Straight-through type pneumatic control valve

Abstract

The invention relates to the technical field of regulating valves, and particularly discloses a straight-through type pneumatic regulating valve which comprises a valve body, the two ends of the valve body are sleeved with mounting and fixing devices correspondingly, one end of the valve body communicates with a buffer box body, and one side of the inner wall of the buffer box body penetrates through and is fixedly connected with an anti-scouring mechanism; the side, away from the valve body, of the buffering box body is fixedly connected with a filtering device, the top of the valve body is fixedly connected with an upper cover, the top of the upper cover communicates with a sleeve, the two sides of the sleeve are fixedly connected with connecting supports, and the tops of the connecting supports are fixedly connected with pneumatic executing mechanisms. According to the straight-through type pneumatic control valve, the installation fixing device is arranged, a user can conveniently install the valve and a pipeline, the effect of supporting the whole control valve can be achieved after installation, the anti-scouring mechanism is arranged, and the anti-scouring mechanism is arranged, so that the anti-scouring function is achieved, and the service life of the valve is prolonged. And fluid is prevented from directly impacting the interior of the valve body to cause damage.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of regulating valve, in particular to a straight-through pneumatic regulating valve. BACKGROUND

[0002] In modern process industry, such as petrochemical industry, power, metallurgy, pharmaceutical and other fields, accurate and stable regulation of process parameters such as pressure, flow, liquid level and temperature in production process is the key to guarantee product quality, improve production efficiency and ensure safe operation. In this automatic control system, the regulating valve as the final control element of process control plays the role of actuator, and its performance directly determines the regulation quality of the whole control loop. Among them, the straight-through pneumatic regulating valve has become one of the most widely used regulating valve types due to its classic structure, reliable performance and convenient maintenance.

[0003] The prior art is often limited to different heights when installing the valve and the pipeline, which is not convenient for installation. After installation, there is no fixing part, and daily use will produce strong vibration, which will lead to unstable installation and damage to the valve body after a long time. When high-speed fluid enters the valve, the components in the valve will be damaged by strong scouring force, which will increase the cost. SUMMARY

[0004] To solve the above technical problems, the present application is realized by the following technical scheme: a straight-through pneumatic regulating valve, comprising a valve body, the valve body is provided with a mounting and fixing device at both ends, a buffer box body is communicated at one end of the valve body, a scouring prevention mechanism is penetrated and fixedly connected on one side of the inner wall of the buffer box body, a filter device is fixedly connected on the side of the buffer box body away from the valve body, an upper cover is fixedly connected on the top of the valve body, a sleeve is communicated on the top of the upper cover, connecting brackets are fixedly connected on both sides of the sleeve, a pneumatic actuating mechanism is fixedly connected on the top of the connecting bracket, a valve rod is penetrated and slidably connected on the bottom of the pneumatic actuating mechanism, a scale disc is fixedly connected on the inner wall of the connecting bracket, a pointer is sleeved and fixedly connected on the valve rod, the valve rod is extended into the sleeve and slidably connected with the inner wall of the sleeve, and the valve rod is penetrated through the valve body and extended into the valve body.

[0005] Preferably, the mounting and fixing device includes a fixed base, with a first sliding sleeve and a second sliding sleeve fixedly connected to the top of the fixed base respectively. A sliding rod is slidably connected to the inner wall of the first sliding sleeve, and a threaded rod is threadedly connected to the inner wall of the second sliding sleeve. A lifting plate is fixedly connected to the top of the sliding rod, and the top of the threaded rod is rotatably connected to the lifting plate. A first motor is fixedly connected to the top of the lifting plate, and the drive shaft of the first motor passes through the lifting plate and is fixedly connected to the threaded rod. A first bracket is fixedly connected to the top of the lifting plate, and positive and negative ball screws are rotatably connected to the inner wall of the first bracket. A second motor is fixedly connected to one side of the first bracket, and the drive shaft of the second motor passes through the first bracket and is fixedly connected to the positive and negative ball screws. A first sliding block and a second sliding block are respectively sleeved and threaded onto the positive and negative ball screws. A first connecting rod is fixedly connected to the top of the first sliding block, and a first semi-circular gripper is fixedly connected to the top of the first connecting rod. A second connecting rod is fixedly connected to the top of the second sliding block, and a second semi-circular gripper is fixedly connected to the top of the second connecting rod. The first and second semi-circular grippers are respectively sleeved on both ends of the valve body. The first and second sliding blocks are symmetrically arranged on the positive and negative ball screws. Two sets of positive and negative ball screws are arranged and symmetrically distributed on the top of the lifting plate. The first motor is started to drive the threaded rod to rotate. The threaded rod is driven by the thread in the second sliding sleeve, pushing the lifting plate up and down along the guide direction of the sliding rod until the first and second semi-circular grippers move to the height that matches the two ends of the valve body, adapting to pipes with different installation heights. The second motor is started to drive the positive and negative ball screws to rotate. Because the first and second sliding blocks are engaged with the positive and negative thread sections of the screws respectively, the two sliding blocks move in opposite directions. Through the first and second connecting rods, the two semi-circular grippers move closer to each other, clamping and fixing the two ends of the valve body. After installation, the grippers continue to hold stably, preventing the valve body from shifting due to fluid impact or vibration.

[0006] Preferably, the filtration device includes a filter housing with a groove on the inner wall of the filter housing. A first electric slider is slidably connected to the inner wall of the groove. A filter plate is fixedly connected to the side of the first electric slider away from the groove. Filter holes are evenly distributed on the side of the filter plate. A scraper is fixedly connected to the side of the filter plate and slidably connected to the inner wall of the filter housing. A cleaning mechanism is fixedly connected to one side of the filter housing. The filter housing is fixedly connected to a buffer housing and communicates with the buffer housing. The scraper is wedge-shaped and fits against the inner wall of the filter housing. After the fluid enters the filter housing, it intercepts impurity particles through the filter holes of the filter plate. As the filtration time increases, when impurities accumulate on the surface of the filter plate and the inner wall of the housing, the first electric slider is activated, driving the filter plate to move along the groove. The filter plate simultaneously drives the wedge-shaped scraper to move, sliding against the inner wall of the filter housing to scrape off the impurities attached to the inner wall. When the first electric slider moves the filter plate to the position of the cleaning mechanism, it can cooperate with subsequent deep cleaning to avoid impurities accumulating and clogging the filter holes, ensuring fluid throughput efficiency.

[0007] Preferably, the cleaning mechanism includes a first slide rail, a second electric slider slidably connected to the inner wall of the first slide rail, a connecting plate fixedly connected to the side of the second electric slider away from the first slide rail, cleaning brushes evenly fixedly connected to the side of the connecting plate, a second slide rail fixedly connected to the top of the connecting plate, a third electric slider slidably connected to the inner wall of the second slide rail, a third connecting rod fixedly connected to the side of the third electric slider away from the second slide rail, and a cleaning comb plate fixedly connected to the bottom of the third connecting rod. The first slide rail is fixedly connected to one side of the filter box. After the filter plate moves to the position of the cleaning mechanism, the second electric slider is activated to slide along the first slide rail, driving the connecting plate and the cleaning brush to move synchronously. The cleaning brush slides against the surface of the filter plate to thoroughly clean the impurities attached to the filter plate. After the cleaning brush has worked for a certain period of time, when fine impurities are attached to the surface, the third electric slider is activated to slide along the second slide rail, driving the third connecting rod and the cleaning comb plate to move. The cleaning comb plate inserts into the gaps between the bristles of the cleaning brush to comb away the tangled impurities, maintaining the cleanliness and cleaning ability of the brush.

[0008] Preferably, the anti-scouring mechanism includes a water inlet pipe, one end of which is connected to a first conical outer shell, and the end of the first conical outer shell away from the water inlet pipe is connected to a second conical outer shell. A first fixing plate is fixedly connected to the inner wall of the first conical outer shell. A first conical cylinder is penetrated and fixedly connected to one side of the first fixing plate. A second fixing plate is fixedly connected to the portion of the inner wall of the first conical outer shell located on one side of the first conical cylinder. A second conical cylinder is penetrated and fixedly connected to the side of the second fixing plate. First buffer energy dissipation holes are evenly distributed on the first conical cylinder, and second buffer energy dissipation holes are evenly distributed on the second conical cylinder. A spiral water guide plate is fixedly connected to one side of the inner wall of the first conical cylinder. One end of the water inlet pipe penetrates one side of the buffer tank and is fixedly connected to the buffer tank. The second conical shell is fixedly connected to the buffer box, and the water inlet pipe is connected to the filter box. The second conical shell is connected to one end of the valve body. The filtered high-speed fluid enters the first conical shell through the water inlet pipe. Under the guidance of the spiral guide vane, the rapid water flow is transformed into a gentle spiral water flow. The water flow diffuses outward under the action of centrifugal force and enters the interior of the first conical shell through the first buffer energy dissipation hole on the side of the first conical cylinder, completing the first energy dissipation. Subsequently, the water flow enters the second conical cylinder under the guidance of the conical structure and undergoes secondary energy dissipation through the second buffer energy dissipation hole, realizing gradual diffusion and multi-stage buffering. The conical structure of the first and second conical shells further guides the water flow to gradually decelerate, avoiding direct impact of high-speed fluid on the internal components of the valve body.

[0009] This invention provides a straight-through pneumatic regulating valve. It has the following advantages: 1. This straight-through pneumatic control valve achieves efficient and precise installation through motor-driven lifting and bidirectional clamp adjustment. After starting the first motor, the threaded transmission between the threaded rod and the sliding sleeve drives the lifting plate to rise and fall along the sliding rod. The clamp height can be flexibly adjusted according to different pipeline heights, eliminating the need for manual shimming or pipe cutting. Subsequently, the second motor drives the forward and reverse ball screws, causing the first and second sliding blocks to move in opposite directions, driving the semi-circular clamps to move closer together and quickly clamp both ends of the valve body. This avoids the cumbersome traditional manual alignment and bolt fixing methods. On the one hand, it eliminates the need for manual handling of the valve body for alignment, reducing physical exertion and installation errors. On the other hand, the clamps form a stable clamping force after clamping, which can resist fluid impacts, such as the impact force generated by the instantaneous switching of high-pressure fluids and pipeline vibrations. This prevents valve body displacement from causing sealing leaks or a decrease in adjustment accuracy, ensuring that the control valve maintains structural stability during long-term operation.

[0010] 2. This straight-through pneumatic regulating valve allows fluid to enter the filter housing. The filter plate intercepts impurities, such as pipe rust particles and media residues, through the filter holes, preventing impurities from entering the valve body, causing jamming of the valve core, or wearing of the seals. As impurities accumulate, the first electric slider moves the filter plate along the slide groove, simultaneously driving the wedge-shaped scraper to scrape off impurities adhering to the inner wall of the filter housing. The wedge structure enhances the scraping force, preventing impurities from adhering to the inner wall and forming hard scale. This avoids the cumbersome steps of stopping the machine for disassembly and cleaning required by traditional equipment after impurities accumulate. Scraper cleaning reduces the impurity load on the inner wall of the filter housing, improves the long-term filtration effect, ensures stable fluid delivery efficiency, and reduces the impact of downtime maintenance on the production process.

[0011] 3. This straight-through pneumatic regulating valve achieves fully automatic cleaning through a brush cleaning filter plate and a comb plate cleaning brush. When the filter plate moves to the cleaning area, the second electric slider drives the cleaning brush to move along the first slide rail, thoroughly cleaning residual impurities on the surface of the filter plate. The soft material of the brush avoids scratching the filter holes and ensures that the gaps are clean. For the small impurities attached to the brush after use, the third electric slider drives the cleaning comb plate to move along the second slide rail. The comb teeth insert into the gaps between the brush bristles to comb away the impurities, maintaining the cleanliness and cleaning ability of the brush. This dual cleaning avoids the tediousness and labor intensity of manual disassembly and cleaning, ensuring that the filter plate and brush are always in a clean state, preventing impurities from secondary contaminating the fluid or clogging the filter holes, greatly reducing the frequency and cost of manual maintenance, and improving the reliability of continuous equipment operation.

[0012] 4. This straight-through pneumatic control valve addresses the issue of high-speed fluid damage to the valve body by employing a gradual multi-stage buffer design to protect the valve body. Filtered high-speed fluid enters the first conical shell through the inlet pipe. The spiral guide vanes transform the turbulent water flow into an ordered spiral flow, reducing localized high pressure generated by fluid turbulence. Under centrifugal force, the water diffuses through the first buffer energy dissipation hole, initially consuming energy. Subsequently, the water flows into the second conical cylinder, where it undergoes secondary energy dissipation through the second buffer energy dissipation hole. Combined with the guiding effect of the conical shell, the flow velocity is gradually reduced, preventing high-speed fluid from directly impacting the internal components of the valve body, reducing scouring and wear. Furthermore, energy consumption can reduce pipeline vibration and noise caused by water flow impact, ensuring the smooth operation of the control valve and the entire pipeline system. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the straight-through pneumatic regulating valve structure of the present invention; Figure 2 This is a schematic diagram of the internal structure of the straight-through pneumatic regulating valve of the present invention; Figure 3 This is a schematic diagram of the connection structure of the mounting and fixing device of the present invention; Figure 4 This is a schematic diagram of the mounting and fixing device structure of the present invention; Figure 5 This is a schematic diagram of the filter device structure of the present invention; Figure 6 This is a schematic diagram of the cleaning mechanism structure of the present invention; Figure 7 This is a schematic diagram of the connection structure of the anti-erosion mechanism of the present invention; Figure 8 This is a schematic diagram of the anti-erosion mechanism of the present invention; Figure 9 This is a schematic diagram of the internal structure of the anti-erosion mechanism of the present invention. In the diagram: 1. Valve body; 2. Mounting and fixing device; 3. Buffer box; 4. Anti-erosion mechanism; 5. Filter device; 6. Top cover; 7. Sleeve; 8. Connecting bracket; 9. Pneumatic actuator; 10. Valve stem; 11. Dial; 12. Pointer; 21. Fixed base; 22. First sliding sleeve; 23. Second sliding sleeve; 24. Sliding rod; 25. Threaded rod; 26. Lifting plate; 27. First motor; 28. First bracket; 29. ​​Positive and negative ball screws; 210. Second motor; 211. First sliding block; 212. Second sliding block; 213. First connecting rod; 214. First semi-circular gripper; 215. Second connecting rod; 216. Second semi-circular gripper. 51. Circular gripper; 52. Filter box body; 53. Slide groove; 54. First electric slider; 55. Filter plate; 56. Filter hole; 57. Scraper; 58. Cleaning mechanism; 59. First slide rail; 50. Second electric slider; 51. Connecting plate; 52. Cleaning brush; 53. Second slide rail; 54. Third electric slider; 55. Third connecting rod; 56. Cleaning comb plate; 57. Water inlet pipe; 48. First conical shell; 49. Second conical shell; 40. First fixing plate; 41. First conical cylinder; 42. Second fixing plate; 43. Second conical cylinder; 44. First buffer energy dissipation hole; 45. Second buffer energy dissipation hole; 46. Spiral water guide plate. Detailed Implementation

[0014] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0015] For the first embodiment, please refer to... Figures 1-4This invention provides a technical solution: a straight-through pneumatic regulating valve, comprising a valve body 1, with mounting and fixing devices 2 respectively fitted at both ends of the valve body 1, a buffer box 3 connected to one end of the valve body 1, an anti-erosion mechanism 4 connected through and fixedly connected to one side of the inner wall of the buffer box 3, a filter device 5 fixedly connected to the side of the buffer box 3 away from the valve body 1, a top cover 6 fixedly connected to the top of the valve body 1, a sleeve 7 connected to the top of the top cover 6, connecting brackets 8 fixedly connected to both sides of the sleeve 7, a pneumatic actuator 9 fixedly connected to the top of the connecting brackets 8, and a valve stem 1 slidably connected through and to the bottom of the pneumatic actuator 9. 0. A dial 11 is fixedly connected to the inner wall of the connecting bracket 8. A pointer 12 is sleeved and fixedly connected to the valve stem 10. The valve stem 10 extends into the sleeve 7 and is slidably connected to the inner wall of the sleeve 7. The valve stem 10 passes through the valve body 1 and extends into the valve body 1. The mounting and fixing device 2 includes a fixed base 21. A first sliding sleeve 22 and a second sliding sleeve 23 are fixedly connected to the top of the fixed base 21 respectively. A sliding rod 24 is slidably connected to the inner wall of the first sliding sleeve 22. A threaded rod 25 is threadedly connected to the inner wall of the second sliding sleeve 23. A lifting plate 26 is fixedly connected to the top of the sliding rod 24. The top of the threaded rod 25 is rotatably connected to the lifting plate 26. A first motor 27 is fixedly connected to the top of the lifting plate 26. The drive shaft of the first motor 27 passes through the lifting plate 26 and is fixedly connected to the threaded rod 25. A first bracket 28 is fixedly connected to the top of the lifting plate 26. A positive and negative ball screw 29 is rotatably connected to the inner wall of the first bracket 28. A second motor 210 is fixedly connected to one side of the first bracket 28. The drive shaft of the second motor 210 passes through the first bracket 28 and is fixedly connected to the positive and negative ball screw 29. A first sliding block 211 and a second sliding block 212 are respectively sleeved and threaded onto the positive and negative ball screw 29. 12. The top of the first sliding block 211 is fixedly connected to the first connecting rod 213, and the top of the first connecting rod 213 is fixedly connected to the first semi-circular gripper 214. The top of the second sliding block 212 is fixedly connected to the second connecting rod 215, and the top of the second connecting rod 215 is fixedly connected to the second semi-circular gripper 216. The first semi-circular gripper 214 and the second semi-circular gripper 216 are respectively sleeved on both ends of the valve body 1. The first sliding block 211 and the second sliding block 212 are symmetrically arranged on the positive and negative ball screws 29. Two sets of positive and negative ball screws 29 are arranged and symmetrically distributed on the top of the lifting plate 26.

[0016] In use, firstly, the mounting device 2 is securely placed using the fixed base 21. Then, the first motor 27 is started. The drive shaft of the first motor 27 rotates, causing the threaded rod 25 to rotate. The rotation of the threaded rod 25 causes threaded transmission within the second sliding sleeve 23, thereby pushing the lifting plate 26 upwards along the guide direction of the sliding rod 24 until the first semi-circular gripper 214 and the second semi-circular gripper 216 move to a height suitable for both ends of the valve body 1. Next, the second motor 210 is started. The drive shaft of the second motor 210 drives the forward and reverse ball screws 29 to rotate. Since the first sliding block 211 and the second sliding block 212 are threadedly connected to the forward and reverse threaded sections of the forward and reverse ball screws 29 respectively, when the forward and reverse ball screws 29 rotate, the first... The first sliding block 211 and the second sliding block 212 move in opposite directions, thereby driving the first semi-circular jaw 214 and the second semi-circular jaw 216 to move closer together through the first connecting rod 213 and the second connecting rod 215, clamping and fixing both ends of the valve body 1, realizing the quick installation and positioning of the valve body 1. This allows for convenient installation by flexibly adjusting the height and spacing of the jaws according to the position of the pipeline, without the need for manual fixing. After installation, the first semi-circular jaw 214 and the second semi-circular jaw 216 can form a stable clamp on the valve body 1, effectively preventing the valve body 1 from shifting due to fluid impact or vibration during operation, ensuring the structural stability of the entire regulating valve, and thus improving the adaptability and stability of the installation.

[0017] Second embodiment, please refer to Figures 1-5 Based on the first embodiment, the present invention provides a technical solution: the filter device 5 includes a filter box 51, a groove 52 is provided on the inner wall of the filter box 51, a first electric slider 53 is slidably connected to the inner wall of the groove 52, a filter plate 54 is fixedly connected to the side of the first electric slider 53 away from the groove 52, filter holes 55 are evenly provided on the side of the filter plate 54, a scraper 56 is fixedly connected to the side of the filter plate 54, the side of the filter plate 54 is slidably connected to the inner wall of the filter box 51, a cleaning mechanism 57 is fixedly connected to one side of the filter box 51, the filter box 51 is fixedly connected to a buffer box 3, the filter box 51 and the buffer box 3 are in communication, the scraper 56 is wedge-shaped, and the scraper 56 is in contact with the inner wall of the filter box 51.

[0018] In use, when fluid enters the filter housing 51, it is filtered through the filter holes 55 on the filter plate 54. The filter holes 55 can effectively intercept impurity particles in the fluid. As the filtration time increases, a certain amount of impurities will accumulate on the surface of the filter plate 54. At this time, the first electric slider 53 is activated. The first electric slider 53 slides and drives the filter plate 54 to move along the slide groove 52. The movement of the filter plate 54 drives the scraper 56 to move. The wedge-shaped scraper 56 will scrape off the impurities attached to the inner wall of the filter housing 51. When the first electric slider 53 moves to a position close to the cleaning mechanism 57, it cleans the filter plate 54, thereby improving the continuous filtration effect of the filter device 5 and avoiding the accumulation of impurities that affect the fluid throughput efficiency.

[0019] Third embodiment, please refer to Figures 1-6 Based on the second embodiment, the present invention provides a technical solution: the cleaning mechanism 57 includes a first slide rail 571, a second electric slider 572 is slidably connected to the inner wall of the first slide rail 571, a connecting plate 573 is fixedly connected to the side of the second electric slider 572 away from the first slide rail 571, cleaning brushes 574 are evenly fixedly connected to the side of the connecting plate 573, a second slide rail 575 is fixedly connected to the top of the connecting plate 573, a third electric slider 576 is slidably connected to the inner wall of the second slide rail 575, a third connecting rod 577 is fixedly connected to the side of the third electric slider 576 away from the second slide rail 575, a cleaning comb plate 578 is fixedly connected to the bottom of the third connecting rod 577, and the first slide rail 571 is fixedly connected to one side of the filter box 51.

[0020] In use, when the filter plate 54 moves to the cleaning mechanism 57 position, the second electric slider 572 is activated. The second electric slider 572 slides along the inner wall of the first slide rail 571, causing the connecting plate 573 to move axially along the first slide rail 571. The movement of the connecting plate 573 causes the cleaning brush 574 to move synchronously. The cleaning brush 574 contacts the surface of the filter plate 54 to clean the impurities attached to the filter plate 54. Because some fine impurities will remain on the surface of the cleaning brush 574 after a certain period of cleaning, it needs to be cleaned to avoid affecting the subsequent cleaning effect of the cleaning brush 574 on the filter plate 54. Then, the third electric slider 576 is activated. The third electric slider 576 slides along the inner wall of the second slide rail 575. The third connecting rod 577 moves, causing the cleaning comb plate 578 to move axially along the second slide rail 575. Since the cleaning brush 574 is soft, the cleaning comb plate 578 can insert into the gaps between the bristles of the cleaning brush 574 during movement, combing away the impurities entangled therein, thereby maintaining the cleanliness and cleaning ability of the cleaning brush 574. The cleaning mechanism 57, through the cooperation of the second electric slider 572 and the third electric slider 576, achieves full coverage cleaning of the cleaning brush 574 on the surface of the filter plate 54, as well as efficient cleaning of the cleaning brush 574 by the cleaning comb plate 578, further improving the automatic cleaning effect of the filter device 5 and reducing the frequency and cost of manual maintenance.

[0021] For the fourth embodiment, please refer to [link / reference]. Figures 1-9 Based on the third embodiment, the present invention provides a technical solution: the anti-erosion mechanism 4 includes a water inlet pipe 41, one end of which is connected to a first conical outer shell 42, and the other end of the first conical outer shell 42 away from the water inlet pipe 41 is connected to a second conical outer shell 43. A first fixing plate 44 is fixedly connected to the inner wall of the first conical outer shell 42, and a first conical cylinder 45 is fixedly connected to one side of the first fixing plate 44. A second fixing plate 46 is fixedly connected to the portion of the inner wall of the first conical outer shell 42 located on one side of the first conical cylinder 45. A second conical cylinder 47 is fixedly connected to the side of the first conical cylinder 45. The first conical cylinder 45 is evenly provided with first buffer energy dissipation holes 48. The second conical cylinder 47 is evenly provided with second buffer energy dissipation holes 49. A spiral water guide plate 410 is fixedly connected to one side of the inner wall of the first conical cylinder 45. One end of the water inlet pipe 41 passes through one side of the buffer box 3 and is fixedly connected to the buffer box 3. The second conical outer shell 43 passes through the buffer box 3 and is fixedly connected to the buffer box 3. The water inlet pipe 41 is connected to the filter box 51. The second conical outer shell 43 is connected to one end of the valve body 1.

[0022] During use, the filtered fluid, due to its high flow rate, avoids scouring the valve body 1 by allowing the high-velocity fluid to enter the first conical shell 42 through the inlet pipe 41. Guided by the spiral guide vane 410, the turbulent water flow is transformed into a more orderly and gentle spiral flow. Under the action of centrifugal force, the water flow diffuses outward and enters the interior of the first conical shell 42 through the first buffer energy dissipation hole 48 on the side of the first conical cylinder 45. Then, guided by the water flow, it enters the interior of the second conical cylinder 47 from the interior of the first conical shell 42. It undergoes secondary energy dissipation through the second buffer energy dissipation hole 49 on the side of the second conical cylinder 47, forming a gradual diffusion multi-stage buffer. When the water flow passes through these holes, the main flow velocity is reduced while consuming the water flow energy. The conical structure of the first conical shell 42 and the second conical shell 43 further guides the water flow to gradually decelerate, preventing the high-speed fluid from directly impacting the internal components of the valve body 1. This effectively reduces the scouring and wear of the valve body 1 by the fluid, extends the service life of the regulating valve, and reduces the vibration and noise caused by the water flow impact, improving the stability of the entire device operation.

[0023] Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. All other embodiments obtained by those skilled in the art and related fields based on the embodiments of the present invention without inventive effort should fall within the scope of protection of the present invention. Structures, devices, and operating methods not specifically described and explained in the present invention, unless otherwise specified or limited, shall be implemented according to conventional means in the art.

Claims

1. A straight-through pneumatic regulating valve, characterized in that: The valve body (1) includes a valve body (1), with mounting and fixing devices (2) fitted at both ends. One end of the valve body (1) is connected to a buffer box (3). An anti-erosion mechanism (4) is fixedly connected through and fixed to one side of the inner wall of the buffer box (3). A filter device (5) is fixedly connected to the side of the buffer box (3) away from the valve body (1). A top cover (6) is fixedly connected to the top of the valve body (1). A sleeve (7) is connected to the top of the top cover (6). Both sides of the sleeve (7) are fixedly connected to connecting... A connecting bracket (8) is fixedly connected to the top of the connecting bracket (8), and a pneumatic actuator (9) is fixedly connected to the bottom of the pneumatic actuator (9) through and slidingly connected to a valve stem (10). A dial (11) is fixedly connected to the inner wall of the connecting bracket (8), and a pointer (12) is sleeved and fixedly connected to the valve stem (10). The valve stem (10) extends into the sleeve (7) and slides through the inner wall of the sleeve (7). The valve stem (10) passes through the valve body (1) and extends into the valve body (1).

2. The straight-through pneumatic regulating valve according to claim 1, characterized in that: The mounting and fixing device (2) includes a fixed base (21). A first sliding sleeve (22) and a second sliding sleeve (23) are fixedly connected to the top of the fixed base (21). A sliding rod (24) is slidably connected to the inner wall of the first sliding sleeve (22). A threaded rod (25) is threadedly connected to the inner wall of the second sliding sleeve (23). A lifting plate (26) is fixedly connected to the top of the sliding rod (24). The top of the threaded rod (25) is rotatably connected to the lifting plate (26). A first motor (27) is fixedly connected to the top of the lifting plate (26). The drive shaft of the first motor (27) passes through the lifting plate (26) and is fixedly connected to the threaded rod (25). A first bracket (28) is fixedly connected to the top of the lifting plate (26). 28) The inner wall is rotatably connected to a positive and negative ball screw (29). A second motor (210) is fixedly connected to one side of the first bracket (28). The drive shaft of the second motor (210) passes through the first bracket (28) and is fixedly connected to the positive and negative ball screw (29). A first sliding block (211) and a second sliding block (212) are respectively sleeved and threaded on the positive and negative ball screw (29). A first connecting rod (213) is fixedly connected to the top of the first sliding block (211). A first semi-circular gripper (214) is fixedly connected to the top of the first connecting rod (213). A second connecting rod (215) is fixedly connected to the top of the second sliding block (212). A second semi-circular gripper (216) is fixedly connected to the top of the second connecting rod (215).

3. A straight-through pneumatic regulating valve according to claim 2, characterized in that: The first semi-circular gripper (214) and the second semi-circular gripper (216) are respectively sleeved on both ends of the valve body (1). The first sliding block (211) and the second sliding block (212) are symmetrically arranged on the positive and negative ball screws (29). The positive and negative ball screws (29) are provided in two sets and symmetrically distributed on the top of the lifting plate (26).

4. A straight-through pneumatic regulating valve according to claim 1, characterized in that: The filter device (5) includes a filter box (51), the inner wall of the filter box (51) is provided with a groove (52), the inner wall of the groove (52) is slidably connected to a first electric slider (53), the side of the first electric slider (53) away from the groove (52) is fixedly connected to a filter plate (54), the side of the filter plate (54) is evenly provided with filter holes (55), the side of the filter plate (54) is fixedly connected to a scraper (56), the side of the filter plate (54) is slidably connected to the inner wall of the filter box (51), and a cleaning mechanism (57) is fixedly connected to one side of the filter box (51).

5. A straight-through pneumatic regulating valve according to claim 4, characterized in that: The filter box (51) is fixedly connected to the buffer box (3), the filter box (51) is connected to the buffer box (3), the scraper (56) is wedge-shaped, and the scraper (56) is in contact with the inner wall of the filter box (51).

6. A straight-through pneumatic regulating valve according to claim 4, characterized in that: The cleaning mechanism (57) includes a first slide rail (571), a second electric slider (572) is slidably connected to the inner wall of the first slide rail (571), a connecting plate (573) is fixedly connected to the side of the second electric slider (572) away from the first slide rail (571), and cleaning brushes (574) are evenly fixedly connected to the side of the connecting plate (573).

7. A straight-through pneumatic regulating valve according to claim 6, characterized in that: The top of the connecting plate (573) is fixedly connected to a second slide rail (575), and the inner wall of the second slide rail (575) is slidably connected to a third electric slider (576). The side of the third electric slider (576) away from the second slide rail (575) is fixedly connected to a third connecting rod (577), and the bottom of the third connecting rod (577) is fixedly connected to a cleaning comb plate (578). The first slide rail (571) is fixedly connected to one side of the filter box (51).

8. A straight-through pneumatic regulating valve according to claim 1, characterized in that: The anti-scouring mechanism (4) includes an inlet pipe (41), one end of which is connected to a first conical shell (42), and the other end of the first conical shell (42) away from the inlet pipe (41) is connected to a second conical shell (43). A first fixing plate (44) is fixedly connected to the inner wall of the first conical shell (42). A first conical cylinder (45) is fixedly connected to one side of the first fixing plate (44). A second fixing plate (46) is fixedly connected to the part of the inner wall of the first conical shell (42) located on one side of the first conical cylinder (45). A second conical cylinder (47) is fixedly connected to the side of the second fixing plate (46). A first buffer energy dissipation hole (48) is evenly opened on the first conical cylinder (45). A second buffer energy dissipation hole (49) is evenly opened on the second conical cylinder (47). A spiral water guide plate (410) is fixedly connected to one side of the inner wall of the first conical cylinder (45).

9. A straight-through pneumatic regulating valve according to claim 8, characterized in that: One end of the water inlet pipe (41) passes through one side of the buffer box (3) and is fixedly connected to the buffer box (3). The second conical shell (43) passes through the buffer box (3) and is fixedly connected to the buffer box (3). The water inlet pipe (41) is connected to the filter box (51). The second conical shell (43) is connected to one end of the valve body (1).

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