing systems. Disclosed is a tankless mechanical valve flushing system. A first drainage pipe, a second drainage pipe and a water inlet pipe are provided on one side of a main control chamber; a flow channel switching mechanism is provided between the first drainage pipe and the second drainage pipe; when a main control piston moves towards a starting chamber, the first drainage pipe is communicated with the water inlet pipe; a water chamber is formed in the main control piston, a switching control water channel is communicated with the other side of the main control chamber; when the main control piston is reset, the water chamber is communicated with the switching control water channel and the water inlet pipe so as to drive the flow channel switching mechanism to enable the second drainage pipe to be communicated with the water inlet pipe. By means of delay configuration of the starting chamber, one-time triggering can control the main control piston to complete one reciprocating motion, and meanwhile, the main control piston controls the flow channel switching mechanism to switch a water outlet pipeline, so that a water flow is pushed to complete the whole process of outer ring flushing, jet flushing and outer ring secondary flushing and water storage, and the whole process is completed by means of a mechanical acting force without depending on electric power of a water tank.

Description

A tankless mechanical valve flushing system

technical field

The invention relates to the field of toilet flushing systems, in particular to a tankless mechanical valve flushing system.

Background technique

The toilet, also called the toilet, is a covered bucket for defecation. The invention of the toilet is called a great invention, which solves the problem of people's own eating and drinking. Later, it gradually evolved into a toilet using the principles of siphon, spiral siphon, and now the latest jet siphon and super-rotary siphon. Others believe that the flush toilet is the root of all evil because it consumes a lot of domestic water. There are many classifications of toilets, including split and conjoined. With the development of science and technology, many novel varieties have also appeared. According to the matching method of the toilet cover, it can also be divided into ordinary toilets and smart toilets. Smart toilets can be further divided into automatic cover-changing smart toilets and non-automatic cover-changing toilets. The former includes automatic cover-changing plus flushing, automatic cover-changing with flushing and drying, and other types.

Existing toilets generally need a water tank to store water, but the top of the toilet occupies a large space, which is inconvenient to carry or use; while some existing toilets may not have a water tank, but generally need to be connected to the control. It is inconvenient to be unable to use it during a power outage.

Contents of the invention

In order to overcome the defects of the prior art, the technical problem to be solved by the present invention is to propose a water tankless mechanical valve flushing system, which does not need a water tank or electricity, and can realize multiple functions of the toilet under the drive of water pressure. stage flushing process.

For reaching this purpose, the present invention adopts following technical scheme:

A tankless mechanical valve flushing system provided by the present invention includes a main control chamber, a main control piston is slidably connected to the main control chamber, and an activation chamber is connected to one end of the main control chamber. A return spring is arranged in the main control chamber to offset the main control piston. When the activation chamber is triggered to open, the main control piston presses the return spring to move toward the activation chamber under the action of water pressure. ; One side of the main control chamber is provided with a first drain pipe, a second drain pipe and a water inlet pipe, and a channel switching mechanism is arranged between the first drain pipe and the second drain pipe, and the main control chamber When the piston moves toward the starting chamber, the first drain pipe communicates with the water inlet pipe; the main control piston is provided with a water chamber, and the other end of the main control chamber is connected with a switching control water channel, When the main control piston is reset, the water passage chamber communicates with the switching control water channel and the water inlet pipe to drive the channel switching mechanism to make the second drain pipe communicate with the water inlet pipe. One trigger can control the main control piston to complete a reciprocating motion, thereby pushing the water flow to complete the entire process of outer ring flushing, jet flushing, and outer ring secondary flushing and water storage. The whole process is completed by mechanical force without relying on the water tank electricity.

The preferred technical solution of the present invention is that an auxiliary piston is sleeved on the outside of the main control piston, the auxiliary piston is slidably connected to the main control piston, and the auxiliary piston is blocked between the first drain pipe and the inlet. Between the water pipes, the outer wall of the main control piston is provided with a limit step, so that when the main control piston moves to the starting chamber, the limit step pushes the auxiliary piston away, and the auxiliary piston is connected to There is a resistance spring, so that the auxiliary piston has a movement tendency to move toward the activation chamber. Avoid premature pressure relief through the primary drain so that there is sufficient water pressure to push the master control piston to the bottom and complete its full stroke.

The preferred technical solution of the present invention is that sealing rings are provided on both sides of the end connecting the switching control water channel and the main control piston, and the main control piston is in sliding connection with the sealing; There are two water flow channels in the length direction, and when the main control piston resets to one of the water flow channels between the two sealing rings, the water flows from the water inlet pipe through the water passage chamber into the switching control water channel middle. This makes it possible to conveniently control the water flow to enter the switching control water channel at an appropriate time to switch the bottom jet flushing.

The preferred technical solution of the present invention is that a guide rod is provided in the center of the main control chamber, the main control piston is slidably connected to the guide rod, and a water gap is provided between the guide rod and the main control piston. The middle part of the main control piston is provided with a limit boss, and when the main control piston moves to the bottom end, the limit boss is against the end of the guide rod; the end of the main control piston is provided with a piston head, when the main control piston moves to the top end, the end surface of the piston head is against the auxiliary piston, and the auxiliary piston cuts off the passage between the first drain pipe and the water inlet pipe. It is convenient to control the stroke of the main control piston, and control the opening timing of the outer ring for flushing.

The preferred technical solution of the present invention is that an air pressure chamber is provided on the top side wall of the main control chamber, the air pressure chamber communicates with the main control chamber and the external atmosphere, a rubber ball is arranged in the air pressure chamber, and the rubber ball The diameter is greater than the diameter of the openings at both ends of the air pressure chamber. It can effectively balance the air pressure and avoid the siphon affecting the use of the device.

The preferred technical solution of the present invention is that the starting chamber is divided into an upper chamber and a lower chamber, a starting piston is slidably connected to the lower chamber, and a time delay is formed between the inside of the starting piston and the bottom of the lower chamber. chamber, the water inlet end of the lower chamber is located outside the starting piston, and a chamber sealing ring is arranged between the starting piston and the upper chamber; a delay spring is arranged in the delay chamber, so The time-delay spring is opposed to the starting piston, so that the starting piston has a movement tendency to squeeze the sealing ring of the chamber. Delayed closing can be realized to ensure that the main control piston has enough time to complete the stroke, and the water pressure can continue to exert force on the main control piston in the open state.

The preferred technical solution of the present invention is that the top of the starting piston is provided with an opening communicating with the delay chamber, the opening is provided with an opening sliding sleeve, and the lower end is provided with a gasket for sealing the opening at the top of the starting piston A closing spring is arranged outside the opening sliding sleeve, so that the opening sliding sleeve has a movement tendency to squeeze the sealing gasket. The time to start the piston reset can be controlled, so as to achieve delayed closing.

The preferred technical solution of the present invention is that a switching piston is provided between the first drain pipe and the second drain pipe, a switching control chamber is provided at the end of the switching control channel, and one end of the switching piston is slidably connected to the switching control channel. In the cavity, the switching piston slides under the push of the water flow coming in from the switching control channel, so that the other end of the switching piston controls the water inlet pipe to communicate with the first drain pipe or the second drain pipe. Realize the switching between outer ring flushing and bottom jet flushing.

The preferred technical solution of the present invention is that a switching spring is sleeved on the switching piston, so that the switching piston has a tendency to move toward the switching control channel; when the main control piston resets to a position where the water flow channel Between the two sealing rings, when one of the water flow passages straddles the two sealing rings and communicates with the switching control chamber, the switching piston resets under the restoring force of the switching spring. The switching process is completed under the control of the main control piston.

The preferred technical solution of the present invention is that a water inlet piston is slidably arranged in the water inlet pipe, a water inlet channel is arranged in the middle of the water inlet piston, a pressure regulating plug is arranged at the water inlet end of the water inlet channel, and the water inlet A water inlet spring is sleeved on the outside of the water piston, so that the water inlet piston has a movement tendency away from the pressure regulating plug. As the water pressure increases, the water pressure of the water inlet piston moves closer to the The direction of the pressure regulating plug can be moved to adjust the gap between the pressure regulating plug and the water inlet channel. Avoid damage to the device due to excessive water pressure, and at the same time can effectively save water.

The beneficial effects of the present invention are:

The water tankless mechanical valve flushing system provided by the present invention can control the main control piston to complete a reciprocating movement by one trigger through the delay setting of the start chamber, during which the main control piston controls the channel switching mechanism to switch the water outlet pipe, In this way, the water flow is pushed to complete the entire process of outer ring flushing, jet flushing, and outer ring secondary flushing and water storage. The whole process is completed by mechanical force and does not need to rely on the electricity of the water tank.

Description of drawings

Fig. 1 is a schematic diagram of the connection between the tankless mechanical valve flushing system and the toilet provided in the specific embodiment of the present invention;

Fig. 2 is a schematic diagram of the sectional principle of the tankless mechanical valve flushing system provided in the specific embodiment of the present invention;

Fig. 3 is an enlarged schematic view of the ellipse in Fig. 2 provided in the specific embodiment of the present invention;

In the picture:

11. Main control chamber; 12. Main control piston; 13. Seal ring; 14. Switching control channel; 15. Limiting boss; 16. Guide rod; 17. Return spring; 121. Water chamber; 122. Water flow Channel; 21, air pressure chamber; 22, rubber ball; 31, switching piston; 32, switching spring; 33, switching control cavity; 4, second drain pipe; 5, first drain pipe; 6, water inlet pipe; 61, pressure Adjusting plug; 62, water inlet piston; 63, water inlet spring; 64, water inlet channel; 7, starting chamber; 71, opening sliding sleeve; 72, sealing gasket; 73, delay chamber; 74, lower chamber; 75, delay spring; 76, upper chamber; 77, start piston; 78, delay hole; 81, secondary piston; 82, resistance spring.

Detailed ways

The technical solutions of the present invention will be further described below in conjunction with the accompanying drawings and through specific implementation methods.

As shown in Figures 1-3, this embodiment provides a water tankless mechanical valve flushing system, including a main control chamber 11, a main control piston 12 is slidably connected to the main control chamber 11, and the main control One end of the control chamber 11 communicates with the start chamber 7, and the control and opening mechanism of the start chamber 7 is similar to the push switch of a traditional water tank toilet. The main control chamber 11 is provided with a return spring 17 against the main control piston 12. When the activation chamber 7 is triggered to open, the main control piston 12 squeezes the return spring under the action of water pressure. 17 moves toward the starting chamber 7; one side of the main control piston 12 is directly connected to the water inlet pipe 6, and when the main control chamber 11 is opened, its pressure will drop, thereby pushing the main control chamber 11 under the action of high-pressure water flow. The piston 12 moves towards the direction of the starting chamber 7, and the starting chamber 7 remains open until the main control piston 12 completes the stroke in this direction, that is, when the main control piston 12 contacts the guide rod 16 in the middle. One side of the main control chamber 11 is provided with a first drain pipe 5 , a second drain pipe 4 and a water inlet pipe 6 , and a channel switching mechanism is arranged between the first drain pipe 5 and the second drain pipe 4 , when the main control piston 12 moves toward the direction of the starting chamber 7, in the second half of the movement of the main control piston 12 in this direction, the first drain pipe 5 communicates with the water inlet pipe 6, and starts to flush the toilet. The outer ring is flushed until the master control piston 12 moves to the bottom. The main control piston 12 is provided with a water passage 121, and the other end of the main control chamber 11 is connected with a switching control water channel 14. When the main control piston 12 is reset, the starting chamber 7 has been closed at this time, and the main control The piston 12 no longer bears the hydraulic force, and moves to the initial position under the action of the return spring 17 . When the main control piston 12 resets to a certain point, the water passage chamber 121 communicates with the switching control water channel 14 and the water inlet pipe 6 to drive the flow channel switching mechanism to make the second drain pipe 4 and the water inlet pipe 4 connect to each other. The water pipe 6 communicates so that the water flow is ejected from the bottom. When the main control piston 12 continues to reset to the initial position, it is first switched to the water outlet of the toilet outer ring to store water in the toilet, and finally closes. One trigger can control the main control piston 12 to complete a reciprocating motion, thereby pushing the water flow to complete the entire process of outer ring flushing, jet flushing, and outer ring secondary flushing and water storage. The whole process is completed by mechanical force without relying on Electricity for the tank. Each piston is covered with a sealing ring to ensure water tightness when the piston moves.

In order to ensure that the water pressure is sufficient to activate the entire flushing system, an auxiliary piston 81 is sleeved on the outside of the main control piston 12, and the auxiliary piston 81 is slidably connected to the main control piston 12, and the auxiliary piston 81 is blocked in the Between the first drain pipe 5 and the water inlet pipe 6, the outer wall of the main control piston 12 is provided with a limit step, so that when the main control piston 12 moves toward the starting chamber 7, the limit step The auxiliary piston 81 is pushed away, and the auxiliary piston 81 is connected with a resistance spring 82 , so that the auxiliary piston 81 has a movement tendency to move toward the starting chamber 7 . Avoid premature pressure relief through the first drain pipe 5, so that there is enough water pressure to push the main control piston 12 to the bottom to complete the entire stroke. When the starting chamber 7 is opened, the water flow can only flow to the starting chamber 7, so that the maximum force can be provided to push the main control piston 12 towards the starting chamber 7, so as to ensure that the water pressure is sufficient to start the entire flushing system. When the main control piston 12 is pushed to a certain distance, the remaining stroke can also be completed by relying on a small hydraulic pressure. At this time, the limit boss 15 pushes the auxiliary piston 81 away, so that a part of the water flow flows out from the first drain pipe 5. The toilet bowl starts to flush. When the main control piston 12 resets, the auxiliary piston 81 remains open under the action of the resistance spring 82, until the main control piston 12 is fully reset, the main control piston 12 pushes the auxiliary piston 81 back, so that the subsequent flushing process There is always water flowing out.

Preferably, in order to control the operation of the channel switching mechanism, sealing rings 13 are provided on both sides of the end of the switching control water channel 14 connected to the main control piston 12, and the main control piston 12 is in sliding connection with the sealing; The side wall of the water passage 121 is provided with two water flow channels 122 along the length direction. When the main control piston 12 is reset to one of the water flow channels 122 located between the two sealing rings 13, the water flow from the water inlet pipe 6 flows into the switching control waterway 14 through the water passage chamber 121. This makes it possible to conveniently control the flow of water to enter the switching control water channel 14 at an appropriate time to switch the bottom jet flushing. The sealing ring 13 is set so that water flow will not enter the switching control water channel 14 under normal circumstances, only when the main control piston 12 is in the reset stroke, the auxiliary piston 81 is in the open state, and now the main control piston 12 is sealed from the first seal. A section of the ring 13 toward the return spring 17 is located in the water. At this time, the water flow will enter the water chamber 121 through the water flow channel 122. When a water flow channel 122 enters between the two sealing rings 13, the water flow will pass through. Inflow switching control channel 14 controls the operation of the channel switching mechanism.

Preferably, the center of the main control chamber 11 is provided with a guide rod 16, the main control piston 12 is slidably connected to the guide rod 16, and the guide rod 16 and the main control piston 12 are provided with a water gap , the water in the water inlet pipe 6 flows into the starting chamber 7 through the water gap, the middle part of the main control piston 12 is provided with a limiting boss 15, when the main control piston 12 moves to the bottom end, the limiting boss 15 The platform 15 is against the end of the guide rod 16; at this moment, the one-way stroke of the main control piston 12 is completed. The end of the main control piston 12 is provided with a piston head. When the main control piston 12 moves to the top end, the end surface of the piston head is against the auxiliary piston 81, and the auxiliary piston 81 cuts off the first drainage. There is a passage between the pipe 5 and the water inlet pipe 6 . It is convenient to control the stroke of the main control piston 12, and control the opening timing of the outer ring for flushing. When resetting, until the secondary piston 81 is pushed back to the initial position, the toilet is turned off at this moment to discharge water.

In order to balance the pressure, the top side wall of the main control chamber 11 is provided with an air pressure chamber 21, and the air pressure chamber 21 communicates with the main control chamber 11 and the external atmosphere. The air pressure chamber 21 is provided with a rubber ball 22, so The diameter of the rubber ball 22 is greater than the diameter of the openings at both ends of the air pressure chamber 21 . It can effectively balance the air pressure and avoid the siphon affecting the use of the device. Preferably, the mechanism of the air pressure chamber 21 and the rubber ball 22 can be replaced by a one-way valve.

In order to achieve the effect of delay closing, the starting chamber 7 is divided into an upper chamber 76 and a lower chamber 74, and a starting piston 77 is slidably connected to the lower chamber 74, and the inside of the starting piston 77 is connected to the lower chamber. A delay chamber 73 is formed at the bottom of the chamber 74, and the water inlet end of the lower chamber 74 is located outside the starting piston 77, and a chamber sealing ring is arranged between the starting piston 77 and the upper chamber 76; A delay spring 75 is arranged in the delay cavity 73, and the delay spring 75 is opposed to the starting piston 77, so that the starting piston 77 has a movement tendency to squeeze the sealing ring of the chamber. Delayed closing can be realized to ensure that the main control piston 12 has enough time to complete the stroke, and the water pressure can continue to apply force to the main control piston 12 in the open state. Further, the top of the starting piston 77 is provided with an opening communicating with the delay chamber 73, the opening is provided with an opening sliding sleeve 71, and the lower end is provided with a gasket 72 for sealing the opening at the top of the starting piston 77 A closing spring is arranged on the outside of the opening sliding sleeve 71 , so that the opening sliding sleeve 71 has a movement tendency to squeeze the sealing gasket 72 . The time for starting the reset of the piston 77 can be controlled, so as to achieve delayed closing. When the button of the toilet is pressed, the opening sliding sleeve 71 is lifted up, so that the end of the starting piston 77 is opened. At this time, the water flows away from the bottom drain through the one-way valve, and the delay chamber 73 inside the starting piston 77 is activated. The pressure is equal to the external pressure. At this time, the water pressure outside the starting piston 77 is relatively large. Under the action of the water pressure, the starting piston 77 will be pushed down to squeeze the space of the delay chamber 73, so that the water flow in the delay chamber 73 is discharged. When the starting piston 77 moves downward, the lower chamber 74 communicates with the upper chamber 76 , and the water in the water inlet pipe 6 flows into the upper chamber 76 from the lower chamber 74 through the gap of the outer wall of the starting piston 77 . The opening sliding sleeve 71 begins to reset downward under the action of the closing spring, thereby closing the opening at the top of the delay chamber 73. At this time, the internal and external pressure of the starting piston 77 is equal, and under the action of the delay spring 75, the starting piston 77 is pushed up slowly. Starting, the inside of the delay chamber 73 is slowly filled with water through the delay hole 78 provided on the starting piston 77 to maintain the internal and external pressure balance. The chamber sealing ring is pushed between the upper chamber 76 and the lower chamber 74 after the starting piston 77 is lifted up, and the water flow channel 122 is closed. Start the size of the aperture that offers on the piston 77 and the length of time of the time delay that the elastic force size of delay spring 75 determines. After the setting of delay closing, the water flow has been flowing to the starting chamber 7, so that the water pressure can push the main control piston 12 to move in this direction, so as to ensure that the stroke of the main control piston 12 is long enough.

In order to switch back and forth between the first drain pipe 5 and the second drain pipe 4 to discharge water, a switch piston 31 is arranged between the first drain pipe 5 and the second drain pipe 4, and a switch control chamber 33 is arranged at the end of the switch control channel 14 One end of the switching piston 31 is slidably connected to the switching control chamber 33, and the switching piston 31 slides under the push of the water flow coming in from the switching control channel 14, so that the other end of the switching piston 31 controls the water inlet pipe 6 and the The first drain pipe 5 or the second drain pipe 4 communicates. Realize the switching between outer ring flushing and bottom jet flushing. Further, the switching piston 31 is sleeved with a switching spring 32, so that the switching piston 31 has a tendency to move toward the switching control water channel 14; when the main control piston 12 resets to one of the water flow channels 122 Located between the two sealing rings 13, when one of the water flow passages 122 straddles the two sealing rings 13 and communicates with the switching control chamber 33, the switching piston 31 resets under the restoring force of the switching spring 32 . The switching process is completed under the control of the main control piston 12. When the main control piston 12 is reset so that the water flow enters the switching control waterway 14, the switching piston 31 is pushed to move under the action of water pressure, so that the piston head blocks the waterway of the first drainage pipe 5 and opens the waterway of the second drainage pipe 4 simultaneously. At this time, the main control piston 12 continues to reset until the front water flow passage 122 crosses the two sealing rings 13 and communicates with the switching control chamber 33, and the back water flow passage 122 communicates with the switching control water passage 14. At this time, the switching piston 31 The side pressure is balanced, and the switching piston 31 resets under the action of the switching spring 32, so that the first drain pipe 5 drains water. Finally, when a water flow channel 122 in the back crosses the two sealing rings 13, the main control piston 12 is completely reset, and the drainage is stopped at this moment.

In order to be applicable to various water pressures, a water inlet piston 62 is slidably arranged in the water inlet pipe 6, and a water inlet channel 64 is arranged in the middle of the water inlet piston 62, and a pressure adjustment device is provided at the water inlet end of the water inlet channel 64. plug 61, the water inlet piston 62 is sleeved with a water inlet spring 63, so that the water inlet piston 62 has a movement tendency away from the pressure regulating plug 61, and as the water pressure increases, the water inlet Under the action of water pressure, the piston 62 moves toward the pressure regulating plug 61 to adjust the gap between the pressure regulating plug 61 and the water inlet channel 64 . Avoid damage to the device due to excessive water pressure, and at the same time can effectively save water. When the water pressure is high, the water inlet piston 62 will move downwards, thereby reducing the water inlet gap and keeping the water inlet relatively constant, which can effectively save water. It also ensures that excess pressure enters and damages the device.

The present invention has been described through preferred embodiments, and those skilled in the art know that various changes or equivalent substitutions can be made to these features and embodiments without departing from the spirit and scope of the present invention. The present invention is not limited by the specific embodiments disclosed here, and other embodiments falling within the claims of the application all belong to the protection of the present invention.

Claims

A tankless mechanical valve flushing system, characterized in that:

It includes a master control chamber (11), a master control piston (12) is slidably connected in the master control chamber (11), and an activation chamber (7) is communicated with one end of the master control chamber (11). The main control chamber (11) is provided with a return spring (17) to resist the main control piston (12), and when the activation chamber (7) is triggered to open, the main control piston (12) will Squeeze the return spring (17) to move towards the starting chamber (7) under the action;

One side of the main control chamber (11) is provided with a first drain pipe (5), a second drain pipe (4) and a water inlet pipe (6), and the first drain pipe (5) and the second drain pipe A channel switching mechanism is arranged between the tubes (4), and when the main control piston (12) moves toward the starting chamber (7), the first drain tube (5) and the water inlet tube (6) ) connected;

The main control piston (12) is provided with a water chamber (121), and the other end of the main control chamber (11) is connected with a switching control water channel (14). When the main control piston (12) is reset, the The water passage chamber (121) communicates with the switching control water channel (14) and the water inlet pipe (6), so as to drive the channel switching mechanism to make the second drain pipe (4) and the water inlet pipe (6) ) connected.
The tankless mechanical valve flushing system according to claim 1, characterized in that:

The outer side of the main control piston (12) is sleeved with an auxiliary piston (81), the auxiliary piston (81) is slidably connected to the main control piston (12), and the auxiliary piston (81) is blocked in the first Between a drain pipe (5) and the water inlet pipe (6), the outer wall of the main control piston (12) is provided with a limit step, so that when the main control piston (12) goes to the starting chamber (7) ) moves, the limit step pushes the auxiliary piston (81) away, and the auxiliary piston (81) is connected with a resistance spring (82), so that the auxiliary piston (81) has a The movement trend of chamber (7) movement.
The tankless mechanical valve flushing system according to claim 1, characterized in that:

Sealing rings (13) are provided on both sides of the end of the switching control water channel (14) connected to the main control piston (12), and the main control piston (12) is in sliding connection with the seal;

The side wall of the water passage chamber (121) is provided with two water flow channels (122) along the length direction. ), the water flow flows from the water inlet pipe (6) through the water passage chamber (121) into the switching control water channel (14).
The tankless mechanical valve flushing system according to claim 2, characterized in that:

The center of the main control chamber (11) is provided with a guide rod (16), the main control piston (12) is slidably connected to the guide rod (16), and the guide rod (16) is connected to the main control rod (16). The piston (12) is provided with a water gap, and the middle part of the main control piston (12) is provided with a limit boss (15). When the master control piston (12) moves to the bottom end, the limit boss (15) offset against the end of the guide rod (16);

The end of the main control piston (12) is provided with a piston head, and when the main control piston (12) moves to the top, the end surface of the piston head is against the auxiliary piston (81), and the auxiliary piston ( 81) Cutting off the passage between the first drain pipe (5) and the water inlet pipe (6).
The tankless mechanical valve flushing system according to claim 1, characterized in that:

The top side wall of the main control chamber (11) is provided with an air pressure chamber (21), the air pressure chamber (21) communicates with the main control chamber (11) and the external atmosphere, and the air pressure chamber (21) is provided with A rubber ball (22) is arranged, and the diameter of the rubber ball (22) is larger than the diameter of the openings at both ends of the air pressure chamber (21).
The tankless mechanical valve flushing system according to claim 1, characterized in that:

The starting chamber (7) is divided into an upper chamber (76) and a lower chamber (74), and a starting piston (77) is slidably connected to the lower chamber (74), and the inside of the starting piston (77) A delay chamber (73) is formed with the bottom of the lower chamber (74), the water inlet end of the lower chamber (74) is located outside the starting piston (77), and the starting piston (77) is connected to the A chamber sealing ring is arranged between the upper chambers (76);

A delay spring (75) is arranged in the delay chamber (73), and the delay spring (75) is opposed to the starting piston (77), so that the starting piston (77) has the ability to squeeze the Movement tendency of chamber seals.
The tankless mechanical valve flushing system according to claim 6, characterized in that:

The top of the starting piston (77) is provided with an opening communicating with the delay chamber (73), the opening is provided with an opening sliding sleeve (71), and the lower end is provided with a seal for sealing the top of the starting piston (77). The sealing gasket (72) of the opening, a closing spring is arranged on the outside of the opening sliding sleeve (71), so that the opening sliding sleeve (71) has a movement tendency to squeeze the sealing gasket (72).
The tankless mechanical valve flushing system according to claim 3, characterized in that:

A switch piston (31) is arranged between the first drain pipe (5) and the second drain pipe (4), and a switch control cavity (33) is arranged at the end of the switch control water channel (14), and the switch piston ( 31) One end is slidably connected to the switching control cavity (33), and the switching piston (31) slides under the push of the water flow coming in from the switching control channel (14), so that the other end of the switching piston (31) controls the The water pipe (6) communicates with the first drain pipe (5) or the second drain pipe (4).
The tankless mechanical valve flushing system according to claim 8, characterized in that:

A switching spring (32) is sleeved on the switching piston (31), so that the switching piston (31) has a tendency to move toward the switching control water channel (14); when the main control piston (12) resets When one of the water flow passages (122) is located between the two seal rings (13), and one of the water flow passages (122) straddles the two seal rings (13) and communicates with the switching control chamber (33) , the switching piston (31) returns under the restoring force of the switching spring (32).
The tankless mechanical valve flushing system according to claim 1, characterized in that:

A water inlet piston (62) is slidably arranged in the water inlet pipe (6), a water inlet channel (64) is arranged in the middle of the water inlet piston (62), and the water inlet end of the water inlet channel (64) is provided with a A pressure regulating plug (61), the water inlet piston (62) is sleeved with a water inlet spring (63), so that the water inlet piston (62) has a movement tendency away from the pressure regulating plug (61), As the water pressure increases, the water inlet piston (62) moves toward the pressure regulating plug (61) under the action of the water pressure to adjust the pressure regulating plug (61) and the inlet Gap of water channel (64).