Electromagnetic magnetically controlled one-way valve

Abstract

This utility model discloses an electromagnetically controlled one-way valve, including a one-way valve housing, a movable valve core, and an electromagnet. The one-way valve housing has an upper through hole and a lower through hole, one of which is a sealing hole. The movable valve core is disposed in the housing cavity of the one-way valve housing, and the electromagnet is fixed on the one-way valve housing. The movable valve core has an inner permanent magnet and a sealing contour surface. The electromagnet generates a magnetic field with variable polarity by changing the direction of the input current. This magnetic field repels or attracts the inner permanent magnet, driving the movable valve core to move in the one-way valve housing so that the sealing contour surface seals or opens the sealing hole. This utility model has the advantages of simple structure, high stability, long service life, applicability to highly corrosive fluids, and adaptability to zero pressure difference or low pressure conditions.

Description

Technical Field

[0001] This utility model relates to the field of one-way valve technology, specifically an electromagnetically controlled one-way valve. Background Technology

[0002] To ensure unidirectional fluid flow and prevent reverse flow, a check valve structure is generally used. Existing check valve structures include a valve seat, a valve core, and a spring. The valve core presses against the valve seat (sealing surface) through the spring, closing the fluid passage. When the fluid inlet pressure exceeds the spring force, the valve core is pushed open, allowing fluid flow. When the pressure difference disappears or reverses, the spring pushes the valve core back to its original position, achieving reverse sealing.

[0003] However, this type of check valve has the following shortcomings: First, it cannot be used with highly corrosive liquids, as the spring is prone to corrosion, leading to valve failure; second, the consistency of springs produced in batches cannot be guaranteed, resulting in problems such as fluctuations in opening pressure and unstable flow control; third, the spring is prone to deformation or wear after long-term use, leading to check valve failure or changes in working pressure; fourth, it cannot adapt to zero pressure differential and low-pressure conditions. At zero pressure differential, the fluid pressure cannot overcome the weight of the valve core, and the valve core cannot open. At low pressure, if the fluid pressure is insufficient to counteract the weight of the valve core, the valve core still cannot open.

[0004] Existing check valves, designed for use with highly corrosive liquids, have removed the spring structure and rely solely on the weight of the valve core to press against the valve seat (sealing surface) for sealing. These check valves have high installation requirements; the valve core must be vertically downwards and pressed against the valve seat by gravity. Furthermore, at zero pressure differential, the fluid pressure cannot overcome the weight of the valve core, preventing it from opening. Even under low-pressure conditions, if the fluid pressure is insufficient to counteract the weight of the valve core, it still cannot open. Utility Model Content

[0005] The purpose of this invention is to overcome the shortcomings of the prior art and provide an electromagnetically controlled check valve that is simple in structure, highly stable, has a long service life, is suitable for highly corrosive fluid applications, and can adapt to zero differential pressure or low-pressure conditions.

[0006] The technical solution adopted by this utility model to solve its technical problem is: An electromagnetically controlled one-way valve is characterized in that it includes a one-way valve housing, a movable valve core, and an electromagnet. The one-way valve housing is provided with an upper through hole and a lower through hole, one of which is a sealing hole. The movable valve core is disposed in the housing cavity of the one-way valve housing, and the electromagnet is fixed on the one-way valve housing. The movable valve core is equipped with an inner permanent magnet and a sealing profile surface; The electromagnet changes the direction of the input current to generate a magnetic field with variable polarity. This magnetic field repels or attracts the inner permanent magnet, driving the movable valve core to move in the one-way valve housing so that the sealing profile faces the sealing hole to seal or open the sealing hole. With a simple structure that eliminates the need for springs, it is suitable for highly corrosive fluid applications. It boasts high structural stability and allows for valve opening and closing by switching the direction of the current. It has a short response time, and valve opening no longer depends on fluid pressure difference, making it suitable for zero pressure difference or low-pressure conditions.

[0007] The electromagnet of this utility model is located at the end away from the sealing hole. The direction of the first current input to the electromagnet generates a magnetic repulsion force with the inner permanent magnet, driving the movable valve core to move towards the sealing hole so that the sealing contour faces the sealing hole and seals it. The electromagnet inputs a second current in the direction that generates a magnetic attraction force with the inner permanent magnet, driving the movable valve core to move away from the sealing hole and open the sealing hole.

[0008] The electromagnet of this utility model is located at one end near the sealing hole. The direction of the first current input to the electromagnet generates a magnetic repulsion force with the inner permanent magnet, which drives the movable valve core to move away from the sealing hole to open the sealing hole. The electromagnet inputs a second current in the direction that generates a magnetic attraction force with the inner permanent magnet, driving the movable valve core to move towards the sealing hole so that the sealing contour faces the sealing hole and seals it.

[0009] The present invention provides two electromagnets, one of which is located away from the sealing hole and the other is located close to the sealing hole. The electromagnet located away from the sealing hole generates a magnetic repulsion force with the inner permanent magnet in the direction of the first current input, and the electromagnet located close to the sealing hole generates a magnetic attraction force with the inner permanent magnet in the direction of the second current input, thereby driving the movable valve core to move towards the sealing hole so that the sealing contour faces the sealing hole for sealing. An electromagnet located away from the sealing hole receives a second current and generates a magnetic attraction force with the inner permanent magnet, while an electromagnet located near the sealing hole receives a first current and generates a magnetic repulsion force with the inner permanent magnet, driving the movable valve core to move away from the sealing hole to open it.

[0010] The outer diameter of the movable valve core in this invention is matched with the inner diameter of the one-way valve housing to ensure the stability of the axial movement of the movable valve core within the one-way valve housing.

[0011] The movable valve core of this utility model includes a valve core housing, the valve core housing has an inner cavity, and the valve core housing extends outward from one end near the sealing hole to form a sealing profile surface that cooperates with the sealing hole. The internal permanent magnet is located inside the valve core housing.

[0012] The inner permanent magnet of this invention extends outward from one end near the sealing profile surface to form a shape that matches the sealing profile surface; thus, a permanent magnet is also provided on the sealing profile surface of the valve core housing, further enhancing the magnetic force.

[0013] The present invention provides a sealing ring at the sealing hole position, and the sealing contour surface of the movable valve core is sealed and fitted with the sealing ring.

[0014] The one-way valve housing of this utility model has a stepped limiting surface at the sealing hole position, and one end of the sealing ring extends outward to form a limiting boss, which abuts against the stepped limiting surface; this facilitates the installation and positioning of the sealing ring.

[0015] The one-way valve housing of this utility model has an upper connecting section connected at the upper through hole and a lower connecting section connected at the lower through hole; The upper connecting section is provided with an upper inner through hole and an upper external thread, the upper inner through hole being connected to the upper through hole; the lower connecting section is provided with a lower inner through hole and a lower external thread, the lower inner through hole being connected to the lower through hole; the upper and lower connecting sections facilitate the connection of the one-way valve to equipment and pipelines.

[0016] The advantages of this utility model are: simple structure, no need for spring structure, applicable to highly corrosive fluids, high structural stability, valve opening and closing state can be switched by switching current direction, short response time, valve opening no longer depends on fluid pressure difference, and can adapt to zero pressure difference or low pressure conditions. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of the electromagnetic magnetic control one-way valve in Example 1.

[0018] Figure 2 This is the front view of the electromagnetic magnetic control check valve in Example 1.

[0019] Figure 3 yes Figure 2 Sectional view of AA (sealed condition).

[0020] Figure 4 This is a cross-sectional view of the electromagnetically controlled one-way valve in the sealing state in Example 2.

[0021] Figure 5 This is a cross-sectional view of the electromagnetically controlled one-way valve in the sealing state in Example 3.

[0022] Attached diagram labels: Upper coil-101, Upper iron core-102; Lower coil-201, lower iron core-202; One-way valve housing-3, upper housing-301, upper connecting section-3011, upper inner through hole-30111, upper external thread-30112, lower housing-302, lower connecting section-3021, lower inner through hole-30211, lower external thread-30212, stepped limiting surface-3022, limiting ring-3023, housing cavity-303; Sealing ring-4, limiting boss-401; Valve core housing - 501, sealing profile surface - 5011, inner permanent magnet N pole - 5021, inner permanent magnet S pole - 5022. Detailed Implementation

[0023] The present invention will now be described in conjunction with the accompanying drawings and embodiments.

[0024] Example 1: As attached Figure 1-3 As shown, an electromagnetically controlled one-way valve includes a one-way valve housing 3, a movable valve core, and an electromagnet. The one-way valve housing 3 is provided with an upper through hole and a lower through hole, one of which is a sealing hole. The movable valve core is disposed in the housing cavity of the one-way valve housing 3, and the electromagnet is fixed on the one-way valve housing 3. The movable valve core is provided with an inner permanent magnet and a sealing profile surface 5011; The electromagnet changes the direction of the input current to generate a magnetic field with variable polarity. This magnetic field repels or attracts the inner permanent magnet, driving the movable valve core to move in the one-way valve housing 3 so that the sealing profile surface 5011 seals or opens the sealing hole. With a simple structure that eliminates the need for springs, it is suitable for highly corrosive fluid applications. It boasts high structural stability and allows for valve opening and closing by switching the direction of the current. It has a short response time, and valve opening no longer depends on fluid pressure difference, making it suitable for zero pressure difference or low-pressure conditions.

[0025] In this embodiment, the lower through hole is set as a sealing hole, and the sealing profile surface 5011 of the movable valve core is located at the lower end of the movable valve core. The movable valve core moves downward to achieve the sealing of the sealing hole by the sealing profile surface 5011. Alternatively, the upper through hole can be set as a sealing hole as needed. In this case, the sealing profile surface 5011 of the movable valve core is set at the upper end of the movable valve core, and the movable valve core moves upward to achieve the sealing of the sealing hole by the sealing profile surface 5011.

[0026] In this embodiment, two electromagnets are provided. One of them is located away from the sealing hole. In this embodiment, it is the upper electromagnet, which includes an upper coil 101 and an upper iron core 102. The other is located near the sealing hole. In this embodiment, it is the lower electromagnet, which includes a lower coil 201 and a lower iron core 202. The electromagnet located away from the sealing hole generates a magnetic repulsion force with the inner permanent magnet when the first current is input. The electromagnet located near the sealing hole generates a magnetic attraction force with the inner permanent magnet when the second current is input. This drives the movable valve core to move towards the sealing hole so that the sealing profile 5011 seals the sealing hole. An electromagnet located away from the sealing hole receives a second current and generates a magnetic attraction force with the inner permanent magnet, while an electromagnet located near the sealing hole receives a first current and generates a magnetic repulsion force with the inner permanent magnet, driving the movable valve core to move away from the sealing hole to open it.

[0027] In this embodiment, the upper iron core 102 and the lower iron core 202 can be fixed to the one-way valve housing 3 by means of adhesive, welding or screws. The upper coil 101 can be wound on the upper iron core 102 or fixed on the outside of the upper iron core 102, and the lower coil 201 can be wound on the lower iron core 202 or fixed on the outside of the lower iron core 202.

[0028] In this embodiment, the upper side of the inner permanent magnet can be set as the S pole 5022, and the lower side as the N pole 5021, as shown in the attached figure. Figure 3 The diagram shows the sealed state. When the upper coil 101 receives the first current direction, the upper side of the upper iron core 102 is the N pole and the lower side is the S pole. The magnetic polarity of the lower side of the upper iron core 102 is the same as that of the upper side of the inner permanent magnet, generating a magnetic repulsion force. When the lower coil 201 receives the second current direction, the upper side of the lower iron core 202 is the S pole and the lower side is the N pole. The magnetic polarity of the upper side of the lower iron core 202 is opposite to that of the lower side of the inner permanent magnet, generating a magnetic attraction force. The magnetic repulsion force between the upper electromagnet and the inner permanent magnet, as well as the magnetic attraction force between the lower electromagnet and the inner permanent magnet, enable the movable valve core to move downwards and seal the sealing hole. When the upper coil 101 receives the second current direction, the polarity of the upper iron core changes, with the upper side of the upper iron core 102 becoming the S pole and the lower side becoming the N pole. The magnetic polarity of the lower side of the upper iron core 102 is opposite to that of the upper side of the inner permanent magnet, generating a magnetic attraction force. When the lower coil 201 receives the first current direction, the polarity of the lower iron core changes, with the upper side of the lower iron core 202 becoming the N pole and the lower side becoming the S pole. The magnetic polarity of the upper side of the lower iron core 202 is the same as that of the lower side of the inner permanent magnet, generating a magnetic repulsion force. Through the magnetic attraction force between the upper iron core and the inner permanent magnet, and the magnetic repulsion force between the lower iron core and the inner permanent magnet, the movable valve core moves upward to open the sealing hole.

[0029] Alternatively, the upper side of the inner permanent magnet can be set as the N pole 5021, and the lower side as the S pole 5022. When the upper coil 101 is input with the first current direction, the upper iron core 102 is S pole on the upper side and N pole on the lower side. The magnetic polarity of the lower side of the upper iron core 102 is the same as that of the upper side of the inner permanent magnet, generating a magnetic repulsion force. When the lower coil 201 is input with the second current direction, the lower iron core 202 is N pole on the upper side and S pole on the lower side. The magnetic polarity of the upper side of the lower iron core 202 is opposite to that of the lower side of the inner permanent magnet, generating a magnetic attraction force. The magnetic repulsion force between the upper iron core and the inner permanent magnet, as well as the magnetic attraction force between the lower iron core and the inner permanent magnet, enable the movable valve core to move downward and seal the sealing hole. When the upper coil 101 receives a second current, the magnetic polarity of the upper iron core 102 is changed. At this time, the upper side of the upper iron core 102 is the N pole and the lower side is the S pole. The magnetic polarity of the lower side of the upper iron core 102 is opposite to that of the upper side of the inner permanent magnet, generating a magnetic attraction force. When the lower coil 201 receives a first current, the magnetic polarity of the lower iron core 202 is changed. The upper side of the lower iron core 202 is the S pole and the lower side is the N pole. The magnetic polarity of the upper side of the lower iron core 202 is the same as that of the lower side of the inner permanent magnet, generating a magnetic repulsion force. Through the magnetic attraction force between the upper iron core and the inner permanent magnet, and the magnetic repulsion force between the lower iron core and the inner permanent magnet, the movable valve core moves upward to open the sealing hole.

[0030] In this embodiment, the specific direction of current input is only indicated by the first current direction and the second current direction. For example, in this embodiment, the upper side of the inner permanent magnet is set as the S pole 5022 of the inner permanent magnet, and the lower side is set as the N pole 5021 of the inner permanent magnet. The first current direction described here can represent the positive direction, and the second current direction can represent the negative direction. Similarly, the upper side of the inner permanent magnet is set as the N pole 5021 of the inner permanent magnet, and the lower side is set as the S pole 5022 of the inner permanent magnet. The first current direction described here can represent the negative direction, and the second current direction can represent the positive direction.

[0031] The outer diameter of the movable valve core matches the inner diameter of the one-way valve housing 3 to ensure the stability of the axial movement of the movable valve core within the one-way valve housing 3.

[0032] This embodiment is as shown in the appendix. Figure 3 As shown, a number of reinforcing ribs are fixed on the inner wall of the one-way valve housing 3 at intervals along the circumference of the one-way valve housing 3, and the outer diameter of the movable valve core matches the inner diameter formed by the reinforcing ribs.

[0033] The movable valve core includes a valve core housing 501, the valve core housing 501 has an inner cavity, and the end of the valve core housing 501 near the sealing hole extends outward to form a sealing profile surface 5011 that cooperates with the sealing hole. The internal permanent magnet is located inside the valve core housing 501.

[0034] The inner permanent magnet extends outward from one end near the sealing profile surface 5011 to form a shape that matches the sealing profile surface 5011; thus, a permanent magnet is also provided at the sealing profile surface 5011 of the valve core housing 501, further strengthening the magnetic force.

[0035] In this embodiment, the sealing profile surface 5011 is hemispherical, but other shapes such as cones can also be used as needed, as long as they can achieve the sealing of the sealing hole.

[0036] In this embodiment, the one-way valve housing 3 includes a split upper housing 301 and a lower housing 302. The upper housing 301 and the lower housing 302 are fastened together to form a housing cavity 303. The upper housing 301 has an upper through hole at the top and an upper connecting section 3011 is connected to the upper through hole. The lower housing 302 has a lower through hole at the bottom and a lower connecting section 3021 is connected to the lower through hole. The upper connecting section 3011 is provided with an upper inner through hole 30111 and an upper external thread 30112, the upper inner through hole 30111 being connected to the upper through hole; the lower connecting section 3021 is provided with a lower inner through hole 30211 and a lower external thread 30212, the lower inner through hole 30211 being connected to the lower through hole; the upper connecting section 3011 and the lower connecting section 3021 facilitate the connection of the one-way valve to equipment and pipelines.

[0037] In this embodiment, a limiting ring 3023 is formed on the lower housing 302 near the outer periphery, extending upward in the circumferential direction. An upper housing limiting surface is formed on the lower housing 302 outside the limiting ring 3023. The upper housing 301 is fastened to the lower housing 302, with the inner wall of the upper housing 301 abutting against the outer wall of the limiting ring 3023 and the lower end face of the upper housing 301 abutting against the upper housing limiting surface, thus achieving the positioning of the upper housing 301.

[0038] The upper housing 301 and the lower housing 302 can be further fixed by bolts or welding. The upper housing 301 and the lower housing 302 are set separately to facilitate the installation of the movable valve core; or the one-way valve housing 3 can be integrally formed as needed.

[0039] A sealing ring 4 is provided at the sealing hole position, and the sealing contour surface 5011 of the movable valve core is sealed and fitted with the sealing ring 4. In this embodiment, the sealing ring 4 adopts a sleeve-shaped structure, and one end of the sealing ring 4 extends outward to form a limiting boss 401. The one-way valve housing 3 is provided with a stepped limiting surface 3022 at the lower through hole position or the upper through hole position. In this embodiment, the lower through hole is set as a sealing hole, and the stepped limiting surface 3022 is set at the lower through hole position, formed between the bottom end face of the lower housing 302 and the lower inner through hole 30211 of the lower connecting section 3021. The sealing ring 4 extends into the lower inner through hole 30211, and the limiting boss 401 abuts against the stepped limiting surface 3022. This facilitates the installation and positioning of the sealing ring 4.

[0040] In use, this invention achieves the opening and sealing of the one-way valve by switching the current direction. When the upper coil 101 is input with a first current direction and the lower coil 201 is input with a second current direction, the magnetic polarity of the lower side of the upper iron core 102 is the same as the magnetic polarity of the upper side of the inner permanent magnet, generating a magnetic repulsion force; the magnetic polarity of the upper side of the lower iron core 202 is opposite to the magnetic polarity of the lower side of the inner permanent magnet, generating a magnetic attraction force; the magnetic repulsion force between the upper electromagnet and the inner permanent magnet, and the magnetic attraction force between the lower electromagnet and the inner permanent magnet, cause the movable valve core to move downward to seal the sealing hole and block the fluid. When the upper coil 101 receives the second current direction and the lower coil 201 receives the first current direction, the polarities of the upper and lower iron cores change. The magnetic pole polarity on the lower side of the upper iron core 102 is opposite to that on the upper side of the inner permanent magnet, generating a magnetic attraction force. The magnetic pole polarity on the upper side of the lower iron core 202 is the same as that on the lower side of the inner permanent magnet, generating a magnetic repulsion force. Through the magnetic attraction force between the upper iron core and the inner permanent magnet, and the magnetic repulsion force between the lower iron core and the inner permanent magnet, the movable valve core moves upward to open the sealing hole, allowing fluid to enter the housing cavity 303 from the lower inner through hole 30211 and flow out from the upper inner through hole 30111.

[0041] Example 2: The difference between Example 2 and Example 1 lies in the number of electromagnets arranged. The similarities will not be described in detail here. In this example, the electromagnet is located at the end away from the sealing hole. The direction of the first current input to the electromagnet generates a magnetic repulsion force with the inner permanent magnet, which drives the movable valve core to move towards the sealing hole so that the sealing contour faces the sealing hole and seals it. The electromagnet inputs a second current in the direction that generates a magnetic attraction force with the inner permanent magnet, driving the movable valve core to move away from the sealing hole and open the sealing hole.

[0042] In this embodiment, the upper side of the inner permanent magnet can be set as the S pole 5022, and the lower side as the N pole 5021, as shown in the attached figure. Figure 4 As shown, when the upper coil 101 is input with the first current direction, the upper side of the upper iron core 102 is the N pole and the lower side is the S pole. The magnetic polarity of the lower side of the upper iron core 102 is the same as the magnetic polarity of the upper side of the inner permanent magnet, generating magnetic repulsion. The magnetic repulsion between the upper electromagnet and the inner permanent magnet enables the movable valve core to move downward to seal the sealing hole. When the second current direction is input into the upper coil 101, the polarity of the upper iron core is changed. The upper side of the upper iron core 102 is the S pole and the lower side is the N pole. The magnetic polarity of the lower side of the upper iron core 102 is opposite to that of the upper side of the inner permanent magnet, generating a magnetic attraction force. The magnetic attraction force between the upper iron core and the inner permanent magnet enables the movable valve core to move upward and open the sealing hole.

[0043] Alternatively, the upper side of the inner permanent magnet can be set as the N pole 5021, and the lower side as the S pole 5022. When the upper coil 101 is input with a first current direction (the specific current input direction is determined according to the magnetic polarity of the inner permanent magnet; here, only the first and second current directions are used for illustration), the upper iron core 102 has an S pole on the upper side and an N pole on the lower side. The magnetic polarity of the lower side of the upper iron core 102 is the same as that of the upper side of the inner permanent magnet, generating a magnetic repulsion force. When the lower coil 201 is input with a second current direction, the lower iron core 202 has an N pole on the upper side and an S pole on the lower side. The magnetic polarity of the upper side of the lower iron core 202 is opposite to that of the lower side of the inner permanent magnet, generating a magnetic attraction force. Through the magnetic repulsion force between the upper iron core and the inner permanent magnet, and the magnetic attraction force between the lower iron core and the inner permanent magnet, the movable valve core moves downward to seal the sealing hole. When the second current direction is input into the upper coil 101, the magnetic polarity of the upper iron core 102 is changed. At this time, the upper side of the upper iron core 102 is the N pole and the lower side is the S pole. The magnetic polarity of the lower side of the upper iron core 102 is opposite to the magnetic polarity of the upper side of the inner permanent magnet, generating a magnetic attraction force. Through the magnetic attraction force between the upper iron core and the inner permanent magnet, and the magnetic repulsion force between the lower iron core and the inner permanent magnet, the movable valve core moves upward to open the sealing hole.

[0044] When this utility model is in use, the one-way valve is opened and sealed by switching the current direction. When the upper coil 101 is input with the first current direction, the magnetic polarity of the lower side of the upper iron core 102 is the same as the magnetic polarity of the upper side of the inner permanent magnet, generating a magnetic repulsion force. The magnetic repulsion force between the upper electromagnet and the inner permanent magnet causes the movable valve core to move downward to seal the sealing hole and block the fluid. When the second current direction is input into the upper coil 101, the polarity of the upper iron core is changed. The magnetic pole polarity of the lower side of the upper iron core 102 is opposite to that of the upper side of the inner permanent magnet, generating a magnetic attraction force. Through the magnetic attraction force between the upper iron core and the inner permanent magnet, the movable valve core moves upward to open the sealing hole, allowing fluid to enter the housing cavity 303 from the lower inner through hole 30211 and flow out from the upper inner through hole 30111.

[0045] Example 3: The difference between Example 3 and Example 1 lies in the number of electromagnets arranged. The similarities will not be described in detail here. In this example, the electromagnet is located at the end near the sealing hole. The direction of the first current input to the electromagnet generates a magnetic repulsion force with the inner permanent magnet, which drives the movable valve core to move away from the sealing hole to open the sealing hole. The electromagnet inputs a second current in the direction that generates a magnetic attraction force with the inner permanent magnet, driving the movable valve core to move towards the sealing hole so that the sealing contour faces the sealing hole and seals it.

[0046] In this embodiment, the upper side of the inner permanent magnet can be set as the S pole 5022, and the lower side as the N pole 5021, as shown in the attached figure. Figure 5As shown, when the second current is input into the lower coil 201, the upper side of the lower iron core 202 is the S pole and the lower side is the N pole. The magnetic polarity of the upper side of the lower iron core 202 is opposite to that of the lower side of the inner permanent magnet, generating a magnetic attraction force. The magnetic attraction force between the lower electromagnet and the inner permanent magnet enables the movable valve core to move downward to seal the sealing hole. When the first current direction is input to the current coil 201, the polarity of the lower iron core is changed. The upper side of the lower iron core 202 is the N pole and the lower side is the S pole. The magnetic polarity of the upper side of the lower iron core 202 is the same as the magnetic polarity of the lower side of the inner permanent magnet, generating magnetic repulsion. The magnetic repulsion between the lower iron core and the inner permanent magnet causes the movable valve core to move upward and open the sealing hole.

[0047] Alternatively, the upper side of the inner permanent magnet can be set as the N pole 5021, and the lower side as the S pole 5022. When the second current is input into the lower coil 201, the upper side of the lower iron core 202 is the N pole, and the lower side is the S pole. The magnetic polarity of the upper side of the lower iron core 202 is opposite to that of the lower side of the inner permanent magnet, generating a magnetic attraction force. The magnetic attraction force between the lower iron core and the inner permanent magnet enables the movable valve core to move downward to seal the sealing hole. When the first current is input into the coil 201, the magnetic polarity of the lower iron core 202 is changed. The upper side of the lower iron core 202 is the S pole and the lower side is the N pole. The magnetic polarity of the upper side of the lower iron core 202 is the same as the magnetic polarity of the lower side of the inner permanent magnet, generating a magnetic repulsion force. The magnetic repulsion force between the lower iron core and the inner permanent magnet causes the movable valve core to move upward and open the sealing hole.

[0048] When this utility model is used, the one-way valve is opened and sealed by switching the current direction. When the second current direction is input into the lower coil 201, the magnetic polarity of the upper side of the lower iron core 202 is opposite to the magnetic polarity of the lower side of the inner permanent magnet, generating a magnetic attraction force. The magnetic attraction force between the lower electromagnet and the inner permanent magnet causes the movable valve core to move downward to seal the sealing hole and block the fluid. When the first current direction is input to the lower coil 201, the polarity of the lower iron core is changed. The magnetic pole polarity on the upper side of the lower iron core 202 is the same as the magnetic pole polarity on the lower side of the inner permanent magnet, generating magnetic repulsion. Through the magnetic repulsion between the lower iron core and the inner permanent magnet, the movable valve core moves upward to open the sealing hole, allowing fluid to enter the housing cavity 303 from the lower inner through hole 30211 and flow out from the upper inner through hole 30111.

Claims

1. An electromagnetic magnetically controlled check valve characterized by: The device includes a one-way valve housing, a movable valve core, and an electromagnet. The one-way valve housing has an upper through hole and a lower through hole, one of which is a sealing hole. The movable valve core is disposed in the housing cavity of the one-way valve housing, and the electromagnet is fixed on the one-way valve housing. The movable valve core is equipped with an inner permanent magnet and a sealing profile surface; The electromagnet changes the direction of the input current to generate a magnetic field with variable polarity. This magnetic field repels or attracts the inner permanent magnet, driving the movable valve core to move in the one-way valve housing so that the sealing profile faces the sealing hole to seal or open the sealing hole.

2. An electromagnetic magnetically controlled check valve according to claim 1, characterized in that: The electromagnet is located at the end away from the sealing hole. The electromagnet is input with a first current direction, which generates a magnetic repulsion force with the inner permanent magnet, driving the movable valve core to move towards the sealing hole so that the sealing contour faces the sealing hole and seals it. The electromagnet is input with a second current direction, which generates a magnetic attraction force with the inner permanent magnet, driving the movable valve core to move away from the sealing hole and open the sealing hole.

3. An electromagnetic magnetically controlled check valve according to claim 1, characterized in that: The electromagnet is located at one end near the sealing hole. The direction of the first current input to the electromagnet generates a magnetic repulsion force with the inner permanent magnet, which drives the movable valve core to move away from the sealing hole to open the sealing hole. The electromagnet inputs a second current in the direction that generates magnetic attraction with the inner permanent magnet, driving the movable valve core to move toward the sealing hole so that the sealing contour faces the sealing hole and seals it.

4. An electromagnetic magnetically controlled check valve according to claim 1, characterized in that: The electromagnet is provided in two positions, one of which is located away from the sealing hole and the other is located near the sealing hole. The electromagnet located away from the sealing hole generates a magnetic repulsion force with the inner permanent magnet when the first current is input, while the electromagnet located near the sealing hole generates a magnetic attraction force with the inner permanent magnet when the second current is input, thereby driving the movable valve core to move towards the sealing hole so that the sealing contour faces the sealing hole and seals it. An electromagnet located away from the sealing hole receives a second current and generates a magnetic attraction force with the inner permanent magnet, while an electromagnet located near the sealing hole receives a first current and generates a magnetic repulsion force with the inner permanent magnet, driving the movable valve core to move away from the sealing hole to open it.

5. An electromagnetic magnetically controlled check valve according to claim 1 or 2 or 3 or 4, characterized in that: The outer diameter of the movable valve core matches the inner diameter of the one-way valve housing.

6. An electromagnetic magnetically controlled check valve according to claim 1 or 2 or 3 or 4, characterized in that: The movable valve core includes a valve core housing, the valve core housing has an inner cavity, and the end of the valve core housing near the sealing hole extends outward to form a sealing profile surface that mates with the sealing hole; The internal permanent magnet is located inside the valve core housing.

7. An electromagnetic magnetically controlled check valve according to claim 6, characterized in that: The inner permanent magnet extends outward from one end near the sealing profile surface to form a shape that matches the sealing profile surface.

8. An electromagnetic magnetically controlled check valve according to claim 1 or 2 or 3 or 4 or 7, characterized in that: A sealing ring is provided at the sealing hole position, and the sealing contour surface of the movable valve core is sealed and fitted with the sealing ring.

9. An electromagnetic magnetically controlled check valve according to claim 8, characterized in that: The one-way valve housing has a stepped limiting surface at the sealing hole position, and one end of the sealing ring extends outward to form a limiting boss, which abuts against the stepped limiting surface.

10. An electromagnetic magnetically controlled check valve according to claim 1 or 2 or 3 or 4 or 7 or 9, characterized in that: The one-way valve housing has an upper connecting section connected at the upper through hole and a lower connecting section connected at the lower through hole; The upper connecting section is provided with an upper inner through hole and an upper external thread, the upper inner through hole being connected to the upper through hole; the lower connecting section is provided with a lower inner through hole and a lower external thread, the lower inner through hole being connected to the lower through hole.

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