High-precision movable iron core of electromagnetic pilot head
By combining the high-precision solenoid pilot head with the iron core of the pagoda spring and the O-ring, the shortcomings in the fluid control accuracy and response speed of the solenoid valve pilot head are solved, high-precision fluid control and rapid response are achieved, and the stability and safety of the system are improved.
Patent Information
- Application Number
- CN202422265380.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-14
- Publication Date
- 2025-07-18
- Estimated Expiration
- 2034-09-14
AI Technical Summary
The existing solenoid valve pilot heads have shortcomings in fluid control accuracy and response speed, especially in cases where high precision is required, and mechanical and electronic control methods have problems such as complex structure, difficulty in maintenance and limited performance.
It adopts a high-precision electromagnetic pilot head moving core, combining pagoda spring, inner spring and multiple O-rings to achieve high-precision position control and fluid flow control, with fast response capabilities, and provides good sealing performance through multiple O-rings to reduce fluid leakage.
It realizes high-precision fluid control and rapid response, improves the efficiency and safety of the system, ensures long-term stable operation, and reduces fluid leakage.
Smart Images
Figure CN223120791U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of solenoid valve pilot heads, and particularly to a moving iron core of a high-precision electromagnetic pilot head. Background Technique
[0002] The solenoid valve pilot head, as an important part of the solenoid valve, is usually used to control the movement of the main spool of the solenoid valve. It generates movement by electromagnetic force, and controls the opening and closing of the main spool by changing the state of the internal channel of the pilot head, thereby realizing the on-off control of the fluid medium.
[0003] Before the solenoid valve pilot head, the control system of the solenoid valve mainly relied on direct drive, mechanical control, electronic control and other auxiliary control components to realize the on-off control of the fluid.
[0004] First of all, the direct drive method may not be able to meet the requirements of fast-response fluid control, especially in occasions where high precision of fluid control is required;
[0005] Secondly, the mechanical control method has a complex structure and is difficult to maintain. Moreover, due to the friction and wear of mechanical components, its control precision and response speed may be affected;
[0006] Finally, compared with the direct drive and mechanical control methods, the electronic control method has improved in terms of response speed, but it is still limited by the performance of the electromagnet and the complexity of the system.
[0007] Therefore, there is an urgent need for a moving iron core of a high-precision electromagnetic pilot head to solve the above problems. Content of the Utility Model
[0008] The purpose of the utility model is to provide a moving iron core of a high-precision electromagnetic pilot head. During the actual use process, under the action of the pagoda spring, the inner spring and precise seals (O-ring 1, O-ring 2, O-ring 3, O-ring 4), the moving iron core of the electromagnetic pilot head can achieve higher-precision position control and fluid flow control. Compared with other control methods, the moving iron core of the electromagnetic pilot head meets the requirements of occasions with high precision of fluid control; the moving iron core of the electromagnetic pilot head has a fast response speed. When the control signal arrives, the moving iron core can move quickly, thereby realizing the flow of the fluid; by using multiple O-rings (O-ring 1, O-ring 2, O-ring 3, O-ring 4) for sealing, the moving iron core of the electromagnetic pilot head can provide better sealing performance in the closed state, reduce fluid leakage, improve the efficiency and safety of the system, enable the moving iron core of the electromagnetic pilot head to maintain stable performance, and ensure the long-term stable operation of the system, thus solving the problems in the background technique.
[0009] To achieve the above object, the present utility model provides the following technical solution: A moving iron core of a high-precision electromagnetic pilot head, including a static iron core, a copper sleeve is arranged on the surface of the static iron core, a moving iron core is arranged at the bottom of the inner cavity of the copper sleeve, a small plug is arranged at the top of the inner cavity of the moving iron core, a large plug is arranged at the bottom of the inner cavity of the moving iron core, an inner spring is fixedly connected to the opposite sides of the large plug and the small plug, a pressing plate is sleeved on the surface of the copper sleeve, a base is arranged at the bottom of the pressing plate, the bottom of the moving iron core extends into the inner cavity of the base, an O-ring III is sleeved on the bottom of the surface of the copper sleeve, the surface of the O-ring III is in contact with the base, and an O-ring I and an O-ring II are sleeved on the bottom of the base.
[0010] Further, a pagoda spring is sleeved on the surface of the moving iron core, and both ends of the pagoda spring are fixedly connected to the copper sleeve and the moving iron core respectively.
[0011] Further, an air inlet hole is opened at the center of the bottom of the base, the air inlet hole is respectively used in cooperation with the O-ring I and the large plug, an exhaust hole is opened at the bottom of the base, the exhaust hole is used in cooperation with the O-ring II, and the exhaust hole is communicated with the inner cavity of the base.
[0012] Further, two self-tapping screws are arranged through the top of the pressing plate, and the bottom ends of the self-tapping screws penetrate into the inner cavity of the base.
[0013] Further, an O-ring IV is sleeved on the surface of the static iron core, and the surface of the O-ring IV is in contact with the copper sleeve.
[0014] Compared with the prior art, the beneficial effects of the present utility model are as follows:
[0015] The moving iron core of a high-precision electromagnetic pilot head provided by the present utility model has the advantages of high precision and fast response. In the actual use process, under the action of the pagoda spring, the inner spring and precise seals (O-ring I, O-ring II, O-ring III, O-ring IV), the moving iron core of the electromagnetic pilot head can achieve higher-precision position control and fluid flow control. Compared with other control methods, the moving iron core of the electromagnetic pilot head meets the occasions with higher requirements for fluid control precision; the moving iron core of the electromagnetic pilot head has a relatively fast response speed. When the control signal arrives, the moving iron core can move quickly, so as to realize the flow of the fluid; by using multiple O-rings (O-ring I, O-ring II, O-ring III, O-ring IV) for sealing, the moving iron core of the electromagnetic pilot head can provide better sealing performance in the closed state, reduce fluid leakage, improve the efficiency and safety of the system, so that the moving iron core of the electromagnetic pilot head can maintain stable performance and ensure the long-term stable operation of the system. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Figure 1Schematic diagram of the structure of the present utility model;
[0017] Figure 2 Partial sectional view of the base of the present utility model;
[0018] Figure 3 Sectional view of the present utility model;
[0019] Figure 4 Partial sectional view of the static iron core, copper bushing and moving iron core of the present utility model;
[0020] Figure 5 Top view of the present utility model.
[0021] In the figure: 1, static iron core; 2, large plug; 3, small plug; 4, pressing plate; 5, copper bushing; 6, base; 7, exhaust hole; 8, O-ring I; 9, O-ring II; 10, moving iron core; 11, conical spring; 12, O-ring III; 13, inner spring; 14, self-tapping screw; 15, intake hole; 16, O-ring IV. Specific embodiments
[0022] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.
[0023] To solve the technical problems, as Figures 1-5 shown, the following preferred technical solutions are provided:
[0024] A moving iron core of a high-precision electromagnetic pilot head, comprising a static iron core 1, a copper bushing 5 is arranged on the surface of the static iron core 1, a moving iron core 10 is arranged at the bottom of the inner cavity of the copper bushing 5, a small plug 3 is arranged at the top of the inner cavity of the moving iron core 10, a large plug 2 is arranged at the bottom of the inner cavity of the moving iron core 10, an inner spring 13 is fixedly connected to the opposite sides of the large plug 2 and the small plug 3, a pressing plate 4 is sleeved on the surface of the copper bushing 5, a base 6 is arranged at the bottom of the pressing plate 4, the bottom of the moving iron core 10 extends into the inner cavity of the base 6, an O-ring III 12 is sleeved on the bottom surface of the copper bushing 5, the surface of the O-ring III 12 is in contact with the base 6, and an O-ring I 8 and an O-ring II 9 are sleeved on the bottom of the base 6.
[0025] Specifically, a conical spring 11 is sleeved on the surface of the moving iron core 10, and both ends of the conical spring 11 are fixedly connected to the copper bushing 5 and the moving iron core 10 respectively.
[0026] In this embodiment: Through the arrangement of the conical spring 11, when the moving iron core 10 moves, the conical spring 11 provides an initial restoring force for the moving iron core 10 to return the moving iron core 10 to its original position.
[0027] Specifically, an air inlet hole 15 is opened at the center of the bottom of the base 6. The air inlet hole 15 is used in cooperation with the first O-ring 8 and the large plug 2 respectively. An exhaust hole 7 is opened at the bottom of the base 6. The exhaust hole 7 is used in cooperation with the second O-ring 9. The exhaust hole 7 is communicated with the inner cavity of the base 6.
[0028] In this embodiment: Through the combined use of the exhaust hole 7 and the air inlet hole 15, the exhaust hole 7 is used to allow gases and liquids to pass through, and the air inlet hole 15 is used to adjust the internal pressure of the base 6.
[0029] Specifically, two self-tapping screws 14 are penetrated through the top of the pressing plate 4, and the bottom ends of the self-tapping screws 14 penetrate into the inner cavity of the base 6.
[0030] In this embodiment: Through the arrangement of the self-tapping screws 14, it is used to fix the relative positions of the pressing plate 4 and the base 6, and thus is also beneficial to positioning the copper bushing 5.
[0031] Specifically, a fourth O-ring 16 is sleeved on the surface of the static iron core 1, and the surface of the fourth O-ring 16 is in contact with the copper bushing 5.
[0032] In this embodiment: Through the arrangement of the fourth O-ring 16, it plays a role in improving the sealing performance between the static iron core 1 and the copper bushing 5, and preventing liquids or gases from passing through the gap between the static iron core 1 and the copper bushing 5.
[0033] The working principle and usage process of the present utility model: When in use, when the electromagnetic coil is energized, a strong electromagnetic force will be generated between the static iron core 1 and the moving iron core 10. This electromagnetic force will attract the moving iron core 10 to move towards the static iron core 1. Under the action of the electromagnetic force, the moving iron core 10 will move upward along the inner cavity of the copper bushing 5. This movement will compress the conical spring 11 to provide an initial restoring force for the moving iron core 10. Then when the moving iron core 10 moves, it will drive the large plug 2 and the small plug 3 to move together. Under the action of the inner spring 13, the relative position relationship between the large plug 2 and the small plug 3 is ensured. Further, under the action of the first O-ring 8 and the second O-ring 9, a sealing effect is provided for the base 6 to prevent gases or liquids from leaking. When the moving iron core 10 moves upward, the top of the air inlet hole 15 is in a flowing state, allowing gases or liquids to enter. At the same time, the exhaust hole 7 is in a flowing state to adjust the internal pressure. When the electromagnetic coil is de-energized, the restoring force of the conical spring 11 will return the moving iron core 10 to its original position. At this time, the large plug 2 will block the top of the air inlet hole 15 to prevent gases or liquids from flowing through.
[0034] It should be noted that in this text, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, such that a process, method, article or device comprising a series of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article or device.
[0035] Although embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.
Claims
1. A moving iron core of a high-precision electromagnetic pilot head, comprising a static iron core (1), characterized in that: A copper sleeve (5) is provided on the surface of the static iron core (1). A moving iron core (10) is provided at the bottom of the inner cavity of the copper sleeve (5). A small plug (3) is provided at the top of the inner cavity of the moving iron core (10). A large plug (2) is provided at the bottom of the inner cavity of the moving iron core (10). An inner spring (13) is fixedly connected to the opposite sides of the large plug (2) and the small plug (3). A pressing plate (4) is sleeved on the surface of the copper sleeve (5). A base (6) is provided at the bottom of the pressing plate (4). The bottom of the moving iron core (10) extends into the inner cavity of the base (6). An O-ring III (12) is sleeved on the bottom of the surface of the copper sleeve (5). The surface of the O-ring III (12) is in contact with the base (6). An O-ring I (8) and an O-ring II (9) are sleeved on the bottom of the base (6).
2. The high-precision electromagnetic pilot head moving iron core according to claim 1, wherein: A pagoda spring (11) is sleeved on the surface of the moving iron core (10). The two ends of the pagoda spring (11) are fixedly connected to the copper sleeve (5) and the moving iron core (10) respectively.
3. A high-precision electromagnetic pilot head moving iron core according to claim 1, characterized in that: An air inlet hole (15) is provided at the center of the bottom of the base (6). The air inlet hole (15) is used in cooperation with the O-ring I (8) and the large plug (2). An exhaust hole (7) is provided at the bottom of the base (6). The exhaust hole (7) is used in cooperation with the O-ring II (9). The exhaust hole (7) is communicated with the inner cavity of the base (6).
4. A high-precision electromagnetic pilot head moving iron core according to claim 1, characterized in that: Two self-tapping screws (14) penetrate through the top of the pressing plate (4). The bottom ends of the self-tapping screws (14) penetrate into the inner cavity of the base (6).
5. The high-precision electromagnetic pilot head moving iron core according to claim 1, characterized in that: An O-ring IV (16) is sleeved on the surface of the static iron core (1). The surface of the O-ring IV (16) is in contact with the copper sleeve (5).