Electromagnetic ball valve and valve control system
By introducing an inductive stroke sensor into the solenoid ball valve, the valve core position is monitored in real time and the signal is triggered, the problem of the inability to detect the valve core working position in the prior art is solved, and the equipment safety protection is achieved.
Patent Information
- Application Number
- CN202421987563.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-15
- Publication Date
- 2025-06-24
- Estimated Expiration
- 2034-08-15
AI Technical Summary
The existing solenoid ball valve cannot detect the working position of the valve core in real time during the reversing operation, resulting in the inability to warning when the valve core is not working properly, which may cause equipment damage or personal injury.
A solenoid ball valve is designed, including a solenoid, push rod, valve body, valve core and induction stroke sensor. The inductive stroke sensor monitors the position of the valve core in real time through the electromagnetic induction principle of the detection end and the induction part, and triggers the signal when the valve core reaches the target position.
Through real-time monitoring and signal triggering of inductive stroke sensors, the valve core position status can be effectively obtained, prevent equipment damage and personal injury caused by the valve core not moving normally, and ensure system safety.
Smart Images
Figure CN223019595U_ABST
Abstract
Description
Technical Field
[0001] The present disclosure relates to the field of hydraulic equipment, and more precisely, to an electromagnetic ball valve. Background Art
[0002] During the commutation operation of a conventional electromagnetic ball valve, since the working position of the valve core cannot be determined and detected, when the valve core malfunctions, without detection and early warning, the subsequent logic control continues to execute according to the instructions, which is very likely to cause equipment damage and even may cause personal injury by the equipment, affecting the user's safety in use. Summary of the Utility Model
[0003] The present disclosure provides an electromagnetic ball valve and a valve control system to solve the problems existing in the prior art.
[0004] According to a first aspect of the present disclosure, there is provided an electromagnetic ball valve, including an electromagnet, a push rod, a valve body, a valve core, and an inductive stroke sensor;
[0005] The electromagnet is configured to be disposed outside the first end of the valve body. The push rod is disposed at the first end within the valve body and is configured to move under the control of the movement of the output end of the electromagnet, so as to drive the valve core to move at least between a first position and a second position along the extending direction of the valve body within the valve body;
[0006] The inductive stroke sensor is disposed at the second end of the valve body and includes a detection end and an induction part. The detection end is configured to move along the extending direction of the valve body with the valve core, and the induction part is configured to trigger a signal at least when the detection end is at the first position or the second position.
[0007] In an embodiment of the present disclosure, one of the detection end and the induction part is a coil, and the other is a magnet. The inductive stroke sensor is configured to obtain the position of the detection end by acquiring the electromagnetic induction electromotive force between the coil and the magnet.
[0008] In an embodiment of the present disclosure, the inductive stroke sensor includes a pressure-resistant part and a feedback part. The pressure-resistant part and the feedback part are configured to be slidably connected relatively, and both the detection end and the induction part are located in the installation cavity surrounded by the pressure-resistant part and the feedback part. The detection end is disposed within the pressure-resistant part, and the induction part is disposed on the feedback part.
[0009] In an embodiment of the present disclosure, a detection rod is further included. The detection rod abuts against the second end of the valve core and is configured to abut against the pressure-resistant part to drive the detection end to move.
[0010] In one embodiment of the present disclosure, the detection rod includes a rod body and an abutting portion provided at the first end of the rod body. The abutting portion is configured to abut against the valve core, and the rod body is configured to cooperate with the detection end to drive the detection end to move.
[0011] In one embodiment of the present disclosure, a screw hole is provided on the abutting portion, and a thread adapted to the screw hole is provided at the first end of the rod body; a locking nut is further provided on the detection rod. The locking nut is provided on the rod body and abuts against the abutting portion to tightly screw the abutting portion and the rod body together.
[0012] In one embodiment of the present disclosure, it further includes an end plug and a return spring. The end plug is fixedly provided outside the second end of the valve body and is fixedly connected to the inductive stroke sensor;
[0013] The first end of the return spring abuts against the locking nut of the detection rod, and the second end is configured to abut against the wall of the second end of the inner cavity formed by the end plug and the valve body.
[0014] In one embodiment of the present disclosure, in the inner cavity of the valve core, a first passage is provided at a position on the first side of the valve core, and a second passage is provided at a position on the second side of the valve core. A third passage is provided on the inner cavity of the valve body corresponding to the position of the valve core;
[0015] When the valve core is configured to be in the first position, the first passage is disconnected from the third passage, and when it is in the second position, the second passage is disconnected from the third passage.
[0016] In one embodiment of the present disclosure, the valve core is configured to be spherical;
[0017] A first sharp-corner portion is provided adjacent to the first side of the valve core, and a second sharp-corner portion is provided adjacent to the second side of the valve core. The valve core is configured to abut against the first sharp-corner portion to disconnect the first passage from the third passage; when in the second position, it abuts against the second sharp-corner portion to disconnect the second passage from the third passage.
[0018] According to the second aspect of the present disclosure, a valve control system is provided, including the electromagnetic ball valve and a control unit; the control unit is configured to control the valve core to move to a target position through the electromagnet, obtain the trigger signal of the inductive stroke sensor to determine whether the valve core has moved to the target position, and issue a movement error signal in the case where the valve core has not moved to the target position.
[0019] The present disclosure provides an electromagnetic ball valve, which at least includes an electromagnet, a push rod, a valve body, a valve core and an inductive stroke sensor; the electromagnet is configured to be disposed outside the first end of the valve body, the push rod is disposed at the first end inside the valve body, and is configured to move under the control of the movement of the output end of the electromagnet, so as to drive the valve core to move at least between a first position and a second position along the extending direction of the valve body inside the valve body; the inductive stroke sensor is disposed at the second end of the valve body, and includes a detection end and an induction part, the detection end is configured to move along the extending direction of the valve body with the valve core, and the induction part is configured to trigger a signal at least when the detection end is at the first position or the second position.
[0020] During the working process of the electromagnetic ball valve of the present disclosure, when the output end of the electromagnet moves, it can drive the push rod to move, and then drive the valve core to move at least between a first position and a second position along the extending direction of the valve body inside the valve body through the push rod. The detection end of the inductive stroke sensor can move along the extending direction of the valve body with the valve core, and the induction part triggers a signal at least when the detection end is at the first position or the second position.
[0021] In this way, the electromagnetic ball valve of the present disclosure can effectively obtain the position state of the valve core by using the inductive stroke sensor, so that it is convenient for the control unit to control through the position state of the valve core, playing a role in protecting the safety of the system.
[0022] Specifically, after the electromagnet in the electromagnetic ball valve of the present disclosure is energized, it drives the valve core to move towards the target position inside the valve body through the push rod. After the valve core moves to the target position, it can effectively trigger the inductive stroke sensor to send out a corresponding signal to indicate that the valve core reaches the target position, facilitating the subsequent control logic to continue; and when the valve core does not move to the target position normally, or the inductive stroke sensor does not detect that the valve core reaches the target position, the inductive stroke sensor will not send out a corresponding signal, and the subsequent control logic will not continue, achieving the effect of ensuring the safety of the equipment.
[0023] For example, when the electromagnetic ball valve of the present disclosure is applied to various equipment such as safety doors, safety valves, and reversing valves, it can ensure that the equipment operates normally only when the safety door and the safety valve are closed, avoiding subsequent operations by the staff when the equipment has not completed the switching operation normally, resulting in equipment damage or even personal injury.
[0024] Through the following detailed description of the exemplary embodiments of the present disclosure with reference to the accompanying drawings, other features and advantages of the present disclosure will become clear. BRIEF DESCRIPTION OF THE DRAWINGS
[0025] The drawings incorporated in the specification and constituting a part of the specification illustrate embodiments of the present disclosure and, together with the description, are used to explain the principles of the present disclosure.
[0026] Figure 1It is a cross-sectional structure diagram of the electromagnetic ball valve provided by an embodiment of the present disclosure;
[0027] Figure 2 It is a cross-sectional view of the inductive stroke sensor provided by an embodiment of the present disclosure;
[0028] Figure 3 It is a partial cross-sectional structure diagram of the detection rod provided by an embodiment of the present disclosure.
[0029] Figures 1 to 3 The corresponding relationship between the names of the components and the reference numerals in the figure is as follows:
[0030] 10. Electromagnet; 20. Push rod; 30. Valve body; 31. First sharp corner part; 32. Second sharp corner part; 40. Valve core; 50. Inductive stroke sensor; 51. Detection end; 52. Inductive part; 53. Pressure-resistant part; 54. Feedback part; 55. Installation cavity; 60. Detection rod; 61. Abutting part; 62. Rod body; 63. Locking nut; 70. Return spring. 81. First passage; 82. Second passage; 83. Third passage; 90. End plug. A: First end; B: Second end. Detailed implementation manners
[0031] Now, various exemplary embodiments of the present disclosure will be described in detail with reference to the accompanying drawings. It should be noted that: unless otherwise specifically stated, the relative arrangements of components and steps, numerical expressions and values set forth in these embodiments do not limit the scope of the present disclosure. In all the examples shown and discussed here, any specific value should be construed as merely exemplary, rather than as a limitation. Therefore, other examples of the exemplary embodiments may have different values.
[0032] Many specific details are set forth in the following description in order to provide a thorough understanding of the present disclosure. However, the present disclosure can be implemented in many other ways different from those described herein, and those skilled in the art can make similar generalizations without departing from the spirit of the present disclosure. Therefore, the present disclosure is not limited by the specific implementations disclosed below. Technologies, methods, and devices known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, the said technologies, methods, and devices should be regarded as part of the specification.
[0033] The terms used in one or more embodiments of the present disclosure are only for the purpose of describing specific embodiments, and are not intended to limit one or more embodiments of the present disclosure. The singular forms "a", "the", and "said" used in one or more embodiments of the present disclosure and the appended claims are also intended to include the plural forms, unless the context clearly indicates otherwise. It should also be understood that the term "and / or" used in one or more embodiments of the present disclosure refers to and includes any or all possible combinations of one or more of the associated listed items.
[0034] It should be understood that although the terms first, second, etc. may be used in one or more embodiments of the present disclosure to describe various information, such information should not be limited to these terms. These terms are only used to distinguish information of the same type from each other. For example, without departing from the scope of one or more embodiments of the present disclosure, the first may also be referred to as the second, and similarly, the second may also be referred to as the first. Depending on the context, the word "if" as used herein may be interpreted as "when" or "while" or "in response to determining". In this document, "upper", "lower", "front", "rear", "left", "right", etc. are only used to represent the relative positional relationship between relevant parts, rather than defining the absolute positions of these relevant parts. In this document, "equal", "same", etc. are not strict mathematical and / or geometric limitations, and also include errors that can be understood by those skilled in the art and are allowed in manufacturing or using, etc. Unless otherwise specified, the numerical ranges in this document include not only the entire range within its two endpoints, but also several sub-ranges included therein.
[0035] The present disclosure provides an electromagnetic ball valve, which at least includes an electromagnet, a push rod, a valve body, a valve core, and an inductive stroke sensor; the electromagnet is configured to be disposed outside the first end of the valve body, the push rod is disposed at the first end inside the valve body, and is configured to move under the control of the movement of the output end of the electromagnet, so as to drive the valve core to move at least between a first position and a second position along the extending direction of the valve body inside the valve body; the inductive stroke sensor is disposed at the second end of the valve body, and includes a detection end and an induction part, the detection end is configured to move along the extending direction of the valve body with the valve core, and the induction part is configured to trigger a signal at least when the detection end is at the first position or the second position.
[0036] During the working process of the electromagnetic ball valve of the present disclosure, when the output end of the electromagnet moves, it can drive the push rod to move, and then drive the valve core to move at least between a first position and a second position along the extending direction of the valve body inside the valve body. The detection end of the inductive stroke sensor can move along the extending direction of the valve body with the valve core, and the induction part triggers a signal at least when the detection end is at the first position or the second position.
[0037] In this way, the electromagnetic ball valve of the present disclosure can effectively obtain the position state of the valve core by using the inductive stroke sensor, so as to facilitate the control unit to control through the position state of the valve core, and play a role in protecting the safety of the system.
[0038] Specifically, after the electromagnet in the electromagnetic ball valve of the present disclosure is energized, the push rod drives the valve core to move in the valve body towards the target position. After the valve core moves to the target position, it can effectively trigger the inductive stroke sensor to send a corresponding signal to indicate that the valve core has reached the target position, facilitating the subsequent control logic to continue; while when the valve core does not move to the target position normally, or the inductive stroke sensor does not detect that the valve core has reached the target position, the inductive stroke sensor will not send a corresponding signal, and the subsequent control logic will not continue, achieving the effect of ensuring the safety of the equipment.
[0039] For example, when the electromagnetic ball valve of the present disclosure is applied to various equipment such as safety doors, safety valves, and reversing valves, it can ensure that the equipment operates normally only when the safety door and safety valve are closed, preventing staff from performing subsequent operations when the equipment has not completed the switching operation properly, resulting in equipment damage or even personal injury.
[0040] For ease of understanding, the following refers to Figures 1 to 3 , and in combination with an embodiment, the specific structure and working principle of the electromagnetic ball valve of the present disclosure will be described in detail.
[0041] As Figures 1 to 3 shown, the present disclosure provides an electromagnetic ball valve, which at least includes an electromagnet 10, a push rod 20, a valve body 30, a valve core 40, and an inductive stroke sensor 50; the electromagnet 10 is configured to be disposed outside the first end of the valve body 30, the push rod 20 is disposed at the first end inside the valve body 30, and is configured to move under the control of the movement of the output end of the electromagnet 10 to drive the valve core 40 to move at least between a first position and a second position along the extension direction of the valve body 30 inside the valve body 30; the inductive stroke sensor 50 is disposed at the second end of the valve body 30, and includes a detection end 51 and an induction part 52, the detection end 51 is configured to move along the extension direction of the valve body 30 with the valve core 40, and the induction part 52 is configured to trigger a signal at least when the detection end 51 is in the first position or the second position.
[0042] During the working process of the electromagnetic ball valve of the present disclosure, when the output end of the electromagnet 10 moves, it can drive the push rod 20 to move, and then drive the valve core 40 to move at least between a first position and a second position along the extension direction of the valve body 30 inside the valve body 30. The detection end 51 of the inductive stroke sensor 50 can move along the extension direction of the valve body 30 with the valve core 40, and the induction part 52 triggers a signal at least when the detection end 51 is in the first position or the second position.
[0043] In this way, the electromagnetic ball valve of the present disclosure can effectively obtain the position state of the valve core 40 by using the inductive stroke sensor 50, so as to facilitate the control unit to control through the position state of the valve core 40, playing a role in protecting the safety of the system.
[0044] Specifically, after the electromagnet 10 in the electromagnetic ball valve of the present disclosure is energized, the push rod 20 drives the valve core 40 to move towards the target position within the valve body 30. After the valve core 40 moves to the target position, it can effectively trigger the inductive stroke sensor 50 to send out corresponding signals to indicate that the valve core 40 has reached the target position, facilitating the subsequent control logic to continue; while when the valve core 40 does not move to the target position normally, or the inductive stroke sensor 50 does not detect that the valve core 40 has reached the target position, the inductive stroke sensor 50 will not send out corresponding signals, and the subsequent control logic will not continue, achieving the function of ensuring equipment safety.
[0045] For example, when the electromagnetic ball valve of the present disclosure is applied to various devices such as safety doors, safety valves, and reversing valves, it can ensure that the device operates normally only when the safety door and safety valve are closed, preventing staff from performing subsequent operations when the device has not completed the switching operation properly, which may cause equipment damage or even personal injury.
[0046] It can be understood that in an embodiment of the present disclosure, the electromagnet 10 can adopt a multi-layer winding technology, thereby increasing the thrust of the electromagnet 10 and facilitating the valve core 40 of the present disclosure to quickly reverse. Specifically, the reversing time of the valve core 40 of the present disclosure can be less than 25 ms; the electromagnet 10 can also adopt a low-temperature-rise coil process to ensure that the electromagnet 10 can operate normally in harsh environments.
[0047] In an embodiment of the present disclosure, one of the detection end 51 and the induction part 52 is a coil and the other is a magnet. The inductive stroke sensor 50 is configured to obtain the position of the detection end 51 by acquiring the electromagnetic induction electromotive force between the coil and the magnet. That is, the inductive stroke sensor 50 of the present disclosure uses the principle of electromagnetic induction to detect the position state of the valve core 40 without the need for the detection end 51 and the induction part 52 to come into contact with each other. This can not only effectively improve the reliability of the inductive stroke sensor 50 of the present disclosure and extend its service life, but also, due to the small magnetic hysteresis of the inductive stroke sensor 50 of the present disclosure, improve the working frequency response of the inductive stroke sensor 50 and ensure good repeatability of the inductive stroke sensor 50.
[0048] Specifically, such as Figure 2As shown, in an embodiment of the present disclosure, the inductive stroke sensor 50 includes a pressure-resistant part 53 and a feedback part 54. The pressure-resistant part 53 and the feedback part 54 are configured to be slidably connected relative to each other, and the detection end 51 and the induction part 52 are both located in the installation cavity 55 surrounded by the pressure-resistant part 53 and the feedback part 54. The detection end 51 is arranged in the pressure-resistant part 53, and the induction part 52 is arranged on the feedback part 54. In the inductive stroke sensor 50 of the present disclosure, since the detection end 51 and the induction part 52 are both located in the installation cavity 55, other substances such as hydraulic oil can be effectively prevented from entering the installation cavity 55, which affects the normal operation of the inductive stroke sensor 50, thereby improving the available operating temperature range of the inductive stroke sensor 50. Specifically, the protection levels of the pressure-resistant part 53 and the feedback part 54 are set to IP, so as to ensure that the electromagnetic ball valve of the present disclosure can work normally in an outdoor spraying environment.
[0049] Moreover, since the pressure-resistant part 53 and the feedback part 54 are of a split structure, the pressure-resistant part 53 is used to cooperate with the valve core 40, which is convenient for the inductive stroke sensor 50 of the present disclosure to adapt to different models of electromagnetic ball valves. It can be understood that, in order to ensure the pressure-resistant performance of the pressure-resistant part 53, the pressure-resistant part 53 can select a relevant structure that can withstand at least the maximum pressure of 35 MPa.
[0050] Specifically, the inductive stroke sensor 50 of the present disclosure selects an NPN (normally closed) or PNP (normally open) output mode, which is not limited here. In order to improve the reliability of the inductive stroke sensor 50 of the present disclosure, an inductive stroke sensor 50 with protection functions such as polarity, overload, and short-circuit transient can be selected.
[0051] As Figure 1 and Figure 3 shown, in an embodiment of the present disclosure, the electromagnetic ball valve of the present disclosure further includes a detection rod 60. The detection rod 60 abuts against the second end of the valve core 40, and the detection rod 60 is configured to abut against the pressure-resistant part 53 to drive the detection end 51 to move. That is, during the operation of the electromagnetic ball valve of the present disclosure, when the valve core 40 moves along the extending direction of the valve body 30 in the valve body 30, it can drive the detection rod 60 to move, and then drive the pressure-resistant part 53 and the detection end 51 to move, so as to facilitate the inductive stroke sensor 50 to obtain the position of the valve core 40.
[0052] As Figure 3 shown, in an embodiment of the present disclosure, the detection rod 60 includes a rod body 62 and an abutting part 61 arranged at the first end of the rod body 62. The abutting part 61 is configured to abut against the valve core 40, and the rod body 62 is configured to cooperate with the detection end 51 to drive the detection end 51 to move. That is, during the operation of the electromagnetic ball valve of the present disclosure, the abutting part 61 abuts against the valve core 40, and the valve core 40 drives the rod body 62 to move by pushing the abutting part 61, and then drives the detection end 51 to move.
[0053] As shown Figure 3 In an embodiment of the present disclosure, a screw hole is provided on the abutting portion 61, and a thread adapted to the screw hole is provided at the first end of the rod body 62; a locking nut 63 is further provided on the detection rod 60. The locking nut 63 is disposed on the rod body 62 and abuts against the abutting portion 61, so that the abutting portion 61 and the rod body 62 are tightly screwed together. Therefore, the abutting portion 61 and the rod body 62 can be threadedly connected to each other through the adapted thread and screw hole; and by providing the locking nut 63 on the rod body 62 and the locking nut 63 abuts against the abutting portion 61, it can be ensured that the abutting portion 61 and the rod body 62 are tightly screwed together, avoiding loosening between the abutting portion 61 and the rod body 62.
[0054] As shown Figure 1 In an embodiment of the present disclosure, the electromagnetic ball valve of the present disclosure further includes an end plug 90. The end plug 90 is fixedly disposed outside the second end of the valve body 30 and is fixedly connected to the inductive stroke sensor 50. In this way, a fixed connection between the inductive stroke sensor 50 and the valve body 30 can be achieved. Specifically, matching threads can be provided on the inner side of the second end of the valve body 30 and the outer side of the first end of the end plug 90, and matching threads can also be provided on the inner side of the second end of the end plug 90 and the outer side of the first end of the inductive stroke sensor 50, so as to effectively achieve the fixed connection between the valve body 30, the end plug 90 and the inductive stroke sensor 50.
[0055] As shown Figure 1 In an embodiment of the present disclosure, the electromagnetic ball valve of the present disclosure further includes a return spring 70. The first end of the return spring 70 abuts against the locking nut 63 of the detection rod 60, and the second end is configured to abut against the inner wall of the second end of the inner cavity formed by the end plug 90 and the valve body 30.
[0056] After the electromagnet 10 is powered off, the return spring 70 drives the valve core 40 to return to the initial position by pushing the locking nut 63 of the detection rod 60. And since the first end of the return spring 70 abuts against the locking nut 63 of the detection rod 60, it can be ensured that the detection rod 60 and the return spring 70 move synchronously, so that after the electromagnet 10 is powered off, the return spring 70 drives the detection rod 60 and the pressure-resistant portion 53 and the detection end 51 to return to the initial position.
[0057] As shown Figure 1As shown, in an embodiment of the present disclosure, the valve core 40 is configured to be spherical; a first sharp corner portion 31 is provided at a position adjacent to the first side of the valve core 40, and a second sharp corner portion 32 is provided at a position adjacent to the second side of the valve core 40, and the valve core 40 is configured to abut against the first sharp corner portion 31 to disconnect the first passage 81 from the third passage 83; when in the second position, it abuts against the first sharp corner portion 31 to disconnect the second passage 82 from the third passage 83. In this way, since the valve core 40 is spherical, when the valve core 40 abuts against the first sharp corner portion 31, the first passage 81 can be disconnected from the third passage 83, and when the valve core 40 abuts against the first sharp corner portion 31, the second passage 82 can be disconnected from the third passage 83, thereby effectively achieving the purpose of commutation.
[0058] The present disclosure also provides a valve control system, which includes the aforementioned electromagnetic ball valve and a control unit; the control unit is configured to control the movement of the valve core 40 to a target position through the electromagnet 10, obtain the trigger signal of the inductive travel sensor 50 to determine whether the valve core 40 has moved to the target position, and issue a movement error signal in the case where the valve core 40 has not moved to the target position.
[0059] That is, during the working process of the valve control system of the present disclosure, the control unit is configured to control the movement of the valve core 40 to a target position through the electromagnet 10 and obtain the trigger signal of the inductive travel sensor 50, so as to determine whether the valve core 40 has moved to the target position. In the case where the valve core 40 has moved to the target position, subsequent other control operations can be performed, while in the case where the valve core 40 has not moved to the target position, a movement error signal is issued, thereby ensuring that the subsequent control logic will not continue and achieving the effect of ensuring the safety of the equipment.
[0060] The embodiments of the present disclosure have been described above. The above description is exemplary and not exhaustive, and is not limited to the disclosed embodiments. Many modifications and variations are obvious to those of ordinary skill in the art in the technical field without departing from the scope and spirit of the described embodiments. The selection of the terms used herein is intended to best explain the principles of the embodiments, the practical application, or the improvement of the technology in the market, or to enable other ordinary technical personnel in the technical field to understand the disclosed embodiments. The scope of the present disclosure is defined by the appended claims.
Claims
1. An electromagnetic ball valve, characterized in that: It comprises an electromagnet (10), a push rod (20), a valve body (30), a valve core (40) and an inductive stroke sensor (50); The electromagnet (10) is configured to be arranged outside a first end of the valve body (30), and the push rod (20) is configured to be arranged at a first end inside the valve body (30), and is configured to be moved under the control of the movement of the output end of the electromagnet (10), so as to drive the valve core (40) to move inside the valve body (30) along the extension direction of the valve body (30) at least between a first position and a second position; The inductive stroke sensor (50) is arranged at the second end of the valve body (30), and comprises a detection end (51) and a sensing portion (52), wherein the detection end (51) is configured to move along with the valve core (40) along the extension direction of the valve body (30), and the sensing portion (52) is configured to trigger a signal at least when the detection end (51) is in the first position or the second position.
2. The electromagnetic ball valve according to claim 1, characterized in that: One of the detection end (51) and the induction part (52) is a coil, and the other is a magnet. The inductive stroke sensor (50) is constructed to obtain the position of the detection end (51) by obtaining the electromagnetic induced electromotive force between the coil and the magnet.
3. The electromagnetic ball valve according to claim 2, characterized in that: The inductive stroke sensor (50) comprises a pressure-resistant part (53) and a feedback part (54), wherein the pressure-resistant part (53) and the feedback part (54) are configured to be relatively slidably connected, and the detection end (51) and the sensing part (52) are both located in an installation cavity (55) surrounded by the pressure-resistant part (53) and the feedback part (54), and the detection end (51) is arranged in the pressure-resistant part (53), and the sensing part (52) is arranged on the feedback part (54).
4. The electromagnetic ball valve according to claim 3, characterized in that: It also includes a detection rod (60), the detection rod (60) abuts against the second end of the valve core (40), and the detection rod (60) is configured to abut against the pressure-resistant portion (53) to drive the detection end (51) to move.
5. The electromagnetic ball valve according to claim 4, characterized in that: The detection rod (60) comprises a rod body (62) and an abutment portion (61) arranged at a first end of the rod body (62), wherein the abutment portion (61) is configured to abut against the valve core (40), and the rod body (62) is configured to cooperate with the detection end (51) to drive the detection end (51) to move.
6. The electromagnetic ball valve according to claim 5, characterized in that: The abutment portion (61) is provided with a screw hole, and the first end of the rod body (62) is provided with a thread matched with the screw hole; the detection rod (60) is also provided with a locking nut (63), and the locking nut (63) is arranged on the rod body (62) and fits with the abutment portion (61) so that the abutment portion (61) and the rod body (62) are tightly screwed.
7. The electromagnetic ball valve according to claim 6, characterized in that: It also includes an end plug (90) and a return spring (70), wherein the end plug (90) is fixedly arranged outside the second end of the valve body (30) and is fixedly connected to the inductive stroke sensor (50); The first end of the return spring (70) abuts against the locking nut (63) of the detection rod (60), and the second end is constructed to abut against the cavity wall of the second end of the inner cavity formed by the end plug (90) and the valve body (30).
8. The electromagnetic ball valve according to any one of claims 1 to 7, characterized in that: In the inner cavity of the valve core (40), a first passage (81) is provided at a position on a first side of the valve core (40), a second passage (82) is provided at a position on a second side of the valve core (40), and a third passage (83) is provided on the inner cavity of the valve body (30) at a position corresponding to the valve core (40); The valve core (40) is configured to disconnect the first passage (81) from the third passage (83) when the valve core is in a first position, and disconnect the second passage (82) from the third passage (83) when the valve core is in a second position.
9. The electromagnetic ball valve according to claim 8, characterized in that: The valve core (40) is configured to be spherical; A first pointed corner (31) is provided at a position adjacent to the first side of the valve core (40), and a second pointed corner (32) is provided at a position adjacent to the second side of the valve core (40), and the valve core (40) is constructed to abut against the first pointed corner (31) to disconnect the first passage (81) from the third passage (83); when in the second position, the valve core (40) abuts against the second pointed corner (32) to disconnect the second passage (82) from the third passage (83).
10. A valve control system, characterized in that: It comprises the electromagnetic ball valve and a control unit as claimed in any one of claims 1 to 9; the control unit is configured to control the valve core (40) to move to a target position through the electromagnet (10), obtain a trigger signal of the inductive stroke sensor (50) to determine whether the valve core (40) has moved to the target position, and send a movement error signal when the valve core (40) has not moved to the target position.