Flushing and pressure reducing integrated valve

Abstract

The application discloses a flush pressure relief integrated valve, which comprises a main valve body, a water inlet pipe arranged on the main valve body, a pair of water outlet pipes arranged on both sides of the water inlet pipe, a connecting channel and a back pressure cavity arranged in the main valve body, a pressure relief control assembly arranged in the main valve body, a flush electromagnetic valve and an upper flush pressure relief flow channel arranged on the top of the installation cover of the pressure relief control assembly, a pressure relief flow channel arranged in the water inlet pipe, a pressure relief electromagnetic valve arranged at one end of the pressure relief flow channel, a pressure relief assembly arranged at the other end of the pressure relief flow channel, a vacuum pressure relief mechanism arranged at the open end of the pressure relief valve body, a backwater prevention seat and a vacuum cover body arranged in the vacuum pressure relief mechanism, a pressure relief pipeline arranged on the side surface of the pressure relief valve body, and the open end of the connecting channel being communicated with the vacuum cover body. The application controls the on-off of water flow through the flush electromagnetic valve, and discharges the excess water flow in the main valve body through the vacuum pressure relief mechanism arranged above the pressure relief assembly, so that the pressure relief effect is stable and reliable, and the main valve body simultaneously has the flush pressure relief function.

Description

Technical Field

[0001] This invention belongs to the field of solenoid valves, and specifically relates to a flushing and pressure reducing integrated valve. Background Technology

[0002] Flushing valves are commonly used in smart toilets. Existing flushing valves generally consist of a pulse solenoid valve body and a pressure-reducing mechanism. The pulse solenoid valve body and the pressure-reducing mechanism are connected via piping, resulting in a relatively large overall structure and limited installation. Furthermore, the pulse solenoid valve body often has a sealing diaphragm, and the large area of ​​the diaphragm contributes to the large size of the pulse solenoid valve body, further increasing the overall size of the flushing valve and reducing its versatility. Secondly, the pressure-reducing mechanism in existing flushing valves is complex. It typically includes a pull rod and a pressure-reducing valve body; the connection between the pressure-reducing valve body and the main valve body is secured with screws. This restricts the movement space of the pull rod within the pressure-reducing valve body, leading to poor pressure reduction when water pressure is unstable and a risk of excessive pressure when the flushing valve is closed. Therefore, a flushing and pressure-reducing integrated valve is needed to overcome these difficulties. Summary of the Invention

[0003] This invention addresses the problems existing in the prior art by designing an integrated flushing and pressure reducing valve. The invention incorporates a pressure relief control component and a flushing solenoid valve on the main valve body to control the flow of water. A pressure reducing channel is provided within the main valve body, with a pressure reducing solenoid valve and a pressure reducing component installed at both ends of the channel. Excess water flow within the main valve body is discharged through a vacuum pressure relief mechanism above the pressure reducing component. The pressure reducing effect is stable and reliable, and the main valve body simultaneously possesses flushing and pressure reducing functions.

[0004] The objective of this invention is achieved through the following technical solution: a flushing and pressure-reducing integrated valve, comprising a main valve body, an inlet pipe on the main valve body, and paired outlet pipes on both sides of the inlet pipe; a connecting channel for connecting the inlet pipe and the outlet pipes within the main valve body; a back pressure chamber between the inlet pipe and the connecting channel; and a pressure relief control assembly within the main valve body for controlling the opening and closing of the back pressure chamber and the connecting channel. The pressure relief control assembly includes a mounting cover and an elastic seal for sealing the connecting channel. A flushing solenoid valve for controlling the elastic deformation of the elastic seal is located above the mounting cover. The mounting cover is also provided with an upward pressure relief channel connected to the water outlet pipe; the water inlet pipe is provided with a pressure reducing channel, one end of which is provided with a pressure reducing solenoid valve, and the other end of which is provided with a pressure reducing assembly. The pressure reducing assembly includes a pressure reducing valve body and a pull rod. The open end of the pressure reducing valve body is provided with a vacuum pressure relief mechanism. The vacuum pressure relief mechanism includes a backflow prevention seat and a vacuum cover. The backflow prevention seat is located between the open end of the pressure reducing valve body and the vacuum cover. The backflow prevention seat is provided with a first sealing gasket. The side of the pressure reducing valve body is provided with a pressure reducing pipeline, and the vacuum cover is connected to the open end of the connecting channel.

[0005] Preferably, the pressure relief control assembly further includes a sealing ring bracket and a helical spring. The elastic seal is disc-shaped, with its edge abutting the opening end of the main valve body and the water inlet end of the connecting channel. The sealing ring bracket is detachably connected to the elastic seal and faces the mounting cover. The sealing ring bracket has a back pressure channel. The end of the helical spring has an extension shaft that passes through the back pressure channel. One end of the helical spring abuts against the mounting cover, and the other end abuts against the sealing ring bracket. The mounting cover has a water passage, one end of which communicates with the upper flushing pressure relief channel, and the other end of which has a flushing solenoid valve.

[0006] When the flushing solenoid valve is not energized, the water passage is closed. Water from the inlet pipe flows into the back pressure chamber through the back pressure channel. The water only accumulates in the back pressure chamber, where the pressure is high, squeezing the elastic seal. The elastic seal then presses against the inlet end of the connecting channel, keeping the main valve body closed. When the flushing solenoid valve is energized, the water passage opens, reducing the water pressure in the back pressure chamber. The elastic seal deforms, moving away from the inlet pipe of the connecting channel. Water then flows into the connecting channel through the inlet pipe and then into the outlet pipe. Because the helical spring has an extension shaft, when the elastic seal deforms, the extension shaft moves axially relative to the back pressure channel, preventing blockage of the back pressure channel. When the flushing solenoid valve is energized, the water passage and the upper flushing pressure relief passage are connected. The upper flushing pressure relief passage is connected to the outlet pipe. The water in the back pressure chamber will enter the outlet pipe along the upper flushing pressure relief passage. The water pressure in the back pressure chamber will drop rapidly. The elastic seal will deform more, and the water can quickly enter the outlet pipe from the inlet pipe.

[0007] Preferably, the sealing ring bracket has a limiting part in the middle, and the limiting part has protruding parts at both ends. Both the limiting part and the protruding parts are connected to the elastic seal. One of the protruding parts has a back pressure channel, and the extension shaft is inserted into the back pressure channel and extends toward the mounting cover. The inner diameter of the back pressure channel is larger than the outer diameter of the extension shaft, and the extension shaft is set perpendicular to the mounting cover.

[0008] By incorporating a limiting part and an outward protrusion, the elastic seal can be securely installed on the sealing ring bracket; a back pressure channel is provided on the outward protrusion to facilitate the insertion of the extension shaft. The sealing ring bracket also facilitates the limiting of the helical spring, confining it between the sealing ring bracket and the mounting cover.

[0009] Preferably, the mounting cover has a water inlet, one end of which is connected to the back pressure chamber and the other end to the water passage. A flushing solenoid valve is located at the top of the water passage to control the connection between the upward flushing pressure relief passage and the water inlet. Steel balls for sealing are located at both ends of the upward flushing pressure relief passage, and a main pressure relief passage connected to the outlet pipe is located at the end of the upward flushing pressure relief passage near the steel balls. The flushing solenoid valve includes a first encapsulated coil, a first iron core, a first spring, and a first rubber core. A connection is provided between the first encapsulated coil and the mounting cover. The first iron plate, the first iron core is set inside the first encapsulated coil, the first spring is sleeved and installed on the first iron core, and the end of the first iron core is provided with a first rubber core; when the first encapsulated coil is energized, the first iron core drives the first rubber core away from the opening end of the water flow channel; the edge of the mounting cover abuts against the edge of the elastic seal, and the mounting cover is installed on the main valve body by screws; the middle of the mounting cover is provided with a pair of strip-shaped protrusions, the strip-shaped protrusions are respectively set on both sides of the pressure reducing valve body, and the end face of the strip-shaped protrusions fits against the pressure reducing valve body.

[0010] When the flushing solenoid valve is de-energized, the first rubber core rests against the water passage, thus closing the water passage and preventing water in the back pressure chamber from entering the upper flushing pressure relief passage through the inlet. When the flushing solenoid valve is energized, the first iron core drives the first rubber core to disengage from the water passage, opening the water passage. Water in the back pressure chamber then enters the water passage through the inlet, then the upper flushing pressure relief passage, and finally the main pressure relief passage, which connects to the outlet pipe, causing a drop in pressure in the back pressure chamber. At this time, the first spring is compressed, and the water pressure in the back pressure chamber drops immediately. This causes the elastic seal to deform, and the helical spring to compress. When the elastic seal deforms, the connecting channel opens, allowing water to quickly enter from the inlet pipe. When the flushing solenoid valve is de-energized, the first spring resets, the water passage closes, and water re-gathers in the back pressure chamber. This blocks the connecting channel, closing the main valve body. By setting a strip-shaped protrusion on the mounting cover, the pressure reducing valve body is limited, preventing it from shaking relative to the main valve body during pressure reduction, thus making the connection between the pressure reducing valve body and the main valve body more stable and reliable.

[0011] Preferably, the pressure-reducing assembly further includes a diaphragm, a metal gasket, a locking nut, a pressure-reducing spring, an adjusting screw, a pressure-reducing sealing cap, and a bottom cap; the pressure-reducing valve body and the pressure-reducing sealing cap are connected by screws, and the side opening of the pressure-reducing valve body is provided with a bottom cap that is snapped into it; the diaphragm is sleeved and installed at the end of the pull rod, and the two ends of the diaphragm are provided with metal gaskets that fit against it; the end of the pull rod is provided with a locking nut that is threaded into it, and the locking nut fits against the metal gasket; the pressure-reducing sealing cap is provided with an adjusting screw that is threaded into it, and a pressure-reducing spring is provided between the adjusting screw and the pull rod, one end of the pressure-reducing spring abutting against the adjusting screw, and the other end abutting against the metal gasket at the end of the pull rod; the pressure-reducing valve body is provided with a water passage hole, and the pull rod is inserted into the water passage hole; when the pressure-reducing solenoid valve is energized, the end of the pressure-reducing flow channel is connected to the water passage hole; the pressure-reducing valve body is located between the main valve body and the vacuum cover body, and the vacuum cover body is snapped into the main valve body.

[0012] When the water pressure in the main valve body is too high, the pressure-reducing solenoid valve opens, and water flows into the pressure-reducing channel along the inlet pipe, then into the pressure-reducing valve body, thus pushing the lever. Because the metal washer on the lever is held in place by the pressure-reducing spring between it and the adjusting screw, the water flow area between the lever and the water passage hole decreases when the water pressure pushes the lever. When the water pressure is high, the water flow velocity through the water passage hole is faster, thus keeping the water flow rate essentially constant. After passing through the water passage hole, the water impacts the anti-backflow seat upwards, and the first sealing gasket blocks the vacuum cover, allowing the water in the pressure-reducing valve body to flow out along the pressure-reducing pipe, reducing the water pressure in the main valve body. When the water pressure in the main valve body is low, the water flow area between the lever and the water passage hole increases, and the water flow velocity through the water passage hole is slower, thus keeping the water flow rate essentially constant. The distance between the adjusting screw and the metal washer can be easily adjusted by rotating the adjusting screw, thus adjusting the elastic deformation of the pressure-reducing spring and facilitating water pressure regulation. The pressure reducing valve body is positioned between the main valve body and the vacuum cover, which allows the pressure reducing valve body to remain fixed to the main valve body.

[0013] Preferably, a first O-ring for waterproofing is provided between the pull rod and the bottom cover, and a second O-ring for waterproofing is provided between the bottom cover and the pressure reducing valve body; a circular through hole is provided at the end of the pull rod facing the metal gasket, and a columnar through hole is provided at the end of the pull rod facing the bottom cover, the circular through hole and the columnar through hole are perpendicular to each other and communicate with each other; the bottom of the pressure reducing valve body is fitted with the main valve body, and the top of the pressure reducing valve body is fitted with the vacuum cover; a stop part is provided on the side of the main valve body, and the bottom cover is fitted with the stop part.

[0014] Water flows into the pressure-reducing valve body along the pressure-reducing channel, then flows through the circular through-hole to the cylindrical through-hole, and finally converges on the bottom cover. This causes the water to impact the pull rod, moving it towards the adjusting screw. The bottom cover is secured against the abutment, and because the abutment is snapped into the valve body, the pull rod has more room to move, resulting in better pressure reduction. Simultaneously, with the bottom cover against the abutment, the pressure-reducing assembly is more stable during pressure reduction, making the process more reliable.

[0015] Preferably, the pressure-reducing solenoid valve includes a second encapsulated coil, a second iron core, a second spring, and a second rubber core. A second iron plate is provided between the second encapsulated coil and the main valve body to connect the two. The second iron core is disposed inside the second encapsulated coil, and the second spring is sleeved and installed on the second iron core. The second rubber core is provided at the end of the second iron core. When the second encapsulated coil is energized, the second iron core drives the second rubber core away from the opening end of the pressure-reducing flow channel. The pressure-reducing flow channel is interconnected with the water passage hole, and the water passage hole is interconnected with the vacuum pressure relief mechanism.

[0016] When the pressure-reducing solenoid valve is energized, the second iron core moves the second rubber core away from the pressure-reducing flow channel, opening the flow channel. This allows water to flow into the valve body through the inlet pipe, pushing the lever and achieving pressure reduction. Simultaneously, the valve body is connected to a vacuum relief mechanism, allowing water to drain out along the pressure-reducing pipeline, resulting in effective and reliable pressure reduction.

[0017] Preferably, the vacuum pressure relief mechanism further includes a pressure relief cover, a pressure relief spring, a pressure relief seat, a valve core gasket, and a first sealing gasket; the first sealing gasket is disposed on the outer layer of the anti-backflow seat, and the anti-backflow seat is disposed between the open end of the pressure reducing valve body and the vacuum cover; when the anti-backflow seat moves upward due to water pressure impact, the first sealing gasket and the open end of the vacuum cover fit together; the bottom of the anti-backflow seat is provided with a first through hole, the first through hole is provided with a valve core gasket, the valve core gasket is provided with a pressure relief seat, and the pressure relief cover is provided above the pressure relief seat, the pressure relief cover and the anti-backflow seat are detachably connected; a pressure relief spring is provided between the pressure relief cover and the pressure relief seat, one end of the pressure relief spring abuts against the pressure relief cover, and the other end abuts against the pressure relief seat; the vacuum cover is snap-fitted to the main valve body, the vacuum cover extends into the pressure reducing valve body, and a third O-ring is provided between the vacuum cover and the pressure reducing valve body to seal both.

[0018] When water flows upwards through the water passage, it impacts the anti-backflow seat. As the anti-backflow seat moves upwards, the first sealing gasket comes into contact with the opening of the vacuum cover. This forces the water to flow only along the pressure-reducing pipe on the side of the pressure-reducing valve body. When the water pressure is high, some water flows out from the pressure-reducing pipe, while some water flows along the first through-hole on the anti-backflow seat, impacting the valve core gasket. The valve core gasket and the pressure relief seat simultaneously approach the pressure relief cover. This allows the water to flow along the anti-backflow seat into the vacuum cover, and then along the vacuum cover into the connecting channel. This synchronizes the reduction of water pressure within the pressure-reducing valve body, resulting in a good pressure-reducing effect.

[0019] Preferably, the vacuum cover has several evenly distributed guide protrusions inside its open end, and the outer layer of the anti-backflow seat is in contact with the guide protrusions; the inner wall of the anti-backflow seat has several evenly distributed limiting protrusions, and the outer wall of the pressure relief seat is in contact with the limiting protrusions; the side wall of the anti-backflow seat has paired limiting holes, and the outer wall of the pressure relief cover has paired cylindrical protrusions, which are disposed in the limiting holes.

[0020] By setting guide protrusions, the anti-backflow seat can only move up and down along the direction of the guide protrusions. By setting limit protrusions, the pressure relief seat can only move up and down along the axis of the limit protrusions. The cylindrical protrusion on the pressure relief cover is engaged in the limit hole, so that the pressure relief cover can be stably connected to the anti-backflow seat.

[0021] Preferably, the vacuum cover is provided with a vent cover that is snapped together with it, and the vacuum cover is in communication with the connecting channel; a movable water sealing component is provided between the connecting channel and the vacuum cover, and a second sealing gasket and a third sealing gasket are respectively provided on the two end faces of the movable water sealing component; the second sealing gasket and the third sealing gasket are arranged side by side and adjacent to each other, with the second sealing gasket facing the vacuum cover and the third sealing gasket facing the opening end of the connecting channel.

[0022] When water flows from the connecting channel into the outlet pipe, the water pressure causes the movable sealing element to move upwards, thus blocking the vacuum cover with the second sealing gasket. Water can then only enter the outlet pipe along the connecting channel. When there is no water in the connecting channel, a negative pressure exists within it. Under the influence of gravity, the movable sealing element blocks the connecting channel through the third sealing gasket, preventing water from flowing back into the connecting channel from the outlet pipe.

[0023] Compared with existing technologies, this invention has the following advantages: This invention sets up a pressure relief control component between the connecting channel and the back pressure chamber of the main valve body. The opening and closing of the water flow channel is controlled by a flushing solenoid valve, causing changes in the water pressure within the back pressure chamber. This causes elastic deformation of the elastic seal, opening or closing the connecting channel when the elastic seal deforms, thus facilitating control of the main valve body's opening and closing. Because the mounting cover has an upward pressure relief channel, when the flushing solenoid valve opens, water enters the outlet pipe along the upward pressure relief channel. This causes a rapid drop in water pressure within the back pressure chamber, allowing water to immediately enter the connecting channel from the inlet pipe and then flow along the connecting channel into the outlet pipe, resulting in excellent flushing performance. When the water pressure within the main valve body is too high, the pressure-reducing solenoid valve opens, connecting the inlet pipe to the pressure-reducing channel. Water then enters the pressure-reducing component to reduce pressure, impacting the vacuum cover and flowing out through the pressure-reducing pipeline, resulting in good and reliable pressure reduction. Therefore, this invention simultaneously possesses pressure-reducing and flushing functions. The pressure-reducing and flushing structures are integrated into a single main valve body, resulting in a more compact structure, avoiding unnecessary pipeline connections, smoother water flow, and better versatility. Attached Figure Description

[0024] Figure 1 This is a perspective view of the present invention;

[0025] Figure 2 This is a perspective view of the invention from another angle;

[0026] Figure 3 This is the front view of the present invention;

[0027] Figure 4 This is a top view of the present invention;

[0028] Figure 5 for Figure 3 A sectional view taken from point AA;

[0029] Figure 6 for Figure 4 A sectional view taken from point BB;

[0030] Figure 7 for Figure 3 A sectional view taken from point CC;

[0031] Figure 8 for Figure 3 A sectional view taken from point DD;

[0032] Figure 9 for Figure 3 A sectional view taken from the EE section;

[0033] Figure 10 Exploded view of the pressure relief control components;

[0034] Figure 11 Internal structure diagram of the mounting cover;

[0035] Figure 12 A three-dimensional view of the main valve body;

[0036] Figure 13 Exploded view of the vacuum relief mechanism;

[0037] Figure 14 Internal structure diagram of the anti-return water seat;

[0038] Figure 15 This is a 3D view of the pull rod.

[0039] Markings in the diagram: 1. Main valve body; 2. Inlet pipe; 3. Outlet pipe; 4. Connecting channel; 5. Pressure relief control assembly; 51. Mounting cover; 52. Elastic seal; 53. Sealing ring bracket; 531. Limiting part; 532. Outward protrusion; 54. Helical spring; 55. Back pressure channel; 56. Extension shaft; 57. Water passage; 58. Water inlet; 59. Main pressure relief passage; 6. Flushing solenoid valve; 61. First encapsulated coil; 62. First iron core; 63. First spring; 64. First rubber core; 65. First iron plate; 7. Pressure reducing solenoid valve; 71. Second encapsulated coil; 72. Second iron core; 73. Second spring; 74. Second rubber core; 75. Second iron plate; 8. Pressure reducing assembly; 81. Pressure reducing valve body; 811. Water passage hole; 82. Pull rod; 821. Circular through hole; 822. Columnar... 83. Through hole; 84. Diaphragm; 85. Metal gasket; 86. Locking nut; 87. Pressure relief spring; 88. Adjusting screw; 89. Pressure relief sealing cover; 90. Bottom cover; 91. Vacuum pressure relief mechanism; 92. Anti-backflow seat; 93. Vacuum cover body; 94. First sealing gasket; 95. Pressure relief cover; 96. Pressure relief spring; 97. Valve core gasket; 98. First through hole; 10. Back pressure chamber; 11. 11. Pressure relief channel; 12. Pressure reducing channel; 13. Pressure reducing pipeline; 14. Steel ball; 15. Strip-shaped protrusion; 16. First O-ring; 17. Second O-ring; 18. Abutment part; 19. Third O-ring; 20. Guide protrusion; 21. Limiting protrusion; 22. Limiting hole; 23. Cylindrical protrusion; 24. Vent cover; 25. Movable water sealing component; 26. Second sealing gasket; 27. Third sealing gasket. Detailed Implementation

[0040] The present invention will be further described below with reference to the embodiments illustrated in the accompanying drawings:

[0041] like Figures 1 to 15As shown, this embodiment discloses a flushing and pressure-reducing integrated valve, including a main valve body 1, an inlet pipe 2 on the main valve body 1, and a pair of outlet pipes 3 on both sides of the inlet pipe 2. The main valve body 1 has a connecting channel 4 for connecting the inlet pipe 2 and the outlet pipes 3. A back pressure chamber 10 is provided between the inlet pipe 2 and the connecting channel 4. The main valve body 1 has a pressure relief control assembly 5 for controlling the opening and closing of the back pressure chamber 10 and the connecting channel 4. The pressure relief control assembly 5 includes a mounting cover 51 and an elastic seal 52 for sealing the connecting channel 4. A flushing solenoid valve 6 is provided above the mounting cover 51 for controlling the elastic deformation of the elastic seal 52. The mounting cover 51 also has a... The outlet pipe 3 is connected to the upward pressure relief channel 11; the inlet pipe 2 is provided with a pressure reducing channel 12, one end of the pressure reducing channel 12 is provided with a pressure reducing solenoid valve 7, and the other end of the pressure reducing channel 12 is provided with a pressure reducing assembly 8. The pressure reducing assembly 8 includes a pressure reducing valve body 81 and a pull rod 82. The open end of the pressure reducing valve body 81 is provided with a vacuum pressure relief mechanism 9; the vacuum pressure relief mechanism 9 includes a backflow prevention seat 91 and a vacuum cover 92. The backflow prevention seat 91 is located between the open end of the pressure reducing valve body 81 and the vacuum cover 92. The backflow prevention seat 91 is provided with a first sealing gasket 93; the side of the pressure reducing valve body 81 is provided with a pressure reducing pipe 13, and the vacuum cover 92 is connected to the open end of the connecting channel 4.

[0042] The pressure relief control assembly 5 also includes a sealing ring bracket 53 and a helical spring 54. The elastic seal 52 is disc-shaped, and its edge abuts against the opening end of the main valve body 1. The elastic seal 52 abuts against the water inlet end of the connecting channel 4. The sealing ring bracket 53 is detachably connected to the elastic seal 52 and is positioned towards the mounting cover 51. The sealing ring bracket 53 is provided with a back pressure channel 55. The end of the helical spring 54 is provided with an extension shaft 56, which passes through the back pressure channel 55. One end of the helical spring 54 abuts against the mounting cover 51, and the other end abuts against the sealing ring bracket 53. The mounting cover 51 is provided with a water passage 57. One end of the water passage 57 is connected to the upper flushing pressure relief channel 11, and the other end of the water passage 57 is provided with a flushing solenoid valve 6. The sealing ring bracket 53 has a limiting part 531 in the middle, and the two ends of the limiting part 531 have outward protrusions 532. Both the limiting part 531 and the outward protrusions 532 are connected to the elastic seal 52. One of the outward protrusions 532 has a back pressure channel 55. The extension shaft 56 is inserted into the back pressure channel 55 and extends toward the mounting cover 51. The inner diameter of the back pressure channel 55 is larger than the outer diameter of the extension shaft 56. The extension shaft 56 is set perpendicular to the mounting cover 51. The mounting cover 51 has a water inlet 58, one end of which is connected to the back pressure chamber 10, and the other end is connected to the water passage 57. The top of the water passage 57 is equipped with a flushing solenoid valve 6 that controls the connection between the upward flushing pressure relief passage 11 and the water inlet 58. Both ends of the upward flushing pressure relief passage 11 are equipped with steel balls 14 for sealing, and the end of the upward flushing pressure relief passage 11 near the steel balls 14 is equipped with a main pressure relief passage 59 connected to the water outlet pipe 3. The flushing solenoid valve 6 includes a first encapsulated coil 61, a first iron core 62, a first spring 63, and a first rubber core 64. A first connecting element is provided between the first encapsulated coil 61 and the mounting cover 51. The iron plate 65, the first iron core 62 is disposed inside the first plastic-sealed coil 61, the first spring 63 is sleeved and installed on the first iron core 62, and the end of the first iron core 62 is provided with a first rubber core 64; when the first plastic-sealed coil 61 is energized, the first iron core 62 drives the first rubber core 64 away from the opening end of the water flow channel 57; the edge of the mounting cover 51 abuts against the edge of the elastic seal 52, and the mounting cover 51 is installed on the main valve body 1 by screws; the mounting cover 51 is provided with a pair of strip-shaped protrusions 15 in the middle, the strip-shaped protrusions 15 are respectively disposed on both sides of the pressure reducing valve body 81, and the end face of the strip-shaped protrusions 15 is in contact with the pressure reducing valve body 81.

[0043] The pressure-reducing assembly 8 further includes a diaphragm 83, a metal gasket 84, a locking nut 85, a pressure-reducing spring 86, an adjusting screw 87, a pressure-reducing sealing cap 88, and a bottom cap 89; the pressure-reducing valve body 81 and the pressure-reducing sealing cap 88 are connected by screws, and the side opening end of the pressure-reducing valve body 81 is provided with a bottom cap 89 that is snapped into it; the diaphragm 83 is sleeved and installed at the end of the pull rod 82, and the two ends of the diaphragm 83 are provided with metal gaskets 84 that fit against it; the end of the pull rod 82 is provided with a locking nut 85 that is threaded into it, and the locking nut 85 fits against the metal gasket 84; The pressure-reducing sealing cover 88 is provided with an adjusting screw 87 threadedly connected to it. A pressure-reducing spring 86 is provided between the adjusting screw 87 and the pull rod 82. One end of the pressure-reducing spring 86 abuts against the adjusting screw 87, and the other end abuts against the metal washer 84 at the end of the pull rod 82. The pressure-reducing valve body 81 is provided with a water passage hole 811, and the pull rod 82 is inserted into the water passage hole 811. When the pressure-reducing solenoid valve 7 is energized, the end of the pressure-reducing flow channel 12 is connected to the water passage hole 811. The pressure-reducing valve body 81 is located between the main valve body 1 and the vacuum cover 92, and the vacuum cover 92 is snap-fitted to the main valve body 1. A first O-ring 16 for waterproofing is provided between the pull rod 82 and the bottom cover 89, and a second O-ring 17 for waterproofing is provided between the bottom cover 89 and the pressure reducing valve body 81; a circular through hole 821 is provided at the end of the pull rod 82 facing the metal gasket 84, and a columnar through hole 822 is provided at the end of the pull rod 82 facing the bottom cover 89. The circular through hole 821 and the columnar through hole 822 are perpendicular to each other and communicate with each other; the bottom of the pressure reducing valve body 81 is fitted with the main valve body 1, and the top of the pressure reducing valve body 81 is fitted with the vacuum cover 92; a stop part 18 is provided on the side of the main valve body 1, and the bottom cover 89 is fitted with the stop part 18. The pressure-reducing solenoid valve 7 includes a second encapsulated coil 71, a second iron core 72, a second spring 73, and a second rubber core 74. A second iron plate 75 is provided between the second encapsulated coil 71 and the main valve body 1 to connect the two. The second iron core 72 is disposed inside the second encapsulated coil 71, and the second spring 73 is sleeved on the second iron core 72. The second rubber core 74 is provided at the end of the second iron core 72. When the second encapsulated coil 71 is energized, the second iron core 72 drives the second rubber core 74 away from the opening end of the pressure-reducing flow channel 12. The pressure-reducing flow channel 12 is interconnected with the water passage hole 811, and the water passage hole 811 is interconnected with the vacuum pressure relief mechanism 9.

[0044] The vacuum pressure relief mechanism 9 further includes a pressure relief cover 94, a pressure relief spring 95, a pressure relief seat 96, a valve core gasket 97, and a first sealing gasket 93; the first sealing gasket 93 is disposed on the outer layer of the anti-backflow seat 91, which is disposed between the opening end of the pressure reducing valve body 81 and the vacuum cover 92; when the water pressure impacts the anti-backflow seat 91 and moves upward, the first sealing gasket 93 and the opening end of the vacuum cover 92 are in contact with each other; the bottom of the anti-backflow seat 91 is provided with a first through hole 98, and the valve core gasket 97 is disposed on the first through hole 98. A pressure relief seat 96 is provided on the 97, and a pressure relief cover 94 is provided above the pressure relief seat 96. The pressure relief cover 94 is detachably connected to the anti-backflow seat 91. A pressure relief spring 95 is provided between the pressure relief cover 94 and the pressure relief seat 96. One end of the pressure relief spring 95 abuts against the pressure relief cover 94, and the other end abuts against the pressure relief seat 96. The vacuum cover 92 is snap-fitted to the main valve body 1. The vacuum cover 92 extends into the pressure reducing valve body 81. A third O-ring 19 is provided between the vacuum cover 92 and the pressure reducing valve body 81 to seal both. The vacuum cover 92 has several evenly distributed guide protrusions 20 inside its open end, and the outer layer of the anti-backflow seat 91 is in contact with the guide protrusions 20; the inner wall of the anti-backflow seat 91 has several evenly distributed limiting protrusions 21, and the outer wall of the pressure relief seat 96 is in contact with the limiting protrusions 21; the side wall of the anti-backflow seat 91 has paired limiting holes 22, and the outer wall of the pressure relief cover 94 has paired cylindrical protrusions 23, which are disposed in the limiting holes 22. The vacuum cover 92 is provided with a vent cover 24 that is snapped to it, and the vacuum cover 92 is in communication with the connecting channel 4; a movable water sealing component 25 is provided between the connecting channel 4 and the vacuum cover 92, and a second sealing gasket 26 and a third sealing gasket 27 are respectively provided on the two end faces of the movable water sealing component 25; the second sealing gasket 26 and the third sealing gasket 27 are arranged side by side and adjacent to each other, the second sealing gasket 26 is facing the vacuum cover 92, and the third sealing gasket 27 is facing the opening end of the connecting channel 4.

[0045] The specific operation process of this embodiment is as follows: In the default state, the flushing solenoid valve 6 is in the closed state, and the main valve body 1 is also in the closed state. When flushing is required, the flushing solenoid valve 6 is energized, and the first iron core 62 will be attracted, thereby opening the water passage 57. Before the flushing solenoid valve 6 is energized, the water passage 57 is in the closed state, so the water in the inlet pipe 2 enters the back pressure chamber 10 along the back pressure channel 55. At this time, the water pressure in the back pressure chamber 10 is relatively large, and the water pressure causes the elastic seal 52 to abut against the water inlet end of the connecting channel 4, so the connecting channel 4 is in the open state, and the main valve body 1 cannot discharge water. When the flushing solenoid valve 6 opens the water flow channel 57, water flows along the water flow channel 57 into the upper pressure relief channel 11, then along the upper pressure relief channel 11 into the main pressure relief channel 59, and then along the main pressure relief channel 59 into the outlet pipe 3. The water pressure in the back pressure chamber 10 drops rapidly, the elastic seal 52 deforms and disengages from the inlet end of the connecting channel 4, and water then flows along the inlet pipe 2 into the connecting channel 4, and then along the connecting channel 4 into the outlet pipe 3. Because the main pressure relief channel 59 has a good pressure relief effect, the water flow can quickly enter the connecting channel 4 from the inlet pipe 2, resulting in a good flushing effect. When the flushing solenoid valve 6 is de-energized, the first rubber core 64 automatically blocks the water flow channel 57, and the water flow re-converges in the back pressure chamber 10 along the back pressure channel 55, while the elastic seal 52 blocks the inlet end of the connecting channel 4.

[0046] When the water pressure in the main valve body 1 is too high during use, the pressure-reducing solenoid valve 7 will open. Part of the water will then enter the pressure-reducing valve body 81 through the pressure-reducing channel 12, impacting the pull rod 82 within the valve body 81. This stabilizes the water flow. The water then continues to flow upwards along the water passage 811 and impacts the anti-backflow seat 91. The first sealing gasket 93 on the anti-backflow seat 91 will then block the vacuum cover 92, allowing water to flow out through the pressure-reducing pipe 13, thus achieving pressure reduction. When the water pressure in the pressure-reducing valve body 81 is still too high, some water flows out through the pressure-reducing pipe 13. The remaining water impacts the valve core gasket 97, causing it to detach from the pressure relief seat 96 and disengage from the first through hole 98 in the anti-backflow seat 91. This allows water to flow into the anti-backflow seat 91, then along it into the vacuum cover 92, and finally into the connecting channel 4, and then into the outlet pipe 3, thus achieving pressure reduction.

[0047] The specific embodiments described herein are merely illustrative of the spirit of the invention. Those skilled in the art to which this invention pertains may make various modifications or additions to the described specific embodiments or use similar methods to replace them, without departing from the spirit of the invention or exceeding the scope defined by the appended claims.

Claims

1. A flushing and pressure-reducing integrated valve, comprising a main valve body (1), an inlet pipe (2) provided on the main valve body (1), and a pair of outlet pipes (3) provided on both sides of the inlet pipe (2), characterized in that, The main valve body (1) is provided with a connecting channel (4) for connecting the inlet pipe (2) and the outlet pipe (3); a back pressure chamber (10) is provided between the inlet pipe (2) and the connecting channel (4); the main valve body (1) is provided with a pressure relief control component (5) for controlling the opening and closing of the back pressure chamber (10) and the connecting channel (4); the pressure relief control component (5) includes a mounting cover (51) and an elastic seal (52) for sealing the connecting channel (4); a flushing solenoid valve (6) for controlling the elastic deformation of the elastic seal (52) is provided above the mounting cover (51); and an upward flushing pressure relief channel (11) connected to the outlet pipe (3) is also provided on the mounting cover (51). The pressure relief control assembly (5) further includes a sealing ring bracket (53) and a helical spring (54). The elastic seal (52) is disc-shaped, and the edge of the elastic seal (52) abuts against the opening end of the main valve body (1). The elastic seal (52) abuts against the water inlet end of the connecting channel (4). The sealing ring bracket (53) is detachably connected to the elastic seal (52) and is positioned towards the mounting cover (51). The sealing ring bracket (53) is provided with a back pressure channel (55). The end of the helical spring (54) is provided with an extension shaft (56), which is inserted into the back pressure channel (55). One end of the helical spring (54) abuts against the mounting cover (51). The cover (51) is mounted on the other end, which rests against the sealing ring bracket (53). The cover (51) is provided with a water passage (57), one end of which is connected to the upper flushing pressure relief passage (11), and the other end of which is provided with a flushing solenoid valve (6). The inlet pipe (2) is provided with a pressure reducing passage (12), one end of which is provided with a pressure reducing solenoid valve (7), and the other end of which is provided with a pressure reducing assembly (8). The pressure reducing assembly (8) includes a pressure reducing valve body (81) and a pull rod (82). The open end of the pressure reducing valve body (81) is provided with a vacuum pressure relief mechanism (9). The pressure reducing assembly (8) also includes a diaphragm. The pressure reducing valve body (81) is connected to the pressure reducing sealing cover (88) by screws, and the side opening end of the pressure reducing valve body (81) is provided with a bottom cover (89) that is snapped to it; the diaphragm (83) is sleeved and installed at the end of the pull rod (82), and the two ends of the diaphragm (83) are provided with metal gaskets (84) that fit together with it; the end of the pull rod (82) is provided with a threaded anti-loosening nut (85) that is threaded to it, and the anti-loosening nut (85) and the metal gasket (84) fit together with each other;The pressure-reducing sealing cover (88) is provided with an adjusting screw (87) threaded to it. A pressure-reducing spring (86) is provided between the adjusting screw (87) and the pull rod (82). One end of the pressure-reducing spring (86) abuts against the adjusting screw (87), and the other end abuts against the metal washer (84) at the end of the pull rod (82). The pressure-reducing valve body (81) is provided with a water passage hole (811), and the pull rod (82) is inserted into the water passage hole (811). When the pressure-reducing solenoid valve (7) is energized, the end of the pressure-reducing flow channel (12) is connected to the water passage hole (811). (81) is disposed between the main valve body (1) and the vacuum cover (92), the vacuum cover (92) being snap-fitted to the main valve body (1); the vacuum pressure relief mechanism (9) includes a backflow prevention seat (91) and a vacuum cover (92), the backflow prevention seat (91) being disposed between the opening end of the pressure reducing valve body (81) and the vacuum cover (92), the backflow prevention seat (91) being provided with a first sealing gasket (93); the side of the pressure reducing valve body (81) is provided with a pressure reducing pipeline (13), the vacuum cover (92) being connected to the opening end of the connecting channel (4); the vacuum pressure relief mechanism (9) also includes a pressure relief valve. The pressure cap (94), pressure relief spring (95), pressure relief seat (96), valve core gasket (97), and first sealing gasket (93) are provided. The first sealing gasket (93) is disposed on the outer layer of the anti-backflow seat (91), which is disposed between the opening end of the pressure reducing valve body (81) and the vacuum cover (92). When the water pressure impacts the anti-backflow seat (91) and moves upward, the first sealing gasket (93) and the opening end of the vacuum cover (92) are in contact with each other. The bottom of the anti-backflow seat (91) is provided with a first through hole (98), and the valve core gasket (97) is provided on the first through hole (98). The valve core gasket (97) is provided with a pressure relief spring (95), and the valve core gasket (97) is provided with a pressure relief spring (96). A pressure relief seat (96) is provided with a pressure relief cover (94) above it. The pressure relief cover (94) is detachably connected to the anti-backflow seat (91). A pressure relief spring (95) is provided between the pressure relief cover (94) and the pressure relief seat (96). One end of the pressure relief spring (95) abuts against the pressure relief cover (94), and the other end abuts against the pressure relief seat (96). The vacuum cover (92) is snap-fitted to the main valve body (1). The vacuum cover (92) extends into the pressure reducing valve body (81). A third O-ring (19) is provided between the vacuum cover (92) and the pressure reducing valve body (81) to seal both.

2. The flushing and pressure-reducing integrated valve according to claim 1, characterized in that, The sealing ring bracket (53) has a limiting part (531) in the middle, and the two ends of the limiting part (531) have protruding parts (532). The limiting part (531) and the protruding parts (532) are both connected to the elastic seal (52). One of the protruding parts (532) has a back pressure channel (55). The extension shaft (56) is inserted into the back pressure channel (55) and extends toward the mounting cover (51). The inner diameter of the back pressure channel (55) is larger than the outer diameter of the extension shaft (56). The extension shaft (56) is set perpendicular to the mounting cover (51).

3. The flushing and pressure-reducing integrated valve according to claim 1, characterized in that, The mounting cover (51) is provided with a water inlet (58), one end of which is connected to the back pressure chamber (10), and the other end is connected to the water passage (57); the top of the water passage (57) is provided with a flushing solenoid valve (6) for controlling the opening and closing of the upward flushing pressure relief passage (11) and the water inlet (58); both ends of the upward flushing pressure relief passage (11) are provided with steel balls (14) for sealing, and the end of the upward flushing pressure relief passage (11) near the steel balls (14) is provided with a main pressure relief passage (59) connected to the water outlet pipe (3); the flushing solenoid valve (6) includes a first plastic-sealed coil (61), a first iron core (62), a first spring (63) and a first rubber core (64), and a first plastic-sealed coil (61) and the mounting cover (51) are provided with a first connecting element. An iron plate (65) is provided. The first iron core (62) is set inside the first plastic-sealed coil (61). The first spring (63) is sleeved on the first iron core (62). The end of the first iron core (62) is provided with a first rubber core (64). When the first plastic-sealed coil (61) is energized, the first iron core (62) drives the first rubber core (64) away from the opening end of the water passage (57). The edge of the mounting cover (51) abuts against the edge of the elastic seal (52), and the mounting cover (51) is installed on the main valve body (1) by screws. The mounting cover (51) is provided with a pair of strip protrusions (15) in the middle. The strip protrusions (15) are respectively set on both sides of the pressure reducing valve body (81), and the end face of the strip protrusions (15) is in contact with the pressure reducing valve body (81).

4. The flushing and pressure-reducing integrated valve according to claim 1, characterized in that, A first O-ring (16) for waterproofing is provided between the pull rod (82) and the bottom cover (89), and a second O-ring (17) for waterproofing is provided between the bottom cover (89) and the pressure reducing valve body (81); a circular through hole (821) is provided at the end of the pull rod (82) facing the metal gasket (84), and a columnar through hole (822) is provided at the end of the pull rod (82) facing the bottom cover (89). The circular through hole (821) and the columnar through hole (822) are perpendicular to each other and communicate with each other; the bottom of the pressure reducing valve body (81) is fitted with the main valve body (1), and the top of the pressure reducing valve body (81) is fitted with the vacuum cover body (92); the side of the main valve body (1) is provided with an abutment part (18), and the bottom cover (89) is fitted with the abutment part (18).

5. The flushing and pressure-reducing integrated valve according to claim 1, characterized in that, The pressure reducing solenoid valve (7) includes a second encapsulated coil (71), a second iron core (72), a second spring (73), and a second rubber core (74). A second iron plate (75) is provided between the second encapsulated coil (71) and the main valve body (1) to connect the two. The second iron core (72) is located inside the second encapsulated coil (71). The second spring (73) is sleeved on the second iron core (72). The end of the second iron core (72) is provided with the second rubber core (74). When the second encapsulated coil (71) is energized, the second iron core (72) drives the second rubber core (74) away from the opening end of the pressure reducing channel (12). The pressure reducing channel (12) is connected to the water passage hole (811). The water passage hole (811) is connected to the vacuum pressure relief mechanism (9).

6. The flushing and pressure-reducing integrated valve according to claim 1, characterized in that, The vacuum cover (92) has several evenly distributed guide protrusions (20) inside its opening end, and the outer layer of the anti-backflow seat (91) is in contact with the guide protrusions (20); the inner wall of the anti-backflow seat (91) has several evenly distributed limiting protrusions (21), and the outer wall of the pressure relief seat (96) is in contact with the limiting protrusions (21); the side wall of the anti-backflow seat (91) has a pair of limiting holes (22), and the outer wall of the pressure relief cover (94) has a pair of cylindrical protrusions (23), and the cylindrical protrusions (23) are located inside the limiting holes (22).

7. The flushing and pressure-reducing integrated valve according to claim 1, characterized in that, The vacuum cover (92) is provided with a vent cover (24) that is snapped to it. The vacuum cover (92) is connected to the connecting channel (4). A movable water sealing element (25) is provided between the connecting channel (4) and the vacuum cover (92). A second sealing gasket (26) and a third sealing gasket (27) are provided on the two end faces of the movable water sealing element (25). The second sealing gasket (26) and the third sealing gasket (27) are arranged side by side and adjacent to each other. The second sealing gasket (26) is positioned towards the vacuum cover (92), and the third sealing gasket (27) is positioned towards the opening end of the connecting channel (4).

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