Axial-flow type intelligent adjusting stop valve

Abstract

The invention belongs to the technical field of valves, and particularly relates to an axial flow type intelligent adjusting stop valve which solves the problems that an existing stop valve is inaccurate in flow control, poor in high-pressure sealing performance, large in fluid impact and lack of pressure monitoring. The control structure defines the moving distance of the valve element so as to control the flow, the detection structure monitors the pressure in the first valve body in real time, the situation that the valve body is damaged due to too large pressure is avoided, the spiral groove is formed in the outer wall of the conical cover, fluid flows spirally, impact is reduced, and the sealing reliability is improved. The device has a pressure monitoring function and is suitable for complex working conditions.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of valves, in particular to an axial flow type intelligent regulating stop valve. BACKGROUND

[0002] In the field of fluid control, stop valves are widely used in various industrial pipeline systems as key equipment. The axial flow type stop valve has the problem of insufficient operation stability in pipeline control. The traditional valve is prone to damage under the action of high-pressure fluid due to sudden pressure increase, and lacks a timely pressure feedback mechanism. The flow regulating process relies on experience for judgment, and the corresponding relationship between opening degree and flow cannot be intuitively displayed. During the opening and closing process, the fluid directly collides with the valve body, causing vibration and noise, affecting the sealing reliability. The deposition of particulate matter increases the flow resistance and accelerates the wear of components. The existing structure cannot simultaneously solve the problems of pressure protection, precise flow control and operation stability.

[0003] Therefore, an axial flow type intelligent regulating stop valve is developed to solve the above problems. SUMMARY

[0004] The application aims to solve the problems of the existing valve, such as damage under the action of high-pressure fluid, inability to intuitively display the corresponding relationship between opening degree and flow, vibration and noise of the valve body affecting the sealing reliability, and deposition of particulate matter increasing the flow resistance and accelerating the wear of components, and proposes an axial flow type intelligent regulating stop valve.

[0005] In order to achieve the above purpose, the application adopts the following technical scheme:

[0006] An axial flow type intelligent regulating stop valve comprises a base, a first valve body and a second valve body connected by a connecting flange and bolts; a hollow ring is fixed in the first valve body, a valve core is arranged in the second valve body, and the hollow ring and the valve core cooperate to control the on-off of fluid; a driving structure comprises a screw rod penetrating through the second valve body and a push shaft arranged in the first valve body; a first bevel gear is rotatably arranged at the top of the second valve body, a nut block is fixed in the first bevel gear, and the first bevel gear is threadedly connected with the screw rod; a second bevel gear at the output end of a driving motor engages the first bevel gear; a strip-shaped slot is formed at the top of the push shaft, a bending plate is hingedly connected to one end of the strip-shaped slot, and the other end of the bending plate is hingedly connected to the screw rod;

[0007] A control structure comprises a liquid discharge annular groove on the side of the hollow ring close to the valve core, and a plurality of liquid discharge holes; a frame is fixed to the top of the second valve body, and mark plates are arranged on the top of the frame; a moving seat is slidably arranged in the frame, and an indicating mark is arranged at the top of the moving seat; a first magnet is embedded at the top of the sliding seat, and a second magnet is embedded at the bottom of the moving seat;

[0008] Among them, the driving motor drives the screw to rise and fall through the bevel gear pair, and drives the driving shaft to move axially through the bending plate, so that the valve core gradually opens the drainage hole, and the fluid enters the second valve body through the drainage hole and the drainage annular groove; at the same time, the driving shaft is linked to the magnetic attraction of the sliding seat and the moving seat, so that the indicator mark moves relative to the mark plate to indicate the flow rate.

[0009] In one possible design, a circular groove is formed on one side of the valve core close to the hollow ring, a yield plate is slidably connected in the circular groove, the yield plate is connected to multiple springs through a first spring seat, the other end of the spring is connected to the circular ring through a second spring seat, and multiple pressure sensors are embedded in the side wall of the circular ring;

[0010] When the valve core is closed, the fluid pressure pushes the give way plate to compress the spring, and the pressure sensor detects the fluid pressure through the ring.

[0011] In a possible design, the hollow ring is provided with an annular groove near the valve core side, a rubber ring is fixed at a corresponding position of the valve core, and the rubber ring and the annular groove are interference fit to form a sealing pair.

[0012] In a possible design, a closed ring is fixed to the outer wall of the second valve body, the end of the first valve body is inserted into the closed ring to form an external seal, and the hollow ring extends into the second valve body to form an internal seal.

[0013] In a possible design, the driving shaft slides through the connecting frame in the hollow ring. The connecting frame is a guide sleeve structure, and its inner wall is in clearance fit with the driving shaft.

[0014] In one possible design, a connecting column is fixed to the inner wall of the top of the second valve body, a conical cover is fixed to the bottom end of the connecting column, the bottom end of the screw extends into the conical cover, pushing the shaft end seal to slide through the closing plate in the conical cover, and the bending plate is located in the sealing cavity formed by the conical cover and the closing plate.

[0015] In one possible design, a plurality of spiral grooves are provided on the outer wall of the conical cover, and the fluid flows through the spiral grooves to form a swirl to reduce the turbulence intensity. The spiral angle of the spiral grooves is 15°-30°, and the groove depth is 1 / 5-1 / 3 of the tube wall thickness.

[0016] In a possible design, a fixing ring is fixedly sleeved on the outer wall of the valve core.

[0017] In a possible design, a vertical plate is fixed to the bottom of the sliding seat, and the vertical plate is connected to the end of the pushing shaft through a fixed rod, and the fixed rod seal passes through the side wall of the conical cover.

[0018] Beneficial effects: In the present invention, a give-way plate is slidably connected in the circular groove, and a plurality of springs are fixed to the side of the give-way plate away from the hollow ring through a spring seat, and one end of the plurality of springs is fixed to the same circular ring through the spring seat, and a plurality of pressure sensors are fixed to one side of the circular ring, and the plurality of pressure sensors are all fixed to the inner wall of one side of the circular groove; the valve core closes the hollow ring and the drainage hole to block the flow of fluid, and the fluid in the first valve body pushes the give-way plate to move under the action of pressure, and the give-way plate applies pressure to the circular ring under the action of the spring, and the pressure sensor can detect the pressure applied by the water flow on the valve core, calculate the pressure in the first valve body, and promptly drive the valve core to release the seal of the hollow ring and the drainage hole, so as to avoid cracks in the first valve body caused by excessive pressure;

[0019] In the present invention, marking plates are fixed on both sides of the top of the frame body, a movable seat is slidably connected to the frame body, indicator marks are fixed on both sides of the top of the movable seat, a second magnet is fixedly embedded in the bottom of the movable seat, a first magnet is fixedly embedded in the top of the sliding seat, a vertical plate is fixed to the bottom of the sliding seat, a fixing rod is fixed to one side of the vertical plate, and the fixing rod is fixedly connected to an end of the pushing shaft away from the first valve body; when the pushing shaft drives the valve core to move to release the seal between the first valve body and the second valve body, the magnetic attraction between the first magnet and the second magnet drives the movable seat to move synchronously, so that the distance moved by the valve core can be clearly determined, thereby determining the size of the flow rate when the first valve body and the second valve body are connected;

[0020] In the present invention, a clearance groove and a drainage annular groove are provided on one side of the hollow ring, and the clearance groove and the drainage annular groove are connected through a plurality of drainage holes. When the driving shaft drives the valve core to move, the valve core first releases the blockage of the drainage holes at the corresponding position. At this time, the fluid flows into the second valve body through the drainage holes and the drainage annular groove, and then the size of the fluid flow can be controlled by controlling the blockage of the plurality of drainage holes. When the driving shaft moves, the vertical plate drives the sliding seat and the first magnet to move, and the magnetic attraction between the first magnet and the second magnet drives the moving seat to move. The cooperation between the indicator mark and the marking plate can reflect the distance the valve core moves, thereby clarifying the size of the flow of the fluid entering the second valve body.

[0021] In the present invention, the outer wall of the conical cover is provided with a plurality of spiral grooves, which are used to make the fluid flowing through the outer wall of the conical cover flow in a spiral manner, reduce the direct impact of the fluid on the second valve body, make the valve opening and closing process smoother, reduce noise and vibration, and improve sealing reliability. The guiding effect of the spiral groove can prevent particulate matter from being deposited on the inner wall of the pipe, reduce the fluid flow resistance, reduce the turbulence intensity, and make the flow more stable.

[0022] In the present invention, measures such as improving sealing performance, achieving precise flow control, setting pressure detection and protection functions, and optimizing fluid flow characteristics have effectively solved the shortcomings of traditional stop valves in terms of adjustment accuracy, degree of automation, sealing performance, etc. The stop valve has the effects of high-precision flow control, high degree of automation, excellent sealing performance, pressure detection and protection, and optimization of fluid flow characteristics. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a three-dimensional structural diagram of an axial flow intelligent regulating stop valve provided by the present invention;

[0024] Figure 2 This is a schematic diagram of a three-dimensional exploded cross-section structure of an axial flow intelligent regulating stop valve provided by the present invention;

[0025] Figure 3 This is a schematic cross-sectional view of an axial flow intelligent regulating stop valve provided by the present invention;

[0026] Figure 4 This is a three-dimensional cross-sectional structural diagram of a hollow ring, a valve core and a yield plate of an axial flow intelligent regulating stop valve provided by the present invention;

[0027] Figure 5 This is a schematic cross-sectional view of the hollow ring and valve core of an axial flow intelligent regulating stop valve provided by the present invention;

[0028] Figure 6 This is a three-dimensional cross-sectional structural diagram of a closing plate and a conical cover of an axial flow intelligent regulating stop valve provided by the present invention;

[0029] Figure 7 This is a schematic diagram of a three-dimensional exploded structure of a driving shaft, a bending plate and a screw of an axial flow intelligent regulating stop valve provided by the present invention;

[0030] Figure 8 This is a schematic diagram of the three-dimensional exploded structure of the sliding seat and frame of an axial flow intelligent regulating stop valve provided by the present invention;

[0031] Figure 9 This is a schematic diagram of the three-dimensional structure of the conical cover and spiral groove of an axial flow intelligent regulating stop valve provided by the present invention.

[0032] Figure: 1, first valve body; 2, second valve body; 3, connecting flange; 4, bolt; 5, closing ring; 6, hollow ring; 7, driving shaft; 8, valve core; 9, connecting frame; 10, circular groove; 11, clearance plate; 12, spring; 13, circular ring; 14, pressure sensor; 15, clearance groove; 16, annular groove; 17, rubber ring; 18, drainage annular groove; 19, drainage hole; 20, fixing ring; 21, connecting column ; 22. Conical cover; 23. Closing plate; 24. Strip groove; 25. Bending plate; 26. Screw; 27. First bevel gear; 28. Guide rod; 29. ​​Drive motor; 30. Second bevel gear; 31. Box; 32. Spiral groove; 33. Fixed rod; 34. Vertical plate; 35. Sliding seat; 36. First magnet; 37. Frame; 38. Marking plate; 39. Moving seat; 40. Indicator; 41. Second magnet. DETAILED DESCRIPTION

[0033] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0034] In one embodiment: refer to Figure 1-Figure 3 The stop valve relates to the field of valve technology. The stop valve mainly includes a first valve body 1 and a second valve body 2 at the base. The outer walls of the first valve body 1 and the second valve body 2 are fixedly sleeved with a connecting flange 3. The two connecting flanges 3 are fixedly connected by multiple bolts 4 for connecting the first valve body 1 and the second valve body 2. This connection method is simple and reliable, and is easy to install and disassemble.

[0035] Reference Figure 2-Figure 4 A hollow ring 6 is fixed within the first valve body 1, and a valve core 8 is slidably mounted within the second valve body 2. The hollow ring 6 and valve core 8 cooperate to control the connection and sealing between the first valve body 1 and the second valve body 2. When the valve core 8 moves to tightly fit the hollow ring 6, the fluid passage between the first valve body 1 and the second valve body 2 is closed; when the valve core 8 moves to separate from the hollow ring 6, the fluid passage is opened, allowing fluid to flow between the first valve body 1 and the second valve body 2.

[0036] Reference Figure 3 、 Figure 4 、 Figure 6 and Figure 7In order to control the movement of the valve core 8, a driving structure is provided in the second valve body 2. The driving structure includes a push shaft 7 arranged in the first valve body 1 and a screw 26 that slides through the second valve body 2. Specifically, the driving structure also includes a first bevel gear 27 that rotates on the top of the second valve body 2, a nut block is fixed in the first bevel gear 27, and the top thread of the screw 26 passes through the nut block. A driving motor 29 is fixed to the top of the second valve body 2 through a frame, and the output shaft of the driving motor 29 is fixed with a second bevel gear 30 that meshes with the first bevel gear 27. When the driving motor 29 is working, its output shaft drives the second bevel gear 30 to rotate, and the second bevel gear 30 meshes with the first bevel gear 27, thereby driving the first bevel gear 27 to rotate. Since a nut block is fixed in the first bevel gear 27 and the top thread of the screw 26 passes through the nut block, the rotation of the first bevel gear 27 will drive the screw 26 to rise and fall. The top of the drive shaft 7 is provided with a strip groove 24, into which a bent plate 25 is rotatably connected. One end of the bent plate 25 is rotatably connected to a screw 26. When the screw 26 is raised or lowered, the bent plate 25 rotates around its pivotal connection point with the strip groove 24, driving the drive shaft 7 to move. The valve core 8 is fixedly sleeved on the outer wall of the drive shaft 7, so movement of the drive shaft 7 also drives the valve core 8. To ensure the stability of the movement of the drive shaft 7, a connecting bracket 9 is fixed within the hollow ring 6, and one end of the drive shaft 7 slides through the connecting bracket 9.

[0037] Reference Figure 2 、 Figure 3 、 Figure 7 and Figure 8In addition to the drive structure, a control structure is also provided to determine the flow rate of fluid entering the second valve body 2 during the movement of the valve core 8. The control structure includes a frame 37 fixed to the top of the second valve body 2 and a sliding seat 35 sliding on the inner wall of the top of the second valve body 2. Specifically, the control structure includes two marking plates 38 fixed on both sides of the top of the frame 37. A moving seat 39 is slidably connected inside the frame 37. Indicators 40 are fixed on both sides of the top of the moving seat 39, and the indicators 40 cooperate with the marking plates 38. When the moving seat 39 moves, the indicators 40 will move on the marking plates 38, thereby indicating the movement distance of the moving seat 39. A second magnet 41 is fixedly embedded at the bottom of the moving seat 39, and a first magnet 36 is fixedly embedded at the top of the sliding seat 35. A magnetic attraction is generated between the first magnet 36 and the second magnet 41. When the sliding seat 35 moves, it will drive the moving seat 39 to move synchronously. A vertical plate 34 is fixed to the bottom of the sliding seat 35. A fixed rod 33 is fixed to one side of the vertical plate 34. The fixed rod 33 is fixedly connected to the end of the driving shaft 7 away from the first valve body 1. Therefore, when the driving shaft 7 moves, it drives the fixed rod 33, vertical plate 34, and sliding seat 35, and in turn drives the moving seat 39. The indicator mark 40 cooperates with the marking plate 38 to clearly indicate the distance the valve core 8 has moved, and thus the flow rate when the first valve body 1 and the second valve body 2 are connected.

[0038] Reference Figure 4 and Figure 5 To further optimize the flow control effect, this patent provides a clearance groove 15 on the side of the hollow ring 6 close to the valve core 8. The clearance groove 15 cooperates with the valve core 8 to close the hollow ring 6. At the same time, a drainage annular groove 18 is provided on the side of the hollow ring 6 close to the valve core 8. The clearance groove 15 and the drainage annular groove 18 are connected by multiple drainage holes 19. When the valve core 8 moves, the drainage holes 19 at the corresponding position will be released first. At this time, the fluid flows into the second valve body 2 through the drainage holes 19 and the drainage annular groove 18. By controlling the degree of closure of the multiple drainage holes 19, the size of the fluid flow can be precisely controlled.

[0039] Reference Figure 4 and Figure 5To detect the water pressure within the first valve body 1, this patent also provides a detection structure. This detection structure includes a circular groove 10 disposed on the side of the valve core 8 near the hollow ring 6, with a relief plate 11 slidably connected within the circular groove 10. The radius of the relief plate 11 is smaller than the radius of the center hole of the hollow ring 6, so that the fluid can exert pressure on the relief plate 11. Multiple springs 12 are fixed to the side of the relief plate 11 away from the hollow ring 6 via a spring seat, and one end of each of the multiple springs 12 is fixed to the same circular ring 13 via the spring seat. Multiple pressure sensors 14 are fixed to one side of the circular ring 13, each of which is fixedly embedded in the inner wall of one side of the circular groove 10. When the fluid within the first valve body 1 pushes the relief plate 11 to move under pressure, the relief plate 11 exerts pressure on the circular ring 13 under the action of the spring 12. The pressure sensor 14 can detect the pressure exerted by the water flow on the valve core 8 and promptly transmit the signal to the control system. The control system can timely drive the valve core 8 to release the sealing of the hollow ring 6 and the drainage hole 19 according to the detected pressure value, so as to avoid cracks in the first valve body 1 caused by excessive pressure.

[0040] In this embodiment, the spring 12 is made of stainless steel, and its parameters range from 0.5-1.5 mm in diameter, 5-15 mm in outer diameter, 20-50 mm in free length, and 5-20 N / mm in stiffness. These parameters can be adjusted according to actual working conditions to meet different pressure detection requirements.

[0041] Reference Figure 4 To improve sealing performance, this patent provides an annular groove 16 on the side of the hollow ring 6 close to the valve core 8. A rubber ring 17 is fixed to the side of the valve core 8 close to the hollow ring 6. The rubber ring 17 cooperates with the annular groove 16 to enhance the sealing between the hollow ring 6 and the valve core 8. When the valve core 8 moves to a close fit with the hollow ring 6, the rubber ring 17 will embed into the annular groove 16, forming a reliable sealing structure.

[0042] Reference Figure 2 and Figure 3 To further enhance the seal between the first valve body 1 and the second valve body 2, this patent includes a sealing ring 5 fixedly sleeved on the outer wall of the second valve body 2. One end of the first valve body 1 extends into the sealing ring 5, which is used to seal the connection between the first valve body 1 and the second valve body 2 from the outside. Simultaneously, one side of a hollow ring 6 extends into the second valve body 2, sealing the connection between the first valve body 1 and the second valve body 2 from the inside. This dual internal and external sealing structure effectively improves the valve's sealing performance.

[0043] Reference Figure 3 and Figure 6In order to protect the key components in the drive structure, this patent fixes a box 31 on the top of the second valve body 2. The box 31 is used to protect the first bevel gear 27, the drive motor 29 and the second bevel gear 30 from being corroded and damaged by the external environment. At the same time, a guide rod 28 is fixed to the top inner wall of the box 31, and the bottom end of the guide rod 28 slides and extends into the screw 26. The guide rod 28 is used to constrain the lifting and lowering of the screw 26 to ensure the stability of its motion trajectory. The outer wall of the valve core 8 is fixed with a fixing ring 20.

[0044] Reference Figure 2 、 Figure 3 and Figure 6 In order to shield and protect the connection position of the push shaft 7, the bending plate 25 and the screw 26, a connecting column 21 is fixed to the top inner wall of the second valve body 2. A conical cover 22 is fixed to the bottom end of the connecting column 21, and the bottom end of the screw 26 slides through the connecting column 21 and slides into the conical cover 22. A closing plate 23 is fixed in the conical cover 22, and one end of the push shaft 7 seals and slides through the closing plate 23 and extends into the conical cover 22. The bending plate 25 is located in the conical cover 22, and an effective protective structure is formed by the cooperation of the conical cover 22 and the closing plate 23. At the same time, one end of the fixing rod 33 seals and slides through the conical cover 22 to ensure the sealing and stability of the entire structure.

[0045] In another embodiment: Figure 9 In order to optimize the fluid flow characteristics, this patent provides a plurality of spiral grooves 32 on the outer wall of the conical cover 22. The guiding effect of the spiral grooves 32 can make the fluid flowing through the outer wall of the conical cover 22 flow in a spiral manner, reducing the direct impact of the fluid on the second valve body 2. When the fluid flows in the spiral grooves 32, it tends to flow along the groove wall. Due to the curvature design of the groove wall, the fluid forms a spiral path in the groove and deflects toward the central axis (Coanda effect); the rotation direction of the spiral grooves 32 is combined with the fluid flow direction, so that the fluid gathers radially while gaining axial momentum, forming a spiral propulsion effect; the design of the spiral grooves 32 can guide the fluid to form a spiral flow along the conical surface, reducing the direct impact of the fluid on the second valve body 2, extending the life of the sealing surface, and the guiding effect of the spiral grooves 32 makes the valve opening and closing process smoother, reduces noise and vibration, and improves sealing reliability. At the same time, the guiding effect of the spiral grooves 32 can also prevent particulate matter from depositing on the inner wall of the pipe, reduce fluid flow resistance, reduce turbulence intensity, and make the flow more stable.

[0046] The axial flow intelligent regulating stop valve has the following beneficial effects:

[0047] High-precision flow control: Through the coordination of the drive and control structures, the movement distance of the valve core 8 is precisely controlled, thereby achieving precise regulation of the fluid flow. This high-precision flow control method meets the high-precision fluid control requirements of modern industry.

[0048] High degree of automation: The drive structure uses a drive motor 29 as the power source to achieve automatic control of the valve. By connecting with the control system, remote control and automatic adjustment functions can be achieved, improving work efficiency and convenience.

[0049] Excellent sealing performance: The sealing structure including the annular groove 16, rubber ring 17, sealing ring 5, and hollow ring 6 effectively improves the sealing performance of the valve. This excellent sealing performance prevents fluid leakage and foreign matter from entering the valve interior, extending the service life of the valve.

[0050] Pressure detection and protection: A detection structure enables real-time monitoring of the water pressure within the first valve body 1. When the pressure becomes excessive, the control system promptly activates the valve core 8 to release the seal on the hollow ring 6 and drain hole 19, preventing cracks in the first valve body 1 caused by excessive pressure. This pressure detection and protection feature enhances the safety and reliability of the valve.

[0051] Optimized fluid flow characteristics: Spiral grooves 32 are provided on the outer wall of the conical cover 22 to optimize fluid flow characteristics. This spiral flow pattern reduces direct impact of the fluid on the second valve body 2, reducing noise and vibration, and improving sealing reliability. Furthermore, the flow-guiding effect of the spiral grooves 32 prevents particulate matter from depositing on the inner wall of the pipe, reducing fluid flow resistance and turbulence intensity, resulting in more stable flow.

[0052] A method for using an axial flow intelligent regulating stop valve comprises the following steps:

[0053] S1. Butt the first valve body 1 and the second valve body 2 together, and connect the first valve body 1 and the second valve body 2 into a whole by means of the connection flange 3 and the bolt 4. When connecting, the closing ring 5 is sleeved on the connection between the first valve body 1 and the second valve body 2, and the hollow ring 6 extends into the second valve body 2 to seal the connection between the first valve body 1 and the second valve body 2. The cooperation between the hollow ring 6 and the closing ring 5 increases the sealing between the first valve body 1 and the second valve body 2.

[0054] S2. When it is necessary to release the sealing of the first valve body 1 and the second valve body 2, the second bevel gear 30 is driven to rotate by the driving motor 29. The second bevel gear 30 cooperates with the first bevel gear 27 to drive the first bevel gear 27 to rotate. A nut block is fixed in the first bevel gear 27, and the nut block is threadedly connected to the screw 26. Therefore, the first bevel gear 27 drives the screw 26 to move upward. The screw 26 pulls the push shaft 7 in the direction away from the first valve body 1 through the bent plate 25. The push shaft 7 drives the valve core 8 to move. The movement of the valve core 8 releases the sealing of the hollow ring 6, thereby allowing the fluid to flow smoothly in the first valve body 1 and the second valve body 2.

[0055] S3. When the driving shaft 7 drives the valve core 8 to move, the valve core 8 first releases the blockage of the corresponding drainage hole 19. At this time, the fluid flows into the second valve body 2 through the drainage hole 19 and the drainage annular groove 18. Then, by controlling the blockage of multiple drainage holes 19, the size of the fluid flow rate can be controlled. When the driving shaft 7 moves, the vertical plate 34 drives the sliding seat 35 and the first magnet 36 to move. The magnetic attraction between the first magnet 36 and the second magnet 41 drives the moving seat 39 to move. The cooperation between the indicator 40 and the marking plate 38 can reflect the distance moved by the valve core 8, thereby clearly indicating the size of the fluid flow entering the second valve body 2.

[0056] S4. After the fluid enters the second valve body 2, when the fluid passes through the conical cover 22, the fluid gathers toward the center along the surface arc of the conical cover 22, and in the process of gathering, it rotates in a spiral direction under the guidance of the spiral groove 32. The groove structure of the spiral groove 32 will change the streamline distribution of the fluid on the surface of the cone. Due to the constraint effect of the groove on the fluid, a radial pressure gradient will be generated when the fluid flows in the groove, pushing the fluid to gather toward the center of the groove (i.e., the axis direction of the cone); when the fluid flows in the spiral groove 32, it tends to flow along the groove wall. Due to the curvature design of the groove wall, the fluid forms a spiral path in the groove and deflects toward the central axis (Coanda effect); the rotation direction of the spiral groove 32 is combined with the flow direction of the fluid, so that the fluid obtains axial momentum while gathering radially, forming a spiral propulsion effect; the design of the spiral groove 32 can guide the fluid to form a spiral flow along the cone surface, reduce the direct impact of the fluid on the second valve body 2, and extend the life of the sealing surface. In addition, the guiding effect of the spiral groove 32 makes the valve opening and closing process smoother, reduces noise and vibration, and improves sealing reliability;

[0057] S5. In addition, the driving motor 29 drives the second bevel gear 30 to rotate in the opposite direction, which can drive the driving shaft 7 and the valve core 8 to move toward the first valve body 1, close the hollow ring 6 and the drainage hole 19, and block the flow of fluid. The fluid in the first valve body 1 pushes the give way plate 11 to move under the action of pressure. The give way plate 11 applies pressure to the ring 13 under the giving action of the spring 12. The pressure sensor 14 can detect the pressure applied by the water flow on the valve core 8, calculate the pressure in the first valve body 1, and promptly drive the valve core 8 to release the closure of the hollow ring 6 and the drainage hole 19, so as to avoid cracks in the first valve body 1 caused by excessive pressure.

[0058] However, as is well known to those skilled in the art, the working principles and wiring methods of the drive motor 29 and the pressure sensor 14 are commonplace, and are conventional means or common knowledge, and will not be elaborated here. Those skilled in the art can make any optional selections according to their needs or convenience.

[0059] The drawings in this application are for illustrative purposes only. The sizes and shapes of the components shown are not intended to be limiting, but are merely for illustrative purposes. In actual implementation, the components may be appropriately configured and adjusted based on specific needs and actual conditions.

[0060] The above description is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with the technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solution and inventive concept of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. An axial flow intelligent regulating stop valve, characterized in that: include: The first valve body (1) and the second valve body (2) of the base are connected via a connecting flange (3) and bolts (4); A hollow ring (6) is fixed in the first valve body (1), and a valve core (8) is provided in the second valve body (2). The hollow ring (6) and the valve core (8) cooperate to control the flow of fluid. The driving structure comprises: a screw (26) passing through the second valve body (2) and a driving shaft (7) arranged in the first valve body (1); The first bevel gear (27) provided on the top of the second valve body (2) is rotated, wherein a nut block is fixed therein and is threadedly connected to the screw rod (26); the second bevel gear (30) at the output end of the driving motor (29) is engaged with the first bevel gear (27); A strip groove (24) is provided on the top of the driving shaft (7); one end of the bending plate (25) is hinged to the strip groove (24) and the other end is hinged to the screw rod (26); The control structure comprises: a drainage annular groove (18) on the side of the hollow ring (6) close to the valve core (8), and a plurality of drainage holes (19); A frame (37) fixed to the top of the second valve body (2) has marking plates (38) on both sides of its top; A movable seat (39) slidably arranged in the frame (37) and an indicator mark (40) on the top thereof; The top of the sliding seat (35) is embedded with a first magnet (36), and the bottom of the moving seat (39) is embedded with a second magnet (41); The driving motor (29) drives the screw (26) to move up and down through the bevel gear pair, and drives the driving shaft (7) to move axially through the bending plate (25), so that the valve core (8) gradually opens the discharge hole (19), and the fluid enters the second valve body (2) through the discharge hole (19) and the discharge annular groove (18); at the same time, the driving shaft (7) is linked to the magnetic attraction of the sliding seat (35) and the moving seat (39), so that the indicator (40) is displaced relative to the marking plate (38) to indicate the flow rate.

2. The axial flow intelligent regulating stop valve according to claim 1, characterized in that: The valve core (8) is provided with a circular groove (10) on one side close to the hollow ring (6), a giving plate (11) is slidably connected in the circular groove (10), the giving plate (11) is connected to a plurality of springs (12) via a first spring seat, the other end of the spring (12) is connected to a circular ring (13) via a second spring seat, and a plurality of pressure sensors (14) are embedded in the side wall of the circular ring (13); When the valve core (8) is closed, the fluid pressure pushes the clearance plate (11) to compress the spring (12), and the pressure sensor (14) detects the fluid pressure through the ring (13).

3. The axial flow intelligent regulating stop valve according to claim 2, characterized in that: The hollow ring (6) is provided with an annular groove (16) near the valve core (8), and a rubber ring (17) is fixed at a corresponding position of the valve core (8). The rubber ring (17) and the annular groove (16) are interference-fitted to form a sealing pair.

4. The axial flow intelligent regulating stop valve according to claim 3, characterized in that: The outer wall of the second valve body (2) is fixed with a closed ring (5), the end of the first valve body (1) is inserted into the closed ring (5) to form an external seal, and the hollow ring (6) extends into the second valve body (2) to form an internal seal.

5. The axial flow intelligent regulating stop valve according to claim 4, characterized in that: The driving shaft (7) slides through the connecting frame (9) in the hollow ring (6); the connecting frame (9) is a guide sleeve structure, and the inner wall of the connecting frame is clearance-matched with the driving shaft (7).

6. The axial flow intelligent regulating stop valve according to claim 5, characterized in that: The top inner wall of the second valve body (2) is fixed with a connecting column (21), the bottom end of the connecting column (21) is fixed with a conical cover (22), the bottom end of the screw (26) extends into the conical cover (22), and the end of the driving shaft (7) slides in a sealed manner through the closing plate (23) in the conical cover (22), and the bending plate (25) is located in the sealing cavity formed by the conical cover (22) and the closing plate (23).

7. The axial flow intelligent regulating stop valve according to claim 6, characterized in that: The outer wall of the conical cover (22) is provided with a plurality of spiral grooves (32). The fluid flows through the spiral grooves (32) to form a swirl to reduce the turbulence intensity. The spiral angle of the spiral grooves (32) is 15°-30°, and the groove depth is 1 / 5-1 / 3 of the tube wall thickness.

8. The axial flow intelligent regulating stop valve according to claim 7, characterized in that: A fixing ring (20) is fixedly sleeved on the outer wall of the valve core (8).

9. The axial flow intelligent regulating stop valve according to claim 8, characterized in that: The bottom of the sliding seat (35) is fixed with a vertical plate (34), which is connected to the end of the driving shaft (7) through a fixed rod (33), and the fixed rod (33) is sealed and penetrates the side wall of the conical cover (22).

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