A multi-stage regulating mixing control valve

Abstract

This invention relates to a multi-stage regulating mixing valve, comprising: a valve body having interconnected inlet, outlet, and mixing channels, the inlet and outlet channels forming a main flow channel; a mixing valve core disposed within the valve body, controlling the flow rate of the mixing channels by adjusting the opening degree, thereby regulating the mixing ratio of different fluid media; a coarse adjustment valve core, adjustable vertically within the valve body, used to control the opening degree of the main flow channel; and a fine adjustment structure including a drive device, a first adjustment member having a first adjustment orifice, and a second adjustment member having a second adjustment orifice, the first adjustment member being fixed to the bottom of the coarse adjustment valve core, the first and second adjustment members being in contact with each other, the drive device being installed within the coarse adjustment valve core, used to drive the second adjustment member to rotate, thereby adjusting the overlap of the first and second adjustment orifices to achieve fine flow adjustment. This invention provides a highly efficient and stable flow regulation solution.

Description

Technical Field

[0001] This invention relates to the field of valve technology, and more specifically to a multi-stage regulating mixing valve. Background Technology

[0002] In traditional fluid control systems, regulating valves are widely used to control the flow and pressure of a single fluid. However, many industrial applications require the regulation and mixing of multiple different fluid media to meet specific process requirements. In existing technologies, multiple independent valves are typically required to work together to achieve the mixing of different fluids. This multi-valve approach not only increases system complexity but also leads to a larger equipment footprint, higher maintenance costs, and more complex system operation.

[0003] Furthermore, traditional control valve designs typically only consider the flow regulation of a single fluid, failing to effectively address the problem of precise flow regulation in the main flow channel. Existing control valves lack multi-stage regulation mechanisms, making it difficult to accurately regulate flow over a wide range, especially in applications with significant variations in operating conditions, where their regulation accuracy and response speed cannot meet the stringent process requirements. Summary of the Invention

[0004] In view of this, embodiments of the present invention provide a multi-stage regulating mixing valve that can effectively regulate and mix multiple fluid media, while achieving multi-stage fine regulation of the main flow channel. This solves the complexity of the prior art, which requires multiple valves to cooperate to achieve fluid mixing, and provides a simplified and high-performance solution.

[0005] This application provides a multi-stage regulating mixing valve, including:

[0006] The valve body has an interconnected inlet channel, an outlet channel, and a mixing channel, wherein the inlet channel and the outlet channel constitute the main channel.

[0007] A coarse adjustment valve core is adjustable up and down within the valve body to control the opening degree of the main flow channel;

[0008] The mixing valve core is fitted outside the coarse adjustment valve core. By adjusting the opening degree, the flow rate of the mixing channel can be controlled, and the mixing ratio of different fluid media can be adjusted.

[0009] The fine-tuning structure includes a driving device, a first adjusting member with a first adjusting hole and a second adjusting member with a second adjusting hole. The first adjusting member is fixed to the bottom of the coarse-tuning valve core. The first adjusting member and the second adjusting member are in contact with each other. The driving device is installed inside the coarse-tuning valve core and is used to drive the second adjusting member to rotate, thereby adjusting the overlap of the first adjusting hole and the second adjusting hole to achieve fine-tuning of the flow rate.

[0010] Optionally, it also includes a valve cover mounted on the valve body, through which the mixing valve core passes.

[0011] Optionally, a sealing ring is installed between the mixing valve core and the valve body, and the sealing ring is fixed by the valve cover.

[0012] Optionally, the inlet channel is used to introduce a fluid medium; the outlet channel is used to discharge a fluid medium; and the mixing channel is used to introduce a fluid medium that needs to be mixed.

[0013] Optionally, a slit is provided at the lower end of the mixing valve core. When the mixing valve core rotates, the fluid flow area between the slit and the mixing channel changes, thereby realizing the functions of opening and closing and regulating the flow rate.

[0014] Optionally, the upper part of the coarse adjustment valve core has an external thread, and the inner wall of the mixing valve core has an internal thread, with the internal thread and the external thread meshing with each other.

[0015] Optionally, the driving device includes a micro motor that drives the second adjusting member to rotate.

[0016] Optionally, the drive device further includes a coupling and a rotating shaft, wherein the micro motor, coupling, rotating shaft, and second adjusting component are connected in sequence.

[0017] Optionally, the first adjusting member is a hemispherical shell with a first adjusting hole, which is divided into an inlet and an outlet; the second adjusting member is a hemispherical shell with a second adjusting hole, which is divided into a connected inlet and an outlet.

[0018] Optionally, the upper ends of both the coarse adjustment valve core and the mixing valve core are equipped with handles or designed as external hexagons.

[0019] The beneficial effects of this invention are as follows:

[0020] This invention simplifies the system structure and reduces the complexity of using multiple valves in conjunction with each other by integrating the regulation and mixing functions of multiple fluid media into a single regulating valve. It also lowers equipment footprint and maintenance costs. Employing a multi-stage regulation mode combining coarse and fine adjustment, the coarse adjustment valve core enables coarse regulation and rapid opening and closing of the main flow rate, while the fine adjustment structure allows for precise regulation of the flow rate within a small range. This balances rapid response under high flow rate conditions with high-precision control under low flow rate conditions. The mixing valve core, located within the valve body, further regulates the flow rate through its rotation, thereby improving the accuracy and stability of the mixing ratio control. The integrated design reduces the complexity of multi-valve coordination, lowering equipment costs and floor space. The fine adjustment structure and mixing valve core structure enhance the proportional control capability of the mixed fluids, expanding the regulation range and flexibility. This invention is particularly suitable for cryogenic conditions and applications requiring high flow control accuracy, and has significant application value and promising prospects in industries such as chemical, energy, natural gas liquefaction, and transportation. Attached Figure Description

[0021] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application.

[0022] Figure 1 This is a three-dimensional structural diagram of a multi-stage regulating mixing valve provided in an embodiment of the present invention.

[0023] Figure 2 This is a cross-sectional view of a multi-stage regulating mixing control valve provided in an embodiment of the present invention.

[0024] Figure 3 This is a schematic diagram of the adjustment of the mixing valve core and the mixing flow channel provided in the embodiments of the present invention.

[0025] Figure 4 A cross-sectional view of the coarse adjustment valve core provided in an embodiment of the present invention.

[0026] Figure 5 A perspective view of the mixing valve core provided in an embodiment of the present invention.

[0027] Figure 6 A perspective view of the coarse adjustment valve core and the mixing valve core assembly provided in the embodiments of the present invention.

[0028] Figure label:

[0029] 1. Valve body; 11. Inlet flow channel; 12. Outlet flow channel; 13. Mixing flow channel;

[0030] 2. Mixing valve core; 21. Circular protrusion; 22. Cutout; 23. Internal thread; 24. First handle;

[0031] 3. Coarse adjustment valve core; 31. External thread; 32. Second handle;

[0032] 4. Fine-tuning structure; 41. Drive device; 42. First adjustment hole; 43. First adjustment component; 44. Second adjustment hole; 45. Second adjustment component; 46. Inlet; 47. Outlet;

[0033] 5. Valve cover. Detailed Implementation

[0034] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numbers in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this application. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this application as detailed in the appended claims.

[0035] The terminology used in this application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. The singular forms “a,” “the,” and “the” used in this application and the appended claims are also intended to include the plural forms unless the context otherwise requires. It should also be understood that the term “and / or” as used herein refers to and includes any or all possible combinations of one or more of the associated listed items.

[0036] refer to Figures 1-6 This invention provides a multi-stage adjustable mixing control valve, comprising a valve body 1, a mixing valve core 2, a coarse adjustment valve core 3, and a fine adjustment structure 4. The valve body 1 has an interconnected inlet flow channel 11, an outlet flow channel 12, and a mixing flow channel 13, with the inlet flow channel 11 and outlet flow channel 12 forming the main flow channel. The mixing valve core 2 is rotatably mounted on the valve body 1, and its opening degree controls the flow rate of the mixing flow channel 13, thereby adjusting the mixing ratio of different fluid media. The coarse adjustment valve core 3 is adjustablely inserted vertically through the mixing valve core 2. In the middle, it is used to control the opening of the main channel; the fine adjustment structure 4 includes a drive device 41, a first adjustment member 43 with a first adjustment hole 42 and a second adjustment member 45 with a second adjustment hole 44. The first adjustment member 43 is fixed to the bottom of the coarse adjustment valve core 3. The first adjustment member 43 and the second adjustment member 45 are in contact with each other. The drive device 41 is installed in the coarse adjustment valve core 3 and is used to drive the second adjustment member 45 to rotate, thereby adjusting the overlap of the first adjustment hole 42 and the second adjustment hole 44 to achieve fine adjustment of the flow rate.

[0037] This invention simplifies the system structure and reduces the complexity of using multiple valves in conjunction with each other by integrating the regulation and mixing functions of multiple fluid media into a single regulating valve. It also lowers equipment footprint and maintenance costs. A multi-stage regulation mode combining coarse and fine adjustment is employed. The coarse adjustment valve core 3 achieves coarse regulation and rapid opening and closing of the main flow rate, while the fine adjustment structure 4 enables fine adjustment of the flow rate within a small range, balancing rapid response under high flow rate conditions with high-precision control under low flow rate conditions. The mixing valve core 2, located within the valve body 1, further regulates the flow rate through its rotation, thereby improving the control accuracy and stability of the mixing ratio. The integrated design reduces the complexity of multi-valve coordination, lowering equipment costs and floor space. The fine adjustment structure 4 and the mixing valve core 2 enhance the proportional control capability of the mixed fluid, expanding the regulation range and flexibility.

[0038] In one embodiment, a valve cover 5 is further included, which is mounted on the valve body 1, and the mixing valve core 2 passes through the valve cover 5. Furthermore, a sealing ring is installed between the mixing valve core 2 and the valve body 1, and the sealing ring is fixed by the valve cover 5 to effectively prevent fluid leakage under low temperature or high pressure conditions, ensuring the safety and reliability of the valve during long-term operation.

[0039] In one embodiment, the inlet channel 11 is used to introduce a fluid medium; the outlet channel 47 is used to discharge a fluid medium; and the mixing channel 13 is used to introduce a fluid medium that needs to be mixed. Its structure is simple and highly integrated. The inlet channel 11, outlet channel 12, and mixing channel 13 are integrated within the valve body 1, reducing external pipeline connections and lowering assembly costs and installation space requirements.

[0040] In one embodiment, the lower end of the mixing valve core 2 extends into the outlet of the mixing channel 13. A slit 22 is formed at the lower end of the mixing valve core 2. When the mixing valve core 2 rotates, the fluid flow area between the slit 22 and the mixing channel 13 changes, thereby achieving the functions of opening / closing and regulating the flow rate. The mixing valve core 2 is cylindrical in shape, with a circular protrusion 21 at the top for positioning and fixing; the middle part is a straight cylindrical channel, with a semi-circular slit 22 at the lower end, which is the main control part of the fluid channel. When the mixing valve core 2 rotates, the slit 22 at the lower end determines the fluid flow area, thereby achieving the functions of opening / closing and regulating the flow rate. This design, which adjusts the flow rate of the mixing channel 13 by rotation, achieves continuous adjustable and proportional control of the flow rate while ensuring structural simplicity and reliability, significantly improving the valve's adjustment accuracy and operational flexibility.

[0041] In one embodiment, the coarse adjustment valve core 3 has an external thread 31 on its upper part, and the mixing valve core 2 has an internal thread 23 on its inner wall. The internal thread and the external thread 31 mesh with each other. The rotation of the threaded pair drives the valve core to move up and down axially, thereby adjusting the valve opening to control the fluid flow area and flow rate.

[0042] In one embodiment, the drive device 41 includes a micro motor that drives the second adjusting member 45 to rotate.

[0043] Furthermore, the drive device 41 also includes a coupling and a rotating shaft, with the micro motor, coupling, rotating shaft, and second adjusting member 45 connected in sequence. When the micro motor rotates, it can drive the second adjusting hole 44 to rotate around the axis, thereby changing the relative position of the second adjusting hole 44 and the first adjusting hole 42. The micro motor drive can achieve fine angle control, making the valve core opening adjustment more precise and ensuring the stability of flow rate and mixing ratio.

[0044] In one embodiment, the first adjusting member 43 is a hemispherical shell with a first adjusting hole 42, which is divided into an inlet 46 and an outlet 47; the second adjusting member 45 is a hemispherical shell with a second adjusting hole 44, which is divided into a connected inlet 46 and an outlet 47. This double-layer adjusting hole design combines coarse and fine adjustment functions, ensuring a wide range of flow regulation capabilities and enabling high-precision control through the second layer of arc-shaped holes, thereby improving the valve's flexibility, stability, and reliability.

[0045] Without loss of generality, both the first adjustment hole 42 and the second adjustment hole 44 can be circular.

[0046] In one embodiment, the coarse adjustment valve core 3 and the mixing valve core 2 are made of wear-resistant materials and may be combined with an anti-corrosion coating to reduce wear and extend valve life.

[0047] Without loss of generality, for ease of adjustment, a first handle 24 is installed at the upper end of the mixing valve core, or it is designed to be hexagonal (adjustable by a wrench), and a second handle 32 is installed at the upper end of the coarse adjustment valve core, or it is designed to be hexagonal (adjustable by a wrench).

[0048] Furthermore, through the adjustment of the upper and lower opening of the coarse adjustment valve core 3, the angle adjustment of the micro motor, and the proportional control of the mixing valve core 2, the three can work together: first, the coarse adjustment valve core 3 controls the overall flow rate, then the micro motor achieves precise adjustment, and finally the mixing valve core 2 achieves the control of the mixing ratio, thereby ensuring that the entire valve system can achieve stable, efficient and high-precision fluid regulation and mixing under multiple working conditions, adapting to the application requirements of various complex working conditions.

[0049] Other embodiments of this application will readily occur to those skilled in the art upon consideration of the specification and practice of the disclosure herein. This application is intended to cover any variations, uses, or adaptations of this application that follow the general principles of this application and include common knowledge or customary techniques in the art not disclosed herein. The specification and embodiments are to be considered exemplary only.

[0050] It should be understood that this application is not limited to the precise structure described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope.

Claims

1. A multi-stage regulating mixing control valve, characterized in that, include: The valve body has an interconnected inlet channel, an outlet channel, and a mixing channel, wherein the inlet channel and the outlet channel constitute the main channel. The mixing valve core is rotatably mounted on the valve body. By adjusting the opening degree, the flow rate of the mixing channel can be controlled, and the mixing ratio of different fluid media can be adjusted. A coarse adjustment valve core is adjustablely inserted into the mixing valve core to control the opening degree of the main channel; The fine-tuning structure includes a driving device, a first adjusting member with a first adjusting hole and a second adjusting member with a second adjusting hole. The first adjusting member is fixed to the bottom of the coarse-tuning valve core. The first adjusting member and the second adjusting member are in contact with each other. The driving device is installed inside the coarse-tuning valve core and is used to drive the second adjusting member to rotate, thereby adjusting the overlap of the first adjusting hole and the second adjusting hole to achieve fine-tuning of the flow rate.

2. The multi-stage regulating mixing valve according to claim 1, characterized in that, It also includes a valve cover, which is mounted on the valve body, and the mixing valve core passes through the valve cover.

3. The multi-stage regulating mixing valve according to claim 2, characterized in that, A sealing ring is installed between the mixing valve core and the valve body, and the sealing ring is fixed by the valve cover.

4. The multi-stage regulating mixing valve according to claim 1, characterized in that, The inlet channel is used to introduce the fluid medium; the outlet channel is used to discharge the fluid medium; and the mixing channel is used to introduce the fluid medium that needs to be mixed.

5. A multi-stage regulating mixing valve according to claim 1, characterized in that, The lower end of the mixing valve core has a cut. When the mixing valve core rotates, the fluid flow area between the cut and the mixing channel changes, thereby realizing the functions of opening and closing and regulating the flow rate.

6. The multi-stage regulating mixing valve according to claim 1, characterized in that, The coarse adjustment valve core has an external thread on its upper part, and the mixing valve core has an internal thread on its inner wall, with the internal thread and the external thread meshing with each other.

7. The multi-stage regulating mixing valve according to claim 1, characterized in that, The driving device includes a micro motor, which drives the second adjusting element to rotate.

8. A multi-stage regulating mixing control valve according to claim 7, characterized in that, The drive device also includes a coupling and a rotating shaft, and the micro motor, coupling, rotating shaft and second adjusting component are connected in sequence.

9. A multi-stage regulating mixing valve according to claim 1, characterized in that, The first adjusting member is a hemispherical shell with a first adjusting hole, which is divided into an inlet and an outlet; the second adjusting member is a hemispherical shell with a second adjusting hole, which is divided into a connected inlet and an outlet.

10. A multi-stage regulating mixing control valve according to claim 1, characterized in that, Both the coarse adjustment valve core and the mixing valve core are equipped with handles at their upper ends or are designed in an external hexagonal shape.

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