阅读说明：本技术 一种具有自我调节工能的节水阀门 (Water-saving valve with self-adjusting function ) 是由 孙春霞 于 2021-07-23 设计创作，主要内容包括：本发明涉及节水阀门技术领域,且公开了一种具有自我调节工能的节水阀门,包括节水阀、通孔、出水管、冲压机构、截流机构、触发机构,所述节水阀中部内壁固定连接有出水管,节水阀中部内壁开设有通孔,节水阀中部内壁活动连接有冲压机构,冲压机构主要起到传递水压压力的作用,节水阀中部内壁活动连接有截流机构,截流机构主要起到截流作用,节水阀中部内壁活动连接有触发机构。该具有自我调节工能的节水阀门,通过冲压机构带动触发机构运行,触发机构带动截流机构运行,再通过调节机构与通孔的配合使用,从而达到自动检测水压大小以及自动限流的效果,与传统设备相比较,该装置具备节约水量的好处,并对过放水流造成的浪费得到了较好的节约。(The invention relates to the technical field of water-saving valves, and discloses a water-saving valve with self-adjusting function, which comprises a water-saving valve, a through hole, a water outlet pipe, a punching mechanism, a cut-off mechanism and a triggering mechanism, wherein the water outlet pipe is fixedly connected to the inner wall of the middle part of the water-saving valve, the through hole is formed in the inner wall of the middle part of the water-saving valve, the punching mechanism is movably connected to the inner wall of the middle part of the water-saving valve, the punching mechanism mainly plays a role in transmitting water pressure, the cut-off mechanism is movably connected to the inner wall of the middle part of the water-saving valve, the cut-off mechanism mainly plays a role in cutting off, and the triggering mechanism is movably connected to the inner wall of the middle part of the water-saving valve. This water saving valve with self-adjusting work ability drives trigger mechanism through punching press mechanism and moves, and trigger mechanism drives the mechanism operation that dams, and the cooperation of rethread adjustment mechanism and through-hole is used to reach the effect of automated inspection water pressure size and automatic current-limiting, compare with traditional equipment, the device possesses the benefit of the water economy volume, and obtained better saving to the waste that the discharge current caused.)

1. A water-saving valve with self-adjusting function is characterized in that: the water saving valve comprises a water saving valve (1), a through hole (2), a water outlet pipe (3), a punching mechanism (5), a cut-off mechanism (6) and a trigger mechanism (7), wherein the water outlet pipe (3) is fixedly connected to the inner wall of the middle part of the water saving valve (1), the through hole (2) is formed in the inner wall of the middle part of the water saving valve (1), the punching mechanism (5) is movably connected to the inner wall of the middle part of the water saving valve (1), the punching mechanism (5) mainly plays a role in transmitting water pressure, the cut-off mechanism (6) is movably connected to the inner wall of the middle part of the water saving valve (1), the cut-off mechanism (6) mainly plays a role in cut-off, the trigger mechanism (7) is movably connected to the inner wall of the middle part of the water saving valve (1), the trigger mechanism (7) mainly plays a role in detecting the size of the water pressure, and the trigger mechanism (7) is fixedly connected to the right side of the punching mechanism (5).

2. A water saving valve with self regulating function as claimed in claim 1 wherein: still include adjustment mechanism (4), through-hole (2) middle part inner wall swing joint has adjustment mechanism (4), and adjustment mechanism (4) mainly play the effect of control rivers size.

3. A water saving valve with self regulating function as claimed in claim 2 wherein: the adjusting mechanism (4) comprises a spiral groove (41), a spiral screw rod (42) and a sealing plug (43), the spiral groove (41) is formed in the inner top wall of the through hole (2), the spiral screw rod (42) is movably connected to the inner wall of the middle of the spiral groove (41), and the sealing plug (43) is fixedly connected to the bottom of the spiral screw rod (42).

4. A water saving valve with self regulating function as claimed in claim 1 wherein: the stamping mechanism (5) comprises a diversion cavity (51), a piston (52), a first compression spring (53) and a water-saving valve (1), wherein the diversion cavity (51) is formed in the inner wall of the middle of the diversion cavity (51), the piston (52) is movably connected to the inner wall of the middle of the diversion cavity (51), and the first compression spring (53) is fixedly connected to the right side of the piston (52).

5. A water saving valve with self regulating function as claimed in claim 1 wherein: the intercepting mechanism (6) comprises a ball (61), a return spring (62), an electromagnet (63), a telescopic groove (64), a flow limiting block (65) and a magnetic block (66), wherein the telescopic groove (64) is formed in the inner wall of the middle of the water saving valve (1), the flow limiting block (65) is formed in the inner wall of the middle of the telescopic groove (64), the magnetic block (66) is fixedly connected to the inner wall of the middle of the flow limiting block (65), the ball (61) is movably connected to the outer side of the flow limiting block (65), the return spring (62) is fixedly connected to the outer side of the flow limiting block (65), and the electromagnet (63) is fixedly connected to the inner wall of the middle of the water saving valve (1).

6. A water saving valve with self regulating function as claimed in claim 5 wherein: the size of the magnetic block (66) is smaller than that of the current limiting block (65), the magnetic pole on the outer side of the magnetic block (66) is the same as that on the inner side of the electromagnet (63), and the outer side of the return spring (62) is fixedly connected with the inner wall of the telescopic groove (64).

7. A water saving valve with self regulating function as claimed in claim 1 wherein: the trigger mechanism (7) comprises a pressing rod (71), a pressure sensitive resistor (72), a resistor disc (73), a sealing block (74) and working liquid (75), wherein the pressing rod (71) is movably connected to the inner wall of the middle of the water-saving valve (1), the pressure sensitive resistor (72) is fixedly connected to the inner wall of the middle of the water-saving valve (1), the resistor disc (73) is fixedly connected to the inner wall of the middle of the water-saving valve (1), the sealing block (74) is movably connected to the inner wall of the middle of the water-saving valve (1), and the working liquid (75) is movably connected to the inner wall of the middle of the water-saving valve (1).

8. A water saving valve with self regulating function as claimed in claim 7 wherein: the trigger mechanism (7) further comprises a power supply module (76), a sealing cavity (77), a conductive column (78), a movable block (79) and a second compression spring (710), the power supply module (76) is fixedly connected to the middle inner wall of the water-saving valve (1), the sealing cavity (77) is formed in the middle inner wall of the water-saving valve (1), the movable block (79) is movably connected to the middle inner wall of the sealing cavity (77), the conductive column (78) is fixedly connected to the middle inner wall of the movable block (79), and the second compression spring (710) is movably connected to the middle inner wall of the movable block (79).

Technical Field

The invention relates to the technical field of water-saving valves, in particular to a water-saving valve with self-adjusting function.

Background

The fresh water resource is gradually reduced in the use amount of people, and the valve is a control part in a fluid conveying system, has the functions of stopping, adjusting, guiding, preventing counter flow, stabilizing pressure, shunting or overflowing and relieving pressure and the like, is used for a valve of a fluid control system, is various valves used in an extremely complex automatic control system from the simplest stop valve, and is not beneficial to the reasonable use of users due to the fact that the flow is increased suddenly when the stop valve is opened.

In the use of valve for the water conservation, if when opening tap, because initial preparation is not enough, can lead to tap to open just to get into normal use state after a period usually, and the utilization ratio of the water that the initial stage flows is extremely low, has lead to the waste of resource, is unfavorable for the purpose of water conservation, if open the valve to the biggest in the short time, can lead to more serious water waste, has caused the loss for the user, is unfavorable for energy-concerving and environment-protective.

Therefore, we propose a water-saving valve with self-adjusting function to solve the above problems.

Disclosure of Invention

Technical problem to be solved

Aiming at the defects of the prior art, the invention provides the water-saving valve with the self-adjusting function, which has the advantages of simple operation, automatic detection of the water pressure and timely flow limitation to prevent overlarge water flow, and solves the problem of water resource waste caused by the fact that the traditional equipment does not have throttling.

(II) technical scheme

In order to realize the purposes of automatically detecting the water pressure and limiting the flow in time to prevent the overlarge water flow, which are simple in operation, the invention provides the following technical scheme: a water-saving valve with self-adjusting function comprises a water-saving valve, a through hole, a water outlet pipe, a stamping mechanism, a cut-off mechanism and a trigger mechanism, wherein the water outlet pipe is fixedly connected to the inner wall of the middle of the water-saving valve, the through hole is formed in the inner wall of the middle of the water-saving valve, the stamping mechanism is movably connected to the inner wall of the middle of the water-saving valve, the stamping mechanism mainly plays a role in transmitting water pressure, the cut-off mechanism is movably connected to the inner wall of the middle of the water-saving valve, the cut-off mechanism mainly plays a role in cut-off, the trigger mechanism is movably connected to the inner wall of the middle of the water-saving valve, the trigger mechanism mainly plays a role in detecting the size of water pressure, and the trigger mechanism is fixedly connected to the right side of the stamping mechanism.

Further, still include adjustment mechanism, through-hole middle part inner wall swing joint has adjustment mechanism, and adjustment mechanism mainly plays the effect of control rivers size, thereby people realize adjusting the size of required water yield through manual regulation adjustment mechanism to reach the demand of oneself.

Further, the adjusting mechanism comprises a spiral groove, a spiral screw rod and a sealing plug, the spiral groove is formed in the inner wall of the through hole, the inner wall of the middle of the spiral groove is movably connected with the spiral screw rod, the sealing plug is fixedly connected to the bottom of the spiral screw rod, teeth on the outer side of the spiral screw rod are meshed with tooth grooves on the inner side of the spiral groove, the rising or falling of the adjusting sealing plug is achieved by rotating the spiral groove, therefore, the size of water flow is adjusted, the length of the sealing plug is larger than the water outlet of the water outlet pipe, and the outer side of the sealing plug is tightly attached to the inner wall of the through hole.

Furthermore, the stamping mechanism comprises a flow guide cavity, a piston, a first compression spring and a water-saving valve, wherein the flow guide cavity is formed in the inner wall of the middle of the water-saving valve, the piston is movably connected to the inner wall of the middle of the flow guide cavity, the first compression spring is fixedly connected to the right side of the piston, the flow guide cavity is communicated with the through hole, the size of the piston is matched with that of the flow guide cavity, the length of the first compression spring is smaller than that of the piston, the right side of the first compression spring is fixedly connected with the inner wall of the water-saving valve, and the right side of the flow guide cavity is fixedly connected with the left side of the compression rod.

Further, the intercepting mechanism comprises balls, reset springs, electromagnets, telescopic grooves, flow limiting blocks and magnetic blocks, the telescopic grooves are formed in the inner wall of the middle of the water-saving valve, the flow limiting blocks are formed in the inner wall of the middle of the telescopic grooves, the magnetic blocks are fixedly connected to the inner wall of the middle of the flow limiting blocks, the balls are movably connected to the outer sides of the flow limiting blocks, the reset springs are fixedly connected to the outer sides of the flow limiting blocks, the electromagnets are fixedly connected to the inner wall of the middle of the water-saving valve, clamping grooves matched with the balls are formed in the outer sides of the flow limiting blocks, the balls mainly play a role in reducing friction between the flow limiting blocks and the inner wall of the telescopic grooves, through holes are formed in the inner wall of the middle of the flow limiting blocks, water flow is mainly reduced, the electromagnets are electrically connected with piezoresistors, and the intercepting mechanism is two groups and is symmetrically distributed.

Furthermore, the size of the magnetic block is smaller than that of the current limiting block, the magnetic pole outside the magnetic block is the same as the magnetic pole inside the electromagnet, the outer side of the return spring is fixedly connected with the inner wall of the telescopic groove, when the electromagnet is powered on, a magnetic field is generated to enable the magnetic block to be subjected to repulsive force, the current limiting block is driven to move inwards along the inner wall of the telescopic groove, and the initial state of the return spring is at the original length.

Further, the triggering mechanism comprises a pressure lever, a piezoresistor, a resistor disc, a sealing block and working liquid, the pressure lever is movably connected to the inner wall of the middle part of the water-saving valve, the piezoresistor is fixedly connected to the inner wall of the middle part of the water-saving valve, the resistor disc is fixedly connected to the inner wall of the middle part of the water-saving valve, the sealing block is movably connected to the inner wall of the middle part of the water-saving valve, the working liquid is movably connected to the inner wall of the middle part of the water-saving valve, the pressure lever and the sealing block are in a separation state in an initial state, the model of the piezoresistor is DL, when the circuit voltage is smaller than the working voltage of the piezoresistor, the piezoresistor is in an open circuit state, when the circuit voltage is larger than the working voltage of the piezoresistor, and the piezoresistor is electrically connected with the conductive column.

Further, the triggering mechanism further comprises a power supply module, a sealing cavity, a conductive column movable block and a compression spring II, the power supply module is fixedly connected with the inner wall of the middle part of the water-saving valve, the sealing cavity is formed in the inner wall of the middle part of the water-saving valve, the movable block is movably connected with the inner wall of the middle part of the sealing cavity, the conductive column is fixedly connected with the inner wall of the middle part of the movable block, the compression spring II is movably connected with the inner wall of the middle part of the movable block, the power supply module is electrically connected with the resistance sheet, the back of the conductive column is in front attachment with the resistance sheet, the initial effective contact length of the conductive column and the resistance sheet is the largest, the resistance value of the conductive column is the smallest through the maximum voltage of the conductive column, and the length of the compression spring II is smaller than that of the movable block.

(III) advantageous effects

Compared with the prior art, the invention provides a water-saving valve with self-adjusting function, which has the following beneficial effects:

1. this water saving valve with self-adjusting work ability drives trigger mechanism through punching press mechanism and moves, and trigger mechanism drives the mechanism operation that dams, and the cooperation of rethread adjustment mechanism and through-hole is used to reach the effect of automated inspection water pressure size and automatic current-limiting, compare with traditional equipment, the device possesses the benefit of the water economy volume, and obtained better saving to the waste that the discharge current caused.

2. This water saving valve with self-adjusting function drives the outlet pipe through adjustment mechanism and moves, and the outlet pipe drives the motion of punching press mechanism, thereby the cooperation of rethread water saving valve and through-hole is used and is reached the effect of adjusting the rivers size, compares the device with traditional water valve and realizes triggering the effect that the mechanism reaches the using water wisely that dams through the size of adjusting rivers.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a partially enlarged view of the portion A of FIG. 1 according to the present invention;

FIG. 3 is a partially enlarged view of the portion B shown in FIG. 1 according to the present invention;

fig. 4 is a partially enlarged structural view of fig. 1 according to the present invention.

In the figure: 1. a water saving valve; 2. a through hole; 3. a water outlet pipe; 4. an adjustment mechanism; 5. a stamping mechanism; 6. a shut-off mechanism; 7. a trigger mechanism; 41. a helical groove; 42. a screw rod; 43. a sealing plug; 51. a flow guide cavity; 52. a piston; 53. a first compression spring; 61. a ball bearing; 62. a return spring; 63. an electromagnet; 64. a telescopic groove; 65. a flow limiting block; 66. a magnetic block; 71. a pressure lever; 72. a voltage dependent resistor; 73. resistance cards; 74. a sealing block; 75. a working fluid; 76. a power supply module; 77. sealing the cavity; 78. a conductive post; 79. a movable block; 710. and a second compression spring.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The first embodiment is as follows:

referring to fig. 1-4, a water saving valve with self-adjusting function comprises a water saving valve 1, a through hole 2, a water outlet pipe 3, a punch 5, a stamping mechanism 5 including a diversion cavity 51, a piston 52, a first compression spring 53, a diversion cavity 51 formed on the inner wall of the middle part of the water saving valve 1, the piston 52 movably connected to the inner wall of the middle part of the diversion cavity 51, the first compression spring 53 fixedly connected to the right side of the piston 52, the diversion cavity 51 communicated with the through hole 2, the size of the piston 52 adapted to the size of the diversion cavity 51, the length of the first compression spring 53 less than the length of the piston 52, the right side of the first compression spring 53 fixedly connected to the inner wall of the water saving valve 1, the right side of the diversion cavity 51 fixedly connected to the left side of a pressure lever 71, a shut-off mechanism 6, the shut-off mechanism 6 including a ball 61, a return spring 62, an electromagnet 63, a telescopic slot 64, a flow limiting block 65, a magnetic block 66, the size of the magnetic block 66 less than the size of the flow limiting block 65, the magnetic pole outside the magnetic block 66 is the same as the magnetic pole inside the electromagnet 63, the outside of the return spring 62 is fixedly connected with the inner wall of the telescopic groove 64, when the electromagnet 63 is electrified, a magnetic field is generated to enable the magnetic block 66 to be subjected to repulsive force, the flow limiting block 65 is driven to move inwards along the inner wall of the telescopic groove 64, the initial state of the return spring 62 is in the original length, the telescopic groove 64 is formed in the inner wall of the middle of the water saving valve 1, the flow limiting block 65 is formed in the inner wall of the middle of the telescopic groove 64, the magnetic block 66 is fixedly connected to the inner wall of the middle of the flow limiting block 65, the ball 61 is movably connected to the outside of the flow limiting block 65, and the return spring 62 is fixedly connected to the outside of the flow limiting block 65;

the inner wall of the middle part of the water-saving valve 1 is fixedly connected with an electromagnet 63, the outer side of a current-limiting block 65 is provided with a clamping groove matched with the ball 61, the ball 61 mainly plays a role in reducing friction between the current-limiting block 65 and the inner wall of a telescopic groove 64, the inner wall of the middle part of the current-limiting block 65 is provided with a through hole 2 mainly playing a role in reducing water flow, the electromagnet 63 is electrically connected with a piezoresistor 72, the number of the interception mechanisms 6 is two and is symmetrically distributed, the triggering mechanisms 7, a water outlet pipe 3 is fixedly connected with the inner wall of the middle part of the water-saving valve 1, the through hole 2 is arranged on the inner wall of the middle part of the water-saving valve 1, the punching mechanism 5 is movably connected with the inner wall of the middle part of the water-saving valve 1, the punching mechanism 5 mainly plays a role in transmitting water pressure, the inner wall of the middle part of the water-saving valve 1 is movably connected with the interception mechanism 6, the interception mechanism 6 mainly plays a role in intercepting role, the triggering mechanism 7 is movably connected with the triggering mechanism 7 mainly playing a role in detecting water pressure, the right side of the stamping mechanism 5 is fixedly connected with a trigger mechanism 7.

Example two:

referring to fig. 1-4, a water saving valve with self-adjusting function comprises a water saving valve 1, a through hole 2, a water outlet pipe 3, a stamping mechanism 4, and an adjusting mechanism 4 including a spiral groove 41, a spiral screw rod 42, and a sealing plug 43, wherein the spiral groove 41 is formed on the top wall of the through hole 2, the spiral screw rod 42 is movably connected to the inner wall of the middle part of the spiral groove 41, the sealing plug 43 is fixedly connected to the bottom of the spiral screw rod 42, teeth on the outer side of the spiral screw rod 42 are engaged with tooth grooves on the inner side of the spiral groove 41, the sealing plug 43 is adjusted to ascend or descend by rotating the spiral groove 41, so as to adjust the water flow, the length of the sealing plug 43 is larger than the water outlet of the water outlet pipe 3, the outer side of the sealing plug 43 is tightly attached to the inner wall of the through hole 2, the adjusting mechanism 4 and the stamping mechanism 5 include a diversion cavity 51, a piston 52, a first compression spring 53, and a diversion cavity 51 is formed on the inner wall of the middle part of the water saving valve 1, the inner wall of the middle part of the diversion cavity 51 is movably connected with a piston 52, the right side of the piston 52 is fixedly connected with a first compression spring 53, the diversion cavity 51 is communicated with the through hole 2, the size of the piston 52 is matched with that of the diversion cavity 51, the length of the first compression spring 53 is smaller than that of the piston 52, the right side of the first compression spring 53 is fixedly connected with the inner wall of the water-saving valve 1, the right side of the diversion cavity 51 is fixedly connected with the left side of a compression bar 71, the intercepting mechanism 6 and the intercepting mechanism 6 comprise a ball 61, a return spring 62, an electromagnet 63, a telescopic groove 64, a flow limiting block 65 and a magnetic block 66, and the size of the magnetic block 66 is smaller than that of the flow limiting block 65;

the magnetic pole outside the magnet 66 is the same as the magnetic pole inside the electromagnet 63, the outside of the return spring 62 is fixedly connected with the inner wall of the telescopic groove 64, when the electromagnet 63 is electrified, a magnetic field is generated to enable the magnet 66 to be subjected to repulsive force, the current limiting block 65 is driven to move inwards along the inner wall of the telescopic groove 64, the initial state of the return spring 62 is in the original length, the inner wall of the middle part of the water saving valve 1 is provided with the telescopic groove 64, the inner wall of the middle part of the telescopic groove 64 is provided with the current limiting block 65, the inner wall of the middle part of the current limiting block 65 is fixedly connected with the magnet 66, the outside of the current limiting block 65 is movably connected with the ball 61, the outside of the current limiting block 65 is fixedly connected with the return spring 62, the inner wall of the middle part of the water saving valve 1 is fixedly connected with the electromagnet 63, the outside of the current limiting block 65 is provided with the clamping groove matched with the ball 61, the ball 61 mainly plays a role of reducing friction between the current limiting block 65 and the inner wall of the telescopic groove 64, the inner wall of the current limiting block 65 is provided with the through hole 2, the water flow is mainly reduced, the electromagnets 63 are electrically connected with the piezoresistors 72, the number of the intercepting mechanisms 6 is two, the intercepting mechanisms are symmetrically distributed, and the triggering mechanism 7 comprises a pressure lever 71, the piezoresistors 72, resistor discs 73, sealing blocks 74 and working liquid 75;

the inner wall of the middle part of the water-saving valve 1 is movably connected with a pressure lever 71, the inner wall of the middle part of the water-saving valve 1 is fixedly connected with a piezoresistor 72, the inner wall of the middle part of the water-saving valve 1 is fixedly connected with a resistor disc 73, the inner wall of the middle part of the water-saving valve 1 is movably connected with a sealing block 74, the inner wall of the middle part of the water-saving valve 1 is movably connected with working liquid 75, the pressure lever 71 and the sealing block 74 are in a separated state in an initial state, the model of the piezoresistor 72 is 05D180L, when the circuit voltage is smaller than the working voltage of the piezoresistor 72, the piezoresistor 72 is in an open circuit state, and when the circuit voltage is larger than the working voltage of the piezoresistor 72, the piezoresistor 72 is electrically connected with the conductive post 78;

the triggering mechanism 7 further comprises a power supply module 76, a sealing cavity 77, a conductive post 78 movable block 79 and a second compression spring 710, the power supply module 76 is fixedly connected to the inner wall of the middle part of the water saving valve 1, the sealing cavity 77 is formed in the inner wall of the middle part of the water saving valve 1, the movable block 79 is movably connected to the inner wall of the middle part of the sealing cavity 77, the conductive post 78 is fixedly connected to the inner wall of the middle part of the movable block 79, the second compression spring 710 is movably connected to the inner wall of the middle part of the movable block 79, the power supply module 76 is electrically connected with the electromagnet 63, the back surface of the conductive post 78 is attached to the front surface of the resistance sheet 73, the initial effective contact length of the conductive post 78 and the resistance sheet 73 is the largest, the resistance value of the initial effective contact length is the smallest voltage passing through the conductive post 78, the length of the second compression spring 710 is smaller than that of the movable block 79, the inner wall of the middle part of the water saving valve 1 is fixedly connected with a water outlet pipe 3, the inner wall of the middle part of the water saving valve 1 is provided with a through hole 2, the punching mechanism 5 is movably connected to the inner wall of the middle of the water-saving valve 1, the punching mechanism 5 mainly plays a role in transferring water pressure, the interception mechanism 6 is movably connected to the inner wall of the middle of the water-saving valve 1, the interception mechanism 6 mainly plays an interception role, the trigger mechanism 7 is movably connected to the inner wall of the middle of the water-saving valve 1, the trigger mechanism 7 mainly plays a role in detecting the size of the water pressure, and the trigger mechanism 7 is fixedly connected to the right side of the punching mechanism 5.

The working principle is as follows: when people take water, the adjusting mechanism 4 is adjusted and rotated manually, the screw rod 42 is rotated anticlockwise and drives the sealing plug 43 to move upwards, when the expansion amount of the sealing plug 43 changes less, the water flow in the water outlet pipe 3 enters the through hole 2 along the inner wall, because the water yield of the water outlet pipe 3 is small, the impact force on the piston 52 is small, so that the extrusion amount on the pressure lever 71 is small and the pressure lever does not contact with the sealing block 74, at this time, the working fluid 75 is not extruded, the movable block 79 is at the initial position, the conductive post 78 is in the static state, the effective contact length with the resistance sheet 73 is not changed, at this time, the voltage passing through the piezoresistor 72 is minimum, the maximum access voltage of the piezoresistor 72 is not reached, the circuit is in a broken state, the electromagnet 63 is in a broken state, the current limiting block 65 is in a static state, and the return spring 62 is not stretched to be in an original length state;

when the number of turns of the spiral screw rod 42 which is rapidly rotated anticlockwise reaches the maximum number of turns, the change of the expansion amount of the sealing plug 43 is maximum at the moment, water flow in the water outlet pipe 3 can rapidly enter the through hole 2 along the inner wall at the moment, because the water outlet amount of the water outlet pipe 3 is large, the impact force on the piston 52 is maximum at the moment, the extrusion amount of the pressure lever 71 is maximum and is contacted with the sealing block 74, the sealing block 74 is driven to move towards the right side, the working liquid 75 is rapidly extruded at the moment, because of the hydraulic action, the movable block 79 moves towards the left side along the inner wall of the sealing cavity 77 and compresses the second compression spring 710, the movable block 79 drives the conductive post 78 to move together at the moment, the effective contact length of the resistance plate 73 and the conductive post 78 is changed, the effective length of the resistance plate 73 reaches the minimum, the effective resistance value of the resistance plate 73 is the maximum at the moment, the voltage passing through the piezoresistor 72 is the maximum, and because the circuit voltage is greater than the working voltage of the piezoresistor 72, the piezoresistor 72 is in a closed state, the electromagnet 63 connected in series with the piezoresistor 72 is electrified to generate a magnetic field, the magnetic block 66 is subjected to repulsive force under the action of the magnetic field to drive the current limiting block 65 to move inwards along the inner wall of the telescopic groove 64, the return spring 62 is stretched at the moment, so that the amount of water flowing through the through hole 2 is reduced, and the throttling effect is achieved,

after the use is finished, the screw rod 42 is rotated clockwise to close the valve, so that the sealing plug 43 moves downwards to the maximum position, the water outlet of the water outlet pipe 3 is sealed, at the moment, the water flow in the water outlet pipe 3 stops rapidly, at the moment, the impact force on the piston 52 disappears, the pressure lever 71 retracts to the left side under the action of the compression spring I53, the working fluid 75 recovers to the initial position under the action of the movable block 79 and the compression spring II 710, the movable block 79 moves to the right side along the inner wall of the sealing cavity 77, at the moment, the movable block 79 drives the conductive post 78 to move together, the effective contact length of the resistance sheet 73 and the conductive post 78 is recovered to the initial position, at the moment, the effective resistance value of the resistance sheet 73 is minimum, at the moment, the voltage passing through the piezoresistor 72 is minimum, when the circuit voltage is smaller than the working voltage of the piezoresistor 72, the piezoresistor 72 is in an open circuit state, at the moment, the electromagnet 63 connected with the piezoresistor 72 in series is powered off, at this time, the return spring 62 returns to the initial state, and drives the flow restriction block 65 to contract outward, so that the flow restriction block 65 does not restrict the flow of the through hole 2 any more.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.