An electromagnetic valve

Abstract

The utility model relates to an electromagnetic valve in the technical field of electromagnetic valve, including valve body and valve mechanism, be provided with first passageway and second passageway in the valve body, first passageway and second passageway are connected through the valve cavity between, the valve mechanism includes valve core and electromagnetic structure, the electromagnetic structure includes cover body, magnet and coil, the magnet is installed in the cover body, the clearance is arranged between the inner wall of cover body and magnet, the coil is hung and is installed in the clearance through the metal spring, the valve core is installed on the metal spring, the utility model integrates the part component of original cover body and sealing element into the metal spring, and the coil and valve core are directly hung and supported through the metal spring, thereby simplifying the overall structure of electromagnetic valve, reduces the number of parts, reduces the manufacturing cost. Meanwhile, the spring structure made of metal not only ensures the stability in the use process of coil and valve core, but also significantly improves the durability of electromagnetic valve.

Description

Technical Field

[0001] This utility model relates to the field of electromagnetic valve technology, and specifically to an electromagnetic valve. Background Technology

[0002] The working principle of a solenoid valve is to energize the solenoid coil, causing the iron core wound around the coil to become magnetic, attracting the armature below the iron core to move, thereby causing the valve port sealing part to separate from the valve port, opening the valve and allowing gas and liquid to pass through.

[0003] The prior art can refer to a novel solenoid valve (patent number ZL202411273208.0) applied for by the applicant earlier. By embedding the magnet and coil inside the housing, the leakage magnetic field is greatly reduced, the magnetic field utilization of the coil is improved, the number of coil turns is reduced, the power consumption is reduced, and the heat generation problem of the solenoid valve is effectively solved. At the same time, the housing can effectively isolate the external magnetic field, avoid interference to the internal electromagnetic structure, and ensure the stability of the solenoid valve's operation. Furthermore, the coil and valve core with cantilever support are arranged in the gap between the isolation housing and the magnet, so that no mechanical friction occurs during the driving and switching process of the solenoid valve, completely solving the problems of wear and mechanical noise of the solenoid valve.

[0004] Based on this, the applicant further designed and provided a simplified solenoid valve, making its structure simpler and its installation and use more convenient and stable. Summary of the Invention

[0005] This invention provides a solenoid valve to solve the problems mentioned in the background section.

[0006] The objective of this utility model is achieved through the following means:

[0007] An electromagnetic valve includes a valve body and a valve mechanism disposed within the valve body. The valve body has a first channel and a second channel for communicating with the outside, and the first channel and the second channel are connected through a valve cavity. The valve mechanism includes a valve core for isolating the valve cavity and an electromagnetic structure for driving the valve core to move. The electromagnetic structure includes a cover, a magnet, and a coil. The magnet is installed in the cover, and a gap is provided between the inner wall of the cover and the magnet. The coil is suspended in the gap by a metal spring, and the valve core is installed on the metal spring.

[0008] Furthermore, the first channel passes through the cover and the magnet and connects to the valve cavity, with the valve core abutting against the end of the first channel, thus isolating the first channel from the valve cavity.

[0009] Furthermore, the metal spring is provided with several connection holes.

[0010] Furthermore, a protrusion is provided around the bottom of the valve core along the outer edge of the first channel, and the end of the protrusion away from the valve core is arranged in an arc shape.

[0011] Furthermore, the metal spring comprises a main body and a connecting part fixed on the valve body. The connecting part is connected to the main body through several cantilever arms, and the coil and valve core are both mounted on the main body.

[0012] Furthermore, the valve body is composed of an upper cover and a base, and the connecting part is disposed between the upper cover and the base.

[0013] Furthermore, a magnetic conductive sheet is provided at the upper end of the magnet.

[0014] Furthermore, a connection channel communicating with the outside is provided on one side of the valve body, and the connection channel is connected to the valve cavity.

[0015] Furthermore, the valve core is provided with a head and a tail at its upper and lower ends, respectively, and the head and tail are used to isolate the first channel and the second channel.

[0016] Furthermore, the metal spring is equipped with a magnetic attracting piece for engaging with the magnet.

[0017] Compared to existing technologies, this invention integrates some components of the original cover and sealing element into a metal spring. The coil and valve core are directly suspended and supported by the metal spring, thereby simplifying the overall structure of the solenoid valve, reducing the number of parts, and lowering manufacturing costs. At the same time, the metal spring structure not only ensures the stability of the coil and valve core during use but also significantly improves the durability of the solenoid valve. Attached Figure Description

[0018] Figure 1 This is a cross-sectional view of a solenoid valve in this embodiment.

[0019] Figure 2 This is a diagram showing the usage status of a solenoid valve in this embodiment.

[0020] Figure 3 This is an exploded view of the valve mechanism in this utility model;

[0021] Figure 4 This is a cross-sectional view of a solenoid valve in this second embodiment;

[0022] Figure 5 This is a diagram showing the first usage state of a solenoid valve in this second embodiment;

[0023] Figure 6 This is a diagram showing the second usage state of a solenoid valve in this embodiment two;

[0024] Figure 7 This is a schematic diagram of the structure of a solenoid valve in Embodiment 3;

[0025] Figure 8 This is an explosion diagram of a solenoid valve in Embodiment 3;

[0026] Figure 9 This is a cross-sectional view of a solenoid valve in this embodiment three;

[0027] Figure 10 This is a diagram showing the first usage state of a solenoid valve in this embodiment three;

[0028] Figure 11 This is a diagram showing the second usage state of a solenoid valve in this embodiment three;

[0029] The reference numerals in the figure are as follows: 1-valve body, 1A-top cover, 1B-base, 100-valve cavity, 101-first channel, 102-second channel, 103-connection channel, 104-gap, 2-valve core, 200-protrusion, 201-head, 202-tail, 3-cover, 4-magnet, 5-coil, 6-metal spring, 600-main body, 601-connection, 602-cantilever, 603-connection hole, 7-magnetic sheet, 8-magnetic suction sheet. Detailed Implementation

[0030] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0031] Example 1:

[0032] In this embodiment, refer to Figure 1 - Figure 3 A specific implementation of the solenoid valve includes a valve body 1 and a valve mechanism disposed within the valve body 1. The valve body 1 has a first channel 101 and a second channel 102 for communicating with the outside. The first channel 101 and the second channel 102 are connected by a valve cavity 100. The valve mechanism includes a valve core 2 for isolating the valve cavity 100 and an electromagnetic structure for driving the valve core 2 to move. The electromagnetic structure includes a cover 3, a magnet 4, and a coil 5. The magnet 4 is installed inside the cover 3, and a gap 104 is provided between the inner wall of the cover 3 and the magnet 4. The coil 5 is suspended in the gap 104 by a metal spring 6, and the valve core 2 is mounted on the metal spring 6.

[0033] In this embodiment, the first channel 101 is configured as an inlet, and the second channel 102 is used as an outlet. Conversely, when the first channel 101 is used as an outlet, the second channel 102 is correspondingly converted into an inlet. Furthermore, in this embodiment, the solenoid valve is specifically referred to as an air valve for the sake of subsequent detailed description.

[0034] like Figure 1 As shown, the first channel 101 passes through the cover 3 and the magnet 4 and connects to the valve cavity 100. The valve core 2 abuts against the end of the first channel 101, isolating the first channel 101 from the valve cavity 100. When the solenoid valve opens the valve core 2, external gas enters the valve cavity 100 through the first channel 101 in the middle of the magnet 4. During this process, the gas passes through both sides of the coil 5 in sequence and is finally output from the second channel 102. When the gas passes through the magnet 4 and the coil 5, it can carry away the heat generated thereon. This active heat dissipation method can quickly dissipate heat from the electromagnetic structure, thereby ensuring that the solenoid valve can operate stably for a long time.

[0035] The metal spring 6 is provided with four connection holes 603. When the electromagnetic structure drives the valve core 2 to separate from the first channel 101, external gas will enter the valve cavity 100 from the first channel 101 in the middle of the magnet 4. During this process, as mentioned above, the gas input from the first channel 101 will pass through both sides of the coil 5 and carry away the heat from the magnet 4 and the coil 5. The connection holes 603 allow most of the gas to directly enter the valve cavity 100 through the connection holes 603 of the metal spring 6, thereby reducing the pressure exerted by the gas on the metal spring 6, effectively reducing the kinetic energy driving the metal spring 6 and the coil 5, and thus extending the service life of the solenoid valve. In addition, the four connection holes 603 of the metal spring 6 are evenly distributed, ensuring the balance of gas flow and further improving the working stability of the solenoid valve. The design of the connection holes 603 on the metal spring 6 not only optimizes the gas flow path but also enhances the stability and durability of the structure. When valve core 2 is fully open, the smooth flow of gas ensures the efficient operation of the solenoid valve. At the same time, due to the effective dissipation of heat, the operating temperature of the solenoid valve is maintained within a safe range, thereby extending its service life.

[0036] When the solenoid valve is closed, the valve core 2 is tightly abutted against the end of the first channel 101, effectively preventing gas leakage and ensuring the sealing performance of the solenoid valve. When the solenoid valve needs to be opened, the electromagnetic structure drives the valve core 2 to separate from the first channel 101, allowing gas to smoothly enter the valve cavity 100 and be output through the second channel 102. In this process, the flow of gas not only realizes the opening and closing function of the solenoid valve, but also simultaneously dissipates heat from the electromagnetic structure, achieving efficient energy utilization.

[0037] The design of the connection hole 603 allows gas to flow more smoothly through the metal spring 6, reducing the resistance to gas flow and improving the working efficiency of the solenoid valve.

[0038] Furthermore, a protrusion 200 is provided around the bottom of the valve core 2 along the outer edge of the first channel 101, with the end of the protrusion 200 away from the valve core 2 arranged in an arc shape. When the valve core 2 is in the closed state with the first channel 101, the protrusion 200 can fit tightly against the outer edge of the first channel 101, further enhancing the sealing effect of the solenoid valve. In addition, the arc-shaped design of the protrusion 200 not only optimizes the contact area between the valve core 2 and the first channel 101, but also reduces the frictional resistance of the valve core 2 during movement, making the opening and closing of the valve core 2 smoother, further improving the response speed and stability of the solenoid valve. At the same time, the arc-shaped design can also guide gas to enter the valve cavity 100 more smoothly when the valve core 2 is open, reducing gas turbulence and further improving the working efficiency of the solenoid valve.

[0039] The metal spring 6 comprises a main body 600 and a connecting part 601 fixed to the valve body 1. The connecting part 601 is connected to the main body 600 via several cantilever arms 602. The coil 5 and the valve core 2 are both mounted on the main body 600. The connecting part 601 suspends the main body 600 inside the valve body 1 using several cantilever arms 602, allowing the coil 5 to maintain a distance from the magnet 4 and the cover 3, avoiding contact friction between the coil 5 and the magnet 4 or the cover 3, thus completely solving the wear and noise problems of the solenoid valve. At the same time, the low-resistance structure of the valve core 2 can significantly reduce the power of the electromagnetic structure, effectively reducing heat generation and energy consumption. In addition, the use of several cantilever arms 602 to support and connect the main body 600 allows the metal spring 6 to have a certain elastic deformation when subjected to gas pressure, thereby buffering the impact force of the gas and protecting the electromagnetic structure and the valve core 2 from damage.

[0040] The valve body 1 is composed of an upper cover 1A and a base 1B, and the connecting part 601 is disposed between the upper cover 1A and the base 1B. Since the spring of this invention is made of metal, its sealing performance is relatively insufficient compared to the silicone components of the prior art. Therefore, to ensure the stability of the solenoid valve, it is usually necessary to add waterproof filler (adhesive or silicone plastic material) between the upper cover 1A and the base 1B to improve the waterproof performance of the solenoid valve and prevent moisture from entering the solenoid valve and causing short circuits or damage.

[0041] The solenoid valve in this embodiment is generally used in pneumatic systems. If it is to be used in oil or liquid systems, the internal structure of the valve body 1 needs to be processed accordingly (e.g., rubber coating process, metal surface post-treatment, etc.) to ensure that the electromagnetic structure is not affected by the corrosion of special media.

[0042] A magnetic conductive sheet 7 is provided at the upper end of the magnet 4. The magnetic conductive sheet 7, made of iron-nickel magnetic material, constrains the magnetic field lines of the magnet 4 in the gap 104 between the cover 3 and the magnet 4, so that the magnetic field lines of the magnet 4 can be concentrated on the coil 5, which greatly reduces magnetic leakage, improves the magnetic field utilization rate of the coil 5, reduces the number of turns of the coil 5, reduces power consumption, and effectively solves the heat generation problem of the solenoid valve. At the same time, the cover 3 can effectively isolate the external magnetic field, avoid interference to the internal electromagnetic structure, and ensure the stability of the solenoid valve's operation.

[0043] Furthermore, a magnetic chuck 8 is installed on the metal spring 6 to cooperate with the magnet 4. When the solenoid valve is de-energized, the magnet 4 attracts the magnetic chuck 8, causing it to tightly press the valve core 2 on the metal spring 6 against the end of the first channel 101, ensuring that the solenoid valve maintains good sealing performance even when de-energized. This design not only enhances the reliability of the solenoid valve but also effectively avoids accidental gas leakage due to power failure, improving overall safety. The magnetic chuck 8 is made of magnetic materials such as iron-nickel.

[0044] Compared to existing technologies, this invention integrates some components of the original cover and sealing element into a metal spring 6. The coil 5 and valve core 2 are directly suspended and supported by the metal spring 6, thereby simplifying the overall structure of the solenoid valve, reducing the number of parts, and lowering manufacturing costs. At the same time, the metal spring structure not only ensures the stability of the coil 5 and valve core 2 during use, but also significantly improves the durability of the solenoid valve.

[0045] Example 2:

[0046] like Figure 4-6 As shown, the difference between this embodiment and Embodiment 1 is that the solenoid valve is a two-way valve, wherein the first channel 101 serves as the outlet, and the second channel 102 is used to connect to an external air source. Furthermore, a connecting channel 103 for connecting to an external pneumatic working device is provided on one side of the valve body 1. This connecting channel 103 is connected to the valve cavity 100. Additionally, the upper and lower ends of the valve core 2 are respectively provided with a head 201 and a tail 202, which are used to isolate the second channel 102 and the first channel 101, respectively. In practical applications, the first channel 101 in this embodiment mainly serves a pressure relief function.

[0047] When the electromagnetic structure drives the valve core 2 to move upward, the head 201 of the valve core 2 disconnects the connection between the second channel 102 and the valve cavity 100. At this time, the connecting channel 103 is connected to the first channel 101 through the valve channel. When the electromagnetic structure drives the valve core 2 to move downward, the tail 202 of the valve core 2 disconnects the connection between the first channel 101 and the valve cavity 100. At this time, the connecting channel 103 is connected to the second channel 102 through the valve channel, thus forming a two-way valve working mode. Under this design, the solenoid valve can flexibly select the first channel 101 or the second channel 102 as the gas output path according to the driving direction of the electromagnetic structure, realizing more diversified gas control functions.

[0048] Example 3:

[0049] like Figure 7-11 As shown, the difference between this embodiment and Embodiment 1 is that the valve body 1 of the solenoid valve has two interconnected valve cavities 100, and correspondingly has two valve mechanisms and two first channels 101. One of the first channels 101 serves as an inlet connected to an external air source, and is equipped with a magnetic suction plate 8. The other first channel 101 does not have a magnetic suction plate 8 and serves as an outlet. One end of the valve body 1 is provided with a second channel 102 for connecting to external pneumatic working equipment.

[0050] When the inlet valve mechanism is activated, external high-pressure gas first enters the valve cavity 100 through the first inlet channel 101, and then is input to the external pneumatic working device through the second channel 102, thereby driving the external pneumatic working device to work. During this process of inputting high-pressure gas, since the gas pressure direction corresponds to the first outlet channel 101, the outlet valve mechanism can achieve a normally closed state without the need for the magnetic suction plate 8. In this embodiment, the first outlet channel 101 serves as an exhaust channel. When it is necessary to discharge the high-pressure gas from the valve cavity 100, the corresponding outlet valve mechanism is activated, and the gas can be discharged through the first outlet channel 101.

[0051] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Although the present utility model has been disclosed above with reference to a preferred embodiment, it is not intended to limit the present utility model. Any person skilled in the art can make some changes or modifications to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present utility model. Any simple modifications, equivalent changes, and modifications made to the above embodiments based on the present utility model without departing from the scope of the present utility model shall fall within the scope of the present utility model.

Claims

1. A solenoid valve, comprising a valve body (1) and a valve mechanism disposed within the valve body (1), wherein the valve body (1) is provided with a first channel (101) and a second channel (102) for communicating with the outside, the first channel (101) and the second channel (102) being connected via a valve cavity (100), the valve mechanism comprising a valve core (2) for isolating the valve cavity (100) and an electromagnetic structure for driving the valve core (2) to move, the electromagnetic structure comprising a cover (3), a magnet (4) and a coil (5), characterized in that: The magnet (4) is installed inside the cover (3), and a gap (104) is provided between the inner wall of the cover (3) and the magnet (4). The coil (5) is suspended in the gap (104) by a metal spring (6), and the valve core (2) is installed on the metal spring (6).

2. The solenoid valve according to claim 1, characterized in that: The first channel (101) passes through the cover (3) and the magnet (4) and is connected to the valve cavity (100). The valve core (2) abuts against the end of the first channel (101), thereby separating the first channel (101) and the valve cavity (100).

3. The solenoid valve according to claim 2, characterized in that: The metal spring (6) is provided with a plurality of connection holes (603).

4. The solenoid valve according to claim 2, characterized in that: The bottom of the valve core (2) is provided with a protrusion (200) around the outer edge of the first channel (101), and the end of the protrusion (200) away from the valve core (2) is arranged in an arc shape.

5. The solenoid valve according to claim 1, characterized in that: The metal spring (6) consists of a main body (600) and a connecting part (601) fixed on the valve body (1). The connecting part (601) is connected to the main body (600) through a plurality of cantilever (602). The coil (5) and the valve core (2) are both mounted on the main body (600).

6. The solenoid valve according to claim 5, characterized in that: The valve body (1) is composed of an upper cover (1A) and a base (1B), and the connecting part (601) is disposed between the upper cover (1A) and the base (1B).

7. The solenoid valve according to claim 1, characterized in that: A magnetic conductive sheet (7) is provided at the upper end of the magnet (4).

8. The solenoid valve according to claim 1, characterized in that: The valve body (1) has a connection channel (103) on one side that communicates with the outside, and the connection channel (103) is connected to the valve cavity (100).

9. A solenoid valve according to claim 8, characterized in that: The valve core (2) has a head (201) and a tail (202) at its upper and lower ends, respectively. The head (201) and tail (202) are used to isolate the first channel (101) and the second channel (102), respectively.

10. A solenoid valve according to any one of claims 1-9, characterized in that: The metal spring (6) is equipped with a magnetic absorbing piece (8) for cooperating with the magnet (4).

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