Flow-controllable anti-impact ball valve
By introducing a sealing ring and spring structure into the ball valve and using water pressure to drive the sealing ring to separate and reset, the problem of sealing seat damage caused by fluid impact is solved, achieving better sealing effect and ball valve protection.
Patent Information
- Application Number
- CN202422302647.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-20
- Publication Date
- 2025-09-19
- Estimated Expiration
- 2034-09-20
AI Technical Summary
When the existing natural gas ball valve is closed, fluid may enter the gap between the valve core and the valve housing, causing impact on the sealing seat and reducing the sealing effect, especially causing damage to the ball valve when the water flow is large and the water pressure is high.
A flow-controllable and impact-proof ball valve was designed. It adopts a sealing ring and spring structure. When liquid enters the gap, it pushes the sealing ring to separate. When the water pressure decreases, the spring pushes the sealing ring to reset. The driving mechanism drives the valve core to rotate, discharges the liquid in time, reduces the long-term pressure on the sealing ring, and prevents the sealing effect from being reduced.
It effectively reduces the impact of liquid on the sealing ring for a long time, reduces the probability of sealing ring oxidation, improves the sealing effect, and protects the sealing performance of the ball valve.
Smart Images
Figure CN223359960U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of flow regulating valves, in particular to a flow controllable anti-impact ball valve. Background Art
[0002] A flow control valve is a device used to control the flow of fluid in a pipeline. It adjusts the flow rate based on the system's actual needs, achieving precise control of the fluid flow. This valve is widely used in various industrial and civil fluid delivery systems, such as heating systems, air conditioning water systems, chemical, petroleum, pharmaceutical, food processing, and water treatment.
[0003] The patent, published on February 1, 2022, with the publication number CN220646853U, discloses a natural gas ball valve comprising a valve body, a valve core, a valve stem, and a lubrication device with a piston connected to the top of the lubrication device. During operation, if the valve stem becomes inoperable during rotation, the piston can be pressed to compress the oil-absorbing sponge in the lubrication device, which is filled with lubricating oil. The lubricating oil then flows through a conduit into the gap between the valve body and the valve core, flowing from top to bottom along the spherical surface of the valve core. This lubricating oil then lubricates the valve body and the spherical surface of the valve core, reducing the frictional resistance to rotation between the valve body and the valve core and making it easier to rotate the valve core via the valve stem. This effectively solves the problem of natural gas ball valves becoming difficult to rotate during long-term use due to rust or excessive frictional resistance caused by prolonged opening or closing, resulting in difficulty in rotating the valve core via the valve stem to achieve natural on / off switching.
[0004] However, in the natural gas ball valve in the related art, when the ball valve is closed, due to the gap between the valve core and the upper valve body, or the valve core and the lower valve body, when the valve core rotates, the fluid may enter the gap between the valve core and the valve housing, causing the fluid to impact the sealing seat. Under the long-term impact of the fluid, the sealing seat will reduce the sealing effect of the valve core.
[0005] Therefore, it is necessary to provide a flow controllable anti-shock ball valve to solve the above problems. Utility Model Content
[0006] The utility model provides a flow-controllable anti-shock ball valve, which can improve the problem in a water supply system that when the water flow is relatively large, the impact on the ball valve may cause the ball valve to rotate and affect the water flow, and that during peak water use, long-term high water pressure impact may cause damage to the ball valve.
[0007] An embodiment of the present application provides a flow-controllable and impact-proof ball valve, including a valve housing, a valve core, a sealing mechanism, and a driving mechanism. A cavity is provided inside the valve housing, a channel is provided on the valve core, and the valve core is rotatably connected in the cavity. The sealing mechanism includes a sealing ring and a spring, and the sealing ring is slidably connected in the valve housing. The spring is arranged on the sealing ring, one end of the spring abuts against the sealing ring, and the other end of the spring abuts against the valve housing. The driving mechanism is arranged on the valve housing, and the driving mechanism is used to drive the valve core to rotate.
[0008] The above-mentioned technical solution in the embodiment of the present application has at least the following technical effects: in the process of the driving mechanism driving the valve core to rotate, the liquid will flow into the gap between the valve core and the valve housing. When the liquid fills the gap, under the action of water pressure, the sealing ring is pushed to move away from the valve core, so that the sealing ring compresses the spring. At this time, the sealing ring is separated from the valve core, and the liquid between the valve core and the valve housing flows out. After the liquid flows out, the pressure in the gap between the valve core and the valve housing decreases. At this time, the spring pushes the sealing ring to move toward the direction of the valve core, so that the sealing ring abuts against the valve core. Due to the setting of the spring and the sealing ring, the liquid between the valve core and the valve housing can be discharged in time, thereby reducing the probability of the liquid exerting pressure on the sealing ring for a long time, causing the sealing effect of the sealing ring to be reduced.
[0009] In some embodiments, the sealing mechanism further includes a first sealing ring, a groove is provided on the sealing ring, the first sealing ring is arranged on the sealing ring, and the first sealing ring is located in the groove, and the outer peripheral surface of the first sealing ring abuts against the valve housing.
[0010] In some embodiments, the driving mechanism includes a housing, a driving shaft, a handwheel, a connecting seat and a fixing assembly, the housing is arranged on the valve housing, one end of the driving shaft passes through the housing and the valve housing is fixedly connected to the valve core through the connecting seat, the handwheel is arranged on the end of the driving shaft away from the valve core, the fixing assembly is arranged on the housing, and the fixing assembly is used to fix the driving shaft.
[0011] In some embodiments, the fixing assembly includes a valve stem guide pin, a connecting sleeve and a ball head, the connecting sleeve is arranged on the outer shell, a limiting groove and a limiting groove are provided on the drive shaft, a threaded hole is provided on the connecting sleeve, a thread is provided on one end of the valve stem guide pin, the valve stem guide pin is threadedly connected to the connecting sleeve through the threaded hole, and the ball head is arranged on the other end of the valve stem guide pin, and the ball head abuts against the drive shaft.
[0012] In some embodiments, a second sealing ring is further sleeved on the valve stem guide pin, an inner circumference of the second sealing ring is connected to the valve stem guide pin, and an outer circumference of the second sealing ring is in contact with the connecting sleeve.
[0013] In some embodiments, a third sealing ring is further sleeved on the drive shaft, the outer circumference of the third sealing ring abuts against the outer shell, and the inner circumference of the third sealing ring is fixedly connected to the drive shaft.
[0014] In some embodiments, a liquid inlet pipe and a liquid outlet pipe are further provided on the valve housing, and both the liquid inlet pipe and the liquid outlet pipe are connected to the valve housing. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the embodiments or descriptions of the prior art. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.
[0016] Figure 1 A schematic diagram of the overall structure of a flow-controllable anti-shock ball valve provided in an embodiment of the present application;
[0017] Figure 2 A schematic cross-sectional view of a flow-controllable anti-shock ball valve provided in an embodiment of the present application;
[0018] Figure 3 for Figure 2 Enlarged view of part A in the middle;
[0019] Figure 4 for Figure 2 Enlarged view of part B in the middle.
[0020] Among them, the reference numerals in the figures are:
[0021] 1. Valve housing; 11. Cavity; 2. Valve core; 21. Channel; 3. Sealing mechanism; 31. Sealing ring; 311. Groove; 32. Spring; 33. First sealing ring; 4. Driving mechanism; 41. Housing; 42. Driving shaft; 421. Limiting groove; 422. Limiting groove; 43. Handwheel; 44. Connecting seat; 45. Fixing assembly; 451. Stem guide pin; 452. Connecting sleeve; 453. Ball head; 454. Second sealing ring; 5. Third sealing ring; 6. Liquid inlet pipe; 7. Liquid outlet pipe. DETAILED DESCRIPTION
[0022] In order to make the technical problems, technical solutions and beneficial effects to be solved by this application more clearly understood, this application is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this application and are not intended to limit this application.
[0023] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which this application belongs; the terms used herein are for the purpose of describing specific embodiments only and are not intended to limit this application. The terms "including" and "having" and any variations thereof in the specification and claims of this application and the accompanying drawings are intended to cover non-exclusive inclusions.
[0024] It should be noted that when an element is referred to as being “fixed on” or “disposed on” another element, it may be directly on the other element or indirectly on the other element. When an element is referred to as being “connected to” another element, it may be directly connected to the other element or indirectly connected to the other element.
[0025] It should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this application.
[0026] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. Throughout the description of this application, "plurality" means two or more, unless otherwise specifically defined.
[0027] In this application, "and / or" is simply a way to describe the relationship between related objects, indicating that three possible relationships exist. For example, "A and / or B" can mean: A exists alone, A and B exist simultaneously, or B exists alone. Additionally, the character " / " in this document generally indicates that the related objects are in an "or" relationship.
[0028] It should be noted that, in this application, words such as "in some embodiments", "exemplarily", "for example", etc. are used to indicate examples, illustrations or explanations. Any embodiment or design described in this application as "in some embodiments", "exemplarily", "for example" should not be interpreted as being more preferred or more advantageous than other embodiments or designs. Specifically, the use of words such as "in some embodiments", "exemplarily", "for example" is intended to present related concepts in a concrete way, meaning that the specific features, structures or characteristics described in conjunction with the embodiment may be included in at least one embodiment of the present application. The appearance of the above words in various places in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.
[0029] A flow control valve is a device used to control the flow of fluid in a pipeline. It adjusts the flow rate based on the system's actual needs, achieving precise control of the fluid flow. This valve is widely used in various industrial and civil fluid delivery systems, such as heating systems, air conditioning water systems, chemical, petroleum, pharmaceutical, food processing, and water treatment.
[0030] The patent, published on February 1, 2022, with the publication number CN220646853U, discloses a natural gas ball valve comprising a valve body, a valve core, a valve stem, and a lubrication device with a piston connected to the top of the lubrication device. During operation, if the valve stem becomes inoperable during rotation, the piston can be pressed to compress the oil-absorbing sponge in the lubrication device, which is filled with lubricating oil. The lubricating oil then flows through a conduit into the gap between the valve body and the valve core, flowing from top to bottom along the spherical surface of the valve core. This lubricating oil then lubricates the valve body and the spherical surface of the valve core, reducing the frictional resistance to rotation between the valve body and the valve core and making it easier to rotate the valve core via the valve stem. This effectively solves the problem of natural gas ball valves becoming difficult to rotate during long-term use due to rust or excessive frictional resistance caused by prolonged opening or closing, resulting in difficulty in rotating the valve core via the valve stem to achieve natural on / off switching.
[0031] Based on this, in order to improve the problem of a gap between the valve body and the valve core in the related technology, liquid may enter the gap between the valve body and the valve core when the ball valve is switched, impacting the sealing rings on both sides, and the sealing rings may be damaged under long-term impact. The embodiment of the present application provides the following solution.
[0032] Please also refer to Figure 1 and Figure 2An embodiment of the present application provides a flow-controllable and impact-proof ball valve, which includes a valve housing 1, a valve core 2, a sealing mechanism 3, and a driving mechanism 4. A cavity 11 is provided inside the valve housing 1, a channel 21 is provided on the valve core 2, and the valve core 2 is rotatably connected in the cavity 11. The sealing mechanism 3 is arranged in the valve housing 1, and the driving mechanism 4 is arranged on the valve housing 1. The sealing mechanism 3 is used to seal the valve core 2, and the driving mechanism 4 is used to drive the valve core 2 to rotate.
[0033] In some embodiments, please refer to Figures 1 to 3 The sealing mechanism 3 includes a sealing ring 31, a spring 32 and a first sealing ring 33. The sealing ring 31 is slidably connected to the valve housing 1. The spring 32 is arranged on the sealing ring 31. One end of the spring 32 abuts against the sealing ring 31, and the other end of the spring 32 abuts against the valve housing 1. A groove 311 is also provided on the sealing ring 31. The first sealing ring 33 is arranged on the sealing ring 31, and the first sealing ring 33 is located in the groove 311. The outer peripheral surface of the first sealing ring 33 abuts against the valve housing 1.
[0034] With such an arrangement, when a flow-controllable and impact-proof ball valve is working, the driving mechanism 4 drives the valve core 2 to rotate, and the liquid will flow into the gap between the valve core 2 and the valve housing 1. When the liquid fills the gap, under the action of water pressure, the sealing ring 31 is pushed to move away from the valve core 2, so that the sealing ring 31 compresses the spring 32. At this time, the sealing ring 31 is separated from the valve core 2, and the liquid between the valve core 2 and the valve housing 1 flows out. After the liquid flows out, the pressure in the gap between the valve core 2 and the valve housing 1 decreases. At this time, the spring 32 pushes the sealing ring 31 to move in the direction of the valve core 2, so that the sealing ring 31 abuts against the valve core 2. Due to the arrangement of the spring 32 and the sealing ring 31, the liquid between the valve core 2 and the valve housing 1 can be discharged in time, thereby reducing the probability that the liquid will exert pressure on the sealing ring 31 for a long time, causing the sealing effect of the sealing ring 31 to be reduced.
[0035] Since the first sealing ring 33 is further provided on the sealing ring 31 , the probability of liquid flowing between the sealing ring 31 and the valve housing 1 is reduced, thereby reducing the probability of oxidation of the spring.
[0036] In some embodiments, see Figures 1 to 4The driving mechanism 4 includes a housing 41, a driving shaft 42, a handwheel 43, a connecting seat 44 and a fixing assembly 45. The fixing assembly 45 includes a valve stem guide pin 451, a connecting sleeve 452, a ball head 453 and a second sealing ring 454. A limiting groove 421 and a limiting groove 422 are provided on the driving shaft 42. The housing 41 is connected to the valve housing 1 by bolts. One end of the driving shaft 42 passes through the housing 41 and the valve housing 1 and is fixedly connected to the valve core 2 through the connecting seat 44. The handwheel 43 is connected to the end of the driving shaft 42 away from the valve core 2 by bolts. A third sealing ring 5 is also sleeved on the driving shaft 42. The outer circumference of the third sealing ring 5 abuts against the housing 41, and the inner circumference of the third sealing ring 5 is fixedly connected to the driving shaft 42.
[0037] The connecting sleeve 452 is welded to the outer shell 41, and a threaded hole is provided on the connecting sleeve 452. A thread is provided on one end of the valve stem guide pin 451. The valve stem guide pin 451 is threadedly connected to the connecting sleeve 452 through the threaded hole. The ball head 453 is provided on the other end of the valve stem guide pin 451, and the ball head 453 abuts against the drive shaft 42. A second sealing ring 454 is also sleeved on the valve stem guide pin 451. The inner circumference of the second sealing ring 454 is connected to the valve stem guide pin 451, and the outer circumference of the second sealing ring 454 abuts against the connecting sleeve 452.
[0038] With such arrangement, when the hand wheel 43 is turned to drive the drive shaft 42 to rotate, since the lower end of the drive shaft 42 is fixedly connected to the valve core 2 through the connecting seat 44, the valve core 2 rotates synchronously with the drive shaft 42 when the drive shaft 42 rotates. When the valve opening reaches the ideal state, the ball head 453 is abutted against the limiting groove 422 by rotating the valve stem guide pin 451. At this time, the friction reaches the maximum, and the drive shaft 42 is locked in the current position, so that the valve core 2 will not rotate slightly due to liquid impact and affect the flow rate. When the valve opening needs to be changed, the ball head 453 is withdrawn from the limiting groove 422 to the limiting groove 421 by rotating the valve stem guide pin 451. At this time, the valve opening can be freely selected. When the liquid enters the gap between the valve body and the valve core 2, the third sealing ring 5 prevents the liquid from entering the cavity 11 above the connecting seat 44. The second sealing ring 454 is used to prevent the liquid from leaking from the small hole on the shell 41.
[0039] In some embodiments, see Figures 1 to 4 The valve housing 1 is also provided with a liquid inlet pipe 6 and a liquid outlet pipe 7, and both the liquid inlet pipe 6 and the liquid outlet pipe 7 are connected to the valve housing 1.
[0040] The above description is only a preferred embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present application should be included in the scope of protection of the present application.
Claims
1. A flow-controllable anti-shock ball valve, characterized by: The invention comprises a valve housing (1), a valve core (2), a sealing mechanism (3) and a driving mechanism (4); a cavity (11) is provided inside the valve housing (1); a channel (21) is provided on the valve core (2); the valve core (2) is rotatably connected in the cavity (11); the sealing mechanism (3) comprises a sealing ring (31) and a spring (32); the sealing ring (31) is slidably connected in the valve housing (1); the spring (32) is arranged on the sealing ring (31); one end of the spring (32) abuts against the sealing ring (31); the other end of the spring (32) abuts against the valve housing (1); the driving mechanism (4) is arranged on the valve housing (1); and the driving mechanism (4) is used to drive the valve core (2) to rotate.
2. A flow-controllable anti-shock ball valve according to claim 1, characterized in that: The sealing mechanism (3) further comprises a first sealing ring (33), a groove (311) is provided on the sealing ring (31), the first sealing ring (33) is arranged on the sealing ring (31), and the first sealing ring (33) is located in the groove (311), and the outer peripheral surface of the first sealing ring (33) abuts against the valve housing (1).
3. The flow-controllable anti-shock ball valve according to claim 2, characterized in that: The driving mechanism (4) comprises a housing (41), a driving shaft (42), a hand wheel (43), a connecting seat (44) and a fixing assembly (45); the housing (41) is arranged on the valve housing (1); one end of the driving shaft (42) passes through the housing (41) and the valve housing (1) is fixedly connected to the valve core (2) via the connecting seat (44); the hand wheel (43) is arranged on the end of the driving shaft (42) away from the valve core (2); the fixing assembly (45) is arranged on the housing (41); and the fixing assembly (45) is used to fix the driving shaft (42).
4. The flow-controllable anti-shock ball valve according to claim 3, characterized in that: The fixing assembly (45) includes a valve stem guide pin (451), a connecting sleeve (452) and a ball head (453), wherein the connecting sleeve (452) is arranged on the housing (41), a limiting groove (421) and a limiting groove (422) are provided on the driving shaft (42), a threaded hole is provided on the connecting sleeve (452), a thread is provided on one end of the valve stem guide pin (451), the valve stem guide pin (451) is threadedly connected to the connecting sleeve (452) through the threaded hole, and the ball head (453) is arranged on the other end of the valve stem guide pin (451), and the ball head (453) abuts against the driving shaft (42).
5. The flow-controllable anti-shock ball valve according to claim 4, characterized in that: A second sealing ring (454) is also sleeved on the valve stem guide pin (451), the inner circumference of the second sealing ring (454) is connected to the valve stem guide pin (451), and the outer circumference of the second sealing ring (454) is in contact with the connecting sleeve (452).
6. The flow-controllable anti-shock ball valve according to claim 5, characterized in that: A third sealing ring (5) is also sleeved on the driving shaft (42), the outer peripheral surface of the third sealing ring (5) abuts against the outer shell (41), and the inner peripheral surface of the third sealing ring (5) is fixedly connected to the driving shaft (42).
7. The flow-controllable anti-shock ball valve according to claim 1, characterized in that: A liquid inlet pipe (6) and a liquid outlet pipe (7) are also provided on the valve housing (1); both the liquid inlet pipe (6) and the liquid outlet pipe (7) are in communication with the valve housing (1).