Self-cleaning valve structure with flow regulation and cut-off functions
By designing a self-cleaning valve structure, the system utilizes water flow impact to clean scale and residue, solving the problem of traditional regulating valves' difficulty in accurately controlling flow under high pressure. This achieves precise flow regulation and self-cleaning functions, while improving sealing and stability.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- XIAN INT INSTR MEASURE & CONTROL EQUIP
- Filing Date
- 2025-09-10
- Publication Date
- 2026-07-07
AI Technical Summary
Traditional regulating valves are difficult to accurately control small flow rates under high pressure environments and are prone to leaks and blockages, affecting the normal operation of oil injection.
A self-cleaning valve structure with flow regulation and shut-off functions was designed. The valve stem drives the upper and lower alloy plates to move together, and the water flow impact cleans up scale and residue. Combined with sealing rings and high-pressure resistant rubber rings, the sealing performance is enhanced, ensuring accurate flow control and self-cleaning function.
It achieves precise low-flow control under high-pressure environments, avoiding leaks and blockages, extending the service life of valves, and improving sealing performance and structural stability.
Smart Images
Figure CN224469698U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of oil water injection, and more specifically, to a self-cleaning valve structure with flow regulation and shut-off functions. Background Technology
[0002] In the field of oilfield water injection, traditional control valves use an actuator and transmission structure to drive the valve stem to rotate circumferentially within the housing, thereby changing the effective area of the orifice and controlling the flow rate. However, this control valve technology has significant shortcomings in high-pressure environments: firstly, it is difficult to accurately control small flow rates, failing to meet the demand for fine flow regulation under high-pressure conditions; secondly, the valve is prone to leakage during use, affecting the system's sealing and safety, and is also susceptible to blockage, hindering flow regulation and thus affecting the normal operation of the entire oilfield water injection process. This significantly reduces the applicability and reliability of traditional control valves in high-pressure environments, necessitating a superior valve structure to address these deficiencies. Utility Model Content
[0003] The main purpose of this invention is to provide a self-cleaning valve structure with flow regulation and shut-off functions, so as to at least solve the problems of traditional regulating valves in the prior art being unable to accurately control small flow rates when applied to high-pressure environments, and the valves being prone to leakage and blockage.
[0004] To achieve the above objectives, this utility model provides a self-cleaning valve structure with flow regulation and shut-off functions. It is characterized by comprising: a valve stem, with two annular rectangular grooves in the middle shaft section, a square shaft section structure at the top of the valve stem, two evenly distributed first pin holes at the bottom of the valve stem, and a first rectangular groove perpendicular to the first pin holes, the first rectangular groove penetrating the entire lower surface of the valve stem; an upper alloy plate, with two second pin holes on its upper surface, and a second rectangular groove perpendicular to the second pin holes, the second rectangular groove containing two evenly distributed first elliptical guide holes, the first elliptical guide holes penetrating the upper alloy plate, the valve stem and the upper alloy plate being linked through the two first pin holes and the two second pin holes; and a lower alloy plate, with a boss at the bottom, two evenly distributed third pin holes on its lower side, and two second elliptical guide holes perpendicular to the two third pin holes, the two first elliptical guide holes penetrating the second rectangular groove. A third rectangular groove is formed in the middle of the two elliptical guide holes, and the second elliptical guide holes are connected to the outlet flow channel of the valve body; the upper positioning pin consists of two cylinders, which are respectively embedded in the two first pin holes and the second pin hole to ensure that the valve stem and the upper alloy plate are precisely fixed and linked; the lower positioning pin consists of two cylinders, which are respectively embedded in the two third pin holes, and the lower side of the lower positioning pin is locked in the groove of the valve body to restrict the circumferential rotation of the lower alloy plate and achieve positioning with the body; the contact surfaces of the upper alloy plate and the lower alloy plate are horizontal and completely in contact. The valve stem drives the upper alloy plate to squeeze and rotate, so that the effective cross-sectional area of the teardrop-shaped opening formed by the two first elliptical guide holes of the upper alloy plate and the two second elliptical guide holes of the lower alloy plate changes, thereby cleaning scale and residue through water flow impact, and simultaneously achieving flow regulation and self-cleaning.
[0005] Furthermore, a transmission structure is installed at the thin rod at the top of the valve stem. The transmission structure transmits force by cooperating with the square shaft section structure, driving the valve stem to rotate circumferentially, thereby driving the upper alloy plate to rotate.
[0006] Furthermore, the first rectangular groove and the second rectangular groove of the upper alloy sheet are correspondingly arranged to form a medium flow channel.
[0007] Furthermore, the first elliptical guide hole of the upper alloy sheet and the second elliptical guide hole of the lower alloy sheet are matched in shape and size so that the effective cross-sectional area of the formed teardrop-shaped opening can be stably adjusted.
[0008] Furthermore, the upper and lower alloy sheets are made of cold work die steel with a hardness of up to HRC 60.
[0009] Furthermore, sealing rings are installed in the two annular rectangular grooves in the middle section of the valve stem to achieve a seal between the valve stem and the valve body.
[0010] Furthermore, a high-pressure resistant rubber ring is provided on the boss, the cross-sectional shape of which is adapted to the contour of the boss.
[0011] Furthermore, both the second and third rectangular grooves are provided with rounded chamfers.
[0012] This utility model discloses a self-cleaning valve structure with flow regulation and shut-off functions, comprising: a valve stem, the middle section of which has two annular rectangular grooves, the top of which has a square shaft structure, and the bottom of which has two evenly distributed first pin holes. A first rectangular groove is formed perpendicular to the first pin holes and extends through the entire lower surface of the valve stem; an upper alloy plate, the upper surface of which has two second pin holes, and a second rectangular groove perpendicular to the second pin holes. Two first elliptical flow guide holes are evenly distributed within the second rectangular groove and extend through the upper alloy plate. The valve stem and the upper alloy plate are linked through the two first pin holes and the two second pin holes; and a lower alloy plate, the bottom of which has a boss, and two evenly distributed third pin holes on its lower side. Two second elliptical flow guide holes are formed perpendicular to the two third pin holes, and a third rectangular groove is formed between the two second elliptical flow guide holes. It communicates with the outlet flow channel of the valve body; the upper positioning pin consists of two cylinders, which are respectively embedded in the two first pin holes and the second pin hole to ensure precise fixation and linkage between the valve stem and the upper alloy plate; the lower positioning pin consists of two cylinders, which are respectively embedded in the two third pin holes, and the lower side of the lower positioning pin is clamped in the groove of the valve body to restrict the circumferential rotation of the lower alloy plate and achieve positioning with the body; the contact surfaces of the upper alloy plate and the lower alloy plate are horizontal and completely in contact. The valve stem drives the upper alloy plate to squeeze and rotate, so that the effective cross-sectional area of the teardrop-shaped opening formed by the two first elliptical guide holes and the two second elliptical guide holes changes. This allows the scale and residue to be cleaned by water flow impact, while simultaneously achieving flow regulation and self-cleaning. This solves the problems of traditional regulating valves in high-pressure environments being unable to accurately control small flow rates and the valves being prone to leakage and blockage.
[0013] The beneficial effects of this utility model are as follows:
[0014] 1. Precisely achieve low flow control
[0015] The first elliptical guide hole of the upper alloy plate and the second elliptical guide hole of the lower alloy plate are matched in shape and size. The upper alloy plate is rotated by the valve stem, so that the effective cross-sectional area of the teardrop-shaped opening formed by the two can be continuously and stably adjusted. This structural design breaks through the limitation of traditional regulating valves in that they are difficult to precisely control small flow under high pressure conditions, and can meet the stringent requirements for flow accuracy in fields such as oil injection.
[0016] 2. Effectively solves the leakage problem.
[0017] A sealing ring is installed in the annular rectangular groove in the middle of the valve stem to achieve a reliable seal between the valve stem and the housing; the lower alloy plate boss is equipped with a high-pressure resistant rubber ring to further enhance the sealing effect with the housing. The upper and lower alloy plates adopt a horizontal plane fully fit design. Combined with the high strength characteristics of cold work die steel (hardness up to HRC 60), the sealing reliability of the valve under high pressure environment is significantly improved, and leakage is effectively avoided.
[0018] 3. Features a self-cleaning function to prevent clogging.
[0019] When the valve stem drives the upper alloy plate to rotate, the relative position change of the first elliptical guide hole and the second elliptical guide hole will change the water flow path. The impact generated by the high-speed water flow passing through the teardrop-shaped opening can automatically clean the scale and residue on the surface of the alloy plate. The smooth flow channel formed by the first rectangular groove and the second rectangular groove, as well as the rounded chamfer design at the groove, reduces media retention and turbulence, further reducing the risk of blockage.
[0020] 4. Stable structure, suitable for high-voltage environments.
[0021] The upper and lower positioning pins respectively achieve precise positioning of the valve stem and the upper alloy plate, and the lower alloy plate and the housing, ensuring stable transmission without deviation. The four-sided shaft structure and the transmission structure work together to efficiently transmit power and adapt to the load requirements under high pressure. The upper and lower alloy plates made of cold work die steel have excellent wear resistance and pressure resistance, extending the service life of the valve in high-pressure and high-flow-rate media. Attached Figure Description
[0022] The accompanying drawings, which form part of this application, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an undue limitation of the present invention. In the drawings:
[0023] Figure 1 This is a schematic diagram of the overall structure of a self-cleaning valve structure with flow regulation and shut-off functions, which is an optional embodiment of this utility model.
[0024] Figure 2 This is a partial structural diagram of a self-cleaning valve structure with flow regulation and shut-off functions, which is an optional embodiment of the present utility model.
[0025] The above figures include the following reference numerals:
[0026] 10. Valve stem; 11. Square shaft section structure; 12. First pin hole; 13. First rectangular groove; 20. Upper alloy plate; 21. Second pin hole; 22. Second rectangular groove; 23. First elliptical guide hole; 30. Lower alloy plate; 31. Boss; 32. Third pin hole; 33. Second elliptical guide hole; 34. Third rectangular groove; 40. Upper locating pin; 50. Lower locating pin. Detailed Implementation
[0027] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.
[0028] According to an embodiment of the present invention, a self-cleaning valve structure with flow regulation and shut-off functions is provided, such as... Figures 1 to 2As shown, the valve includes: a valve stem 10, an upper alloy plate 20, a lower alloy plate 30, an upper positioning pin 40, and a lower positioning pin 50. The valve stem 10 has two annular rectangular grooves in its middle section, a square shaft structure 11 at its top, and two evenly distributed first pin holes 12 at its bottom. A first rectangular groove 13 is formed perpendicular to the first pin holes 12 and extends through the entire lower surface of the valve stem 10. The upper alloy plate 20 has two second pin holes 21 on its upper surface, and a second rectangular groove 22 is formed perpendicular to the second pin holes 21. Two first elliptical guide holes 23 are evenly distributed within the second rectangular groove 22 and extend through the upper alloy plate 20. The valve stem 10 and the upper alloy plate 20 are connected by the two first pin holes 50. Hole 12 and two second pin holes 21 are linked; the bottom of the lower alloy plate 30 is provided with a boss 31, and two third pin holes 32 are evenly distributed on the lower side. Two second elliptical guide holes 33 are opened perpendicular to the two third pin holes 32. A third rectangular groove 34 is opened in the middle of the two second elliptical guide holes 33, and the second elliptical guide holes 33 are connected to the outlet flow channel of the valve body; the upper positioning pins 40 are two cylinders, and the two upper positioning pins 40 are respectively embedded in the two first pin holes 12 and the two second pin holes 21 to make the valve stem 10 and the upper alloy plate 20 precisely fixed and linked; the lower positioning pins 50 are two cylinders, and the two lower positioning pins 50 are respectively embedded in the two third pin holes 32, and the lower side of the lower positioning pins 50 is stuck in the valve body groove to limit The upper alloy plate 20 and the lower alloy plate 30 are rotated circumferentially to achieve positioning with the housing; wherein, the contact surfaces of the upper alloy plate 20 and the lower alloy plate 30 are horizontal and completely in contact. The valve stem 10 drives the upper alloy plate 20 to rotate by squeezing, so that the effective cross-sectional area of the teardrop-shaped opening formed by the two first elliptical guide holes 23 and the two second elliptical guide holes 33 changes, thereby cleaning scale and residue through water flow impact, and simultaneously achieving flow regulation and self-cleaning. The valve stem 10 drives the upper alloy plate 20 to rotate relative to the lower alloy plate 30 by squeezing, so that the effective cross-sectional area of the teardrop-shaped opening formed by the first elliptical guide hole 23 of the upper alloy plate 20 and the second elliptical guide hole 33 of the lower alloy plate changes, thereby precisely controlling the fluid flow and achieving continuous flow regulation; when When the opening cross-sectional area is zero, the valve can achieve the shut-off function. During the flow regulation process, the fluid forms an impact water flow when passing through the changing teardrop-shaped opening. The impact force of the water flow is used to clean the scale and residue inside the valve (especially the mating surface of the upper alloy plate 20 and the lower alloy plate 30 and the guide hole), reducing the adhesion of impurities and avoiding the impact of scale or residue accumulation on valve performance, thus extending the service life of the valve. The valve stem 10 and the upper alloy plate 20 are precisely fixed and linked by the upper positioning pin 40 to ensure that the two move synchronously and improve the regulation accuracy. The lower positioning pin 50 positions the lower alloy plate 30 and the valve body, restricting its circumferential rotation and ensuring that the position of the lower alloy plate 30 is stable, so that the second elliptical guide hole 33 is always accurately connected to the outlet flow channel of the body.The upper alloy plate 20 and the lower alloy plate 30 have horizontal and fully fitted surfaces, reducing fluid leakage and enhancing structural stability. This avoids adjustment errors or incomplete cleaning caused by loose fit. The boss at the bottom of the lower alloy plate 30, the third rectangular groove 34, and the positioning design with the housing ensure stable assembly with the valve body. The second rectangular groove 22 of the upper alloy plate 20, the third rectangular groove 34 of the lower alloy plate 30, and the through-hole design provide a reasonable flow path for the fluid, reducing fluid resistance, ensuring smooth fluid flow during adjustment and circulation, and reducing energy loss.
[0029] Specifically, two upper positioning pins 40 are respectively embedded into two first pin holes 12 evenly distributed at the bottom of the valve stem 10 and two second pin holes 21 on the upper surface of the upper alloy plate 20, so as to achieve precise fixation and linkage between the valve stem 10 and the upper alloy plate 20; the lower alloy plate 30 is fixed to the housing: two lower positioning pins 50 are respectively embedded into two third pin holes 32 evenly distributed on the lower side of the lower alloy plate 30, and the lower side of the lower positioning pins 50 is locked in the valve housing slot, thereby restricting the circumferential rotation of the lower alloy plate 30 and achieving positioning with the housing; ensuring that the contact surfaces of the upper alloy plate 20 and the lower alloy plate 30 are horizontal and completely in contact; through the square shaft section structure 11 at the top of the valve stem 10 and the transmission structure, force is transmitted to drive the valve stem 10 to rotate circumferentially, thereby causing the upper alloy plate 20 to be squeezed and rotated relative to the lower alloy plate 30. As the upper alloy plate 20 rotates, the effective cross-sectional area of the teardrop-shaped opening formed by the two first elliptical guide holes 23 of the upper alloy plate 20 and the two second elliptical guide holes 33 of the lower alloy plate 30 changes, thereby achieving flow regulation. During the flow regulation process, when the water flows through the teardrop-shaped opening with constantly changing shape and size, it will generate a strong impact. This water flow impact can clean the scale and residue on the surface of the upper alloy plate 20 and the lower alloy plate 30, realizing the self-cleaning function. The first rectangular groove 13 at the bottom of the valve stem 10 perpendicular to the position of the first pin hole 12 is correspondingly set with the second rectangular groove 22 at the position of the upper alloy plate 20 perpendicular to the second pin hole 21, together forming a medium flow channel to ensure that the medium can pass through the valve smoothly. At the same time, the second elliptical guide hole 33 on the lower alloy plate 30 is connected to the outlet flow channel of the valve body, so that the regulated medium can flow out of the valve.
[0030] Furthermore, such as Figure 1 As shown, a transmission structure is installed at the top thin rod of the valve stem 10. The transmission structure transmits force through cooperation with the square shaft section structure 11, driving the valve stem 10 to rotate circumferentially, thereby driving the upper alloy plate 20 to rotate while the lower alloy plate 30 remains fixed. This achieves relative compression and rotational cooperation between the upper alloy plate 20 and the lower alloy plate 30, ensuring efficient and stable transmission, guaranteeing the accuracy and reliability of flow regulation, and adapting to the power transmission requirements under high-pressure conditions.
[0031] Furthermore, such as Figure 1 As shown, the first rectangular groove 13 and the second rectangular groove 22 of the upper alloy sheet 20 are correspondingly arranged to form a medium flow channel, forming a smooth medium flow path, reducing flow resistance, avoiding scaling and blockage caused by medium retention in the channel, and improving the response speed of flow regulation.
[0032] Furthermore, such as Figure 2 As shown, the first elliptical guide hole 23 of the upper alloy sheet 20 and the second elliptical guide hole 33 of the lower alloy sheet 30 are matched in shape and size so that the effective cross-sectional area of the formed teardrop-shaped opening can be stably adjusted, ensuring that the effective cross-sectional area of the teardrop-shaped opening can be stably and continuously adjusted, realizing precise control of small flow rate, and meeting the needs of fine flow rate adjustment under high pressure environment.
[0033] Furthermore, such as Figure 2 As shown, the upper alloy sheet 20 and the lower alloy sheet 30 are made of cold work die steel with a hardness of up to HRC60, which significantly improves the wear resistance and compressive strength of the upper alloy sheet 20 and the lower alloy sheet 30, extends their service life under the impact of high pressure and high flow rate media, and ensures the sealing performance and structural stability of the mating surface.
[0034] Furthermore, such as Figure 1 As shown, sealing rings are installed in the two annular rectangular grooves in the middle section of the valve stem 10 to achieve a seal between the valve stem and the valve body. This effectively seals the valve stem 10 and the valve body, preventing high-pressure media from leaking out through the gap, improving the valve's sealing performance and safety, and adapting to high-pressure working environments.
[0035] Furthermore, such as Figure 1 As shown, a high-pressure resistant rubber ring is provided on the boss 31. Its cross-sectional shape is adapted to the contour of the boss 31, which enhances the sealing effect between the lower alloy sheet 30 and the valve body, withstands the impact of high-pressure media, further prevents leakage, and improves the overall sealing reliability of the valve.
[0036] Furthermore, such as Figure 1 As shown, both the second rectangular groove 22 and the third rectangular groove 34 are provided with rounded chamfers to reduce the turbulence and retention of the medium at the corners of the grooves, reduce the risk of scaling, avoid stress concentration, enhance the fatigue resistance of the groove structure, and extend the service life of the components.
[0037] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.
Claims
1. A self-cleaning valve structure with flow regulation and shut-off functions, characterized in that, include: The valve stem (10) has two annular rectangular grooves in the middle shaft section, a square shaft section structure (11) at the top of the valve stem (10), two evenly distributed first pin holes (12) at the bottom of the valve stem (10), and a first rectangular groove (13) at a position perpendicular to the first pin holes (12), and the first rectangular groove (13) penetrates the entire lower surface of the valve stem (10). The upper alloy plate (20) has two second pin holes (21) on its upper surface and a second rectangular groove (22) perpendicular to the second pin holes (21). Two first elliptical guide holes (23) are evenly distributed in the second rectangular groove (22), and the first elliptical guide holes (23) open through the upper alloy plate (20). The valve stem (10) and the upper alloy plate (20) are linked through the two first pin holes (12) and the two second pin holes (21). The lower alloy sheet (30) has a boss (31) at its bottom and two third pin holes (32) evenly distributed on its lower side. Two second elliptical guide holes (33) are opened at the two third pin holes (32) perpendicular to each other. A third rectangular groove (34) is opened between the two second elliptical guide holes (33), and the second elliptical guide holes (33) are connected to the outlet flow channel of the valve body. Upper positioning pin (40), the upper positioning pin (40) is two cylinders, the two upper positioning pins (40) are respectively embedded in the two first pin holes (12) and the second pin holes (21) so that the valve stem (10) and the upper alloy plate (20) are precisely fixed and linked; The lower positioning pin (50) consists of two cylinders. The two lower positioning pins (50) are respectively embedded in the two third pin holes (32), and the lower positioning pin (50) is clamped in the valve body slot to restrict the circumferential rotation of the lower alloy piece (30) and achieve positioning with the housing. The upper alloy sheet (20) and the lower alloy sheet (30) are in contact with each other on a horizontal plane and are fully in contact. The valve stem (10) drives the upper alloy sheet (20) to rotate and squeeze, so that the effective cross-sectional area of the teardrop-shaped opening formed by the two first elliptical guide holes (23) and the two second elliptical guide holes (33) is changed, thereby cleaning scale and residue through water flow impact, and simultaneously achieving flow regulation and self-cleaning.
2. The self-cleaning valve structure with flow regulation and shut-off functions according to claim 1, characterized in that, A transmission structure is installed at the top thin rod of the valve stem (10). The transmission structure transmits force by cooperating with the square shaft section structure (11) to drive the valve stem (10) to rotate circumferentially, thereby driving the upper alloy plate (20) to rotate.
3. The self-cleaning valve structure with flow regulation and shut-off functions according to claim 1, characterized in that, The first rectangular groove (13) is correspondingly arranged with the second rectangular groove (22) of the upper alloy sheet (20) to form a medium flow channel together.
4. The self-cleaning valve structure with flow regulation and shut-off functions according to claim 1, characterized in that, The first elliptical guide hole (23) of the upper alloy sheet (20) and the second elliptical guide hole (33) of the lower alloy sheet (30) are adapted in shape and size so that the effective cross-sectional area of the formed teardrop-shaped opening can be stably adjusted.
5. A self-cleaning valve structure with flow regulation and shut-off functions according to claim 1, characterized in that, The upper alloy sheet (20) and the lower alloy sheet (30) are made of cold work die steel with a hardness of up to HRC 60.
6. The self-cleaning valve structure with flow regulation and shut-off functions according to claim 1, characterized in that, The valve stem (10) has two annular rectangular grooves in the middle section for installing sealing rings to achieve a seal between the valve stem and the valve body.
7. The self-cleaning valve structure with flow regulation and shut-off functions according to claim 1, characterized in that, The boss (31) is provided with a high-pressure resistant rubber ring, the cross-sectional shape of which is adapted to the contour of the boss (31).
8. The self-cleaning valve structure with flow regulation and shut-off functions according to claim 1, characterized in that, Both the second rectangular groove (22) and the third rectangular groove (34) are provided with rounded chamfers.