Electro-permanent magnetic control one-way valve

Abstract

This utility model discloses an electro-permanent magnet magnetically controlled one-way valve, including a one-way valve housing, a movable valve core, an outer permanent magnet, and a coil. 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. The outer permanent magnet is mounted on the one-way valve housing and has a coil disposed on it. The movable valve core has an inner permanent magnet and a sealing contour surface. When the coil is energized or de-energized, the movable valve core moves within the one-way valve housing to seal or open 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 differential or low pressure conditions.

Description

Technical Field

[0001] This utility model relates to the field of one-way valve technology, specifically an electro-permanent magnet magnetically 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 electro-permanent magnet magnetically controlled one-way valve that is simple in structure, highly stable, has a long service life, is suitable for highly corrosive fluids, 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 electro-permanent magnet magnetically controlled one-way valve is characterized in that it includes a one-way valve housing, a movable valve core, an external permanent magnet, and a coil. 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. The external permanent magnet is mounted on the one-way valve housing and is provided with a coil. The movable valve core is equipped with an inner permanent magnet and a sealing profile surface; The coil is energized or de-energized to move the movable valve core within the one-way valve housing to seal or open the sealing hole. The structure is simple, requiring no spring structure, making it suitable for highly corrosive fluid applications. It features high structural stability and a long service life. The combination of the coil and the permanent magnet allows for valve opening and closing state switching simply by energizing or de-energizing the coil. The response time is short, and valve opening no longer depends on fluid pressure difference, making it suitable for zero pressure difference or low-pressure conditions.

[0007] The outer permanent magnet of this invention is located at the end away from the sealing hole. When the coil is energized, the magnetic polarity of the outer permanent magnet on the side closer to the inner permanent magnet is the same as the magnetic polarity of the corresponding end of the inner permanent magnet. The movable valve core is driven by magnetic repulsion to move towards the sealing hole so that the sealing contour faces the sealing hole and seals it. When the coil is de-energized, the magnetic polarity of the outer permanent magnet on the side closer to the inner permanent magnet is opposite to the magnetic polarity of the corresponding end of the inner permanent magnet. The movable valve core is driven by magnetic attraction to move away from the sealing hole and open the sealing hole. When the coil is energized, the magnetic polarity of the outer permanent magnet near the inner permanent magnet is opposite to that of the corresponding end of the inner permanent magnet. The movable valve core is driven by magnetic attraction to move away from the sealing hole and open the sealing hole. When the coil is de-energized, the magnetic polarity of the outer permanent magnet near the inner permanent magnet is the same as that of the corresponding end of the inner permanent magnet. The movable valve core is driven by magnetic repulsion to move towards the sealing hole so that the sealing contour faces the sealing hole and seals it.

[0008] The outer permanent magnet of this invention is located at one end near the sealing hole. When the coil is energized, the magnetic polarity of the outer permanent magnet on the side near the inner permanent magnet is opposite to that of the corresponding end of the inner permanent magnet. The movable valve core is driven by magnetic attraction to move towards the sealing hole so that the sealing contour faces the sealing hole and seals it. When the coil is de-energized, the magnetic polarity of the outer permanent magnet on the side near the inner permanent magnet is the same as that of the corresponding end of the inner permanent magnet. The movable valve core is driven by magnetic repulsion to move away from the sealing hole and open the sealing hole. When the coil is energized, the magnetic polarity of the outer permanent magnet near the inner permanent magnet is the same as the magnetic polarity of the corresponding end of the inner permanent magnet. The movable valve core is driven by magnetic repulsion to move away from the sealing hole and open the sealing hole. When the coil is de-energized, the magnetic polarity of the outer permanent magnet near the inner permanent magnet is opposite to the magnetic polarity of the corresponding end of the inner permanent magnet. The movable valve core is driven by magnetic attraction to move towards the sealing hole so that the sealing contour faces the sealing hole and seals it.

[0009] This invention comprises two external permanent magnets, one located away from the sealing hole and the other located near the sealing hole. Each external permanent magnet is equipped with a coil. When the coil is energized, the magnetic polarity of the external permanent magnet at the end away from the sealing hole, near the inner permanent magnet, is the same as the corresponding magnetic polarity of the inner permanent magnet. The magnetic polarity of the external permanent magnet at the end near the sealing hole, near the inner permanent magnet, is opposite to the corresponding magnetic polarity of the inner permanent magnet. The movable valve core is driven by magnetic repulsion and magnetic attraction to move towards the sealing hole, causing the sealing contour to face the sealing hole and seal it. When the coil is de-energized, the magnetic polarity of the external permanent magnet at the end away from the sealing hole, near the inner permanent magnet, is opposite to the corresponding magnetic polarity of the inner permanent magnet. The magnetic polarity of the external permanent magnet at the end near the sealing hole, near the inner permanent magnet, is the same as the corresponding magnetic polarity of the inner permanent magnet. The movable valve core is driven by magnetic attraction and magnetic repulsion to move away from the sealing hole and open the sealing hole. When the coil is energized, the magnetic polarity of the outer permanent magnet at the end furthest from the sealing hole, near the inner permanent magnet, is opposite to that of the corresponding end of the inner permanent magnet. Conversely, the magnetic polarity of the outer permanent magnet at the end furthest from the sealing hole, near the inner permanent magnet, is the same as that of the corresponding end of the inner permanent magnet. Driven by magnetic repulsion and attraction, the movable valve core moves away from the sealing hole to open it. When the coil is de-energized, the magnetic polarity of the outer permanent magnet at the end furthest from the sealing hole, near the inner permanent magnet, is the same as that of the corresponding end of the inner permanent magnet. Conversely, the magnetic polarity of the outer permanent magnet at the end furthest from the sealing hole, near the inner permanent magnet, is opposite to that of the corresponding end of the inner permanent magnet. Driven by magnetic attraction and repulsion, the movable valve core moves towards the sealing hole to seal the sealing profile.

[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 end of the valve core housing near the sealing hole extends outward 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 beneficial effects of this utility model are as follows: it has a simple structure, does not require a spring structure, is suitable for highly corrosive fluids, has high structural stability, and a long service life. The cooperation between the coil and the permanent magnet allows the valve to switch between open and closed states simply by energizing or de-energizing the coil. The response time is short, and the valve opening no longer depends on the fluid pressure difference, making it suitable for zero pressure difference or low pressure conditions. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of the electro-permanent magnet magnetically controlled one-way valve in Example 1.

[0018] Figure 2 This is the main view of the electro-permanent magnet magnetically controlled one-way valve in Embodiment 1.

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

[0020] Figure 4 yes Figure 2 Sectional view (AA) (open).

[0021] Figure 5 This is a cross-sectional view of the sealed state of the electro-permanent magnet magnetically controlled one-way valve in Example 3.

[0022] Figure 6 This is a cross-sectional view of the open state of the electro-permanent magnet magnetically controlled one-way valve in Embodiment 3.

[0023] Figure 7 This is a cross-sectional view of the sealed state of the electro-permanent magnet magnetically controlled one-way valve in Example 5.

[0024] Figure 8 This is a cross-sectional view of the open state of the electro-permanent magnet magnetically controlled one-way valve in Embodiment 5.

[0025] Reference numerals: Upper coil-101, Upper permanent magnet-102, Upper permanent magnet N pole-1021, Upper permanent magnet S pole-1022; Lower coil-201, lower permanent magnet-202, lower permanent magnet N pole-2021, lower permanent magnet S pole-2022; 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

[0026] The present invention will now be described in conjunction with the accompanying drawings and embodiments.

[0027] Example 1: As attached Figure 1-4 As shown, an electro-permanent magnet magnetically controlled one-way valve includes a one-way valve housing 3, a movable valve core, an external permanent magnet, and a coil. 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 303 of the one-way valve housing 3. The external permanent magnet is mounted on the one-way valve housing 3, and a coil is provided on the external permanent magnet. The movable valve core is provided with an inner permanent magnet and a sealing profile surface 5011; The coil is energized to change the polarity of the external permanent magnet. The energization or de-energization of the coil causes the movable valve core to move in the one-way valve housing 3 to seal or open the sealing hole. The structure is simple, does not require a spring structure, is suitable for highly corrosive fluids, has high structural stability, and a long service life. The cooperation between the coil and the permanent magnet can realize the valve opening and closing state switching by energizing or de-energizing the coil. The response time is short, and the valve opening no longer depends on the fluid pressure difference, which can adapt to zero pressure difference or low pressure conditions.

[0028] 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.

[0029] In this embodiment, there are two external permanent magnets, one of which is located away from the sealing hole, which is the upper permanent magnet 102 in this embodiment, and the other is located near the sealing hole, which is the lower permanent magnet 202 in this embodiment. Each external permanent magnet is provided with a coil. In this embodiment, the upper permanent magnet 102 is provided with an upper coil 101, and the lower permanent magnet 202 is provided with a lower coil 201.

[0030] In this embodiment, the upper permanent magnet 102 and the lower permanent magnet 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 permanent magnet 102 or fixed on the outside of the upper permanent magnet 102, and the lower coil 201 can be wound on the lower permanent magnet 202 or fixed on the outside of the lower permanent magnet 202.

[0031] When the coil is energized, the magnetic polarity of the outer permanent magnet at the end furthest from the sealing hole, near the inner permanent magnet, is opposite to that of the corresponding end of the inner permanent magnet. The magnetic polarity of the outer permanent magnet at the end furthest from the sealing hole, near the inner permanent magnet, is the same as that of the corresponding end of the inner permanent magnet. The movable valve core is driven by magnetic repulsion and magnetic attraction to move away from the sealing hole and open the sealing hole. When the coil is de-energized, the magnetic polarity of the outer permanent magnet at the end furthest from the sealing hole, near the inner permanent magnet, is the same as that of the corresponding end of the inner permanent magnet. The magnetic polarity of the outer permanent magnet at the end furthest from the sealing hole, near the inner permanent magnet, is opposite to that of the corresponding end of the inner permanent magnet. The movable valve core is driven by magnetic attraction and magnetic repulsion to move towards the sealing hole so that the sealing contour faces the sealing hole and seals it.

[0032] 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 de-energized sealing state. When the upper coil 101 and lower coil 201 are de-energized, the upper permanent magnet 102 has an N pole 1021 on its upper side and an S pole 1022 on its lower side. The magnetic polarity of the lower side of the upper permanent magnet 102 is the same as that of the upper side of the inner permanent magnet, generating a magnetic repulsion force. The lower permanent magnet 202 has an S pole 2022 on its upper side and an N pole 2021 on its lower side. The magnetic polarity of the upper side of the lower permanent magnet 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 and inner permanent magnets, as well as the magnetic attraction force between the lower and inner permanent magnets, enables the movable valve core to move downwards and seal the sealing hole. As attached Figure 4The diagram shows the energized open state. When the upper coil 101 and lower coil 201 are energized, the upper coil 101 changes the polarity of the upper permanent magnet, and the lower coil 201 changes the polarity of the lower permanent magnet. At this time, the upper permanent magnet 102 has its S pole 1022 on the top and its N pole 1021 on the bottom. The polarity of the lower pole of the upper permanent magnet 102 is opposite to that of the upper pole of the inner permanent magnet, generating a magnetic attraction force. The lower permanent magnet 202 has its N pole 2021 on the top and its S pole 2022 on the bottom. The polarity of the upper pole of the lower permanent magnet 202 is the same as that of the lower pole of the inner permanent magnet, generating a magnetic repulsion force. The magnetic attraction force between the upper permanent magnet and the inner permanent magnet, as well as the magnetic repulsion force between the lower permanent magnet and the inner permanent magnet, causes the movable valve core to move upward and open the sealing hole.

[0033] Alternatively, the upper side of the inner permanent magnet can be set to have the N pole 5021, and the lower side to have the S pole 5022. When the upper coil 101 and the lower coil 201 are de-energized, the upper permanent magnet 102 has the S pole 1022 on its upper side and the N pole 1021 on its lower side. The magnetic polarity of the lower side of the upper permanent magnet 102 is the same as that of the upper side of the inner permanent magnet, generating a magnetic repulsion force. The lower permanent magnet 202 has the N pole 2021 on its upper side and the S pole 2022 on its lower side. The magnetic polarity of the upper side of the lower permanent magnet 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 permanent magnet and the inner permanent magnet, as well as the magnetic attraction force between the lower permanent magnet and the inner permanent magnet, enable the movable valve core to move downwards and seal the sealing hole. When the upper coil 101 and the lower coil 201 are energized, the upper coil 101 changes the polarity of the upper permanent magnet, and the lower coil 201 changes the polarity of the lower permanent magnet. At this time, the upper permanent magnet 102 has its N pole 1021 on the upper side and its S pole 1022 on the lower side. The polarity of the lower pole of the upper permanent magnet 102 is opposite to that of the upper pole of the inner permanent magnet, generating a magnetic attraction force. The lower permanent magnet 202 has its S pole 2022 on the upper side and its N pole 2021 on the lower side. The polarity of the upper pole of the lower permanent magnet 202 is the same as that of the lower pole of the inner permanent magnet, generating a magnetic repulsion force. The magnetic attraction force between the upper permanent magnet and the inner permanent magnet, as well as the magnetic repulsion force between the lower permanent magnet and the inner permanent magnet, enable the movable valve core to move upward and open the sealing hole.

[0034] 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.

[0035] This embodiment is as shown in the appendix. Figure 3 and attached Figure 4 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.

[0036] 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.

[0037] The inner permanent magnet 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 at the sealing profile surface 5011 of the valve core housing 501, further strengthening the magnetic force.

[0038] In this embodiment, the sealing profile 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.

[0039] 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.

[0040] 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.

[0041] 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.

[0042] 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.

[0043] When this utility model is in use, the electro-permanent magnet magnetically controlled one-way valve is in a de-energized closed state, blocking the fluid. When fluid needs to pass through, the upper coil 101 and the lower coil 201 are energized. The energization of the upper coil 101 changes the magnetic polarity of the upper permanent magnet, and the energization of the lower coil 201 changes the magnetic polarity of the lower permanent magnet. Under the action of the magnetic attraction between the upper permanent magnet and the inner permanent magnet, and the magnetic repulsion between the lower permanent magnet and the inner permanent magnet, the movable valve core moves upward, causing the sealing contour surface 5011 to leave the sealing hole position, so that the fluid enters the housing cavity 303 from the lower inner through hole 30211 and flows out from the upper inner through hole 30111.

[0044] Example 2: The difference between Example 2 and Example 1 is that when the coil is energized, the magnetic polarity of the outer permanent magnet at the end away from the sealing hole is the same as that of the inner permanent magnet at the corresponding end, while the magnetic polarity of the outer permanent magnet at the end near the sealing hole is opposite to that of the inner permanent magnet at the corresponding end. The movable valve core is driven by magnetic repulsion and magnetic attraction to move towards the sealing hole, causing the sealing contour surface 5011 to seal the sealing hole. When the coil is de-energized, the magnetic polarity of the outer permanent magnet at the end away from the sealing hole is opposite to that of the inner permanent magnet at the corresponding end, while the magnetic polarity of the outer permanent magnet at the end near the sealing hole is the same as that of the inner permanent magnet at the corresponding end. The movable valve core is driven by magnetic attraction and magnetic repulsion to move away from the sealing hole, opening the sealing hole.

[0045] 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. When the power is off, it is in the open state. When the upper coil 101 and the lower coil 201 are de-energized, the upper permanent magnet 102 has the S pole 1022 on the upper side and the N pole 1021 on the lower side. The magnetic polarity of the lower side of the upper permanent magnet 102 is opposite to that of the upper side of the inner permanent magnet, generating a magnetic attraction force. The lower permanent magnet 202 has the N pole 2021 on the upper side and the S pole 2022 on the lower side. The magnetic polarity of the upper side of the lower permanent magnet 202 is the same as that of the lower side of the inner permanent magnet, generating a magnetic repulsion force. The magnetic attraction force between the upper permanent magnet and the inner permanent magnet, as well as the magnetic repulsion force between the lower permanent magnet and the inner permanent magnet, enable the movable valve core to move upward and open the sealing hole.

[0046] When energized, the valve is in a sealed state. When the upper coil 101 and the lower coil 201 are energized, the upper coil 101 changes the polarity of the upper permanent magnet 102, and the lower coil 102 changes the polarity of the lower permanent magnet 202. At this time, the upper permanent magnet 102 has its N pole 1021 on the top and its S pole 1022 on the bottom. The polarity of the lower pole of the upper permanent magnet 102 is the same as that of the upper pole of the inner permanent magnet, generating a magnetic repulsion force. The lower permanent magnet 202 has its S pole 2022 on the top and its N pole 2021 on the bottom. The polarity of the upper pole of the lower permanent magnet 202 is opposite to that of the lower pole of the inner permanent magnet, generating a magnetic attraction force. The magnetic repulsion force between the upper permanent magnet and the inner permanent magnet, as well as the magnetic attraction force between the lower permanent magnet and the inner permanent magnet, enable the movable valve core to move downward and seal the sealing hole.

[0047] Alternatively, the upper side of the inner permanent magnet can be set to have the N pole 5021, and the lower side to have the S pole 5022. When the upper coil 101 and the lower coil 201 are de-energized, the upper permanent magnet 102 has the N pole 1021 on its upper side and the S pole 1022 on its lower side. The magnetic polarity of the lower side of the upper permanent magnet 102 is opposite to that of the upper side of the inner permanent magnet, generating a magnetic attraction force. The lower permanent magnet 202 has the S pole 2022 on its upper side and the N pole 2021 on its lower side. The magnetic polarity of the upper side of the lower permanent magnet 202 is the same as that of the lower side of the inner permanent magnet, generating a magnetic repulsion force. The magnetic attraction force between the upper permanent magnet and the inner permanent magnet, as well as the magnetic repulsion force between the lower permanent magnet and the inner permanent magnet, enable the movable valve core to move upward and open the sealing hole.

[0048] When the upper coil 101 and the lower coil 201 are energized, the upper coil 101 changes the polarity of the upper permanent magnet, and the lower coil 201 changes the polarity of the lower permanent magnet. The upper permanent magnet 102 has an S pole 1022 on its upper side and an N pole 1021 on its lower side. The polarity of the lower pole of the upper permanent magnet 102 is the same as that of the upper pole of the inner permanent magnet, generating a magnetic repulsion force. The lower permanent magnet 202 has an N pole 2021 on its upper side and an S pole 2022 on its lower side. The polarity of the upper pole of the lower permanent magnet 202 is opposite to that of the lower pole of the inner permanent magnet, generating a magnetic attraction force. The magnetic repulsion force between the upper permanent magnet and the inner permanent magnet, as well as the magnetic attraction force between the lower permanent magnet and the inner permanent magnet, enable the movable valve core to move downwards and seal the sealing hole.

[0049] When this utility model is in use, the electro-permanent magnet magnetically controlled one-way valve is in the normally open state when power is off. When it is necessary to block the fluid, the upper coil 101 and the lower coil 201 are energized. The energization of the upper coil 101 changes the magnetic polarity of the upper permanent magnet, and the energization of the lower coil 201 changes the magnetic polarity of the lower permanent magnet. Under the action of the magnetic repulsion between the upper permanent magnet and the inner permanent magnet and the magnetic attraction between the lower permanent magnet and the inner permanent magnet, the movable valve core moves downward, so that the sealing contour surface 5011 abuts against the sealing hole, thereby achieving fluid blockage.

[0050] Example 3: The difference between Example 3 and Example 1 lies in the number of external permanent magnets. The similarities will not be described in detail here. In this example, the external permanent magnet is located at the end away from the sealing hole, and an upper permanent magnet 102 is used. When the coil is energized, the magnetic polarity of the side of the external permanent magnet closer to the inner permanent magnet is opposite to the magnetic polarity of the corresponding end of the inner permanent magnet. The movable valve core is driven by magnetic attraction to move away from the sealing hole and open the sealing hole. When the coil is de-energized, the magnetic polarity of the side of the external permanent magnet closer to the inner permanent magnet is the same as the magnetic polarity of the corresponding end of the inner permanent magnet. The movable valve core is driven by magnetic repulsion to move towards the sealing hole so that the sealing contour surface 5011 seals the sealing hole.

[0051] 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 5 The diagram shows the de-energized sealing state. When the upper coil 101 and lower coil 201 are de-energized, the upper permanent magnet 102 has an N pole 1021 on its upper side and an S pole 1022 on its lower side. The magnetic polarity of the lower side of the upper permanent magnet 102 is the same as that of the upper side of the inner permanent magnet, generating a magnetic repulsion force. The magnetic repulsion force between the upper and inner permanent magnets enables the movable valve core to move downwards and seal the sealing hole. As attached Figure 6The above describes the energized open state. When the upper coil 101 and the lower coil 201 are energized, the upper coil 101 changes the polarity of the upper permanent magnet, and the lower coil 201 changes the polarity of the lower permanent magnet. At this time, the upper permanent magnet 102 has an S pole 1022 on its upper side and an N pole 1021 on its lower side. The polarity of the lower side of the upper permanent magnet 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 and inner permanent magnets causes the movable valve core to move upward and open the sealing hole.

[0052] Alternatively, the upper side of the inner permanent magnet can be set to be the N pole 5021, and the lower side to be the S pole 5022. When the upper coil 101 and the lower coil 201 are de-energized, the upper permanent magnet 102 has the S pole 1022 on its upper side and the N pole 1021 on its lower side. The magnetic polarity of the lower side of the upper permanent magnet 102 is the same as that of the upper side of the inner permanent magnet, generating a magnetic repulsion force. The magnetic repulsion force between the upper permanent magnet and the inner permanent magnet enables the movable valve core to move downward to seal the sealing hole. When the upper coil 101 and the lower coil 201 are energized, the upper coil 101 changes the polarity of the upper permanent magnet, and the lower coil 201 changes the polarity of the lower permanent magnet. At this time, the upper permanent magnet 102 has the N pole 1021 on the upper side and the S pole 1022 on the lower side. The polarity of the lower side of the upper permanent magnet 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 permanent magnet and the inner permanent magnet causes the movable valve core to move upward and open the sealing hole.

[0053] When this utility model is in use, the electro-permanent magnet magnetically controlled one-way valve is in a de-energized closed state, blocking the fluid. When fluid needs to pass through, the upper coil 101 is energized, which changes the polarity of the upper permanent magnet. Under the magnetic attraction between the upper permanent magnet and the inner permanent magnet, the movable valve core moves upward, causing the sealing contour surface 5011 to leave the sealing hole position, so that the fluid enters the housing cavity 303 from the lower inner through hole 30211 and flows out from the upper inner through hole 30111.

[0054] Example 4: The difference between Example 4 and Example 3 is that when the coil is energized, the magnetic polarity of the outer permanent magnet near the inner permanent magnet is the same as the magnetic polarity of the corresponding end of the inner permanent magnet. The movable valve core is driven by magnetic repulsion to move towards the sealing hole so that the sealing contour faces the sealing hole to seal. When the coil is de-energized, the magnetic polarity of the outer permanent magnet near the inner permanent magnet is opposite to the magnetic polarity of the corresponding end of the inner permanent magnet. The movable valve core is driven by magnetic attraction to move away from the sealing hole to open the sealing hole. 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. When the power is off, it is in the open state. When the upper coil 101 is de-energized, the upper side of the upper permanent magnet 102 is the S pole 1022 and the lower side is the N pole 1021. The magnetic polarity of the lower side of the upper permanent magnet 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 permanent magnet and the inner permanent magnet enables the movable valve core to move upward and open the sealing hole.

[0055] When energized, the upper coil 101 is in a sealed state. When the upper coil 101 is energized, it changes the polarity of the upper permanent magnet 102. At this time, the upper side of the upper permanent magnet 102 is the N pole 1021, and the lower side is the S pole 1022. The polarity of the lower side of the upper permanent magnet 102 is the same as the polarity of the upper side of the inner permanent magnet, generating a magnetic repulsion force. The magnetic repulsion force between the upper permanent magnet and the inner permanent magnet enables the movable valve core to move downward to seal the sealing hole.

[0056] Alternatively, the upper side of the inner permanent magnet can be set to be the N pole 5021 and the lower side to be the S pole 5022. When the upper coil 101 is de-energized, the upper side of the upper permanent magnet 102 is the N pole 1021 and the lower side is the S pole 1022. The magnetic polarity of the lower side of the upper permanent magnet 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 permanent magnet and the inner permanent magnet enables the movable valve core to move upward and open the sealing hole.

[0057] When the upper coil 101 is energized, the upper coil 101 changes the polarity of the upper permanent magnet. The upper side of the upper permanent magnet 102 is the S pole 1022, and the lower side is the N pole 1021. The polarity of the lower side of the upper permanent magnet 102 is the same as the polarity of the upper side of the inner permanent magnet, generating a magnetic repulsion force. The magnetic repulsion force between the upper permanent magnet and the inner permanent magnet enables the movable valve core to move downward to seal the sealing hole.

[0058] When this utility model is in use, the electro-permanent magnet magnetic control one-way valve is in the normally open state when power is off. When it is necessary to block the fluid, the upper coil 101 is energized. The energization of the upper coil 101 changes the magnetic polarity of the upper permanent magnet. Under the action of the magnetic repulsion between the upper permanent magnet and the inner permanent magnet, the movable valve core moves downward, so that the sealing contour surface 5011 abuts against the sealing hole, thereby achieving fluid blockage.

[0059] Example 5: The difference between Example 5 and Example 1 lies in the number of permanent magnets arranged. The similarities will not be described in detail here. In this example, the outer permanent magnet is located at the end near the sealing hole, and the lower permanent magnet 202 is used. When the coil is energized, the magnetic polarity of the outer permanent magnet near the inner permanent magnet is the same as the magnetic polarity of the corresponding end of the inner permanent magnet. The movable valve core is driven by magnetic repulsion to move away from the sealing hole and open the sealing hole. When the coil is de-energized, the magnetic polarity of the outer permanent magnet near the inner permanent magnet is opposite to the magnetic polarity of the corresponding end of the inner permanent magnet. The movable valve core is driven by magnetic attraction to move towards the sealing hole so that the sealing contour faces the sealing hole and seals it.

[0060] 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 7 The diagram shows the de-energized sealing state. With the lower coil 201 de-energized, the upper side of the lower permanent magnet 202 has the lower permanent magnet S pole 2022, and the lower side has the lower permanent magnet N pole 2021. The magnetic polarity of the upper side of the lower permanent magnet 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 permanent magnet and the inner permanent magnet enables the movable valve core to move downwards and seal the sealing hole. As attached Figure 8 The diagram shows the energized open state. When the lower coil 201 is energized, it changes the polarity of the lower permanent magnet. At this time, the upper side of the lower permanent magnet 202 is the N pole 2021, and the lower side is the S pole 2022. The polarity of the upper side of the lower permanent magnet 202 is the same as that of the lower side of the inner permanent magnet, generating a magnetic repulsion force. The magnetic repulsion force between the lower permanent magnet and the inner permanent magnet causes the movable valve core to move upward and open the sealing hole.

[0061] 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 lower coil 201 is de-energized, the upper side of the lower permanent magnet 202 is the N pole 2021, and the lower side is the S pole 2022. The magnetic polarity of the upper side of the lower permanent magnet 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 permanent magnet and the inner permanent magnet enables the movable valve core to move downward to seal the sealing hole.

[0062] When the lower coil 201 is energized, the lower coil 201 changes the polarity of the lower permanent magnet. At this time, the upper side of the lower permanent magnet 202 is the S pole 2022, and the lower side is the N pole 2021. The polarity of the upper side of the lower permanent magnet 202 is the same as the polarity of the lower side of the inner permanent magnet, generating a magnetic repulsion force. The magnetic repulsion force between the lower permanent magnet and the inner permanent magnet causes the movable valve core to move upward and open the sealing hole.

[0063] When this utility model is in use, the electro-permanent magnet magnetically controlled one-way valve is in a de-energized closed state, blocking the fluid. When fluid needs to pass through, the lower coil 201 is energized, which changes the polarity of the lower permanent magnet. Under the action of the magnetic repulsion between the lower permanent magnet and the inner permanent magnet, the movable valve core moves upward, causing the sealing contour surface 5011 to leave the sealing hole position, so that the fluid enters the housing cavity 303 from the lower inner through hole 30211 and flows out from the upper inner through hole 30111.

[0064] Example 6: The difference between Example 6 and Example 5 is that when the coil is energized, the magnetic polarity of the outer permanent magnet near the inner permanent magnet is opposite to that of the corresponding end of the inner permanent magnet. The movable valve core is driven by magnetic attraction to move towards the sealing hole so that the sealing contour faces the sealing hole to seal. When the coil is de-energized, the magnetic polarity of the outer permanent magnet near the inner permanent magnet is the same as that of the corresponding end of the inner permanent magnet. The movable valve core is driven by magnetic repulsion to move away from the sealing hole to open the sealing hole.

[0065] 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. When the power is off, it is in the open state. When the lower coil 201 is de-energized, the upper side of the lower permanent magnet 202 is the N pole 2021 and the lower side is the S pole 2022. The magnetic polarity of the upper side of the lower permanent magnet 202 is the same as that of the lower side of the inner permanent magnet, generating magnetic repulsion. The magnetic repulsion between the lower permanent magnet and the inner permanent magnet enables the movable valve core to move upward and open the sealing hole.

[0066] When energized, the valve is in a sealed state. When the lower coil 201 is energized, the lower coil 102 is energized, changing the polarity of the lower permanent magnet 202. At this time, the upper side of the lower permanent magnet 202 is the S pole 2022, and the lower side is the N pole 2021. The polarity of the upper side of the lower permanent magnet 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 permanent magnet and the inner permanent magnet enables the movable valve core to move downward and seal the sealing hole.

[0067] 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 lower coil 201 is de-energized, the upper side of the lower permanent magnet 202 is the S pole 2022, and the lower side is the N pole 2021. The magnetic polarity of the upper side of the lower permanent magnet 202 is the same as that of the lower side of the inner permanent magnet, generating magnetic repulsion. The magnetic repulsion between the lower permanent magnet and the inner permanent magnet enables the movable valve core to move upward and open the sealing hole.

[0068] When the lower coil 201 is energized, the lower coil 201 changes the polarity of the lower permanent magnet. At this time, the upper side of the lower permanent magnet 202 is the N pole 2021, and the lower side is the S pole 2022. The polarity of the upper side of the lower permanent magnet 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 permanent magnet and the inner permanent magnet enables the movable valve core to move downward to seal the sealing hole.

[0069] When this utility model is in use, the electro-permanent magnet magnetic control one-way valve is in the normally open state when power is off. When it is necessary to block the fluid, the lower coil 201 is energized. The energization of the lower coil 201 changes the polarity of the lower permanent magnet. Under the action of the magnetic attraction between the lower permanent magnet and the inner permanent magnet, the movable valve core moves downward, so that the sealing contour surface 5011 abuts against the sealing hole, thereby achieving fluid blockage.

[0070] In the above embodiments, a reverse magnetic field is generated by adjusting the direction of the coil current. When the strength of the reverse magnetic field exceeds the coercivity of the permanent magnet, a reverse magnetic field can be temporarily formed in the magnetic circuit. The permanent magnet (its own coercivity) and the coil (coil current intensity, number of turns, etc.) can be selected according to the actual situation.

Claims

1. An electro-permanent magnetic magnetic clutched one-way valve, characterized by: The device includes a one-way valve housing, a movable valve core, an external permanent magnet, and a coil. 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. The external permanent magnet is mounted on the one-way valve housing and has a coil disposed on the external permanent magnet. The movable valve core is equipped with an inner permanent magnet and a sealing profile surface; The coil being energized or de-energized causes the movable valve core to move within the one-way valve housing, sealing or opening the sealing hole.

2. An electro-permanent magnetic control one-way valve according to claim 1, characterized in that: The outer permanent magnet is located at the end away from the sealing hole. When the coil is energized, the magnetic polarity of the outer permanent magnet near the inner permanent magnet is the same as the magnetic polarity of the corresponding end of the inner permanent magnet. The movable valve core is driven by magnetic repulsion to move towards the sealing hole so that the sealing contour faces the sealing hole and seals it. When the coil is de-energized, the magnetic polarity of the outer permanent magnet near the inner permanent magnet is opposite to the magnetic polarity of the corresponding end of the inner permanent magnet. The movable valve core is driven by magnetic attraction to move away from the sealing hole and open the sealing hole. When the coil is energized, the magnetic polarity of the outer permanent magnet near the inner permanent magnet is opposite to that of the corresponding end of the inner permanent magnet. The movable valve core is driven by magnetic attraction to move away from the sealing hole and open the sealing hole. When the coil is de-energized, the magnetic polarity of the outer permanent magnet near the inner permanent magnet is the same as that of the corresponding end of the inner permanent magnet. The movable valve core is driven by magnetic repulsion to move towards the sealing hole so that the sealing contour faces the sealing hole and seals it.

3. An electro-permanent magnetic control one-way valve according to claim 1, characterized in that: The outer permanent magnet is located at one end near the sealing hole. When the coil is energized, the magnetic polarity of the outer permanent magnet on the side near the inner permanent magnet is opposite to that of the corresponding end of the inner permanent magnet. The movable valve core is driven by magnetic attraction to move towards the sealing hole so that the sealing contour faces the sealing hole and seals it. When the coil is de-energized, the magnetic polarity of the outer permanent magnet on the side near the inner permanent magnet is the same as that of the corresponding end of the inner permanent magnet. The movable valve core is driven by magnetic repulsion to move away from the sealing hole and open the sealing hole. When the coil is energized, the magnetic polarity of the outer permanent magnet near the inner permanent magnet is the same as the magnetic polarity of the corresponding end of the inner permanent magnet. The movable valve core is driven by magnetic repulsion to move away from the sealing hole and open the sealing hole. When the coil is de-energized, the magnetic polarity of the outer permanent magnet near the inner permanent magnet is opposite to the magnetic polarity of the corresponding end of the inner permanent magnet. The movable valve core is driven by magnetic attraction to move towards the sealing hole so that the sealing contour faces the sealing hole and seals it.

4. An electro-permanent magnetic control one-way valve according to claim 1, characterized in that: Two external permanent magnets are provided, one located away from the sealing hole and the other located near the sealing hole. Each external permanent magnet is equipped with a coil. When the coil is energized, the magnetic polarity of the external permanent magnet at the end away from the sealing hole, near the inner permanent magnet, is the same as the corresponding magnetic polarity of the inner permanent magnet. The magnetic polarity of the external permanent magnet at the end near the sealing hole, near the inner permanent magnet, is opposite to the corresponding magnetic polarity of the inner permanent magnet. The movable valve core is driven by magnetic repulsion and magnetic attraction to move towards the sealing hole so that the sealing contour faces the sealing hole and seals it. When the coil is de-energized, the magnetic polarity of the external permanent magnet at the end away from the sealing hole, near the inner permanent magnet, is opposite to the corresponding magnetic polarity of the inner permanent magnet. The magnetic polarity of the external permanent magnet at the end near the sealing hole, near the inner permanent magnet, is the same as the corresponding magnetic polarity of the inner permanent magnet. The movable valve core is driven by magnetic attraction and magnetic repulsion to move away from the sealing hole and open the sealing hole. When the coil is energized, the magnetic polarity of the outer permanent magnet at the end furthest from the sealing hole, near the inner permanent magnet, is opposite to that of the corresponding end of the inner permanent magnet. Conversely, the magnetic polarity of the outer permanent magnet at the end furthest from the sealing hole, near the inner permanent magnet, is the same as that of the corresponding end of the inner permanent magnet. Driven by magnetic repulsion and attraction, the movable valve core moves away from the sealing hole to open it. When the coil is de-energized, the magnetic polarity of the outer permanent magnet at the end furthest from the sealing hole, near the inner permanent magnet, is the same as that of the corresponding end of the inner permanent magnet. Conversely, the magnetic polarity of the outer permanent magnet at the end furthest from the sealing hole, near the inner permanent magnet, is opposite to that of the corresponding end of the inner permanent magnet. Driven by magnetic attraction and repulsion, the movable valve core moves towards the sealing hole to seal the sealing profile.

5. The electric permanent magnetic 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. The electric permanent magnetic check valve of claim 1 or 2 or 3 or 4, wherein: 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 electro-permanent magnetic control one-way 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. The electric permanent magnetic check valve of claim 1 or 2 or 3 or 4 or 7, wherein: 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. The electro-permanent magnet magnetically controlled one-way 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. The electric permanent magnetic check valve of claim 1 or 2 or 3 or 4 or 7 or 9, wherein: 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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