Self-adaptive flow regulating valve

Abstract

The self-adaptive flow regulating valve comprises a shell and a valve element assembly, the shell is provided with a fluid inlet, a fluid outlet and a fluid channel communicated with the fluid inlet and the fluid outlet, and the fluid channel is provided with a contraction section so that flowing fluid can form the Venturi effect; the valve element assembly comprises a sliding rail and an element body arranged on the sliding rail in a sliding mode. The core body moves along the fluid channel, and the throttling area of the contraction section can be changed, so that the flow change of fluid in the fluid channel is controlled; the elastic element is arranged on the side, close to the fluid outlet, of the core body, impact borne by the core body is buffered through the elastic element, so that pressure of high-flow fluid on the core body is resisted, limit displacement of the core body is limited, and it is ensured that flow adjustment meets the requirement. The self-adaptive flow adjusting valve can be applied to instruments for inputting media into a human body or conveying the media to the human body, the media can be blood, oxygen and the like, the flow is adjusted through the self-adaptive flow adjusting valve, the flow adjusting stability is improved, and the noise reduction effect of equipment is enhanced.

Description

Technical Field

[0001] The invention relates to the technical field of flow regulating equipment and peripheral supporting facilities thereof, and in particular to an adaptive flow regulating valve. Background Art

[0002] In the field of medical devices, many devices need to deliver various fluid media to the human body, such as oxygen, blood or drug solutions. The flow rate stability of these media directly affects the performance and treatment effect of medical devices. However, the flow control schemes in the prior art usually have problems such as insufficient adjustment accuracy, slow response and inability to adapt to complex working conditions, which leads to flow fluctuations during the delivery process. Such flow fluctuations will have an adverse impact on patient safety and equipment reliability.

[0003] For example, in an oxygen concentrator, flow fluctuations may not only cause excessive noise in the equipment, affecting the patient's experience, but may also weaken the efficiency of oxygen delivery. In extracorporeal perfusion equipment, the unevenness of blood flow may lead to unsatisfactory perfusion effects, thereby increasing the risk of blood damage and embolism. In addition, in scenarios where precise drug delivery is required, flow control fluctuations may directly affect the accuracy and effectiveness of treatment. Therefore, flow regulation facilities are crucial for medical devices.

[0004] Existing technologies usually rely on mechanical or electronic control valves to adjust flow. These solutions often cannot quickly adapt to complex working conditions (such as medium pressure changes, pipeline resistance fluctuations, etc.), making it difficult to ensure flow stability. In addition, some equipment relies on manual adjustment, which increases operational complexity and error risks.

[0005] Therefore, developing a regulating valve that can adaptively adjust the flow rate to solve the problems of low adjustment accuracy, insensitive response and poor adaptability in the prior art is of great significance for improving the performance of medical devices, ensuring patient safety and optimizing clinical effects. Summary of the invention

[0006] The purpose of the present invention is to provide an adaptive flow control valve to solve the problems existing in the above-mentioned related technologies, to adjust the fluid flow of the device that inputs the medium into the human body or onto the human body, to improve the flow control stability of the equipment, and to enhance the noise reduction effect of the equipment.

[0007] To achieve the above object, the present invention provides the following solutions: The present invention provides an adaptive flow control valve, comprising: A housing, the housing having a fluid inlet and a fluid outlet, and a fluid channel connecting the fluid inlet and the fluid outlet, the fluid channel having a contraction section so that the fluid flowing through the fluid forms a Venturi effect; A valve core assembly, the valve core assembly comprising a slide rail and a core body slidably arranged on the slide rail, the slide rail is connected to the shell, the core body is located in the fluid channel and on the side of the contraction section close to the fluid inlet, the core body is a rotating body structure and is coaxially arranged with the fluid channel, an elastic element is arranged on the side of the core body close to the fluid outlet, the elastic element is against the core body, the deformation direction of the elastic element is parallel to the fluid flow direction to cushion the fluid impact on the core body, and the axial cross-sectional area of ​​the elastic element is not greater than the minimum axial cross-sectional area of ​​the core body.

[0008] Preferably, the valve core assembly further comprises a limiting element, wherein the limiting element is located on a side of the elastic element away from the core body and the two are against each other.

[0009] Preferably, the limiting element is connected to the slide rail; The elastic element is a spring, and the elastic element is sleeved on the outside of the slide rail.

[0010] Preferably, the slide rail is a cylindrical structure, the core body has a sliding hole adapted to the slide rail, the core body is slidably sleeved on the outside of the slide rail, and the core body is coaxially arranged with the slide rail.

[0011] Preferably, along the flow direction of the fluid in the fluid channel, the axial cross-sectional area of ​​the core body follows a rule of gradually increasing first and then gradually decreasing.

[0012] Preferably, the contraction section is a body of revolution structure, and the contraction section is coaxially arranged with the core body.

[0013] Preferably, the shell is a split structure, and the shell includes a first pipe segment and a second pipe segment, the first pipe segment and the second pipe segment are detachably connected, and the first pipe segment and the second pipe segment are communicated to form the fluid channel.

[0014] Preferably, the first pipe section is threadedly connected or clamped to the second pipe section.

[0015] Preferably, both ends of the housing are provided with quick-connect connectors.

[0016] Compared with the related art, the present invention has achieved the following technical effects: the adaptive flow control valve of the present invention comprises a shell and a valve core assembly, wherein the shell has a fluid inlet and a fluid outlet, and a fluid channel connecting the fluid inlet and the fluid outlet, and the fluid channel has a contraction section so that the fluid flowing through forms a Venturi effect; the valve core assembly comprises a slide rail and a core body slidably arranged on the slide rail, the slide rail is connected to the shell, the core body is located in the fluid channel and is located on the side of the contraction section close to the fluid inlet, the core body is a rotating body structure and is coaxially arranged with the fluid channel, an elastic element is arranged on the side of the core body close to the fluid outlet, the elastic element is offset against the core body, and the deformation direction of the elastic element is parallel to the fluid flow direction to buffer the fluid impact on the core body, and the axial cross-sectional area of ​​the elastic element is not greater than the minimum axial cross-sectional area of ​​the core body.

[0017] The adaptive flow control valve of the present invention has a fluid channel formed in the inner cavity of the shell, and the fluid channel has a contraction section between the fluid inlet and the fluid outlet, so that the fluid forms a Venturi effect when flowing through the contraction section. At the same time, a valve core assembly is arranged in the fluid channel, and the valve core assembly includes a core body slidably arranged in the fluid channel, and the core body moves along the fluid channel, which can change the throttling area of ​​the contraction section, thereby controlling the change of the fluid flow in the fluid channel; an elastic element is arranged on the side of the core body close to the fluid outlet, and the elastic element is used to buffer the impact of the core body to resist the pressure of the high-flow fluid on the core body, and limit the extreme displacement of the core body to ensure that the flow regulation meets the demand. And when the adaptive flow control valve of the present invention is applied to an oxygen concentrator, the exhaust flow of the device is adjusted by the adaptive flow control valve, the instantaneous high flow at the initial stage of exhaust is reduced, and the exhaust flow is regulated to achieve uniform exhaust, thereby greatly enhancing the noise reduction effect of the device. When the adaptive flow control valve of the present invention is applied to an in vitro perfusion machine and an extracorporeal membrane oxygenation device for ensuring effective blood supply to the whole body, the fluid flow is adjusted by the adaptive flow control valve, which can cope with sudden changes in flow, adaptively play a buffering role, and effectively maintain the stability of the circuit flow. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or related technologies, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0019] Figure 1 It is a schematic diagram of the structure of the adaptive flow control valve disclosed in the embodiment of the present invention; Figure 2 It is a schematic cross-sectional structure diagram of the adaptive flow control valve disclosed in an embodiment of the present invention; Figure 3It is a structural schematic diagram of a core body of an adaptive flow control valve disclosed in an embodiment of the present invention; Figure 4 It is a structural schematic diagram of the installation components of the adaptive flow control valve disclosed in the embodiment of the present invention; Figure 5 It is a schematic diagram of a geometric model of a core body and a throttling area of ​​an adaptive flow control valve disclosed in an embodiment of the present invention; Figure 6 A schematic diagram of a cluster of equivalent area curves of different openings of an adaptive flow control valve disclosed in an embodiment of the present invention; Figure 7 It is a schematic diagram of the process of constructing the surface mathematical model of the core of the adaptive flow control valve disclosed in the embodiment of the present invention.

[0020] In the figure: 1. housing; 2. fluid inlet; 3. fluid outlet; 4. slide rail; 5. core; 6. limit element; 7. mounting element; 8. quick-connect connector; 9. elastic element. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0022] The purpose of the present invention is to provide an adaptive flow control valve to solve the problems existing in the above-mentioned related technologies, to adjust the fluid flow of the device that inputs the medium into the human body or onto the human body, to improve the flow control stability of the equipment, and to enhance the noise reduction effect of the equipment.

[0023] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0024] Embodiment 1 The present invention provides an adaptive flow control valve, please refer to Figure 1-Figure 7, comprising a housing 1 and a valve core assembly, wherein the housing 1 has a fluid inlet 2 and a fluid outlet 3, and a fluid channel connecting the fluid inlet 2 and the fluid outlet 3, the fluid channel having a contraction section so that the fluid flowing through forms a Venturi effect; the valve core assembly comprises a slide rail 4 and a core 5 slidably arranged on the slide rail 4, the slide rail 4 is connected to the housing 1, the core 5 is located in the fluid channel and is located on the side of the contraction section close to the fluid inlet 2, the core 5 is a rotating body structure and is coaxially arranged with the fluid channel, an elastic element 9 is arranged on the side of the core 5 close to the fluid outlet 3, the elastic element 9 is against the core 5, the deformation direction of the elastic element 9 is parallel to the fluid flow direction, so as to buffer the fluid impact on the core 5, and the axial cross-sectional area of ​​the elastic element 9 is not greater than the minimum axial cross-sectional area of ​​the core 5.

[0025] In the adaptive flow control valve of the present invention, the inner cavity of the housing 1 forms a fluid channel, and the fluid channel has a contraction section between the fluid inlet 2 and the fluid outlet 3, so that the fluid forms a Venturi effect when flowing through the contraction section. At the same time, a valve core assembly is arranged in the fluid channel, and the valve core assembly includes a core body 5 slidably arranged in the fluid channel, and the core body 5 moves along the fluid channel, and can change the throttling area of ​​the contraction section, thereby controlling the change of the fluid flow in the fluid channel; an elastic element 9 is arranged on the side of the core body 5 close to the fluid outlet 3, and the elastic element 9 is used to buffer the impact of the core body 5 to resist the pressure of the high-flow fluid on the core body 5, and limit the extreme displacement of the core body 5 to ensure that the flow regulation meets the demand. It is also necessary to explain here that in actual application, the elastic element 9 of appropriate specifications can be selected according to the different flow rates of the fluid entering the adaptive flow control valve, so as to use the compression elastic force of the elastic element 9 to adjust the displacement of the core body 5, realize the change of the throttling area, adjust the degree of pressurization when the fluid flows through the contraction section, and finally meet the fluid flow regulation demand.

[0026] In order to fix the position of the elastic element 9, the valve core assembly also includes a limiting element 6, which is located on the side of the elastic element 9 away from the core body 5 and the two are offset from each other to fix the position of the elastic element 9 and ensure that the elastic element 9 can play a role, so that the core body 5 uses the force of the elastic element 9 to restore the deformation to actively resist the pressure from the fluid.

[0027] In this specific embodiment, the limiting element 6 is connected to the slide rail 4 to limit the position of the elastic element 9 away from the end of the core 5, improve the stability of the limiting element 6, and ensure the working reliability of the elastic element 9. In practical applications, the end of the elastic element 9 away from the core 5 can also be fixedly arranged, fixed to the slide rail 4 or fixedly connected to the inner wall of the housing 1 to ensure the stability of the elastic element 9.

[0028] In other specific embodiments that can be realized by the present invention, the limit element 6 and the slide rail 4 can be detachably connected, and the relative position of the limit element 6 and the slide rail 4 can be adjusted according to the flow regulation requirements of the adaptive flow control valve, thereby adjusting the compressibility of the elastic element 9 and the displacement of the core 5, so that the adaptive flow control valve can adapt to various working conditions and improve the flexibility and adaptability of the adaptive flow control valve.

[0029] In this specific embodiment, the elastic element 9 is a spring, which is cheap and easy to obtain. The elastic element 9 is sleeved on the outside of the slide rail 4, which is convenient to install and replace. In practical applications, the elastic element 9 can also adopt other structural forms made of elastic materials, such as columnar or spherical structures. The elastic element 9 of the rotating body structure is conducive to improving the force uniformity of the core 5. It is also necessary to explain here that the area of ​​the axial cross-section of the elastic element 9 is not greater than the minimum axial cross-sectional area of ​​the core 5, so as to avoid the elastic element 9 affecting the regulation of the fluid flow.

[0030] Specifically, the slide rail 4 is a cylindrical structure, the core 5 has a sliding hole adapted to the slide rail 4, and the core 5 is slidably sleeved on the outside of the slide rail 4 to improve the sliding reliability of the core 5. Under the action of the fluid and the elastic element 9, the core 5 moves along the fluid channel to change the throttling area of ​​the contraction section and control the change of the fluid flow in the fluid channel. The core 5 is coaxially arranged with the slide rail 4 to improve the uniformity of the force on the core 5. In this specific embodiment, the slide rail 4 is made of a metal wire with a diameter of 0.5 mm and a length of 36.78 mm. In actual applications, the specifications of the slide rail 4 can be adjusted according to the actual application conditions of the adaptive flow control valve to meet different usage requirements.

[0031] In other specific implementations of the present invention, the slide rail 4 may adopt a prismatic structure, which can ensure the reliable sliding of the core 5 and prevent the core 5 from rotating.

[0032] In this specific embodiment, the contraction section is also a rotating body structure, and the contraction section is coaxially arranged with the core 5, that is, the contraction section, the core 5 and the slide rail 4 are coaxially arranged, so that the distance between the core 5 and the inner wall of the contraction section is always kept uniform during the reciprocating sliding of the core 5 along the slide rail 4, that is, the distance between the outer wall of the core 5 and the inner wall of the contraction section is equidistant, thereby minimizing the resistance of the adaptive flow control valve to the fluid, and ensuring the uniformity of the flow of the fluid while adjusting the fluid flow. In addition, it should be noted that in this specific embodiment, the profile of the axial section of the contraction section is a hyperbola.

[0033] It should also be noted that, along the flow direction of the fluid in the fluid channel, the axial cross-sectional area of ​​the core 5 follows the rule of gradually increasing first and then gradually decreasing. Reasonable setting of the contour shape of the core 5 and the contraction section can improve the boosting and throttling effect of the adaptive flow control valve and enhance the working performance of the adaptive flow control valve.

[0034] The working principle of the adaptive flow control valve of the present invention is to utilize the Venturi effect to increase the air pressure by reducing the throttling area. When the static pressure decreases, the force applied to the core 5 is smaller, which will cause the elastic element 9 in the fluid channel to restore the deformation; when the static pressure increases, the force applied to the core 5 is larger, the elastic element 9 is compressed, and the core 5 moves toward the direction of the fluid outlet 3 to maintain the air volume. When the adaptive flow control valve of the present invention is used in an instrument that inputs a medium into or onto the human body, at high flow, the pressure difference between the inside and outside of the adaptive flow control valve increases, and the core 5 is sucked toward the contraction section, resulting in an increase in the resistance of the fluid channel, thereby reducing the flow; at low flow, the pressure difference between the inside and outside of the adaptive flow control valve decreases, and the core 5 moves away from the contraction section, resulting in a decrease in the flow channel resistance, thereby increasing the flow.

[0035] According to the Venturi effect, the critical flow value of the adjustable Venturi tube is: (1) in, C is the outflow coefficient, p* is the total pressure, T* is the total temperature, k is the specific heat ratio, R is the gas constant, A t is the throttling area.

[0036] The standard Venturi flow formula is: (2) in, is the mass flow rate, C is the outflow coefficient, ε is the expansion coefficient, d is the throat diameter of the Venturi tube, β is the ratio of the throat diameter of the venturi tube to the inlet diameter of the venturi tube, ρ 1 is the fluid density, ∆p is the pressure difference between the inlet of the venturi tube and the throat of the venturi tube.

[0037] It can be seen that under the conditions of a certain gas type, constant flow coefficient, total pressure and total temperature, the flow rate is only a function of the throttling area. Therefore, it is feasible for the present invention to achieve a change in the throttling area and control the change in the flow rate by moving the core 5.

[0038] The design of the adaptive flow control valve of the present invention mainly includes the design of the core 5 structure and the design of the fluid channel shape. In this specific embodiment, the core 5 of different shapes is first simulated and compared. The most common transverse core 5 shapes are selected, including a straight cylinder with a smooth top surface, an arc shape with a protruding spherical top surface, and a parabola shape with a top surface set according to a curve. The simulated geometric model is as follows: Figure 5 shown.

[0039] The flow field equations are solved by ANSYS Fluent simulation software to obtain detailed information on the flow field inside the adaptive flow control valve structure.

[0040] Through the pre-simulation results, it is found that the throttling area needs to be taken as the main direction of the core 5 curve optimization. If the throttling area of ​​the core 5 curve and the fluid channel curve change less during the supercharging process, a better supercharging and throttling effect can be obtained. Therefore, through research and calculation, the envelope method is used to solve the core 5 curve. The relevant parameters and effects are as follows Figure 6 As shown. From the valve seat (i.e. the narrowest part of the contraction section), multiple rays with the same flow area but different angles can be drawn; the rays can form an iso-area curve corresponding to the flow area; taking the envelope of the iso-area curve under different openings, the shape of the core 5 can be obtained, and further the calculation formula of the core 5 curve can be obtained.

[0041] If the pressure difference before and after the adaptive flow control valve ΔP is a constant, and the flow resistance coefficient of the adaptive flow control valve ξ If the flow rate is determined and remains constant, then the flow rate is mainly related to the flow area. Assuming that they are proportional, it is obvious that: (3) In the formula, A / A max is the relative flow area, A is the flow area of ​​a certain opening of the adaptive flow control valve, A max is the flow area when fully open.

[0042] The mathematical integral expression of the linear flow characteristic is: (4) There is the following relationship between the flow area A and the valve seat channel hole area: (5) After deduction, the mathematical model of the core 5 with linear flow characteristics is as follows: In the formula, please combine Figure 7 , y is the ordinate of the moving point N on the core body 5 surface; x is the horizontal coordinate of the moving point N on the core body 5 surface; θis the angle between the line connecting MN and the plane where MM1 is located; Lmax is the displacement of the core 5 when the adaptive flow control valve is fully opened; Lmin is the displacement of the core 5 when the adaptive flow control valve is at a certain opening; K and C are both constants; D is the inner diameter of the valve seat passage hole; Amax is the flow area when the adaptive flow control valve is fully open; R is the adjustable ratio; It should be noted that the specific construction process of the surface mathematical model of the core 5 can be found in the detailed record in the book "Practical Technology of Control Valve" (Lu Peiwen, Machinery Industry Press, 2006).

[0043] More specifically, the housing 1 is a split structure, and the housing 1 includes a first pipe section and a second pipe section, the first pipe section and the second pipe section are detachably connected, and the first pipe section and the second pipe section are connected to form a fluid channel. The housing 1 adopts a split structure, which facilitates the disassembly and replacement of the valve core assembly. In other specific embodiments that can be realized by the present invention, a mounting element 7 can also be provided to fix the end of the slide rail 4, and the mounting element 7 is detachably connected to the housing 1, further improving the convenience of disassembly and assembly of the adaptive flow control valve, and providing convenience for subsequent replacement of parts.

[0044] In practical applications, the first pipe section and the second pipe section can be connected by threading or by clamping, so as to improve the convenience of assembling the first pipe section and the second pipe section.

[0045] In order to facilitate the connection between the adaptive flow control valve and other components, both ends of the housing 1 are provided with quick-connect connectors 8, which improves the adaptability and operation convenience of the adaptive flow control valve.

[0046] Embodiment 2 This embodiment provides a device for inputting a medium into or onto a human body, including the adaptive flow regulating valve of the first embodiment, which adjusts the exhaust flow of the device through the adaptive flow regulating valve, reduces the instantaneous high flow at the initial stage of exhaust, and regulates the exhaust flow to achieve uniform exhaust, thereby greatly enhancing the noise reduction effect of the device. The noise of the device in the prior art comes from the exhaust noise, which is exhausted once every certain period of time, and there is a pressure difference inside and outside the exhaust valve. The instantaneous gas flow is large at the initial stage of exhaust, and the noise is obvious, while the gas flow is small at the later stage of exhaust.

[0047] When the adaptive flow regulating valve of Example 1 is applied to an oxygen concentrator, the exhaust flow of the device is adjusted by the adaptive flow regulating valve to reduce the instantaneous high flow at the initial stage of exhaust, and the exhaust flow is regulated to achieve uniform exhaust, thereby greatly enhancing the noise reduction effect of the device. Compared with the noise reduction method of wrapping sound insulation materials in the prior art, the device of the present invention that inputs the medium into or onto the human body adopts an active noise reduction method, which occupies a small space. The present invention utilizes an adaptive flow regulating valve to play a role in stabilizing flow and increasing pressure, and can automatically change the compression degree of the elastic element 9 and the pressurization degree of the adjusting core 5 according to the different flow rates at the fluid inlet 2, thereby achieving active adjustment and noise reduction. The adaptive flow regulating valve of the present invention can adjust the flow in real time under dynamic conditions, ensure the stability and consistency of fluid delivery, and reduce the complexity of operation, providing a more efficient and reliable solution for the medical field.

[0048] It should also be noted that the device of this embodiment that inputs a medium into or onto the human body can be blood, oxygen, etc., which is determined according to the specific working conditions. For example, extracorporeal perfusion machines and extracorporeal membrane oxygenation devices that are used to ensure effective blood supply to the whole body can adjust the fluid flow through an adaptive flow control valve, which can cope with sudden changes in flow, adaptively play a buffering role, and effectively maintain the stability of the circuit flow.

[0049] The present invention uses specific examples to illustrate the principles and implementation methods of the present invention. The above examples are only used to help understand the method and core ideas of the present invention. At the same time, for those skilled in the art, according to the ideas of the present invention, there will be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as limiting the present invention.

Claims

1. An adaptive flow control valve, characterized in that: include: A housing, the housing having a fluid inlet and a fluid outlet, and a fluid channel connecting the fluid inlet and the fluid outlet, the fluid channel having a contraction section so that the fluid flowing through the fluid forms a Venturi effect; A valve core assembly, the valve core assembly comprising a slide rail and a core body slidably arranged on the slide rail, the slide rail is connected to the shell, the core body is located in the fluid channel and on the side of the contraction section close to the fluid inlet, the core body is a rotating body structure and is coaxially arranged with the fluid channel, an elastic element is arranged on the side of the core body close to the fluid outlet, the elastic element is against the core body, the deformation direction of the elastic element is parallel to the fluid flow direction to cushion the fluid impact on the core body, and the axial cross-sectional area of ​​the elastic element is not greater than the minimum axial cross-sectional area of ​​the core body.

2. The adaptive flow control valve according to claim 1, characterized in that: The valve core assembly further comprises a limiting element, and the limiting element is located at a side of the elastic element away from the core body and the two are against each other.

3. The adaptive flow control valve according to claim 2, characterized in that: The limiting element is connected to the slide rail; The elastic element is a spring, and the elastic element is sleeved on the outside of the slide rail.

4. The adaptive flow control valve according to claim 1, characterized in that: The slide rail is a cylindrical structure. The core body has a sliding hole matched with the slide rail. The core body is slidably sleeved on the outside of the slide rail. The core body and the slide rail are coaxially arranged.

5. The adaptive flow control valve according to any one of claims 1 to 4, characterized in that: Along the flow direction of the fluid in the fluid channel, the axial cross-sectional area of ​​the core body follows the rule of gradually increasing first and then gradually decreasing.

6. The adaptive flow control valve according to claim 5, characterized in that: The contraction section is a rotating body structure, and the contraction section is coaxially arranged with the core body.

7. The adaptive flow control valve according to claim 1, characterized in that: The shell is a split structure, and the shell includes a first pipe section and a second pipe section. The first pipe section and the second pipe section are detachably connected, and the first pipe section and the second pipe section are communicated to form the fluid channel.

8. The adaptive flow control valve according to claim 7, characterized in that: The first pipe section is threadedly connected or clamped with the second pipe section.

9. The adaptive flow control valve according to claim 1, characterized in that: Both ends of the housing are provided with quick-insertion connectors.

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