A large flow on-off solenoid valve with improved electromagnetic force

Abstract

The utility model belongs to the technical field of big flow switch solenoid valve of promotion electromagnetic force. Second passageway (10) of valve bush (1) one end intercommunication second cavity (11), first passageway (12) of valve bush (1) side department intercommunication first cavity (13), be provided with valve core (9) in valve bush (1), valve core (9) one end is close to second passageway (10), recess (14) is provided to the other end of valve core (9), shell (5) connects valve bush (1), and bottom boss (15) is set up in the shell (5) inside close to recess (14) position. Big flow switch solenoid valve of promotion electromagnetic force described in the utility model, simple structure, under the premise of not needing to increase solenoid valve volume, number of turns and stroke, satisfy electromagnetic force and big flow, promote product performance.

Description

Technical Field

[0001] This utility model belongs to the field of switching solenoid valve technology, and more specifically, it relates to a high-flow switching solenoid valve that enhances electromagnetic force. Background Technology

[0002] Solenoid valves, characterized by their fast response and high precision, are actuators that can be paired with various controls to adjust parameters such as flow rate, direction, speed, and pressure of the medium. However, existing solenoid valves generally suffer from insufficient electromagnetic force and an inability to achieve high flow rates. This results in slow response and an inability to achieve high flow rates under low pressure differentials. To address these issues, the industry has attempted various improvement solutions, such as increasing the valve's size, increasing the number of coil turns to enhance electromagnetic force, and increasing the valve core's outer diameter or stroke to increase the opening cross-sectional area. However, these approaches not only increase costs but also lead to higher energy consumption, contradicting the trends of lightweight design and energy conservation.

[0003] Existing technology includes a technology entitled "A Normally Open Solenoid Valve for Automotive Air Springs," with publication number CN117739152A. This technology discloses a normally open solenoid valve for automotive air springs, comprising: a housing, an internal frame, an enameled wire wound around the outer side of the frame, a magnetic shielding tube installed in the central inner hole of the frame, an axially movable moving iron core disposed inside the magnetic shielding tube, an electrical interface connected to the frame installed at the first axial end of the housing, a base installed at the second axial end of the housing, a base seat installed between the base and the frame, a valve port disposed on the base, and an axially movable push rod disposed between the base and the base at a position corresponding to the valve port. The first end of the push rod passes through the base and abuts against the moving iron core, an elastic element is disposed between the second end of the push rod and the base, and a sealing element is also disposed at the second end of the push rod for forming a seal with the valve port. This invention has a novel and robust structure, is easy to assemble, and solves the problems of complex structure and high cost of existing solenoid valves.

[0004] However, this technology does not address the technical issues and solutions of this application. Utility Model Content

[0005] The technical problem to be solved by this utility model is to provide a high-flow-rate on / off solenoid valve with improved electromagnetic force, which is simple in structure and can meet the requirements of electromagnetic force and large flow rate without increasing the volume, number of turns and stroke of the solenoid valve, thereby improving product performance.

[0006] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows:

[0007] This utility model is a high-flow-rate switching solenoid valve that enhances electromagnetic force. The second channel at one end of the valve sleeve is connected to the second cavity, and the first channel on the side of the valve sleeve is connected to the first cavity. A valve core is provided inside the valve sleeve. One end of the valve core is close to the second channel, and the other end of the valve core is provided with a groove. The outer shell is connected to the valve sleeve, and a bottom boss is provided inside the outer shell near the groove.

[0008] The second channel has a channel sealing surface on the side near the valve core, and the valve core has a valve core sealing surface on the side near the second channel.

[0009] The valve sleeve and the outer shell are riveted together.

[0010] The solenoid sub-assembly is installed inside the housing, with one end of the valve core fitted inside the valve sleeve and the other end of the valve core fitted inside the solenoid sub-assembly.

[0011] The valve core has a spring cavity near the bottom boss, and a spring is installed inside the spring cavity. One end of the spring rests against the bottom of the spring cavity, and the other end of the spring rests against the bottom boss inside the outer shell.

[0012] A housing support is provided at the junction of the housing and the valve sleeve.

[0013] The valve sleeve, outer shell, outer shell support, and valve core are all structures made of magnetically conductive materials.

[0014] The outer casing bracket and valve sleeve are press-fitted together.

[0015] A sealing element A is installed in the first mounting groove of the outer ring of the valve sleeve, and a sealing element B is installed in the second mounting groove of the outer ring of the valve sleeve.

[0016] A filter screen is installed at the first channel location.

[0017] The working principle and beneficial effects of this utility model are as follows:

[0018] The high-flow-rate solenoid valve with enhanced electromagnetic force described in this utility model has a valve sleeve and a housing fixedly connected. A solenoid sub-assembly is installed inside the housing. The valve sleeve has a first channel and a second channel. The first channel connects to a first cavity, and the second channel connects to a second cavity. The first and second channels are also connected. The movement of the valve core allows for the connection and disconnection of the first and second channels. The movement of the valve core is controlled by energizing and de-energizing the solenoid sub-assembly. The working principle of the entire structure is as follows: when the solenoid valve is not energized, the solenoid sub-assembly does not generate an electromagnetic field. Under the action of the spring force, the valve core moves towards the second channel, pressing against the valve sleeve. The second channel and the first channel are not connected, thus isolating the first and second cavities. When the solenoid valve is energized, the solenoid assembly generates a magnetic field, which is transmitted between the valve sleeve, outer shell, and valve core made of magnetically conductive material. The electromagnetic force generated by this magnetic field acts on the valve core, causing it to overcome the spring force and move away from the second channel, i.e., towards the bottom boss of the outer shell, until the bottom of the valve core's groove engages with the bottom boss. At this point, the valve core and valve sleeve form an opening, connecting the first and second channels, allowing oil to flow from the first cavity to the second cavity. The oil flow rate is controlled by the movement of the valve core relative to the valve sleeve. The further the valve core is from the second channel, the larger the opening; the closer the valve core is to the second channel, the smaller the opening, until the valve core is completely close to the second channel, thus disconnecting the first and second channels. The solenoid valve structure of this invention features an integrated outer shell structure where the rear yoke sleeve and outer shell are one piece. This design effectively eliminates the adverse effects of gaps on the electromagnetic force, improving the electromagnetic force; simultaneously, it reduces assembly steps between parts, thereby improving precision. Secondly, the valve core and valve sleeve sealing structure employs a conical seal, where the outer diameter of the valve core contacts the sealing surface of the valve sleeve, thus avoiding the risk of the valve core being forced open by oil pressure due to unbalanced force. Thirdly, by designing the aperture of the channels (first and second channels) on the valve sleeve and increasing the width of the filter screen and the cross-sectional area of ​​the valve core and valve sleeve openings, a high flow rate under low pressure differential conditions is achieved. Attached Figure Description

[0019] The following is a brief explanation of the contents depicted in the accompanying drawings and the markings therein:

[0020] Figure 1 This is a schematic diagram of the structure of the high-flow-rate switching solenoid valve for enhancing electromagnetic force as described in this utility model;

[0021] Figure 2 This is a schematic diagram of the structure of the high-flow-rate switching solenoid valve for enhancing electromagnetic force as described in this utility model;

[0022] The following are labeled in the attached diagram: 1. Valve sleeve; 2. Seal A; 3. Filter screen; 4. Seal B; 5. Housing; 6. Solenoid sub-assembly; 7. Spring; 8. Housing support; 9. Valve core; 10. Second channel; 11. Second cavity; 12. First channel; 13. First cavity; 14. Groove; 15. Bottom boss; 16. Channel sealing surface; 17. Valve core sealing surface; 18. Spring cavity. Detailed Implementation

[0023] The following description, with reference to the accompanying drawings, provides a more detailed explanation of the specific embodiments of this utility model, including the shape and structure of each component, the relative positions and connections between the parts, the functions and working principles of each part:

[0024] As attached Figure 1 Appendix Figure 2 As shown, this utility model is a high-flow-rate switching solenoid valve with enhanced electromagnetic force. A second channel 10 at one end of the valve sleeve 1 connects to a second cavity 11, and a first channel 12 on the side of the valve sleeve 1 connects to a first cavity 13. A valve core 9 is installed inside the valve sleeve 1, with one end of the valve core 9 near the second channel 10 and the other end of the valve core 9 having a groove 14. A housing 5 connects to the valve sleeve 1, and a bottom boss 15 is provided inside the housing 5 near the groove 14. To address the shortcomings of existing technologies, an improved technical solution is proposed. In this structure, the valve sleeve and housing are fixedly connected, and a solenoid sub-assembly 6 is installed inside the housing. A first channel and a second channel are provided on the valve sleeve. The first channel connects to the first cavity, and the second channel connects to the second cavity. Simultaneously, the first and second channels are connected, and the movement of the valve core allows for the connection and disconnection of the first and second channels. The movement of the valve core is controlled by energizing and de-energizing the solenoid sub-assembly 6. The working principle of the entire structure is as follows: Figure 1 As shown, when the solenoid valve is not energized, the solenoid sub-assembly 6 does not generate an electromagnetic field. Under the external force of the spring 7, the valve core 9 moves towards the second channel 10, pressing against the valve sleeve 1. The second channel 10 and the first channel 12 are not connected, thus isolating the first cavity and the second cavity. Figure 2As shown, when the solenoid valve is energized, the solenoid assembly 6 generates a magnetic field, which is transmitted between the valve sleeve 1, outer shell 5, outer shell support 8, and valve core 9, all made of magnetically conductive material. The electromagnetic force generated by the magnetic field acts on the valve core 9, causing it to move away from the second channel 10 against the force of the spring 7. That is, the valve core 9 moves towards the bottom boss 15 of the outer shell 5 until the bottom of the groove 14 of the valve core 9 is attracted to the bottom boss 15. At this point, the valve core 9 and the valve sleeve 1 form an opening, connecting the first channel 10 and the second channel 12. Oil can flow from the first cavity 13 to the second cavity 11, thus achieving oil flow. The flow rate of the oil is controlled by the movement position of the valve core 9 relative to the valve sleeve 1. The further away the valve core 9 is from the second channel 10, the larger the opening; the closer the valve core 9 is to the second channel 10, the smaller the opening, until the valve core 9 is completely close to the second channel 10, thus disconnecting the first channel 12 and the second channel 10. The solenoid valve structure of this utility model has several advantages. First, it adopts an integrated shell structure where the rear yoke sleeve and outer casing 5 are integrated. This design effectively eliminates the adverse effects of gaps on electromagnetic force, thus enhancing the electromagnetic force. Simultaneously, it reduces assembly steps between parts, thereby improving precision. Second, the sealing structure of the valve core 9 and valve sleeve 1 employs a conical seal, where the outer diameter of the valve core contacts the sealing surface of the valve sleeve. This avoids the risk of the valve core 9 being forced open by oil pressure due to unbalanced force. Third, by designing the channel aperture on the valve sleeve 1 and increasing the filter screen width and the cross-sectional area of ​​the valve core and valve sleeve openings, a high flow rate is achieved under low pressure differential conditions. The high-flow-rate solenoid valve with enhanced electromagnetic force described in this utility model has a simple structure and satisfies both electromagnetic force and high flow rate without increasing the solenoid valve's volume, number of turns, or stroke, thereby improving product performance.

[0025] The second channel 10 has a channel sealing surface 16 on the side near the valve core 9, and the valve core 9 has a valve core sealing surface 17 on the side near the second channel 10. In the above structure, both the channel sealing surface 16 and the valve core sealing surface 17 are annular structures and conical structures. When the valve sleeve and the valve core are in contact, the channel sealing surface 16 fits against the valve core sealing surface 17 to achieve a seal and prevent oil from passing through.

[0026] The valve sleeve 1 and the outer shell 5 are riveted together. In the above structure, the rear yoke sleeve and the outer shell 5 are an integral shell, which simplifies the structure, improves performance, and ensures a reliable connection between the valve sleeve 1 and the outer shell 5.

[0027] The outer casing 5 contains a solenoid sub-assembly 6. One end of the valve core 9 is fitted inside the valve sleeve 1, and the other end of the valve core 9 is fitted inside the solenoid sub-assembly 6. With this structure, the position of the valve core changes when the solenoid valve is energized or de-energized (not energized), thereby achieving on / off control between the first and second channels, and adjusting the opening degree when open.

[0028] A spring cavity 18 is provided at one end of the valve core 9 near the bottom boss 15. A spring 7 is installed inside the spring cavity 18, with one end of the spring 7 abutting against the bottom of the spring cavity 18 and the other end abutting against the bottom boss 15 inside the outer casing 5. In this structure, the spring is reliably installed in the spring cavity 18, and the spring 7 has a telescopic function. When extended, it applies force to the valve core 9, causing the valve core 9 to conform to the second channel 10 of the valve sleeve, thereby disconnecting the first channel 12 and the second channel 10. When the solenoid valve is energized, under the action of electromagnetic force, the spring 7 contracts, the valve core moves, and the channel opens.

[0029] A housing support 8 is provided at the joint between the outer shell 5 and the valve sleeve 1. The housing support 8 is press-fitted to the valve sleeve 1. In this structure, the housing support 8 is located between the outer shell 5 and the valve sleeve 1 to support the connection between the outer shell 5 and the valve sleeve 1, ensuring a reliable connection.

[0030] The valve sleeve 1, outer shell 5, outer shell support 8, and valve core 9 are all structures made of magnetically conductive material. The valve sleeve 1, outer shell 5, and valve core 9 made of the aforementioned magnetically conductive material have the function of transmitting magnetic fields, and the electromagnetic force generated under the action of the magnetic field can act on the valve core 9.

[0031] A sealing element A2 is installed in the first mounting groove of the outer ring of the valve sleeve 1, and a sealing element B4 is installed in the second mounting groove of the outer ring of the valve sleeve 1. In the above structure, the sealing elements A2 and B4 protrude from their respective mounting grooves, and reliably perform a sealing function after the solenoid valve is installed in place.

[0032] A filter screen 3 is installed at the first channel 12. In this structure, the filter screen is used to filter impurities in the oil, preventing impurities from entering the second cavity from the first and second channels.

[0033] The high-flow-rate solenoid valve for enhancing electromagnetic force described in this utility model has the following structural configuration: the valve sleeve and the outer shell are fixedly connected; a solenoid sub-assembly 6 is installed inside the outer shell; the valve sleeve has a first channel and a second channel; the first channel connects to a first cavity, and the second channel connects to a second cavity; both channels are connected simultaneously, and the movement of the valve core allows for the connection and disconnection of the first and second channels. The movement of the valve core is controlled by energizing and de-energizing the solenoid sub-assembly 6. The working principle of the entire structure is as follows: Figure 1 As shown, when the solenoid valve is not energized, the solenoid sub-assembly 6 does not generate an electromagnetic field. Under the external force of the spring 7, the valve core 9 moves towards the second channel 10, pressing against the valve sleeve 1. The second channel 10 and the first channel 12 are not connected, thus isolating the first cavity and the second cavity. Figure 2As shown, when the solenoid valve is energized, the solenoid assembly 6 generates a magnetic field, which is transmitted between the valve sleeve 1, outer shell 5, outer shell support 8, and valve core 9, all made of magnetically conductive material. The electromagnetic force generated by the magnetic field acts on the valve core 9, causing it to move away from the second channel 10 against the force of the spring 7. That is, the valve core 9 moves towards the bottom boss 15 of the outer shell 5 until the bottom of the groove 14 of the valve core 9 is attracted to the bottom boss 15. At this point, the valve core 9 and the valve sleeve 1 form an opening, connecting the first channel 10 and the second channel 12. Oil can flow from the first cavity 13 to the second cavity 11, thus achieving oil flow. The flow rate of the oil is controlled by the movement position of the valve core 9 relative to the valve sleeve 1. The further away the valve core 9 is from the second channel 10, the larger the opening; the closer the valve core 9 is to the second channel 10, the smaller the opening, until the valve core 9 is completely close to the second channel 10, thus disconnecting the first channel 12 and the second channel 10. The structure of this utility model's solenoid valve has three main advantages. First, it adopts an integrated shell structure where the rear yoke sleeve and outer casing 5 are one-piece. This design effectively eliminates the adverse effects of gaps on electromagnetic force, thus improving the electromagnetic force. Simultaneously, it reduces assembly steps between parts, thereby improving precision. Second, the sealing structure of the valve core 9 and valve sleeve 1 employs a conical seal, where the outer diameter of the valve core contacts the sealing surface of the valve sleeve, avoiding the risk of the valve core 9 being forced open by oil pressure due to unbalanced forces. Third, by designing the channel aperture on the valve sleeve 1 and increasing the filter screen width and the cross-sectional area of ​​the valve core and valve sleeve openings, a high flow rate is achieved under low pressure differential conditions.

[0034] The present invention has been described above with reference to the accompanying drawings. Obviously, the specific implementation of the present invention is not limited to the above-described manner. Any improvements made using the inventive concept and technical solution of the present invention, or the direct application of the inventive concept and technical solution to other situations without modification, are all within the protection scope of the present invention.

Claims

1. A high-flow-rate on / off solenoid valve that enhances electromagnetic force, characterized in that: The second channel (10) at one end of the valve sleeve (1) is connected to the second cavity (11), the first channel (12) on the side of the valve sleeve (1) is connected to the first cavity (13), the valve core (9) is provided inside the valve sleeve (1), one end of the valve core (9) is close to the second channel (10), the other end of the valve core (9) is provided with a groove (14), the outer shell (5) is connected to the valve sleeve (1), and the bottom boss (15) is provided inside the outer shell (5) near the groove (14).

2. The high-flow-rate switching solenoid valve for enhancing electromagnetic force according to claim 1, characterized in that: The second channel (10) is provided with a channel sealing surface (16) on the side near the valve core (9), and the valve core (9) is provided with a valve core sealing surface (17) on the side near the second channel (10).

3. The high-flow-rate switching solenoid valve for enhancing electromagnetic force according to claim 1 or 2, characterized in that: The valve sleeve (1) and the outer shell (5) are riveted together.

4. The high-flow-rate switching solenoid valve for enhancing electromagnetic force according to claim 1 or 2, characterized in that: The outer casing (5) is provided with a solenoid sub-assembly (6), one end of the valve core (9) is fitted inside the valve sleeve (1), and the other end of the valve core (9) is fitted inside the solenoid sub-assembly (6).

5. The high-flow-rate switching solenoid valve for enhancing electromagnetic force according to claim 1 or 2, characterized in that: The valve core (9) has a spring cavity (18) near the bottom boss (15) and a spring (7) is installed inside the spring cavity (18). One end of the spring (7) rests against the bottom of the spring cavity (18) and the other end of the spring (7) rests against the bottom boss (15) inside the outer shell (5).

6. The high-flow-rate switching solenoid valve for enhancing electromagnetic force according to claim 3, characterized in that: A housing support (8) is provided at the joint between the outer shell (5) and the valve sleeve (1).

7. The high-flow-rate switching solenoid valve for enhancing electromagnetic force according to claim 1, characterized in that: The valve sleeve (1), outer shell (5), outer shell bracket (8), and valve core (9) are all structures made of magnetically conductive material.

8. The high-flow-rate switching solenoid valve for enhancing electromagnetic force according to claim 6, characterized in that: The outer shell bracket (8) and the valve sleeve (1) are press-fitted together.

9. The high-flow-rate switching solenoid valve for enhancing electromagnetic force according to claim 1 or 2, characterized in that: A sealing element A (2) is installed in the first mounting groove of the outer ring of the valve sleeve (1), and a sealing element B (4) is installed in the second mounting groove of the outer ring of the valve sleeve (1).

10. The high-flow-rate switching solenoid valve for enhancing electromagnetic force according to claim 1 or 2, characterized in that: A filter (3) is installed at the first channel (12) position.

Images