Novel rotary ball valve with buffer structure
By using double tightening screws and buffer rubber ring design in the rotary ball valve, the problem of degradation of sealing performance of the rotary ball valve under low pressure is solved, and it also provides anti-silt function, extends service life and reduces maintenance times.
Patent Information
- Application Number
- CN202411922851.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-25
- Publication Date
- 2025-03-14
AI Technical Summary
When the existing rotary ball valve is switched for a long time under low pressure, the valve plate and rear valve seat pressure ring are prone to loosening, resulting in a degradation of sealing performance and lack of anti-silt function, which has many maintenance times and short service life.
The double tightening screw design is adopted to add buffering function. Through the design of the buffer rubber ring and floating valve seat, the anti-loosening and anti-retardant double seal is adjusted, and a stainless steel layer is added to the sealing surface of the valve plate to provide anti-silt function.
It effectively avoids hard collision between the valve seat and the valve plate sealing surface, reduces noise and vibration, improves sealing performance and service life, reduces maintenance times, and provides anti-silt function.
Smart Images
Figure CN119617136A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the technical field of valves, in particular to a rotary ball valve with a novel buffer structure. Background Art
[0002] The ball-spinning valve is a valve widely used in the field of fluid control. It cuts off or regulates the fluid by rotating the ball. The ball-spinning valves currently on the market have no anti-retraction and anti-loosening measures in the design of the compressed floating valve seat, and the buffering effect is poor. When switched for a long time under low pressure, the valve disc and the rear valve seat pressure ring become loose, which can easily affect the sealing performance. The loose screws and poor buffering effect during long-term opening and closing cause the valve seat and the valve disc (valve core) sealing surface to collide hard, causing sealing leakage. The valve requires a lot of maintenance and does not have the function of preventing sediment.
[0003] The present invention utilizes double set screws of the valve seat pressure ring and increases a buffer function, adjusts the double seals for preventing loosening and retreating, and increases an anti-silt function, which effectively avoids sealing leakage caused by hard collision between the valve seat and the valve plate (valve core) sealing surface due to loose screws during long-term opening and closing of the valve, and can also maintain good sealing performance, reduce the number of maintenance times, extend the service life of the valve, and have significant economic benefits. Summary of the invention
[0004] The main purpose of the present invention is to provide a new type of ball rotary valve with a buffer structure, so as to effectively solve the problems raised in the background technology.
[0005] To achieve the above-mentioned purpose, the present invention adopts the following technical scheme: a rotary ball valve with a novel buffer structure, comprising a cylindrical hollow valve body, an upper valve shaft is arranged at the upper end of the valve body, a lower valve shaft is arranged at the lower end, an O-ring is arranged on the lower valve shaft and is sealed with the valve body, an end cover is arranged at the lower end of the lower valve shaft, a valve plate is rotatably fixed on the upper valve shaft and the lower valve shaft, a sealing port is arranged between the valve plate and the inner cavity of the valve body, a valve plate welded stainless steel layer is arranged on the sealing surface of the valve plate, a secondary stepped annular groove is arranged in the inner cavity of the valve body, a floating valve seat is arranged in the smaller annular groove, one side of the inner cavity of the floating valve seat is in contact and sealed with the valve plate welded stainless steel layer, a valve seat welded alloy sealing surface is arranged at the contact point between the floating valve seat and the valve plate welded stainless steel layer, a buffer rubber ring is arranged at the contact point between the floating valve seat and the corner of the stepped annular groove, a sealing ring is arranged on the side wall of the floating valve seat, a pressure plate is arranged in the larger annular groove in the inner cavity of the valve body, and is fixed to the valve body with a hexagonal cylindrical head screw; a certain gap is arranged between the floating valve seat and the pressure plate.
[0006] Preferably, the side wall of the valve body annular groove on which the floating valve seat is installed is provided with a valve body welded stainless steel layer.
[0007] Preferably, an annular opening groove with a rectangular cross-section is arranged on the end surface of the floating valve seat facing the pressure plate, and a buffer rubber square strip is arranged in the annular opening groove.
[0008] Preferably, a gasket is embedded on the end surface of the pressure plate facing the floating valve seat, and the gasket is tightly mounted on the buffer rubber square strip on the floating valve seat.
[0009] Preferably, a plurality of evenly distributed bolt holes are arranged on the outer side of the washer embedded in the pressure plate, a hexagon socket set screw B is installed in the bolt hole, a hexagon socket set screw A is installed on the outer side of the hexagon socket set screw B, the washer can be adjusted by the hexagon socket set screw A and the hexagon socket set screw B, and then the pressure of the buffer rubber square strip pressing on the floating valve seat can be adjusted, and the double screw structure of the hexagon socket set screws B and A has a specific anti-loosening effect.
[0010] The buffer rubber square strip can make the floating valve seat have a buffer function.
[0011] Beneficial effects of the present invention: The floating valve seat buffering function structure reduces the probability of fatigue damage of the valve seat due to long-term high stress. The floating valve seat under buffering can more accurately control the closing process, can better adapt to different pressure, temperature and other working conditions to achieve reliable sealing, can effectively reduce the hard collision between the valve seat and the valve plate sealing surface under the buffering effect, reduce the wear of the valve seat due to great impact force, extend the service life of the valve seat, and can also effectively reduce and reduce noise and vibration, improve the safety and stability of the entire pipeline system. Reduce the number of maintenance times and extend the service life of the valve. BRIEF DESCRIPTION OF THE DRAWINGS
[0012] Attached Figure 1 It is a schematic diagram of the structure of the present invention.
[0013] Attached Figure 2 It is a cross-sectional view of the structure of the present invention.
[0014] Attached Figure 3 For attachment Figure 2 Partial enlarged image.
[0015] Attached Figure 4 It is a schematic diagram of the sealing structure of the valve of the present invention.
[0016] Attached Figure 1 —4, valve body 1, valve plate 2, upper valve shaft 3, pressure plate 4, hexagon socket head screw 5, hexagon socket set screw A6, hexagon socket set screw B7, gasket 8, buffer rubber square strip 9, buffer rubber ring 10, floating valve seat 11, lower valve shaft 12, O-ring 13, end cover 14, valve body welded stainless steel layer 15, valve seat welded alloy sealing surface 16, valve plate welded stainless steel layer 17. DETAILED DESCRIPTION
[0017] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.
[0018] Attached Figure 1 —4 shows a novel rotary ball valve with a buffer structure, comprising a cylindrical hollow valve body 1, an upper valve shaft 3 is arranged at the upper end of the valve body, a lower valve shaft 12 is arranged at the lower end, an O-ring 13 is arranged on the lower valve shaft 12 to seal with the valve body 1, an end cover 14 is arranged at the lower end of the lower valve shaft 12, a valve plate 2 is rotatably fixed on the upper valve shaft 3 and the lower valve shaft 12, a sealing port is arranged between the valve plate 2 and the inner cavity of the valve body, a valve plate surfacing stainless steel layer 17 is arranged on the sealing surface of the valve plate 2, a secondary stepped annular groove is arranged in the inner cavity of the valve body 1, and a A floating valve seat 11, one side of the inner cavity of the floating valve seat 11 is in contact and sealed with the valve plate welded stainless steel layer 17, a valve seat welded alloy sealing surface 16 is provided at the contact between the floating valve seat 11 and the valve plate welded stainless steel layer 17, a buffer rubber ring 10 is provided at the contact between the floating valve seat 11 and the corner of the stepped annular groove, a sealing ring is provided on the side wall of the floating valve seat 11, a pressure plate 4 is provided in the larger annular groove in the inner cavity of the valve body 1, and is fixed to the valve body with a hexagon socket cylindrical head screw 5; a certain gap is provided between the floating valve seat 11 and the pressure plate 4.
[0019] A valve body welded stainless steel layer 15 is provided on the side wall of the annular groove of the valve body 1 on which the floating valve seat 11 is installed.
[0020] An annular opening groove with a rectangular cross section is arranged on the end surface of the floating valve seat 11 facing the pressure plate 4, and a buffer rubber square strip 9 is arranged in the annular opening groove.
[0021] A gasket 8 is embedded on the end surface of the pressure plate 4 facing the floating valve seat 11 , and the gasket 8 is tightly mounted on the buffer rubber square strip 9 on the floating valve seat 11 .
[0022] A plurality of evenly distributed bolt holes are arranged on the outside of the washer 8 embedded on the pressure plate 4, and a hexagon socket set screw B7 is installed in the bolt hole, and a hexagon socket set screw A6 is installed on the outside of the hexagon socket set screw B7. The washer 8 can be adjusted by the hexagon socket set screw A6 and the hexagon socket set screw B7, and then the pressure of the buffer rubber square strip 9 on the floating valve seat 11 can be adjusted. The double screw structure of the hexagon socket set screws B7 and A6 has a specific anti-loosening effect.
[0023] The buffer rubber square strip 9 can make the floating valve seat 11 have a buffer function.
[0024] Beneficial effects of the present invention: The floating valve seat buffering function structure reduces the probability of fatigue damage of the valve seat due to long-term high stress. The floating valve seat under buffering can more accurately control the closing process, can better adapt to different pressure, temperature and other working conditions to achieve reliable sealing, can effectively reduce the hard collision between the valve seat and the valve plate sealing surface under the buffering effect, reduce the wear of the valve seat due to great impact force, extend the service life of the valve seat, and can also effectively reduce and reduce noise and vibration, improve the safety and stability of the entire pipeline system. Reduce the number of maintenance times and extend the service life of the valve.
[0025] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.
Claims
1. A new type of ball valve with a buffer structure, characterized in that: The utility model comprises a cylindrical hollow valve body, an upper valve shaft is arranged on the upper end of the valve body, a lower valve shaft is arranged on the lower end, an O-ring is arranged on the lower valve shaft and seals with the valve body, an end cover is arranged on the lower end of the lower valve shaft, valve plates are rotatably fixed on the upper valve shaft and the lower valve shaft, sealing ports are arranged on the valve plate and the inner cavity of the valve body, a valve plate welded stainless steel layer is arranged on the sealing surface of the valve plate, a secondary stepped annular groove is arranged in the inner cavity of the valve body, a floating valve seat is arranged in the smaller annular groove, one side of the inner cavity of the floating valve seat is in contact and sealed with the valve plate welded stainless steel layer, a valve seat welded alloy sealing surface is arranged at the contact point between the floating valve seat and the valve plate welded stainless steel layer, a buffer rubber ring is arranged at the contact point between the floating valve seat and the corner of the stepped annular groove, a sealing ring is arranged on the side wall of the floating valve seat, a pressure plate is arranged in the larger annular groove in the inner cavity of the valve body, and is fixed to the valve body with a hexagon socket cylindrical head screw; a certain gap is arranged between the floating valve seat and the pressure plate.
2. According to the novel ball-spinning valve with buffer structure as claimed in claim 1, it is characterized by: The side wall of the annular groove of the valve body on which the floating valve seat is installed is provided with a valve body welded stainless steel layer.
3. According to the novel ball-spinning valve with buffer structure as claimed in claim 1, it is characterized by: An annular opening groove with a rectangular cross section is arranged on the end surface of the floating valve seat facing the pressure plate, and a buffer rubber square strip is arranged in the annular opening groove.
4. A new type of ball-spinning valve with a buffer structure according to claim 3, characterized in that: A gasket is embedded on the end surface of the pressure plate facing the floating valve seat, and the gasket is tightly installed on the buffer rubber square strip on the floating valve seat.
5. According to claim 4, a new type of ball-spinning valve with a buffer structure is characterized in that: A plurality of evenly distributed bolt holes are arranged on the outside of the washer embedded on the pressure plate, a hexagon socket set screw B is installed in the bolt hole, a hexagon socket set screw A is installed on the outside of the hexagon socket set screw B, the washer can be adjusted by the hexagon socket set screw A and the hexagon socket set screw B, and then the pressure of the buffer rubber strip pressing on the floating valve seat can be adjusted, and the double screw structure of the hexagon socket set screws B and A has a specific anti-loosening effect.