CN213393658U - Control valve for on-off of waterway system - Google Patents

Abstract

A control valve for on-off of a waterway system comprises a valve body, wherein the valve body comprises a first cavity, a second cavity, a third cavity and a valve core mounting cavity, the second cavity is protruded and buckled in the middle of the first cavity, so that the first cavity forms an annular water channel, the first cavity is communicated with the third cavity, the third cavity is communicated with the valve core mounting cavity, and the valve core mounting cavity is communicated with the second cavity; the valve core mounting cavity is provided with a valve core, and the valve core can be isolated from the valve core mounting cavity in a sliding manner; a sealing element is arranged between the second chamber and the third chamber, when the valve core is closed and the sealing element movably seals the second chamber, the second chamber is not communicated with the first chamber, and when the valve core is opened and the sealing element movably blocks the third chamber, the second chamber is communicated with the first chamber; the utility model discloses simple structure, the installation is dismantled conveniently, and is with low costs.

Description

Control valve for on-off of waterway system

Technical Field

The utility model relates to a control valve field, especially a control valve for waterway system break-make.

Background

In various control valves commonly used in daily life, a control switch called a ceramic valve body, a matched body, a water inlet and outlet channel component, an operation rotary handle and the like are arranged in the control valve. The ceramic valve body is provided with two ceramic pieces which are attached to each other, the two ceramic pieces are operated to rotate or slide mutually, and the ceramic pieces are provided with specially designed holes or gaps to form through or cover a water path so as to realize the opening and closing of the valve body. However, after the control valve is used for a long time, the two ceramic plates resist rotation due to friction, so that the opening or closing of the faucet cannot be controlled, and in addition, the requirement on the machining precision of the ceramic valve plates is particularly high, the valve body is complex in structure, and the use cost is high.

SUMMERY OF THE UTILITY MODEL

To the problem that the background art provided, the utility model aims to provide an on-off control valve for waterway system.

To achieve the purpose, the utility model adopts the following technical proposal:

a control valve for on-off of a waterway system comprises a valve body, wherein the valve body comprises a first cavity, a second cavity, a third cavity and a valve core mounting cavity, the second cavity is protruded and buckled in the middle of the first cavity, so that the first cavity forms an annular water channel, the top of the first cavity is provided with a first channel, the first channel is communicated with the first cavity and the third cavity, the third cavity is communicated with the valve core mounting cavity through a direct current channel, and the valve core mounting cavity is communicated with the second cavity through a direct current water channel;

the valve core mounting cavity is provided with a valve core, and the valve core can slidably isolate the communication between the valve core mounting cavity and the straight walking water channel;

and a sealing element is arranged between the second chamber and the third chamber, the sealing element is movably arranged between the second chamber and the third chamber, when the valve core is closed, the sealing element seals the second chamber, the second chamber is not communicated with the first chamber, when the valve core is opened, the sealing element movably seals and separates the third chamber, and the second chamber is communicated with the first chamber.

Preferably, the sealing element comprises a sealing diaphragm and a valve cover, the sealing diaphragm is provided with a groove, and the valve cover is installed in the groove;

the other side of the sealing diaphragm is provided with an annular mounting groove, the annular mounting groove is sleeved on the outer wall of the annular water channel, and the annular mounting groove seals the joint of the edges of the first chamber and the third chamber;

when the sealing diaphragm is abutted against the opening of the second chamber, the second chamber is not communicated with the first chamber, and when the sealing diaphragm is far away from the opening of the second chamber, the second chamber is communicated with the first chamber.

Preferably, a second channel is arranged at the top of the valve core mounting cavity, the straight walking water channel is arranged above the valve core mounting cavity, and the valve core mounting cavity is communicated with the straight walking water channel through the second channel;

and a third channel is formed in the second chamber and is communicated with the second chamber and the straight walking water channel.

Preferably, the valve body further comprises a water inlet and a water outlet, the water inlet is arranged at the bottom of the valve body, and the water inlet is communicated with the first chamber through a water inlet channel;

the water outlet is arranged at the top of the valve body and is communicated with the second cavity through the third channel.

Preferably, a spring is arranged in the valve core mounting cavity and connected with the bottom of the valve core;

the valve core mounting cavity is externally sleeved with an annular magnet and an external spring, the external spring is connected with the bottom of the annular magnet, the annular magnet corresponds to the valve core, and the annular magnet can drive the valve core to slide in the valve core mounting cavity.

Preferably, a positioning block is arranged at the top of the sealing diaphragm, an installation opening is formed in the top of the third chamber, and the positioning block is buckled with the installation opening, so that the sealing diaphragm is fixed with the third chamber;

the positioning block is provided with a connecting hole, the top of the first cavity is provided with an installation boss, and the installation boss is embedded into the connecting hole, so that the sealing diaphragm is fixed with the first cavity.

Preferably, the side surface of the third chamber further comprises an annular mounting hole, the side surface of the first chamber is provided with an annular mounting block, and the third chamber is connected with the first chamber so that the annular mounting hole is clamped on the mounting block.

Compared with the prior art, the utility model discloses following beneficial effect has:

the barrel structure of water purifier is simple, and the assembly degree of difficulty is low, and each filter core is rationally distributed also obviously, and it is simple to filter the water route, and the ability of every filter core independently filters, each other does not influence, and the control that the filtration process also can be orderly has reduced the condition of crossing water, has guaranteed the quality of the water after filtering.

The utility model discloses the hydrophone does not need fixed fittings down, lets the installation become simply with the dismantlement process, has improved efficiency, has also reduced processing technology's cost. In addition, the arc-shaped design of the mounting opening solves the problem of water accumulation, ensures the sanitation of the basin body, reduces the cleaning times, prolongs the service life and brings good use feeling to users.

Drawings

The accompanying drawings are provided to further illustrate the present invention, but the content in the accompanying drawings does not constitute any limitation to the present invention.

FIG. 1 is a cross-sectional view of the structure of the present invention;

FIG. 2 is a detail view of the interior of the valve body;

FIG. 3 is a schematic view of a side groove of a sealing diaphragm;

FIG. 4 is a schematic view of an annular mounting groove of the sealing diaphragm;

FIG. 5 is a schematic view of the first chamber;

FIG. 6 is a schematic view of a third chamber;

FIG. 7 is a schematic view of the direction of water flow through the valve body after the valve cartridge is closed;

FIG. 8 is a schematic view of the direction of water flow through the valve body when the valve core is just opened;

fig. 9 is a schematic view of the direction of water flow in the valve body after the valve spool is fully opened.

Wherein: the valve comprises a valve body A, a first cavity 1, a second cavity 2, a mounting boss 21, an annular mounting block 22, an annular water channel 23, a third cavity 3, a mounting port 31, an annular mounting hole 32, a valve core mounting cavity 4, a valve core 41, an annular magnet 42, a spring 43, an external spring 44, a water outlet 5, a water inlet 6, a sealing element 7, a sealing diaphragm 71, a valve cover 72, a groove 721, a connecting hole 722, a positioning block 723, an annular mounting groove 724, a second channel 12, a third channel 13, a direct current channel 14, a direct current channel 15 and a water inlet channel 16.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.

Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicit to a number of technical features being indicated. Thus, features defined as "first", "second" and "third" may explicitly or implicitly include one or more of the features.

As shown in fig. 1 to 9, a control valve for on/off of a waterway system includes a valve body a, the valve body a includes a first chamber 1, a second chamber 2, a third chamber 3 and a valve core installation chamber 4, the second chamber 2 protrudes and is buckled in the middle of the first chamber 1, so that the first chamber 1 forms an annular water passage 23, the top of the first chamber 1 is provided with a first passage 11, the first passage 11 is communicated with the first chamber 1 and the third chamber 3, the third chamber 3 is communicated with the valve core installation chamber 4 through a direct current passage 14, and the valve core installation chamber 4 is communicated with the second chamber 2 through a direct current water passage 15;

the valve core installation chamber 4 is provided with a valve core 41, and the valve core 41 can isolate the communication between the valve core installation chamber 4 and the straight walking water channel 15 in a sliding way;

a sealing element 7 is arranged between the second chamber 2 and the third chamber 3, the sealing element 7 is movably arranged between the second chamber 2 and the third chamber 3, when the valve core is closed, the sealing element seals the second chamber, the second chamber 2 is not communicated with the first chamber 1, when the valve core is opened, the sealing element 7 movably seals and separates the third chamber 3, and the second chamber 2 is communicated with the first chamber 1.

As shown in fig. 7, after water enters the first chamber 1, the sealing member 7 seals the second chamber 2, so that water cannot directly enter the second chamber 2 from the first chamber 1, and due to the design of the annular water passage 23 of the first chamber 1, water rises to the top of the first chamber 1 through the annular water passage 23. Because the first channel 11 is opened at the top of the first chamber 1, water enters the third chamber 3 from the first channel 11 of the first chamber 1. Since the third chamber 3 communicates with the cartridge installation chamber 4 through the direct flow passage 14, the water introduced into the third chamber 3 is introduced into the cartridge installation chamber 4 from the direct flow passage 14. Since the spool 41 is provided in the spool mounting chamber 4, the spool 41 can slide in the spool mounting chamber 4: when the valve core 41 slides to the top of the valve core installation chamber 4, and the valve core 41 isolates the communication between the valve core installation chamber 4 and the straight-going water channel 15, the valve core installation chamber 4 and the second chamber 3 are in a separation state, water cannot enter the second chamber 3 and only stays in the third chamber 3 and the valve core installation chamber 4, and the second chamber 2 is in a water-free state; when water is in the third chamber 3, the pressure in the third chamber 3 is increased, and the sealing element 7 is pressed, wherein the pressing direction is the direction of the third chamber 3 towards the second chamber 2, so that the sealing element 7 blocks the second chamber 2, and the second chamber 2 cannot be communicated with the first chamber 1;

as shown in fig. 8 to 9, when the valve element 41 does not block the communication between the valve element mounting chamber 4 and the straight travel water passage 15, the third chamber 3 communicates with the valve element mounting chamber 4, and the upper side of the valve element mounting chamber 4 communicates with the straight travel water passage 15. When the water enters the third chamber 3, it flows to the valve element-mounting chamber 4 and then flows to the straight-traveling water passage 15. Water from the straight water passage can only flow into said second chamber 2 because the water flow in the third chamber 3 is insufficient and not fast enough to be directly discharged outside the valve body a. At this time, the second chamber 2 is in a water inlet state, the third chamber 3 is in a water outlet state, when the water in the second chamber 2 increases to exceed the third chamber 3, the pressure of the water in the second chamber 2 increases and is greater than that of the third chamber 3, the pressure of the water applies pressure to the sealing member 7, the pressure applying direction is the direction from the second chamber 2 to the third chamber 3, the sealing member 7 moves towards the third chamber 3, the sealing member 7 no longer blocks the second chamber 2, the second chamber 2 is communicated with the first chamber 1, and the water flows from the first chamber 1 to the second chamber 2 directly as the water entering the first chamber 1 increases and the second chamber 2 is communicated with the first chamber 1.

Preferably, as shown in fig. 3 to 4, the sealing member 7 comprises a sealing diaphragm 72 and a valve cover 71, the sealing diaphragm 72 is provided with a groove 721, and the valve cover 71 is installed in the groove 721;

an annular mounting groove 724 is formed in the other side of the sealing diaphragm 72, the annular mounting groove 724 is sleeved on the outer wall of the annular water channel 23, and the annular mounting groove 724 seals the connection position of the edges of the first chamber and the third chamber 3;

when the sealing diaphragm 72 abuts against the opening of the second chamber 2, the second chamber 2 is not communicated with the first chamber 1, and when the sealing diaphragm 72 is far away from the opening of the second chamber 2, the second chamber 2 is communicated with the first chamber 1. The sealing member 7 is composed of a valve cover 71 and a sealing diaphragm 72, one side of the sealing diaphragm 72 is provided with a groove 721, and the valve cover 71 is arranged in the groove 721 of the sealing diaphragm 72. The other side of the sealing diaphragm 72 is provided with an annular mounting groove 724, the outer wall of the annular water passage 23 is sleeved with the annular mounting groove 724, and the annular mounting groove 724 seals the joint of the edges of the first chamber 1 and the third chamber 3.

When the valve core 41 is closed, the second chamber 2 and the first chamber 1 are in a separated state, water entering the first chamber 1 cannot directly stay in the second chamber 2, but rises to the top of the first chamber 1 from the annular water channel, then enters the third chamber 3 through the first channel 11, and finally enters the valve core installation chamber 4 through the direct-current channel 14. Because the valve element 41 is in the closed state, water cannot enter the second chamber 2 through the straight-travel water passage 15, so that water can only stay in the third chamber 3 and the valve element installation chamber 4. As the water flows in, the pressure of the water in the third chamber 3 becomes greater. The pressure of the water causes the sealing diaphragm 72 to push towards the second chamber 2. Because the material of the sealing diaphragm 72 is flexible rubber, the pressure of water can easily push the sealing diaphragm 72 completely; if the sealing diaphragm 72 is of a hard material, the pressure of the water may not push the sealing diaphragm 72, or if it is pushed, the distance moved is not sufficient, and the sealing diaphragm 72 may not be able to function as intended. Before the second chamber 2 and the first chamber 1 are completely sealed and separated, a gap exists between the second chamber 2 and the first chamber 1 at the position close to the water inlet end, and the gap is an opening of the second chamber 2. When the opening of the sealing diaphragm 72 is embedded in the annular mounting groove 724, the opening is completely sealed, the sealing diaphragm 72 separates the first chamber 1 from the second chamber 2, and water cannot directly flow into the second chamber 2 from the first chamber 1, but enters the top of the first chamber 1 from the annular water channel and then flows into the third chamber 3 from the first channel 11. When the valve body 41 is opened, the valve body installation chamber 4 and the second chamber 2 are communicated through the straight travel water passage 15, and the water in the valve body installation chamber 4 flows from the straight travel water passage 15 to the second chamber 2. When the amount of water flowing into the second chamber 2 increases, the pressure of the water in the second chamber 2 increases, the sealing diaphragm 72 is moved toward the third chamber 3, and the water is slowly discharged from the annular mounting groove 724 at the opening. When the opening is just opened and the gap at the opening is still small, a part of the water entering the first chamber 1 will flow into the second chamber 2 from the opening and a part will also flow into the third chamber 3. When the opening is fully open, the sealing diaphragm 72 fully seals the third chamber 3, and water can only flow into the second chamber 2 from the opening and then out of the valve body from the second chamber 2.

Preferably, as shown in fig. 2, a second channel 12 is provided at the top of the valve element mounting chamber 4, the straight traveling water channel 15 is provided above the valve element mounting chamber 4, and the valve element mounting chamber 4 is communicated with the straight traveling water channel 15 through the second channel 12;

the second chamber 2 is provided with a third channel 13, and the third channel 13 is communicated with the second chamber 2 and the straight walking water channel 15.

The top of the valve core mounting chamber 4 is also provided with a second channel 12, and the valve core mounting chamber 4 is communicated with a straight water channel 15 above the valve core mounting chamber through the second channel 12. The top of the second chamber 2 is also provided with a third channel 13, and the third channel 13 is communicated with the second chamber 2 and the straight walking water channel 15. When the valve core 41 is closed, the sealing diaphragm 72 seals the opening, water enters the first cavity 1, and water enters the annular water channel 23 because the sealing diaphragm 72 separates the first cavity 1 and the second cavity 2, and then reaches the top of the first cavity 1. The water reaching the top of the first chamber 1 flows into the third chamber 3 from the first passage 11, and the third chamber 3 communicates with the spool mount chamber 4 through the direct flow passage 14. Since the spool 41 is closed and the second passage 12 is blocked, water can stay only in the third chamber 3 and the spool mount chamber 4. When the spool 41 is opened, the straight running water passage 15 communicates with the spool installation chamber 4 through the second passage 12, and water in the spool installation chamber 4 flows from the second passage 12 into the straight running water passage 15 and then flows back from the third passage 13 into the second chamber 2. Since the diameter of the third channel 13 is larger than the diameter of the first channel 11, i.e. the water inlet speed of the second chamber 2 is higher than the speed of the third chamber 3, when the water pressure of the second chamber 2 is higher than the third chamber 3, the sealing diaphragm 72 is pushed towards the third chamber 3, the opening is opened and water flows directly from the first chamber 1 into the second chamber 2.

Preferably, as shown in fig. 1, the valve body a further includes a water inlet 6 and a water outlet 5, the water inlet 6 is disposed at the bottom of the valve body a, and the water inlet 6 is communicated with the first chamber 1 through a water inlet channel 16; the water outlet 5 is arranged at the top of the valve body A, and the water outlet 5 is communicated with the second chamber 2 through the third channel 13. Valve body A still is equipped with water inlet 6 and delivery port 5, and water inlet 6 is located valve body A's bottom, and 6 one sections external inlet tubes of water inlet, the other end pass through inhalant canal and first cavity 1 intercommunication. The water outlet 5 is arranged at the top of the valve body A, one end of the water outlet is externally connected with a water outlet pipe, and the other end of the water outlet is communicated with the second cavity 2 through a third channel 13. Namely, the water inlet process of the valve body A: the water from the inlet pipe enters the inlet opening 6 and then enters the first chamber 1 through the inlet passage. The water outlet direction of the valve body A is as follows: the water in the second chamber 2 flows to the water outlet 5 through the third channel 13 and then flows out of the valve body a from the water outlet 5 through the water outlet pipe.

Preferably, a spring 43 is installed in the valve core installation chamber 4, and the spring 43 is connected with the bottom of the valve core 41;

an annular magnet 42 and an external spring 44 are sleeved outside the valve core installation chamber 4, the external spring 44 is connected to the bottom of the annular magnet 42, the annular magnet 42 corresponds to the valve core 41, and the annular magnet 42 drives the valve core 41 to slide in the valve core installation chamber 4. The ring magnet 42 is external to the mobile device. When the valve core 41 is closed, the moving device drives the ring magnet 42 to move downwards to press the external spring 44. Since the ring magnet 42 is attracted to the valve body 41, when the ring magnet 42 moves downward, the valve body 41 also moves downward in the valve body installation chamber 44 following the ring magnet 42, pressing the spring 43. After the valve core 41 moves downwards, the top of the valve core installation chamber 44 is opened, the side surface of the valve core installation chamber 44 is communicated with the direct current channel 14 and the third chamber 3, the top is communicated with the straight traveling water channel 15 through the second channel 12, and the first chamber 1 is communicated with the second chamber 2. When the valve element 41 is open, the moving means moves upwards, the ring magnet 42 is also carried upwards and the outer spring 44 is reset. The valve core 41 corresponds to the annular magnet 42, the valve core 41 slides upwards in the valve core installation chamber 44, the spring 43 resets and slides to the top of the valve core installation chamber 44, the communication between the valve core installation chamber 44 and the direct current channel 14 is cut off, and the first chamber 1 and the second chamber 2 are isolated.

As shown in fig. 5 to 6, a positioning block 723 is disposed at the top of the sealing diaphragm, a mounting opening 31 is disposed at the top of the third chamber 3, and the positioning block 723 is fastened to the mounting opening 31, so that the sealing diaphragm 72 is fixed to the third chamber 3; the positioning block 723 is provided with a connection hole 722, the top of the first chamber 1 is provided with an installation boss 21, and the installation boss 21 is embedded into the connection hole 722, so that the sealing diaphragm 72 is fixed to the first chamber 1.

The top of the sealing diaphragm 72 is provided with a positioning block 723, the top of the third chamber 3 is provided with a mounting opening 31, and the side surface of the sealing diaphragm 72 is tightly attached to the side surface of the third chamber 3 by buckling the positioning block 723 on the mounting opening 31. The positioning block 723 of the sealing diaphragm 72 is further provided with a connecting hole 722 inside, the top of the first chamber 1 is also provided with a mounting boss 21 matched with the connecting hole, one side of the sealing diaphragm 72 is tightly attached to the third chamber 3, the other side of the sealing diaphragm is also embedded in the connecting hole 722 through the mounting boss 21 and is tightly attached to the side of the first chamber 1, and the sealing diaphragm 72 is thus mounted between the first chamber 1 and the third chamber 3 and separates the first chamber 1 from the third chamber 3. The first chamber 1 and the third chamber 3 are in complete sealing with each other because of the sealing diaphragm 72, and the communication between them requires a specific passage.

The positioning block 723 is buckled with the mounting opening 31, so that the top of the sealing diaphragm 72 fixed with the third chamber 3 is provided with a connecting hole 722,

preferably, the side surface of the third chamber 3 further includes an annular mounting hole 32, the side surface of the first chamber 1 is provided with an annular mounting block 22, and the third chamber 3 is connected with the first chamber 1 so that the annular mounting hole 32 is clamped on the annular mounting block 22. The side of the third chamber 3 is provided with an annular mounting hole 32 and the side of the corresponding first chamber 1 is also provided with an annular mounting block 22. The third chamber 3 and the first chamber 1 are fixed by snap fitting the annular mounting block 22 to the annular mounting hole 32. The valve body A is simple in structure and connection mode, so that the valve body A is convenient to mount and dismount, and cost is reduced.

The technical principle of the present invention is described above with reference to specific embodiments. The description is made for the purpose of illustrating the principles of the invention and should not be taken in any way as limiting the scope of the invention. Based on the explanations herein, those skilled in the art will be able to conceive of other embodiments of the present invention without any inventive effort, which would fall within the scope of the present invention.

Claims (7)

1. A control valve for the on-off of a waterway system comprises a valve body (A), and is characterized in that:

the valve body (A) comprises a first cavity (1), a second cavity (2), a third cavity (3) and a valve core mounting cavity (4), the second cavity (2) is convexly buckled at the middle part of the first cavity (1) to enable the first cavity (1) to form an annular water channel (23), a first channel (11) is formed in the top of the first cavity (1), the first channel (11) is communicated with the first cavity (1) and the third cavity (3), the third cavity (3) is communicated with the valve core mounting cavity (4) through a direct current channel (14), and the valve core mounting cavity (4) is communicated with the second cavity (2) through a straight water channel (15);

the valve core mounting chamber (4) is provided with a valve core (41), and the valve core (41) can isolate the communication between the valve core mounting chamber (4) and the straight walking water channel (15) in a sliding way;

a sealing element (7) is arranged between the second chamber (2) and the third chamber (3), the sealing element (7) is movably arranged between the second chamber (2) and the third chamber (3), when the valve core is closed, the sealing element seals the second chamber, the second chamber (2) is not communicated with the first chamber (1), when the valve core is opened, the sealing element (7) movably seals and separates the third chamber (3), and the second chamber (2) is communicated with the first chamber (1).

2. The control valve for on-off of a waterway system according to claim 1, wherein:

the sealing element (7) comprises a sealing diaphragm (72) and a valve cover (71), the sealing diaphragm (72) is provided with a groove (721), and the valve cover (71) is installed in the groove (721);

an annular mounting groove (724) is formed in the other side of the sealing diaphragm (72), the annular mounting groove (724) is sleeved on the outer wall of the annular water channel (23), and the annular mounting groove (724) seals the connecting position of the edges of the first chamber and the third chamber (3);

when the sealing diaphragm (72) is pressed against the opening of the second chamber (2), the second chamber (2) is not communicated with the first chamber (1), and when the sealing diaphragm (72) is far away from the opening of the second chamber (2), the second chamber (2) is communicated with the first chamber (1).

3. The control valve for on-off of a waterway system according to claim 1, wherein:

a second channel (12) is arranged at the top of the valve core mounting cavity (4), the straight walking water channel (15) is arranged above the valve core mounting cavity (4), and the valve core mounting cavity (4) is communicated with the straight walking water channel (15) through the second channel (12);

the second cavity (2) is provided with a third channel (13), and the third channel (13) is communicated with the second cavity (2) and the straight walking water channel (15).

4. The control valve for on-off of a waterway system according to claim 3, wherein:

the valve body (A) further comprises a water inlet (6) and a water outlet (5), the water inlet (6) is formed in the bottom of the valve body (A), and the water inlet (6) is communicated with the first cavity (1) through a water inlet channel (16);

the water outlet (5) is arranged at the top of the valve body (A), and the water outlet (5) is communicated with the second cavity (2) through the third channel (13).

5. The control valve for on-off of a waterway system according to claim 1, wherein:

a spring (43) is arranged in the valve core mounting cavity (4), and the spring (43) is connected with the bottom of the valve core (41);

the valve core mounting structure is characterized in that an annular magnet (42) and an external spring (44) are sleeved outside the valve core mounting cavity (4), the external spring (44) is connected with the bottom of the annular magnet (42), the annular magnet (42) corresponds to the valve core (41), and the annular magnet (42) can drive the valve core (41) to slide in the valve core mounting cavity (4).

6. The control valve for on-off of a waterway system according to claim 2, wherein:

a positioning block (723) is arranged at the top of the sealing diaphragm, a mounting opening (31) is formed in the top of the third chamber (3), and the mounting opening (31) is buckled through the positioning block (723), so that the sealing diaphragm (72) is fixed with the third chamber (3);

the positioning block (723) is provided with a connecting hole (722), the top of the first chamber (1) is provided with an installation boss (21), and the installation boss (21) is embedded into the connecting hole (722) so that the sealing diaphragm (72) is fixed with the first chamber (1).

7. The control valve for on-off of a waterway system according to claim 1, wherein:

the side surface of the third chamber (3) further comprises an annular mounting hole (32), the side surface of the first chamber (1) is provided with an annular mounting block (22), and the third chamber (3) is connected with the first chamber (1) so that the annular mounting hole (32) is clamped on the annular mounting block (22).

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