Rocker arm valve without movable iron core

Abstract

The rocker arm valve without the movable iron core comprises the iron core, the lower end face of the iron core is provided with a first installation groove, and the groove bottom of the first installation groove is provided with a containing groove; the compression spring is arranged in the storage groove; the coil is wound on the iron core; the outer frame covers the coil; the valve body is located at the lower end of the iron core, a second mounting groove is formed in the upper end face of the valve body, the second mounting groove and the first mounting groove form a mounting cavity, and a left connector, a middle connector and a right connector are formed in the groove bottom of the second mounting groove; the rocker arm is arranged in the mounting cavity in a swinging mode through a pin body, the compression spring abuts against the upper end of the rocker arm, and the rocker arm is made of magnetic metal; the upper end face of the isolation diaphragm is connected to the lower end face of the rocker arm, the side face of the isolation diaphragm is connected with the side wall of the second installation groove, and the lower end face of the isolation diaphragm abuts against the left connector or the right connector. A movable iron core and two kinds of springs do not need to be adopted for swinging motion, the structure is simple, the number of parts is small, the same effect can be achieved through fewer parts, cost is relatively low, and reliability is good.

Description

Technical Field

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

[0002] The rocker valve has excellent performance and is widely used in many fields due to its unique structure and working principle. However, due to its own structure, the rocker valve has more parts than the diaphragm valve. The common rocker valve currently uses a moving iron core in combination with two springs. The moving iron core and two springs are used to swing when the electromagnet is energized or not. The rocker valve containing the moving iron core has general structural stability and poor reliability. In addition, this type of structure contains many parts and is complex in structure, so the production cost is relatively high. Therefore, a rocker valve without a moving iron core is designed to solve the above problems.

[0003] It should be noted that the above introduction to the technical background is only for the convenience of providing a clear and complete description of the technical solutions of the present invention and for the convenience of understanding by those skilled in the art. It cannot be considered that the above technical solutions are well known to those skilled in the art simply because these solutions are described in the background technology section of the present invention. 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] In order to achieve the above objectives and other related objectives, the technical solution provided by the present invention is: a rocker arm valve without a moving iron core, comprising: The iron core has a first mounting groove on its lower end surface and a storage groove at its bottom. The annular iron core is a static iron core and remains fixed.

[0006] A compression spring, wherein the compression spring is arranged in the storage slot; A coil, wherein the coil is wound on the iron core; An outer frame, wherein the outer frame cover is arranged outside the coil; A valve body, the valve body is located at the lower end of the iron core, the upper end surface of the valve body is provided with a second mounting groove, the second mounting groove and the first mounting groove form a mounting cavity, and the bottom of the second mounting groove is provided with a left interface, a middle interface and a right interface; A rocker arm, wherein the rocker arm is swingably arranged in the installation 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; 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 part and the electromagnet part.

[0007] When the coil is not energized, the left side of the rocker arm is acted upon by the spring force of the compression spring, so that the left side of the rocker arm swings downward around the pin body and drives 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, so that the left side of the rocker arm swings upward around the pin body, and the right side of the rocker arm swings downward around the pin body and drives the isolation diaphragm to press against the right interface setting.

[0008] In this solution, when the coil is not energized, the left side 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 side 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 side 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 side part presses the right interface with the isolation diaphragm, and the left interface is in an open state.

[0009] Furthermore, the lower end surface of the rocker arm is a plane, the upper end of the rocker arm is a step structure and its left part is higher than its right part, and the first mounting groove is provided with a step structure corresponding to the shape of the rocker arm. In this solution, the lower end surface of the rocker arm is provided as a plane to facilitate connection with the isolation diaphragm, and the upper end of the rocker arm and the first mounting groove are provided with corresponding step structures to play a limiting role, prevent the rocker arm from rotating, and ensure stable installation of the structure.

[0010] Furthermore, the inner ends of the left interface and the right interface are both protruding from the bottom surface of the second mounting groove. In this solution, the left interface and the right interface are both protruding from the bottom surface of the groove, 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.

[0011] Furthermore, a boss is provided at the inner end of the left interface and the right interface, and the boss is a truncated cone with a side inclination angle greater than 30 degrees. In this solution, the setting of the truncated cone not only ensures the sealing performance, but also protects the isolation diaphragm to a certain extent. Compared with a cylindrical boss without an inclination angle, the pressure on the isolation diaphragm from the edge of the boss during sealing is smaller.

[0012] 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 angles of the isolation diaphragm relative to the left interface and the right interface are equal, ensuring the same effect.

[0013] Furthermore, the iron 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 iron core, and the lower end of the outer frame is connected to the lower structure of the iron core. In this solution, the design of the cylindrical upper structure improves the attraction, and the design of the lower structure ensures the stability of the structure.

[0014] Furthermore, 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. In this solution, the force applied by the compression spring to the rocker arm is vertically downward to ensure the effect.

[0015] Furthermore, the isolation diaphragm is a polymer elastic material. In this solution, when the rocker arm swings left and right, the isolation diaphragm is a non-planar seal for the left and right interfaces, with a certain tilt angle, and the elastic material has a deformation amount, which can "eat up" the tilt angle to ensure the sealing effect.

[0016] Further, the outer ends of the left interface, the middle interface and the right interface are provided with gaskets, and the gaskets are embedded in the valve body. In this solution, the gaskets are used to ensure sealing when the valve body is connected to other flow paths.

[0017] Due to the application of the above technical solution, the present invention has the following beneficial effects compared with the prior art: The rocker arm valve without a moving iron core designed in the present invention does not need to use a moving iron core and two springs for swinging motion, has a simple structure and fewer parts, can use fewer parts than traditional structures to achieve the same effect, has a relatively low cost, and can even significantly reduce the cost 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

[0018] Figure 1 It is a schematic cross-sectional structure diagram of the rocker arm valve of the present invention in a power-on state; Figure 2 It is an enlarged view of part A of the present invention; Figure 3 It is a schematic diagram of the cross-sectional structure of the rocker arm valve of the present invention in a non-powered state; Figure 4 This is an enlarged view of part B of the present invention 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

[0019] The following is a description of the implementation of the present invention by means of specific embodiments. Those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification.

[0020] 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 positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, or the positions or positional relationships in which the invented product is usually placed when in use, which 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 a limitation on the present invention. In addition, the terms "first", "second", "third" and the like are only used to distinguish the description, 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.

[0021] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection, it can be a mechanical connection, it can be an electrical connection, it can be a direct connection, it can be indirectly connected through an intermediate medium, and it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0022] In the description of the present application, it should be understood that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings, and are only for the convenience of describing the present 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, and therefore cannot be understood as limiting the scope of protection of the present application; the directional words "inside and outside" refer to the inside and outside relative to the contours of each component itself.

[0023] The preferred embodiments of the present invention are described in detail below in conjunction with 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 definite definition of the protection scope of the present invention.

[0024] Embodiment 1: See attached Figure 1 and attached Figure 2 As shown, this embodiment provides a rocker arm valve without a moving iron core, comprising: The iron core 4 has a first mounting groove formed on its lower end surface and a storage groove formed on its bottom. The annular iron core 4 is a static iron core 4 and is kept in a fixed state.

[0025] The compression spring 3 is arranged in the storage slot; the compression spring 3 releases the rocker arm 5 in a power-off state and has a pressure-resistant function.

[0026] Coil 2, coil 2 is wound on the iron core 4; 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 form an electromagnet magnetic field loop.

[0027] 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 interface 11, a middle interface 12 and a right interface 13; 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.

[0028] The isolation diaphragm 9 has its upper end surface connected to the lower end surface of the rocker arm 5, its side surface connected to the side wall of the second mounting groove, and its lower end surface pressed against the left interface 11 or the right interface 13. The isolation diaphragm 9 is bonded to the lower end of the rocker arm 5 to form a diaphragm assembly for isolating the flow path part and the electromagnet part.

[0029] 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, so that the left side of the rocker arm 5 swings downward around the pin body 6 and drives 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, so that the left side of the rocker arm 5 swings upward around the pin body 6, and the right side of the rocker arm 5 swings downward around the pin body 6 and drives the isolation diaphragm 9 to press against the right interface 13.

[0030] 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 an 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 an open state.

[0031] The electromagnet is composed of a coil 2 and an iron core 4, and works by utilizing the magnetic effect of electric current. When the coil 2 is energized, the current passing through the coil 2 will generate a magnetic field, and the presence of the iron core 4 can significantly enhance the magnetic field. The iron core 4 is made of easily magnetized materials (such as soft iron or silicon steel), and the iron core 4 is magnetized by the magnetic field generated by the coil 2, and has the same direction as the magnetic field of the coil 2. The magnetic fields of the coil 2 and the iron core 4 are superimposed on each other, which greatly enhances the magnetism of the electromagnet.

[0032] When the coil 2 is energized, the rocker arm 5 and the iron core 4 are magnetized and thus attracted against the repulsive force of the compression spring 3. At this time, the valve seat portion on the left side of the rocker arm 5 is opened, and the valve seat portion on the right side is closed. After the power is cut off, the left lowering valve seat portion of the rocker arm 5 is closed due to the reaction force of the compression spring 3, and the right lifting valve seat portion is opened.

[0033] Embodiment 2: See attached Figure 1 and attached Figure 3 As shown, this embodiment is a further improvement on the basis of the first embodiment, and its specific improvement is as follows: 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 its left part is higher than its right part, and the first mounting groove is provided with a step structure 14 corresponding to the shape of the rocker arm 5. In this embodiment, the lower end surface of the rocker arm 5 is set as a plane to facilitate connection with the isolation diaphragm 9, and the upper end of the rocker arm 5 and the first mounting groove are provided with a corresponding step structure 14 to play a limiting role, prevent the rocker arm 5 from rotating, and ensure the stable installation of the structure.

[0034] Embodiment three: See attached Figure 2 and attached Figure 4As 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 between the two interfaces more stably. A boss 15 is provided at the inner end 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°. In this embodiment, the setting of the truncated cone 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.

[0035] Embodiment 4: This embodiment is a further improvement on the basis of embodiment 3, and its specific improvement is as follows: the pin body 6 is located on the symmetrical center line of the left interface 11 and the right interface 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 interface 11 and the right interface 13 are equal, ensuring the same effect.

[0036] Embodiment five: See attached Figure 1 and attached Figure 3 As shown, this embodiment is a further improvement on the basis of the fourth embodiment, and the 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 coincides 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.

[0037] Embodiment six: This embodiment is a further improvement on the basis of the fifth embodiment, and its specific improvement is as follows: the isolation diaphragm 9 is a polymer elastic material. In this embodiment, when the rocker arm 5 swings left and right, the isolation diaphragm 9 is a non-planar seal for the left interface 11 and the right interface 13, and has a certain tilt angle, and the elastic material has a deformation amount, which can "eat up" the tilt angle to ensure the sealing effect.

[0038] Embodiment seven: See attached Figure 2 and attached Figure 4As shown, this embodiment is a further improvement on the basis of the sixth embodiment, and its specific improvement is: the outer ends of the left interface 11, the middle interface 12 and the right interface 13 are provided with gaskets 8, and the gaskets 8 are embedded in the valve body 7. In this embodiment, the gasket 8 is used to ensure the sealing effect when the valve body 7 is connected to other flow paths. In some other embodiments, the number of valve seats is only two, that is, the rocker arm valve is a two-way valve without the middle interface 12. The number of valve seats includes but is not limited to two or three.

[0039] The rocker arm valve without a moving iron core designed in the present invention does not need to use a moving iron core and two springs for swinging motion, has a simple structure and fewer parts, can use fewer parts than traditional structures to achieve the same effect, has a relatively low cost, and can even significantly reduce the cost 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.

[0040] The above implementation modes are only for illustrating the technical concept and features of the present invention, and their purpose is to enable people familiar with this technology to understand the content of the present invention and implement it, and they cannot be used to limit the protection scope of the present invention. Any equivalent changes or modifications made according to the spirit of the present invention should be included in the protection scope of the present invention.

Claims

1. A rocker arm 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 the bottom of the first mounting groove; A compression spring (3), the compression spring (3) being arranged in the storage groove; 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) being swingably arranged in the mounting cavity (10) via a pin body (6), the compression spring (3) being pressed against the upper end of the rocker arm (5), and the rocker arm (5) being 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 moving iron core according to claim 1, characterized in that: When the coil (2) is not energized, the left side portion of the rocker arm (5) is acted upon by the spring force of the compression spring (3), so that the left side portion of the rocker arm (5) swings downward around the pin body (6) and drives the isolation diaphragm (9) to press against the left interface (11); When the coil (2) is energized, the left side portion of the rocker arm (5) is acted upon by the attraction force of the electromagnet, causing the left side portion of the rocker arm (5) to swing upward around the pin body (6), and the right side portion 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 moving 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 moving 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); 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) is composed 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 arranged vertically, 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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