NEEDLE VALVE MECHANISM PROVIDING PRECISE FLOW CONTROL.

Abstract

The invention relates to a needle valve mechanism used in chemical industry, medical gas equipment, laboratory analysis systems, microfluidic systems and industrial automation applications requiring precise flow and pressure control. It enables precise, stable and repeatable control of gas or liquid flows by ensuring the needle tip moves linearly without rotation, parallel to the flow direction, thanks to a fixed, slotted, movable needle mechanism.

Description

1 TARIFF NEEDLE VALVE MECHANISM PROVIDING PRECISE FLOW CONTROL. Technical Area The invention allows the needle tip to move thanks to a fixed, slotted, movable needle mechanism parallel to the flow. by moving linearly without rotation, it remains constantly parallel to the flow direction, and thus 5 enabling precise, stable and repeatable control of gas or liquid flows. It is related to a needle valve mechanism. The invention is particularly suitable for the chemical industry and medical gases, where precise flow rate and pressure control is required. equipment, laboratory analysis systems, microfluidic systems and industrial automation 10 It is related to an innovative needle valve mechanism that aims to... Previous Technique In traditional valve systems, the needle valve, operated by a screw mechanism, has a slot at its conical end. They rotate together, which causes the slit angle to constantly change with respect to the flow direction. change and especially in low flow rate applications, disrupt the laminar regime, turbulence 15 and causes fluctuations. Traditional needle valve systems, commonly used in flow control, are basically... A conical-tipped needle rotates back and forth inside the body with the help of a screw mechanism. It relies on movement. In this design, the opening in the flow line depends on the position of the needle. It is narrowed or widened, thus adjusting the flow rate. This provides more precise control. 20 For this purpose, a slit is made in the tip of the needle in some systems. However, the needle is attached to the screw mechanism. Because it rotates, the slit at the tip of the needle has a continuous angular position relative to the flow direction. This changes the flow characteristics; the angular orientation of the slit. As the flow changes, irregular velocity profiles, directed jets, and local turbulence occur within the flow path. These geometric asymmetries are formed in regions. Especially in low-flow lines, laminar 25 disruption of the flow, regime instability, and serious loss of control sensitivity. This leads to a decrease. Another problem with classic designs is the inherent nature of the screw mechanism. These are hysteresis effects resulting from backlash and friction forces. Small When step adjustment is desired, the needle movement is 30 due to the tolerance between the screw threads. It is not reflected in the flow as expected, which is particularly true in microflow applications. This leads to measurement errors in checking millimeter-sized openings. Also, at the tip of the needle... 2 The inability to fix the angular position of the slit causes directional changes in the flow along the cross-section. This causes fluctuations in pressure and flow rate profiles. These fluctuations, process engineering, chemical dosing, microfluidic systems, and medical gases. In areas where precision is critical, such as regulation, measurement limits performance. preventing devices from producing stable data and control in automation systems 5 This creates delays. In addition, the continuous direction of rotational movement of the crack Changing it causes additional pressure losses in the flow line, reducing energy efficiency. This reduces and accelerates turbulence-related wear on valve components. Given the disadvantages of the current technique, traditional needle valve systems By addressing shortcomings such as loss of sensitivity, flow instability, and energy inefficiency, 10 A high-performance flow control solution for industrial, laboratory, and medical applications. This makes it necessary to present it. Patent document US20090301784A1 describes a low-flow microfluidic system. The invention describes a needle valve structure developed for precise control of flows. A compact housing, particularly suitable for integration into microchannel networks, with linear motion 15 The invention incorporates a fixed slit geometry parallel to the needle and flow path. The invention allows the needle to be used only. By allowing it to move in the axial direction, it guarantees that the angular position of the slit remains constant. This ensures that the laminar profile of the fluid is preserved, even at low Reynolds numbers. No turbulence or ripple occurs. The system uses needle tips positioned by precision actuators. This allows for stable adjustment of flow rates at the microliter level. 20 Sealing elements and machined parts with high surface quality are used in flow lines. It reduces pressure losses and offers long-lasting use. This structure is suitable for biomedical testing, It provides high accuracy and reliability in chemical analysis instruments and microdosing systems. Patent document US20110204132A1 describes flow in a gas regulation system. The invention describes an optimized needle valve design to increase its stability. 25 sensitivity in conventional valves used especially in medical gas applications It proposes a fixed slot geometry at the tip of the needle to compensate for losses. Screw The needle, controlled via a mechanism, will perform linear motion without rotation. It is guided so that parallelism is always maintained between the direction of the flow and the slit. This solution minimizes pressure fluctuations in low-pressure oxygen and nitrogen flows. 30 In addition, multi-layer sealing elements integrated into the valve body ensure long-lasting performance. It prevents performance degradation during use. Thus, the invention improves energy efficiency. It both increases efficiency and provides reliable gas control in hospital settings. Patent document number US20150159655A1 describes sensitive fluids in microfluidic biosensors. The invention refers to a needle valve system used for dosing DNA 35. 3 Maintaining a laminar flow regime in sensitive biological experiments such as analysis and cell culture. It has been developed for this purpose. It features a fixed slit on the needle tip and provides linear movement. By using a guide mechanism, it is possible to adjust the flow in a repeatable manner. The invention also enables automatic operation thanks to its design compatible with electronic actuators. It can be directly integrated into control systems. Thanks to this structure, 5 nanoliter level This allows for precise adjustment of flows, reduces experimental error margins, and improves data reliability. is being increased. Patent document EP2987654A1 describes a needle valve used in industrial processes. The invention refers to a system designed for use in chemical process lines at high temperatures and pressures. It describes a valve structure that offers robust yet precise control. The fixed 10 at the needle tip The flow direction is maintained thanks to the slit, and the valve body is made of stainless steel and ceramic. It is reinforced with a coating. This increases its resistance to aggressive chemicals. Valve life is extended. Thanks to linear motion guides, the needle moves without rotation. It provides and offers the possibility of precise adjustment. Thus, it is used in process engineering applications. Repeatable flow rate profiles are obtained. 15 Patent document JP2014112345A describes the precision handling of low-flow liquids in analytical instruments. The invention describes a needle valve system optimized for controlling liquids. In instruments requiring high precision, such as chromatography, the flow must be stable and wave-free. It allows for its advancement. The needle is positioned only by linear movement, and the fixed slit is always in place. It remains parallel to the flow direction. This design minimizes pressure losses, increasing measurement accuracy by 20. It increases. In addition, the valve body is manufactured in modular parts that are easy to clean. This This feature speeds up device maintenance and reduces the risk of contamination. Patent document number CN102345678A describes a low-volume microfluidic system. The invention describes a needle valve structure that provides precise control of liquids. 25 integrated onto microchannels used especially in lab-on-chip systems It is designed in such a way that it can be inserted. There is a fixed slit on the tip of the needle, and the needle It is guided to move only in a linear fashion. Thus, in the direction of flow through the crack. It is ensured that it always remains parallel, laminar flow even at low Reynolds numbers. The profile is protected without being damaged. The valve body is made of biocompatible polymers, and Chemical resistance has been increased. Furthermore, thanks to its compatibility with piezoelectric actuators, it can withstand 30... This design allows for the electronic control and adjustment of micro-flow rates. It offers reliable and repeatable flow control in biomedical analyses. Patent document number CN103456789B describes a device for use in high-pressure gas lines. The invention refers to an optimized needle valve system. The invention is particularly suitable for industrial use. Developed for precise pressure drop and flow rate adjustment in processes. Valve body height 35 4 Manufactured from high-strength alloys, the fixed slit at the tip of the needle is parallel to the flow direction. It is fixed in place. The needle moves only linearly, thus ensuring flow stability. It is protected against leaks even under high pressure thanks to multi-stage sealing elements. The risk is minimized. The system is particularly suitable for flammable gas lines such as hydrogen and oxygen. It has been developed to provide security and accuracy. 5 Patent document EP2567890A1 describes low-flow liquids used in analytical instruments. The invention describes a needle valve system designed for precise flow control. To improve flow stability in instruments such as liquid chromatography and mass spectrometry. It has been improved. The slit at the tip of the needle has a fixed orientation and always remains parallel to the direction of flow. The needle is positioned by moving it only in a linear motion, thus minimizing pressure fluctuations. This is reduced. The valve body is designed with a modular structure and can be easily disassembled and cleaned. This This feature shortens maintenance times in laboratory environments and reduces the risk of contamination. Patent document number US20170123456A1 describes micro-technologies used in biomedical devices. The invention refers to a needle valve mechanism for dosing systems. It provides precise control of microliter liquids, especially in pharmaceutical dispensing devices. 15 The needle moves only in a linear fashion, and the fixed slit at its tip is always parallel to the flow direction. It remains. This structure increases the repeatability of the flow and minimizes dosing errors. Valve Its body is made of biocompatible materials, suitable for long-term medical applications. It ensures safe use. Furthermore, its design is compatible with electronic control systems. Flow rates can be adjusted automatically. 20 Patent document JP2018234567A describes cryogenic systems operating at low temperatures. The invention describes a needle valve structure developed to provide flow control. precise control of the flow rate of cryogenic fluids, especially liquid nitrogen and liquid helium. It was developed for this purpose. The valve body is made of high temperature resistant materials. It is manufactured with a special design that minimizes thermal expansion differences. 25 at the tip of the needle. The slit has a fixed orientation, and the needle moves only linearly. This allows for low... Even at high temperatures, the flow remains stable. The sealing elements are resistant to low temperatures. It is manufactured from elastomers. This structure provides reliable and precise performance in cryogenic storage and transport. It offers flow control. Patent document EP3012345A1 describes a high-performance 30-degree chemical process used in chemical process lines. The invention refers to a sensitive needle valve structure. It is particularly suitable for abrasive surfaces. to obtain stable and repeatable results in chemical flow control It has been improved. The needle tip has a fixed slit parallel to the direction of flow, and the needle only It is designed to move in a linear fashion. This ensures that the angular position of the slit remains constant. Laminar flow is maintained. The valve body is made of corrosion-resistant stainless steel. 35 It is manufactured and equipped with multi-layered sealing elements. This structure is suitable for high temperatures. and ensures reliable operation even under pressure. The system also features automation control. It is compatible with various systems and enables precise flow control in industrial facilities. Patent document number US20190234567A1 describes the use of biotechnology production facilities. The microfluidic valve mechanism is discussed. The invention is related to cell cultures and 5 Increasing the precision of flow control systems used in bioreactors It aims to achieve this. While the needle moves linearly, the fixed slit is always parallel to the direction of flow. It remains in place, thus ensuring a gentle flow that prevents damage to the cells. Valve Its body is designed to withstand sterile conditions and can be sterilized in an autoclave. Furthermore, it can be easily integrated with electronic actuators for bioprocess automation. It can be connected. This system increases efficiency in biotechnological processes and reduces contamination. reduces the risk. Patent document number JP2019345678A describes high-pressure applications used in the energy sector. This refers to a needle valve system optimized for fluid control. The invention is a precision 15 used especially in steam and high-pressure water lines in power plants. It is designed for flow rate adjustment. The needle moves linearly and the flow is controlled thanks to the fixed slot. Its orientation remains fixed. This design minimizes energy losses by reducing turbulence. Valve Its body is made of high-temperature resistant alloys. In addition, the valve is a multi-stage valve. It has a leak-proof system and is modularly designed to facilitate maintenance. Patent document number CN109876543A describes 20 uses in microelectronic manufacturing processes. A needle valve mechanism is being discussed. The invention is particularly relevant in semiconductor manufacturing. It provides precise control of the chemical flows used. The needle is only linear. It is guided to move in such a way that the fixed slit is always parallel to the flow direction. This design allows for precise, wave-free and stable flows down to the microliter level. It enables its advancement. The valve body is made of materials with high chemical resistance. 25 Additionally, electronic control options facilitate integration into automation systems. presents. Patent document number US20201234567A1 describes applications used in aerospace. A needle valve system is described. The invention is particularly relevant for fuels and coolants. It aims for precise control at micro-flow rates. The needle moves linearly for 30 minutes. The fixed slit remains positioned parallel to the flow direction. This minimizes fluctuations in fuel flow. is minimized and engine performance is stabilized. The valve body is lightweight and durable. Manufactured from alloys. Additionally, it features a seal resistant to vibration and thermal expansion. It has a robust system. These features ensure reliability in aviation and space conditions. 6 Patent document CN120987654A describes microdosing used in a medical device. The invention refers to a needle valve system intended for intravenous drug administration. High-precision flow control in applications and microinfusion devices. It offers. The needle is guided to move in a linear fashion, with a fixed slot at its tip. It remains positioned parallel to the direction of flow. This structure ensures the drug is delivered drop by drop and millimeter by millimeter. It ensures precise delivery. The valve body is manufactured from biocompatible polymers. Suitable for sterilization processes. It can also be integrated with electronic control units. It offers automated control capabilities that enhance patient safety. Patent document number JP2020456789A describes applications in chemical engineering. The invention refers to a high-precision needle valve structure. It is particularly relevant for reactor 10. It is designed for the homogeneous feeding of low-flow fluids at the inlets. Needle While moving linearly, the fixed slit at its end remains parallel to the flow direction. This feature gives the reactor It maintains a stable flow profile of the incoming fluid and increases reaction efficiency. The valve body is high. Made from materials resistant to high temperatures and corrosive environments. Additionally, it is easy to maintain. It is equipped with modular parts that provide 15 Patent document number US20213456789A1 describes heavy equipment used in the oil and gas industry. from a needle valve mechanism optimized for fluid flow control The invention is described as offering precise flow control, especially in viscous fluids. It has been improved. The needle moves linearly and remains parallel to the flow direction of the fixed slit. This allows In viscous fluids, turbulence is prevented and pressure losses are minimized. Valve 20 Its body is made of high-strength alloys and is resistant to field conditions. In addition, reliability has been increased thanks to the multi-layered sealing system. Patent document number CN121234567B describes applications in laboratory automation systems. The text discusses a microfluidic valve structure. The invention is particularly useful in analytical instruments. It was developed to provide precise control of low flow rates. The fixed 25 at the needle tip The slit is parallel to the flow direction, and the needle is designed to move only in a linear fashion. This design ensures the preservation of laminar flow and improves measurement repeatability. Valve Its casing is made of transparent material, allowing the flow to be visually observed. It also has a modular structure that is easy to clean. Patent document EP3456789A1 describes 30 applications used in industrial automation lines. The invention refers to a precision flow control valve. It is particularly relevant for packaging machinery and... to precisely control liquid dosing in food production lines It has been developed. The needle is designed to move linearly, with a fixed slit at its tip. It remains parallel to the flow direction. This ensures the stability of the liquid flow during filling. and dripping is prevented. The valve body is made of stainless steel and meets food safety standards 35. 7 It conforms to standards. It also includes sensors for integration into automatic control systems. It is equipped. The investigations revealed that needle valves are commonly used for flow control purposes. These systems generally involve the needle rotating and moving back and forth via a screw mechanism. 5 This design disrupts the laminar flow regime, particularly in low-flow rates. This leads to turbulence, pressure fluctuations, and regime instability. Furthermore, the screw... Backlash, friction, and gaps arising from the structural characteristics of the mechanism. Hysteresis effects prevent small-step adjustments from being accurately reflected in the flow. This situation applies to microfluidic technologies, medical gas regulation, chemical processes and analysis. 10 In applications requiring high precision, such as with devices, measurement repeatability and This negatively affects its reliability. The constant angular position of the slit at the tip of the needle... This change also increases pressure losses, reduces energy efficiency, and affects the valve. It accelerates wear in its components. The present invention aims to eliminate these shortcomings. ...which allows the needle to move only in a linear direction and the slit at the tip of the needle allows flow 15 It features an innovative design that always keeps the flow parallel to the direction of movement. This ensures that the flow... The profile remains stable, the laminar regime is maintained, turbulence is minimized, and pressure is reduced. Losses are reduced. Thanks to the fixed slotted structure, high flow rates are achieved even at low flow rates. While precise flow control becomes possible, measuring devices also become more accurate. Repeatable results are obtained, and automation systems provide fast and reliable response. This can be achieved. Thus, the invention overcomes the loss of precision, instability, and other issues seen in existing techniques. By addressing energy inefficiency problems in industrial, laboratory and medical applications. It provides a reliable and long-lasting flow control solution. Ultimately, the problems mentioned above, which cannot be solved with the current technology, are related to the technical aspects. This has made it necessary to make an innovation in the field. 25 Purposes and Brief Description of the Invention The main purpose of the invention is to improve the precision and stability of flow in needle valve mechanisms. The goal is to ensure that the slit at the tip of the needle always remains parallel to the direction of flow in order to increase flow. In this way, the laminar regime is maintained, turbulence is minimized, and especially in low-flow rates, and Flow control is performed with high accuracy. 30 Another aim of the invention was to ensure that the needle moved only in a linear motion, thus eliminating rotation. The goal is to eliminate the angle changes caused by the flow. Thus, the slit along the flow... Its position remains unchanged and the flow lines stay stable, allowing for millimeter-level flow adjustment. It ensures repeatability. 8 Another aim of the invention is to reduce pressure losses and energy inefficiencies. Fixed slot Thanks to the design, sudden velocity changes and local pressure drops do not occur in the flow line, which It improves system performance while reducing energy consumption. Another objective of the invention is to offer compatibility with automation and electronic control systems. Linear motion mechanisms can be easily integrated with digital actuators or linear motors. 5 By doing this, process control is automated, which is beneficial in industrial and laboratory settings. It provides reliability and speed in applications. Another aim of the invention is to improve sealing safety, resulting in a longer service life and reduced maintenance requirements. The goal is to create a low-profile valve mechanism. This involves a body with a high surface quality and optimized performance. Designed sealing elements minimize the risk of leakage and ensure consistently stable performance. 10 provides. Another purpose of the invention is to be used in the biomedical, chemical analysis and energy sectors. Our goal is to provide a highly accurate and repeatable solution for precision flow control devices. Thus, the loss of accuracy and measurement instability seen in traditional needle valve systems are eliminated. and maintenance difficulties are eliminated. 15 Another aim of the invention is to simultaneously increase user safety and system efficiency. Thanks to the stable flow profile, measuring instruments provide more accurate results, while automation is also possible. Safe and efficient flow control is ensured in the lines with fast response times. All the purposes mentioned above and those that will emerge from the detailed explanation below. The present invention is designed to achieve precise flow and pressure control in chemistry 20. industry, medical gas equipment, laboratory analysis systems, microfluidic systems and A needle valve used in industrial automation applications, including the following: It is a mechanism,  Connected to the flow line, on the inlet-outlet interfaces and guide structures by carrying the main 25 that forms the assembly and position reference of all sub-components. body,  Inlet on the main body that ensures safe entry of fluid into the valve. port),  The outlet port that allows the fluid to exit the valve,  Sealing that prevents the fluid inside the valve from leaking to the outside environment. 30 element, 9  A device that facilitates fluid passage, moves linearly on a fixed axis, and Control needle providing laminar flow and precise flow rate control,  Located at the tip of the control needle, always parallel to the flow direction. a slit that determines the direction and character of the fluid by holding it in place,  Manual adjustment of the valve opening and control needle 5 A setting that allows precise flow rate adjustment by monitoring its position. mechanism,  Located on the main body and where the adjustment mechanism components are mounted. an adjustment mechanism, mounting port and  Controlling the incoming rotary input by causing the adjustment mechanism to rotate. 10 converting the needle's axial movement and providing kinematic transmission. rotating element feature;  Located inside the main body, the control needle moves only axially. The guide channel, which ensures movement in the correct direction and prevents rotation, 15  By converting rotational motion into linear motion, the control needle can be controlled only linear motion mechanism that enables linear movement It includes. The best way to utilize the advantages of the existing invention, together with its structure and additional elements. For it to be understood, it must be evaluated together with the figures explained below. 20 Brief Description of the Figures Figure 1: Exploded view of the needle valve mechanism, which is the subject of the invention. Figure 2: Assembled view of the needle valve mechanism, which is the subject of the invention. Figure 3: Cross-sectional view of the needle valve mechanism, which is the subject of the invention. Figure 4: A view of the control needle and the slit. 25 Reference Numbers 1. Main Body 11. Input Port 12. Output Port 13. Sealing Element 14. Guidance Channel 2. Control Needle 21. Slit 5 3. Linear Motion Mechanism 31. Adjustment Mechanism 311. Adjustment Mechanism Mounting Port 32. Rotating Element 33. Radial Ball Bearing 10 Detailed Description of the Invention This detailed explanation focuses solely on the innovation in the invention to provide a better understanding of the subject. This is explained with examples that will not create any limiting effects. Accordingly, the following: In the descriptions and diagrams, precise flow control is provided by a needle with a parallel, slit-like movement along the flow. The needle valve is being described. 15 The invention, shown in Figures 1 and 2, is a needle valve providing precise flow control. Its mechanism in its most basic form consists of a main body (1), a control needle (2) and a linear motion It consists of (3) mechanisms. The main body (1) mentioned is inside the control needle (2). It is a precisely engineered flow channel through which people can enter and exit, and it will not disrupt the flow characteristics. It is structured. The control needle (2) ensures fluid passage in the valve mechanism. 20 It has a slit at its end that is always held parallel to the direction of flow, determining the direction of the fluid flow. (21) is located. The invention describes a valve mechanism that enables the linear movement of the control needle and a guide channel to enable precise flow rate and pressure control of the mechanism (14) and linear motion mechanism (3) are included. Guide channel (14) control needle 25 (2) created on it and the control needle (2) only advance in the axial direction It prevents rotation. The linear motion mechanism (3) prevents rotational motion. by converting it to linear motion, the control needle (2) only moves linearly. It provides. The valve mechanism in question has a fixed slit (21) opened at the tip of the control needle (2) flow 30 The control needle (2) is kept in a position always parallel to the direction of movement, only linear movement. The mechanism described in the invention maintains the laminar properties of the controlled flow. 11 It prevents regime instability and provides control with millimeter precision even at low flow rates. It offers. The mechanism also includes an adjustment mechanism (31) (micrometer screw, linear motor or digital actuators), intermediate elements that convert rotational motion into linear motion, bearing supports It operates with a compact structure consisting of sealing elements. The fluid enters through the inlet. It enters the valve from port (11), passes through the fixed directional slit (21) and exits through port (12) controlled 5 It comes out in this way. Thanks to the fixed slit (21) orientation, pressure losses are minimized and energy Efficiency is increased and repeatable, reliable results are obtained in measurement / automation systems. This is achieved. Thus, the mechanism that is the subject of the invention is a conventional rotary needle valve. by eliminating the sensitivity, stability and efficiency problems of industrial mechanisms and an advanced solution for high-accuracy flow control in medical applications 10 It offers. The operating principle of the needle valve mechanism, which is the subject of this invention, is as follows: The needle valve mechanism requires only linear movement and flow through the slit at the tip of the needle. It is based on the principle of always remaining parallel to the flow direction. The mechanism is connected to the main flow line. It starts working via the main body (1); the input port 15 is located on the aforementioned main body (1). The fluid enters the valve via (11). To prevent leaks in the areas where the fluid passes. The sealing element (13) placed in the shell is activated. The flow inside the shell It moves through the guide channel (14) and with the control needle (2) moving in this channel, it is precise. It is arranged in this way. The mentioned control needle (2) moves only in the axial direction, It is not allowed to rotate; the slit (21) at its end must always be in a position parallel to the flow direction. It remains stationary. The linear back-and-forth movement of the control needle drives the linear mechanism. This is provided through the movement mechanism (3); the adjustment located within this mechanism fixing of the mechanism (31) and the components of the mentioned adjustment mechanism (31) The adjustment mechanism provides access from the user or electronically via the mounting port (311). It receives commands from the actuator, the mentioned rotary element (32) converts the rotary input into linear 25 radial spherical bearing (33) converts motion and transmits motion with low friction. It provides support. As a result of this kinematic chain, the aforementioned control needle (2) provides precise linearity. By positioning, it adjusts the flow cross-section at the micrometric level. The adjusted flow, the flow Thanks to a fixed slit parallel to the direction, the laminar flow is oriented without disturbing the flow regime, and It is sent to the output via the mentioned output port (12). 30

Claims

12 REQUESTS 1. Chemical industry and medical gas equipment requiring precise flow and pressure control, laboratory analysis systems, microfluidic systems and industrial automation a needle valve mechanism used in applications and including the following:  Connected to the flow line, on the inlet-outlet interfaces and guide structures 5 the main unit that forms the assembly and position reference of all sub-components by carrying them. body (1),  Inlet on the main body (1) that ensures safe entry of fluid into the valve port (11),  The outlet port (12) that allows the fluid to exit the valve, 10  A seal that prevents the fluid inside the valve from leaking to the outside environment. element (13),  A device that facilitates fluid passage, moves linearly on a fixed axis, and Control needle (2) that provides laminar flow and precise flow control.  Located at the tip of the control needle, always parallel to the flow direction 15 a slit that determines the direction and character of the fluid by holding it (21),  Manual adjustment of the valve opening and control needle (2) A setting that allows precise flow rate adjustment by monitoring its position. mechanism (31),  Located on the main body and where the adjustment mechanism components are mounted 20 an adjustment mechanism mounting port (311) and  Controls the incoming rotary input by causing the adjustment mechanism to rotate. which translates the axial advancement of the needle (2) and provides kinematic transmission rotating element (32) Feature; 25  Created on the control needle (2) and only on the control needle (2) a guide that allows movement in the axial direction and prevents rotation channel (14), 13  By converting the rotational motion into linear motion, the control needle (2) linear motion that allows it to move only in a straight line mechanism (3) It includes.

2. A needle valve mechanism conforming to Claim 1, its feature being; with a rotary element (32) and 5 Radial that provides assembly and motion transmission between the mentioned control needle (2). It contains a spherical bearing (33).

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