High-sealing-performance valve with sand prevention function

Abstract

The invention relates to the technical field of valve equipment, in particular to a high-sealing-performance valve with a sand prevention function, which comprises a main body assembly and a valve body, a valve core is mounted on the inner wall of the valve body, a driving motor is further arranged at the end part of the valve body, a rotating shaft is arranged at the axis of the driving motor, and the end part of the rotating shaft extends to the inner wall of the valve body and is connected with the valve core; an opening is formed in the outer wall of the valve body, the outer wall of the opening is connected with a water outlet pipe, and a connector is arranged at the end of the water outlet pipe and attached to the outer wall of the valve element to form a water outlet channel; by arranging the matching structure of the reverse thread and the spiral groove in the isolation sleeve, axial conveying force from inside to outside is generated when the rotating shaft rotates, invaded sand and dust are actively pushed out, the'pumping effect 'generated by movement of a shaft rod of a traditional valve is avoided, residual sand and dust are collected through the sand collecting groove, and the sand and dust removal efficiency is improved. And the scraping and sweeping ring which is driven by the rotating shaft and is provided with the elastic scraping blade is used for directionally scraping and sweeping the groove bottom, sand and dust are forcibly pushed to the sand guide opening to be discharged, and the problem of sand and dust deposition and silting is solved.

Description

Technical Field

[0001] This invention relates to the field of valve equipment technology, and in particular to a high-sealing valve with sand-proof function. Background Technology

[0002] In harsh environments such as deserts, Gobi, and windy industrial areas, pipeline valves are exposed to high concentrations of sand and dust for extended periods. External sand and dust infiltrate the valve cavity through gaps in the valve stem seal and valve cover mating surfaces, primarily causing valve jamming, seal wear, and failure. Existing sand-proofing technologies are mostly passive, such as adding dust covers, using multiple packing seals, or O-ring seals. While these methods have some effect, they suffer from a long-overlooked technical problem: for valves requiring frequent opening, closing, or adjustment, such as three-way switching valves, the reciprocating or rotating motion of the valve stem creates a pumping effect with the static seal, actively drawing sand and dust adhering to the valve stem surface deep into the sealing gaps, accelerating seal wear and ultimately creating sand intrusion channels. In other words, the sand-proofing effect of traditional static seals is significantly reduced by the movement of the valve stem.

[0003] Furthermore, even if a small amount of sand and dust has intruded into the valve cover area, the existing structure lacks a mechanism to actively expel or isolate it during normal valve operation, causing sand and dust to accumulate at the base of the valve stem, forming a continuous source of abrasive wear. Summary of the Invention

[0004] In view of the problems existing in the prior art, the present invention is proposed.

[0005] To solve the above technical problems, the present invention provides the following technical solution: a high-sealing valve with sand prevention function, which includes a main component, including a valve body, a valve core installed on the inner wall of the valve body, a drive motor provided at the end of the valve body, a rotating shaft provided at the shaft center of the drive motor, and the end of the rotating shaft extending to the inner wall of the valve body and connected to the valve core. The valve body has an opening on its outer wall and a water outlet pipe is connected to the outer wall of the opening. The end of the water outlet pipe is provided with a connector and the connector is attached to the outer wall of the valve core to form a water outlet channel. The valve body is also provided with a mounting seat at the end and the mounting seat is used to fix the valve core. The drive motor is provided with a connecting shell at its end, and the connecting shell is provided with a sealing component at its end.

[0006] As a preferred embodiment of the high-sealing valve with sand-proof function described in this invention, the valve core has an outlet on its outer wall, a first sealing ring is provided at the end of the valve core, the valve core is installed on the inner wall of the inner cavity of the valve body and fixed by the mounting seat, a fourth sealing ring is provided on the inner wall of the mounting seat and the end of the fourth sealing ring is squeezed by the end of the valve body.

[0007] As a preferred embodiment of the high-sealing valve with sand-proof function described in this invention, the water outlet pipe is located on the outer wall of the valve body and is connected to the inner cavity through an opening. The end of the water outlet pipe is provided with a connector and the outer wall of the connector is attached to the outer wall of the valve core. The outer wall of the connector is provided with an internal groove and the inner wall of the internal groove is provided with a sealing ring.

[0008] As a preferred embodiment of the high-sealing valve with sand-proof function described in this invention, the outer wall of the connector is further provided with a second sealing ring and the second sealing ring is attached to the inner wall of the opening, and the outer wall of the water outlet pipe is further provided with a third sealing ring and the third sealing ring is attached to the inner wall of the connector.

[0009] As a preferred embodiment of the high-sealing valve with sand-proof function described in this invention, the sealing component includes a mounting shell with a groove on the outer wall of the mounting shell, and a connecting shell is also provided at the end of the drive motor. The outer wall of the connecting shell is provided with a buckle, and the buckle cooperates with the groove.

[0010] As a preferred embodiment of the high-sealing valve with sand-proof function described in this invention, the mounting housing is further provided with an isolation sleeve, the isolation sleeve is sleeved on the outer wall of the rotating shaft and the end of the isolation sleeve is also provided with a base, the end of the base is provided with a third sealing ring and the base is installed on the inner wall of the mounting port opened at the end of the valve body.

[0011] As a preferred embodiment of the high-sealing valve with sand-proof function described in this invention, the outer wall of the rotating shaft is provided with a reverse thread and the reverse thread cooperates with the spiral groove provided on the inner wall of the isolation sleeve. The reverse thread and the spiral groove form a dynamic isolation cavity. The end of the spiral groove is provided with a sand collection groove, and the outer wall of the sand collection groove is arrayed with sand guide ports.

[0012] As a preferred embodiment of the high-sealing valve with sand-proof function described in this invention, the outer wall of the rotating shaft is further provided with a collar and the outer wall of the collar is further provided with a scraping ring, the inner wall of the collar is provided with an installation groove and the inner wall of the installation groove is provided with a locking tooth, the end face of the locking tooth is further provided with a first elastic element, and the end of the locking tooth is provided on the outer wall of the ratchet tooth opened on the inner wall of the scraping ring.

[0013] As a preferred embodiment of the high-sealing valve with sand-proof function described in this invention, the end face of the scraper ring is provided with a first inclined surface and the end of the scraper ring is also provided with an elastic scraper.

[0014] As a preferred embodiment of the high-sealing valve with sand-proof function described in this invention, the isolation sleeve is further provided with a flexible sealing ring located at the end of the scraper ring, and the end face of the flexible sealing ring is provided with a second inclined surface, which is attached to the end of the elastic scraper.

[0015] The beneficial effects of this invention are as follows: By setting a matching structure of reverse thread and spiral groove inside the isolation sleeve, this application generates an axial conveying force from the inside to the outside when the shaft rotates, actively pushing the intruding sand and dust outward, avoiding the "pumping effect" caused by the shaft movement of traditional valves, and realizing the first level of active sand prevention. The residual sand and dust is collected by the sand collection trough, and the bottom of the trough is directionally scraped by the scraping ring driven by the shaft and equipped with elastic scraper, forcibly pushing the sand and dust to the sand guide port for discharge, solving the problem of sand and dust deposition and siltation, forming a second level of sand prevention guarantee with self-cleaning ability. Through the multi-redundant static seal composed of the first sealing ring at the valve core end, the sealing ring and the second sealing ring at the connector, and the third sealing ring at the installation port, in coordination with the dynamic sand prevention mechanism, the static sealing reliability of the valve at each connection interface is ensured while actively blocking sand, thereby achieving a significant improvement in overall sealing performance and service life in the windy and sandy environment. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the overall structure of a high-sealing valve with sand-proof function according to the present invention; Figure 2 This is a schematic diagram of the connection structure between the water outlet pipe and the connector in this invention; Figure 3 This is a schematic diagram of the modified connection between the valve body and the outlet pipe in this invention; Figure 4 This is a schematic diagram showing the positional relationship between the connector and the sealing ring in this invention; Figure 5 This is a schematic diagram showing the connection between the connecting shell and the mounting shell in this invention; Figure 6 This is a schematic diagram of the overall structure of the isolation sleeve in this invention; Figure 7 This is a side sectional view of the isolation sleeve in this invention; Figure 8 This is an exploded view of the internal structure of the isolation sleeve in this invention; Figure 9This is a schematic diagram showing the positional relationship of the collars in this invention; Figure 10 For the present invention Figure 9 Enlarged schematic diagram of the structure at point A in the middle.

[0018] Reference numerals: 100, main component; 101, valve body; 1011, inner cavity; 1012, opening; 1013, through hole; 1014, mounting port; 102, valve core; 1021, outlet; 1022, first sealing ring; 103, outlet pipe; 1031, connector; 1032, connection port; 1033, internal groove; 1034, sealing ring; 1035, second sealing ring; 1036, third sealing ring; 104, mounting base; 1041, fourth sealing ring; 105, drive motor; 1051, rotating shaft; 1052, reverse thread; 1053, connecting shell; 1054, snap-fit; 1055, dynamic isolation chamber; 201. Mounting shell; 2011. Groove; 202. Isolation sleeve; 2021. Spiral groove; 2022. Sand collection groove; 2023. Sand guide port; 2024. Base; 2025. Third sealing ring; 203. Collar; 2031. Mounting groove; 2032. Clamping tooth; 2033. First elastic element; 204. Scraper ring; 2041. Ratchet; 2042. First inclined surface; 205. Elastic scraper; 206. Flexible sealing ring; 2061. Second inclined surface. Detailed Implementation

[0019] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0020] Many specific details are set forth in the following description in order to provide a full understanding of the invention. However, the invention may also be practiced in other ways different from those described herein, and those skilled in the art can make similar extensions without departing from the spirit of the invention. Therefore, the invention is not limited to the specific embodiments disclosed below.

[0021] Secondly, the term "an embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places throughout this specification does not necessarily refer to the same embodiment, nor is it a single embodiment or an embodiment selectively excluded from other embodiments. Example 1

[0022] Reference Figures 1-5 This is the first embodiment of the present invention, which provides a high-sealing valve with sand-proof function.

[0023] Specifically, the main component 100 includes a valve body 101, a valve core 102 installed on the inner wall of the valve body 101, a drive motor 105 provided at the end of the valve body 101, a rotating shaft 1051 provided at the shaft center of the drive motor 105, and the end of the rotating shaft 1051 extends to the inner wall of the valve body 101 and is connected to the valve core 102. The valve body 101 has an opening 1012 on its outer wall and a water outlet pipe 103 is connected to the outer wall of the opening 1012. The end of the water outlet pipe 103 is provided with a connector 1031, which fits against the outer wall of the valve core 102 and forms a water outlet channel. The end of the valve body 101 is also provided with a mounting seat 104, which is used to fix the valve core 102. The drive motor 105 is provided with a connecting shell 1053 at its end, and the connecting shell 1053 is provided with a sealing component at its end.

[0024] The main component 100 serves as the core load-bearing structure of the valve. The valve body 101 provides the overall mounting base, and the valve core 102, as the control core for fluid flow, is installed at a preset mounting position on the inner wall of the valve body 101. When it is necessary to control the opening and closing of the valve or adjust the fluid flow, the drive motor 105 located at the end of the valve body 101 is activated. The drive motor 105 outputs power and transmits it to the rotating shaft 1051 at its axis. The rotating shaft 1051 rotates under the drive of the drive motor 105. Since the end of the rotating shaft 1051 extends to the inner wall of the valve body 101 and is fixedly connected to the valve core 102, the rotation of the rotating shaft 1051 directly drives the valve core 102 to move synchronously, realizing the position adjustment of the valve core 102 inside the valve body 101, preparing for fluid flow.

[0025] The opening 1012 on the outer wall of the valve body 101 serves as a fluid inlet and outlet channel. The outlet pipe 103 communicates with the interior of the valve body 101 through this opening 1012 to discharge fluid from the valve body 101. The connector 1031 at the end of the outlet pipe 103 remains in contact with the outer wall of the valve core 102. When the valve core 102 moves to a preset position under the drive of the rotating shaft 1051, the contact area between the connector 1031 and the valve core 102 forms a closed outlet channel, ensuring that fluid can only enter the outlet pipe 103 through this channel. The mounting seat 104 at the end of the valve body 101 serves to fix and limit the valve core 102. After the valve core 102 completes its position adjustment, the mounting seat 104 restricts the valve core 102 from undergoing unexpected displacement, ensuring the stability of the outlet channel and preventing fluid leakage or failure to switch on / off due to valve core loosening.

[0026] The connecting shell 1053 at the end of the drive motor 105 provides an installation carrier for the sealing component. The connecting shell 1053 is fixed to the end of the drive motor 105 by a preset assembly method, and the end of the connecting shell 105 has a reserved installation position for the sealing component. After the sealing component is installed at the end of the connecting shell 1053, it forms a sealing fit with the corresponding mounting surface of the valve body 101, preventing external sand and dust from entering the valve through the connection gap between the drive motor 105 and the valve body 101, and preventing sand and dust from contacting moving parts such as the rotating shaft 1051 and the valve core 102, thus ensuring the smooth movement of the components.

[0027] It should be noted that in this application, Figure 1 and Figure 3 Although both are high-sealing valves with sand-proof functions, their specific constructions differ. Figure 1 During installation, the outlet pipe 103 and connector 1031 are first connected together. Then, during subsequent installation, connector 1031 is inserted into the opening 1012 on the outer wall of valve body 101, allowing connector 1031 to fit against the outer wall of valve body 102. Connector 1031 is then screwed into the opening 1012 to secure it as a single unit. Figure 3 In this product, the valve body 101 and the outlet pipe 103 are integrally welded together. The connector 1031 is directly installed inside the outlet pipe 103 and fits against the outer wall of the valve core 102. During installation, the connector 1031 is first placed into the valve body 101, and then the connector 1031 is installed to both sides to fix it in the outlet pipe 103. When installing the valve core 102, the valve core 102 is placed directly from the bottom of the valve body 101 so that the connector 1031 fits against the outer wall of the valve core 102.

[0028] The integrated welded structure of the valve body 101 and the outlet pipe 103 avoids the sealing gap at the opening in the split connection, reducing the path of sand and dust intrusion from the connection gap. At the same time, the connector 1031 is built into the inner cavity 1011, and the double sealing of the sealing ring 1034 with the valve core 102 and the outlet pipe 103 improves the sealing reliability. In addition, the built-in installation method is compatible with the welding manufacturing process of the valve body, which solves the defect of traditional cast metal valves that cannot achieve insert sealing due to structural limitations. Example 2

[0029] Reference Figures 1-5 This is the second embodiment of the present invention, which is implemented based on the previous embodiment.

[0030] Specifically, the valve core 102 has an outlet 1021 on its outer wall, and a first sealing ring 1022 is provided at the end of the valve core 102. The valve core 102 is installed on the inner wall of the inner cavity 1011 opened in the inner wall of the valve body 101 and is fixed by the mounting seat 104. A fourth sealing ring 1041 is provided on the inner wall of the mounting seat 104, and the end of the fourth sealing ring 1041 is squeezed by the end of the valve body 101.

[0031] Among them, the outlet 1021 is a through channel machined on the outer wall of the valve core 102, providing a dedicated flow path for fluid to be discharged from the valve core 102 to the outlet pipe 103; the first sealing ring 1022 is an elastic sealing component, fixed to a preset mounting position at the end of the valve core 102, used to fill the mating gap between the valve core 102 and the mounting seat 104; the inner cavity 1011 is a receiving space machined on the inner wall of the valve body 101, providing a mounting and movement carrier for the valve core 102; the mounting seat 104 is a fixing structure at the end of the valve body 101, used to limit the axial and radial displacement of the valve core 102.

[0032] The function of the first sealing ring 1022 is to block fluid leakage from the gap between the end of the valve core 102 and the mounting seat 104, and at the same time to prevent external sand and dust from entering the mating surface between the valve core 102 and the inner cavity 1011 through the gap; the function of the mounting seat 104 is to ensure the stability of the valve core 102 during operation, to avoid displacement caused by fluid impact or the transmission of the rotating shaft 1051, and to ensure that the outlet 1021 can be accurately connected to the outlet pipe 103; the outlet 1021 is to guide the fluid in the valve body 101 in a concentrated manner, so that the fluid flows along a preset path and avoids sealing failure caused by turbulence.

[0033] After the valve core 102 is embedded in the inner cavity 1011, the mounting seat 104 presses and fixes the valve core 102 from the end, so that the valve core 102 is in close contact with the inner wall of the inner cavity 1011; at this time, the first sealing ring 1022 is squeezed between the end of the valve core 102 and the valve body 101. The valve body 101 squeezes the first sealing ring 1022, causing the first sealing ring 1022 to deform at the top position of the valve core 102, completely filling the gap between the two to prevent the medium inside the valve body 101 from flowing out of the gap. And when installing the valve core 102, by pressing the valve body 101 and the mounting seat 104 together... 04. The valve body 101 is screwed in and fixed. At this time, the bottom of the valve body 101 touches the fourth sealing ring 1041 on the inner wall of the mounting base 104. As the screw is fixed, the fourth sealing ring 1041 is further deformed, completing the seal between the valve body 101 and the mounting base 104. When the drive motor 105 drives the valve core 102 to rotate to the conduction position, the water outlet 1021 is just aligned with the port of the water outlet pipe 103. Furthermore, by adjusting the angle of rotation of the valve core 102 inside the valve body 101, the opening and closing size of the water outlet 1021 on the outer wall of the valve core 102 and the opening of the water outlet pipe 103 are adjusted to achieve precise fluid discharge.

[0034] Preferably, the water outlet pipe 103 is located on the outer wall of the valve body 101 and is connected to the inner cavity 1011 through the opening 1012. The end of the water outlet pipe 103 is provided with a connector 1031 and the outer wall of the connector 1031 is attached to the outer wall of the valve core 102. The outer wall of the connector 1031 is provided with an internal groove 1033 and the inner wall of the internal groove 1033 is provided with a sealing ring 1034.

[0035] In this design, after the outlet pipe 103 is fixed to the valve body 101 through the opening 1012, the arc-shaped outer wall of the connector 1031 is tightly fitted with the outer circular surface of the valve core 102. The sealing ring 1034 is a groove plug-type sealing ring. After being embedded in the built-in groove 1033, its outer surface is slightly higher than the contact surface of the connector 1031. When the connector 1031 is fitted with the valve core 102, the sealing ring 1034 is squeezed and deformed, completely filling the tiny gap between them. When the valve core 102 rotates, the sealing ring 1034 and the outer wall of the valve core 102 maintain dynamic contact, which does not affect the movement of the valve core 102 and can continuously seal, preventing fluid from leaking from the contact surface.

[0036] Preferably, the outer wall of the connector 1031 is also fitted with a second sealing ring 1035 and the second sealing ring 1035 is attached to the inner wall of the opening 1012, and the outer wall of the water outlet pipe 103 is also provided with a third sealing ring 1036 and the third sealing ring 1036 is attached to the inner wall of the connector 1031.

[0037] When the connector 1031 is inserted into the opening 1012, the second sealing ring 1035 is pressed between the outer wall of the connector 1031 and the inner wall of the opening 1012, completely covering the mating gap between them. It forms a double seal with the sealing ring 1034. The sealing ring 1034 seals the mating surface of the connector 1031 and the valve core 102, while the second sealing ring 1035 seals the mating surface of the connector 1031 and the opening 1012. These two sealing lines are independent yet work synergistically, significantly improving sealing reliability. The third sealing ring 1036 on the outer wall of the outlet pipe 103 is attached to the inner wall of the connector 1031 at the other end. The end of the outlet pipe 103 is connected to the connector 1031 by threads. When the threads are rotated and fixed, the outer wall of the outlet pipe 103 squeezes the third sealing ring 1036, causing it to deform on the inner wall of the connector 1031 due to the pressure of the outlet pipe 103. This improves the sealing performance of the outlet pipe 103 and prevents the medium inside the valve body 101 from flowing out from the connection between the connector 1031 and the outlet pipe 103. Example 3

[0038] Reference Figures 5-10 This is the third embodiment of the present invention, which is implemented based on the previous embodiment.

[0039] Specifically, the sealing component includes a mounting shell 201 with a groove 2011 on its outer wall, and a connecting shell 1053 is provided at the end of the drive motor 105. The connecting shell 1053 has a buckle 1054 on its outer wall and the buckle 1054 cooperates with the groove 2011.

[0040] Among them, the mounting shell 201 is the outer bearing shell of the sealing component, which provides installation space for the internal isolation, scraping and sealing parts, and the groove 2011 is an annular groove machined on the outer wall of the mounting shell 201, which is used to cooperate with the buckle 1054 for positioning.

[0041] During assembly, the mounting shell 201 is aligned with the mounting position of the connecting shell 1053 and pushed in. The buckle 1054 is elastically deformed by the pressure of the mounting shell 201. When the groove 2011 moves to the position of the buckle 1054, the buckle 1054 resets and snaps into the groove 2011, thus fixing the mounting shell 201 and the connecting shell 1053. During disassembly, the buckle 1054 is pressed to disengage it from the groove 2011, and the mounting shell 201 can be pulled out, which greatly improves the convenience of maintenance of the sealing components.

[0042] Preferably, the mounting housing 201 is further provided with an isolation sleeve 202, which is sleeved on the outer wall of the rotating shaft 1051 and a base 2024 is provided at the end of the isolation sleeve 202. A third sealing ring 2025 is provided at the end of the base 2024 and the base 2024 is installed on the inner wall of the mounting port 1014 opened at the end of the valve body 101.

[0043] Among them, the isolation sleeve 202 is a tubular protective component sleeved on the outside of the rotating shaft 1051, and is made of wear-resistant rigid material; the base 2024 is an annular fixing structure at the end of the isolation sleeve 202, and is integrally formed with the isolation sleeve 202; the third sealing ring 2025 is an elastic sealing component fixed at the end of the base 2024, and is made of weather-resistant and wear-resistant rubber; the mounting port 1014 is an annular mounting hole machined at the end of the valve body 101, and its inner diameter is adapted to the outer diameter of the base 2024.

[0044] The isolation sleeve 202 is fitted on the outer wall of the rotating shaft 1051 to prevent sand and dust in the external environment from directly contacting the rotating shaft 1051. At the same time, the third sealing ring 2025 is installed in the gap between the sealing base 2024 and the mounting port 1014 to prevent sand and dust from entering the valve body through the gap.

[0045] The outer wall of the rotating shaft 1051 is provided with a reverse thread 1052, and the reverse thread 1052 cooperates with the spiral groove 2021 provided on the inner wall of the isolation sleeve 202. The reverse thread 1052 and the spiral groove 2021 form a dynamic isolation cavity 1055. The end of the spiral groove 2021 is provided with a sand collection groove 2022, and the outer wall of the sand collection groove 2022 is arrayed with sand guide ports 2023.

[0046] Among them, the reverse thread 1052 is a spiral protrusion machined on the outer wall of the rotating shaft 1051. When the rotating shaft 1051 rotates in the normal working direction, it can generate an axial conveying effect towards the external environment. The spiral groove 2021 is a spiral groove machined on the inner wall of the isolation sleeve 202. It is perfectly matched with the pitch and direction of the reverse thread 1052. The dynamic isolation cavity 1055 is the annular space formed between the reverse thread 1052 and the spiral groove 2021. It is the annular gap between the inner wall of the isolation sleeve 202 and the top diameter of the reverse thread 1052. The core function of the cooperation between the reverse thread 1052 and the spiral groove 2021 is to use the rotation of the rotating shaft to generate a directional axial conveying force, pushing the sand and dust that have entered the dynamic isolation cavity 1055 from the inside side of the valve body to the outside side, reversing the sand and dust intrusion trend caused by the "pumping effect".

[0047] When the shaft 1051 rotates in the normal working direction, the reverse thread 1052 meshes with the spiral groove 2021, forming an axial conveying force to the outside in the dynamic isolation chamber 1055. After external sand enters the dynamic isolation chamber 1055 through the gap, it is captured by the axial conveying force and moves along the spiral groove 2021 to the outside of the isolation sleeve 202. Most of the sand is discharged through the reverse thread 1052, but a small part of the sand will still enter the sand collection trough 2022 below. The sand in the sand collection trough 2022 is discharged to the outside through the sand guide port 2023.

[0048] The outer wall of the rotating shaft 1051 is also provided with a collar 203 and a scraping ring 204 is also fitted on the outer wall of the collar 203. The inner wall of the collar 203 is provided with an installation groove 2031 and a retaining tooth 2032 is installed on the inner wall of the installation groove 2031. The end face of the retaining tooth 2032 is also provided with a first elastic element 2033. The end of the retaining tooth 2032 is located on the outer wall of the ratchet 2041 opened on the inner wall of the scraping ring 204.

[0049] Among them, the collar 203 is an annular connector fixed to the outer wall of the rotating shaft 1051 and rotates synchronously with the rotating shaft 1051. The scraping ring 204 is an annular component sleeved on the outside of the collar 203 and rotates inside the rotating shaft 1051 under the influence of the collar 203.

[0050] Mounting groove 2031 is a groove machined on the inner wall of collar 203 for mounting tooth 2032 and first elastic element 2033; tooth 2032 is a movable transmission tooth for transmitting rotational force; first elastic element 2033 is a component that provides elastic pressure for maintaining the engagement of tooth 2032 and ratchet 2041.

[0051] The collar 203 is installed on the outer wall of the rotating shaft 1051 and rotates synchronously with the rotating shaft 1051. The retaining tooth 2032 is installed in the mounting groove 2031. The first elastic element 2033 applies continuous elastic pressure to the retaining tooth 2032, so that the end of the retaining tooth 2032 always fits against the tooth surface of the ratchet 2041. When the rotating shaft 1051 rotates clockwise, the retaining tooth 2032 pushes the scraping ring 204 to rotate synchronously through meshing with the ratchet 2041. If the retaining tooth 2032 or the ratchet 2041 is slightly worn, the first elastic element 2033 will push the retaining tooth 2032 forward to maintain effective meshing and ensure that the rotational power of the scraping ring 204 remains stable. When the rotating shaft 1051 rotates counterclockwise, the inclined surface of the ratchet 2041 abuts against the outer surface of the retaining tooth 2032, causing it to retract into the mounting groove 2031. At this time, the scraping ring 204 is in a stationary state.

[0052] The engagement of the locking teeth 2032 and the ratchet teeth 2041 ensures that the scraping ring 204 rotates only in one direction inside the isolation sleeve 202.

[0053] The end face of the scraping ring 204 is provided with a first inclined surface 2042 and the end of the scraping ring 204 is also provided with an elastic scraper 205.

[0054] When a small amount of sand enters the sand collection trough 2022, it falls below the scraping ring 204 through the first inclined surface 2042. Simultaneously, the scraping ring 204 rotates synchronously under the influence of the collar 203. The elastic scraper 205 adheres tightly to the bottom and side wall of the sand collection trough 2022 due to its own elastic tension. During the rotation, it generates a scraping force on the sand in the trough, loosening and scraping the attached sand away from the trough wall. When the collar 203 rotates counterclockwise, the contact between the elastic scraper 205 and the bottom of the sand collection trough 2022 keeps the scraping ring 204 stationary, ensuring that the scraping ring 204 rotates in one direction and scrapes the sand inside the sand collection trough 2022. The loosened sand is quickly moved to the sand outlet 2023 under the pushing action of the elastic scraper 205, ensuring smooth sand discharge.

[0055] Preferably, the isolation sleeve 202 is further provided with a flexible sealing ring 206 located at the end of the scraping ring 204, and the end face of the flexible sealing ring 206 is provided with a second inclined surface 2061 and the second inclined surface 2061 is attached to the end of the elastic scraper 205.

[0056] The flexible sealing ring 206 is fixed inside the isolation sleeve 202 by an interference fit, and the end of the elastic scraper 205 is tightly attached to the second inclined surface 2061 under its own elasticity. When the scraper ring 204 rotates, the end of the elastic scraper 205 slides dynamically along the second inclined surface 2061, which does not affect the rotation of the scraper ring 204, and can continuously block extremely fine sand and dust from entering through the gap, further improving the reliability of the sandproof seal.

[0057] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. A high-sealing valve with sand-proof function, characterized in that: include: The main component (100) includes a valve body (101), a valve core (102) is installed on the inner wall of the valve body (101), and a drive motor (105) is also provided at the end of the valve body (101). A rotating shaft (1051) is provided at the center of the drive motor (105), and the end of the rotating shaft (1051) extends to the inner wall of the valve body (101) and is connected to the valve core (102). The valve body (101) has an opening (1012) on its outer wall and a water outlet pipe (103) is connected to the outer wall of the opening (1012). The end of the water outlet pipe (103) is provided with a connector (1031) and the connector (1031) fits against the outer wall of the valve core (102) to form a water outlet channel. The end of the valve body (101) is also provided with a mounting seat (104) and the mounting seat (104) is used to fix the valve core (102). The drive motor (105) is provided with a connecting shell (1053) at its end, and the connecting shell (1053) is provided with a sealing component at its end.

2. The high-sealing valve with sand-proof function as described in claim 1, characterized in that: The valve core (102) has an outlet (1021) on its outer wall. The valve core (102) is also provided with a first sealing ring (1022) at its end. The valve core (102) is installed on the inner wall of the inner cavity (1011) opened in the inner wall of the valve body (101) and is fixed by the mounting seat (104). The mounting seat (104) is provided with a fourth sealing ring (1041) on its inner wall, and the end of the fourth sealing ring (1041) is squeezed by the end of the valve body (101).

3. The high-sealing valve with sand-proof function as described in claim 2, characterized in that: The water outlet pipe (103) is located on the outer wall of the valve body (101) and is connected to the inner cavity (1011) through the opening (1012). The end of the water outlet pipe (103) is provided with a connector (1031) and the outer wall of the connector (1031) is attached to the outer wall of the valve core (102). The outer wall of the connector (1031) is provided with an internal groove (1033) and the inner wall of the internal groove (1033) is provided with a sealing ring (1034).

4. The high-sealing valve with sand-proof function as described in claim 3, characterized in that: The outer wall of the connector (1031) is also fitted with a second sealing ring (1035), and the second sealing ring (1035) is attached to the inner wall of the opening (1012). The outer wall of the water outlet pipe (103) is also provided with a third sealing ring (1036), and the third sealing ring (1036) is attached to the inner wall of the connector (1031).

5. The high-sealing valve with sand-proof function as described in claim 4, characterized in that: The sealing component includes a mounting shell (201) and the outer wall of the mounting shell (201) is provided with a groove (2011). The end of the drive motor (105) is also provided with a connecting shell (1053). The outer wall of the connecting shell (1053) is provided with a buckle (1054) and the buckle (1054) cooperates with the groove (2011).

6. The high-sealing valve with sand-proof function as described in claim 5, characterized in that: An isolation sleeve (202) is also provided inside the mounting housing (201). The isolation sleeve (202) is sleeved on the outer wall of the rotating shaft (1051), and a base (2024) is provided at the end of the isolation sleeve (202). A third sealing ring (2025) is provided at the end of the base (2024), and the base (2024) is installed on the inner wall of the mounting port (1014) opened at the end of the valve body (101).

7. The high-sealing valve with sand-proof function as described in claim 6, characterized in that: The outer wall of the rotating shaft (1051) is provided with a reverse thread (1052), and the reverse thread (1052) cooperates with the spiral groove (2021) provided on the inner wall of the isolation sleeve (202). The reverse thread (1052) and the spiral groove (2021) form a dynamic isolation cavity (1055). The end of the spiral groove (2021) is provided with a sand collection groove (2022), and the outer wall of the sand collection groove (2022) is arrayed with sand guide ports (2023).

8. The high-sealing valve with sand-proof function as described in claim 7, characterized in that: The outer wall of the rotating shaft (1051) is also provided with a collar (203) and a scraping ring (204) is also sleeved on the outer wall of the collar (203). The inner wall of the collar (203) is provided with an installation groove (2031) and a locking tooth (2032) is installed on the inner wall of the installation groove (2031). The end face of the locking tooth (2032) is also provided with a first elastic element (2033). The end of the locking tooth (2032) is located on the outer wall of the ratchet (2041) opened on the inner wall of the scraping ring (204).

9. The high-sealing valve with sand-proof function as described in claim 8, characterized in that: The end face of the scraping ring (204) is provided with a first inclined surface (2042), and the end of the scraping ring (204) is also provided with an elastic scraper (205).

10. The high-sealing valve with sand-proof function as described in claim 9, characterized in that: The isolation sleeve (202) is also provided with a flexible sealing ring (206) inside, and the flexible sealing ring (206) is located at the end of the scraping ring (204). The end face of the flexible sealing ring (206) is provided with a second inclined surface (2061), and the second inclined surface (2061) is attached to the end of the elastic scraper (205).

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