Environment-friendly self-cleaning sealing surface stop valve

Abstract

The invention belongs to the technical field of valve manufacturing, and particularly relates to an environment-friendly self-cleaning sealing surface stop valve which comprises a valve body, and a flow channel of the valve body is arranged in a low-in high-out mode. The valve seat is arranged in a flow channel in the valve body and is of a hollow structure on the whole, a drainage groove is formed in the outer edge of the valve seat, and discharge grooves communicating with the drainage groove are formed in one side of the valve seat and one side of the valve body. Settled impurity particles can slide into the drainage groove along the slope surface and are discharged out of the valve body through the discharge groove, meanwhile, when the valve is closed, the impurity treatment assembly conducts all-directional flushing on the contact face of the outward inclined plate and the valve clack through the spray head assembly by means of stored cleaning liquid, the residual impurity particles are thoroughly removed, and the service life of the valve is prolonged. Impurity particles are prevented from affecting tight attachment of the valve clack and the sealing face of the valve seat, liquid medium leakage is effectively prevented, and the sealing performance of the stop valve is guaranteed.

Description

Technical Field

[0001] The invention belongs to the technical field of valve manufacturing, and in particular relates to an environmentally friendly self-cleaning sealing surface stop valve. Background Art

[0002] The stop valve is a commonly used valve type. It relies on the valve stem pressure to make the valve disc sealing surface fit tightly against the valve seat sealing surface to prevent the flow of medium. The stop valve is usually composed of main components such as valve body, valve cover, valve stem, valve disc, seal, etc. Its main function is to cut off the flow of medium in the pipeline. In industrial production, when a certain equipment needs to be repaired or maintained, the corresponding stop valve can be closed to isolate the equipment from other running pipeline systems to ensure the safety of maintenance work.

[0003] The core function of the stop valve is to cut off the flow of media in the pipeline. Only through good sealing can the valve disc sealing surface fit closely with the valve seat sealing surface to effectively prevent the medium from passing through. Otherwise, the medium will seep out or spray out from the sealing surface of the valve disc and the valve seat, resulting in fluid loss. Leakage will affect the accuracy of production. Currently, a gasket is usually installed between the valve disc and the valve seat. Pressure is applied through the valve stem to make the valve disc tightly pressed against the valve seat to achieve a sealing effect.

[0004] When the liquid in the pipeline passes through the stop valve, the liquid itself contains impurity particles (such as solid particles, sand, rust, etc.). The stop valve usually adopts a low-inlet and high-outlet installation method. The liquid flows in from the bottom of the valve seat and flows out from the top of the valve disc. When the valve is closed, the liquid flow velocity suddenly decreases near the valve seat. When the flow velocity decreases, the impurity particles are more likely to settle toward the valve seat under the action of gravity, and then be trapped in the groove on the top of the valve seat and adhere to the bottom of the valve disc. The impurity particles will prevent the valve disc and the valve seat sealing surface from fitting tightly, destroying the sealing performance and causing the liquid medium to leak. Secondly, even tiny particles will cause scratches or pits on the sealing surface of the valve disc and the valve seat. Over a long period of time, the valve seat surface will be worn, causing the size and shape of the valve seat to change, affecting its dimensional accuracy and shape, and thus affecting the performance of the valve. Summary of the invention

[0005] In order to solve the above problems, the present invention adopts the following technical solution, an environmentally friendly self-cleaning sealing surface stop valve, comprising: The flow passage of the valve body is arranged in a low-inlet and high-outlet manner; The valve seat is arranged in the flow channel inside the valve body, and is in a hollow structure as a whole. A drainage groove is provided on its outer edge. A discharge groove is provided on one side of the valve seat and the valve body, and the discharge groove is connected to the drainage groove. A valve stem, arranged on the upper part of the valve body; A valve disc is arranged at the bottom of the valve stem and above the valve seat, with its bottom inclined along the outside and its bottommost end located in the middle of the drainage groove; An inclined plate is arranged on the top of the valve seat. Its top is inclined outward, and a sealing gasket is provided on its surface. An impurity treatment assembly is arranged inside the valve seat and is used to clean the impurity particles on the contact surface between the inclined plate and the valve flap.

[0006] Furthermore, a liquid blocking cylinder that closely adheres to the inside of the valve seat is installed at the bottom of the valve flap. The impurity treatment assembly: Conical filter plates, the number of which is at least four, are integrally conical and symmetrically installed inside the valve body. A liquid storage tank, which is cylindrical in structure, is opened inside the valve body and corresponds to the conical filter plates one by one. A safety valve is installed at the bottom of the liquid storage tank. A first return spring is installed on the bottom wall of the liquid storage tank. A liquid inlet plate is slidably connected inside the liquid storage tank and fixedly connected to one end of the first return spring. The liquid inlet plate is arranged in a hollow shape. A driving rod, one end of which is slidably connected inside the conical filter plate. A liquid blocking plate is installed at the bottom of the driving rod. A liquid distribution pipe is installed inside the valve body, and its water inlet end and the safety valve are connected by a pipeline. Two water outlet ends are provided inside the liquid distribution pipe. A hollow disk is arranged inside the valve body and is connected to the first water outlet end of the liquid distribution pipe through a pipeline. A nozzle assembly is arranged on the hollow disk. A driving assembly is arranged inside the valve body and is used to drive the driving rod to move along the inside of the liquid storage tank.

[0007] Furthermore, the nozzle assembly includes: A nozzle cover, which is annularly installed on the inner wall of the hollow disk, is arranged in a long strip shape. The upper and lower ends of the long strip shape are set as inclined parts. Spray holes are opened inside the inclined parts. The spray holes below the inclined part are arranged along the direction of the inclined plate, and the spray holes above the inclined part are arranged along the inclined direction of the outside of the valve flap.

[0008] Furthermore, the spray holes of the inclined part are inclined at an angle of sixty degrees along the directions of the inclined plate and the valve flap.

[0009] Furthermore, a spray generator is installed between the spaced nozzle covers on the hollow disk.

[0010] Furthermore, a spray groove communicating with the drainage groove is opened at the bottom left end of the valve seat. The second water outlet end of the liquid distribution pipe is connected to the spray groove. The bottom wall of the drainage groove is arranged in an inclined manner from left to right.

[0011] Further, a pressure sensor is installed at the bottom of the liquid storage tank, a micro solenoid valve is installed on one side of the water outlet end of the liquid storage tank, an oil storage cavity connected to the micro solenoid valve is installed inside the valve body, and an oil injection hole is installed outside the valve body at one end of the oil storage cavity.

[0012] Further, the impurity treatment assembly further includes: Air cylinders, with at least two in number, symmetrically installed inside the valve body; A reset spring plate installed inside the air cylinder; An air injection rod, slidably connected inside the air cylinder and fixedly connected to the reset spring plate, with the top of the air injection rod below the drive assembly; Curved cylinders, with at least two in number, one installed inside the front end of the valve body and the other installed inside the rear end of the valve body; An air pipe, with one end at the air outlet end of the air cylinder and the other end installed at the air inlet end of the curved cylinder; An expansion curved rod, slidably connected inside the curved cylinder, and one end of the expansion curved rod extending outside the curved cylinder; Drive plates, with at least two in number, one installed on the left side of the hollow disk, the hollow disk rotatably connected to the valve body, and the other installed on the right side of the inclined plate. One end of the left drive plate and the extended part of the expansion curved rod are fixedly connected, and one end of the right drive plate passes through the valve seat and is fixedly connected to one end of the expansion curved rod.

[0013] Further, the drive assembly includes: Arc-shaped passive plates, with at least two in number, symmetrically installed on the tops of the drive rods and the air injection rods at the front and rear ends; Active blocks, installed on the top of the valve flap and corresponding to the arc-shaped passive plates one by one.

[0014] Compared with the prior art, the environmentally friendly self-cleaning sealing surface globe valve of the present invention has the following advantages: 1. Through the impurity treatment assembly of the present invention, when the valve is closed, a diversion slope is formed between the bottom surface of the valve flap and the top surface of the inclined plate. Settled impurity particles can slide down the slope into the drainage groove and be discharged from the valve body through the discharge groove. At the same time, when the valve is closed, the impurity treatment assembly uses the stored cleaning liquid to comprehensively wash the contact surface between the inclined plate and the valve flap through the spray head assembly, thoroughly removing residual impurity particles, avoiding the influence of impurity particles on the tight fit of the sealing surface between the valve flap and the valve seat, effectively preventing liquid medium leakage, and ensuring the sealing performance of the globe valve.

[0015] 2. The present invention sets up a dual protection mechanism to reduce the wear of the sealing surface. On the one hand, the conical filter plate initially intercepts impurities during the liquid inflow stage, reducing the impurity content entering the liquid storage tank. On the other hand, when the valve is closed, the nozzle assembly uses the stored cleaning liquid to conduct secondary flushing on the contact surface between the outer inclined plate and the valve flap. In addition, the mist-like liquid generated by the spray generator can soften and loosen stubborn impurities, cooperate with the water flow to more thoroughly remove the impurities, and can also form a lubricating liquid film, reducing the wear of the sealing surface caused by the cleaning process, reducing the risk of scratches and pits on the sealing surface, and effectively extending the service life of the globe valve.

[0016] 3. The present invention uses the pressure change during the opening and closing process of the valve to drive the operation of the impurity treatment component, without the need for additional power equipment, reducing energy consumption, which conforms to the concept of energy conservation and environmental protection. At the same time, through the liquid filtration and storage during valve opening and the triggering of jet cleaning by the drive component during valve closing, a fully automated process for impurity cleaning is achieved. Without manual intervention, impurities on the contact surface between the outer inclined plate and the valve flap can be actively removed during the valve opening and closing process. Compared with traditional manual cleaning or passive interception methods, the cleaning efficiency is greatly improved, the manual maintenance cost is reduced, and the stability and reliability of equipment operation are enhanced. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is the overall structural schematic diagram of the present invention; Figure 2 is the exploded view of the overall structure of the present invention; Figure 3 is the cross-sectional view of the valve body of the present invention; Figure 4 is the schematic diagram of the connection between the valve flap and the outer inclined plate of the present invention; Figure 5 is the schematic diagram of the valve seat of the present invention; Figure 6 is the longitudinal sectional view of the valve seat of the present invention; Figure 7 is the schematic diagram of the liquid storage tank of the present invention; Figure 8 is Figure 6 the partial enlarged view of A in Figure 9 is the schematic diagram of the spraying angle of the water spraying holes of the present invention; Figure 10 is the schematic diagram of the drain groove of the valve seat of the present invention; Figure 11 is the schematic diagram of the oil storage cavity of the present invention; Figure 12 is Figure 3 the three-dimensional structural schematic diagram in Figure 13 is the longitudinal sectional view of the air cylinder of the present invention; Figure 14It is a cross-sectional view of the typical cylinder of the present invention; Figure 15 It is a schematic diagram of the typical cylinder on the right side of the present invention.

[0018] The markings in the figure are shown as: 1. Valve body; 12. Valve seat; 121. Discharge groove; 122. Injection groove; 13. Valve rod; 14. Valve flap; 141. Liquid blocking cylinder; 15. Outer inclined plate; 2. Impurity treatment assembly; 21. Conical filter plate; 22. Liquid storage tank; 23. First return spring; 24. Liquid inlet plate; 25. Driving rod; 26. Liquid prevention plate; 27. Liquid separation pipe; 28. Hollow disc; 29. Sprinkler head assembly; 291. Sprinkler head cover; 292. Water spraying holes; 293. Spray generator; 211. Micro solenoid valve; 212. Oil storage cavity; 221. Air cylinder; 222. Return spring plate; 223. Air injection rod; 224. Typical cylinder; 225. Air pipe; 226. Expanding typical rod; 227. Driving plate; 231. Arc-shaped passive plate; 232. Active block. Specific embodiments

[0019] Next, the technical solutions in the embodiments of the present application will be clearly described in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art belong to the scope protected by the present application.

[0020] See Figures 1 - 5As shown in the figure, the present invention provides an environment-friendly self-cleaning sealing surface globe valve, which includes: a valve body 1, whose flow channel is arranged in a low-in and high-out manner; a valve seat 12, which is arranged in the internal flow channel of the valve body 1 and has a hollow structure as a whole. A drainage groove is provided on its outer edge. A discharge groove 121 is provided on one side of the valve seat 12 and the valve body 1. The discharge groove 121 is communicated with the drainage groove. When the pipeline liquid flows through the environment-friendly self-cleaning sealing surface globe valve, the liquid follows the "low-in and high-out" path, flows in from below the valve seat 12, and flows out from above the valve flap 14; a valve stem 13, which is arranged at the upper part of the valve body 1; a valve flap 14, which is arranged at the bottom of the valve stem 13 and above the valve seat 12, and its bottom is inclined along the outside; an outwardly inclined plate 15, which is arranged at the top of the valve seat 12, and its top is inclined along the outside. When the valve is closing, the liquid flow velocity drops suddenly near the valve seat 12, and the impurity particles settle towards the valve seat 12 due to the action of gravity. The inclined bottom surface of the valve flap 14 and the top surface of the outwardly inclined plate 15 form a diversion slope. The settled impurity particles will slide along these two inclined surfaces. The impurity particles on the outwardly inclined plate 15 will enter along the drainage groove in the valve seat 12. Since the bottommost end of the bottom of the valve flap 14 is located in the middle of the drainage groove, the impurity particles on the valve flap 14 can directly slide into the middle of the drainage groove along the drainage groove. The inclined surfaces of the two cooperate with each other to form a diversion slope, so that the settled impurity particles can slide along the slope towards the drainage groove on the outer edge of the valve seat 12. Since the drainage groove is communicated with the discharge groove 121, the impurity particles will finally be discharged from the valve body 1 through the discharge groove 121, and a sealing gasket is provided on its surface. When the valve is completely closed, the valve stem 13 applies downward pressure to tightly press the valve flap 14 against the outwardly inclined plate 15. The sealing gasket on the surface of the outwardly inclined plate 15 deforms under the action of pressure to fill the fine gaps and form a tight sealing structure.

[0021] It should be noted that in order to effectively prevent the liquid in the valve body 1 from flowing back, a micro reverse valve needs to be installed in the discharge groove 121 in the valve body 1. After the globe valve is closed, normally the impurity particles are discharged from the valve body 1 through the discharge groove 121 along with the liquid. However, when the pressure in the pipeline fluctuates or other abnormal situations cause the liquid to flow back, the liquid may re-enter the drainage groove through the discharge groove 121, and then pollute the sealing surfaces of the valve seat 12 and the valve flap 14 again. The reverse valve can automatically close the channel when there is a tendency for the liquid to flow back to prevent this situation from occurring.

[0022] See Figures 5 - 7As shown, the impurity treatment component 2 is arranged inside the valve seat 12 and is used to clean the impurity particles on the contact surface between the inclined outer plate 15 and the valve flap 14. A liquid blocking cylinder 141 that closely adheres to the inside of the valve seat 12 is installed at the bottom of the valve flap 14. The impurity treatment component 2 includes: a conical filter plate 21, the number of which is at least four, the whole is conical in shape, and is symmetrically installed inside the valve body 1; a liquid storage tank 22, which is cylindrical in structure, is opened inside the valve body 1, and corresponds to the conical filter plate 21 one by one. A safety valve is installed at the bottom of the liquid storage tank 22; a first return spring 23, which is installed on the bottom wall of the liquid storage tank 22; a liquid inlet plate 24, which is slidably connected inside the liquid storage tank 22 and is fixedly connected to one end of the first return spring 23. The liquid inlet plate 24 is arranged in a hollow shape, and the return spring is an expansion type, and is used to expand a certain space for the liquid inlet plate 24 inside the liquid storage tank 22 to facilitate the entry and storage of liquid; a driving rod 25, one end of which is slidably connected inside the conical filter plate 21; a liquid blocking plate 26, which is installed at the bottom of the driving rod 25; a liquid distribution pipe 27, which is installed inside the valve body 1, and its water inlet end and the safety valve are connected by a pipeline. Two water outlet ends are arranged inside the liquid distribution pipe 27; a hollow disk 28, which is arranged inside the valve body 1 and is connected to one of the water outlet ends of the liquid distribution pipe 27 through a pipeline; a spray head component 29, which is arranged on the hollow disk 28; a driving component, which is arranged inside the valve body 1 and is used to drive the driving rod 25 to move along the inside of the liquid storage tank 22.

[0023] It should be noted that the safety valve is of the spring type, and uses the elastic force of the spring to balance the pressure of the medium acting on the liquid storage tank 22. When the medium pressure exceeds the pressure value set by the spring, the spring is compressed, the safety valve opens, and the medium is discharged. When the medium pressure drops below the set return seat pressure of the spring, the spring returns to its original state, the safety valve closes, and the medium is prevented from flowing out continuously; The specific working steps are as follows: When the globe valve of this device is in the opening stage, the liquid in the pipeline flows into the valve body 1 from the bottom of the valve seat 12. At this time, at least four symmetrically distributed conical filter plates 21 play an intercepting role. Its conical structure can effectively block impurities such as solid particles, sand grains, and rust in the liquid, and only allows clean liquid to pass through the pores of the filter plate. The filtered liquid enters the liquid inlet plate 24. Since the liquid inlet plate 24 is in a hollow shape, the liquid can smoothly flow into the connected liquid storage tank 22 for storage; First, the bottom of the valve flap 14 closely adheres to the liquid-blocking cylinder 141 of the valve seat 12. During the closing process of the valve, it can effectively prevent the liquid in the valve seat 12 from leaking from the bottom. Then, the driving component starts to work, applying pressure to the driving rod 25. One end of the driving rod 25 is slidably connected inside the conical filter plate 21. Under the action of pressure, the driving rod 25 drives the liquid-blocking plate 26 at the bottom to move downward, precisely blocking the hollow channel of the liquid inlet plate 24 to prevent the liquid in the liquid storage tank 22 from flowing back. At the same time, the driving rod 25 continues to press down, pushing the liquid inlet plate 24 to slide downward against the elastic force of the first return spring 23, so that the liquid in the liquid storage tank 22 is squeezed and the pressure gradually increases. When the pressure reaches the set value of the safety valve, the safety valve automatically opens, and the liquid in the liquid storage tank 22 flows into the liquid distribution pipe 27 through the pipeline. The liquid distribution pipe 27 has two water outlet ends, one of which is connected to the hollow disk 28. The liquid enters the hollow disk 28 through this channel and finally is sprayed by the spray head assembly 29 installed on the hollow disk 28 to comprehensively wash the contact surface between the outward-tilting plate 15 and the valve flap 14, thoroughly removing the residual impurity particles. The conical filter plate 21 initially intercepts impurities during the liquid inflow stage, reducing the impurity content entering the liquid storage tank 22. When the valve is closed, the spray head assembly 29 uses the stored cleaning liquid to perform a secondary flush on the contact surface between the outward-tilting plate 15 and the valve flap 14, forming a double protection, effectively reducing the wear of the impurity particles on the sealing surface, and greatly reducing the risk of scratches and pits on the sealing surface.

[0024] Through the liquid filtration and storage when the valve is opened, and the triggering of the spray cleaning by the driving component when the valve is closed, a fully automated process for impurity cleaning is achieved. Without manual intervention, impurities on the contact surface between the outward-tilting plate 15 and the valve flap 14 can be actively removed during the opening and closing process of the valve. Compared with traditional manual cleaning or passive interception methods, the cleaning efficiency is greatly improved, and the cleanliness of the sealing surface can be guaranteed in real time, effectively avoiding the sealing failure problem caused by impurity accumulation. Moreover, the impurity treatment component 2 is driven to work by the pressure change during the opening and closing process of the valve, without the need for additional power equipment, reducing energy consumption, and conforming to the concept of energy conservation and environmental protection.

[0025] See Figure 6 and Figure 8 As shown, the spray head assembly 29 includes: a spray head cover 291, which is annularly installed on the inner wall of the hollow disk 28, arranged in a long strip shape, and the upper and lower ends of the long strip shape are set as inclined parts. Spray holes 292 are opened inside the inclined parts. The spray holes 292 below the inclined part are arranged along the direction of the outward-tilting plate 15, and the spray holes 292 above the inclined part are arranged along the inclined direction outside the valve flap 14.

[0026] The specific working steps are as follows: When the valve is closed, the driving component causes the liquid in the liquid storage tank 22 to flow into the hollow disc 28 through the liquid distribution pipe 27. Then, the liquid enters the spray head cover 291 annularly installed on the inner wall of the hollow disc 28. The spray head cover 291 is arranged in a long strip shape with inclined parts at both the upper and lower ends. This structural design enables the liquid to flow in the spray head cover 291 and, due to the guiding effect of the inclined parts, can be ejected from the spray holes 292. Among them, the spray holes 292 below the inclined part are arranged along the direction of the outward inclined plate 15. After the liquid is ejected, it can directly impact the surface of the outward inclined plate 15, washing down the impurity particles attached to the outward inclined plate 15. The spray holes 292 above the inclined part are arranged along the inclined direction of the outer side of the valve flap 14. The ejected liquid can flow along the inclined surface of the valve flap 14, cleaning the bottom surface of the valve flap 14 and the gap between the valve flap 14 and the outward inclined plate 15. By utilizing the impact force of the liquid and the scouring force of the flow, the impurity particles on the contact surface are comprehensively removed, ensuring that the sealing surface between the outward inclined plate 15 and the valve flap 14 is clean, and achieving the covering and cleaning of all parts of the sealing surfaces of the valve flap 14 and the outward inclined plate 15.

[0027] See Figure 2 , Figure 8 and Figure 9 As shown, the spray holes 292 of the inclined part are inclined at an angle of sixty degrees along the directions of the outward inclined plate 15 and the valve flap 14.

[0028] The specific working steps are as follows: Through the above settings, the water flow trajectory formed after the liquid is ejected forms a specific angle with the surface of the outward inclined plate 15. This angle enables the water flow to generate sufficient impact force to wash the impurity particles when impacting the surface of the outward inclined plate 15, and at the same time allows the water flow to flow along the inclined surface of the outward inclined plate 15, driving the washed-down impurities to move towards the drainage groove. Similarly, the spray holes 292 inclined at an angle of sixty degrees along the direction of the valve flap 14 eject the water flow to impact the bottom surface of the valve flap 14 at an angle of sixty degrees. The strong impact force can effectively peel off the attached impurities. At the same time, the water flow flows along the inclined surface of the valve flap 14, converging and guiding the impurities to be discharged. This is beneficial to forming a stronger impact force on the impurity particles, making it easier to wash away the stubborn impurities attached to the sealing surface, and can also make the coverage range of the water flow on the sealing surface wider, significantly improving the cleaning efficiency.

[0029] See Figure 8 As shown, a spray generator 293 is installed between the spaced spray head covers 291 of the hollow disc 28.

[0030] The specific working steps are as follows: The atomized liquid generated by the spray generator 293 can evenly cover all corners of the sealing surface, especially the fine gaps and depressions that are difficult for water flow to reach. On the one hand, the mist droplets can penetrate into the tiny gaps between the impurities and the sealing surface, soften and loosen the stubborn impurities, and cooperate with the water flow impact of the water spray holes 292 to more thoroughly remove the impurities, achieving deep cleaning of the sealing surface. On the other hand, the atomized liquid generated by the spray generator 293 forms a thin liquid film on the sealing surface, playing a lubricating role. This liquid film can reduce the water flow, reduce the wear of the sealing surface caused by the cleaning process, and protect the surface quality of the valve flap 14 and the inclined plate 15.

[0031] See Figure 4 and Figure 10 As shown, a spray groove 122 communicating with the drainage groove is provided at the bottom left end of the valve seat 12. The other water outlet end of the liquid distribution pipe 27 is communicated with the spray groove 122, and the bottom wall of the drainage groove is arranged in an inclined manner from left to right.

[0032] The specific working steps are as follows: When the valve is closed, with the cooperation of the impurity treatment component 2, the liquid inside the liquid storage tank 22 is sprayed onto the sealing surfaces of the inclined plate 15 and the valve flap 14 through the nozzle component 29. Another path of the liquid flows into the spray groove 122 from the other water outlet end of the liquid distribution pipe 27. Since the bottom wall of the drainage groove is arranged in an inclined manner from left to right, the liquid sprayed from the spray groove 122 will flow from left to right along the inclined bottom wall in the drainage groove. This liquid flow can drive the residual impurity particles in the drainage groove, making them accelerate and move towards the discharge groove 121, and finally discharged from the valve body 1 through the discharge groove 121, enabling the impurities in the drainage groove to receive an additional driving force. The spraying and flowing of the liquid form an active cleaning of the drainage groove, preventing impurities from accumulating in the drainage groove, effectively preventing the drainage groove from being blocked, ensuring the smoothness of the impurity discharge channel, and continuously maintaining the self-cleaning function of the valve; Moreover, when the valve is opened, the liquid impacts the valve, and according to the inclined arrangement of the drainage groove, the cleaning of the impurity discharge path can be ensured again.

[0033] See Figure 2 and Figure 11 As shown, a pressure sensor is installed at the bottom of the liquid storage tank 22, a micro solenoid valve 211 is installed on one side of the water outlet end of the liquid storage tank 22, and an oil storage cavity 212 connected to the micro solenoid valve 211 is installed inside the valve body 1. One end of the oil storage cavity 212 is provided with an oil injection hole outside the valve body 1.

[0034] The specific working steps are as follows: The liquid in the liquid storage tank 22 is squeezed, and the pressure gradually increases. At this time, the pressure sensor installed at the bottom of the liquid storage tank 22 monitors the internal pressure in real time. When the pressure value exceeds the pre-set threshold, the pressure sensor immediately transmits an electrical signal to the micro solenoid valve 211, triggering the micro solenoid valve 211 to open. The lubricating oil in the oil storage cavity 212 connected to it flows into the liquid storage tank 22 under the action of the pressure difference and mixes with the liquid in the tank. A part of the mixed liquid flows through the liquid separation pipe 27 to the spray head assembly 29 to clean the sealing surfaces of the outward-tilting plate 15 and the valve flap 14 with a liquid flow carrying lubricating oil, and the other part flows to the spray tank 122 to wash the drainage tank. The pressure sensor and the micro solenoid valve 211 form an intelligent control unit, which triggers the lubricating oil delivery only when the pressure in the liquid storage tank 22 reaches the set value and the liquid is about to be discharged for cleaning. The precise control avoids the waste of lubricating oil, and at the same time ensures that an appropriate amount of lubrication can be obtained during each cleaning process, effectively reducing the frictional losses of components such as the valve flap 14 and the outward-tilting plate 15 during the opening and closing processes.

[0035] The lubricating oil in the mixed liquid can soften stubborn impurities, reduce their adhesion to the sealing surface, and cooperate with the water flow to more efficiently remove the impurities, improving the overall cleaning effect. It should be noted that in order to prevent the excessive mixing of lubricating oil and water from generating viscous residues and affecting the cleaning effect, a flow sensor is installed on the lubricating oil delivery pipeline to form a linkage control mechanism with the pressure sensor. When the pressure sensor monitors that the pressure in the liquid storage tank 22 reaches the threshold and triggers the micro solenoid valve 211, the flow sensor monitors the flow rate and flow volume of the lubricating oil in real time and feeds the data back to the control system. If the flow exceeds the preset upper limit, the control system automatically adjusts the opening degree or closing time of the micro solenoid valve 211 to reduce the lubricating oil delivery volume, enabling the lubricating oil and water to maintain an appropriate mixing ratio, avoiding the generation of viscous residues, and ensuring the cleaning effect of the spray head assembly 29 and the spray tank 122 on the sealing surface and the drainage tank.

[0036] The oil injection hole outside the valve body 1 allows the operator to conveniently replenish the lubricating oil into the oil storage cavity 212 after the lubricating oil is consumed, maintaining the continuous and stable operation of the system.

[0037] See Figures 12 - 15As shown in the figure, the impurity treatment component 2 further includes: an air cylinder 221, the number of which is at least two, and symmetrically installed in the valve body 1; a return spring plate 222, which is installed inside the air cylinder 221; an air injection rod 223, which is slidably connected inside the air cylinder 221 and fixedly connected to the return spring plate 222, and the top of the air injection rod 223 is below the driving component; a curved cylinder 224, the number of which is at least two, one of which is installed inside the front end of the valve body 1 and the other is installed inside the rear end of the valve body 1; an air pipe 225, one end of which is at the air outlet end of the air cylinder 221 and the other end of which is installed at the air inlet end of the curved cylinder 224; an expansion curved rod 226, which is slidably connected inside the curved cylinder 224, and one end of the expansion curved rod 226 extends outside the curved cylinder 224; a driving plate 227, the number of which is at least two, one of which is installed on the left side of the hollow disc 28, the hollow disc 28 is rotatably connected to the valve body 1, and the other of which is installed on the right side of the inclined plate 15. One end of the left driving plate 227 and the extended part of the expansion curved rod 226 are fixedly connected, and one end of the right driving plate 227 passes through the valve seat 12 and is fixedly connected to one end of the expansion curved rod 226.

[0038] The specific working steps are as follows: When the driving component is started, the air injection rod 223 is squeezed downward, and the air injection rod 223 drives the return spring plate 222 to move downward inside the air cylinder 221. At this time, the gas in the air cylinder 221 is compressed, and the compressed gas in the front air cylinder 221 enters the left curved cylinder 224 through the air pipe 225, and the gas in the rear air cylinder 221 enters the right curved cylinder 224. As the gas enters the curved cylinder 224, the air pressure inside the cylinder increases, causing the expansion curved rod 226 to extend outward under the action of the internal air pressure. The extension of the expansion curved rod 226 in the left curved cylinder 224 drives the driving plate 227 fixedly connected to it to move, and the movement of the driving plate 227 drives the hollow disc 28 to rotate, and then the spray head component 29 installed on the hollow disc 28 rotates accordingly. Similarly, the extension of the expansion curved rod 226 in the right curved cylinder 224 drives the inclined plate 15 to rotate synchronously through the connected driving plate 227. The movement of the return spring plate 222 in the air cylinder 221 is affected by the return spring. When the driving component stops applying pressure, the return spring plate 222 drives the air injection rod 223 to reset upward under the elastic force of the return spring, and the air cylinder 221 inhales gas again to prepare for the next drive; With the assistance of the above functions, when the spray head component 29 rotates, the water flow and atomized liquid sprayed from the spray holes 292 can cover the sealing surface without dead angles. The rotation of the inclined plate 15 exposes the areas such as corners and gaps that are difficult to reach originally under the cleaning liquid, forming a dynamic all-round cleaning mode, significantly improving the cleaning efficiency and effect. Moreover, the rotational movement increases the contact area and contact time between the cleaning liquid and the sealing surface, improving the cleaning efficiency.

[0039] See Figure 2 、Figure 7 , Figure 12 and Figure 13 As shown in Figure 7 , Figure 12 and Figure 13 , the drive assembly includes: an arc-shaped passive plate 231, the number of which is at least two, and is symmetrically installed on the tops of the drive rod 25 and the air injection rod 223 located at the front and rear ends; an active block 232, which is installed on the top of the valve flap 14 and corresponds to the arc-shaped passive plate 231 one by one.

[0040] The specific working steps are as follows: when the valve needs to be closed, the operator applies pressure by operating the valve stem 13, and the valve stem 13 drives the valve flap 14 to move downward. At the same time, the active block 232 squeezes along the surface of the arc-shaped passive plate 231, driving the arc-shaped passive plate 231 to move downward. On the one hand, the drive rod 25 moves downward, and the liquid-proof plate 26 at the bottom of the drive rod 25 blocks the hollow channel of the liquid inlet plate 24 and simultaneously squeezes the liquid inlet plate 24 to apply pressure. On the other hand, as the arc-shaped passive plate 231 moves downward, the air injection rod 223 drives the reset spring plate 222 to apply pressure downward inside the air cylinder 221, synchronously realizing the transfer of the liquid inside the liquid storage tank 22 and the gas inside the air cylinder 221. The drive assembly closely combines the opening and closing actions of the valve with the operation of the impurity treatment assembly 2. Without an additional power source or a complex control system, only by the up and down movement of the valve flap 14, multiple functions such as the liquid-proof plate 26 blocking, liquid extrusion and spraying, the rotation of the nozzle assembly 29, and the rotation of the outward-tilting plate 15 can be achieved simultaneously, simplifying the equipment structure and not consuming additional energy, which conforms to the concept of energy conservation and environmental protection; When the globe valve is opened, the spring potential energy of the reset spring plate 222 is released, driving the arc-shaped passive plate 231 to move upward. The upward movement of the arc-shaped passive plate 231 causes the drive rod 25 to move upward passively, and the liquid-proof plate 26 connected to the drive rod 25 disengages from the liquid inlet plate 24. At this time, the hollow channel of the liquid inlet plate 24 is unblocked, and the liquid in the pipeline enters through the valve seat 12, is filtered by the conical filter plate 21, and then flows into the liquid inlet plate 24 and is stored in the liquid storage tank 22, preparing for the cleaning work when the valve is closed next time.

[0041] The working principle of an environment-friendly self-cleaning sealing surface globe valve provided by the present invention is as follows: The first step: when the valve is opened, the liquid flows through the "low-in and high-out" flow channel of the valve body 1, flows in from below the valve seat 12, the conical filter plate 21 intercepts impurities, and the clean liquid enters the liquid storage tank 22 through the liquid inlet plate 24. At this time, the reset spring plate 222 is reset inside the air cylinder 221, and the air cylinder 221 inhales gas; Step 2: Operate the valve stem 13 to drive the valve disc 14 to move downward, the active block 232 on the top of the valve disc 14 pushes the arc-shaped passive plate 231, and the driving rod 25 moves downward accordingly, and the liquid-proof plate 26 blocks the liquid inlet plate 24 channel, and at the same time squeezes the liquid inlet plate 24 to pressurize the liquid in the liquid storage tank 22. When the pressure reaches the set value of the safety valve, the liquid flows into the liquid distribution pipe 27, and the liquid in the liquid distribution pipe 27 enters the nozzle assembly 29 through the hollow disk 28. The water spray hole 292 on the inclined part of the nozzle cover 291 sprays at an angle of degrees to wash the outer inclined plate 15 and the sealing surface of the valve disc 14; Step 3: Another path of liquid from the liquid dispensing tube 27 flows into the injection groove 122 , and the impurities in the drainage groove are flushed to the discharge groove 121 for discharge by utilizing the inclined bottom wall of the drainage groove. Step 4: At the same time, the gas injection rod 223 moves downward to compress the gas in the gas cylinder 221, and the gas enters the curved cylinder 224 through the gas pipe 225, pushing the expansion curved rod 226 to extend, driving the driving plate 227 to make the nozzle assembly 29 and the outward plate 15 rotate synchronously, thereby enhancing the cleaning effect. Step 5: When the pressure in the liquid storage tank 22 exceeds the threshold, the pressure sensor triggers the micro solenoid valve 211, and the lubricating oil in the oil storage chamber 212 flows into the liquid storage tank 22 and mixes with the liquid to improve the cleaning and lubrication effects.

[0042] The embodiments of the present application are described above in conjunction with the accompanying drawings. In the absence of conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The present application is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the guidance of the present application, ordinary technicians in this field can also make many forms without departing from the purpose of the present application and the scope of protection of the claims, all of which are within the protection of the present application.

Claims

1. An environment-friendly self-cleaning sealing surface globe valve, characterized in that , including: Valve body (1); Valve seat (12), which is arranged in the internal flow channel of the valve body (1). A drain groove is provided on its outer edge. A discharge groove (121) is provided on one side of the valve seat (12) and the valve body (1). The discharge groove (121) is communicated with the drain groove; Valve stem (13), which is arranged at the upper part of the valve body (1); Valve flap (14), which is arranged at the bottom of the valve stem (13) and above the valve seat (12). Its bottom is inclined along the outside, and the bottommost end of its bottom is located in the middle of the drain groove; Outward-tilting plate (15), which is arranged at the top of the valve seat (12). Its top is inclined along the outside, and a sealing gasket is provided on its surface; Impurity treatment component (2), which is arranged in the valve seat (12) and is used to clean the impurity particles on the contact surface between the outward-tilting plate (15) and the valve flap (14).

2. The environmentally friendly self-cleaning sealing surface globe valve according to claim 1, characterized in that, A liquid-blocking cylinder (141) that closely adheres to the inside of the valve seat (12) is installed at the bottom of the valve flap (14). The impurity treatment component (2) includes: Conical filter plates (21), the number of which is at least four. The whole is conical and symmetrically installed in the valve body (1); Liquid storage tank (22), which is in a cylindrical structure. It is arranged in the valve body (1) and corresponds to the conical filter plates (21) one by one. A safety valve is installed at the bottom of the liquid storage tank (22); First return spring (23), which is installed on the bottom wall of the liquid storage tank (22); Liquid inlet plate (24), which is slidably connected inside the liquid storage tank (22) and fixedly connected to one end of the first return spring (23). The liquid inlet plate (24) is arranged in a hollow shape; Drive rod (25), one end of which is slidably connected inside the conical filter plate (21); Liquid-proof plate (26), which is installed at the bottom of the drive rod (25); Liquid distribution pipe (27), which is installed inside the valve body (1), and its water inlet end and the safety valve are connected by a pipeline; Hollow disc (28), which is arranged inside the valve body (1) and is connected to the first water outlet end of the liquid distribution pipe (27) by a pipeline; Spray head assembly (29), which is arranged on the hollow disc (28); Drive assembly, which is arranged inside the valve body (1) and is used to drive the drive rod (25) to move inside the liquid storage tank (22).

3. The environmentally friendly self-cleaning sealing surface globe valve according to claim 2, wherein The spray head assembly (29) includes: Spray head cover (291), which is annularly installed on the inner wall of the hollow disc (28). It is arranged in a long strip shape, and the upper and lower ends of the long strip shape are set as inclined parts. Spray holes (292) are provided inside the inclined parts. The spray holes (292) below the inclined part are arranged along the direction of the outward-tilting plate (15), and the spray holes (292) above the inclined part are arranged along the inclined direction of the outside of the valve flap (14).

4. An environment-friendly self-cleaning sealing surface globe valve according to claim 3, characterized in that, The spray holes (292) of the inclined part are inclined at an angle of sixty degrees along the directions of the outward-tilting plate (15) and the valve flap (14).

5. An environment-friendly self-cleaning sealing surface globe valve according to claim 3, characterized in that, A spray generator (293) is installed between the spaced spray head covers (291) of the hollow disc (28).

6. The environmentally friendly self-cleaning sealing surface globe valve according to claim 2, characterized in that, A spray groove (122) communicated with the drain groove is provided at the bottom left end of the valve seat (12). The second water outlet end of the liquid distribution pipe (27) is connected to the spray groove (122). The bottom wall of the drain groove is arranged in an inclined manner from left to right.

7. An environment-friendly self-cleaning sealing surface globe valve according to claim 2, characterized in that, A pressure sensor is installed at the bottom of the liquid storage tank (22). A micro solenoid valve (211) is installed on one side of the water outlet end of the liquid storage tank (22). An oil storage cavity (212) connected to the micro solenoid valve (211) is installed inside the valve body (1). An oil injection hole is installed on the outside of the valve body (1) at one end of the oil storage cavity (212).

8. An environment-friendly self-cleaning sealing surface globe valve according to claim 2, characterized in that, The impurity treatment component (2) further includes: Air cylinders (221), the number of which is at least two, and are symmetrically installed inside the valve body (1); A return spring plate (222), which is installed inside the air cylinder (221); An air injection rod (223), which is slidably connected inside the air cylinder (221) and fixedly connected to the return spring plate (222). The top of the air injection rod (223) is below the driving component; Curved cylinders (224), the number of which is at least two. One is installed inside the front end of the valve body (1), and the other is installed inside the rear end of the valve body (1); Air pipes (225), one end of which is at the air outlet end of the air cylinder (221), and the other end is installed at the air inlet end of the curved cylinder (224); An expansion curved rod (226), which is slidably connected inside the curved cylinder (224), and one end of the expansion curved rod (226) extends outside the curved cylinder (224); Driving plates (227), the number of which is at least two. One is installed on the left side of the hollow disk (28), and the hollow disk (28) is rotatably connected to the valve body (1). The other is installed on the right side of the inclined plate (15). One end of the left driving plate (227) is fixedly connected to the extending part of the expansion curved rod (226), and one end of the right driving plate (227) passes through the valve seat (12) and is fixedly connected to one end of the expansion curved rod (226).

9. The environmentally friendly self-cleaning sealing surface globe valve according to claim 2, characterized in that, The driving component includes: Arc-shaped passive plates (231), the number of which is at least two, and are symmetrically installed on the tops of the driving rods (25) and the air injection rods (223) at the front and rear ends; Active blocks (232), which are installed on the top of the valve flap (14) and correspond to the arc-shaped passive plates (231) one by one.

Images