Movable core type proportional valve

Abstract

The utility model discloses a movable core type proportional valve which comprises an adjusting screw, a fixing nut, a support, a pressure adjusting spring, a movable iron core and a sealing plate. The adjusting guide cover is arranged between the fixing nut and the bracket and is connected with the bracket through a screw; an upper auxiliary magnetic pole is arranged on the bracket, and the upper auxiliary magnetic pole and the bracket are integrally formed; a lower auxiliary magnetic pole is arranged on the sealing plate, and the lower auxiliary magnetic pole and the sealing plate are integrally formed. The device is convenient to assemble, compact in overall structure and low in production cost.

Description

Technical Field

[0001] The utility model relates to the technical field of proportional valves, in particular to a moving core type proportional valve. Background Art

[0002] In the prior art, the adjusting screw of the proportional valve is directly connected to the bracket thread, which results in a larger overall size of the bracket; in addition, the bracket and the auxiliary magnetic pole are designed as separate parts, which increases the assembly time and requires further positioning of the auxiliary magnetic pole. Summary of the Invention

[0003] According to an embodiment of the present invention, a moving core proportional valve is provided, comprising an adjusting screw, a fixing nut, a bracket, a pressure regulating spring, a moving iron core and a sealing plate; and further comprising:

[0004] An adjusting guide cover is arranged between the fixing nut and the bracket and is connected to the bracket by screws;

[0005] An upper auxiliary magnetic pole is provided on the bracket, and the upper auxiliary magnetic pole and the bracket are integrally formed;

[0006] A lower auxiliary magnetic pole is provided on the sealing plate, and the lower auxiliary magnetic pole and the sealing plate are integrally formed.

[0007] Furthermore, it also includes: a spring seat, which is arranged between the adjusting screw and the pressure-adjusting spring and is connected to the pressure-adjusting spring.

[0008] Furthermore, the lower end of the spring seat is a conical structure.

[0009] Furthermore, an annular limiting protrusion is provided on the upper end of the spring seat.

[0010] Furthermore, a sealing ring is provided between the adjustment guide cover and the bracket.

[0011] Furthermore, a limiting groove is provided on the moving iron core, and the pressure regulating spring is provided in the limiting groove.

[0012] The moving core type proportional valve according to the embodiment of the utility model is easy to assemble, has a compact overall structure and low production cost.

[0013] It is to be understood that both the foregoing general description and the following detailed description are exemplary, and are intended to provide further explanation of the technology as claimed. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a structural diagram of a moving core proportional valve installed on a three-way valve according to an embodiment of the utility model.

[0015] Figure 2 for Figure 1 A top view of

[0016] Figure 3 for Figure 2 AA sectional view;

[0017] Figure 4 for Figure 3 Enlarged view of point A. DETAILED DESCRIPTION

[0018] The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings to further illustrate the present invention.

[0019] First, combine Figures 1 to 4 The moving core proportional valve according to the embodiment of the present invention is described, which is used in the field of solenoid valve technology and has a wide range of application scenarios.

[0020] like Figures 1 to 4 As shown, the movable core proportional valve of the embodiment of the present invention includes an adjusting screw 1, a fixing nut 2, a bracket 3, a pressure regulating spring 4, a movable iron core 5 and a sealing plate 6; and further includes:

[0021] The adjusting guide cover 7 is arranged between the fixing nut 2 and the bracket 3 and is connected to the bracket 3 by screws;

[0022] An upper auxiliary magnetic pole 31 is provided on the bracket 3. The upper auxiliary magnetic pole 31 is integrally formed with the bracket 3, making the structure compact, reducing costs, and reducing assembly and positioning time. The upper auxiliary magnetic pole 31 collects and gathers the magnetic field to better meet the electromagnetic force requirements of the proportional coil.

[0023] A lower auxiliary magnetic pole 61 is provided on the sealing plate 6. The lower auxiliary magnetic pole 61 is integrally formed with the sealing plate 6, which makes the structure compact, reduces costs, and reduces assembly and positioning time; the lower auxiliary magnetic pole 61 plays the role of collecting and gathering the magnetic field to better meet the electromagnetic force requirements of the proportional coil.

[0024] Further, if Figure 4 As shown, in this embodiment, it also includes: a spring seat 8, which is arranged between the adjusting screw 1 and the pressure-adjusting spring 4 and is connected to the pressure-adjusting spring 4.

[0025] Further, if Figure 4 As shown, in this embodiment, the lower end of the spring seat 8 is a conical structure, which is inserted into the pressure-adjusting spring 4 and has a guiding effect on the spring.

[0026] Further, if Figure 4 As shown, in this embodiment, an annular limiting protrusion 81 is provided on the upper end of the spring seat 8 for limiting the position of the spring.

[0027] Further, if Figure 4 As shown, in this embodiment, a sealing ring is provided between the adjustment guide cover 7 and the bracket 3 to prevent leakage.

[0028] Further, if Figure 4 As shown, in this embodiment, a limiting groove 51 is provided on the moving iron core 5 , and the pressure regulating spring 4 is arranged in the limiting groove 51 .

[0029] Working principle: After assembling the moving iron core 5, spring seat 8, and pressure-adjusting spring 4, the adjusting guide cover 7 is assembled to make assembly more convenient and also facilitate maintenance; the compression amount of the pressure-adjusting spring 4 is adjusted by adjusting the depth of the screw 1, thereby adjusting the minimum load pressure of the valve.

[0030] Above, refer to Figures 1 to 4 The invention discloses a dynamic core proportional valve, which is easy to assemble, has a compact overall structure and low production cost.

[0031] It should be noted that, in this specification, the terms "comprises," "includes," or any other variations thereof are intended to encompass non-exclusive inclusion, such that a process, method, article, or apparatus comprising a series of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus. In the absence of further limitations, the elements defined by the phrase "comprising..." do not exclude the presence of other identical elements in the process, method, article, or apparatus comprising the elements.

[0032] Although the present invention has been described in detail through the above preferred embodiments, it should be understood that the above description should not be considered as limiting the present invention. After reading the above description, various modifications and alternatives to the present invention will be readily apparent to those skilled in the art. Therefore, the scope of protection of the present invention shall be defined by the appended claims.

Claims

1. A moving core proportional valve, comprising an adjusting screw, a fixing nut, a bracket, a pressure regulating spring, a moving iron core and a sealing plate; characterized in that: Also includes: an adjusting guide cover, the adjusting guide cover being disposed between the fixing nut and the bracket and connected to the bracket via screws; An upper auxiliary magnetic pole is provided on the bracket, and the upper auxiliary magnetic pole is integrally formed with the bracket; The sealing plate is provided with a lower auxiliary magnetic pole, and the lower auxiliary magnetic pole is integrally formed with the sealing plate.

2. The moving core proportional valve according to claim 1, wherein: It also includes a spring seat, which is arranged between the adjusting screw and the pressure-adjusting spring and is connected to the pressure-adjusting spring.

3. The moving core proportional valve according to claim 2, characterized in that: The lower end of the spring seat is a conical structure.

4. The moving core proportional valve according to claim 2, wherein: An annular limiting protrusion is provided on the upper end of the spring seat.

5. The moving core proportional valve according to claim 1, wherein: A sealing ring is provided between the adjusting guide cover and the bracket.

6. The moving core proportional valve according to claim 1, wherein: A limiting groove is provided on the moving iron core, and the pressure regulating spring is arranged in the limiting groove.

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