A rocker arm valve without a moving iron core

Abstract

The application discloses a rocker arm valve without a moving iron core, which comprises an iron core, a first installation groove is formed in the lower end surface of the iron core, an object groove is formed in the groove bottom of the first installation groove, a compression spring is arranged in the object groove, a coil is wound on the iron core, an outer frame is arranged outside the coil, a valve body is arranged at the lower end of the iron core, a second installation groove is formed in the upper end surface of the valve body, the second installation groove and the first installation groove form an installation cavity, a left interface, a middle interface and a right interface are formed in the groove bottom of the second installation groove, a rocker arm is arranged in the installation cavity through a pin body, the compression spring is pressed against the upper end of the rocker arm, the rocker arm is made of a magnetic metal material, a separation diaphragm is connected to the lower end surface of the rocker arm, the side surface of the separation diaphragm is connected to the side wall of the second installation groove, and the lower end surface of the separation diaphragm is pressed against the left interface or the right interface. The rocker arm valve does not need to adopt a moving iron core and two springs to perform a swinging movement, has a simple structure, fewer parts, can achieve the same effect by using fewer parts, has a relatively low cost and good reliability.

Description

Technical Field

[0001] The present invention relates to a rocker arm valve, in particular to a rocker arm valve without a movable iron core. Background Art

[0002] Rocker valves offer excellent performance and are widely used in many fields due to their unique structure and operating principle. However, due to their inherent construction, rocker valves require more components than diaphragm valves. Currently, common rocker valves utilize a moving iron core in conjunction with two springs, which swing when the electromagnet is energized and de-energized. These rocker valves, which incorporate a moving iron core, suffer from limited structural stability and poor reliability. Furthermore, these valves are complex and require many components, resulting in relatively high production costs. Therefore, a rocker valve without a moving iron core has been designed to address these issues.

[0003] It should be noted that the above technical background is merely provided to provide a clear and complete description of the technical solutions of the present invention and to facilitate understanding by those skilled in the art. Simply because these solutions are described in the technical background section of the present invention, it should not be assumed that the above technical solutions are well known to those skilled in the art. Summary of the Invention

[0004] In order to overcome the above-mentioned deficiencies in the prior art, an object of the present invention is to provide a rocker arm valve without a movable iron core.

[0005] To achieve the above and other related purposes, the present invention provides a technical solution: a rocker valve without a movable iron core, comprising:

[0006] The iron core has a first mounting groove formed on its lower end surface, and a storage groove formed on the bottom of the first mounting groove. The annular iron core is a static iron core and remains in a fixed state.

[0007] A compression spring, the compression spring being arranged in the storage slot;

[0008] a coil, the coil being wound on the iron core;

[0009] An outer frame, wherein the outer frame cover is arranged outside the coil;

[0010] a valve body, the valve body being located at the lower end of the iron core, the upper end surface of the valve body being provided with a second mounting groove, the second mounting groove and the first mounting groove forming a mounting cavity, the bottom of the second mounting groove being provided with a left interface, a middle interface, and a right interface;

[0011] A rocker arm, wherein the rocker arm is swingably arranged in the mounting cavity through a pin body, the compression spring is pressed against the upper end of the rocker arm, and the rocker arm is made of magnetic metal;

[0012] An isolation diaphragm, the upper end surface of which is connected to the lower end surface of the rocker arm, the side surface of which is connected to the side wall of the second mounting groove, and the lower end surface of which is pressed against the left interface or the right interface, is used to isolate the flow path portion from the electromagnet portion.

[0013] When the coil is not energized, the left side of the rocker arm is acted upon by the spring force of the compression spring, causing the left side of the rocker arm to swing downward around the pin body and drive the isolation diaphragm to press against the left interface setting; when the coil is energized, the left side of the rocker arm is acted upon by the suction force of the electromagnet, causing the left side of the rocker arm to swing upward around the pin body, and the right side of the rocker arm to swing downward around the pin body and drive the isolation diaphragm to press against the right interface setting.

[0014] In this solution, when the coil is not energized, the left part of the rocker arm is subjected to the spring force applied by the compression spring, and the rocker arm as a whole rotates counterclockwise around the pin body for a certain angle until the swinging left part presses the left interface with the isolation diaphragm, and the right interface is in an open state; when the coil is energized, the suction force of the electromagnet on the rocker arm is greater than the spring force of the compression spring on the rocker arm, and the left part of the rocker arm is sucked upward, and the rocker arm as a whole rotates clockwise around the pin body for a certain angle until the swinging right part presses the right interface with the isolation diaphragm, and the left interface is in an open state.

[0015] Furthermore, the lower end surface of the rocker arm is flat, while the upper end of the rocker arm is stepped, with the left portion higher than the right portion. The first mounting groove is provided with a stepped structure corresponding to the shape of the rocker arm. In this embodiment, the flat lower end surface of the rocker arm facilitates connection with the isolation diaphragm, while the corresponding stepped structures provided at the upper end of the rocker arm and the first mounting groove act as limiters, preventing the rocker arm from rotating and ensuring stable structural installation.

[0016] Furthermore, the inner ends of the left and right interfaces protrude from the bottom surface of the second mounting slot. In this embodiment, the left and right interfaces protrude from the bottom surface of the slot, so that the isolation diaphragm can better press against the corresponding interface, ensuring that the isolation diaphragm can switch between the two interfaces more stably.

[0017] Furthermore, a boss is provided on the inner end of each of the left and right interfaces. The boss is a truncated cone with a side inclination angle greater than 30°. In this solution, the truncated cone ensures sealing while also protecting the isolation diaphragm to a certain extent. Compared to a cylindrical boss without an inclination angle, the isolation diaphragm is subjected to less pressure from the boss edge during sealing.

[0018] Furthermore, the pin body is located on the symmetrical center line of the left interface and the right interface. In this solution, when the rocker arm swings left and right, the pressure angle of the isolation diaphragm relative to the left interface and the right interface is equal, ensuring the same effect.

[0019] Furthermore, the core is composed of a cylindrical upper structure and an annular lower structure with a closed upper end. The coil is wound around the upper structure of the core, and the lower end of the outer frame is connected to the lower structure of the core. In this solution, the cylindrical upper structure design improves the attractive force, while the lower structure design ensures structural stability.

[0020] Furthermore, the storage slot is cylindrical and vertically arranged, and the center line of the storage slot is arranged to coincide with the center line of the upper structure of the iron core. In this solution, the force applied by the compression spring to the rocker arm is vertically downward, ensuring the effect of the action.

[0021] Furthermore, the isolation diaphragm is made of a polymer elastic material. In this solution, when the rocker arm swings left and right, the isolation diaphragm provides a non-planar seal for the left and right interfaces, with a certain tilt angle. The elastic material has a deformation capacity that can "eat" the tilt angle to ensure the sealing effect.

[0022] Furthermore, the outer ends of the left interface, the middle interface and the right interface are provided with gaskets, which are embedded in the valve body. In this solution, the gaskets are provided to ensure sealing when the valve body is connected to other flow paths.

[0023] Due to the application of the above technical solution, the present invention has the following beneficial effects compared with the prior art:

[0024] The rocker arm valve without a moving iron core designed by the present invention does not need to use a moving iron core and two springs for swinging motion. It has a simple structure and fewer parts. It can use fewer parts than the traditional structure to achieve the same effect. The cost is relatively low, and the cost can even be greatly reduced during mass production. The rocker arm valve without a moving iron core has good structural stability and improved reliability. The rocker arm moves like a seesaw in the valve, so that the left interface and the right interface are alternately sealed. The opening and closing action of the solenoid valve hardly causes changes in the internal volume, and the pump action volume is small. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 Schematic diagram of the cross-sectional structure of the rocker arm valve of the present invention in the energized state;

[0026] Figure 2 It is an enlarged view of part A of the present invention;

[0027] Figure 3 It is a schematic cross-sectional structural diagram of the rocker arm valve of the present invention in a non-energized state;

[0028] Figure 4 This is an enlarged view of part B of the present invention

[0029] In the above drawings, 1. outer frame; 2. coil; 3. compression spring; 4. iron core; 5. rocker arm; 6. pin body; 7. valve body; 8. gasket; 9. isolation diaphragm; 10. installation cavity; 11. left interface; 12. middle interface; 13. right interface; 14. step structure; 15. boss. DETAILED DESCRIPTION

[0030] The following describes the implementation of the present invention through specific embodiments. People skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification.

[0031] It should be noted that in the description of the present invention, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, or the orientations or positional relationships in which the inventive product is usually placed when in use. These are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", "third" and the like are only used to distinguish descriptions, and cannot be understood as indicating or implying relative importance. Terms such as "horizontal", "vertical", and "overhanging" do not mean that the components are required to be absolutely horizontal or overhanging, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0032] In the description of the present invention, it should also be noted that, unless otherwise expressly specified or limited, the terms "disposed," "installed," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections, direct connections, indirect connections through an intermediate medium, and internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0033] In the description of this application, it should be understood that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "horizontal, vertical, vertical, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the scope of protection of this application; the directional words "inside and outside" refer to the inside and outside relative to the outline of each component itself.

[0034] The preferred embodiments of the present invention are described in detail below with reference to the accompanying drawings so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby making a clearer and more precise definition of the protection scope of the present invention.

[0035] Example 1:

[0036] See attached Figure 1 and attached Figure 2 As shown, this embodiment provides a rocker valve without a movable iron core, comprising:

[0037] The iron core 4 has a first mounting groove formed on its lower end surface, and a storage groove formed on the bottom of the first mounting groove. The annular iron core 4 is a static iron core 4 and remains fixed.

[0038] The compression spring 3 is arranged in the storage slot; the compression spring 3 releases the rocker arm 5 in the power-off state and has a pressure-resistant function.

[0039] Coil 2, coil 2 is wound on the iron core 4;

[0040] The outer frame 1 is covered on the outside of the coil 2; the outer frame 1 and the iron core 4 and other parts constitute an electromagnetic magnetic field circuit.

[0041] The valve body 7 is located at the lower end of the iron core 4. The upper end surface of the valve body 7 is provided with a second mounting groove. The second mounting groove and the first mounting groove form a mounting cavity 10. The bottom of the second mounting groove is provided with a left port 11, a middle port 12 and a right port 13.

[0042] The rocker arm 5 is swingably arranged in the installation cavity 10 through a pin body 6, and the compression spring 3 is pressed against the upper end of the rocker arm 5. The rocker arm 5 is made of magnetic metal; the pin body 6 is the fulcrum of the rocker arm 5, forming the center of the rocking of the rocker arm 5.

[0043] Isolation diaphragm 9 has its upper end connected to the lower end of rocker arm 5, its side surface connected to the sidewall of the second mounting groove, and its lower end pressed against left port 11 or right port 13. Isolation diaphragm 9 is bonded to the lower end of rocker arm 5, forming a diaphragm assembly that isolates the flow path from the electromagnet.

[0044] When the coil 2 is not energized, the left side of the rocker arm 5 is acted upon by the spring force of the compression spring 3, causing the left side of the rocker arm 5 to swing downward around the pin body 6 and drive the isolation diaphragm 9 to press against the left interface 11; when the coil 2 is energized, the left side of the rocker arm 5 is acted upon by the suction force of the electromagnet, causing the left side of the rocker arm 5 to swing upward around the pin body 6, and the right side of the rocker arm 5 to swing downward around the pin body 6 and drive the isolation diaphragm 9 to press against the right interface 13.

[0045] When the coil 2 is not energized, the left side of the rocker arm 5 is subjected to the spring force exerted on it by the compression spring 3, and the rocker arm 5 as a whole rotates counterclockwise around the pin body 6 for a certain angle until the swinging left side part presses the left interface 11 with the isolation diaphragm 9, and the right interface 13 is in the open state; when the coil 2 is energized, the suction force of the electromagnet on the rocker arm 5 is greater than the spring force of the compression spring 3 on the rocker arm 5, and the left side of the rocker arm 5 is sucked upward, and the rocker arm 5 as a whole rotates clockwise around the pin body 6 for a certain angle until the swinging right side part presses the right interface 13 with the isolation diaphragm 9, and the left interface 11 is in the open state.

[0046] The electromagnet consists of a coil 2 and an iron core 4, and operates by utilizing the magnetic effect of current. When electricity is applied to coil 2, the current flowing through it generates a magnetic field. The presence of the iron core 4 significantly enhances this magnetic field. Made of a readily magnetizable material (such as soft iron or silicon steel), the iron core 4 is magnetized by the magnetic field generated by coil 2, and its direction is aligned with that of the coil 2. The combined magnetic fields of the coil 2 and the iron core 4 significantly enhance the magnetism of the electromagnet.

[0047] When coil 2 is energized, rocker arm 5 and iron core 4 become magnetized, attracting them against the repulsive force of compression spring 3. This causes the valve seat on the left side of rocker arm 5 to open, while the valve seat on the right side closes. When power is turned off, the reaction force of compression spring 3 causes the left lowering valve seat of rocker arm 5 to close, while the right lifting valve seat opens.

[0048] Example 2:

[0049] See attached Figure 1 and attached Figure 3As shown, this embodiment is a further improvement on the first embodiment. Specifically, the improvements are as follows: the lower end surface of the rocker arm 5 is flat, the upper end of the rocker arm 5 is provided with a stepped structure 14, with the left portion higher than the right portion, and the first mounting groove is provided with a stepped structure 14 corresponding to the shape of the rocker arm 5. In this embodiment, the lower end surface of the rocker arm 5 is configured as a flat surface to facilitate connection with the isolation diaphragm 9. The corresponding stepped structures 14 provided at the upper end of the rocker arm 5 and the first mounting groove act as limiters, preventing the rocker arm 5 from rotating and ensuring a stable structural installation.

[0050] Example 3:

[0051] See attached Figure 2 and attached Figure 4 As shown, this embodiment is a further improvement on the basis of the second embodiment, and its specific improvement is as follows: the inner ends of the left interface 11 and the right interface 13 are both protruding from the bottom surface of the second mounting groove. In this embodiment, the left interface 11 and the right interface 13 are both protruding from the bottom surface of the groove, so that the isolation diaphragm 9 can better press against the corresponding interface, ensuring that the isolation diaphragm 9 can switch more stably between the two interfaces. A boss 15 is provided at the inner end of the left interface 11 and the right interface 13. The boss 15 is a frustum with a side inclination angle greater than 30°. In this embodiment, the setting of the frustum not only ensures the sealing performance, but also protects the isolation diaphragm 9 to a certain extent. Compared with the cylindrical boss 15 without an inclination angle, the pressure on the edge of the boss 15 applied to the isolation diaphragm 9 during sealing is smaller.

[0052] Example 4: This example further improves on Example 3. Specifically, the pin 6 is positioned on the symmetrical centerline of the left and right ports 11, 13. In this embodiment, when the rocker arm 5 swings left and right, the pressure angles of the isolation diaphragm 9 relative to the left and right ports 11, 13 are equal, ensuring the same operational effect.

[0053] Embodiment 5:

[0054] See attached Figure 1 and attached Figure 3 As shown, this embodiment is a further improvement on the basis of the fourth embodiment, and its specific improvement is as follows: the iron core 4 is composed of a cylindrical upper structure and an annular lower structure with a closed upper end, the coil 2 is wound on the upper structure of the iron core 4, and the lower end of the outer frame 1 is connected to the lower structure of the iron core 4. In this embodiment, the design of the cylindrical upper structure improves the attraction, and the design of the lower structure ensures the stability of the structure. The storage groove is cylindrical and vertically arranged, and the center line of the storage groove is arranged to coincide with the center line of the upper structure of the iron core 4. In this embodiment, the force applied by the compression spring 3 to the rocker arm 5 is vertically downward to ensure the effect of the action.

[0055] Example 6:

[0056] This embodiment further improves upon the fifth embodiment. Specifically, the isolation diaphragm 9 is constructed of a polymer elastic material. In this embodiment, when the rocker arm 5 swings left and right, the isolation diaphragm 9 provides a non-planar seal with the left and right interfaces 11 and 13, with a certain tilt angle. The elastic material's ability to deform allows it to offset this tilt angle, ensuring a secure seal.

[0057] Embodiment seven:

[0058] See attached Figure 2 and attached Figure 4 As shown, this embodiment is a further improvement on the sixth embodiment. Specifically, the improvements are as follows: gaskets 8 are provided at the outer ends of the left port 11, the middle port 12, and the right port 13. Gaskets 8 are embedded in the valve body 7. In this embodiment, gaskets 8 ensure a seal when the valve body 7 is connected to other flow paths. In other embodiments, the number of valve seats is only two, that is, the rocker arm valve is a two-way valve without the middle port 12. The number of valve seats includes, but is not limited to, two or three.

[0059] The rocker arm valve without a moving iron core designed by the present invention does not need to use a moving iron core and two springs for swinging motion. It has a simple structure and fewer parts. It can use fewer parts than the traditional structure to achieve the same effect. The cost is relatively low, and the cost can even be greatly reduced during mass production. The rocker arm valve without a moving iron core has good structural stability and improved reliability. The rocker arm moves like a seesaw in the valve, so that the left interface and the right interface are alternately sealed. The opening and closing action of the solenoid valve hardly causes changes in the internal volume, and the pump action volume is small.

[0060] The above embodiments are only for illustrating the technical concept and features of the present invention. Its purpose is to enable people familiar with this technology to understand the content of the present invention and implement it. It cannot be used to limit the scope of protection of the present invention. Any equivalent changes or modifications made according to the spirit of the present invention should be included in the scope of protection of the present invention.

Claims

1. A rocker valve without a moving iron core, characterized in that: include: An iron core (4), wherein a first mounting groove is provided on a lower end surface of the iron core (4), and a storage groove is provided at a bottom of the first mounting groove; A compression spring (3), the compression spring (3) being arranged in the storage slot; A coil (2), the coil (2) being wound on the iron core (4); An outer frame (1), the outer frame (1) being arranged to cover the outside of the coil (2); A valve body (7), the valve body (7) being located at the lower end of the iron core (4), the upper end surface of the valve body (7) being provided with a second mounting groove, the second mounting groove and the first mounting groove forming a mounting cavity (10), the bottom of the second mounting groove being provided with a left interface (11), a middle interface (12) and a right interface (13); A rocker arm (5), the rocker arm (5) is swingably arranged in the mounting cavity (10) via a pin body (6), the compression spring (3) is pressed against the upper end of the rocker arm (5), and the rocker arm (5) is made of a magnetic metal material; An isolation diaphragm (9), wherein the upper end surface of the isolation diaphragm (9) is connected to the lower end surface of the rocker arm (5), the side surface of the isolation diaphragm (9) is connected to the side wall of the second mounting groove, and the lower end surface of the isolation diaphragm (9) is pressed against the left interface (11) or the right interface (13).

2. The rocker arm valve without a movable iron core according to claim 1, characterized in that: When the coil (2) is not energized, the left side of the rocker arm (5) is acted upon by the spring force of the compression spring (3), causing the left side of the rocker arm (5) to swing downward around the pin body (6) and drive the isolation diaphragm (9) to press against the left interface (11); When the coil (2) is energized, the left side of the rocker arm (5) is acted upon by the attraction force of the electromagnet, causing the left side of the rocker arm (5) to swing upward around the pin body (6), and the right side of the rocker arm (5) to swing downward around the pin body (6) and drive the isolation diaphragm (9) to press against the right interface (13).

3. The rocker arm valve without a movable iron core according to claim 1, characterized in that: The lower end surface of the rocker arm (5) is a plane, the upper end of the rocker arm (5) is a step structure (14) and the left side portion thereof is higher than the right side portion thereof, and the first mounting groove is provided with a step structure (14) corresponding to the shape of the rocker arm (5).

4. The rocker arm valve without a movable iron core according to claim 1, characterized in that: The inner ends of the left interface (11) and the right interface (13) are both protruding from the bottom surface of the second mounting groove.

5. The rocker arm valve without a movable iron core according to claim 1, characterized in that: A boss (15) is provided at the inner end of each of the left interface (11) and the right interface (13), and the boss (15) is a truncated cone with a side inclination angle greater than 30°.

6. The rocker arm valve without a movable iron core according to claim 1, characterized in that: The pin body (6) is located on the symmetrical center line of the left interface (11) and the right interface (13).

7. The rocker arm valve without a movable iron core according to claim 1, characterized in that: The iron core (4) consists of a cylindrical upper structure and an annular lower structure with a closed upper end; the coil (2) is wound around the upper structure of the iron core (4); and the lower end of the outer frame (1) is connected to the lower structure of the iron core (4).

8. The rocker arm valve without a movable iron core according to claim 6, characterized in that: The storage groove is cylindrical and vertically arranged, and the center line of the storage groove is arranged to coincide with the center line of the upper structure of the iron core (4).

9. The rocker arm valve without a movable iron core according to claim 1, characterized in that: The isolation diaphragm (9) is made of a polymer elastic material.

10. The rocker arm valve without a movable iron core according to claim 1, characterized in that: Gaskets (8) are provided at the outer ends of the left interface (11), the middle interface (12), and the right interface (13), and the gaskets (8) are embedded in the valve body (7).

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