Adjusting type valve clack
By using an integrated valve disc structure and a soft sealing material design, the problem of difficult gasket replacement is solved, enabling convenient gasket replacement and seamless sealing, thereby improving the valve's sealing reliability and maintenance efficiency.
Patent Information
- Application Number
- CN202520152921.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-22
- Publication Date
- 2025-11-21
- Estimated Expiration
- 2035-01-22
AI Technical Summary
Existing valve disc gaskets are difficult to replace after prolonged use, resulting in high maintenance costs and potential damage to other components, affecting valve performance and lifespan.
The valve disc adopts an integrated molding structure, and the sealing gasket is connected to the valve disc body through an opening filled with sealing material. Combined with soft sealing material and fitting design, the sealing gasket can be easily replaced.
It enables seamless replacement of gaskets, avoids media leakage, improves sealing reliability and maintenance convenience, and reduces maintenance costs.
Smart Images
Figure CN223578902U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to the technical field of valves, in particular to a regulating valve disc. BACKGROUND
[0002] At present, in the application scene of valves, the valve disc is a key component in the valve, and the valve disc plays a crucial role in controlling the flow, pressure and other parameters of the fluid. The traditional valve disc is usually composed of a valve disc connecting part, a valve disc body and a sealing surface, and its sealing performance directly affects the working efficiency of the valve and the stability of the system.
[0003] At present, the existing valve discs on the market mostly adopt the way of cooperation between the sealing gasket and the valve disc body to realize the sealing function in the design of the sealing structure. However, this design exposes some problems in the actual use process. Since the sealing gasket is a key anti-leakage component, in order to ensure good sealing effect, its assembly with the valve disc body is usually relatively tight. After the valve disc is used for a long time, it is affected by factors such as medium scouring and atmospheric pressure, the connection between the sealing gasket and the valve disc body becomes more and more tight, which leads to great difficulty in operation when the sealing gasket needs to be replaced. Maintenance personnel often need to spend a lot of time and effort to use complex tools and methods to take off the sealing gasket from the valve disc body, which not only increases the maintenance cost, but also may cause damage to other parts of the valve disc due to improper operation, thereby affecting the performance and service life of the entire valve.
[0004] Therefore, how to design a valve disc that can be conveniently and quickly replaced while ensuring good sealing performance has become a technical problem to be solved in the current field. CONTENT OF THE INVENTION
[0005] The purpose of the present application is to provide a regulating valve disc to solve the problem that the sealing gasket in the valve disc is not easy to replace.
[0006] In order to achieve the above purpose, the technical scheme adopted by the present application is to provide a regulating valve disc, which comprises a valve disc connecting part, a valve disc body and a sealing surface, the valve disc connecting part, the valve disc body and the sealing surface are integrally formed and injection molded in sequence, one side of the sealing surface is used to connect with a valve seat, and one side of the valve disc connecting part is used to connect with a valve rod; a sealing gasket is connected with the valve disc body, and the sealing gasket contacts the valve seat in cooperation with the sealing surface; wherein a hole is formed in the valve disc body, the hole is provided through along the axial extension direction of the valve disc, one end of the hole abuts against the sealing gasket, the other end of the hole leads out close to the valve disc connecting part, and the hole is used to fill a sealing material.
[0007] As a preferred, the sealing gasket is connected with the valve disc body in a way of embedding.
[0008] As another preferred, the valve disc body is provided with a protrusion, the protrusion cooperates with the outer wall of the sealing surface to form a groove, the sealing gasket is embedded through the groove.
[0009] Further preferably, the sealing gasket is provided with a protrusion relative to the surface of the valve disc body, and the protrusion height of the sealing gasket is greater than the protrusion height of the protrusion.
[0010] Further preferably, the sealing material is a soft sealing material.
[0011] Preferably, the sealing gasket is a soft sealing gasket.
[0012] Preferably, the sealing surface is arranged in a staggered manner with the valve disc connecting part, and the cross-sectional width of the sealing surface near one side of the valve disc body is less than the cross-sectional width of the valve disc connecting part.
[0013] Preferably, the opening is arranged near the edge of the sealing gasket, and the edge is the side of the sealing gasket away from the sealing surface.
[0014] Further preferably, the sealing surface is arranged in a circular arc shape.
[0015] Preferably, the valve disc connecting part is provided with an internal thread, and the valve disc connecting part is connected with the external valve stem through the internal thread.
[0016] Compared with the prior art, the application has the beneficial effects that:
[0017] The regulating valve disc in the application file has a dead angle-free working condition, the sealing material filled in the opening can effectively prevent the medium from leaking through the opening, and since the sealing gasket is pressed and assembled on the valve disc body, only the sealing material filled in the opening needs to be pressed in the vertical direction to open the sealing gasket during replacement of the sealing gasket, so that the sealing gasket is convenient to replace. BRIEF DESCRIPTION OF DRAWINGS
[0018] Fig. 1 It is a structural schematic diagram of the regulating valve disc;
[0019] Fig. 2 It is a structural schematic diagram of the regulating valve disc without assembling the sealing gasket;
[0020] Fig. 3 It is a local structural schematic diagram of the opening position of the regulating valve disc.
[0021] In the figure: 1, regulating valve disc; 10, valve disc connecting part; 11, internal thread; 20, valve disc body; 21, opening; 22, protruding part; 23, groove; 30, sealing surface; 40, sealing gasket; h1, first height; h2, second height; X1, first width; X2, second width. DETAILED DESCRIPTION
[0022] Hereinafter, the present application will be further described in conjunction with specific embodiments, and it should be noted that the following described embodiments or technical features can be combined in any manner to form new embodiments without conflict.
[0023] In the description of the present application, it should be noted that for orientation words, such as the terms "center", "transverse", "longitudinal", "length", "width", "thickness", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. indicate the orientation and positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and cannot be understood as limiting the specific protection scope of the present application.
[0024] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application are used to distinguish similar objects, and do not necessarily describe a specific order or sequence.
[0025] The terms "include" and "have" and any variations thereof in the specification and claims of the present application are intended to cover non-exclusive inclusion, for example, a process, method, system, product or device that includes a series of steps or units does not have to be limited to only those steps or units clearly listed, but can include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.
[0026] In a preferred embodiment, referring to Figs. 1 to 3 The present application provides a regulating valve disc 1, which comprises a valve disc connecting part 10, a valve disc body 20 and a sealing surface 30, the valve disc connecting part 10, the valve disc body 20 and the sealing surface 30 are integrally formed and injection molded in sequence, one side of the sealing surface 30 is used to connect with a valve seat, and one side of the valve disc connecting part 10 is used to connect with a valve rod; a sealing gasket 40, which is connected with the valve disc body 20 and contacts with the valve seat in cooperation with the sealing surface 30; wherein the valve disc body 20 is provided with an opening 21, the opening 21 is provided through along the axial extension direction of the valve disc, one end of the opening 21 abuts against the sealing gasket 40, and the other end of the opening 21 leads out near the valve disc connecting part 10, and the opening 21 is used to fill a sealing material.
[0027] Specifically, since the sealing gasket 40 is a leak-proof part, the sealing gasket 40 is tightly assembled with the valve body 20. After actual use, due to the erosion of the medium and the extrusion of the atmospheric pressure, it will be difficult to remove and replace the sealing gasket 40 from the valve body 20. Therefore, the opening 21 provided on the valve body 20 is tightly fitted with a sealing material, so as to ensure that the regulating valve 1 has no dead angle in the working condition, and the medium can be effectively prevented from leaking through the opening 21. Since the sealing gasket 40 is extruded and assembled on the valve body 20, during the replacement of the sealing gasket 40, only the sealing material filled in the opening 21 needs to be extruded in the vertical direction, so as to top off the sealing gasket 40, thereby facilitating the replacement of the sealing gasket 40.
[0028] Meanwhile, the opening 21 on the valve body 20 is filled with a sealing material, and one end of the opening 21 abuts against the sealing gasket 40, and the other end is close to the valve connecting part 10. Therefore, in the use process of the regulating valve 1, the above structure enables the sealing material to provide additional support force to the sealing gasket 40. When the valve is closed, the sealing gasket 40 is extruded between the valve body 20 and the valve seat, and the sealing material can apply a uniform pressure to the sealing gasket 40 inside, so as to fill the possible small gap of the sealing gasket 40, thereby effectively preventing the medium from leaking, and further enhancing the sealing effect.
[0029] Further, the valve connecting part 10, the valve body 20 and the sealing surface 30 are sequentially integrally formed by injection molding, which reduces the connection gap between the parts. Compared with the traditional assembled structure, the integrally formed mode reduces the risk of leakage caused by loose connection or poor sealing, so that the whole valve structure is more compact, which helps to improve the sealing reliability of the valve under different working conditions.
[0030] Further preferably, the sealing material is a soft sealing material, and the sealing gasket 40 is also a soft sealing gasket 40, which is matched with the soft sealing material filled in the opening 21. The valve disc in the prior art cannot guarantee zero leakage during use. Therefore, the sealing gasket 40 in the present application is a soft sealing gasket 40, which is matched with the sealing surface 30 and the soft sealing material filled in the opening 21. The soft sealing material can effectively fill the small gap between the valve disc and the valve seat by using the good filling property and adaptability of the soft material. The soft sealing material can deform when subjected to pressure, tightly fit the irregular surface of the valve seat, and achieve zero leakage of the regulating valve disc 1 during use. This is very important for some fluid conveying systems in industries such as chemical industry and pharmaceutical industry, which have very high sealing requirements. At the same time, the soft sealing gasket 40 is easier to remove and has better deformation ability, which is convenient for fitting with the valve seat. The soft sealing material is easier to extrude into the opening 21, which makes it easier to replace the sealing gasket 40.
[0031] The soft sealing material can be a polytetrafluoroethylene or a rubber material, such as nitrile rubber or fluororubber. The soft sealing gasket 40 can be a silica gel gasket or a soft polyvinyl chloride (PVC) gasket.
[0032] Further preferably, the sealing gasket 40 is embeddedly connected with the valve disc body 20.
[0033] The embedded connection of the sealing gasket 40 and the valve disc body 20 can effectively prevent the displacement of the sealing gasket 40 during frequent opening and closing of the valve. Under the action of fluid impact and valve disc movement, the sealing gasket 40 can be firmly fixed on the valve disc body 20, ensuring that the sealing gasket 40 is always in the correct position and maintaining good sealing performance. At the same time, this tight embedded connection can avoid gaps between the sealing gasket 40 and the valve disc body 20, preventing leakage of the medium from the connection part of the sealing gasket 40 and the valve disc body 20.
[0034] As another preferred embodiment, the valve disc body 20 is provided with a protruding part 22, which cooperates with the outer wall of the sealing surface 30 to form a groove 23, and the sealing gasket 40 is embedded in the groove 23.
[0035] The groove 23 provides a clear installation position for the sealing gasket 40, which can be accurately embedded in the groove during installation. This helps to quickly and accurately place the sealing gasket 40 during assembly, improves assembly efficiency, and also ensures the position accuracy of the sealing gasket 40 during use, ensuring that the sealing cooperation between the sealing gasket 40 and the valve seat reaches the best state.
[0036] And the structure design of the protruding part 22 and the groove 23 plays a good limiting role on the sealing gasket 40, preventing the sealing gasket 40 from falling off the valve body 20 when subjected to external force (such as fluid impact, vibration, etc.). This structure can effectively ensure the connection integrity of the sealing gasket 40 and the valve body 20 under complex working conditions, such as strong vibration or large medium pressure fluctuation, thereby ensuring the normal operation and sealing function of the valve.
[0037] Further preferably, the sealing gasket 40 is arranged with a protrusion relative to the surface of the valve body 20, and the protrusion height of the sealing gasket 40 is greater than the protrusion height of the protruding part 22. The protrusion height of the sealing gasket 40, that is, the thickness of the sealing gasket 40 is denoted as h1, and the protrusion height of the protruding part 22 is denoted as h2. The thickness h1 of the sealing gasket 40 is greater than the height h2 of the protruding part 22, so that during the closing process of the valve, the sealing gasket 40 can first contact the valve seat, and as the valve further tightens, the sealing gasket 40 will be gradually compressed. Due to the existence of this height difference, the compression force received by the sealing gasket 40 can be more effectively transmitted to the contact surface with the valve seat, thereby generating sufficient sealing contact pressure and enhancing the sealing effect, which is more conducive to achieving the goal of zero leakage.
[0038] At the same time, during the long-term use of the adjustable valve disc 1 in the present application, the valve seat in contact with it may be worn, corroded, etc., resulting in uneven surface, so the protrusion height of the sealing gasket 40 can compensate for these defects to some extent. When the valve seat surface appears small concave or uneven, the sealing gasket 40 can better fill these gaps with its protruding part, maintaining good sealing performance.
[0039] Preferably, the sealing surface 30 is arranged in a staggered manner with the valve disc connecting part 10, and the cross-sectional width of the sealing surface 30 near the valve body 20 side is smaller than the cross-sectional width of the valve disc connecting part 10. The cross-sectional width of the sealing surface 30 near the valve body 20 side is denoted as X2, and the cross-sectional width of the valve disc connecting part 10 is denoted as X1. The cross-sectional width X2 of the sealing surface 30 near the valve body 20 side is smaller than the cross-sectional width X1 of the valve disc connecting part 10. This staggered design makes the adjustable valve disc more compact in structure. In the limited space inside the valve disc, the positions of various components can be more reasonably arranged to optimize the space structure utilization of the adjustable valve disc 1, and at the same time, the flow path of the fluid around the valve disc can also be improved.
[0040] Meanwhile, the wider cross section of the valve disc connecting part 10 can provide better support and stability for the valve disc, and the wider cross section of the valve disc connecting part 10 can provide a deeper fitting area for the sealing gasket 40 compared to the cross section width X2 of the sealing surface 30, and the wider valve disc connecting part 10 can better transmit and disperse force during the opening and closing operation of the valve and under fluid pressure, reducing the risk of damage to the sealing surface 30 due to uneven force.
[0041] Preferably, the opening 21 is arranged close to the edge of the sealing gasket 40, which is the side of the sealing gasket 40 away from the sealing surface 30. In this case, the position of the opening 21 forms a structure similar to a lever relative to the sealing gasket 40, and when the sealing gasket 40 needs to be replaced, the operator only needs to press the sealing material in the opening 21 to lift the side edge of the sealing gasket 40, which is easier than replacing the sealing gasket 40 if the opening 21 is arranged in the middle of the sealing gasket 40.
[0042] Preferably, when the valve is closed, the fluid pressure mainly acts on the center and the area close to the sealing surface 30 of the sealing gasket 40. Arranging the opening 21 close to the edge of the side of the sealing gasket 40 away from the sealing surface 30, the sealing material filled in the opening 21 can provide effective pressure compensation for the sealing gasket 40 in this area.
[0043] Further preferably, the sealing surface 30 is arranged in a circular arc shape to play a role in flow regulation.
[0044] Preferably, the valve disc connecting part 10 is provided with internal threads 11, and the valve stem is provided with external threads, and then the valve disc connecting part 10 is connected with the external valve stem through threads, and the arrangement of the internal threads 11 of the valve disc connecting part 10 makes the valve stem arranged inward relative to the regulating valve disc 1 in the present application, avoiding the diameter of the valve stem exceeding the diameter of the first width of the valve disc connecting part 10, thereby effectively avoiding the valve stem blocking the opening 21, so that the operator does not need to separately disassemble the valve stem during the replacement of the sealing gasket 40, and can directly press the soft sealing material in the opening 21 to replace the sealing gasket 40, making the operation process more convenient.
[0045] The above describes the basic principles, main features and advantages of the present application. Those skilled in the art should understand that the present application is not limited to the above examples, and the above examples and descriptions in the specification are only the principles of the present application, and various changes and improvements can be made without departing from the spirit and scope of the present application, and these changes and improvements all fall within the scope of the claimed present application. The scope of protection claimed by the present application is defined by the appended claims and their equivalents.
Claims
1. A regulating valve flap, characterized in that The valve clack comprises a valve clack connecting part, a valve clack body and a sealing surface, which are integrally formed by injection molding in sequence, one side of the sealing surface is used to connect with a valve seat, and one side of the valve clack connecting part is used to connect with a valve rod. A sealing gasket is connected with the valve clack body and is in contact with the valve seat through the sealing surface. A hole is formed in the valve clack body and extends through the valve clack along the axial direction, one end of the hole is in abutment with the sealing gasket, and the other end of the hole is led out close to the valve clack connecting part, and the hole is filled with a sealing material.
2. The regulating valve clack according to claim 1, wherein the sealing gasket is embeddedly connected with the valve clack body.
3. The regulating valve clack according to claim 2, wherein the valve clack body is provided with a protruding part, the protruding part cooperates with the outer wall of the sealing surface to form a groove, and the sealing gasket is embedded through the groove.
4. The regulating valve clack according to claim 3, wherein the sealing gasket is protruded relative to the surface of the valve clack body, and the protruding height of the sealing gasket is greater than the protruding height of the protruding part.
5. The regulating valve clack according to claim 1, wherein the sealing material is a soft sealing material.
6. The regulating valve clack according to claim 5, wherein the sealing gasket is a soft sealing gasket.
7. The regulating valve clack according to claim 4, wherein the sealing surface is arranged in a staggered manner with the valve clack connecting part, and the cross-sectional width of the sealing surface close to one side of the valve clack body is less than the cross-sectional width of the valve clack connecting part.
8. The regulating valve clack according to any one of claims 1-7, wherein the hole is arranged close to the edge of the sealing gasket, and the edge is the side of the sealing gasket away from the sealing surface.
9. The regulating valve clack according to any one of claims 1-7, wherein the sealing surface is arranged in a circular arc shape.
10. The regulating valve clack according to any one of claims 1-7, wherein the valve clack connecting part is provided with an internal thread, and the valve clack connecting part is connected with the valve rod through the internal thread.