Permanent magnet magnetic control one-way valve

Abstract

The utility model discloses a permanent magnetism magnetic control check valve, including check valve casing, movable valve core and outer permanent magnet, the check valve casing is equipped with upper through -hole and lower through -hole, one of upper through -hole and lower through -hole is sealed hole, the movable valve core is located in the cavity of check valve casing's casing, the outer permanent magnet is installed on check valve casing, the movable valve core is equipped with inner permanent magnet and sealing profile surface, the inner permanent magnet is driven movable valve core in check valve casing and moves with outer permanent magnet cooperation and makes sealing profile surface seal to sealed hole, the utility model has simple structure, high stability, long service life, can be applicable to high corrosive fluid occasion etc. Advantage.

Description

Technical Field

[0001] This utility model relates to the field of one-way valve technology, specifically a 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, and the spring is prone to corrosion, leading to valve failure; second, the springs produced in batches cannot guarantee consistency, resulting in problems such as fluctuations in opening pressure and unstable flow control; third, the springs are prone to deformation or wear after long-term use, leading to check valve failure or changes in working pressure. Utility Model Content

[0004] The purpose of this invention is to overcome the shortcomings of the prior art and provide a permanent magnet magnetically controlled check valve that is simple in structure, highly stable, has a long service life, and is suitable for highly corrosive fluid applications.

[0005] The technical solution adopted by this utility model to solve its technical problem is:

[0006] A permanent magnet magnetically controlled one-way valve, characterized in that: it includes a one-way valve housing, a movable valve core and an external permanent magnet, 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 external permanent magnet is mounted on the one-way valve housing;

[0007] The movable valve core is provided with an inner permanent magnet and a sealing contour surface. The inner permanent magnet cooperates with the outer permanent magnet to drive the movable valve core to move in the one-way valve housing so that the sealing contour surface seals the sealing hole.

[0008] With its simple structure and lack of the need for springs, it is suitable for use in highly corrosive fluid environments, exhibits high structural stability, and has a long service life.

[0009] The external permanent magnet of this utility model is located at the end away from the sealing hole. The magnetic polarity of the side of the external permanent magnet close to the internal permanent magnet is the same as the magnetic polarity of the corresponding end of the internal 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 for sealing.

[0010] Alternatively, the external permanent magnet may be located at one end near the sealing hole, and the magnetic polarity of the external permanent magnet on the side near the internal permanent magnet may be opposite to the magnetic polarity of the corresponding end of the internal permanent magnet. The movable valve core may be driven by magnetic attraction to move toward the sealing hole so that the sealing contour faces the sealing hole and seals it. The one-way valve may be in a normally closed state by magnetic repulsion or magnetic attraction.

[0011] The present invention provides two external permanent magnets, one of which is located away from the sealing hole and the other is located near the sealing hole. The magnetic polarity of the external permanent magnet at the end away from the sealing hole is the same as that of the corresponding end of the internal permanent magnet. The magnetic polarity of the external permanent magnet at the end near the sealing hole is opposite to that of the corresponding end of the internal permanent magnet. The magnetic polarities of the two external permanent magnets at opposite ends are the same.

[0012] The movable valve core is driven by magnetic attraction and magnetic repulsion to move towards the sealing hole so that the sealing profile faces the sealing hole and seals it; by setting two permanent magnets, under the action of the magnetic repulsion of one permanent magnet and the magnetic attraction of the other permanent magnet, the movable valve core can better seal the sealing hole.

[0013] The outer permanent magnet of this invention is provided with a coil. When the coil is energized, it generates a superimposed magnetic field. The movable valve core moves in the one-way valve housing through the cooperation of the inner and outer permanent magnets, so that the sealing contour faces the sealing hole of the one-way valve housing and seals it. The cooperation between the coil and the permanent magnet, through the electronic control coil, strengthens the magnetic field, which makes it easier for the movable valve core to seal the sealing hole better.

[0014] 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.

[0015] 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;

[0016] The internal permanent magnet is located inside the valve core housing.

[0017] 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.

[0018] 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.

[0019] 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.

[0020] 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;

[0021] 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.

[0022] The advantages of this utility model are: simple structure, no need for spring structure, applicable to highly corrosive fluid environments, high structural stability, and long service life. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the overall structure of the permanent magnet magnetically controlled one-way valve in Example 1.

[0024] Figure 2 This is the front view of the permanent magnet magnetically controlled one-way valve in Example 1.

[0025] Figure 3 yes Figure 2 Sectional view of AA (sealed condition).

[0026] Figure 4 yes Figure 2 Sectional view (AA) (open).

[0027] Figure 5 This is a cross-sectional view of the sealed state of the permanent magnet magnetically controlled one-way valve in Example 2.

[0028] Figure 6 This is a cross-sectional view of the sealed state of the permanent magnet magnetically controlled one-way valve in Example 3.

[0029] Figure 7 This is a cross-sectional view of the sealed state of the permanent magnet magnetically controlled one-way valve in Example 4.

[0030] Figure 8 This is a cross-sectional view of the sealed state of the permanent magnet magnetically controlled one-way valve in Example 5.

[0031] Figure 9 This is a cross-sectional view of the sealing state of the permanent magnet magnetically controlled one-way valve in Example 6.

[0032] Reference numerals: Upper coil-101, Upper permanent magnet-102, Upper permanent magnet N pole-1021, Upper permanent magnet S pole-1022;

[0033] Lower coil-201, lower permanent magnet-202, lower permanent magnet N pole-2021, lower permanent magnet S pole-2022;

[0034] 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;

[0035] Sealing ring-4, limiting boss-401;

[0036] Valve core housing - 501, sealing profile surface - 5011, inner permanent magnet N pole - 5021, inner permanent magnet S pole - 5022. Detailed Implementation

[0037] The present invention will now be described in conjunction with the accompanying drawings and embodiments.

[0038] Example 1:

[0039] As attached Figure 1-4 As shown, a permanent magnet magnetically controlled one-way valve includes a one-way valve housing 3, a movable valve core, and an external permanent magnet. 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 external permanent magnet is mounted on the one-way valve housing 3.

[0040] The movable valve core is provided with an inner permanent magnet and a sealing profile surface 5011. The inner permanent magnet cooperates with the outer permanent magnet to drive the movable valve core to move in the one-way valve housing 3 so that the sealing profile surface 5011 seals the sealing hole.

[0041] With its simple structure and lack of the need for springs, it is suitable for use in highly corrosive fluid environments, exhibits high structural stability, and has a long service life.

[0042] 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.

[0043] In this embodiment, there are two external permanent magnets. One of them is located away from the sealing hole, which is the upper permanent magnet 102 in this embodiment. The other is located near the sealing hole, which is the lower permanent magnet 202 in this embodiment. The magnetic polarity of the side of the upper permanent magnet 102 near the inner permanent magnet is the same as the magnetic polarity of the corresponding end of the inner permanent magnet. The magnetic polarity of the side of the lower permanent magnet near the inner permanent magnet is opposite to the magnetic polarity of the corresponding end of the inner permanent magnet. The magnetic polarities of the opposite ends of the two external permanent magnets are the same.

[0044] The movable valve core is driven by magnetic attraction and magnetic repulsion to move towards the sealing hole, so that the sealing profile surface 5011 seals the sealing hole; by setting two permanent magnets, under the action of the magnetic repulsion of one permanent magnet and the magnetic attraction of the other permanent magnet, the movable valve core can better seal the sealing hole.

[0045] 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.

[0046] This embodiment is as shown in the appendix. Figure 3 As shown, 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. The upper permanent magnet 102 has the N pole 1021 on its upper side and the S pole 1022 on its lower side. 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 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, are used to achieve the activation of the magnet. The moving valve core moves downward to seal the sealing hole; the polarity arrangement of the inner and outer permanent magnets is not limited to this, and can also be set such that the upper side of the inner permanent magnet is the inner permanent magnet N pole 5021 and the lower side is the inner permanent magnet S pole 5022, the upper side of the upper permanent magnet 102 is the upper permanent magnet S pole 1022 and the lower side is the upper permanent magnet N pole 1021, and the upper side of the lower permanent magnet 202 is the lower permanent magnet N pole 2021 and the lower side is the lower permanent magnet S pole 2022.

[0047] The outer diameter of the movable valve core 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 in the one-way valve housing 3.

[0048] 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.

[0049] 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.

[0050] The internal permanent magnet is located inside the valve core housing 501.

[0051] 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.

[0052] 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.

[0053] 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.

[0054] 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.

[0055] 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.

[0056] 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.

[0057] 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.

[0058] When this utility model is in use, the permanent magnet magnetically controlled one-way valve is normally closed, blocking the fluid. When the fluid pressure acts on the moving valve core and the thrust is greater than the magnetic force between the inner permanent magnet and the outer permanent magnet, the moving valve core is pushed upward, so that the sealing profile surface 5011 leaves the sealing hole position, and the fluid enters the housing cavity 303 from the lower inner through hole 30211 and flows out from the upper inner through hole 30111.

[0059] The fluid pressure can be set according to the actual usage scenario and the magnetic force between the inner and outer permanent magnets; the magnetic force can also be adjusted according to the fluid pressure in the actual usage scenario.

[0060] Example 2:

[0061] The difference between Example 2 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. The magnetic polarity of the side of the external permanent magnet closer to the internal permanent magnet is the same as the magnetic polarity of the corresponding end of the internal 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. The one-way valve is in a normally closed state through magnetic repulsion.

[0062] In this embodiment, the outer permanent magnet is an upper permanent magnet 102, as shown in the attached figure. Figure 5 As shown, the upper side of the inner permanent magnet can be set to the inner permanent magnet S pole 5022 and the lower side to the inner permanent magnet N pole 5021. The upper permanent magnet 102 has the upper permanent magnet N pole 1021 and the lower side to the upper permanent magnet S pole 1022. The magnetic repulsion between the upper permanent magnet and the inner permanent magnet enables the movable valve core to move downward to seal the sealing hole. The polarity arrangement of the inner and outer permanent magnets is not limited to this. The upper side of the inner permanent magnet can also be set to the inner permanent magnet N pole 5021 and the lower side to the inner permanent magnet S pole 5022. The upper permanent magnet 102 has the upper permanent magnet S pole 1022 and the lower side to the upper permanent magnet N pole 1021.

[0063] Example 3:

[0064] The difference between Example 3 and Example 2 is that a coil is provided on the outer permanent magnet. When the coil is energized, it generates a superimposed magnetic field. The movable valve core moves in the one-way valve housing 3 through the cooperation of the inner and outer permanent magnets, so that the sealing contour surface 5011 seals the sealing hole of the one-way valve housing 3. The cooperation between the coil and the permanent magnet strengthens the magnetic field through the electronically controlled coil, which makes it easier for the movable valve core to better seal the sealing hole.

[0065] In this embodiment, the outer permanent magnet is an upper permanent magnet 102, and an upper coil 101 is provided on the upper permanent magnet 102. The upper coil 101 can be wound on the upper permanent magnet 102 or fixed on the outside of the upper permanent magnet 102.

[0066] In this embodiment, when the direction of the magnetic field generated by the coil being energized is the same as the direction of the magnetic field of the permanent magnet, a superimposed magnetic field can be generated.

[0067] When this utility model is in use, the upper coil 101 is energized to generate a superimposed magnetic field, causing the sealing profile surface 5011 of the movable valve core to abut against the sealing ring 4, blocking the fluid. When fluid is needed to pass through, the upper coil 101 is de-energized, the magnetic force weakens, and when the thrust of the fluid pressure on the movable valve core is greater than the magnetic force between the inner permanent magnet and the outer permanent magnet, the movable valve core is pushed upward, causing the sealing profile 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.

[0068] Example 4:

[0069] The difference between Example 4 and Example 1 lies in the number of permanent magnets. The similarities will not be described in detail here. The outer permanent magnet is located at one end near the sealing hole. The magnetic polarity of the outer permanent magnet on the side 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 surface 5011 seals the sealing hole. The one-way valve is in a normally closed state by magnetic attraction.

[0070] In this embodiment, the outer permanent magnet is a lower permanent magnet 202. This embodiment is as shown in the attached diagram. Figure 7 As shown, 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. The upper side of the lower permanent magnet 202 can be set as the S pole 2022 and the lower side as the N pole 2021. The magnetic attraction between the lower permanent magnet 202 and the inner permanent magnet enables the movable valve core to move downward to seal the sealing hole. The polarity arrangement of the inner and outer permanent magnets is not limited to this. 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. The upper side of the lower permanent magnet 202 can be set as the N pole 2021 and the lower side as the S pole 2022.

[0071] Example 5:

[0072] The difference between Example 5 and Example 4 is that a coil is provided on the outer permanent magnet. When the coil is energized, it generates a superimposed magnetic field. The movable valve core moves in the one-way valve housing 3 through the cooperation of the inner and outer permanent magnets, so that the sealing contour surface 5011 seals the sealing hole of the one-way valve housing 3. The cooperation between the coil and the permanent magnet strengthens the magnetic field through the electronically controlled coil, which makes it easier for the movable valve core to better seal the sealing hole.

[0073] In this embodiment, the outer permanent magnet is a lower permanent magnet 202, and a lower coil 201 is provided on the lower permanent magnet 202. The lower coil 201 can be wound on the lower permanent magnet 202 or fixed on the outside of the lower permanent magnet 202.

[0074] In this embodiment, when the direction of the magnetic field generated by the coil being energized is the same as the direction of the magnetic field of the permanent magnet, a superimposed magnetic field can be generated.

[0075] When this utility model is in use, the lower coil 201 is energized to generate a superimposed magnetic field, causing the sealing profile surface 5011 of the movable valve core to abut against the sealing ring 4, blocking the fluid. When fluid is needed to pass through, the lower coil 201 is de-energized, the magnetic force weakens, and when the thrust of the fluid pressure on the movable valve core is greater than the magnetic force between the inner permanent magnet and the outer permanent magnet, the movable valve core is pushed upward, causing the sealing profile 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.

[0076] Example 6:

[0077] The difference between Example 6 and Example 1 is that coils are provided on both outer permanent magnets. An upper coil 101 is provided on the upper permanent magnet 102, and a lower coil 201 is provided on the lower permanent magnet 202. When the upper coil 101 is energized, it generates a superimposed magnetic field to enhance the magnetic repulsion force, and when the lower coil 201 is energized, it generates a superimposed magnetic field to enhance the magnetic attraction force. This causes the sealing profile surface 5011 of the movable valve core to abut against the sealing ring 4, blocking the fluid. When fluid is needed to pass through, the upper coil 101 and the lower coil 201 are de-energized, the magnetic force weakens, and when the thrust of the fluid pressure on the movable valve core is greater than the magnetic force between the inner and outer permanent magnets, it pushes the movable valve core upward, causing the sealing profile 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.

[0078] In this embodiment, when the direction of the magnetic field generated by the coil being energized is the same as the direction of the magnetic field of the permanent magnet, a superimposed magnetic field can be generated.

Claims

1. A permanent magnet controlled one-way valve, characterized in that: The device includes a one-way valve housing, a movable valve core, and an external permanent magnet. 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 external permanent magnet is mounted on the one-way valve housing. The movable valve core is provided with an inner permanent magnet and a sealing profile surface. The inner permanent magnet cooperates with the outer permanent magnet to drive the movable valve core to move in the one-way valve housing so that the sealing profile surface seals the sealing hole.

2. The permanent magnet controlled one-way valve according to claim 1, characterized in that: The outer permanent magnet is located at the end away from the sealing hole. 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. Alternatively, the outer permanent magnet may be located at one end near the sealing hole, and the magnetic polarity of the outer permanent magnet on the side near the inner permanent magnet may be opposite to the magnetic polarity of the corresponding end of the inner permanent magnet. The movable valve core may be driven by magnetic attraction to move toward the sealing hole so that the sealing contour faces the sealing hole for sealing.

3. A permanent magnet magnetically controlled one-way valve according to claim 1, characterized in that: Two external permanent magnets are provided, one of which is located away from the sealing hole and the other is located near the sealing hole. The magnetic polarity of the side of the external permanent magnet away from the sealing hole that is close to the inner permanent magnet is the same as the magnetic polarity of the corresponding end of the inner permanent magnet. The magnetic polarity of the side of the external permanent magnet close to the sealing hole that is close to the inner permanent magnet is opposite to the magnetic polarity of the corresponding end of the inner permanent magnet. The magnetic polarities of the opposite ends of the two external permanent magnets are the same. The movable valve core is driven by magnetic attraction and magnetic repulsion to move towards the sealing hole so that the sealing profile faces the sealing hole and seals.

4. A permanent magnet controlled one-way valve according to claim 1, 2, or 3, characterized in that: The outer permanent magnet is equipped with a coil. When the coil is energized, it generates a superimposed magnetic field. The inner permanent magnet and the outer permanent magnet cooperate to drive the movable valve core to move in the one-way valve housing so that the sealing contour faces the sealing hole of the one-way valve housing and seals it.

5. A permanent magnet controlled one-way valve according to claim 1, 2, or 3, characterized in that: The outer diameter of the movable valve core matches the inner diameter of the one-way valve housing.

6. A permanent magnet controlled one-way valve according to claim 1, 2, or 3, 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. A permanent magnet magnetically controlled 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. A permanent magnet magnetically controlled one-way valve according to claim 1, 2, 3, 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. A permanent magnet 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. A permanent magnet magnetically controlled one-way valve according to claim 1, 2, 3, 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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