A magnetic check ball valve

Abstract

The invention discloses a magnetic check ball valve, including a valve body with a valve cavity, a valve core, and a control device, wherein a horizontally penetrating valve core flow channel is provided in the valve core, and a check body installed in the valve core flow channel includes: a bracket installed in the valve core flow channel; a valve flap for opening or closing the valve core flow channel, the valve flap being composed of a left valve flap and a right valve flap; a connector installed at the bracket, the hinged end of the connector being respectively hingedly matched with the left valve flap and the right valve flap; a valve flap seat for sealing with the valve flap; a left magnet fixed at the left valve flap, and a right magnet fixed at the right valve flap; a left front magnet and a right front magnet for respectively driving the left magnet and the right magnet to rotate toward the rear port; and a left rear magnet and a right rear magnet for respectively driving the left magnet and the right magnet to rotate toward the front port. Since the cut-off and check functions are integrated, the pipeline volume is reduced, the installation difficulty is reduced, and the work efficiency is improved.

Description

Technical Field

[0001] The invention relates to a ball valve, in particular to a magnetic check ball valve. Background Art

[0002] The ball valve is mainly used to cut off, distribute and change the flow direction of the medium in the pipeline. It can be closed tightly by rotating 90 degrees and a very small torque. The ball valve controls its own flow channel through the ball valve opening and closing parts, and the ball valve opening and closing parts are cylindrical spheres with holes (ball flow channels). The valve core is controlled by the valve stem and rotates 0-90 degrees around the axis of the valve stem. The ball flow channel rotates with the valve core to achieve the purpose of opening and closing the ball valve.

[0003] Ball valves have many functions and are generally used in pipelines for switching or regulating media. At present, for traditional pipelines, ordinary valve control is generally used. This ball valve can only simply control the on and off of the water channel, but the backflow of the medium in the ball valve cannot be controlled. If the medium flows back, it will not only cause damage to the equipment, but also have a great impact on the user, resulting in reduced work efficiency and increased maintenance costs. In order to solve the backflow problem, most ball valves and check valves are used in conjunction to achieve the check function, but this greatly increases the volume of the pipeline and manufacturing costs. Summary of the invention

[0004] In order to overcome the deficiencies of the prior art, the present invention provides a magnetic check ball valve with a simple structure, low cost and a check effect.

[0005] The technical solution adopted by the present invention to solve the technical problem is: a magnetic check ball valve, including a valve body with a valve cavity, a valve core embedded in the valve cavity, and a control device connected to the valve core, the valve body is also provided with an inflow channel and an outflow channel matching the valve cavity, a horizontally through valve core flow channel is provided in the valve core, the valve core flow channel includes a front port close to the inflow channel, and a rear port close to the outflow channel, the control device is used to drive the valve core to rotate in the valve cavity to control the opening or closing of the magnetic check ball valve, and also includes a check body installed in the valve core flow channel, the check body includes:

[0006] A bracket installed in the flow channel of the valve core;

[0007] A valve disc that is consistent with the flow cross-section of the valve core and is used to open or close the flow passage of the valve core. The valve disc is composed of a left valve disc and a right valve disc;

[0008] A connecting piece installed at the bracket, the connecting piece includes a fixed end fixedly connected to the bracket, and a hinged end hingedly matched with the valve flap, the hinged end is located at the joint of the valve flap, and is hingedly matched with the left valve flap and the right valve flap respectively;

[0009] A valve disc seat located in the valve core flow channel and used to cooperate with the valve disc seal, and the valve disc seat is located on the side where the front port is located;

[0010] A left magnet fixed to the left valve disc, and a right magnet fixed to the right valve disc;

[0011] A left front magnet is provided near the front port in the valve core flow channel, which repels the left magnet and is used to drive the left magnet to rotate toward the rear port; a right front magnet is provided near the front port in the valve core flow channel, which repels the right magnet and is used to drive the right magnet to rotate toward the rear port;

[0012] A left rear magnet that repels the left magnet and is used to drive the left magnet to rotate toward the front port is provided near the rear port in the valve core flow channel, and a right rear magnet that repels the right magnet and is used to drive the right magnet to rotate toward the front port is also provided near the rear port in the valve core flow channel.

[0013] The beneficial effect of the present invention is that the valve core rotates in the valve cavity through the control device, thereby realizing the opening and closing of the check ball valve. The valve flap is divided into a left valve flap and a right valve flap, and the left valve flap and the right valve flap are installed in the valve core flow channel through the cooperation of a bracket and a connecting piece. The left valve flap and the right valve flap are respectively hinged to the hinged end of the connecting piece, and the left valve flap and the right valve flap will press against or move away from the valve flap seat when rotating around the hinge axis. When the left valve flap and the right valve flap press against the valve flap seat, the valve core flow channel is closed; when the left valve flap and the right valve flap move away from the valve flap seat, the valve core flow channel is opened. Therefore, if the liquid flows from the front port to the rear port (this state is downstream), the impact of the liquid will open the left valve flap and the right valve flap, so that the valve core flow channel is opened; if the liquid flows back, that is, flows from the rear port to the front port (this state is countercurrent), the liquid will carry the left valve flap and the right valve flap to rotate around the hinge shaft and press against the valve flap seat. The left valve flap and the right valve flap cooperate with the valve flap seat to close the valve core flow channel, thereby preventing the backflow from occurring. The present invention has the functions of a check valve and a stop valve, can effectively improve product performance and control the problem of medium backflow in the valve, and reduces maintenance costs and manufacturing costs. Since the stop and check functions are integrated, the pipeline volume is reduced, the installation difficulty is reduced, and the work efficiency is improved. The check function is mainly realized by magnetic force, and after the check function is used, it can be reset under the action of magnetic force. Compared with the traditional check valve, the reset operation is omitted, which is more convenient. When the flow is downstream, the check body rotates around the hinge axis under the action of fluid pressure and becomes horizontal, thereby reducing the resistance area and the obstruction to the fluid. By adjusting the position of the left front magnet and the left rear magnet relative to the left magnet, or adjusting the magnetic force of each magnet, the opening of the left valve disc can be adjusted. Here, the opening refers to the opening angle of the left valve disc relative to the valve disc seat; the relationship between the right front magnet, the right rear magnet and the right magnet is similar.

[0014] The valve disc is circular, and the splicing line used to separate the left and right valve discs on the valve disc is a straight line, which runs through the center of the valve disc. The splicing line runs through the center of the valve disc, which is not only conducive to the production of the left and right valve discs, but also convenient for the opening and closing of the valve disc. At the same time, the left-right symmetrical structure of the left and right valve discs can ensure that the opening and closing are consistent, avoiding internal loss or uneven loss caused by different pressures on both sides.

[0015] The connector also includes an intermediate body fixed to the hinged end, the intermediate body is in the shape of a long strip, the intermediate body and the valve disc are located on the same plane, and the length of the intermediate body is adapted to the inner diameter of the valve core flow channel, the left valve disc and the right valve disc are respectively located on both sides of the intermediate body and are hinged with the intermediate body. The left valve disc and the right valve disc are hinged with the connector through the intermediate body, which not only facilitates the installation of the valve disc and the connector, but also can be used as an installation base to ensure the stability of the left valve disc and the right valve disc when working.

[0016] The valve seat, the left front magnet and the right front magnet are an annular convex edge of an integrated structure, which is arranged along the circumference of the valve core flow channel and is made of magnetic material. The overall structure is optimized, and the various components are integrated into one, which reduces space occupation and reduces manufacturing costs.

[0017] The connecting piece, the left rear magnet and the right rear magnet are a connecting rod of an integrated structure, and the connecting rod is made of magnetic material. The overall structure is optimized, and various components are integrated into one, which reduces space occupation and reduces manufacturing costs.

[0018] The left valve flap and the left magnet are an integrated structure, and the right valve flap and the right magnet are an integrated structure. The overall structure is optimized, and the various components are integrated into one, which reduces space occupation and reduces manufacturing costs.

[0019] It is further preferred that the bracket includes a positioning ring clamped in the valve core flow channel, and a positioning frame fixed in the positioning ring, and the fixed end of the connecting member is fixedly connected to the positioning frame.

[0020] In order to maximize the magnetic repulsion between the left and right magnets and the left front magnet, right front magnet, left rear magnet, and right rear magnet, the valve disc is circular, the left magnet is located in the arc part of the left valve disc, and the right magnet is located in the arc part of the right valve disc, so as to improve the effect of magnetic action.

[0021] The bracket is clamped in the valve core flow channel and is detachably connected with the valve core flow channel. The check body and the ball can be disassembled. When the check function is not required, the check body can be removed, thereby reducing the flow resistance of the check body to the ball medium.

[0022] The magnetic force between the left magnet and the left rear magnet is smaller than the magnetic force between the left magnet and the left front magnet; the magnetic force between the right magnet and the right rear magnet is smaller than the magnetic force between the right magnet and the right front magnet. Among them, the magnetic force between the left magnet and the left rear magnet, and the magnetic force between the right magnet and the right rear magnet are both weak, as long as it can be ensured that the left valve flap and the right valve flap will not completely fit together, thereby improving the sensitivity of the valve flap in preventing backflow.

[0023] The technical solution adopted by the present invention to solve the technical problem is: a magnetic check ball valve, including a valve body with a valve cavity, a valve core embedded in the valve cavity, and a control device connected to the valve core, the valve body is also provided with an inflow channel and an outflow channel matching the valve cavity, a horizontally through valve core flow channel is provided in the valve core, the valve core flow channel includes a front port close to the inflow channel, and a rear port close to the outflow channel, the control device is used to drive the valve core to rotate in the valve cavity to control the opening or closing of the magnetic check ball valve, and also includes a check body installed in the valve core flow channel, the check body includes:

[0024] A bracket installed in the flow channel of the valve core;

[0025] A valve disc that is consistent with the flow cross-section of the valve core and is used to open or close the flow passage of the valve core. The valve disc is composed of a left valve disc and a right valve disc;

[0026] A connecting piece installed at the bracket, the connecting piece includes a fixed end fixedly connected to the bracket, and a hinged end hingedly matched with the valve flap, the hinged end is located at the joint of the valve flap, and is hingedly matched with the left valve flap and the right valve flap respectively;

[0027] A valve disc seat located in the valve core flow channel and used to cooperate with the valve disc seal, and the valve disc seat is located on the side where the front port is located;

[0028] A left magnet fixed to the left valve flap, and a right magnet fixed to the right valve flap and repelling the left magnet;

[0029] A left front magnet is provided near the front port in the valve core flow channel, which repels the left magnet and is used to drive the left magnet to rotate toward the rear port. A right front magnet is provided near the front port in the valve core flow channel, which repels the right magnet and is used to drive the right magnet to rotate toward the rear port.

[0030] The beneficial effect of the present invention is that since the left magnet and the right magnet repel each other, the two valve flaps can never fit together through the action of the mutually repelling left magnet and the right magnet, and can only be as close as possible under the action of overcoming the repulsive force. Here, the left magnet and the right magnet repel each other, which means that the N level of the left magnet and the N level of the right magnet are arranged opposite to each other, and the S level of the left magnet and the S level of the right magnet are arranged opposite to each other. Therefore, when the left valve flap and the right valve flap rotate around the hinge axis and have a tendency to fit each other, the left magnet and the right magnet will prevent the two valve flaps from fitting together, so that the two valve flaps are always in an angle state (that is, a certain tension is generated), thereby ensuring that the left valve flap and the right valve flap will not fit completely together, thereby improving the sensitivity of the valve flap in preventing backflow. The overall structure is simple, the left rear magnet and the right rear magnet are omitted, the structure is optimized, the cost is saved, and the backflow prevention effect is not affected.

[0031] It is further preferred that the valve flap is circular, and a splicing line on the valve flap for dividing the left valve flap and the right valve flap is a straight line, and the splicing line runs through the center of the valve flap.

[0032] It is further preferred that the valve flap seat, the left front magnet and the right front magnet are an annular convex edge of an integral structure, the annular convex edge is arranged along the circumference of the valve core flow channel, and the annular convex edge is made of magnetic material; the left valve flap and the left magnet are an integral structure, and the right valve flap and the right magnet are an integral structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 It is a cross-sectional view of the first embodiment of the present invention.

[0034] Figure 2 It is a schematic diagram of the internal structure of the first embodiment of the present invention.

[0035] Figure 3 It is a schematic structural diagram of a non-return body according to an embodiment of the present invention.

[0036] Figure 4 It is a schematic structural diagram of the anti-return body according to the second embodiment of the present invention. DETAILED DESCRIPTION

[0037] The present invention will be further described below in conjunction with the accompanying drawings:

[0038] Embodiment 1: Figure 1 , 2As shown in Figure 3, this embodiment includes a valve body 1 with a valve cavity 11, a valve core 2 (also called a ball) embedded in the valve cavity 11, and a control device 3 connected to the valve core 2. The valve body 1 is also provided with an inflow channel 12 and an outflow channel 13 that match the valve cavity 11. The valve core 2 is provided with a horizontally penetrating, circular valve core channel 21. The valve core channel 21 includes a front port 211 close to the inflow channel 12 and a rear port 212 close to the outflow channel 13. The control device 3 is used to drive the valve core 2 to rotate in the valve cavity 11 to control the opening or closing of the valve cavity 11. Here, the control device 3 is a valve stem 31 and a handle 32. The valve stem 31 and the valve core 32 are linked. The valve stem 32 is driven to rotate by the handle 31, and then the valve core 2 is driven to rotate in the valve cavity 11, thereby controlling the opening or closing of this embodiment. Among them, the control device 3 belongs to a conventional ball valve control structure, so it will not be described here. If the liquid flows from the front port 211 to the rear port 212, this state is downstream; if the liquid flows from the rear port 212 to the front port 211, this state is upstream.

[0039] A check body 4 is also installed in the valve core flow channel 21. The check body 4 includes a bracket 41 installed in the valve core flow channel 21, a connecting piece 42, a valve disc seat 43, and a valve disc 44 sealed with the valve disc seat 43. The bracket 41 includes a positioning ring 411 clamped in the valve core flow channel 21 and a positioning frame 412 fixed in the positioning ring 411. The connecting piece 42 is a long rod-shaped structure. The connecting rod 42 is coaxially arranged with the valve core flow channel 21. The connecting rod 42 includes a fixed end 421 fixedly connected to the positioning frame 412 and a hinged end 422 hingedly matched with the valve disc 44. The valve disc 44 has the same cross-sectional size as the valve core flow channel 21 and is used to open or close the valve core flow channel 21. The valve disc 44 is spliced ​​by a left valve disc 441 and a right valve disc 442. The splicing line between the left valve disc 441 and the right valve disc 442 is a straight line, and the splicing line runs through the center of the valve disc 44. The left valve flap 441 and the right valve flap 442 are respectively hinged to the hinge end 422 (such as Figure 1 and Figure 2 When the left valve flap 441 and the right valve flap 442 rotate around the hinge axis, if the left valve flap 441 and the right valve flap 442 abut against the valve flap seat 43, the surfaces of the left valve flap 441 and the right valve flap 442 respectively press against the periphery of the valve flap seat 43, thereby blocking the passage of the reflux liquid, that is, the valve flap 44 closes the valve core flow channel 21, and the valve core flow channel 21 is closed at the valve flap seat 43 (as shown in FIG. Figures 1 to 3The valve seat 43 is located at the side where the front port 211 is located, and the valve flap 44 is located at the other side. Therefore, when the flow is downstream, the fluid can push the left valve flap 441 and the right valve flap 442 to rotate and move away from the valve flap seat 43. At this time, the valve flap seat 43 does not interfere with the rotation of the left valve flap 441 and the right valve flap 442. When the flow is upstream, the fluid will push the left valve flap 441 and the right valve flap 442 to rotate and abut against the valve flap seat 43. At this time, the valve flap 44 and the valve flap seat 43 are sealed. A left magnet 451 is fixed to the left valve flap 441, and a right magnet 452 is fixed to the right valve flap 442. A left front magnet 461 is provided near the front port 211 in the valve core flow channel 21, which repels the left magnet 451 and is used to drive the left magnet 451 to rotate toward the rear port 212. A right front magnet 462 is provided near the front port 211 in the valve core flow channel 21, which repels the right magnet 452 and is used to drive the right magnet 452 to rotate toward the rear port 212. A left rear magnet 471 is provided near the rear port 212 in the valve core flow channel 21, which repels the left magnet 451 and is used to drive the left magnet 451 to rotate toward the front port 211. A right rear magnet 472 is also provided near the rear port 212 in the valve core flow channel 21, which repels the right magnet 452 and is used to drive the right magnet 452 to rotate toward the front port 211.

[0040] The connecting member 42 further includes an intermediate body 423 fixed to the hinged end 422. The intermediate body 423 is in the shape of an elongated strip. The intermediate body 423 and the valve flap 44 are located on the same plane. The length of the intermediate body 423 matches the inner diameter of the valve core flow channel 21. The left valve flap 441 and the right valve flap 442 are respectively located on both sides of the intermediate body 423 and are hingedly matched with the intermediate body 423. The left valve flap 441 and the right valve flap 442 are hingedly connected to the connecting member 42 through the intermediate body 423. The positioning ring 411 on the bracket 41 is clamped in the valve core flow channel 21 and is detachably connected with the valve core flow channel 21.

[0041] In addition to the above-mentioned schemes, this embodiment can also be optimized in design, including the following optimization schemes. For example, in optimization scheme 1, the valve flap seat 43, the left front magnet 461 and the right front magnet 462 are an annular convex edge of an integral structure, which is arranged along the circumference of the valve core flow channel 21, and the annular convex edge is made of magnetic material. In optimization scheme 2, the connecting piece 42, the left rear magnet 471 and the right rear magnet 472 are a connecting rod of an integral structure, and the connecting rod is made of magnetic material. In optimization scheme 3, the left valve flap 441 and the left magnet 451 are an integral structure, and the right valve flap 442 and the right magnet 452 are an integral structure. In optimization scheme 4, the left magnet 451 is located at the arc part of the left valve flap 441, and the right magnet 452 is located at the arc part of the right valve flap 442. Optimization schemes 1 to 4 can be combined with each other, or they can be combined with embodiment 1 alone. That is, this application includes embodiments brought about by multiple optimization schemes, and the difference between the multiple embodiments is only the difference brought about by the selection or combination of the optimization schemes.

[0042] In the present invention, the magnetic check ball valve has the functions of a check valve and a stop valve, which can effectively improve product performance and control the problem of medium backflow in the valve, reducing maintenance costs and manufacturing costs. Since the stop and check functions are integrated into one, the pipeline volume is reduced, the installation difficulty is reduced, and the work efficiency is improved. The check function is mainly realized by magnetic force, and after the check function is used, it can be reset under the action of magnetic force. Compared with the traditional check valve, the reset operation is omitted, which is more convenient. When flowing downstream, the check body rotates around the hinge shaft under the action of fluid pressure and becomes horizontal, thereby reducing the resistance area and the obstruction to the fluid. By adjusting the positions of the left front magnet 461 and the left rear magnet 471 relative to the left magnet 451, or adjusting the magnetic force of each magnet, the opening of the left valve flap 441 can be adjusted. The opening here refers to the opening angle of the left valve flap 441 relative to the valve flap seat 43; the relationship between the right front magnet 462, the right rear magnet 472, the right magnet 452 and the right valve flap 442 is the same.

[0043] Embodiment 2: Figure 4 As shown, the difference from Example 1 lies in that the left rear magnet 471 and the right rear magnet 472 are omitted, and the left magnet 451 and the right magnet 452 repel each other, that is, the N level of the left magnet 451 and the N level of the right magnet 452 are arranged opposite to each other, and the S level of the left magnet 451 and the S level of the right magnet 452 are arranged opposite to each other. Therefore, when the left valve flap 441 and the right valve flap 442 rotate around the hinge axis and have a tendency to stick to each other, the left magnet 451 and the right magnet 452 will prevent the left valve flap 441 and the right valve flap 442 from sticking together, so that the left valve flap 441 and the right valve flap 442 are always in an angle state (that is, a certain tension is generated), thereby ensuring that the left valve flap 441 and the right valve flap 442 will not completely stick together, thereby improving the sensitivity of the valve flap 44 in preventing backflow.

[0044] In this embodiment, the valve flap 44 is further defined as a circle, and the splicing line on the valve flap 44 for dividing the left valve flap 441 and the right valve flap 442 is a straight line, and the splicing line runs through the center of the valve flap 44. The valve flap seat 43, the left front magnet 461 and the right front magnet 462 are an annular convex edge of an integral structure, and the annular convex edge is arranged along the circumference of the valve core flow channel 21, and the annular convex edge is made of magnetic material; the left valve flap 441 and the left magnet 451 are an integral structure, and the right valve flap 442 and the right magnet 452 are an integral structure.

Claims

1. A magnetic check ball valve, comprising a valve body with a valve cavity, a valve core embedded in the valve cavity, and a control device connected to the valve core, the valve body is also provided with an inflow channel and an outflow channel matching the valve cavity, a horizontally penetrating valve core channel is provided in the valve core, the valve core channel includes a front port close to the inflow channel, and a rear port close to the outflow channel, the control device is used to drive the valve core to rotate in the valve cavity to control the opening or closing of the magnetic check ball valve, and is characterized in that: Also included is a check body installed in the valve core flow channel, the check body comprising: A bracket installed in the flow channel of the valve core; A valve disc that is consistent with the flow cross-section of the valve core and is used to open or close the flow passage of the valve core. The valve disc is composed of a left valve disc and a right valve disc; A connecting piece installed at the bracket, the connecting piece includes a fixed end fixedly connected to the bracket, and a hinged end hingedly matched with the valve flap, the hinged end is located at the joint of the valve flap, and is hingedly matched with the left valve flap and the right valve flap respectively; A valve disc seat located in the valve core flow channel and used to cooperate with the valve disc seal, and the valve disc seat is located on the side where the front port is located; A left magnet fixed to the left valve disc, and a right magnet fixed to the right valve disc; A left front magnet is provided near the front port in the valve core flow channel, which repels the left magnet and is used to drive the left magnet to rotate toward the rear port; a right front magnet is provided near the front port in the valve core flow channel, which repels the right magnet and is used to drive the right magnet to rotate toward the rear port; A left rear magnet is provided near the rear port in the valve core flow channel, which repels the left magnet and is used to drive the left magnet to rotate toward the front port. A right rear magnet is also provided near the rear port in the valve core flow channel, which repels the right magnet and is used to drive the right magnet to rotate toward the front port. The magnetic force between the left magnet and the left rear magnet is smaller than the magnetic force between the left magnet and the left front magnet; the magnetic force between the right magnet and the right rear magnet is smaller than the magnetic force between the right magnet and the right front magnet.

2. The magnetic check ball valve according to claim 1 is characterized in that: The valve flap is circular, and a splicing line on the valve flap for dividing the left valve flap and the right valve flap is a straight line, and the splicing line runs through the center of the valve flap.

3. The magnetic check ball valve according to claim 2 is characterized in that: The connecting piece also includes an intermediate body fixed to the hinged end, which is in the shape of an elongated strip. The intermediate body and the valve flap are located on the same plane, and the length of the intermediate body is adapted to the inner diameter of the valve core flow channel. The left valve flap and the right valve flap are respectively located on both sides of the intermediate body and are hingedly matched with the intermediate body.

4. The magnetic check ball valve according to claim 1 is characterized in that: The valve disc seat, the left front magnet and the right front magnet form an annular convex edge of an integrated structure. The annular convex edge is arranged along the circumference of the valve core flow channel and is made of magnetic material.

5. The magnetic check ball valve according to claim 1 is characterized in that: The connecting piece, the left rear magnet and the right rear magnet are a connecting rod of an integrated structure, and the connecting rod is made of magnetic material.

6. The magnetic check ball valve according to claim 1, characterized in that: The left valve flap and the left magnet are an integrated structure, and the right valve flap and the right magnet are an integrated structure.

7. A magnetic check ball valve, comprising a valve body with a valve cavity, a valve core embedded in the valve cavity, and a control device connected to the valve core, the valve body is also provided with an inflow channel and an outflow channel matching the valve cavity, a horizontally penetrating valve core channel is provided in the valve core, the valve core channel includes a front port close to the inflow channel, and a rear port close to the outflow channel, the control device is used to drive the valve core to rotate in the valve cavity to control the opening or closing of the magnetic check ball valve, and is characterized in that: Also included is a check body installed in the valve core flow channel, the check body comprising: A bracket installed in the flow channel of the valve core; A valve disc that is consistent with the flow cross-section of the valve core and is used to open or close the flow passage of the valve core. The valve disc is composed of a left valve disc and a right valve disc; A connecting piece installed at the bracket, the connecting piece includes a fixed end fixedly connected to the bracket, and a hinged end hingedly matched with the valve flap, the hinged end is located at the joint of the valve flap, and is hingedly matched with the left valve flap and the right valve flap respectively; A valve disc seat located in the valve core flow channel and used to cooperate with the valve disc seal, and the valve disc seat is located on the side where the front port is located; A left magnet fixed to the left valve flap, and a right magnet fixed to the right valve flap and repelling the left magnet; A left front magnet is provided near the front port in the valve core flow channel, which repels the left magnet and is used to drive the left magnet to rotate toward the rear port; a right front magnet is provided near the front port in the valve core flow channel, which repels the right magnet and is used to drive the right magnet to rotate toward the rear port; The magnetic force between the left magnet and the left rear magnet is smaller than the magnetic force between the left magnet and the left front magnet; the magnetic force between the right magnet and the right rear magnet is smaller than the magnetic force between the right magnet and the right front magnet.

8. The magnetic check ball valve according to claim 7, characterized in that: The valve flap is circular, and a splicing line on the valve flap for dividing the left valve flap and the right valve flap is a straight line, and the splicing line runs through the center of the valve flap.

9. The magnetic check ball valve according to claim 7, characterized in that: The valve flap seat, the left front magnet and the right front magnet are an annular convex edge of an integrated structure, the annular convex edge is arranged along the circumference of the valve core flow channel, and the annular convex edge is made of magnetic material; the left valve flap and the left magnet are an integrated structure, and the right valve flap and the right magnet are an integrated structure.

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