Fluid control valve

Abstract

The invention discloses a fluid control valve which comprises a valve element mechanism, a triggering mechanism and a controlled mechanism. Magnetic acting force of a magnet part of the valve element mechanism on the driving valve element forms first magnetic retention force used for keeping the driving valve element at a first position; and after the active valve element is switched to the second position, the magnetic acting force of the magnet component on the active valve element forms second magnetic retention force used for keeping the active valve element at the second position. By configuring the first magnetic retention force for keeping the active valve element at the first position and the second magnetic retention force for keeping the active valve element at the second position, the fluid control valve obtains an action threshold value, so that the fluid control valve is prevented from frequently acting along with pressure fluctuation when the pressure of fluid fluctuates in a small range, and the fluid control valve is prevented from being damaged. And therefore, frequent actions of valve parts controlled by the fluid control valve are avoided.

Description

Technical Field

[0001] This invention relates to the field of fluid valve technology, and more particularly to a fluid control valve. Background Technology

[0002] In fluid systems, fluid control valves are used to control the flow rate and on / off state of fluid by controlling valve components (e.g., on / off valves, flow regulating valves) in the pipeline of the fluid system. The fluid control valves operate based on pressure changes in the fluid within the pipeline of the fluid system (which may be the same pipeline as the pipeline of the aforementioned valve component or a different pipeline) to achieve control of the valve component. However, fluid control valves in the prior art activate after responding to a very small range of pressure changes (i.e., the fluid control valve has only a small activation threshold), resulting in frequent activation of the valve component. Summary of the Invention

[0003] In view of the above-mentioned technical problems existing in the prior art, the embodiments of the present invention provide a fluid control valve.

[0004] To solve the above-mentioned technical problems, the technical solution adopted in the embodiments of the present invention is as follows:

[0005] A fluid control valve includes a valve core mechanism, a triggering mechanism, and a controlled mechanism;

[0006] The valve core mechanism includes:

[0007] The valve body contains an active valve chamber.

[0008] An active valve core is disposed in the active valve chamber and is movable along the active valve chamber, such that the active valve core has a first position and a second position located at both ends of the moving stroke;

[0009] A magnet component for applying a magnetic force to the active valve core;

[0010] A force-applying component, disposed in the valve body, for applying force to the active valve core;

[0011] The triggering mechanism includes: a pressure acquisition port and a pressure-bearing driving component disposed at the pressure acquisition port;

[0012] The controlled mechanism responds to the action of the active valve core by sending a control signal to control the action of the valve components in the fluid system; wherein:

[0013] After the active valve core switches to the first position, the magnetic force exerted by the magnet component on the active valve core constitutes a first magnetic holding force for holding the active valve core in the first position; after the active valve core switches to the second position, the magnetic force exerted by the magnet component on the active valve core constitutes a second magnetic holding force for holding the active valve core in the second position.

[0014] The direction of the pressure exerted by the fluid at the pressure acquisition port on the pressure-bearing drive component is opposite to the direction of the force exerted by the force-applying component on the active valve core.

[0015] Preferably,

[0016] The magnet component includes an active magnet and a positioning magnet. The active magnet is disposed in the active valve core, and the positioning magnet is disposed in the valve body and adjacent to the active magnet.

[0017] The magnetic force between the active magnet and the positioning magnet constitutes a first magnetic holding force for holding the active valve core in a first position and a second magnetic holding force for holding the active valve core in a second position.

[0018] Preferably, the fluid control valve further includes a bias magnet;

[0019] The magnetic forces between the active magnet, the positioning magnet, and the bias magnet constitute a first magnetic holding force for holding the active valve core in a first position and a second magnetic holding force for holding the active valve core in a second position. The bias magnet causes the first magnetic holding force to be greater than or less than the second magnetic holding force.

[0020] Preferably, the force-applying component is a spring; the spring is sleeved on the active valve core and located between the pressure-bearing drive component and the valve body to apply elastic force to the pressure-bearing drive component.

[0021] Preferably,

[0022] The pressure-bearing drive component is floatingly connected to the active valve core and has a preset floating stroke relative to the active valve core, so that when the active valve core switches between the first position and the second position, the compression or reset amount of the spring is less than the movement stroke of the active valve core.

[0023] Preferably,

[0024] The bias magnet is disposed on the valve body, and the bias magnet forms a magnetic force with the active magnet, so that the first magnetic holding force is greater than or less than the second magnetic holding force.

[0025] or,

[0026] The bias magnet is disposed on the active valve core, and the bias magnet forms a magnetic force with the positioning magnet, so that the first magnetic holding force is greater than or less than the second magnetic holding force.

[0027] Preferably,

[0028] The bias magnet is disposed on the valve body and located on one side of the second position of the active valve core in the axial direction and opposite to the active magnet. After the active valve core is switched to the second position, a magnetic attraction is formed between the bias magnet and the active magnet, so that the second magnetic holding force is greater than the first magnetic holding force.

[0029] or,

[0030] The bias magnet is disposed on the valve body and located on one side of the second position of the active valve core in the axial direction and opposite to the active magnet. After the active valve core is switched to the second position, a magnetic repulsion force is formed between the bias magnet and the active magnet, so that the first magnetic holding force is greater than the second magnetic holding force.

[0031] Preferably,

[0032] The bias magnet is disposed on the valve body and located on one side of the radial direction of the second position of the active valve core. After the active valve core is switched to the second position, a magnetic attraction is formed between the bias magnet and the active magnet, so that the second magnetic holding force is greater than the first magnetic holding force.

[0033] or,

[0034] The bias magnet is disposed on the valve body and located on one side of the radial direction of the first position of the active valve core. After the active valve core is switched to the first position, a magnetic attraction is formed between the bias magnet and the active magnet, so that the first magnetic holding force is greater than the second magnetic holding force.

[0035] Preferably, the bias magnet is adjacent to the positioning magnet.

[0036] Preferably, the bias magnet and the positioning magnet are axially separated.

[0037] Preferably,

[0038] The bias magnet is disposed on the active valve core and located on one side of the active valve core in the first position. After the active valve core is switched to the second position, a magnetic attraction is formed between the bias magnet and the positioning magnet, so that the second magnetic holding force is greater than the first magnetic holding force.

[0039] or,

[0040] The bias magnet is disposed on the active valve core and located on one side of the active valve core in the first position. After the active valve core is switched to the second position, a magnetic repulsion force is formed between the bias magnet and the positioning magnet, so that the first magnetic holding force is greater than the second magnetic holding force.

[0041] Preferably, the bias magnet is configured to have an adjustable position or adjustable magnetic field strength to adjust the magnetic force between the bias magnet and the positioning magnet or the active magnet.

[0042] Preferably, the controlled mechanism includes a fluid controlled mechanism and / or an electromagnetic controlled mechanism.

[0043] Preferably, the fluid control mechanism includes:

[0044] A passive valve chamber, which is disposed within the valve body;

[0045] A passive valve core, which is disposed in the passive valve cavity and is movable along the passive valve cavity;

[0046] A passive magnet is disposed in the passive valve core;

[0047] A controlled port is disposed at the axial end of the passive valve chamber, and the controlled port is in communication with the hydraulic control port of the valve component of the fluid system; wherein:

[0048] The passive valve core is driven by the active valve core through magnetic force, so that when the active valve core switches between a first position and a second position, the passive valve core moves along the passive valve cavity to close and open the controlled port, thereby controlling the flow of fluid through the controlled port and sending a fluid signal to the valve component.

[0049] Preferably, the electromagnetically controlled mechanism is an electromagnetic sensor, which directly or indirectly responds to the change in magnetic field caused by the change in the position of the active valve core and sends an electrical signal.

[0050] Preferably, the magnetic pole direction of the active magnet is consistent with the moving direction of the active valve core;

[0051] The magnetic pole direction of the positioning magnet is consistent with the magnetic pole direction of the active magnet;

[0052] or,

[0053] The magnetic pole direction of the positioning magnet is perpendicular to the magnetic pole direction of the active magnet.

[0054] Preferably,

[0055] The active magnet is located radially inside the positioning magnet;

[0056] or,

[0057] The active magnet is located radially outside the positioning magnet.

[0058] Preferably, the pressure-bearing driving component includes a flexible diaphragm disposed at the pressure acquisition port and a contact connected to the active valve core and driven by the flexible diaphragm through contact with the flexible diaphragm;

[0059] or,

[0060] The pressure-bearing drive component is a piston located at the pressure acquisition port and connected to the active valve core.

[0061] Compared with the prior art, the beneficial effects of the fluid control valve disclosed in this invention are:

[0062] 1. By configuring a first magnetic holding force that keeps the active valve core in the first position and a second magnetic holding force that keeps the active valve core in the second position, the fluid control valve obtains an action threshold to avoid the fluid control valve from frequently operating with pressure fluctuations when the fluid pressure fluctuates within a small range, thereby avoiding frequent operation of the valve components controlled by the fluid control valve.

[0063] 2. Other advantages of the present invention are described in the specific embodiments.

[0064] It should be understood that the foregoing general description and the following detailed description are exemplary and illustrative only, and are not intended to limit the invention.

[0065] The overview of various implementations or examples of the technology described in this invention is not a complete disclosure of the full scope or all features of the disclosed technology. Attached Figure Description

[0066] In drawings that are not necessarily drawn to scale, the same reference numerals may describe similar parts in different views. The same reference numerals with or without letter suffixes may indicate different instances of similar parts. The drawings generally illustrate various embodiments by way of example rather than limitation and, together with the description and claims, serve to explain embodiments of the invention. Where appropriate, the same reference numerals are used in all drawings to refer to the same or similar parts. Such embodiments are illustrative and not intended to be exhaustive or exclusive embodiments of the apparatus or method.

[0067] Figure 1A A front sectional view of the fluid control valve of the first specific structure provided by the present invention in its usage state (the active valve core is in the first position).

[0068] Figure 1BA front sectional view of the fluid control valve of the first specific structure provided by the present invention in its usage state (the active valve core is in the second position).

[0069] Figure 2A A main sectional view of the fluid control valve of the second specific structure provided by the present invention in its usage state (the active valve core is in the first position).

[0070] Figure 2B A main sectional view of the fluid control valve of the second specific structure provided by the present invention in its usage state (the active valve core is in the second position).

[0071] Figure 3A A main sectional view of the fluid control valve with the third specific structure provided by the present invention in its usage state (the active valve core is in the first position).

[0072] Figure 3B A main sectional view of the fluid control valve with the third specific structure provided by the present invention in its usage state (the active valve core is in the second position).

[0073] Figure 4A A main sectional view of the fluid control valve with the fourth specific structure provided by the present invention in its usage state (the active valve core is in the first position).

[0074] Figure 4B This is a main sectional view of the fluid control valve with the fourth specific structure provided by the present invention in its usage state (the active valve core is in the second position).

[0075] Figure 5A A main sectional view of the fluid control valve of the fifth specific structure provided by the present invention in its usage state (the active valve core is in the first position).

[0076] Figure 5B A main sectional view of the fluid control valve of the fifth specific structure provided by the present invention in its usage state (the active valve core is in the second position).

[0077] Figure 6A A main sectional view of the fluid control valve of the sixth specific structure provided by the present invention in its usage state (the active valve core is in the first position).

[0078] Figure 6B A main sectional view of the fluid control valve of the sixth specific structure provided by the present invention in its usage state (the active valve core is in the second position).

[0079] Figure 7A This is a main sectional view of the fluid control valve with the seventh specific structure provided by the present invention in its usage state (the active valve core is in the first position).

[0080] Figure 7BA main sectional view of the fluid control valve of the seventh specific structure provided by the present invention in its usage state (the active valve core is in the second position).

[0081] Figure 8 This refers to the range of fluid pressure changes that the fluid control valve can respond to when the second magnetic holding force is greater than the first magnetic holding force.

[0082] Figure 9 This refers to the range of fluid pressure changes that the fluid control valve can respond to when the first magnetic holding force is greater than the second magnetic holding force.

[0083] Figure 10 This is a schematic diagram of the structure of the fluid control valve provided by the present invention used to control the liquid level in a water tank.

[0084] Figure label:

[0085] 10-Valve core mechanism; 11-Valve body; 111-Active valve chamber; 112-Adjusting nut; 113-Stud; 12-Active valve core; 131-Active magnet; 132-Positioning magnet; 133-Bias magnet; 20-Triggering mechanism; 21-Pressure acquisition port; 22-Flexible diaphragm; 23-Contact; 231-Floating head; 232-Floating chamber; 30-Force application component; 40-Controlled mechanism; 411-First port; 412-Second port; 42-Passive valve chamber; 43-Passive valve core; 44-Passive magnet; 45-Electromagnetic sensor; 100-Fluid control valve; 200-Diaphragm valve; 201-Diaphragm; 202-Accumulation port; 300-Water tank; 400-Water supply pipeline. Detailed Implementation

[0086] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the described embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0087] Unless otherwise defined, the technical or scientific terms used in this invention shall have the ordinary meaning understood by one of ordinary skill in the art to which this invention pertains. The terms "first," "second," and similar terms used in this invention do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Terms such as "comprising" or "including" mean that the element or object preceding the word encompasses the elements or objects listed following the word and their equivalents, without excluding other elements or objects. Terms such as "connected" or "linked" are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. Terms such as "upper," "lower," "left," and "right" are used only to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0088] To keep the following description of the embodiments of the present invention clear and concise, detailed descriptions of known functions and known components are omitted.

[0089] This invention discloses a fluid control valve 100, which is installed on a pipeline of a fluid system to collect the pressure of the fluid in the pipeline and control the action of valve components on the pipeline based on the collected pressure changes, thereby controlling the on / off state of the pipeline where the valve component is located or the flow rate of the fluid. The pipeline where the valve component is located can be the same pipeline as the pipeline where the fluid control valve 100 is located, or it can be another pipeline in the fluid system. The fluid system can be a water purification system, and the valve component controlled by the fluid control valve 100 can be a throttle valve, a flow valve, or an on / off valve, etc. The pipeline where the valve component is located can be a tap water pipeline for supplying raw water (tap water) to the filter membrane, a return pipeline for returning concentrate from the concentrate side of the filter membrane, or a water supply pipeline 400 for filling the water tank 300. This invention does not limit the position and function of the fluid control valve 100 and the pipeline where the valve component is located, nor does it limit the type or specific structure of the valve component.

[0090] like Figure 1A and Figure 1B As shown, the fluid control valve 100 disclosed in this invention includes: a valve core mechanism 10, a triggering mechanism 20, and a controlled mechanism 40.

[0091] The valve core mechanism 10 includes a valve body 11, an active valve core 12, a magnet component, and a force-applying component 30. The valve body 11 has a linearly extending active valve chamber 111. The active valve core 12 is disposed within the active valve chamber 111 and is capable of linear movement along the active valve chamber 111, thus having a first position and a second position located at both ends of its displacement stroke. The force-applying component 30 is disposed in the valve body 11 for applying force to the active valve core 12.

[0092] The triggering mechanism 20 includes a pressure acquisition port 21 and a pressure-bearing drive component disposed at the pressure acquisition port 21. The pressure acquisition port 21 is connected to the pipeline where the fluid control valve 100 is located, so that the fluid in the pipeline acts on the pressure-bearing drive component, causing the pressure-bearing drive component to exert force on the active valve core 12 to drive the active valve core 12. The force exerted by the fluid on the active valve core 12 by the pressure-bearing drive component is opposite to the force exerted by the force-applying component 30 on the active valve core 12.

[0093] The present invention provides, by way of example, two types of pressure-bearing drive components.

[0094] The first type of pressure-bearing drive component includes a flexible diaphragm 22 disposed at the pressure acquisition port 21 and a contact 23 connected to the active valve core 12 and driven by the flexible diaphragm 22 through contact with it (this type of structure is shown in the attached figure). The flexible diaphragm 22 drives the active valve core 12 by deformation and with the aid of the contact 23. The flexible diaphragm 22 and contact 23 are selected as the pressure-bearing drive component mainly for applications with low working pressure.

[0095] The second type of pressure-bearing drive component: This type of drive component is a piston (not shown in the attached diagram) located at the pressure acquisition port 21 and connected to the active valve core 12. The piston drives the active valve core 12 by moving. Using a piston as the pressure-bearing drive component is mainly applicable to working conditions with higher pressures.

[0096] For ease of explanation of the fluid control valve 100, it can be assumed that the first position of the active valve core 12 is aligned with the direction of the force applied by the force-applying component 30 to the active valve core 12, and thus, the second position of the active valve core 12 is aligned with the direction of the force applied by the fluid to the active valve core 12. Figure 1A , Figure 1B Taking the disclosed structure as an example, the direction of the force exerted by the fluid on the active valve core 12 is upward, and the direction of the force exerted by the force-applying component 30 on the active valve core 12 is downward. Therefore, as Figure 1A As shown, the lowest position of the active valve core 12 is the first position of the active valve core 12, as... Figure 1B As shown, the high position of the active valve core 12 is the second position of the active valve core 12.

[0097] A magnetic component is disposed in the valve body 11 to apply a magnetic force to the active valve core 12. Specifically, after the active valve core 12 is switched to the first position, the magnetic force exerted by the magnetic component on the active valve core 12 constitutes a first magnetic holding force for holding the active valve core 12 in the first position; after the active valve core 12 is switched to the second position, the magnetic force exerted by the magnetic component on the active valve core 12 constitutes a second magnetic holding force for holding the active valve core 12 in the second position.

[0098] In this invention, the first magnetic holding force and the second magnetic holding force should be understood as:

[0099] The first magnetic holding force is a magnetic force used to prevent the active valve core 12 from switching from the first position to the second position. Accordingly, the magnitude of the first magnetic holding force should be equal to the force that drives the active valve core 12 to switch from the first position to the second position. The direction of the first magnetic holding force is opposite to the direction of movement of the active valve core 12. The second magnetic holding force is a magnetic force used to prevent the active valve core 12 from switching from the second position to the first position. Accordingly, the magnitude of the second holding force should be equal to the force that drives the active valve core 12 to switch from the second position to the first position. The direction of the second magnetic holding force is opposite to the direction of movement of the active valve core 12.

[0100] Since the direction of the force exerted by the fluid on the active valve core 12 is towards the second position, and is opposite to the direction of the first magnetic holding force and the same as the direction of the second magnetic holding force, and the direction of the force exerted by the force-applying component 30 on the active valve core 12 is towards the first position, and is the same as the direction of the first magnetic holding force and the opposite to the direction of the second magnetic holding force, and the direction of the force exerted by the fluid on the active valve core 12 is opposite to the direction of the force exerted by the force-applying component 30 on the active valve core 12, the mechanical inequality that causes the active valve core 12 to switch between the first position and the second position is as follows.

[0101] The mechanical inequality that causes the active valve core 12 to switch from the first position to the second position is:

[0102] F 流体 =P 流体 S>F 施力部件 +F 磁1

[0103] The mechanical inequality that causes the active valve core 12 to switch from the second position to the first position is:

[0104] F 流体 =P 流体 S < F 施力部件 -F 磁2

[0105] in:

[0106] F 施力部件 F is the force applied by the force-applying component 30 to the active valve core 12. 施力部件 F is a constant; 磁1 For the first magnetic holding force, F 磁2 For the second magnetic holding force, F 磁1 F 磁2 F is a constant; 流体 P is the force exerted by the fluid on the active valve core 12. 流体S is the pressure (or intensity) of the fluid in the pipeline, S is the projected area of ​​the fluid acting on the pressure-bearing drive component (e.g., flexible diaphragm 22) in the direction of movement of the active valve core 12, S is a constant, and P is a constant. 流体 As a variable, therefore, F 流体 F is a variable. 流体 With P 流体 They exhibit a linear proportional relationship.

[0107] When F 流体 Increased and greater than F 施力部件 With F 磁1 When F is in the same position, the active valve core 12 will switch from the first position to the second position; and when F is in the same position... 流体 Decrease and less than F 施力部件 With F 磁2 When the difference is reached, the active valve core 12 will switch from the second position to the first position, thus obtaining the following balance equation:

[0108] The mechanical equilibrium equation that causes the active valve core 12 to switch from the first position to the second position is:

[0109] F 流体1 =P 流体1 S = F 施力部件 +F 磁1

[0110] The mechanical equilibrium equation that causes the active valve core 12 to switch from the second position to the first position is:

[0111] F 流体2 =P 流体2 S = F 施力部件 -F 磁2

[0112] Combining the two equilibrium equations above, we can derive:

[0113] F 流体1 -F 流体2 =(P 流体1 -P 流体2 S = F 磁1 +F 磁2

[0114] in:

[0115] F 流体1 To enable the active valve core 12 to switch from the first position to the second position, F 流体2 To enable the active valve core 12 to switch from the second position to the first position, P is the force application node for the fluid. 流体1 To enable the pressure node of the fluid in the pipeline to switch the active valve core 12 from the first position to the second position, P 流体2 The pressure node of the fluid in the pipeline is used to switch the active valve core 12 from the second position to the first position.

[0116] From the above inequalities and equilibrium equations, it can be seen that:

[0117] 1. P 流体1 Greater than P 流体2 Therefore, the pressure P of the fluid that causes the active valve core 12 to switch from the first position to the second position. 流体 The pressure P of the fluid that causes the active valve core 12 to switch from the second position to the first position is greater than the pressure of the fluid. 流体 .

[0118] 2. P 流体1 -P 流体2 The pressure variation range node of the fluid that enables the active valve core 12 to switch between a first position and a second position, the pressure variation range node characterizing the operating threshold of the fluid control valve 100 of the present invention, the pressure variation range node depends on the first magnetic holding force F 磁1 With the second magnetic holding force F 磁2 The sum of P, let's take P as an example. 流体1 -P 流体2 Represented by △P, such as Figure 8 and Figure 9 As shown, therefore, by adjusting the first magnetic holding force F 磁1 With the second magnetic holding force F 磁2 The sum of these forces can adjust the pressure variation range node ΔP of the fluid that allows the active valve core 12 to switch between the second and third positions. Therefore, by configuring a first magnetic holding force that holds the active valve core 12 in the first position and a second magnetic holding force that holds the active valve core 12 in the second position, the fluid control valve 100 obtains an operating threshold. This prevents the fluid control valve 100 from frequently operating due to pressure fluctuations within a small range, thereby preventing frequent operation of the valve components controlled by the fluid control valve 100.

[0119] 3. P 流体1 The pressure node P is the fluid pressure node that switches the active valve core 12 to the second position. 流体1 Depends on F 施力部件 With F 磁1 The sum of, therefore, while maintaining F 施力部件 Under constant conditions, by increasing F 磁1 P can be increased 流体1 The value of , which in turn causes the fluid pressure P to... 流体 A significant increase is needed to switch the active valve core 12 to the second position; correspondingly, by reducing F... 磁1 It can reduce P 流体1 The value of , which in turn causes the fluid pressure P to... 流体 A small increase is enough to switch the active valve core 12 to the second position. P 流体2To enable the active valve core 12 to switch to the first position of the fluid pressure node, this pressure node P 流体2 Depends on F 施力部件 With F 磁2 The difference, therefore, in order to ensure F 施力部件 Under constant conditions, by increasing F 磁2 It can reduce P 流体2 The value of , which in turn causes the fluid pressure P to... 流体 A significant reduction is needed to switch the active valve core 12 to the first position; correspondingly, by reducing F... 磁2 P can be increased 流体1 The value of , which in turn causes the fluid pressure P to... 流体 A small drop in pressure is enough to switch the active valve core 12 to the first position. Therefore, by increasing F... 磁1 This allows the fluid control valve 100 to respond to relatively high fluid pressure P. 流体 Only then did we switch to the second position, by decreasing F 磁1 This allows the fluid control valve 100 to respond to relatively low fluid pressure P. 流体 You can then switch to the second position; by increasing F 磁2 This allows the fluid control valve 100 to respond to relatively low fluid pressure P. 流体 Only after switching to the first position, by decreasing F 磁2 This allows the fluid control valve 100 to respond to relatively high fluid pressure P. 流体 This allows you to switch to the first position. In other words, by increasing F... 磁1 This can reduce the sensitivity of the fluid control valve 100 in responding to a pressure increase and switching to the second position by reducing F. 磁1 This can improve the sensitivity of the fluid control valve 100 in responding to pressure increases and switching to the second position; by increasing F 磁2 This can reduce the sensitivity of the fluid control valve 100 in responding to a pressure decrease and switching to the first position by reducing F. 磁1 This can improve the sensitivity of the fluid control valve 100 in responding to a pressure decrease and switching to the first position.

[0120] 4. If the fluid in the pipeline where the fluid control valve 100 of the present invention is located needs to be set to a working pressure P0, preferably, F... 施力部件 Configured to adapt to P0, that is, to make F 施力部件 =P0S, thus causing the active valve core 12 to switch to the second position by an increased pressure fluctuation value P. 流体1 -P0 (i.e., △P1) can be obtained from F 磁1 The setting enables the active valve core 12 to switch to the first position with a reduced pressure fluctuation value P0-P. 流体2 (That is, △P2) can be obtained from F 磁2 Setting. If F磁1 The value of F 磁2 If the values ​​are set the same, then the pressure fluctuation value ΔP2 that causes the active valve core 12 to switch to the first position is the same as the pressure fluctuation value ΔP1 that causes the active valve core 12 to switch to the second position. That is, the sensitivity of the fluid control valve 100 to switch to the second position in response to an increase in pressure is the same as the sensitivity of the fluid control valve 100 to switch to the first position in response to a decrease in pressure. Figure 9 As shown, if F 磁1 The value is greater than F 磁2 If the value of ΔP1 is greater than the pressure fluctuation value ΔP2 that causes the active valve core 12 to switch to the second position, then the sensitivity of the fluid control valve 100 to switch to the second position in response to an increase in pressure is less than the sensitivity of the fluid control valve 100 to switch to the first position in response to a decrease in pressure. Figure 8 As shown, if F 磁1 The value is less than F 磁2 If the value of ΔP1 is less than the pressure fluctuation value ΔP2 that causes the active valve core 12 to switch to the second position, then the sensitivity of the fluid control valve 100 to switch to the second position in response to pressure increase is greater than the sensitivity of the fluid control valve 100 to switch to the first position in response to pressure decrease.

[0121] 5. F should be guaranteed 施力部件 Greater than F 磁2 To avoid even P 流体2 When the value is reduced to 0, the active valve core 12 cannot switch from the second position to the first position.

[0122] The magnet component includes at least an active magnet 131 and a positioning magnet 132. The first magnetic holding force and the second magnetic holding force are formed by the magnetic force between the active magnet 131 and the positioning magnet 132. The active magnet 131 is disposed on the active valve core 12, and the positioning magnet 132 is disposed on the valve body 11.

[0123] In some embodiments, such as Figure 1A and Figure 1B As shown, the magnet component includes only an active magnet 131 and a positioning magnet 132. The first magnetic holding force and the second magnetic holding force are formed by the magnetic force between the active magnet 131 and the positioning magnet 132.

[0124] In some embodiments, the active magnet 131 and the positioning magnet 132 in the magnet component can both be magnets, or one of them can be a magnet and the other can be an iron component that can form a magnetic force with the magnet.

[0125] In some embodiments, such as Figure 2A and Figure 2BAs shown, in addition to the active magnet 131 and the positioning magnet 132, the magnet component also includes a bias magnet 133. The first magnetic holding force and the second magnetic holding force are formed by the magnetic forces between the active magnet 131, the positioning magnet 132 and the bias magnet 133.

[0126] This invention discloses the following arrangements of magnet components.

[0127] The first arrangement of the magnet components:

[0128] like Figure 1A and Figure 1B As shown, the magnet component includes an active magnet 131 and a positioning magnet 132. The active magnet 131 is disposed on the active valve core 12, and the positioning magnet 132 is fixedly disposed on the valve body 11. The magnetic pole direction of the active magnet 131 is consistent with the moving direction of the active valve core 12. The active magnet 131 is arranged around the positioning magnet 132. The magnetic pole direction of the active magnet 131 is the same as that of the positioning magnet 132. The opposite magnetic poles of the active magnet 131 and the positioning magnet 132 have the same orientation. The positioning magnet 132 is formed by stacking two magnet units in the length direction. The active magnet 131 includes one magnet unit, and the length of the active magnet 131 is half the length of the positioning magnet 132.

[0129] It should be noted that:

[0130] In this invention, "opposite magnetic poles facing the same direction" means that the magnetic poles of different polarities of two magnets face the same direction. For example, if the N pole of one magnet faces upward (downward) and the S pole of the other magnet also faces upward (downward), then the opposite magnetic poles of the two magnets are said to face the same direction. Correspondingly, if the N pole of one magnet faces upward and the N pole of the other magnet also faces upward, then the like magnetic poles of the two magnets are said to face the same direction.

[0131] Magnetic pole direction refers to the indicated direction of the N and S poles of a magnet. For example, for a magnet with the N pole pointing upwards (downwards) and the S pole pointing downwards (upwards), the magnetic pole direction is vertical. Conversely, for a magnet with the N pole pointing to the left (right) and the S pole pointing to the right (left), the magnetic pole direction is horizontal. Generally, two magnets with the same magnetic pole direction can be understood as being parallel; two magnets with perpendicular magnetic pole directions can be understood as being perpendicular; the length of a magnet can be understood as its dimension along the magnetic pole direction, and the thickness of a magnet can be understood as its dimension perpendicular to the magnetic pole direction.

[0132] like Figure 1A As shown, the active valve core 12 is switched to the first position and held in the first position. At this time, the active magnet 131 is opposite to one of the magnet units of the positioning magnet 132; as Figure 1B As shown, the active valve core 12 is switched to the second position and held in the second position. At this time, the active valve body 11 is opposite to another magnetic unit of the positioning magnet 132. Since the two magnetic units of the positioning magnet 132 have the same structure, size, and magnetic strength, the force that drives the active valve core 12 from the first position to the second position to overcome the first magnetic holding force is basically equal to the force that drives the active valve core 12 from the second position to the first position to overcome the second magnetic holding force. Therefore, this arrangement of the magnetic components makes the first magnetic holding force equal to the second magnetic holding force. If F 施力部件 When configured to be compatible with P0, the magnetic components arranged in this way make the fluid control valve 100 switch to the second position in response to an increase in pressure as sensitive as the fluid control valve 100 switches to the first position in response to a decrease in pressure.

[0133] The second arrangement of the magnet components:

[0134] like Figure 2A and Figure 2B As shown, compared to the first arrangement, the magnet component includes an active magnet 131 and a positioning magnet 132, as well as a bias magnet 133.

[0135] The active magnet 131 and positioning magnet 132 of this arrangement are identical in structure, size, and arrangement to those of the active magnet 131 and positioning magnet 132 in the first arrangement. The difference is the addition of a bias magnet 133. This bias magnet 133 is disposed on the valve body 11 and located on one side of the second position of the active valve core 12 in the axial direction, opposite to the active magnet 131. Furthermore, the bias magnet 133 and the opposite magnetic poles of the active magnet 131 are opposite to each other. Thus, as... Figure 2B As shown, after the active valve core 12 switches to the second position, the active magnet 131 approaches the bias magnet 133 and forms a magnetic attraction between them, as... Figure 2A As shown, after the active valve core 12 switches to the first position, the active magnet 131 moves away from the bias magnet 133 and the magnetic attraction almost disappears. Therefore, the bias magnet 133 makes the force required to overcome the first magnetic holding force to drive the active valve core 12 from the first position to the second position less than the force required to overcome the second magnetic holding force to drive the active valve core 12 from the second position to the first position. Thus, this arrangement of the magnet components makes the first magnetic holding force less than the second magnetic holding force. If F 施力部件 When configured to be compatible with P0, the magnetic components arranged in this way make the fluid control valve 100 more sensitive to switching to the second position in response to an increase in pressure than the fluid control valve 100 is more sensitive to switching to the first position in response to a decrease in pressure.

[0136] Accordingly, it can be understood that by aligning the bias magnet 133 with the active magnet 131 of the same polarity, after the active valve core 12 switches to the second position, the active magnet 131 approaches the bias magnet 133, creating a magnetic repulsion between them. Conversely, after the active valve core 12 switches to the first position, the active magnet 131 moves away from the bias magnet 133, and the magnetic repulsion almost disappears. Therefore, the bias magnet 133 makes the first magnetic holding force greater than the second magnetic holding force. If F 施力部件 When configured to be compatible with P0, the magnetic components arranged in this way make the fluid control valve 100 less sensitive to switching to the second position in response to an increase in pressure than it is sensitive to switching to the first position in response to a decrease in pressure.

[0137] A third arrangement of the magnet components:

[0138] like Figure 3A and Figure 3B As shown, the active magnet 131 and positioning magnet 132 in this arrangement have the same structure, size, and arrangement as the active magnet 131 and positioning magnet 132 in the second arrangement. The difference lies in the arrangement of the bias magnet 133. In this arrangement, the bias magnet 133 is arranged radially outside the positioning magnet 132, and around the radially outside of the magnet unit corresponding to the second position of the active valve core 12. The bias magnet 133 and the positioning magnet 132 have the same polarity and orientation. This effectively increases the magnetic flux density of the magnet unit corresponding to the second position of the active valve core 12. Therefore, the bias magnet 133 makes the force required to overcome the first magnetic holding force and drive the active valve core 12 from the first position to the second position less than the force required to overcome the second magnetic holding force and drive the active valve core 12 from the second position to the first position. Thus, this arrangement of the magnet components makes the first magnetic holding force less than the second magnetic holding force. If F 施力部件 When configured to be compatible with P0, the magnetic components arranged in this way make the fluid control valve 100 more sensitive to switching to the second position in response to an increase in pressure than the fluid control valve 100 is more sensitive to switching to the first position in response to a decrease in pressure.

[0139] Accordingly, it can be understood that if the bias magnet 133 is arranged radially outside the magnet unit corresponding to the first position of the active valve core 12, then the first magnetic holding force is greater than the second magnetic holding force. If F 施力部件 When configured to be compatible with P0, the magnetic components arranged in this way make the fluid control valve 100 less sensitive to switching to the second position in response to an increase in pressure than it is sensitive to switching to the first position in response to a decrease in pressure.

[0140] The fourth arrangement of the magnet components:

[0141] like Figure 4A and Figure 4B As shown, the active magnet 131 and positioning magnet 132 in this arrangement have the same structure, size, and arrangement as the active magnet 131 and positioning magnet 132 in the second and third arrangements. The difference lies in the arrangement of the bias magnet 133. In this arrangement, the bias magnet 133 is placed on the active valve core 12 and located on one side of the axial direction of the first position of the active valve core 12. The bias magnet 133 and the positioning magnet 132 have opposite magnetic poles facing each other, so that after the active valve core 12 switches to the second position, the bias magnet 133 approaches the positioning magnet 132 and forms a magnetic attraction between them. After the active valve core 12 switches to the first position, the bias magnet 133 moves away from the positioning magnet 132 and the magnetic attraction almost disappears. Therefore, the bias magnet 133 makes the first magnetic holding force less than the second magnetic holding force. If F 施力部件 When configured to be compatible with P0, the magnetic components arranged in this way make the fluid control valve 100 more sensitive to switching to the second position in response to an increase in pressure than the fluid control valve 100 is more sensitive to switching to the first position in response to a decrease in pressure.

[0142] Accordingly, it can be understood that by aligning the bias magnet 133 with the active magnet 131, after the active valve core 12 switches to the second position, the bias magnet 133 approaches the positioning magnet 132, forming a magnetic repulsion force between them. However, after the active valve core 12 switches to the first position, the bias magnet 133 moves away from the positioning magnet 132, and the magnetic repulsion force almost disappears. Therefore, the bias magnet 133 makes the first magnetic holding force greater than the second magnetic holding force. If F 施力部件 When configured to be compatible with P0, the magnetic components arranged in this way make the fluid control valve 100 less sensitive to switching to the second position in response to an increase in pressure than it is sensitive to switching to the first position in response to a decrease in pressure.

[0143] The fifth arrangement of the magnet components:

[0144] like Figure 5A and Figure 5BAs shown, the active magnet 131 and positioning magnet 132 in this arrangement are the same in structure, size and arrangement as those in the second arrangement. The difference is in the arrangement of the bias magnet 133. In this arrangement, the bias magnet 133 is arranged on the valve body 11 in an adjustable manner. Specifically, a stud 113 is provided on the valve body 11 on one side of the second position of the active valve core 12 along the axial direction. An adjusting nut 112 is fitted on the stud 113, and the bias magnet 133 is arranged on the adjusting nut 112. Thus, the axial position of the bias magnet 133 can be adjusted by turning the adjusting nut 112, thereby adjusting the relative position between the bias magnet 133 and the active magnet 131. This adjusts the magnetic force between the two, thereby adjusting the magnitude of the second magnetic holding force, and thus adjusting the sensitivity of the fluid control valve 100 in switching to the second position in response to pressure increase.

[0145] The bias magnet 133 can also be arranged in a manner where the magnetic induction intensity is adjustable. For example, by selectively forming magnetic forces with the positioning magnet 132 using a plurality of magnets with different magnetic induction intensities, the first magnetic holding force or the second magnetic holding force can be adjusted.

[0146] The sixth arrangement of the magnet components:

[0147] like Figure 6A and Figure 6B As shown, the magnet component includes an active magnet 131, a positioning magnet 132, and a bias magnet 133. The active magnet 131 is disposed on the active valve core 12, and the positioning magnet 132 is fixedly disposed on the valve body 11. The magnetic pole direction of the active magnet 131 is consistent with the moving direction of the active valve core 12. The positioning magnet 132 is arranged around the active magnet 131. The magnetic pole direction of the active magnet 131 is the same as that of the positioning magnet 132. The opposite magnetic poles of the active magnet 131 and the positioning magnet 132 have the same orientation. The positioning magnet 132 is formed by stacking two magnet units in the length direction. The active magnet 131 includes one magnet unit, and the length of the active magnet 131 is half the length of the positioning magnet 132.

[0148] A bias magnet 133 is disposed on the valve body 11 and located on one side of the second position of the active valve core 12 in the axial direction, opposite to the active magnet 131. Furthermore, the bias magnet 133 and the active magnet 131 have opposite magnetic poles of the same polarity. Figure 6B As shown, after the active valve core 12 switches to the second position, the active magnet 131 approaches the bias magnet 133 and forms a magnetic repulsion force with the bias magnet 133, as... Figure 6AAs shown, after the active valve core 12 switches to the first position, the active magnet 131 moves away from the bias magnet 133, and the magnetic repulsion almost disappears. Therefore, the bias magnet 133 makes the force that overcomes the first magnetic holding force to drive the active valve core 12 from the first position to the second position greater than the force that overcomes the second magnetic holding force to drive the active valve core 12 from the second position to the first position. Thus, this arrangement of the magnet components makes the first magnetic holding force greater than the second magnetic holding force. If F 施力部件 When configured to be compatible with P0, the magnetic components arranged in this way make the fluid control valve 100 less sensitive to switching to the second position in response to an increase in pressure than it is sensitive to switching to the first position in response to a decrease in pressure.

[0149] Accordingly, it can be understood that by aligning the opposite magnetic poles of the bias magnet 133 and the active magnet 131, the sensitivity of the fluid control valve 100 in switching to the second position in response to an increase in pressure is higher than the sensitivity of the fluid control valve 100 in switching to the first position in response to a decrease in pressure.

[0150] The seventh arrangement of the magnet components:

[0151] like Figure 7A and Figure 7B As shown, the magnet component includes an active magnet 131, a positioning magnet 132, and a bias magnet 133. The active magnet 131 is disposed on the active valve core 12, and the positioning magnet 132 is fixedly disposed on the valve body 11. The magnetic pole direction of the active magnet 131 is consistent with the moving direction of the active valve core 12. The positioning magnet 132 is located on one side of the active magnet 131 in the radial direction, and the magnetic pole direction of the positioning magnet 132 is perpendicular to the magnetic pole direction of the active magnet 131. The active magnet 131 is composed of two magnet units stacked in the length direction, and the positioning magnet... Positioning magnet 132 consists of two magnetic units stacked in the thickness direction. The two magnetic units of positioning magnet 132 have opposite magnetic poles facing the same direction. The thickness of positioning magnet 132 is equal to the length of one magnetic unit of active magnet 131. Bias magnet 133 is disposed on valve body 11 and is located at the second position. The magnetic pole direction of bias magnet 133 is perpendicular to the magnetic pole direction of active magnet 131. When active valve core 12 switches to the second position, the opposite magnetic poles of active magnet 131 and positioning magnet 132 approach each other. Thus, as... Figure 6B As shown, after the active valve core 12 switches to the second position, the active magnet 131 approaches the bias magnet 133 and forms a magnetic attraction between them, as... Figure 6AAs shown, after the active valve core 12 switches to the first position, the active magnet 131 moves away from the bias magnet 133 and the magnetic attraction almost disappears. Therefore, the bias magnet 133 makes the force required to overcome the first magnetic holding force to drive the active valve core 12 from the first position to the second position less than the force required to overcome the second magnetic holding force to drive the active valve core 12 from the second position to the first position. Thus, this arrangement of the magnet components makes the first magnetic holding force less than the second magnetic holding force. If F 施力部件 When configured to be compatible with P0, the magnetic components arranged in this way make the fluid control valve 100 more sensitive to switching to the second position in response to an increase in pressure than the fluid control valve 100 is more sensitive to switching to the first position in response to a decrease in pressure.

[0152] Accordingly, it can be understood that by aligning the bias magnet 133 with the same magnetic poles of the active magnet 131, the sensitivity of the fluid control valve 100 to switch to the second position in response to an increase in pressure is lower than the sensitivity of the fluid control valve 100 to switch to the first position in response to a decrease in pressure.

[0153] Among the various arrangements of the magnet components described above, the second, fourth, fifth, sixth, and seventh arrangements are superior to the third arrangement because: in the third arrangement, when attempting to adjust the first magnetic holding force (second magnetic holding force) by adjusting the magnetic field strength of the bias magnet 133 (for example, by adjusting the thickness of the bias magnet 133 to adjust the magnetic field strength of the bias magnet 133), the second magnetic holding force (first magnetic holding force) will also change due to the influence of the bias magnet 133, making it difficult to accurately set the first and second magnetic holding forces, and resulting in a smaller range of adjustment for the two magnetic holding forces.

[0154] In addition to the above-mentioned arrangements, the magnet components can also be arranged in other ways. For example, the positioning magnet 132 can also be arranged to be movable. This invention does not limit the arrangement of the magnet components.

[0155] The force-applying component 30 can be two magnets (not shown) respectively disposed on the active valve core 12 and the valve body 11, and the magnetic force between the two magnets is used to apply force to the active valve core 12; such as Figure 1A and Figure 1BAs shown, the force-applying component 30 can also be a spring, which applies elastic force to the active valve core 12. More preferably, a spring with a very small elastic coefficient is selected as the force-applying component 30, and the initial compression of the spring is maximized. In this way, the spring can not only provide sufficient elastic force, but also the elastic force provided by the spring does not change much when the active valve core 12 switches between the first position and the second position. In some more preferred structures, a floating cavity 232 is provided at the end of the valve core, and a floating head is formed at the tail of the pressure-bearing drive component. For example, a floating head 231 is formed at the tail of the contact 23. The floating head 231 is engaged in the floating cavity 232 so that the trigger can float axially relative to the active valve core 12. In this way, when the active valve core 12 switches between the first position and the second position, the compression or reset of the spring is less than the travel of the active valve core 12. That is, the compression or reset of the spring is small. Combined with the small elastic coefficient of the spring, the change in the elastic force of the spring is further reduced, so that the spring applies a more constant elastic force to the contact 23. In addition, the spring force can be set according to the requirements of P0 mentioned above.

[0156] The controlled institutions 40 include various types, such as... Figure 5A and Figure 5B As shown, the controlled mechanism 40 is an electromagnetic controlled mechanism. For example, an electromagnetic sensor 45 is selected as the electromagnetic controlled mechanism. When the active valve core 12 switches between the first position and the second position, the electromagnetic sensor 45 directly or indirectly responds to the change in magnetic field caused by the change in the position of the active valve core 12 and sends an electrical signal. The valve component in the fluid system receives the electrical signal and acts to control the opening and closing of the pipeline, the flow rate of the fluid in the pipeline, etc.

[0157] The controlled mechanism 40 can also be a fluid controlled mechanism. Specifically, the fluid controlled mechanism 40 includes: a passive valve chamber 42, a passive valve core 43, a passive magnet 44, and a controlled port. The passive valve chamber 42 is disposed in the valve body 11. The passive valve core 43 is disposed in the passive valve chamber 42 and can move along the passive valve chamber 42. The passive magnet 44 is disposed in the passive valve core 43. The passive valve core 43 is driven by the active valve core 12 through magnetic force. The controlled port is disposed at the axial end of the passive valve chamber 42. The controlled port includes a first port 411 and a second port 412, such as... Figure 10As shown, the valve component is a diaphragm valve 200 with a diaphragm 201 and a accumulator port 202. The first port 411 and the second port 412 are respectively connected to the pipeline in the fluid system and the accumulator port 202 of the diaphragm valve 200. Thus, when the active valve core 12 switches between the first position and the second position, the passive valve core 43 closes or opens the first port 411 and the second port 412. When both ports are open, the accumulator port 202 of the diaphragm valve 200 releases pressure, thereby causing the diaphragm valve 200 to open the pipeline. When both ports are closed, the accumulator port 202 stores pressure, thereby causing the diaphragm valve 200 to disconnect the pipeline.

[0158] The controlled mechanism 40 may also have both an electromagnetic controlled mechanism and a fluid controlled mechanism. Thus, when the active valve core 12 switches positions, the controlled mechanism 40 sends electrical signals and fluid signals to the electrically controlled valve (e.g., a solenoid switch valve) and the hydraulically controlled valve (e.g., a diaphragm valve), respectively. Furthermore, the electromagnetic sensor 45, which is the electromagnetic controlled mechanism, can directly respond to the change in magnetic field caused by the change in position of the active valve core 12 and send an electrical signal, and can also directly respond to the change in magnetic field caused by the change in position of the passive valve core 12 and send an electrical signal.

[0159] It should be noted that, among the various arrangements of the magnet components described above, the magnetic field interference experienced by the passive magnet 44 on the bias magnet 133 in the second, fourth, sixth, and seventh arrangements is significantly lower than that experienced by the passive magnet 44 on the bias magnet 133 in the third arrangement.

[0160] The following example, using the fluid control valve 100 in a water storage and extraction system, illustrates the function and advantages of the fluid control valve 100.

[0161] like Figure 10 As shown, the water storage and retrieval system includes: a water tank 300, a water supply pipeline 400, a diaphragm valve 200 (a type of on / off valve), and a fluid control valve 100 provided by the present invention; the water supply pipeline 400 is connected to the bottom of the water tank 300 for filling the water tank 300 with water, the diaphragm valve 200 is installed on the water supply pipeline 400, the pressure sampling port 21 of the fluid control valve 100 is connected to the bottom of the water tank 300 for sampling the water pressure inside the water tank 300, and the second port 412 of the fluid control valve 100 is connected to the pressure storage port of the diaphragm valve 200. When port 202 is connected, and the first port 411 is connected to the bottom of the water supply pipe 400 or the water tank 300, the pressure accumulator 202 can release pressure when the first port 411 and the second port 412 are connected, the diaphragm 201 of the diaphragm valve 200 moves down and opens the diaphragm valve 200, and the water supply pipe 400 injects water into the water tank 300. When the first port 411 and the second port 412 are closed, the pressure accumulator 202 stores pressure, the diaphragm 201 moves up and closes the diaphragm valve 200, and the water supply pipe 400 stops injecting water into the water tank 300.

[0162] It is easy to understand that the water level in the water tank 300 is linearly proportional to the fluid pressure at the pressure sampling port 21 of the fluid control valve 100. That is, as the water level drops, the pressure at the pressure sampling port 21 decreases, until the water level drops to a value of F. 流体2 After that, the active valve core 12 switches from the second position to the first position, and the passive valve core 43 opens the first port 411 and the second port 412, making the first port 411 and the second port 412 connected. The pressure accumulator port 202 of the diaphragm valve 200 is depressurized, the diaphragm valve 200 is opened, and the water supply pipeline 400 fills the water tank 300, causing the liquid level in the water tank 300 to rise.

[0163] The rise in the liquid level in water tank 300 causes the fluid pressure at pressure sampling port 21 to increase to F. 流体1 After the above, the active valve core 12 switches from the second position to the first position, and the passive valve core 43 closes the first port 411 and the second port 412. With the first port 411 and the second port 412 closed, the accumulator port 202 of the diaphragm valve 200 accumulates pressure, the diaphragm valve 200 closes, and the water supply pipeline 400 stops injecting water into the water tank 300.

[0164] As can be seen from the above, F 流体2 The lower liquid level of the 300 water tank is determined by F. 流体1 The upper liquid level of water tank 300 is determined by F. 流体1 =P 流体1 S = F 施力部件 +F 磁1 By adjusting F 磁1 The value can adjust the upper liquid level of water tank 300. Specifically, by increasing F... 磁1 The value can be adjusted to raise the upper liquid level of water tank 300 by decreasing F. 磁1 The value can be adjusted to lower the upper liquid level of water tank 300; due to F 流体2 =P 流体2 S = F 施力部件 -F 磁2 By adjusting F 磁2 The value can adjust the lower liquid level of water tank 300. Specifically, by increasing F... 磁2 The value can be adjusted to lower the upper liquid level of water tank 300 by reducing F. 磁2 The value can be adjusted to raise the lower liquid level of the 300 water tank.

[0165] Due to F 流体1 -F 流体2 =(P 流体1 -P 流体2 S = F 磁1 +F 磁2 By increasing F 磁1 With F 磁2The sum of these can increase the difference between the upper and lower liquid levels, thereby increasing the single injection volume, by reducing F. 磁1 With F 磁2 The sum of these values ​​can reduce the difference between the upper and lower liquid levels, thereby reducing the amount of water injected in a single operation.

[0166] Furthermore, although exemplary embodiments have been described in this invention, their scope includes any and all embodiments based on the invention that have equivalent elements, modifications, omissions, combinations (e.g., schemes involving intersections of various embodiments), adaptations, or alterations. Elements in the claims will be interpreted broadly based on the language used in the claims and are not limited to the examples described in this specification or during the implementation of this application, and such examples will be interpreted as non-exclusive. Therefore, this specification and examples are intended to be considered illustrative only, and the true scope and spirit are indicated by the full scope of the following claims and their equivalents.

[0167] The above description is intended to be illustrative and not restrictive. For example, the above examples (or one or more of them) can be used in combination with each other. Other embodiments can be used by those skilled in the art when reading the above description. Furthermore, in the above detailed description, various features may be grouped together to simplify the invention. This should not be construed as an intention that a disclosed feature, which is not claimed, is necessary for any claim. Rather, the subject matter of the invention may be less than all the features of the particular disclosed embodiments. Thus, the following claims are incorporated herein by reference as examples or embodiments, wherein each claim is independently considered as a separate embodiment, and these embodiments are contemplated as being able to be combined with each other in various combinations or arrangements. The scope of the invention should be determined by reference to the appended claims and the full scope of their equivalents.

[0168] The above embodiments are merely exemplary embodiments of the present invention and are not intended to limit the present invention. The scope of protection of the present invention is defined by the claims. Those skilled in the art can make various modifications or equivalent substitutions to the present invention within its spirit and scope of protection, and such modifications or equivalent substitutions should also be considered to fall within the scope of protection of the present invention.

Claims

1. A fluid control valve, characterized in that, This includes the valve core mechanism, the triggering mechanism, and the controlled mechanism; The valve core mechanism includes: The valve body contains an active valve chamber. An active valve core is disposed in the active valve chamber and is movable along the active valve chamber, such that the active valve core has a first position and a second position located at both ends of the moving stroke; A magnet component for applying a magnetic force to the active valve core; A force-applying component, disposed in the valve body, for applying force to the active valve core; The triggering mechanism includes: a pressure acquisition port and a pressure-bearing driving component disposed at the pressure acquisition port; The controlled mechanism responds to the action of the active valve core by sending a control signal to control the action of the valve components in the fluid system; wherein: After the active valve core switches to the first position, the magnetic force exerted by the magnet component on the active valve core constitutes a first magnetic holding force for holding the active valve core in the first position; after the active valve core switches to the second position, the magnetic force exerted by the magnet component on the active valve core constitutes a second magnetic holding force for holding the active valve core in the second position. The direction of the pressure exerted by the fluid at the pressure acquisition port on the pressure-bearing drive component is opposite to the direction of the force exerted by the force-applying component on the active valve core.

2. The fluid control valve according to claim 1, characterized in that, The magnet component includes an active magnet and a positioning magnet. The active magnet is disposed in the active valve core, and the positioning magnet is disposed in the valve body and adjacent to the active magnet. The magnetic force between the active magnet and the positioning magnet constitutes a first magnetic holding force for holding the active valve core in a first position and a second magnetic holding force for holding the active valve core in a second position.

3. The fluid control valve according to claim 2, characterized in that, The fluid control valve also includes a bias magnet; The magnetic forces between the active magnet, the positioning magnet, and the bias magnet constitute a first magnetic holding force for holding the active valve core in a first position and a second magnetic holding force for holding the active valve core in a second position. The bias magnet causes the first magnetic holding force to be greater than or less than the second magnetic holding force.

4. The fluid control valve according to claim 1, characterized in that, The force-applying component is a spring; the spring is sleeved on the active valve core and located between the pressure-bearing drive component and the valve body to apply elastic force to the pressure-bearing drive component.

5. The fluid control valve according to claim 2, characterized in that, The pressure-bearing drive component is floatingly connected to the active valve core and has a preset floating stroke relative to the active valve core, so that when the active valve core switches between the first position and the second position, the compression or reset amount of the spring is less than the movement stroke of the active valve core.

6. The fluid control valve according to claim 3, characterized in that, The bias magnet is disposed on the valve body, and the bias magnet forms a magnetic force with the active magnet, so that the first magnetic holding force is greater than or less than the second magnetic holding force. or, The bias magnet is disposed on the active valve core, and the bias magnet forms a magnetic force with the positioning magnet, so that the first magnetic holding force is greater than or less than the second magnetic holding force.

7. The fluid control valve according to claim 6, characterized in that, The bias magnet is disposed on the valve body and located on one side of the second position of the active valve core in the axial direction and opposite to the active magnet. After the active valve core is switched to the second position, a magnetic attraction is formed between the bias magnet and the active magnet, so that the second magnetic holding force is greater than the first magnetic holding force. or, The bias magnet is disposed on the valve body and located on one side of the second position of the active valve core in the axial direction and opposite to the active magnet. After the active valve core is switched to the second position, a magnetic repulsion force is formed between the bias magnet and the active magnet, so that the first magnetic holding force is greater than the second magnetic holding force.

8. The fluid control valve according to claim 6, characterized in that, The bias magnet is disposed on the valve body and located on one side of the radial direction of the second position of the active valve core. After the active valve core is switched to the second position, a magnetic attraction is formed between the bias magnet and the active magnet, so that the second magnetic holding force is greater than the first magnetic holding force. or, The bias magnet is disposed on the valve body and located on one side of the radial direction of the first position of the active valve core. After the active valve core is switched to the first position, a magnetic attraction is formed between the bias magnet and the active magnet, so that the first magnetic holding force is greater than the second magnetic holding force.

9. The fluid control valve according to claim 8, characterized in that, The bias magnet is adjacent to the positioning magnet.

10. The fluid control valve according to claim 8, characterized in that, The bias magnet and the positioning magnet are axially separated.

11. The fluid control valve according to claim 6, characterized in that, The bias magnet is disposed on the active valve core and located on one side of the active valve core in the first position. After the active valve core is switched to the second position, a magnetic attraction is formed between the bias magnet and the positioning magnet, so that the second magnetic holding force is greater than the first magnetic holding force. or, The bias magnet is disposed on the active valve core and located on one side of the active valve core in the first position. After the active valve core is switched to the second position, a magnetic repulsion force is formed between the bias magnet and the positioning magnet, so that the first magnetic holding force is greater than the second magnetic holding force.

12. The fluid control valve according to claim 3, characterized in that, The bias magnet is configured to be position-adjustable or magnetic intensity-adjustable to adjust the magnetic force between the bias magnet and the positioning magnet or the active magnet.

13. The fluid control valve according to claim 1, characterized in that, The controlled mechanism includes a fluid controlled mechanism and / or an electromagnetic controlled mechanism.

14. The fluid control valve according to claim 13, characterized in that, The fluid control mechanism includes: A passive valve chamber, which is disposed within the valve body; A passive valve core, which is disposed in the passive valve cavity and is movable along the passive valve cavity; A passive magnet is disposed in the passive valve core; A controlled port is disposed at the axial end of the passive valve chamber, and the controlled port is in communication with the hydraulic control port of the valve component of the fluid system; wherein: The passive valve core is driven by the active valve core through magnetic force, so that when the active valve core switches between a first position and a second position, the passive valve core moves along the passive valve cavity to close and open the controlled port, thereby controlling the flow of fluid through the controlled port and sending a fluid signal to the valve component.

15. The fluid control valve according to claim 13, characterized in that, The electromagnetic control mechanism is an electromagnetic sensor, which directly or indirectly responds to the change in magnetic field caused by the change in the position of the active valve core and sends an electrical signal.

16. The fluid control valve according to claim 2, characterized in that, The magnetic pole direction of the active magnet is consistent with the moving direction of the active valve core; The magnetic pole direction of the positioning magnet is consistent with the magnetic pole direction of the active magnet; or, The magnetic pole direction of the positioning magnet is perpendicular to the magnetic pole direction of the active magnet.

17. The fluid control valve according to claim 2, characterized in that, The active magnet is located radially inside the positioning magnet; or, The active magnet is located radially outside the positioning magnet.

18. The fluid control valve according to claim 1, characterized in that, The pressure-bearing drive component includes a flexible diaphragm disposed at the pressure acquisition port and a contact connected to the active valve core and driven by the flexible diaphragm through contact with the flexible diaphragm; or, The pressure-bearing drive component is a piston located at the pressure acquisition port and connected to the active valve core.

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