A spherical sealing structure arrow check valve and method thereof

Abstract

The application discloses a spherical sealing structure arrow check valve and a method thereof, and belongs to the technical field of check valves. The check valve mechanism is provided with a closing and driving mechanism. The check valve mechanism comprises a water outlet part, a valve body and a check assembly arranged in the valve body. A plurality of dirt cleaning assemblies are arranged on the check assembly. A water passing cavity is arranged in the valve body. A dirt collecting groove is arranged below the inner wall of the water passing cavity. When the arrow valve core is pushed away by liquid pressure, the arrow valve core can rotate by cooperating with the executing assembly through the arc-shaped groove. The dirt cleaning assembly rotates along the inner wall of the water passing cavity, so that the mud and sand attached to the water passing cavity can be loosened or directly separated, the operation of pre-removing part of the mud and sand is facilitated, the problem that the effective flow gap is reduced due to the long-term accumulation of the mud and sand, thereby affecting the water flow, is reduced, and an independent cleaning power source such as a motor and a hydraulic executing mechanism does not need to be additionally arranged.

Description

Technical Field

[0001] This invention relates to the field of check valve technology, and in particular to an arrow-shaped check valve with a spherical sealing structure and its method. Background Technology

[0002] An arrow-shaped check valve is a valve structure that relies on the pressure of the medium to move the arrow-shaped valve core relative to the valve seat to open and close the flow channel. It also uses the valve core to reset and prevent backflow when the medium pressure decreases or reverse flow occurs. It can be used in applications involving the transport of fluids containing slurry, sand, or other solid particles. However, when continuously transporting slurry-containing fluids, existing arrow-shaped check valves allow slurry and sand particles to pass through the flow gap formed around the valve core. Especially during equipment shutdown, low-flow-rate operation, and restarting after shutdown, the fluid's sand-carrying capacity decreases, causing some slurry and sand particles to easily adhere to and deposit on the inner wall of the valve body and in the flow area around the valve core. As operating time increases, these deposits gradually accumulate, potentially reducing the effective flow gap, increasing local flow velocity and flow resistance, and hindering the normal reciprocating motion of the valve core. This increases the likelihood of valve core jamming and exacerbates local erosion by causing sand-containing fluid to concentrate and pass through a small local gap for extended periods. Existing technologies typically reduce the probability of mud and sand deposition and blockage by increasing the flow gap and improving the flow channel shape. However, there is still a lack of structures that can actively clean mud and sand that have already adhered to or deposited inside the valve body with normal valve opening and closing. At the same time, if the cleaned or loosened mud and sand cannot be collected and discharged in time, it may redeposit during low flow rates or shutdown. In addition, if a mud discharge channel that is always open is set, mud may enter the mud discharge area in reverse when the valve is closed or the medium flows in reverse.

[0003] To address the above problems, this invention proposes a spherical sealing structure arrow-shaped check valve and its method. Summary of the Invention

[0004] The purpose of this invention is to address the problem that after use, some mud and sand particles easily adhere to and deposit on the inner wall of the valve body and in the flow area around the valve core of existing arrow-shaped check valves. This can lead to a reduction in the effective flow gap, an increase in local flow velocity and flow resistance, and can also hinder the normal reciprocating motion of the valve core. Existing technologies typically reduce the probability of mud and sand deposition and blockage by increasing the flow gap and improving the flow channel shape. However, there is still a lack of a structure that can actively clean the mud and sand that has already adhered or deposited inside the valve body during normal valve opening and closing. At the same time, if the cleaned or loosened mud and sand cannot be collected and discharged in time, it may redeposit at low flow rates or during shutdown. In addition, if a mud discharge channel is set that is always open, mud may flow back into the mud discharge area when the valve is closed or the medium flows in reverse. Therefore, this invention proposes an arrow-shaped check valve with a spherical sealing structure and its method.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: A spherical sealing structure arrow-shaped check valve includes a check valve mechanism, wherein the check valve mechanism is provided with a closing and driving mechanism; The check valve mechanism includes a water outlet, a valve body, and a check assembly disposed in the valve body. The check assembly is provided with multiple cleaning components. The valve body has a water passage chamber inside, and a sludge collection groove is provided below the inner wall of the water passage chamber. The water outlet has multiple water outlets. The closing and driving mechanism includes a channel opening and closing component, a driving component, and an execution component. The driving component is connected to the channel opening and closing component and the check component. When the check component is open, the check component can drive the channel opening and closing component to open a single water outlet below the water outlet section through the driving component. When the check component is closed, the channel opening and closing component automatically closes the single water outlet below the water outlet section.

[0006] Preferably, the check valve assembly includes a valve seat, a sealing ring, and an arrow-shaped valve core. The valve seat and the sealing ring are both fixedly connected in the valve body, and the arrow-shaped valve core protrudes from the middle of the valve seat.

[0007] Preferably, the end of the arrow-shaped valve core away from the valve seat is configured as a spherical structure, and the inner edge of the sealing ring away from the valve seat is configured as a spherical ring surface adapted to the spherical structure at one end of the arrow-shaped valve core, with a sealing ball ring provided in the spherical ring surface.

[0008] Preferably, the cleaning component includes a guide rail seat, which is fixedly connected to the arrow-shaped valve core and slidably connected to the scraper. The scraper overlaps with the inner wall of the water passage cavity, and scraper blocks overlap on both sides of the scraper. Two scraper blocks are fixedly connected to the guide rail seat.

[0009] Preferably, the drive assembly includes a drive shaft and a seat. The drive shaft extends through the seat and is fixedly connected to the arrow-shaped valve core. A ball bearing plate is sleeved on the drive shaft. A second spring is fixedly connected between the ball bearing plate and the seat. The second spring is sleeved outside the drive shaft. The ball bearing plate abuts against the arrow-shaped valve core under the elastic force of the second spring. The seat is fixedly connected to the water outlet, and the water outlet is fixedly connected to the valve body.

[0010] Preferably, the drive shaft has a straight groove and an arc groove. The two ends of the arc groove are connected to the straight groove. A stop block is fixedly connected to the straight groove. The stop block is located at the end of the arc groove near the end of the straight groove, and the side of the stop block away from the straight groove is a beveled surface.

[0011] Preferably, the channel opening and closing assembly includes a mounting sleeve, which is fixedly connected to the hole seat. An adjusting rod is slidably connected in the mounting sleeve. A first spring is fixedly connected between one end of the adjusting rod and the mounting sleeve. The first spring is sleeved outside the adjusting rod, and the end of the adjusting rod near the ball plate abuts against the ball plate.

[0012] Preferably, the other end of the adjusting rod is fixedly connected to an inclined block, and the two ends of the inclined block are respectively slidably engaged with two sets of inclined rails. Each set of inclined rails consists of two rails. The two inclined rails are fixedly connected to the trough cover. Two guide grooves are opened on one side of the trough cover. The two guide grooves are slidably connected to two guide bars, and the guide bars are fixedly connected inside the water outlet.

[0013] Preferably, the actuating component includes a rod sleeve, which is fixedly connected to the hole seat. A movable rod is slidably connected in the rod sleeve. A third spring is fixedly connected between one end of the movable rod and the rod sleeve. The third spring is sleeved outside the movable rod. The other end of the movable rod is an arc surface and slides in cooperation with a straight groove and an arc groove.

[0014] A method for using an arrow-shaped check valve with a spherical sealing structure includes the following steps: S1. After the liquid enters through the left end of the valve body, the liquid pressure pushes the arrow-shaped valve core and the sealing ring apart. The arrow-shaped valve core drives the second spring to deform through the ball plate, and at the same time drives the transmission shaft to move. The arc surface of the movable rod is blocked by the stop block and enters the arc groove. It cooperates with the arc groove to drive the transmission shaft and the arrow-shaped valve core to rotate. After rotation, the movable rod enters the left end of the straight groove. The rotation of the arrow-shaped valve core drives the scraper to rotate, so that the scraper can clean the mud and sand on the inner wall of the water passage. Some of the mud and sand can enter the sludge collection tank with the scraping of the scraper. Since the arrow-shaped valve core is not fully open, the liquid flows slowly at this time, which can carry away the remaining mud and sand. The mud and sand can also be deposited into the sludge collection tank by gravity. S2. When the arrow-shaped valve core moves the adjusting rod through the ball plate, the adjusting rod causes the first spring to deform. At the same time, the adjusting rod causes the two trough covers to separate through the cooperation between the inclined block and the inclined rail, and opens the water outlet below the water outlet. At this time, the arrow-shaped valve core is fully open, and the liquid pressure is at its maximum and is released instantly, quickly carrying away the mud and sand in the sludge collection tank. The liquid is finally discharged through the right end of the valve body. S3. When the liquid pressure decreases or reverses, the second spring drives the arrow-shaped valve core and the drive shaft to reset via the ball plate. The arrow-shaped valve core fits tightly with the sealing ring to complete the liquid check action. At the same time, the arc surface of the movable rod moves linearly along the straight groove. When the movable rod passes the inclined surface of the stop block, the inclined surface pushes the movable rod to move, causing the third spring to deform. When the movable rod passes the stop block, the third spring drives the movable rod to reset and be located at the right end of the straight groove. At the same time, the first spring drives the adjusting rod to reset, so that the inclined block and the inclined rail cooperate to drive the groove cover to close the outlet below the water outlet.

[0015] Compared with the prior art, the present invention provides an arrow-shaped check valve with a spherical sealing structure and a method thereof, which has the following beneficial effects: 1. The spherical sealing structure arrow-shaped check valve and its method, when the arrow-shaped valve core is pushed open by liquid pressure, the arrow-shaped valve core can rotate through the arc groove and cooperate with the actuator to achieve the rotation of the arrow-shaped valve core. Meanwhile, the cleaning component rotates along the inner wall of the water passage cavity, so that the mud and sand attached to the water passage cavity can be loosened or directly removed, which is convenient for the operation of pre-removing some mud and sand. This helps to reduce the problem of the effective flow gap shrinking due to long-term accumulation of mud and sand, which affects the water flow. Moreover, there is no need to configure an additional motor, hydraulic actuator or other independent cleaning power source.

[0016] 2. The spherical sealing structure arrow-shaped check valve and its method, through the cleaning component, cleans the mud and sand in advance when the arrow-shaped valve core is still in the opening section and middle section, so that the heavier mud and sand can still collect downward in the collection tank. When the arrow-shaped valve core drives the channel opening and closing component through the ball plate to directly open the outlet below the outlet section, the opening degree of the arrow-shaped valve core is at its maximum, and the accumulated liquid pressure can be released instantly and directly carry away the mud and sand in the collection tank, reducing the residue of mud and sand.

[0017] 3. The spherical sealing structure arrow-shaped check valve and its method, through the opening of the check component, can drive the cleaning component to loosen the mud and sand attached or deposited in the water passage chamber. Some of the fine mud and sand can be directly carried away by the slow water flow discharged in the early stage of the check component opening, while the remaining mud and sand can be deposited in the collection tank by gravity. As the opening degree of the check component increases, and after the outlet of the water outlet is opened by the drive component and the channel opening and closing component, a larger positive water flow is used to quickly carry out the concentrated mud and sand. Then, the mud and sand are first loosened, then the mud and sand are deposited by the slow liquid flow, and finally the mud and sand are discharged in a segmented sand discharge method by opening the check component to the maximum and opening the sewage discharge channel. This avoids the mud and sand redepositing caused by only sweeping the mud. At the same time, the maximum water flow can quickly carry away the mud and sand, improving the cleaning ability. At the same time, it improves the continuous operation capability and reliability of the spherical sealing structure arrow-shaped check valve in the case of mud and high solid content fluids. Attached Figure Description

[0018] Figure 1 This is a perspective view of an arrow-shaped check valve with a spherical sealing structure proposed in this invention. Figure 2 This is a three-dimensional cross-sectional view of an arrow-shaped check valve with a spherical sealing structure proposed in this invention. Figure 3 This is a perspective view of the valve body cross-section of an arrow-shaped check valve with a spherical sealing structure proposed in this invention. Figure 4This is a three-dimensional cross-sectional view of the check assembly and drive mechanism of the arrow-shaped check valve with a spherical sealing structure proposed in this invention, showing the same closed and driven assembly state. Figure 5 This is a perspective view of the water outlet section of an arrow-shaped check valve with a spherical sealing structure proposed in this invention. Figure 6 This is a three-dimensional cross-sectional view of the drive assembly and channel opening / closing assembly of an arrow-shaped check valve with a spherical sealing structure proposed in this invention. Figure 7 In this invention Figure 6 Enlarged view of point A; Figure 8 This is a perspective view of the drive shaft of an arrow-shaped check valve with a spherical sealing structure proposed in this invention.

[0019] In the diagram: 100, Check valve mechanism; 101, Valve body; 102, Check assembly; 1021, Valve seat; 1022, Arrow-shaped valve core; 1023, Sealing ring; 1024, Sealing ball ring; 103, Water outlet; 104, Water passage chamber; 105, Sludge collection tank; 106, Sludge cleaning assembly; 1061, Guide rail seat; 1062, Scraper; 1063, Scraper blade; 107, Guide bar; 108, Water outlet; 200, Closing and driving mechanism; 201, Channel opening and closing assembly; 20 11. Mounting sleeve; 2012. Adjusting rod; 2013. First spring; 2014. Inclined block; 2015. Inclined rail; 2016. Slot cover; 2017. Guide groove; 202. Drive assembly; 2021. Drive shaft; 2022. Ball bearing plate; 2023. Second spring; 2024. Arc groove; 2025. Hole seat; 2026. Straight groove; 2027. Stop block; 203. Actuating assembly; 2031. Movable rod; 2032. Rod sleeve; 2033. Third spring. Detailed Implementation

[0020] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0021] In the description of this invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0022] Example 1: Refer to Figures 1-8A spherical sealing structure arrow-shaped check valve includes a check valve mechanism 100, in which a closing and driving mechanism 200 is provided; The check valve mechanism 100 includes a water outlet 103, a valve body 101, and a check assembly 102 disposed in the valve body 101. The check assembly 102 includes a valve seat 1021, a sealing ring 1023, and an arrow-shaped valve core 1022. The valve seat 1021 and the sealing ring 1023 are both fixedly connected to the valve body 101. The arrow-shaped valve core 1022 protrudes from the middle of the valve seat 1021. The end of the arrow-shaped valve core 1022 away from the valve seat 1021 is configured as a spherical structure. The inner edge of the sealing ring 1023 away from the valve seat 1021 is configured to correspond to the spherical structure at one end of the arrow-shaped valve core 1022. The fitting ball ring surface has a sealing ball ring 1024. The spherical surface of the arrow-shaped valve core 1022 matches the inner edge spherical surface of the sealing ring 1023, thereby increasing the sealing performance between the arrow-shaped valve core 1022 and the sealing ring 1023. Simultaneously, the elasticity of the sealing ball ring 1024 reduces wear on the arrow-shaped valve core 1022, further improving the sealing effect between the arrow-shaped valve core 1022 and the sealing ring 1023. The check valve assembly 102 is equipped with multiple cleaning components 106, each including a guide rail seat 1061, which is fixedly connected to the arrow-shaped valve core 1022. On the valve core 1022, the guide rail seat 1061 is slidably connected to the scraper 1063. The scraper 1063 is T-shaped near the edge of the guide rail seat 1061, allowing the scraper 1063 to slide with the guide rail seat 1061, ensuring the translational movement of the arrow-shaped valve core 1022 and preventing the scraper 1063 from detaching from the guide rail seat 1061. The scraper 1063 overlaps with the inner wall of the water passage cavity 104, and scraper blocks 1062 overlap on both sides of the scraper 1063. The scraper blocks 1062 can move with the guide rail seat 1061 and generate displacement, which can scrape off the dirt adhering to the surface of the scraper 1063. To reduce the adhesion of mud and sand on the scraper blade 1063, two scraper blocks 1062 are fixedly connected to the guide rail seat 1061. The valve body 101 is provided with a water passage chamber 104 inside. A sludge collection trough 105 is opened below the inner wall of the water passage chamber 104. The sludge collection trough 105 can collect the deposited mud and sand in a concentrated manner. Then, when the arrow-shaped valve core 1022 is opened to the maximum, the mud and sand can be quickly carried away by the strong water flow to avoid residue. Multiple water outlets 108 are opened on the water outlet 103. Liquid can pass through the water passage chamber 104 and the water outlets 108 and be discharged through the right end of the valve body 101. The closing and driving mechanism 200 includes a channel opening and closing component 201, a driving component 202, and an execution component 203. The execution component 203 includes a rod sleeve 2032, which is fixedly connected to the hole seat 2025. A movable rod 2031 is slidably connected in the rod sleeve 2032. A third spring 2033 is fixedly connected between one end of the movable rod 2031 and the rod sleeve 2032. The third spring 2033 can drive one end of the movable rod 2031 to smoothly return to its original position after passing the stop 2027, thereby allowing the movable rod 2031 to smoothly enter the straight groove 2026. The third spring 2033 is sleeved on the outside of the movable rod 2031. The other end of the movable rod 2031 is an arc surface and is connected to the straight groove 2026 and the arc groove 2024. The sliding fit drive assembly 202 includes a drive shaft 2021 and a seat 2025. The drive shaft 2021 passes through the seat 2025 and is fixedly connected to the arrow-shaped valve core 1022. A ball bearing plate 2022 is sleeved on the drive shaft 2021. Multiple balls are arranged on the side of the ball bearing plate 2022 near the arrow-shaped valve core 1022 to reduce resistance when the arrow-shaped valve core 1022 rotates. A second spring 2023 is fixedly connected between the ball bearing plate 2022 and the seat 2025. The elastic force of the second spring 2023 can drive the ball bearing plate 2022 to return to its original position, allowing the ball bearing plate 2022 to drive the arrow-shaped valve core 1022 to fit against the sealing ring 1023, thereby achieving a check valve function. Located outside the drive shaft 2021, the ball plate 2022 abuts against the arrow-shaped valve core 1022 under the elastic force of the second spring 2023. The hole seat 2025 is fixedly connected to the water outlet 103, which is fixedly connected to the valve body 101. The drive shaft 2021 has a straight groove 2026 and an arc groove 2024. The two ends of the arc groove 2024 communicate with the straight groove 2026. A stop block 2027 is fixedly connected to the straight groove 2026. The stop block 2027 is located at one end of the arc groove 2024 near the end of the straight groove 2026, and the side of the stop block 2027 away from the straight groove 2026 is a beveled surface. Through the beveled surface of the stop block 2027, one end of the movable rod 2031 can smoothly move along the stop block 2026. The inclined surface of 7 moves from low to high, allowing the movable rod 2031 to smoothly transition to the right end of the straight groove 2026. The edge of the stop block 2027 corresponding to one end of the arc groove 2024 is perpendicular. When the drive shaft 2021 moves to the right, the movable rod 2031 can smoothly pass through the block block 2027 and enter the arc groove 2024. The drive component 202 is connected to the channel opening and closing component 201 and the check component 102. When the check component 102 is open, the check component 102 can drive the channel opening and closing component 201 to open the single water outlet 108 below the water outlet 103 through the drive component 202. When the check component 102 is closed, the channel opening and closing component 201 automatically closes the single water outlet 108 below the water outlet 103.

[0023] In this embodiment: when the arrow-shaped valve core 1022 is pushed open by liquid pressure, the arrow-shaped valve core 1022 can rotate through the arc groove 2024 and the actuator 203. Meanwhile, the cleaning component 106 rotates along the inner wall of the water passage cavity 104, allowing the mud and sand attached to the water passage cavity 104 to loosen or detach directly. This transforms the mud and sand from a relatively stable sedimentary state to a loose state that is easily carried by the fluid. Thus, there is no need to configure an additional motor, hydraulic actuator, or other independent cleaning power source. The internal cleaning can be completed synchronously using the existing opening and closing action of the arrow-shaped valve core 1022 itself. This helps to reduce the reduction of the effective flow gap caused by long-term accumulation of mud and sand, and reduces the probability of mud and sand causing blockage of the arrow-shaped valve core 1022 and related moving parts. At the same time, it reduces the problem of flow velocity concentration and continuous scouring of local structures by sand-containing fluid caused by the gradual reduction of local flow area, and improves the stability of the arrow-shaped check valve in long-term operation under mud-containing media conditions.

[0024] Example 2: Refer to Figure 6 A spherical sealing structure arrow-shaped check valve includes a channel opening and closing assembly 201. The channel opening and closing assembly 201 includes a mounting sleeve 2011, which is fixedly connected to a bore seat 2025. An adjusting rod 2012 is slidably connected within the mounting sleeve 2011. A first spring 2013 is fixedly connected between one end of the adjusting rod 2012 and the mounting sleeve 2011. The first spring 2013 can drive the adjusting rod 2012 to reset, allowing the inclined block 2014 to generate pressure movement through the inclined surface and the inclined rail 2015. This causes the inclined rail 2015 to drive the two side groove covers 2016 to close, thereby closing the outlet 108 below the outlet section 103. The first spring 2013... The adjusting rod 2012 is sleeved on the outside of the adjusting rod 2012. One end of the adjusting rod 2012 near the ball plate 2022 abuts against the ball plate 2022. The other end of the adjusting rod 2012 is fixedly connected to the inclined block 2014. The two ends of the inclined block 2014 are respectively slidably engaged with two sets of inclined rails 2015. There are two sets of inclined rails 2015. The two inclined rails 2015 are fixedly connected to the tank cover 2016. Two guide grooves 2017 are opened on one side of the tank cover 2016. The two guide grooves 2017 are respectively slidably connected to two guide bars 107. The guide bars 107 can guide the tank cover 2016 so that the tank cover 2016 can move smoothly. The guide bars 107 are fixedly connected inside the water outlet 103.

[0025] In this embodiment: the cleaning component 106 cleans the mud and sand in advance when the arrow-shaped valve core 1022 is still in the early and middle stages of opening, so that the heavier mud and sand can still gather downwards in the collection tank 105. When the arrow-shaped valve core 1022 drives the channel opening and closing component 201 through the ball plate 2022 to directly open the outlet 108 below the outlet section 103, the opening degree of the arrow-shaped valve core 1022 is at its maximum, and the accumulated liquid pressure can be released instantly, and the collected mud and sand can be quickly discharged from the valve body 101, thereby avoiding the problem of insufficient mud and sand discharge due to premature mud discharge when the water flow is weak.

[0026] Example 3: Reference Figures 1-5 A spherical sealing structure arrow-shaped check valve includes a check valve mechanism 100. The check valve mechanism 100 includes a water outlet 103, a valve body 101, and a check assembly 102 disposed in the valve body 101. The check assembly 102 is provided with a plurality of cleaning components 106. The valve body 101 is provided with a water passage chamber 104. A sludge collection groove 105 is opened below the inner wall of the water passage chamber 104. The water outlet 103 is provided with a plurality of water outlets 108. The closing and driving mechanism 200 includes a channel opening and closing component 201, a driving component 202, and an actuating component 203. The driving component 202 is connected to the channel opening and closing component 201 and the check component 102.

[0027] In this embodiment: by opening the check valve component 102, the drive component 202 can be linked to drive the cleaning component 106 to loosen the mud and sand attached to or deposited in the water passage chamber 104. This allows some fine mud and sand to be directly carried away by the slow water flow discharged from the check valve component 102 in the early stage, while the remaining mud and sand can be deposited in the collection tank 105 by gravity. As the opening degree of the check valve component 102 increases, and the outlet 108 of the outlet section 103 is opened by the drive component 202 in conjunction with the channel opening and closing component 201, a larger positive water flow is used to quickly carry out the concentrated mud and sand. This adopts a segmented sand discharge method of first loosening the mud and sand, then using a slow-flowing liquid to allow the mud and sand to settle, and finally using the check valve component 102 to open to the maximum and open the sewage discharge channel. This avoids the mud and sand redepositing caused by simply sweeping the mud. At the same time, the maximum water flow can quickly carry away the mud and sand, improving the cleaning ability. In addition, it improves the continuous operation capability and reliability of the spherical sealing structure arrow check valve under conditions of mud and high solids content fluids.

[0028] A method for using an arrow-shaped check valve with a spherical sealing structure includes the following steps: S1. After the liquid enters through the left end of the valve body 101, the liquid pressure pushes the arrow-shaped valve core 1022 away from the sealing ring 1023. The arrow-shaped valve core 1022 drives the second spring 2023 to deform through the ball plate 2022, which in turn drives the transmission shaft 2021 to move. This causes the arc surface of the movable rod 2031 to be blocked by the stop block 2027 and enter the arc groove 2024. The rod then cooperates with the arc groove 2024 to drive the transmission shaft 2021 and the arrow-shaped valve core 1022 to rotate. After rotation, the movable rod 2031 enters the left end of the straight groove 2026. The arrow-shaped valve core 1022 rotates, driving the scraper 1063 to rotate, so that the scraper 1063 can clean the mud and sand on the inner wall of the water passage chamber 104. Some of the mud and sand can enter the sludge collection tank 105 with the scraping of the scraper 1063. Since the arrow-shaped valve core 1022 is not fully opened, the liquid flows slowly at this time, which can carry away the remaining mud and sand. The mud and sand can also be deposited into the sludge collection tank 105 by gravity. S2. When the arrow-shaped valve core 1022 moves the adjusting rod 2012 through the ball plate 2022, the adjusting rod 2012 causes the first spring 2013 to deform. At the same time, the adjusting rod 2012 drives the two trough covers 2016 to separate through the cooperation between the inclined block 2014 and the inclined rail 2015, and opens the water outlet 108 below the water outlet 103. At this time, the arrow-shaped valve core 1022 is fully open, and the liquid pressure is at its maximum and is released instantly, quickly carrying away the mud and sand in the sludge collection tank 105. The liquid is finally discharged through the right end of the valve body 101. S3. When the liquid pressure decreases or reverses, the second spring 2023 drives the arrow-shaped valve core 1022 and the transmission shaft 2021 to reset via the ball plate 2022. The arrow-shaped valve core 1022 and the sealing ring 1023 are tightly fitted to complete the liquid check action. At the same time, the arc surface of the movable rod 2031 moves linearly along the straight groove 2026. When the movable rod 2031 passes the inclined surface of the stop block 2027, the inclined surface of the inclined surface pushes the movable rod 2031 to move, causing the third spring 2033 to deform. When the movable rod 2031 passes the stop block 2027, the third spring 2033 drives the movable rod 2031 to reset and be located at the right end of the straight groove 2026. At the same time, the first spring 2013 drives the adjusting rod 2012 to reset, so that the inclined block 2014 and the inclined rail 2015 cooperate to drive the groove cover 2016 to close the outlet 108 below the water outlet 103.

[0029] The above are merely preferred embodiments of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A spherical sealing structure arrow-shaped check valve, comprising a check valve mechanism (100), characterized in that, The check valve mechanism (100) is provided with a closing and driving mechanism (200). The check valve mechanism (100) includes a water outlet (103), a valve body (101), and a check assembly (102) disposed in the valve body (101). The check assembly (102) is provided with a plurality of cleaning components (106). The valve body (101) is provided with a water passage chamber (104). A sludge collection groove (105) is provided below the inner wall of the water passage chamber (104). The water outlet (103) is provided with a plurality of water outlets (108). The closing and driving mechanism (200) includes a channel opening and closing component (201), a driving component (202), and an execution component (203). The driving component (202) is connected to the channel opening and closing component (201) and the check component (102). When the check component (102) is open, the check component (102) can drive the channel opening and closing component (201) to open a single water outlet (108) below the water outlet (103) through the driving component (202). When the check component (102) is closed, the channel opening and closing component (201) automatically closes the single water outlet (108) below the water outlet (103).

2. The arrow-shaped check valve with a spherical sealing structure according to claim 1, characterized in that, The check valve assembly (102) includes a valve seat (1021), a sealing ring (1023), and an arrow-shaped valve core (1022). The valve seat (1021) and the sealing ring (1023) are both fixedly connected in the valve body (101), and the arrow-shaped valve core (1022) protrudes from the middle of the valve seat (1021).

3. The arrow-shaped check valve with a spherical sealing structure according to claim 2, characterized in that, The end of the arrow-shaped valve core (1022) away from the valve seat (1021) is configured as a spherical structure, and the inner edge of the sealing ring (1023) away from the valve seat (1021) is configured as a spherical ring surface that matches the spherical structure at one end of the arrow-shaped valve core (1022), and a sealing ball ring (1024) is provided in the spherical ring surface.

4. The arrow-shaped check valve with a spherical sealing structure according to claim 3, characterized in that, The cleaning component (106) includes a guide rail seat (1061), which is fixedly connected to the arrow-shaped valve core (1022). The guide rail seat (1061) is slidably connected to the scraper (1063). The scraper (1063) overlaps with the inner wall of the water passage cavity (104), and scraper blocks (1062) overlap on both sides of the scraper (1063). The two scraper blocks (1062) are fixedly connected to the guide rail seat (1061).

5. The arrow-shaped check valve with a spherical sealing structure according to claim 4, characterized in that, The drive assembly (202) includes a drive shaft (2021) and a seat (2025). The drive shaft (2021) passes through the seat (2025) and is fixedly connected to the arrow-shaped valve core (1022). A ball bearing plate (2022) is sleeved on the drive shaft (2021). A second spring (2023) is fixedly connected between the ball bearing plate (2022) and the seat (2025). The second spring (2023) is sleeved outside the drive shaft (2021). The ball bearing plate (2022) abuts against the arrow-shaped valve core (1022) under the elastic force of the second spring (2023). The seat (2025) is fixedly connected in the water outlet (103), and the water outlet (103) is fixedly connected in the valve body (101).

6. The arrow-shaped check valve with a spherical sealing structure according to claim 5, characterized in that, The drive shaft (2021) has a straight groove (2026) and an arc groove (2024). The two ends of the arc groove (2024) are connected to the straight groove (2026). A stop block (2027) is fixedly connected to the straight groove (2026). The stop block (2027) is located at one end of the arc groove (2024) near the end of the straight groove (2026), and the side of the stop block (2027) away from the straight groove (2026) is a beveled surface.

7. The arrow-shaped check valve with a spherical sealing structure according to claim 6, characterized in that, The channel opening and closing assembly (201) includes a mounting sleeve (2011), which is fixedly connected to the hole seat (2025). An adjusting rod (2012) is slidably connected in the mounting sleeve (2011). A first spring (2013) is fixedly connected between one end of the adjusting rod (2012) and the mounting sleeve (2011). The first spring (2013) is sleeved outside the adjusting rod (2012). The end of the adjusting rod (2012) near the ball plate (2022) abuts against the ball plate (2022).

8. The arrow-shaped check valve with a spherical sealing structure according to claim 7, characterized in that, The other end of the adjusting rod (2012) is fixedly connected to an inclined block (2014). The two ends of the inclined block (2014) are respectively slidably engaged with two sets of inclined rails (2015). Each set of inclined rails (2015) consists of two rails. The two inclined rails (2015) are fixedly connected to the trough cover (2016). Two guide grooves (2017) are opened on one side of the trough cover (2016). The two guide grooves (2017) are slidably connected to two guide bars (107) respectively. The guide bars (107) are fixedly connected inside the water outlet (103).

9. The arrow-shaped check valve with a spherical sealing structure according to claim 8, characterized in that, The actuation component (203) includes a sleeve (2032), which is fixedly connected to the hole seat (2025). A movable rod (2031) is slidably connected in the sleeve (2032). A third spring (2033) is fixedly connected between one end of the movable rod (2031) and the sleeve (2032). The third spring (2033) is sleeved outside the movable rod (2031). The other end of the movable rod (2031) is an arc surface and slides in cooperation with the straight groove (2026) and the arc groove (2024).

10. The method of using the arrow-shaped check valve with a spherical sealing structure according to claim 9, characterized in that, Includes the following steps: S1. After the liquid enters through the left end of the valve body (101), the liquid pressure pushes the arrow-shaped valve core (1022) and the sealing ring (1023) apart. The arrow-shaped valve core (1022) drives the second spring (2023) to deform through the ball plate (2022), and at the same time drives the transmission shaft (2021) to move. This causes the arc surface of the movable rod (2031) to be blocked by the stop block (2027) and enter the arc groove (2024). The arc groove (2024) cooperates with the transmission shaft (2021) and the arrow-shaped valve core (1022) to drive the transmission shaft (2021) and the arrow-shaped valve core (1022). After rotation, the movable rod (2031) enters the left end of the straight groove (2026). The arrow-shaped valve core (1022) rotates, driving the scraper (1063) to rotate, so that the scraper (1063) can clean the mud and sand on the inner wall of the water passage cavity (104). Some mud and sand can enter the sludge collection tank (105) with the scraping of the scraper (1063). Since the arrow-shaped valve core (1022) is not fully opened, the liquid flows slowly at this time, which can carry away the remaining mud and sand. The mud and sand can also be deposited into the sludge collection tank (105) by gravity. S2. When the arrow-shaped valve core (1022) moves the adjusting rod (2012) through the ball plate (2022), the adjusting rod (2012) causes the first spring (2013) to deform. At the same time, the adjusting rod (2012) drives the two trough covers (2016) to separate through the cooperation between the inclined block (2014) and the inclined rail (2015), and opens the water outlet (108) below the water outlet (103). At this time, the arrow-shaped valve core (1022) is fully opened, and the liquid pressure is at its maximum and is released instantly, quickly carrying away the mud and sand in the sludge collection tank (105). The liquid is finally discharged through the right end of the valve body (101). S3. When the liquid pressure decreases or reverses, the second spring (2023) drives the arrow-shaped valve core (1022) and the drive shaft (2021) to reset via the ball plate (2022). The arrow-shaped valve core (1022) fits tightly with the sealing ring (1023) to complete the liquid check action. At the same time, the arc surface of the movable rod (2031) moves linearly along the straight groove (2026). When the movable rod (2031) passes the inclined surface of the stop block (2027), it pushes the movable rod through the inclined surface of the inclined surface. (2031) moves, causing the third spring (2033) to deform. When the movable rod (2031) passes the stop (2027), the third spring (2033) drives the movable rod (2031) to reset and be located at the right end of the straight groove (2026). At the same time, the first spring (2013) drives the adjusting rod (2012) to reset, so that the inclined block (2014) and the inclined rail (2015) cooperate to drive the groove cover (2016) to close the water outlet (108) below the water outlet (103).

Images