A solenoid valve coil and a solenoid valve

Abstract

This utility model provides an electromagnetic valve coil and an electromagnetic valve, including a frame with a vertically arranged mounting channel at its center. A stationary iron core assembly and a moving iron core assembly are mounted on the mounting channel and fixed in position relative to it. The moving iron core assembly is movably disposed within the mounting channel. An iron frame is provided outside the frame, and a sealed coil is provided outside the iron frame. The sealed coil includes an outer sealed portion that covers the outer periphery of the iron frame and an inner sealed portion located between the iron frame and the frame to fix them together. After the frame and iron frame are assembled, they are placed in a mold and sealed with adhesive to form the sealed coil. The sealed coil protects the iron frame, isolates it from water, provides good waterproofing, and prevents the surface of the iron frame from rusting.

Description

Technical Field

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

[0002] Solenoid valves are electromagnetically controlled industrial devices, fundamental components of automation used to control fluids. They are actuators, but not limited to hydraulic or pneumatic systems. Used in industrial control systems to adjust the direction, flow rate, speed, and other parameters of the medium. Solenoid valves can be used with different circuits to achieve the desired control, ensuring both precision and flexibility. There are many types of solenoid valves, each playing a different role in the control system.

[0003] For example, the utility model patent with authorization publication number CN210800212U discloses a pulse solenoid valve coil, which is a conventional solenoid valve coil structure. It includes an upper iron part and a lower iron part, which are connected to form the outer shell of the solenoid valve coil. The inner shell of the outer shell forms a hollow cavity, and a sealed coil and a vertically arranged channel are arranged in the hollow cavity. The sealed coil is located outside the channel. Since the iron part is set outside the sealed coil, the iron part is easy to come into contact with water, which will lead to the iron part failing the salt spray test. At the same time, the iron part is riveted outside the sealed coil, which is prone to defects such as poor riveting, resulting in the iron part loosening and falling off. Utility Model Content

[0004] The purpose of this invention is to overcome the shortcomings and deficiencies of the existing technology and to provide a solenoid valve coil and a solenoid valve.

[0005] The technical solution adopted by this utility model is as follows: The first aspect of this utility model provides an electromagnetic valve coil, including a frame. A vertically arranged mounting channel is provided at the center of the frame. A stationary iron core assembly and a moving iron core assembly are provided on the mounting channel. The stationary iron core assembly is mounted on the mounting channel and its position is fixed relative to the mounting channel. The moving iron core assembly is movably disposed within the mounting channel. The skeleton is provided with an iron frame, and the iron frame is provided with a sealing coil. The sealing coil includes an outer sealing part that covers the outer periphery of the iron frame and an inner sealing part located between the iron frame and the skeleton to fix the two.

[0006] Preferably, the iron frame includes an upper plate, a lower plate, and a vertical plate. The upper plate and the lower plate are arranged in parallel. The vertical plate is located between the upper plate and the lower plate, connecting them and forming a first slot that matches the shape of the frame. The frame is inserted into the first mounting slot. The upper plate and the lower plate are respectively fitted and cooperated with the upper and lower ends of the frame to restrict the vertical movement of the frame.

[0007] Preferably, the upper and lower ends of the frame are provided with two positioning protrusions arranged on both sides of the installation channel and parallel to each other. The positioning protrusions extend along the direction in which the frame is inserted into the first slot. The two positioning protrusions at the upper and lower ends of the frame respectively form an upper positioning groove and a lower positioning groove that are adapted to the shape of the upper plate and the lower plate. The upper plate and the lower plate are respectively inserted into the upper positioning groove and the lower positioning groove.

[0008] Preferably, the upper and lower ends of the skeleton are respectively provided with upper positioning protrusions and lower positioning protrusions that abut against the upper and lower positioning grooves, corresponding to the entry ends of the upper and lower plate parts into the upper and lower positioning grooves.

[0009] Preferably, the stationary iron core assembly includes a first stationary iron core and a second stationary iron core, both of which are annular structures and respectively have a first central through hole and a second central through hole. The outer periphery of the upper end of the first stationary iron core and the outer periphery of the lower end of the second stationary iron core have a first abutting ring portion and a second abutting ring portion extending outward, respectively. The installation channel includes, from top to bottom, a first hole, a second hole, and a third hole arranged concentrically. The dimensions of the first hole and the third hole are larger than those of the second hole, and they respectively form a first limiting step and a second limiting step with the second hole. The lower end of the first stationary iron core is located inside the second hole, and the first abutting ring is located inside the first hole with its lower end face abutting against the first limiting step. The upper end of the second stationary iron core is located inside the second hole, and the second abutting ring is located inside the third hole, with its upper end face abutting against the second limiting step.

[0010] Preferably, the lower end face of the upper plate portion abuts against the upper end face of the first abutting ring portion to restrict the upward movement of the first stationary iron core. The upper end face of the lower plate portion abuts against the lower end face of the second abutting ring portion to restrict the downward movement of the second stationary iron core.

[0011] Preferably, the upper plate and the lower plate are further provided with through holes that are concentric with and communicate with the mounting channel.

[0012] A second aspect of this utility model provides a solenoid valve, comprising a valve body, a valve core sleeve, and the aforementioned solenoid valve coil. The valve core sleeve includes a base portion and a core sleeve portion located at the center of the base portion and protruding upwards. The core sleeve portion is a cylindrical structure with a sealed upper end and an open lower end. The core sleeve portion passes through the perforation into the installation channel and forms an internal and external fit with the first central through hole and the second central through hole. The moving iron core assembly includes a moving iron core and a spring. The moving iron core passes through the lower end opening of the core sleeve and slides along the inner cavity of the core sleeve. The spring is located between the upper end of the moving iron core and the upper end seal of the core sleeve and is connected to both. The base portion has a connecting groove adapted to the shape of the encapsulated coil, the encapsulated coil is located in the connecting groove, and the base portion is fixedly connected to the valve body and the encapsulated coil respectively.

[0013] Preferably, the outer peripheral wall of the encapsulated coil is provided with a protruding buckle relative to the inner wall of the connecting groove, and the inner wall of the connecting groove is correspondingly provided with a slot. The buckle extends into the slot so that the encapsulated coil and the base form a buckle-fit connection structure.

[0014] Preferably, the base portion is fixedly connected to the valve body via a threaded connection.

[0015] The beneficial effects of this utility model are as follows: After the skeleton and iron frame are assembled, they are placed in the mold and encapsulated with glue to form a sealed coil. The sealed coil protects the iron parts, isolates the iron frame from water, has good waterproof performance, and the surface of the iron frame is not easy to rust. At the same time, the glue is filled between the iron frame and the skeleton, and after solidification, the iron frame and the skeleton directly form an integral whole. Compared with the traditional form of riveting the iron parts to the outside of the skeleton and the sealed coil, it has strong stability and is easy to process. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, obtaining other drawings based on these drawings without creative effort still falls within the scope of this utility model.

[0017] Figure 1 This is an overall structural diagram of Embodiment 1 of the present utility model; Figure 2 This is a front sectional view of Embodiment 1 of the present invention; Figure 3 This is a diagram showing the connection and fit between the skeleton and the iron frame in Embodiment 1 of this utility model; Figure 4 This is a bottom view of the connection and fit between the skeleton and the iron frame in Embodiment 1 of this utility model; Figure 5 for Figure 2 Enlarged view of the structure at point A in the middle; Figure 6 for Figure 2 Enlarged view of the structure at point B in the middle; Figure 7 This is an overall structural diagram of Embodiment 2 of the present invention; Figure 8 This is a front sectional view of Embodiment 2 of the present invention; Figure 9 for Figure 8 Enlarged view of the structure at point C; In the diagram, 1. Skeleton; 2. Iron frame; 4. Valve body; 5. Valve core sleeve; 6. Sealed coil; 11. Mounting channel; 12. Positioning protrusion; 13. Upper positioning groove; 14. Lower positioning groove; 15. Upper positioning protrusion; 16. Lower positioning protrusion; 21. Upper plate; 22. Lower plate; 23. Vertical plate; 24. First mounting groove; 31. First stationary iron core; 32. Second stationary iron core; 51. Base; 52. Core sleeve; 61. 62. Outer plastic sealing part; 71. Inner plastic sealing part; 72. Moving iron core; 73. Spring; 111. First hole; 112. Second hole; 113. Third hole; 114. First limiting step; 115. Second limiting step; 211. Through hole; 311. First abutting ring; 312. First central through hole; 321. First abutting ring; 322. Second central through hole; 511. Connecting groove; 512. Slot; 611. Buckle. Detailed Implementation

[0018] To make the objectives, technical solutions and advantages of this utility model clearer, the utility model will be described in further detail below with reference to the accompanying drawings.

[0019] It should be noted that all uses of "first" and "second" in the embodiments of this utility model are for the purpose of distinguishing two entities or parameters with the same name but different names. It is clear that "first" and "second" are only for the convenience of expression and should not be construed as limiting the embodiments of this utility model. Subsequent embodiments will not explain this in detail.

[0020] The directional and positional terms used in this utility model, such as "up," "down," "front," "back," "left," "right," "inner," "outer," "top," "bottom," and "side," are merely for reference to the accompanying drawings. Therefore, the directional and positional terms used are for the purpose of explaining and understanding this utility model, and not for limiting the scope of protection of this utility model.

[0021] Example 1 like Figures 1 to 6 As shown in the illustration, an embodiment of this utility model provides a solenoid valve coil, comprising a frame 1. The frame 1 has a vertically arranged mounting channel 11 at its center. A stationary iron core assembly and a moving iron core assembly are mounted on the mounting channel 11 and fixed in position relative to it. The moving iron core assembly is movably disposed within the mounting channel 11. The skeleton 1 is provided with an iron frame 2, and the iron frame 2 is provided with a sealing coil 6. The sealing coil 6 includes an outer sealing part 61 that covers the outer periphery of the iron frame 2 and an inner sealing part 62 located between the iron frame 2 and the skeleton 1 to fix the two.

[0022] With this setup, after the skeleton and iron frame are assembled, they are placed in a mold and encapsulated with glue to form a sealed coil. The sealed coil protects the iron parts, isolates the iron frame from water, has good waterproof properties, and the surface of the iron frame is not easy to rust. At the same time, the glue is filled between the iron frame and the skeleton, and after solidification, the iron frame and the skeleton directly form an integral whole. Compared with the traditional method of riveting the iron parts to the outside of the skeleton and the sealed coil, this method has strong stability and is easy to process.

[0023] The iron frame 2 includes an upper plate 21, a lower plate 22, and a vertical plate 23. The upper plate 21 and the lower plate 22 are arranged in parallel. The vertical plate 23 is located between the upper plate 21 and the lower plate 22, connecting the two and forming a first slot 24 that is adapted to the shape of the frame 1. The frame 1 is inserted into the first mounting slot 24. The upper plate 21 and the lower plate 22 are respectively fitted and cooperated with the upper and lower ends of the frame 1 to restrict the vertical movement of the frame 1.

[0024] With this design, the skeleton can be inserted into the first slot along the opening of the iron frame for assembly, improving the ease of assembly.

[0025] The frame 1 has two positioning protrusions 12 arranged on both sides of the installation channel 11 and parallel to each other at its upper and lower ends. The positioning protrusions 12 extend along the direction in which the frame 1 is inserted into the first slot 24. The two positioning protrusions 12 at the upper and lower ends of the frame 1 form an upper positioning groove 13 and a lower positioning groove 14 that are adapted to the shape of the upper plate 21 and the lower plate 22, respectively. The upper plate 21 and the lower plate 22 are respectively inserted into the upper positioning groove 13 and the lower positioning groove 14.

[0026] This design improves the ease of assembling the skeleton and the iron frame, while ensuring the stability of the fit between the two before potting and sealing.

[0027] The upper and lower ends of the frame 1, corresponding to the upper plate 21 and lower plate 22, are respectively provided with upper positioning protrusions 15 and lower positioning protrusions 16 that abut against them.

[0028] This setting allows the upper and lower positioning protrusions to determine the insertion depth of the iron frame, further improving the ease of assembling the skeleton and the iron frame.

[0029] The stationary iron core assembly includes a first stationary iron core 31 and a second stationary iron core 32. Both the first stationary iron core 31 and the second stationary iron core 32 are annular structures and have a first central through hole 312 and a second central through hole 322, respectively. The upper outer periphery of the first stationary iron core 31 and the lower outer periphery of the second stationary iron core 32 respectively have a first abutting ring portion 311 and a second abutting ring portion 321 extending outward. The installation channel 11 includes, from top to bottom, a first hole 111, a second hole 112, and a third hole 113 arranged concentrically. The dimensions of the first hole 111 and the third hole 113 are larger than those of the second hole 112, and they respectively form a first limiting step 114 and a second limiting step 115 with the second hole 112. The lower end of the first stationary iron core 31 is located inside the second hole 112, and the first abutting ring 311 is located inside the first hole 111 with its lower end face abutting against the first limiting step 114. The upper end of the second stationary iron core 32 is located inside the second hole 112, and the second abutting ring 321 is located inside the third hole 113 and its upper end face abuts against the second limiting step 115.

[0030] This design improves the ease of assembling the static iron core assembly.

[0031] The lower end face of the upper plate portion 21 abuts against the upper end face of the first abutting ring portion 311 to restrict the upward movement of the first stationary iron core 31. The upper end face of the lower plate portion 22 abuts against the lower end face of the second abutting ring portion 321 to restrict the downward movement of the second stationary iron core 32.

[0032] With this setup, the first and second stationary iron cores are installed into the frame mounting channel before being assembled with the iron frame, ensuring a stable fit between the four components and preventing them from falling apart, thus further improving the ease of assembly.

[0033] The upper plate 21 and the lower plate 22 are also provided with through holes 211 that are concentric with and connected to the mounting channel 11.

[0034] This design allows for perforations that facilitate demolding and glue application, while the perforations on the lower plate also facilitate the installation of the moving iron core assembly.

[0035] Example 2 like Figures 7-9 The image shows a solenoid valve in this embodiment, including a valve body 4, a valve core sleeve 5, and the solenoid valve coil of Embodiment 1. The valve core sleeve 5 includes a base portion 51 and a core sleeve portion 52 located at the center of the base portion 51 and protruding upward. The core sleeve portion 52 is a cylindrical structure with a closed upper end and an open lower end. The core sleeve portion 52 passes through the through hole 211 into the installation channel 11 and forms an internal and external fit with the first central through hole 312 and the second central through hole 322. The moving iron core assembly includes a moving iron core 71 and a spring 72. The moving iron core 71 passes through the lower opening of the core sleeve 52 and slides along the inner cavity of the core sleeve 52. The spring 72 is located between the upper end of the moving iron core 71 and the upper end seal of the core sleeve 52 and is connected to both. The base portion 51 has a connecting groove 511 that is adapted to the shape of the encapsulated coil 6. The encapsulated coil 6 is located in the connecting groove 511. The base portion 51 is fixedly connected to the valve body 4 and the encapsulated coil 6 respectively.

[0036] This setting makes the connection between the valve core sleeve and the encapsulated coil more secure.

[0037] The outer peripheral wall of the encapsulated coil 6 is provided with a protruding buckle 611 relative to the inner wall of the connecting groove 511, and the inner wall of the connecting groove 511 is correspondingly provided with a slot 512. The buckle 611 extends into the slot 512 so that the encapsulated coil 6 and the base part 51 form a buckle-fit connection structure.

[0038] This design improves the ease of connecting the encapsulated coil to the valve core sleeve.

[0039] The base portion 51 is fixedly connected to the valve body 4 by a threaded connection.

[0040] This design allows threaded parts to be directly screwed onto the valve core sleeve and connected to the valve body, thus promoting fully automated assembly. Compared to the conventional method of installing valve core sleeves by screwing them onto iron parts, directly screwing them onto the valve core sleeve is more convenient and easier to install.

[0041] The above-disclosed embodiments are merely preferred embodiments of the present utility model and should not be construed as limiting the scope of the present utility model. Therefore, any equivalent variations made in accordance with the claims of the present utility model shall still fall within the scope of the present utility model.

Claims

1. A solenoid valve coil, comprising a frame (1), wherein a vertically arranged mounting channel (11) is provided at the center of the frame (1), a stationary iron core assembly and a moving iron core assembly are provided on the mounting channel (11), the stationary iron core assembly is mounted on the mounting channel (11) and fixed in position relative to it, and the moving iron core assembly is movably disposed within the mounting channel (11), characterized in that: The skeleton (1) is provided with an iron frame (2), and the iron frame (2) is provided with a sealing coil (6). The sealing coil (6) includes an outer sealing part (61) that covers the outer periphery of the iron frame (2) and an inner sealing part (62) located between the iron frame (2) and the skeleton (1) to fix the two.

2. An electromagnetic valve coil according to claim 1, characterized in that: The iron frame (2) includes an upper plate (21), a lower plate (22) and a vertical plate (23). The upper plate (21) and the lower plate (22) are arranged in parallel. The vertical plate (23) is located between the upper plate (21) and the lower plate (22), connecting the two and forming a first slot (24) that is adapted to the shape of the skeleton (1). The skeleton (1) is inserted into the first mounting slot (24). The upper plate (21) and the lower plate (22) are respectively fitted and cooperated with the upper and lower ends of the skeleton (1) to restrict the vertical movement of the skeleton (1).

3. An electromagnetic valve coil according to claim 2, characterized in that: The frame (1) is provided with two positioning protrusions (12) arranged on both sides of the installation channel (11) and parallel to each other. The positioning protrusions (12) extend along the direction in which the frame (1) is inserted into the first slot (24). The two positioning protrusions (12) at the upper and lower ends of the frame (1) respectively form an upper positioning groove (13) and a lower positioning groove (14) that are adapted to the shape of the upper plate (21) and the lower plate (22). The upper plate (21) and the lower plate (22) are respectively inserted into the upper positioning groove (13) and the lower positioning groove (14).

4. An electromagnetic valve coil according to claim 3, characterized in that: The upper and lower ends of the skeleton (1) are respectively provided with upper positioning protrusion (15) and lower positioning protrusion (16) that abut against the upper plate (21) and lower plate (22) into the upper positioning groove (13) and lower positioning groove (14).

5. An electromagnetic valve coil according to claim 2, wherein: The stationary iron core assembly includes a first stationary iron core (31) and a second stationary iron core (32). Both the first stationary iron core (31) and the second stationary iron core (32) are annular structures and have a first central through hole (312) and a second central through hole (322) respectively. The upper outer periphery of the first stationary iron core (31) and the lower outer periphery of the second stationary iron core (32) have a first abutting ring (311) and a second abutting ring (321) extending outward respectively. The installation channel (11) includes, from top to bottom, a first hole (111), a second hole (112), and a third hole (113) arranged concentrically. The first hole (111) and the third hole (113) are larger than the second hole (112) and form a first limiting step (114) and a second limiting step (115) with it, respectively. The lower end of the first stationary iron core (31) is located inside the second hole (112), and the first abutting ring (311) is located inside the first hole (111) with its lower end face abutting against the first limiting step (114). The upper end of the second stationary iron core (32) is located inside the second hole (112), and the second abutting ring (321) is located inside the third hole (113) with its upper end face abutting against the second limiting step (115).

6. An electromagnetic valve coil according to claim 5, characterized in that: The lower end face of the upper plate (21) abuts against the upper end face of the first abutting ring (311) to restrict the upward movement of the first stationary iron core (31). The upper end face of the lower plate (22) abuts against the lower end face of the second abutting ring (321) to restrict the downward movement of the second stationary iron core (32).

7. An electromagnetic valve coil according to claim 5, wherein: The upper plate (21) and lower plate (22) are also provided with through holes (211) that are concentric with and connected to the mounting channel (11).

8. A solenoid valve, characterized in that: Includes a valve body (4), a valve core sleeve (5), and a solenoid valve coil as described in claim 7. The valve core sleeve (5) includes a base portion (51) and a core sleeve portion (52) located at the center of the base portion (51) and protruding upward. The core sleeve portion (52) is a cylindrical structure with a closed upper end and an open lower end. The core sleeve portion (52) passes through the through hole (211) into the installation channel (11) and forms an internal and external fit with the first central through hole (312) and the second central through hole (322). The moving iron core assembly includes a moving iron core (71) and a spring (72). The moving iron core (71) passes through the lower opening of the core sleeve (52) and enters the inner cavity of the core sleeve (52), and can slide along the inner cavity of the core sleeve (52). The spring (72) is located between the upper end of the moving iron core (71) and the upper end of the core sleeve (52) and is connected to both. The base part (51) has a connecting groove (511) adapted to the shape of the sealed coil (6), the sealed coil (6) is located in the connecting groove (511), and the base part (51) is fixedly connected to the valve body (4) and the sealed coil (6) respectively.

9. A solenoid valve according to claim 8, characterized in that: The outer peripheral wall of the sealed coil (6) is provided with a protruding buckle (611) relative to the inner wall of the connecting groove (511). The inner wall of the connecting groove (511) is provided with a corresponding slot (512). The buckle (611) extends into the slot (512) so that the sealed coil (6) and the base part (51) form a buckle-fit connection structure.

10. A solenoid valve according to claim 8, characterized in that: The base (51) and the valve body (4) are fixedly connected by threaded parts.

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