High-pressure self-closing water-saving valve

Abstract

The invention relates to the technical field of self-closing water-saving valves, and discloses a high-pressure self-closing water-saving valve which comprises a valve unit and a control unit. The valve unit comprises a valve body, a guide cylinder is fixedly installed on the outer wall of the valve body, a valve rod is slidably installed on the inner wall of the guide cylinder, a valve plate is fixedly installed at the bottom end of the valve rod, a spring is fixedly installed between the top face of the valve rod and the inner top face of the guide cylinder, and an electromagnet is arranged on the top face of the guide cylinder. When the pressure of liquid in a pipeline is reduced and the flow speed is weakened, the valve can automatically recognize and react through an internal mechanism, the shaft rod drives the transmission disc to move under the action of gravity along with the reduction of the rotating speed of the rotating disc and the axial flow blade, and then a series of chain reactions are triggered; and finally, the valve plate automatically moves downwards to the position of the valve port under the action of the spring, automatic closing of the valve is achieved, the automation degree of the system is greatly improved through the characteristic, and the requirement for manual intervention is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of self-closing water-saving valves, and particularly to a high-pressure self-closing water-saving valve. Background Art

[0002] A high-pressure self-closing water-saving valve is a water-saving control device that combines high-pressure tolerance and automatic closing function. It is mainly used in high-pressure fluid systems (such as petroleum, chemical industry, and municipal water supply). It realizes automatic closing through pressure induction or mechanical linkage to prevent overpressure, underpressure, or medium backflow, and has the dual functions of water saving and safety.

[0003] After retrieval, a Chinese patent with the publication number CN119641933A discloses a high-pressure large-diameter self-closing valve, which relates to the technical field of wedge gate valves. It includes a valve body, the top middle position of which is hermetically connected with an end cover. The center position of the top surface of the end cover is rotatably connected with a control wheel. The two ends of the valve body are fixedly connected with valve ports. A wedge-shaped self-closing valve core is arranged inside the valve body. The control wheel is used to control the position of the wedge-shaped self-closing valve core. A slant seat that fits with the wedge-shaped self-closing valve core is fixedly connected inside the valve body near the wedge-shaped self-closing valve core. A control mechanism is arranged on one side of the valve body to control the high-pressure fluid inside the valve body and apply the pressure of the high-pressure fluid to the top surface of the wedge-shaped self-closing valve core; by controlling the high-pressure fluid inside the valve body and isolating the high-pressure fluid acting on the top surface of the wedge-shaped self-closing valve core, the pressure of the high-pressure fluid inside the valve body directly acts on the inner side of the wedge-shaped self-closing valve core, so that the position of the wedge-shaped self-closing valve core inside the valve body is easy to control. However, when this solution is actually used, there are still the following deficiencies:

[0004] High-pressure self-closing water-saving valves usually rely on pressure sensors to achieve precise control of valve opening and closing. Although this method can achieve relatively precise operation in theory, in the actual application process, first of all, due to the often harsh working environment, such as high humidity, corrosive gases or substances, etc., these may lead to a decrease in the sensitivity of the sensor or directly cause damage, thus affecting the normal operation of the valve. In addition, the method of using sensor control also requires professional technicians to regularly check and maintain it in order to timely discover and solve possible problems, which undoubtedly increases the maintenance cost and usage difficulty of the equipment.

[0005] Therefore, it is necessary to design a high-pressure self-closing water-saving valve to solve the above problems. Summary of the Invention

[0006] The purpose of the present invention is to solve the deficiencies existing in the prior art and propose a high-pressure self-closing water-saving valve.

[0007] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0008] A high-pressure self-closing water-saving valve, comprising a valve unit and a control unit;

[0009] Wherein, the valve unit includes a valve body, an outer wall of the valve body is fixedly installed with a guide cylinder, an inner wall of the guide cylinder is slidably installed with a valve rod, a bottom end of the valve rod is fixedly installed with a valve plate, a spring is fixedly installed between a top surface of the valve rod and an inner top surface of the guide cylinder, an electromagnet is arranged on a top surface of the guide cylinder, and a metal sheet is fixedly installed at a top end of the valve rod;

[0010] Wherein, the control unit includes a sleeve penetrating through an outer wall of a liquid inlet end of the valve body, and the sleeve is rotatably connected to the penetrating part, an inner wall of the sleeve is provided with a shaft rod, one end of the shaft rod located inside the valve body is fixedly installed with a turntable, and a plurality of axial flow blades distributed in an annular array are fixedly installed on an outer wall of the turntable;

[0011] Wherein, a sealing box is fixedly installed on a top surface of the valve body, and a top end of the shaft rod passes through a bottom surface of the sealing box and is provided with a triggering assembly;

[0012] Wherein, a buffer assembly is arranged on a bottom surface of the valve plate, and a display assembly is arranged on a top surface of the sealing box.

[0013] As a preferred technical solution of the present invention, a limiting block is fixedly installed on an inner wall of the sleeve, a limiting groove is formed on an outer wall of the shaft rod, and the limiting block is slidably connected to the limiting groove.

[0014] As a preferred technical solution of the present invention, the triggering assembly includes a transmission disc fixedly installed at a top end of the shaft rod, a plurality of magnetic pieces I distributed in an annular array are fixedly installed on an outer wall of the transmission disc, two transmission plates are symmetrically rotatably installed on an inner bottom surface of the sealing box through a rotating shaft I and a torsion spring, magnetic pieces II are fixedly installed at ends of the two transmission plates, a push plate is slidably installed on the inner bottom surface of the sealing box, and one end of the transmission plate far from the magnetic piece II is slidably connected to a side surface of the push plate through a chute and a slider.

[0015] As a preferred technical solution of the present invention, opposite magnetic poles of the magnetic piece I and the magnetic piece II are the same, and a limiting structure is arranged between the push plate and the valve rod.

[0016] As a preferred technical solution of the present invention, the limiting structure includes a driving rack fixedly installed on a side surface of the push plate, a transmission gear is rotatably installed on an inner bottom surface of the sealing box through a bracket, a positioning rod penetrates through an outer wall of the guide cylinder, a transmission rack is fixedly installed at an end of the positioning rod located outside the guide cylinder, and the transmission rack is slidably connected to a top end of the bracket, the transmission gear is meshed with the transmission rack and the driving rack, and a positioning groove adapted to the positioning rod is formed on an outer wall of the valve rod.

[0017] As a preferred technical solution of the present invention, the end of the positioning rod fits against the inner wall of the positioning groove.

[0018] As a preferred technical solution of the present invention, the buffer assembly includes two guide rods fixedly installed on the inner bottom surface of the sealed box, and the two guide rods are located outside the end of the transmission plate. Guide blocks are slidably sleeved at both ends of the two guide rods. Pressing plates are fixedly installed on the bottom surfaces of two guide blocks on the same side among the four guide blocks. An elastic airbag is fixedly installed between the opposite side surfaces of the two pressing plates. A buffer airbag ring is arranged at the position of the bottom side of the valve plate. The elastic airbag and the buffer airbag ring are communicated through a conduit.

[0019] As a preferred technical solution of the present invention, the guide rod is set to be U-shaped, and the pressing plate and the push plate are perpendicularly arranged.

[0020] As a preferred technical solution of the present invention, the display assembly includes a fixed box fixedly installed on the top surface of the sealed box. The inner wall of the top opening of the fixed box is symmetrically rotatably installed with two cover plates through a second rotating shaft and a second torsion spring. Buckles are fixedly installed at the bottom ends of the two cover plates. A through port adapted to the buckle is opened on the top surface of the sealed box. Two fixing frames are symmetrically and fixedly installed on the inner wall of the sealed box. A clamping plate adapted to the buckle is rotatably installed on the inner wall of the fixing frame.

[0021] As a preferred technical solution of the present invention, a reflective sheet is arranged on the bottom surface of the cover plate and the inner bottom surface of the fixed box.

[0022] The present invention has the following beneficial effects:

[0023] 1. By providing the axial flow blades and the transmission plate, when the liquid pressure in the pipeline decreases and the flow rate weakens, the valve can automatically identify and react through the internal mechanism. As the rotation speed of the turntable and the axial flow blades decreases, under the action of gravity, the shaft rod drives the transmission disc to move, thereby triggering a series of chain reactions, and finally causing the valve plate to automatically move downward to the valve port position under the action of the spring, realizing the automatic closing of the valve. This characteristic greatly improves the automation degree of the system and reduces the need for manual intervention;

[0024] 2. By providing the elastic airbag and the buffer airbag ring, during the closing process of the valve, the elastic airbag is squeezed by the pressing plate, so that the gas enters the buffer airbag ring, thereby causing the buffer airbag ring to expand and play a buffering role in the contact between the valve plate and the valve port, effectively slowing down the water hammer effect that may be caused by quickly closing the valve. This not only protects the pipeline system from potential damage, but also extends the service life of the equipment;

[0025] 3. By setting the cover plate and the reflector, when the valve is closed, the cover plate will be released from the limit due to the extrusion of the outer wall of the transmission plate on the buckle plate, and will automatically open under the action of the torsion spring, exposing the reflector on the bottom surface of the fixed box. For valves installed in a dim environment, this greatly increases the probability of their being discovered, which is beneficial for the staff to carry out regular inspections and maintenance work, and improves work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 FIG.

[0027] Figure 2 is a three-dimensional structural schematic diagram of a high-pressure self-closing water-saving valve proposed by the present invention;

[0028] Figure 3 FIG.

[0029] Figure 4 is a partial cross-sectional structural schematic diagram of a high-pressure self-closing water-saving valve proposed by the present invention;

[0030] Figure 5 is Figure 4 an enlarged structural schematic diagram at position A in

[0031] Figure 6 is Figure 2 an enlarged structural schematic diagram at position B in

[0032] Figure 7 FIG.

[0033] Figure 8 is a disassembled structural schematic diagram of the fixed box and the cover plate of a high-pressure self-closing water-saving valve proposed by the present invention;

[0034] Figure 9 is Figure 8 an enlarged structural schematic diagram at position C in

[0035] Figure 10 FIG.

[0036] Figure 11 is a structural schematic diagram of the cover plate of a high-pressure self-closing water-saving valve proposed by the present invention.

[0037] In the figure: 11, valve body; 12, guide cylinder; 13, valve stem; 14, valve plate; 15, spring; 21, shaft sleeve; 22, shaft rod; 23, limit block; 24, limit groove; 25, turntable; 26, axial flow blade; 31, sealing box; 32, drive disc; 33, magnetic sheet 1; 34, drive plate; 35, magnetic sheet 2; 36, push plate; 41, drive rack; 42, drive gear; 43, positioning rod; 44, drive rack; 45, positioning groove; 51, guide rod; 52, guide block; 53, pressing plate; 54, elastic airbag; 55, buffer airbag ring; 56, conduit; 61, fixing box; 62, cover plate; 63, buckle; 64, through port; 65, fixing frame; 66, buckle plate; 67, reflective sheet; 71, electromagnet; 72, metal sheet. Detailed implementation manner

[0038] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments.

[0039] Refer to Figures 1 - 11 , a high-pressure self-closing water-saving valve, including a valve unit and a control unit;

[0040] Among them, the valve unit includes a valve body 11, a guide cylinder 12 is fixedly installed on the outer wall of the valve body 11, a valve stem 13 is slidably installed on the inner wall of the guide cylinder 12, a valve plate 14 is fixedly installed at the bottom end of the valve stem 13, a spring 15 is fixedly installed between the top surface of the valve stem 13 and the inner top surface of the guide cylinder 12, an electromagnet 71 is arranged on the top surface of the guide cylinder 12, and a metal sheet 72 is fixedly installed at the top end of the valve stem 13;

[0041] Among them, the control unit includes a shaft sleeve 21 penetrating through the outer wall of the liquid inlet end of the valve body 11, and the shaft sleeve 21 is rotationally connected to the penetration position. A shaft rod 22 is arranged on the inner wall of the shaft sleeve 21. A limit block 23 is fixedly installed on the inner wall of the shaft sleeve 21. A limit groove 24 is opened on the outer wall of the shaft rod 22, and the limit block 23 is slidably connected to the limit groove 24. One end of the shaft rod 22 located inside the valve body 11 is fixedly installed with a turntable 25, and a plurality of axially distributed axial flow blades 26 are fixedly installed on the outer wall of the turntable 25;

[0042] Among them, a sealing box 31 is fixedly installed on the top surface of the valve body 11;

[0043] Connect both ends of the valve body 11 to the high-pressure pipelines respectively. In the working state, the valve plate 14 is separated from the valve port in the valve body 11, and the valve body 11 is in an open state. Liquid can flow normally in the valve body 11. Under the action of the flow velocity of the liquid flow, the turntable 25 and the axial flow blades 26 on its outer wall can be impacted. Under the action of the axial flow blades 26, when the turntable 25 rotates, it can drive the shaft rod 22 to rotate. And under the action of the limiting groove 24 and the limiting block 23, the shaft sleeve 21 on the outer side of the shaft rod 22 can also rotate. At the same time, when the axial flow blades 26 rotate, they can drive the turntable 25 and the shaft rod 22 to move upward. The limiting groove 24 can limit the movement of the shaft rod 22 to prevent its movement stroke from being too long.

[0044] The top end of the shaft rod 22 passes through the bottom surface of the sealing box 31 and is provided with a triggering assembly. The triggering assembly includes a driving disk 32 fixedly installed at the top end of the shaft rod 22. A plurality of magnetic pieces 33 distributed in an annular array are fixedly installed on the outer wall of the driving disk 32. The inner bottom surface of the sealing box 31 is symmetrically rotatably installed with two driving plates 34 through a first rotating shaft and a first torsion spring. As shown in Figure 10 the figure, wherein, the first rotating shaft is fixedly connected to the inner bottom surface of the sealing box 31. The driving plate 34 is rotatably sleeved on the first rotating shaft, and both ends of the first torsion spring are fixedly connected to the first rotating shaft and the driving plate 34 respectively. Magnetic pieces 35 are fixedly installed at the ends of both driving plates 34. The magnetic poles of the magnetic pieces 33 and the magnetic pieces 35 facing each other are the same. A push plate 36 is slidably installed on the inner bottom surface of the sealing box 31. And the end of the driving plate 34 away from the magnetic piece 35 is slidably connected to the side surface of the push plate 36 through a chute and a slider. A limiting structure is arranged between the push plate 36 and the valve rod 13;

[0045] The limiting structure includes a driving rack 41 fixedly installed on the side surface of the push plate 36. A transmission gear 42 is rotatably installed on the inner bottom surface of the sealing box 31 through a bracket. A positioning rod 43 penetrates through the outer wall of the guiding cylinder 12. A transmission rack 44 is fixedly installed at the end of the positioning rod 43 located outside the guiding cylinder 12. And the transmission rack 44 is slidably connected to the top end of the bracket. The transmission gear 42 meshes with the transmission rack 44 and the driving rack 41. A positioning groove 45 adapted to the positioning rod 43 is formed on the outer wall of the valve rod 13. The end of the positioning rod 43 is in contact with the inner wall of the positioning groove 45;

[0046] Under normal use conditions, the transmission disc 32 at the top of the shaft rod 22 can be located above the transmission plate 34, and the first magnetic piece 33 and the second magnetic piece 35 can be misaligned; when the liquid pressure in the pipeline decreases and the flow rate weakens, at this time, the rotational speeds of the turntable 25 and the axial flow blades 26 decrease. Under the action of its own weight, the shaft rod 22 can move downward and drive the transmission disc 32 to move. When the transmission disc 32 moves downward, it can move to the inner bottom surface of the sealing box 31. At this time, the first magnetic piece 33 and the second magnetic piece 35 on the side of the transmission plate 34 are in opposite positions. Since the opposite magnetic poles of the first magnetic piece 33 and the second magnetic piece 35 are the same, under the action of the repulsive magnetic force, the transmission plate 34 can rotate through the rotating shaft. When its end rotates, it can push the push plate 36 and drive the driving rack 41 to slide in the direction close to the guide cylinder 12. Since the transmission gear 42 meshes with the driving rack 41 and the transmission rack 44 respectively, when the driving rack 41 slides, it can drive the transmission rack 44 and the positioning rod 43 to slide in the opposite direction through the transmission gear 42, thereby driving the positioning rod 43 to move out of the positioning groove 45 on the outer wall of the valve rod 13, releasing the limit on the valve rod 13. After the valve rod 13 is released from the limit, it can move downward under the support of the spring 15 and drive the valve plate 14 to move into the valve port to close the valve body 11.

[0047] A buffer assembly is provided on the bottom surface of the valve plate 14. The buffer assembly includes two guide rods 51 fixedly installed on the inner bottom surface of the sealing box 31. The guide rods 51 are U-shaped, and the two guide rods 51 are located outside the end of the transmission plate 34. Guide blocks 52 are slidably sleeved at both ends of the two guide rods 51. Pressure plates 53 are fixedly installed on the bottom surfaces of the two guide blocks 52 on the same side among the four guide blocks 52. The pressure plates 53 are perpendicular to the push plate 36. An elastic airbag 54 is fixedly installed between the opposite side surfaces of the two pressure plates 53. A buffer airbag ring 55 is provided at the side position of the bottom surface of the valve plate 14. The elastic airbag 54 and the buffer airbag ring 55 are communicated through a conduit 56;

[0048] During the rotation of the transmission plate 34 along the rotating shaft, its end can squeeze the two pressure plates 53, so that the two pressure plates 53 slide along the guide rods 51 in the direction close to each other through the guide blocks 52, realizing the extrusion of the elastic airbag 54 between the pressure plates 53. After the elastic airbag 54 is squeezed, the gas inside it can enter the buffer airbag ring 55 through the conduit 56, causing the buffer airbag ring 55 to expand. When the valve plate 14 enters the valve port, the buffer airbag ring 55 can buffer the contact between the two, reducing the water hammer effect.

[0049] A display assembly is provided on the top surface of the sealing box 31. The display assembly includes a fixed box 61 fixedly installed on the top surface of the sealing box 31. Two cover plates 62 are symmetrically rotatably installed on the inner wall of the top opening of the fixed box 61 through a second rotating shaft and a second torsion spring. The second rotating shaft and the second torsion spring are as Figure 11As shown in the figure, the second rotating shaft is rotatably installed on the inner wall of the fixed box 61, the cover plate 62 is fixedly sleeved on the second rotating shaft, and the two ends of the second torsion spring are respectively fixedly connected to the second rotating shaft and the fixed box 61. The bottom ends of the two cover plates 62 are fixedly installed with buckles 63. A through port 64 adapted to the buckle 63 is opened on the top surface of the sealed box 31. Two fixing frames 65 are symmetrically and fixedly installed on the inner wall of the sealed box 31. A clamping plate 66 adapted to the buckle 63 is rotatably installed on the inner wall of the fixing frame 65. Reflective sheets 67 are arranged on the bottom surface of the cover plate 62 and the inner bottom surface of the fixed box 61.

[0050] When the driving disc 32 falls and drives the driving plate 34 to rotate, the outer wall of the driving plate 34 can squeeze the clamping plate 66, so that the clamping plate 66 rotates through the fixing frame 65. During the rotation of the clamping plate 66, its end can be separated from the buckle 63 on the bottom surface of the cover plate 62, releasing the limit on the buckle 63. After the buckle 63 is released from the limit, since the cover plate 62 is rotatably connected to the fixed box 61 through the second rotating shaft and the second torsion spring, under the action of the second torsion spring, the two cover plates 62 can rotate and open, and finally be in a vertical state, exposing the reflective sheet 67 on the bottom surface of the fixed box 61. Since the entire valve may be installed in a pipe well where the light is weak, the erected cover plate 62 and the reflective sheet 67 on the inner bottom surface of the fixed box 61 enable the flashlight irradiation during the inspection by the staff to be directly reflected, so that the staff can find it in time and it is more convenient to use. When liquid is passed again, the electromagnet 71 can be turned on to adsorb the metal sheet 72, and the valve stem 13 and the valve plate 14 can be reset. At the same time, after the liquid flows normally, the shaft rod 22 can also be reset for normal use.

[0051] The specific working principle of the present invention is as follows:

[0052] During use, the two ends of the valve body 11 can be respectively connected to the high-pressure pipelines. In the use state, the valve plate 14 is separated from the valve port in the valve body 11, and the valve body 11 is in an open state. The liquid can flow normally in the valve body 11, and under the action of the liquid flow velocity, the rotating disc 25 and the axial flow blades 26 on its outer wall can be impacted. Under the action of the axial flow blades 26, when the rotating disc 25 rotates, it can drive the shaft rod 22 to rotate, and under the action of the limiting groove 24 and the limiting block 23, the shaft sleeve 21 outside the shaft rod 22 can also rotate. At the same time, when the axial flow blades 26 rotate, they can drive the rotating disc 25 and the shaft rod 22 to move upward. The limiting groove 24 can limit the movement of the shaft rod 22 to prevent its movement stroke from being too long. The driving disc 32 at the top end of the shaft rod 22 can be located above the driving plate 34, and the first magnetic sheet 33 and the second magnetic sheet 35 can be misaligned.

[0053] When the liquid pressure in the pipeline decreases and the flow velocity weakens, the rotational speeds of the turntable 25 and the axial flow blades 26 decrease at this time. Under the action of its own weight, the shaft rod 22 can move downward and drive the transmission disk 32 to move. When the transmission disk 32 moves downward, it can move to the inner bottom surface of the sealing box 31. At this time, the first magnetic piece 33 can be in a relative position with the second magnetic piece 35 on the side of the transmission plate 34. Since the opposite magnetic poles of the first magnetic piece 33 and the second magnetic piece 35 are the same, under the action of the repulsive magnetic force, the transmission plate 34 can rotate through the rotating shaft. When the end part rotates, it can push the push plate 36 and drive the driving rack 41 to slide in the direction close to the guide cylinder 12. Since the transmission gear 42 is engaged with the driving rack 41 and the transmission rack 44 respectively, when the driving rack 41 slides, it can drive the transmission rack 44 and the positioning rod 43 to slide in the opposite direction through the transmission gear 42, so as to drive the positioning rod 43 to move out of the positioning groove 45 on the outer wall of the valve rod 13, release the limit on the valve rod 13, and after the valve rod 13 is released from the limit, it can move downward under the supporting action of the spring 15 and drive the valve plate 14 to move into the valve port to close the valve body 11;

[0054] During the rotation of the transmission plate 34 along the rotating shaft, its end part can squeeze the two pressing plates 53, so that the two pressing plates 53 slide in the direction close to each other along the guide rod 51 through the guide blocks 52, realizing the extrusion of the elastic airbag 54 between the pressing plates 53. After the elastic airbag 54 is extruded, the gas inside it can enter the buffer airbag ring 55 through the conduit 56, making the buffer airbag ring 55 expand. When the valve plate 14 enters the valve port, the buffer airbag ring 55 can buffer the contact between the two, slowing down the water hammer effect; at the same time, when the transmission disk 32 falls and drives the transmission plate 34 to rotate, the outer wall of the transmission plate 34 can squeeze the buckle plate 66, so that the buckle plate 66 rotates through the fixed frame 65. During the rotation of the buckle plate 66, its end part can be separated from the buckle 63 on the bottom surface of the cover plate 62, releasing the limit on the buckle 63. After the buckle 63 is released from the limit, since the cover plate 62 is rotationally connected to the fixed box 61 through the second rotating shaft and the second torsion spring, under the action of the second torsion spring, the two cover plates 62 can rotate and open, and finally be in a vertical state, exposing the reflective sheet 67 on the bottom surface of the fixed box 61. Since the entire valve may be installed in a pipe well where the light is weak, the erected cover plates 62 and the reflective sheet 67 on the inner bottom surface of the fixed box 61 enable the flashlight to be directly reflected when the staff conducts inspections, so that the staff can discover in time and it is more convenient to use. When the liquid is passed again, the electromagnet 71 can be turned on and adsorb the metal sheet 72, and the valve rod 13 and the valve plate 14 can be reset. At the same time, after the liquid flows normally, the shaft rod 22 can also be reset for normal use.

[0055] The above are only the preferred specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution of the present invention and its inventive concept, making equivalent substitutions or changes should be covered within the protection scope of the present invention.

Claims

1. A high-pressure self-closing water-saving valve, characterized in that: It includes a valve unit and a control unit; The valve unit comprises a valve body (11), a guide cylinder (12) is fixedly mounted on the outer wall of the valve body (11), a valve stem (13) is slidably mounted on the inner wall of the guide cylinder (12), a valve plate (14) is fixedly mounted on the bottom end of the valve stem (13), a spring (15) is fixedly mounted between the top surface of the valve stem (13) and the inner top surface of the guide cylinder (12), an electromagnet (71) is arranged on the top surface of the guide cylinder (12), and a metal sheet (72) is fixedly mounted on the top end of the valve stem (13); The control unit comprises a shaft sleeve (21) which is arranged through the outer wall of the liquid inlet end of the valve body (11), and the shaft sleeve (21) is rotatably connected to the penetration point, the inner wall of the shaft sleeve (21) is provided with a shaft rod (22), a rotating disk (25) is fixedly installed at one end of the shaft rod (22) located on the inner side of the valve body (11), and a plurality of axial flow blades (26) distributed in a ring array are fixedly installed on the outer wall of the rotating disk (25); Wherein, a sealing box (31) is fixedly mounted on the top surface of the valve body (11), and the top end of the shaft rod (22) passes through the bottom surface of the sealing box (31) and is provided with a trigger assembly; Wherein, a buffer component is arranged on the bottom surface of the valve plate (14), and a display component is arranged on the top surface of the sealing box (31).

2. The high-pressure self-closing water-saving valve according to claim 1, characterized in that: A limiting block (23) is fixedly mounted on the inner wall of the shaft sleeve (21), a limiting groove (24) is provided on the outer wall of the shaft rod (22), and the limiting block (23) is slidably connected to the limiting groove (24).

3. The high-pressure self-closing water-saving valve according to claim 1 is characterized in that: The trigger assembly comprises a transmission disk (32) fixedly mounted on the top of the shaft (22), the outer wall of the transmission disk (32) being fixedly mounted with a plurality of magnetic sheets (33) distributed in a ring array, the inner bottom surface of the sealing box (31) being symmetrically mounted with two transmission plates (34) through a rotating shaft (1) and a torsion spring (1), the ends of the two transmission plates (34) being fixedly mounted with magnetic sheets (35), the inner bottom surface of the sealing box (31) being slidably mounted with a push plate (36), and the end of the transmission plate (34) away from the magnetic sheet (35) being slidably connected to the side of the push plate (36) through a slide groove and a slider.

4. The high-pressure self-closing water-saving valve according to claim 3 is characterized in that: The magnetic poles of the first magnetic piece (33) and the second magnetic piece (35) are the same, and a limiting structure is provided between the push plate (36) and the valve stem (13).

5. The high-pressure self-closing water-saving valve according to claim 4 is characterized in that: The limiting structure comprises a driving rack (41) fixedly mounted on the side of the push plate (36); a transmission gear (42) is rotatably mounted on the inner bottom surface of the sealing box (31) through a bracket; a positioning rod (43) is penetrated through the outer wall of the guide cylinder (12); a transmission rack (44) is fixedly mounted on one end of the positioning rod (43) located on the outer side of the guide cylinder (12); and the transmission rack (44) is slidably connected to the top end of the bracket; the transmission gear (42) is meshed with the transmission rack (44) and the driving rack (41); and a positioning groove (45) adapted to the positioning rod (43) is provided on the outer wall of the valve stem (13).

6. The high-pressure self-closing water-saving valve according to claim 5, characterized in that: The end of the positioning rod (43) is in contact with the inner wall of the positioning groove (45).

7. The high-pressure self-closing water-saving valve according to claim 3, characterized in that: The buffer assembly comprises two guide rods (51) fixedly mounted on the inner bottom surface of the sealing box (31), and the two guide rods (51) are located outside the end of the transmission plate (34), and both ends of the two guide rods (51) are slidably mounted with guide blocks (52), and the bottom surfaces of two guide blocks (52) located on the same side of the four guide blocks (52) are fixedly mounted with pressure plates (53), and an elastic air bag (54) is fixedly mounted between the opposite sides of the two pressure plates (53), and a buffer air bag ring (55) is arranged at the side edge of the bottom surface of the valve plate (14), and the elastic air bag (54) and the buffer air bag ring (55) are connected through a conduit (56).

8. The high-pressure self-closing water-saving valve according to claim 7, characterized in that: The guide rod (51) is arranged in a U shape, and the pressing plate (53) and the pushing plate (36) are arranged vertically.

9. The high-pressure self-closing water-saving valve according to claim 1, characterized in that: The display assembly comprises a fixing box (61) fixedly mounted on the top surface of a sealed box (31); two cover plates (62) are symmetrically rotatably mounted on the inner wall of the top opening of the fixing box (61) via a second rotating shaft and a second torsion spring; buckles (63) are fixedly mounted on the bottom ends of the two cover plates (62); a through opening (64) adapted to the buckle (63) is opened on the top surface of the sealed box (31); two fixing frames (65) are symmetrically fixedly mounted on the inner wall of the sealed box (31); buckle plates (66) adapted to the buckle (63) are rotatably mounted on the inner wall of the fixing frame (65).

10. The high-pressure self-closing water-saving valve according to claim 9, characterized in that: The bottom surface of the cover plate (62) and the inner bottom surface of the fixing box (61) are both provided with a reflective sheet (67).

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