High-precision micro-flow regulating valve

Abstract

The utility model relates to flow regulating valve technical field discloses a kind of high-precision small flow regulating valve, including valve body, the gasket is equipped in the valve body, the gasket upper side is equipped with sealing ring, the valve body is connected with lower valve seat, the lower valve seat inboard is connected with first valve seat, the first valve seat upper side is equipped with butterfly spring, the butterfly spring upper side is equipped with valve seat pressure sleeve, the valve seat pressure sleeve upper side is equipped with stem assembly, the lower valve seat upper side is equipped with stem assembly.In the utility model, regulating valve compact structure, small, light weight, interchangeability is good, processing and manufacturing are convenient, and structure advanced and reasonable, adjusting performance is good, close tightly, erosion resistant, long service life, with equal percentage flow characteristic, accurate flow regulation and control can be realized, satisfy the actual working condition demand of user, and accurate control water, oil and other gas, liquid medium, with the advantages of easy installation and removal, few wearing parts, simple maintenance.

Description

Technical Field

[0001] This utility model relates to the field of flow regulating valve technology, and in particular to a high-precision micro-flow regulating valve. Background Technology

[0002] Traditional control valves typically employ a double-seat structure, primarily composed of a valve body, valve cover, lower valve port, valve core and stem assembly, upper valve seat, lower valve seat, packing assembly, and packing gland. The valve body has one fluid inlet, which flows through the valve core and seat to the other outlet. The valve core and stem move up and down within the valve to change the flow cross-sectional area, thereby controlling flow rate and pressure. However, the valve body of this type of valve is usually made of casting, resulting in an outdated structure and large size. Due to the relatively complex flow path, the accuracy of its flow characteristics is difficult to guarantee. When fluid passes through the valve, the flow characteristics can only be controlled using an equal percentage method. Furthermore, the flow curve is prone to deviating from the ideal state, causing distortion. Therefore, the regulating effect is unsatisfactory, leakage is high, and the service life is relatively short. Utility Model Content

[0003] The purpose of this invention is to address the shortcomings of existing technologies by proposing a high-precision micro-flow regulating valve.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: a high-precision micro-flow regulating valve, comprising a valve body, a gasket inside the valve body, a sealing ring on the upper side of the gasket, a lower valve seat connected inside the valve body, a first valve seat connected inside the lower valve seat, a butterfly spring on the upper side of the first valve seat, a valve seat pressure sleeve on the upper side of the butterfly spring, a core rod assembly on the upper side of the valve seat pressure sleeve, a core rod assembly on the upper side of the lower valve seat, an upper valve seat on the upper side of the lower valve seat, a gasket on the upper side of the upper valve seat, a valve cover assembly on the upper side of the upper valve seat, a first nut on one side of the valve cover assembly, a stud connected to the first nut, a packing assembly on the upper side of the valve cover assembly, a round nut on one side of the packing assembly, and a second nut on the upper side of the core rod assembly.

[0005] As a further description of the above technical solution: The valve cover assembly includes a valve cover and a guide sleeve, with the guide sleeve located inside the valve cover.

[0006] As a further description of the above technical solution: The core rod assembly includes a valve stem and a valve core, with one end of the valve stem connected to the valve core.

[0007] As a further description of the above technical solution: One end of the valve body is provided with an inlet, and the other end of the valve body is provided with an outlet with a channel in the shape of a groove.

[0008] As a further description of the above technical solution: The valve cover is threadedly connected to the valve body by a first nut and a stud, and the core rod assembly is disposed inside the valve body.

[0009] As a further description of the above technical solution: The filler assembly and guide sleeve are used to guide the core rod assembly.

[0010] As a further description of the above technical solution: The second nut is installed on the upper end of the core rod assembly, and the round nut is installed on the outer ring of the valve cover assembly.

[0011] This utility model has the following beneficial effects: In this utility model, the regulating valve has a compact structure, small size, light weight, good interchangeability, convenient processing and manufacturing, and an advanced and reasonable structure. It has good regulating performance, tight closure, erosion resistance, and long service life. It adopts the equal percentage flow characteristic, which can realize precise flow regulation and control to meet the actual working conditions of users. It can also accurately control water, oil and other gaseous and liquid media. It has the advantages of convenient installation and disassembly, few vulnerable parts, and simple maintenance. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the overall structure of a high-precision micro-flow regulating valve proposed in this utility model. Figure 2 This is a partial structural diagram of a high-precision micro-flow regulating valve proposed in this utility model. Figure 1 ; Figure 3 This is a partial structural diagram of a high-precision micro-flow regulating valve proposed in this utility model. Figure 2 ; Figure 4 This is a partial structural diagram of a high-precision micro-flow regulating valve proposed in this utility model. Figure 3 .

[0013] Legend: 1. Valve body; 2. Gasket; 3. Sealing ring; 4. Lower valve seat; 5. First valve seat; 6. Butterfly spring; 7. Valve seat sleeve; 8. Core rod assembly; 9. Upper valve seat; 10. Gasket; 11. Valve cover assembly; 12. First nut; 13. Stud; 14. Packing assembly; 15. Round nut; 16. Second nut; 101. Valve cover; 102. Guide sleeve; 801. Valve stem; 802. Valve core. Detailed Implementation

[0014] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0015] Reference Figures 1-4 This utility model provides an embodiment of a high-precision micro-flow regulating valve, comprising a valve body 1, a gasket 2 inside the valve body 1, a sealing ring 3 on the upper side of the gasket 2, a lower valve seat 4 connected inside the valve body 1, a first valve seat 5 connected inside the lower valve seat 4, a butterfly spring 6 on the upper side of the first valve seat 5, a valve seat pressure sleeve 7 on the upper side of the butterfly spring 6, a core rod assembly 8 on the upper side of the valve seat pressure sleeve 7, a core rod assembly 8 on the upper side of the lower valve seat 4, an upper valve seat 9 on the upper side of the lower valve seat 4, a gasket 10 on the upper side of the upper valve seat 9, a valve cover assembly 11 on the upper side of the upper valve seat 9, a first nut 12 on one side of the valve cover assembly 11, a stud 13 connected to the first nut 12, a packing assembly 14 on the upper side of the valve cover assembly 11, a round nut 15 on one side of the packing assembly 14, and a second nut 16 on the upper side of the core rod assembly 8.

[0016] The valve cover assembly 11 includes a valve cover 101 and a guide sleeve 102. The guide sleeve 102 is provided inside the valve cover 101. The core rod assembly 8 includes a valve stem 801 and a valve core 802. One end of the valve stem 801 is connected to the valve core 802. One end of the valve body 1 is provided with an inlet, and the other end of the valve body 1 is provided with an outlet and the channel is groove-shaped. The valve cover 101 is threadedly connected to the valve body 1 by a first nut 12 and a stud 13. The core rod assembly 8 is disposed inside the valve body 1. The packing assembly 14 and the guide sleeve 102 are used to guide the core rod assembly 8. The second nut 16 is installed on the upper end of the core rod assembly 8, and the round nut 15 is installed on the outer ring of the valve cover assembly 11.

[0017] Working Principle: The high-precision micro-flow regulating valve mainly relies on its precise internal structure and the synergistic effect between its components. The valve body 1, as the foundation of the entire valve body, contains gaskets 2 and sealing rings 3 to ensure the valve's sealing performance. The lower valve seat 4 is connected to the first valve seat 5, forming part of the fluid channel. The valve core 802 is pre-tightened by the butterfly spring 6 and the valve seat pressure sleeve 7, thereby enhancing the sealing effect. The core rod assembly 8 is the core component of the entire valve, consisting of the valve stem 801 and the valve core 802. One end of the valve stem 801 is connected to the valve core 802. By moving the valve stem 801 up and down, precise control can be achieved. The opening degree of the valve core 802 regulates the flow rate of the fluid. The core rod assembly 8 is located inside the valve body 1 and is guided by the packing assembly 14 and the guide sleeve 102 to ensure the stability and accuracy of the movement of the valve core 802. The valve cover assembly 11 includes a valve cover 101 and a guide sleeve 102. The valve cover 101 is threadedly connected to the valve body 1 by a first nut 12 and a stud 13 for easy disassembly and maintenance. The packing assembly 14 is used to fill the gap between the valve stem 801 and the valve cover 101 to prevent fluid leakage. The round nut 15 is installed on the outer ring of the valve cover assembly 11 to further fix the valve cover assembly 11.

[0018] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A high-precision micro-flow regulating valve, comprising a valve body (1), characterized in that: The valve body (1) is provided with a gasket (2) inside, and a sealing ring (3) is provided on the upper side of the gasket (2). A lower valve seat (4) is connected inside the valve body (1), and a first valve seat (5) is connected on the inner side of the lower valve seat (4). A butterfly spring (6) is provided on the upper side of the first valve seat (5), and a valve seat pressure sleeve (7) is provided on the upper side of the butterfly spring (6). A core rod assembly (8) is provided on the upper side of the valve seat pressure sleeve (7), and a core rod assembly (8) is provided on the upper side of the lower valve seat (4). The upper side is provided with an upper valve seat (9), the upper side of the upper valve seat (9) is provided with a gasket (10), the upper side of the upper valve seat (9) is provided with a valve cover assembly (11), the valve cover assembly (11) is provided with a first nut (12) on one side, the first nut (12) is connected with a stud (13), the upper side of the valve cover assembly (11) is provided with a packing assembly (14), the packing assembly (14) is provided with a round nut (15) on one side, and the upper side of the core rod assembly (8) is provided with a second nut (16).

2. The high-precision micro-flow regulating valve according to claim 1, characterized in that: The valve cover assembly (11) includes a valve cover (101) and a guide sleeve (102), with the guide sleeve (102) provided inside the valve cover (101).

3. The high-precision micro-flow regulating valve according to claim 2, characterized in that: The core rod assembly (8) includes a valve stem (801) and a valve core (802), with one end of the valve stem (801) connected to the valve core (802).

4. A high-precision micro-flow regulating valve according to claim 3, characterized in that: The valve body (1) has an inlet at one end and an outlet at the other end with a groove-shaped channel.

5. A high-precision micro-flow regulating valve according to claim 4, characterized in that: The valve cover (101) is threadedly connected to the valve body (1) by a first nut (12) and a stud (13), and the core rod assembly (8) is disposed inside the valve body (1).

6. A high-precision micro-flow regulating valve according to claim 5, characterized in that: The filler assembly (14) and guide sleeve (102) are used to guide the core rod assembly (8).

7. A high-precision micro-flow regulating valve according to claim 6, characterized in that: The second nut (16) is installed on the upper end of the core rod assembly (8), and the round nut (15) is installed on the outer ring of the valve cover assembly (11).

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