A fluid regulating valve, a fluid circulating system, a terminal

Abstract

The application provides a fluid regulating valve, a fluid circulating system and a terminal. The fluid regulating valve comprises a shell and a flow resistance rod. The shell is provided with a liquid inlet, a liquid outlet and a first cavity. The liquid inlet is located on the lateral side of the shell, the liquid outlet is located on the end of the shell, and the liquid inlet and the liquid outlet are both communicated with the first cavity. The flow resistance rod is provided with a first through hole, a second through hole and a second cavity. The flow resistance rod is located in the first cavity. The first through hole penetrates the end of the flow resistance rod and is communicated with the second cavity. The first through hole faces the liquid outlet. The second through hole is in a plurality. The second through hole penetrates the lateral side of the flow resistance rod and is communicated with the second cavity. The plurality of second through holes are arranged in an array on the lateral surface of the flow resistance rod. At least one second through hole can face the liquid inlet. The flow resistance rod can move in the first cavity along the length direction. The application can linearly regulate the impedance of the fluid, so that the flow rate regulation of the fluid is more accurate.

Description

Technical Field

[0001] This application relates to the field of valves, specifically to a fluid control valve, a fluid circulation system, and a terminal. Background Technology

[0002] Currently, flow control valves are used in some fluid circulation systems to control fluid flow. However, under current technological conditions, common flow control valves such as ball valves and orifice valves cannot continuously and linearly adjust resistance; they cannot predictably and linearly adjust fluid resistance through changes in valve opening. For example, when the valve opening is finely adjusted within a certain range, the fluid resistance may change drastically, while in another range, even with a large change in opening, the resistance may remain almost unchanged. This non-linear relationship between valve opening and fluid resistance results in low controllability of flow control valves, significantly limiting their application scenarios. Utility Model Content

[0003] Embodiments of this application provide a fluid regulating valve, a fluid circulation system, and a terminal, which can linearly regulate the resistance of the fluid, making the fluid flow rate regulation more precise.

[0004] In a first aspect, this application provides a fluid regulating valve, including a housing and a flow-blocking rod. The housing has an inlet, an outlet, and a first cavity. The inlet is located on the periphery of the housing, and the outlet is located at the end of the housing. Both the inlet and the outlet are in communication with the first cavity.

[0005] The flow-blocking rod has a first through hole, a second through hole, and a second cavity. The flow-blocking rod is located in the first cavity. The first through hole penetrates the end of the flow-blocking rod and communicates with the second cavity. The first through hole faces the liquid outlet. There are multiple second through holes. The second through holes penetrate the periphery of the flow-blocking rod and communicate with the second cavity. The multiple second through holes are arranged in an array on the periphery of the flow-blocking rod. The flow-blocking rod can move along its length in the first cavity so that the first through hole is closer to or farther away from the liquid outlet. When the fluid regulating valve is in the open state, at least one second through hole can face the liquid inlet. Fluid can pass through the liquid inlet, the second through hole, and the second cavity in sequence, and flow into the first cavity from the first through hole, and then flow out through the liquid outlet.

[0006] In this embodiment, the inlet of the fluid regulating valve allows fluid to enter. Then, the fluid enters the second chamber of the flow-blocking rod located in the first chamber through the second through-hole. The fluid inside the flow-blocking rod can flow out of the second chamber through the first through-hole and flow towards the outlet, thus exiting the fluid regulating valve. The cross-sectional area of ​​the second chamber of the flow-blocking rod is smaller than that of the first chamber. Generally, under the same pressure difference and fluid properties, the thinner the tube, the smaller the flow rate per unit time. The flow-blocking rod can reduce the volume of fluid passing through per unit time, thereby adjusting the fluid resistance. When the flow-blocking rod slides within the first chamber, the distance between the first through-hole and the inlet of the flow-blocking rod can be changed, thereby changing the effective length of the flow-blocking rod in the fluid flow path. The effective length of the flow-blocking rod that blocks the fluid changes proportionally to the fluid pressure; therefore, by adjusting the position of the flow-blocking rod, the fluid pressure can be changed linearly.

[0007] Fluid control valves can adjust fluid pressure in an approximately linear fashion, providing precise, stable, and predictable flow regulation capabilities. Firstly, linear regulation means that changes in valve opening are directly proportional to changes in flow velocity; that is, for every fixed increase in opening, the flow velocity increases by roughly the same proportion. This characteristic allows operators to quickly and accurately set the target flow velocity through simple opening control, avoiding the repeated adjustments and error accumulation caused by the complex relationship between valve opening and flow velocity in nonlinear regulation.

[0008] In addition, linear regulation improves the system's stability and response speed. In scenarios requiring dynamic flow rate adjustment, linear valves can quickly and smoothly adjust their opening based on sensor feedback, synchronizing flow rate changes with system demands, reducing overshoot or lag, and thus maintaining stable system operation.

[0009] Taking a blood pressure monitor as an example, it captures blood pressure signals by detecting pressure fluctuations caused by arterial blood flow obstruction and recovery. If the fluid regulating valve cannot achieve linear adjustment, the air flow rate in the blood pressure monitor may fluctuate during deflation, leading to a sudden drop or fluctuation in cuff pressure. These fluctuations can cause pressure signal distortion and reduce measurement accuracy. Increased turbulence can also accelerate the wear of air circuit components and shorten the lifespan of the device.

[0010] By precisely controlling the linear regulating valve, the blood pressure monitor can achieve a slow and uniform deflation process, ensuring stable pressure signal transmission, thereby improving measurement accuracy, patient comfort, and equipment reliability. Similar principles are also applied in medical infusion pumps and industrial flow control, highlighting the crucial role of linear regulation in preventing turbulence.

[0011] In one possible implementation, the fluid regulating valve further includes a porous structure that fills the second cavity of the flow-blocking rod. The porous structure has a fluid channel that communicates with both the second through hole and the first through hole.

[0012] In this embodiment, the porous structure contains numerous interlaced micropores forming fluid channels. When fluid flows through these channels, it must bypass the pore walls and repeatedly change direction. The tortuous path of the pores prolongs the actual flow distance of the fluid, while the friction of the pore walls further consumes the fluid's kinetic energy, increasing the overall flow resistance of the flow-blocking rod and reducing the flow velocity of the fluid passing through it. This enhances the flow-blocking rod's ability to impede fluid, allowing it to adjust the fluid velocity over a wider range, thus making the fluid regulating valve suitable for more application scenarios.

[0013] Furthermore, turbulence is usually caused by excessively high flow velocities or abrupt changes in flow direction. Porous structures, by dispersing fluid kinetic energy, break large-scale vortices into smaller eddies, thus making the flow state tend towards uniform laminar flow. In addition, the guiding effect of the pores in the porous structure can prevent local acceleration of the fluid, reducing the conditions for turbulence generation at its source. Turbulence is a major source of noise and vibration in pipe structures. Porous structures, by suppressing turbulence, can significantly reduce fluid impact noise and mechanical vibration, thereby extending the service life of fluid control valves.

[0014] In one possible implementation, the fluid regulating valve further includes a seal that is clamped between the peripheral surface of the flow-blocking rod and the cavity wall of the first cavity, and the seal is disposed around the outer periphery of the flow-blocking rod.

[0015] In this embodiment, the seal fills the gap between the flow-blocking rod and the cavity wall of the first cavity. This ensures that all the fluid flows out through the first through hole after passing through the flow-blocking rod, preventing fluid diversion and subsequent convergence to form turbulence.

[0016] In one possible implementation, there are multiple seals, which are spaced apart along the length of the flow-blocking rod.

[0017] In this embodiment, multiple seals can form multiple sealing barriers to prevent fluid from passing through the gap between the seal and the outer peripheral surface of the flow-blocking rod, or between the seal and the cavity wall of the first cavity.

[0018] In one possible implementation, the seal is fixedly connected to the outer periphery of the flow-blocking rod, or the seal is fixedly connected to the cavity wall of the first cavity.

[0019] In this embodiment, when the seal is fixed to the outer periphery of the flow-blocking rod, the seal only needs to rub against the cavity wall of the first cavity when the flow-blocking rod slides relative to the first cavity; the seal does not need to rub against the outer peripheral surface of the flow-blocking rod. Since the circumferential side of the flow-blocking rod has many openings of second through holes, and the circumferential side of the flow-blocking rod is rougher than the inner wall of the first cavity, fixing the seal to the outer periphery of the flow-blocking rod can prevent damage to the seal caused by frequent friction between the seal and the outer peripheral surface of the flow-blocking rod.

[0020] In scenarios where the seal is fixed to the cavity wall of the first cavity, the seal can be directly connected to the inside of the first cavity. Since the cavity wall inside the first cavity can connect to the outer circumferential surface of the seal, compared to connecting the inner circumferential surface of the seal to the flow-blocking rod, connecting the seal inside the first cavity results in a larger connection area. Therefore, the connection stability between the seal and the cavity wall of the first cavity is stronger, preventing the seal from detaching from the outer shell and the flow-blocking rod, thus avoiding loss of sealing function. Furthermore, the flow-blocking rod requires a through-hole fabrication process; therefore, connecting the seal to the outer circumference of the flow-blocking rod must avoid the through-hole location, making processing more difficult and costly. Directly installing the seal inside the outer shell is easier to implement, has relatively lower manufacturing costs, and a relatively higher yield rate.

[0021] In one possible implementation, the fluid regulating valve further includes a push rod connected to the end of the flow-blocking rod away from the outlet, and the push rod can drive the flow-blocking rod to move within the first cavity under the action of an external force.

[0022] In this embodiment, the push rod can provide an operating position for the movement of the flow-blocking rod. The operator can apply external force to the push rod to extend or shorten the effective length of the flow-blocking rod that blocks the fluid.

[0023] In one possible implementation, the housing is provided with a push rod mounting hole, which is located opposite to the liquid outlet in the longitudinal direction of the housing, and the wall of the push rod mounting hole is threadedly connected to the push rod.

[0024] In this embodiment, the operator can rotate the portion of the push rod located outside the housing to rotate the thread of the push rod relative to the thread of the push rod mounting hole, so that the push rod can move in its length direction, thereby driving the flow-blocking rod located inside the housing to move.

[0025] In one possible implementation, the cavity wall of the first cavity is threadedly connected to the outer peripheral surface of the flow-blocking rod.

[0026] In this embodiment, the cavity wall of the first cavity and the outer peripheral surface of the flow-blocking rod are engaged by threads. When the cavity wall of the first cavity is connected to the outer peripheral surface of the flow-blocking rod, rotating the flow-blocking rod causes the thread sides of the internal and external threads to press against each other, generating radial contact pressure. This pressure causes a slight elastic deformation of the flow-blocking rod or the cavity wall of the first cavity, filling the microscopic gaps between the threads and forming an initial seal. This prevents fluid from passing between the flow-blocking rod and the cavity wall of the first cavity, ensuring that all the fluid flows out through the first through hole after passing through the flow-blocking rod. This prevents fluid from splitting and then converging to form turbulence, thus preventing turbulence from affecting the flow rate control accuracy of the fluid regulating valve.

[0027] In one possible implementation, the outer casing is provided with a push rod mounting hole, which is located opposite to the liquid outlet in the longitudinal direction of the outer casing. The push rod includes a sealing section and an operating section. The sealing section is connected to the end of the flow-blocking rod opposite to the liquid outlet and is sealed to the cavity wall of the first cavity. One end of the operating section is connected to the sealing section, and the other end extends out relative to the push rod mounting hole.

[0028] In this embodiment, when it is necessary to close the fluid regulating valve, the sealing section of the push rod can cover the inlet and the sealing section can be used to block the fluid entering the housing through the inlet from passing through the flow-blocking rod, thereby closing the fluid regulating valve.

[0029] In one possible implementation, when the fluid regulating valve is in the closed state, the second through hole is misaligned with the liquid inlet.

[0030] In one possible implementation, the fluid regulating valve further includes an inlet pipe connected to the housing and covering the inlet, the interior of which communicates with the first cavity.

[0031] Secondly, this application also provides a fluid circulation system, including a fluid channel and a fluid regulating valve as described above, wherein the fluid regulating valve is connected in the fluid channel and is capable of regulating the fluid pressure of the fluid channel.

[0032] Thirdly, this application also provides a terminal, including a fluid circulation system as described above, wherein the fluid circulation system is installed on the body. Attached Figure Description

[0033] To more clearly illustrate the technical solution of this application, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0034] Figure 1 This is a schematic diagram of the structure of the fluid circulation system provided in the embodiments of this application;

[0035] Figure 2 yes Figure 1 A schematic cross-sectional view of the fluid control valve shown.

[0036] Figure 3 yes Figure 2 The diagram shows a cross-sectional view of the fluid regulating valve in the closed state.

[0037] Figure 4 yes Figure 1 Another cross-sectional schematic diagram of the fluid regulating valve shown;

[0038] Figure 5 yes Figure 1 Another cross-sectional schematic diagram of the fluid control valve is shown, in which the fluid control valve is in the open state;

[0039] Figure 6 yes Figure 5 The diagram shows the structure of the fluid regulating valve in its closed state.

[0040] Figure 7 yes Figure 1 The diagram shows a cross-sectional view of the seal of the fluid regulating valve connected to the housing.

[0041] Figure 8 yes Figure 1 The diagram shows a cross-sectional view of the seal of the fluid regulating valve connected to the flow control rod. Detailed Implementation

[0042] The specific embodiments of this application will now be described in more detail with reference to the accompanying drawings. Although exemplary embodiments of this application are shown in the drawings, it should be understood that this application may be implemented in other ways different from those described herein, and therefore, this application is not limited to these embodiments.

[0043] For ease of understanding, the terminology used in the embodiments of this application will be explained first.

[0044] Multiple: refers to two or more.

[0045] Connection: should be interpreted broadly. For example, the connection between A and B can be a direct connection between A and B, or an indirect connection between A and B through an intermediary.

[0046] The specific embodiments of this application will now be clearly described in conjunction with the accompanying drawings.

[0047] This application also provides a terminal, including a body and a fluid circulation system. The fluid circulation system is installed on the body. The terminal can be a server, base station, computer, mobile phone, vehicle, or other device. The body can be the structural frame of the aforementioned device. During operation, the terminal's central processing unit (CPU), power module (including digital-to-analog converter), and other components generate heat. The fluid circulation system can be a liquid cooling system within the terminal. The liquid cooling system is in close contact with the heat-generating components, and by controlling the flow of fluid within the liquid cooling system, the heat from the heat-generating components is removed. The coolant in the liquid cooling system can be water, ethylene glycol solution, fluorinated liquid, or other refrigerants; this application does not impose any limitations.

[0048] Alternatively, the terminal can also serve as a blood flow simulation device. This device can provide a simulated human body structure for blood pressure monitors and other devices that measure blood pressure, allowing for experiments on the measurement methods and accuracy of these devices. In this case, the terminal itself can be the casing or other structural components of the simulated blood pressure device. The fluid circulation system can be a system that supplies fluid flow. During fluid circulation, the blood pressure measuring device can test flow data. Blood flow simulation devices can be applied in scenarios requiring the provision of blood impedance, such as in medical research scenarios involving artificial heart valves, vascular stents, and artificial hearts.

[0049] Alternatively, fluid circulation systems can also be applied to chemical synthesis processes in industrial production. For example, a fluid circulation system can control the fluids used in a chemical synthesis process to ensure that the fluid flow state meets the preparation requirements. The fluid can be liquid raw materials used in the chemical synthesis process.

[0050] For ease of description, the following text uses a fluid circulation system as an example to simulate human blood circulation, but it should be understood that the terminal is not limited to this.

[0051] A fluid circulation system includes a fluid path and devices connected to that path. The fluid path can mimic the vascular system in the human body. Devices along the fluid path can make the fluid flow resistance of the circulation system more similar to that of blood vessels. These devices can be structures such as fluid control valves. Fluid control valves adjust the resistance to the fluid by varying the degree of valve opening and closing.

[0052] Specifically, please refer to Figure 1 , Figure 1 This is a schematic diagram of the structure of the fluid circulation system 100 provided in this embodiment. The fluid circulation system 100 includes a power pump 10, an aortic branch 20, a test section branch 30, and a return path 40. The aortic branch 20 and the test section branch 30 are connected in parallel, with one end connected to the outlet of the power pump 10 and the other end connected to the return path 40. The end of the return path 40 furthest from the aortic branch 20 and the test section branch 30 is connected to the inlet of the power pump 10.

[0053] It should be noted that, Figure 1The purpose of this illustration is solely to depict the connection relationships of the power pump 10, aortic branch 20, test section branch 30, and return path 40, and is not to specifically limit the connection positions, specific structures, or quantities of each device. Furthermore, the structures illustrated in this application's embodiments do not constitute a specific limitation on the fluid circulation system 100. In other embodiments of this application, the fluid circulation system 100 may include more or fewer components than illustrated, or combine certain components, or split certain components, or have different component arrangements. The illustrated components may be implemented in hardware, software, or a combination of both.

[0054] Please continue reading. Figure 1 The aortic branch 20 may be equipped with at least one fluid regulating valve R1. The fluid regulating valve R1 is used to adjust the pressure of the fluid in the aortic branch 20.

[0055] In this embodiment, the fluid regulating valve R1 can regulate the fluid pressure of the aortic branch 20, so that the fluid pressure of the aortic branch 20 can simulate the blood pressure of the aorta in the human body.

[0056] The test section branch 30 may be equipped with a flow sensor F, a pressure sensor P1, and a test structure 31. The flow sensor F, pressure sensor P1, and test structure 31 may be connected in series on the test section branch 30. The test structure 31 may simulate the structure of a human arm.

[0057] In this embodiment, the flow sensor F measures the flow rate of the fluid. The flow sensor F converts the fluid flow information into a quantifiable electrical signal or other form of signal, allowing the flow velocity information of the test section branch 30 to be read. The pressure sensor P1 detects the fluid pressure on the test section branch 30 and converts the fluid pressure into a quantifiable electrical signal or other form of signal, thereby simulating blood pressure measured on a human arm, and the fluid pressure of the test section branch 30 can be read.

[0058] For example, the test section branch 30 may also be equipped with a fluid regulating valve R3. The fluid regulating valve R3 is used to adjust the pressure of the fluid in the test section branch 30. For example, a compliance cavity 11 may also be provided between the power pump 10 and the ends of the aortic branch 20 and the test section branch 30. The compliance cavity 11 can further enhance the fluid buffering capacity of the fluid circulation system 100, so that the flow state of the fluid in the fluid circulation system 100 can better simulate the flow state of blood in blood vessels. The fluid may be water.

[0059] The return path 40 may be equipped with a fluid regulating valve R2 and a fluid tank 41. The fluid flow direction is such that the fluid regulating valve R2 and the fluid tank 41 are connected in series.

[0060] In this embodiment, the fluid regulating valve R2 can adjust the pressure of the fluid in the return path 40 to simulate the blood flow pressure in the human body. The fluid tank 41 can stabilize the pressure of the fluid circulation system 100 and buffer the fluctuations in fluid flow rate when the power of the power pump 10 changes.

[0061] Fluid regulating valve R2 can change the resistance to the fluid, thereby changing the pressure of the fluid in its path. The structure of the fluid regulating valve R2 described above can be the same as that of the fluid control valve R2.

[0062] Currently, flow control valves are used in some fluid circulation systems to control fluid flow. However, under current technological conditions, common flow control valves such as ball valves and orifice valves cannot continuously and linearly adjust resistance; they cannot predictably and linearly adjust fluid resistance through changes in valve opening. For example, when the valve opening is finely adjusted within a certain range, the fluid resistance may change drastically, while in another range, even with a large change in opening, the resistance may remain almost unchanged. This non-linear relationship between valve opening and fluid resistance results in low controllability of flow control valves, significantly limiting their application scenarios.

[0063] Based on this, please refer to Figure 2 , Figure 2 yes Figure 1 The diagram shows a cross-sectional view of fluid control valve R1, in which fluid control valve R1 is in the open state. It should be noted that the structures of fluid control valves R1, R2, and R3 can be the same. The following description uses the structure of fluid control valve R1 as an example. The structures of fluid control valves R2 and R3 can be referred to the description of the structure of fluid control valve R1.

[0064] The fluid regulating valve R1 includes a housing 21 and a flow-restricting rod 22. The flow-restricting rod 22 is located inside the housing 21. The flow-restricting rod 22 can move inside the housing 21 to adjust the resistance of the fluid regulating valve R1 to the fluid.

[0065] Specifically, the outer casing 21 may be cylindrical. The outer casing 21 has a liquid inlet 211, a liquid outlet 212, and a first cavity 213. The first cavity 213 is located inside the outer casing 21. The liquid inlet 211 is located on the periphery of the outer casing 21. The liquid inlet 211 connects the first cavity 213 to the outside of the outer casing 21. The liquid outlet 212 is located at the end of the outer casing 21. The liquid outlet 212 connects the first cavity 213 to the outside of the outer casing 21.

[0066] For example, the fluid regulating valve R1 also includes an inlet pipe 50. The inlet pipe 50 is connected to the housing 21 and covers the inlet port 211. The interior of the inlet pipe 50 communicates with the first cavity 213.

[0067] The flow-blocking rod 22 can be columnar. The flow-blocking rod 22 has a first through hole 221, a second through hole 222, and a second cavity 223. The second cavity 223 is located inside the flow-blocking rod 22. The first through hole 221 penetrates through the end of the flow-blocking rod 22. The first through hole 221 connects the second cavity 223 to the outside of the flow-blocking rod 22. For example, there can be one or more first through holes 221. Multiple first through holes 221 can be arranged in an array on the end face of the flow-blocking rod 22. The second through hole 222 penetrates through the peripheral side of the flow-blocking rod 22. The second through hole 222 connects the second cavity 223 to the outside of the flow-blocking rod 22. For example, there can be multiple second through holes 222, arranged in an array on the peripheral surface of the flow-blocking rod 22.

[0068] The flow-blocking rod 22 is installed inside the first cavity 213. The first through hole 221 of the flow-blocking rod 22 faces the liquid outlet 212 of the outer shell 21. The second through hole 222 of the flow-blocking rod 22 faces the cavity wall of the first cavity 213 of the outer shell 21.

[0069] The flow-restricting rod 22 is movable along its length within the first cavity 213. The fluid regulating valve R1 includes an open state and a closed state; please refer to the following section. Figure 2 When the fluid regulating valve R1 is in the open state, at least one second through hole 222 is connected to the inlet 211. At this time, the inlet 211 of the fluid regulating valve R1 can allow fluid to enter the interior of the fluid regulating valve R1. Then, the fluid enters the second cavity 223 of the flow-blocking rod 22 located in the first cavity 213 through the second through hole 222. The fluid in the flow-blocking rod 22 can flow out of the second cavity 223 through the first through hole 221 to the first cavity 213, and then flow towards the outlet 212, thereby flowing out of the fluid regulating valve R1.

[0070] Please see Figure 3 , Figure 3 yes Figure 2 The diagram shows a cross-sectional view of the fluid regulating valve R1 in the closed state. When the fluid regulating valve R1 is closed, the second through hole 222 is misaligned with the inlet 211. At this time, the flow-blocking rod 22 can be located entirely within the first cavity 213 between the outlet 212 and the inlet 211. Since the end face of the flow-blocking rod 22 away from the first through hole 221 does not have a through hole, fluid cannot pass through the flow-blocking rod 22, thereby closing the fluid regulating valve R1.

[0071] In this embodiment, the cross-sectional area of ​​the second cavity 223 of the flow-blocking rod 22 is smaller than that of the first cavity 213. Generally, under the same pressure difference and fluid properties, the thinner the tube, the greater the resistance of the phase fluid passing through per unit time. When the flow-blocking rod 22 slides within the first cavity 213, the distance between the first through hole 221 and the inlet 211 of the flow-blocking rod 22 can be changed, thereby changing the effective length of the flow-blocking rod 22 in the fluid flow path. The effective length of the flow-blocking rod 22 that blocks the fluid changes proportionally to the fluid pressure. Therefore, by adjusting the position of the flow-blocking rod 22, the fluid pressure can be changed linearly.

[0072] The fluid control valve R1 can linearly adjust the flow rate, thus providing precise, stable, and predictable flow regulation capabilities. Firstly, linear regulation means that changes in valve opening are directly proportional to changes in flow rate; that is, for every fixed increase in valve opening, the flow rate increases by the same proportion. This characteristic allows operators to quickly and accurately set the target flow rate through simple opening control, avoiding the repeated adjustments and error accumulation caused by the complex relationship between valve opening and flow rate in nonlinear regulation.

[0073] In addition, linear regulation improves the stability and response speed of the fluid circulation system 100. In scenarios where dynamic flow rate adjustment is required, the fluid regulating valve R1 can quickly and smoothly adjust its opening based on sensor feedback, so that the flow rate change is synchronized with the demand of the fluid circulation system 100, reducing overshoot or lag, thereby maintaining the smooth operation of the fluid circulation system 100.

[0074] The linear regulation characteristic of the fluid regulating valve R1 enables precise control of the linear relationship between valve opening and flow velocity, allowing the fluid to flow at a uniform and stable speed within the pipeline, thereby effectively suppressing turbulence caused by sudden changes in flow velocity. Turbulence, characterized by vortices and disturbances generated when fluids flow at high speeds or irregularly, leads to energy loss, pressure fluctuations, and increased impact on the pipeline wall. Linear regulation, through smooth flow velocity control, maintains the fluid state within the laminar flow range, significantly reducing the probability of turbulence.

[0075] Taking a blood pressure monitor as an example, it captures blood pressure signals by detecting pressure fluctuations caused by arterial blood flow obstruction and recovery. If the fluid regulating valve R1 cannot achieve linear adjustment, the air flow rate in the blood pressure monitor may fluctuate during deflation, leading to a sudden drop or fluctuation in cuff pressure. These fluctuations can cause pressure signal distortion and reduce measurement accuracy. Increased turbulence can also accelerate the wear of air circuit components and shorten the lifespan of the device.

[0076] By precisely controlling the fluid regulating valve R1, the blood pressure monitor can achieve a slow and uniform deflation process, ensuring stable pressure signal transmission, thereby improving measurement accuracy, patient comfort, and equipment reliability. Similar principles are also applied in medical infusion pumps and industrial flow control, highlighting the crucial role of linear regulation in avoiding turbulence.

[0077] For one possible implementation, please refer to Figure 4 , Figure 4 yes Figure 1 The fluid regulating valve R1 shown is another cross-sectional schematic diagram. The fluid regulating valve R1 also includes a porous structure 60. The porous structure 60 is filled in the second cavity 223 of the flow-blocking rod 22. The holes in the porous structure 60 are interconnected to form a fluid channel. The fluid channel is connected to both the second through hole 222 and the first through hole 221.

[0078] In this embodiment, the porous structure 60 contains numerous interlaced micropores forming fluid channels. When fluid flows through these channels, it must bypass the pore walls and repeatedly change direction. The tortuous path of the pores prolongs the actual flow distance of the fluid, while the friction of the pore walls further consumes the fluid's kinetic energy, thus increasing the overall flow resistance of the flow-blocking rod 22 and reducing the flow velocity of the fluid passing through it. This increases the resistance of the flow-blocking rod 22, allowing it to adjust the fluid pressure over a wider range, making the fluid regulating valve R1 suitable for more application scenarios.

[0079] Furthermore, turbulence is usually caused by excessively high flow velocity or abrupt changes in flow direction. The porous structure 60 disperses fluid kinetic energy, breaking large-scale vortices into smaller eddies, thus making the flow state tend towards uniform laminar flow. In addition, the guiding effect of the pores in the porous structure 60 can prevent local acceleration of the fluid, reducing the conditions for turbulence generation at its source. Turbulence is a major source of noise and vibration in pipe structures. By suppressing turbulence, the porous structure 60 can significantly reduce fluid impact noise and mechanical vibration, thereby extending the service life of the fluid regulating valve R1.

[0080] For example, the baffle rod 22 can be made of a ferromagnetic material. The baffle rod 22 can move within the first cavity 213 following the position of an external magnetic component to adjust the resistance of the fluid regulating valve R1.

[0081] For some possible implementation methods, please refer to the following: Figure 5 and Figure 6 , Figure 5 yes Figure 1 The diagram shows another cross-sectional view of the fluid regulating valve R1, in which the fluid regulating valve R1 is in the open state. Figure 6 yes Figure 5The diagram shows the structure of the fluid regulating valve R1 in the closed state. The fluid regulating valve R1 also includes a push rod 70. The push rod 70 is connected to the end of the flow-blocking rod 22 away from the outlet 212, and the push rod 70 can drive the flow-blocking rod 22 to move within the first cavity 213 under the action of external force.

[0082] Specifically, the push rod 70 includes a sealing section 71 and an operating section 72. The sealing section 71 is located inside the first cavity 213, and at least part of the operating section 72 is located outside the first cavity 213.

[0083] The sealing section 71 is connected to the end of the flow-blocking rod 22 opposite to the outlet 212. The sealing section 71 is sealed to the wall of the first cavity 213. The peripheral side of the sealing section 71 can be sealed to the wall of the first cavity 213. For example, at least one sealing ring 73 can be fitted onto the peripheral side of the sealing section 71. The sealing ring 73 can abut between the peripheral side of the sealing section 71 and the wall of the first cavity 213.

[0084] The diameter of the operating section 72 can be smaller than the diameter of the sealing section 71. One end of the operating section 72 is connected to the sealing section 71, and the other end extends out relative to the housing 21. Specifically, the housing 21 is provided with a push rod mounting hole 210, which is located opposite to the liquid outlet 212 in the longitudinal direction of the housing 21. The end of the operating section 72 away from the sealing section 71 passes through the push rod mounting hole 210 and can extend in a direction away from the first cavity 213.

[0085] In this embodiment, the push rod 70 can provide an operating position for the movement of the flow-blocking rod 22. The operator can apply external force to the push rod 70 to extend or shorten the effective length of the flow-blocking rod 22 that blocks the fluid.

[0086] When it is necessary to close the fluid regulating valve R1, the sealing section 71 of the push rod 70 can cover the liquid inlet 211. The sealing section 71 can be used to block the fluid entering the housing 21 through the liquid inlet 211 from passing through the flow control rod 22, thereby closing the fluid regulating valve R1.

[0087] For example, the wall of the push rod mounting hole 210 can be threaded to the push rod 70.

[0088] In this embodiment, the operator can rotate a portion of the push rod 70 located outside the housing 21 to rotate the thread of the push rod 70 relative to the thread of the push rod mounting hole 210, so that the push rod 70 can move in its length direction, thereby driving the flow-blocking rod 22 located inside the housing 21 to move.

[0089] In some possible implementations, the cavity wall of the first cavity 213 may also be threadedly connected to the outer peripheral surface of the flow-blocking rod 22.

[0090] In this embodiment, the cavity wall of the first cavity 213 and the outer peripheral surface of the flow-blocking rod 22 are engaged by threads. When the cavity wall of the first cavity 213 is connected to the outer peripheral surface of the flow-blocking rod 22, rotating the flow-blocking rod 22 causes the tightening torque to squeeze the tooth sides of the internal and external threads against each other, generating radial contact pressure. This pressure causes a slight elastic deformation of the flow-blocking rod 22 or the cavity wall of the first cavity 213, filling the microscopic gaps between the threads and forming an initial seal. This prevents fluid from passing between the flow-blocking rod 22 and the cavity wall of the first cavity 213, ensuring that all the fluid flows out through the first through hole 221 after passing through the flow-blocking rod 22. This prevents the fluid from splitting and then converging to form turbulence, thereby preventing turbulence from affecting the flow rate control accuracy of the fluid regulating valve R1.

[0091] For other possible implementations, please refer to the following: Figure 7 and Figure 8 , Figure 7 yes Figure 1 The diagram shows a cross-sectional view of the seal 80 of the fluid regulating valve R1 connected to the housing 21. Figure 8 yes Figure 1 The diagram shows a cross-sectional view of the fluid regulating valve R1 with its seal 80 connected to the flow-blocking rod 22. The fluid regulating valve R1 also includes a seal 80, which is clamped between the circumferential surface of the flow-blocking rod 22 and the cavity wall of the first cavity 213. The seal 80 is disposed around the outer periphery of the flow-blocking rod 22. For example, there may be multiple seals 80, spaced apart along the length of the flow-blocking rod 22.

[0092] In this embodiment, the seal 80 can fill the gap between the flow-blocking rod 22 and the cavity wall of the first cavity 213. This ensures that all the fluid flows out through the first through hole 221 after passing through the flow-blocking rod 22, preventing fluid from splitting and then converging to form turbulence.

[0093] Multiple seals 80 can form multiple sealing barriers to prevent fluid from passing through the gap between the seal 80 and the outer peripheral surface of the flow-blocking rod 22, or between the seal 80 and the cavity wall of the first cavity 213.

[0094] For details, please refer to [link / reference]. Figure 7 The seal 80 can be fixedly connected to the outer periphery of the flow-blocking rod 22.

[0095] In this embodiment, when the seal 80 is fixed to the outer periphery of the flow-blocking rod 22, and the flow-blocking rod 22 slides relative to the first cavity 213, the seal 80 only needs to rub against the cavity wall of the first cavity 213, and does not need to rub against the outer peripheral surface of the flow-blocking rod 22. Since the peripheral side of the flow-blocking rod 22 has many openings of the second through holes 222, and the peripheral side of the flow-blocking rod 22 is rougher than the inner wall of the first cavity 213, fixing the seal 80 to the outer periphery of the flow-blocking rod 22 can prevent damage to the seal 80 caused by frequent friction with the outer peripheral surface of the flow-blocking rod 22.

[0096] Alternatively, please refer to [the relevant document / reference]. Figure 8 The sealing element 80 can be fixedly connected to the cavity wall of the first cavity 213.

[0097] In applications where the seal 80 is fixed to the cavity wall of the first cavity 213, the seal 80 can be directly connected to the inside of the first cavity 213. Since the cavity wall inside the first cavity 213 can connect to the outer peripheral surface of the seal 80, compared to connecting the inner peripheral surface of the seal 80 to the flow-blocking rod 22, connecting the seal 80 to the inside of the first cavity 213 results in a larger connection area. Therefore, the connection stability between the seal 80 and the cavity wall of the first cavity 213 is stronger, preventing the seal 80 from detaching from the outer shell 21 and the flow-blocking rod 22 and losing its sealing function. Furthermore, the flow-blocking rod 22 requires a through-hole fabrication process. Therefore, connecting the seal 80 to the outer periphery of the flow-blocking rod 22 requires avoiding the through-hole location, which is more difficult and costly to manufacture. Therefore, directly installing the seal 80 inside the outer shell 21 is easier to implement, has a lower manufacturing cost, and a higher yield rate, making it suitable for applications where the flow-blocking rod 22 does not require frequent movement.

[0098] The above are exemplary embodiments of this application. It should be noted that those skilled in the art can make several improvements and modifications without departing from the principles of this application, and these improvements and modifications are also considered to be within the scope of protection of this application.

Claims

1. A fluid regulating valve, characterized in that, include: The outer casing has a liquid inlet, a liquid outlet, and a first cavity. The liquid inlet is located on the periphery of the outer casing, and the liquid outlet is located at the end of the outer casing. Both the liquid inlet and the liquid outlet are connected to the first cavity. A flow-blocking rod is provided with a first through hole, a second through hole, and a second cavity. The flow-blocking rod is located in the first cavity. The first through hole penetrates the end of the flow-blocking rod and communicates with the second cavity. The first through hole faces the liquid outlet. There are multiple second through holes, which penetrate the periphery of the flow-blocking rod and communicate with the second cavity. The multiple second through holes are arranged in an array on the periphery of the flow-blocking rod. The flow-blocking rod can move along its length in the first cavity to make the first through hole approach or move away from the liquid outlet. When the fluid regulating valve is in the open state, at least one second through hole can face the liquid inlet. Fluid can pass through the liquid inlet, the second through hole, and the second cavity in sequence, and flow into the first cavity from the first through hole, and then flow out through the liquid outlet.

2. The fluid regulating valve according to claim 1, characterized in that, The fluid regulating valve also includes a porous structure, which fills the second cavity of the flow-blocking rod. The porous structure has a fluid channel that communicates with both the second through hole and the first through hole.

3. The fluid regulating valve according to claim 2, characterized in that, The fluid regulating valve further includes a sealing element, which is clamped between the peripheral surface of the flow-blocking rod and the cavity wall of the first cavity, and the sealing element is arranged around the outer periphery of the flow-blocking rod.

4. The fluid regulating valve according to claim 3, characterized in that, The number of the sealing elements is multiple, and the multiple sealing elements are spaced apart along the length direction of the flow-blocking rod.

5. The fluid regulating valve according to claim 3 or 4, characterized in that, The sealing element is fixedly connected to the outer periphery of the flow-blocking rod, or the sealing element is fixedly connected to the cavity wall of the first cavity.

6. The fluid regulating valve according to any one of claims 1-4, characterized in that, The fluid regulating valve also includes a push rod, which passes through the housing and is connected to the end of the flow-blocking rod away from the liquid outlet. The push rod can drive the flow-blocking rod to move within the first cavity under the action of external force.

7. The fluid regulating valve according to claim 1 or 2, characterized in that, The cavity wall of the first cavity is threadedly connected to the outer peripheral surface of the flow-blocking rod.

8. The fluid regulating valve according to claim 6, characterized in that, The outer casing is provided with a push rod mounting hole, and the push rod mounting hole and the liquid outlet are arranged opposite to each other in the length direction of the outer casing; The push rod includes a sealing section and an operating section. The sealing section is connected to the end of the flow-blocking rod away from the liquid outlet. The sealing section is sealed to the cavity wall of the first cavity. One end of the operating section is connected to the sealing section, and the other end extends out relative to the push rod mounting hole.

9. The fluid regulating valve according to any one of claims 1-4, characterized in that, When the fluid regulating valve is in the closed state, the second through hole is misaligned with the liquid inlet.

10. The fluid regulating valve according to any one of claims 1-4, characterized in that, The fluid regulating valve also includes an inlet pipe, which is connected to the outer casing and covers the inlet port. The interior of the inlet pipe is in communication with the first cavity.

11. A fluid circulation system, characterized in that, It includes a fluid passage and a fluid regulating valve as described in any one of claims 1-10, wherein the fluid regulating valve is connected in the fluid passage and is capable of regulating the fluid pressure of the fluid passage.

12. A terminal, characterized in that, The body includes the fluid circulation system as described in claim 11, wherein the fluid circulation system is mounted on the body.

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