High-elastic sealing clamp gate valve
By using a clamp gate valve with a phased sealing and elastic reset design, the sealing failure problem of traditional clamp gate valves is solved, and adaptive deformation and redundant protection under high pressure are achieved, thereby improving the reliability and service life of the seal.
Patent Information
- Application Number
- CN202520496308.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-20
- Publication Date
- 2026-01-02
- Estimated Expiration
- 2035-03-20
AI Technical Summary
The sealing structure of traditional clamp gate valves is prone to sealing failure due to rigid contact, instantaneous impact wear, and insufficient elastic compensation, especially when the medium pressure fluctuates or the valve plate is misaligned.
The system employs a staged sealing design, with the inner ring contacting the outer ring first. This is combined with a wave-shaped metal elastic sheet to provide elastic reset. The hollow structure design of the inner and outer rings is designed to adapt to non-uniform loads. The protrusions and grooves limit the displacement of the inner plate, ensuring reliable sealing.
It reduces instantaneous pressure shocks, extends service life, improves sealing reliability, compensates for wear or machining errors on the sealing surface, and prevents overload deformation and vibration leakage of the sealing ring.
Smart Images
Figure CN223754671U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to the technical field of gate valve, concretely relates to a high elastic sealing's clamp gate valve. BACKGROUND
[0002] In the fluid control field, clamp gate valve is widely used because of convenient installation and reliable sealing. The sealing structure of traditional clamp gate valve adopts single valve plate and fixed sealing ring hard contact design, for example, through valve plate directly compressing sealing ring to realize cut-off.
[0003] However, such structure has the following significant defects: single rigid valve plate is in instantaneous full contact with sealing ring when closing, and lacks pressure buffering mechanism. When medium pressure fluctuates or valve plate has slight deflection, it is easy to cause local sealing to be not strict and cause leakage. SUMMARY
[0004] Therefore, aiming at the above problems, the utility model provides a high elastic sealing's clamp gate valve, solves the problems of sealing failure, instantaneous impact wear and insufficient elastic compensation caused by rigid contact of traditional clamp gate valve.
[0005] To achieve the above purpose, the utility model is realized by the following technical schemes:
[0006] A high elastic sealing's clamp gate valve, including valve body, the valve cover being arranged above the valve body, the support being arranged above the valve cover and the rotating disc being arranged above the support, the rotating rod being arranged in the support, the valve plate being arranged in the valve body, the bottom end of the rotating rod being connected with the valve plate, the valve plate including the shell, the inner plate and the elastic piece, the inner plate and the elastic piece being arranged in the shell, and the elastic piece being used for providing the elastic reset of the inner plate relative to the shell.
[0007] The valve body is provided with a sealing ring, the sealing ring includes coaxially arranged outer ring and inner ring, the outer ring is arranged corresponding to the bottom of the shell, the inner ring is arranged corresponding to the bottom of the inner plate, when the valve plate is pressed down, the bottom of the inner plate first contacts the inner ring, and the bottom of the shell then contacts the outer ring.
[0008] Further, the bottom of the inner plate is arranged protruding from the bottom of the shell, and the protruding height is 1.2-1.5 times the thickness of the inner ring.
[0009] Further, the elastic piece is a wave-shaped metal elastic sheet, and the wave peak spacing gradually decreases along the compression direction.
[0010] Further, the outer ring is uniformly provided with a plurality of first hollows, and the inner ring is uniformly provided with a plurality of second hollows, and each first hollow is larger than each second hollow.
[0011] Further, the initial height of the outer ring is 1.5-2.2 times of the height of the inner ring, and each first hollow and each second hollow are arranged obliquely, and when the valve plate is completely pressed down, the outer ring and the inner ring are compressed to the same height.
[0012] Further, each first hollow and each second hollow are parallelogram through holes, and the long side is radially arranged at an angle of 30°-60° with the sealing ring.
[0013] Further, the outer ring is made of silicone rubber, and the inner ring is made of polyurethane.
[0014] Further, the inner plate is provided with a protrusion, and the shell is provided with a groove matched with the protrusion, and the cooperation of the protrusion and the groove is used to limit the maximum compression displacement of the inner plate.
[0015] Compared with the prior art, the utility model has the beneficial effects that:
[0016] 1. The utility model discloses a sealing ring for a valve plate, which comprises an outer ring and an inner ring, and the outer ring is arranged on the inner ring.
[0017] 2. The utility model discloses a sealing ring for a valve plate, which comprises an outer ring and an inner ring, and the outer ring is arranged on the inner ring. BRIEF DESCRIPTION OF DRAWINGS
[0018] Fig. 1 It is a lateral section structure schematic view of the embodiment of the utility model;
[0019] Fig. 2 It is a forward section structure schematic view of the embodiment of the utility model;
[0020] Fig. 3 It is a structure schematic view of the valve plate of the embodiment of the utility model when not being pressed down.
[0021] REFERENCE SIGNS
[0022] Valve body 1;
[0023] Valve cover 2;
[0024] Support 3;Rotating rod 31;
[0025] Rotating disc 4;
[0026] Valve plate 5;Shell 51;Groove 511;Inner plate 52;Protrusion 521;Elastic member 53;
[0027] Sealing ring 6; outer ring 61; first cutout 611; inner ring 62; second cutout 621. Detailed Implementation
[0028] The following will describe the implementation of this utility model in detail with reference to specific embodiments, so that the process of how this utility model uses technical means to solve technical problems and achieve technical effects can be fully understood and implemented accordingly.
[0029] Example
[0030] like Figs. 1 to 3 As shown, a high-elasticity sealing clamp gate valve includes a valve body 1, a valve cover 2 disposed above the valve body 1, a bracket 3 disposed above the valve cover 2, and a turntable 4 disposed above the bracket 3. The bracket 3 is provided with a rotating rod 31, and the valve body 1 is provided with a valve plate 5. The bottom end of the rotating rod 31 is connected to the valve plate 5. The valve plate 5 includes an outer shell 51, an inner plate 52, and an elastic element 53. The inner plate 52 and the elastic element 53 are disposed inside the outer shell 51, and the elastic element 53 is used to provide elastic reset of the inner plate 52 relative to the outer shell 51.
[0031] The valve body 1 is provided with a sealing ring 6, which includes an outer ring 61 and an inner ring 62 arranged coaxially. The outer ring 61 is made of silicone rubber, and the inner ring 62 is made of polyurethane. The outer ring 61 is arranged corresponding to the bottom of the outer shell 51, and the inner ring 62 is arranged corresponding to the bottom of the inner plate 52. When the valve plate 5 is pressed down, the bottom of the inner plate 52 contacts the inner ring 62 first, and then the bottom of the outer shell 51 contacts the outer ring 61.
[0032] By using a phased sealing method (inner ring 62 contacts first, outer ring 61 contacts later), instantaneous pressure shocks are reduced, one-time overload deformation of the sealing ring is avoided, and service life is extended. The elastic reset design allows the valve plate 5 to self-deform under high pressure, compensating for wear or machining errors of the sealing surface and improving sealing reliability.
[0033] In this embodiment, the bottom of the inner plate 52 protrudes beyond the bottom of the outer shell 51, and the protrusion height is 1.5 times the thickness of the inner ring 62.
[0034] In other preferred embodiments, the bottom of the inner plate 52 may also be recessed into the bottom of the outer shell 51. Correspondingly, the initial height of the inner ring 62 is a certain multiple of the height of the outer ring 61. Both schemes can disperse pressure in advance before complete closure, reduce the impact force when the outer ring 61 contacts, and form redundant protection of double sealing.
[0035] The elastic member 53 is a wave-shaped metal elastic sheet, the peak distance of which gradually decreases along the compression direction; the wave-shaped metal elastic sheet 53 provides nonlinear elastic characteristics, low rigidity buffer contact impact in the initial stage, high rigidity to enhance the sealing pressure in the later stage, prevent rigid collision damage, the peak distance decreases, the elastic force gradually increases in the compression process, matches the pressure requirement when contacting the inner ring 62, avoids vibration or leakage caused by elastic mutation.
[0036] The outer ring 61 is uniformly provided with a plurality of first hollows 611, and the inner ring 62 is uniformly provided with a plurality of second hollows 621, and the size of each first hollow 611 is greater than that of each second hollow 621; the large hollow (first hollow 611) of the outer ring 61 enhances the radial deformation ability of the outer ring, adapts to the non-uniform load when the shell 51 is extruded, the small hollow (second hollow 621) of the inner ring provides local elasticity while ensuring the structural strength of the inner ring 62, improves the fit when the inner plate 52 contacts, and the uniformity of the hollow distribution avoids stress concentration and prevents the local tearing or permanent deformation of the sealing ring 6.
[0037] The initial height of the outer ring 61 is 2 times the height of the inner ring 62, and each first hollow 611 and each second hollow 621 are inclinedly arranged, and when the valve plate 5 is completely pressed down, the outer ring 61 and the inner ring 62 are compressed to the same height.
[0038] Each first hollow 611 and each second hollow 621 are parallelogram through holes, and the long side forms an included angle of 60° with the radial direction of the sealing ring 6; the inclined hollow induces the spiral deformation of the ring body in the compression process, and enhances the circumferential resilience of the sealing ring 6.
[0039] The inner plate 52 is provided with a protrusion 521, and the shell 51 is provided with a groove 511 matched with the protrusion 521, and the cooperation of the protrusion 521 and the groove 511 is used to limit the maximum compression displacement of the inner plate 52; the cooperation of the protrusion 521 and the groove 511 mechanically limits the displacement of the inner plate 52, prevents the overload failure of the elastic member in the overpressure working condition, avoids the hard collision between the inner plate 52 and the shell 51, reduces the risk of metal fatigue, and adjusts the protrusion height to customize the maximum compression amount in different working conditions, and improves the product adaptation flexibility.
[0040] Although the utility model is specifically shown and introduced in combination with the preferred embodiments, those skilled in the art should understand that various changes can be made to the utility model in form and detail without departing from the spirit and scope of the utility model defined in the appended claims, and all are within the protection scope of the utility model.
Claims
1. A high-elasticity sealed clamp gate valve, comprising a valve body, a valve cover arranged above the valve body, a support arranged above the valve cover, and a rotary disc arranged above the support, wherein a rotary rod is arranged in the support, and a valve plate is arranged in the valve body, and the bottom end of the rotary rod is connected with the valve plate, characterized in that: the valve plate comprises an outer shell, an inner plate, and an elastic member, the inner plate and the elastic member are arranged inside the outer shell, and the elastic member is used to provide elastic return of the inner plate relative to the outer shell; a sealing ring is arranged in the valve body, the sealing ring comprises coaxially arranged outer and inner rings, the outer ring is arranged corresponding to the bottom of the outer shell, and the inner ring is arranged corresponding to the bottom of the inner plate, when the valve plate is pressed down, the bottom of the inner plate first contacts the inner ring, and then the bottom of the outer shell contacts the outer ring. The bottom of the inner plate is arranged protruding from the bottom of the outer shell, and the protruding height is 1.2-1.5 times the thickness of the inner ring. The elastic member is a wave-shaped metal elastic sheet, and the peak-to-peak distance gradually decreases along the compression direction.
2. A high-pull-apart sealed clamp gate valve as defined in claim 1, wherein: The outer ring is uniformly distributed with a plurality of first hollows, and the inner ring is uniformly distributed with a plurality of second hollows, and the size of each first hollow is greater than that of each second hollow.
3. A high-pull-apart sealed clamp gate valve as defined in claim 1, wherein: The initial height of the outer ring is 1.5-2.2 times the height of the inner ring, and each first hollow and each second hollow is arranged obliquely, when the valve plate is completely pressed down, the outer ring and the inner ring are compressed to the same height.
4. A high-pull sealed, clamp-gate valve as defined in claim 1, wherein: Each first hollow and each second hollow is a parallelogram-shaped hole, and the long side forms an angle of 30°-60° with the radial direction of the sealing ring.
5. A high-pull-apart sealed clamp gate valve as defined in claim 4, wherein: The outer ring is made of silicone rubber, and the inner ring is made of polyurethane.
6. A high durometer sealed, clamp-gate valve as defined in claim 4, wherein: A protrusion is arranged on the inner plate, and a groove matched with the protrusion is arranged on the outer shell, and the cooperation of the protrusion and the groove is used to limit the maximum compression displacement of the inner plate.
7. A high-pull-apart sealed clamp gate valve as defined in claim 1, wherein: 8. A high-pull-apart sealed clamp gate valve as defined in claim 1, wherein: