A vibration and noise reduction device for fixing a conical valve

Abstract

The present application discloses a vibration reduction and noise reduction device for a fixed conical valve, which relates to the technical field of valves and is arranged on a fixed conical valve. The vibration reduction and noise reduction device includes a first air supply component and a plurality of second air supply components. An annular negative pressure zone is formed in the cavity on the side of the valve body close to the water outlet pipe; the first air supply component includes a plurality of air supply pipes, which are located on the outside of the guide cover, one end of which is fixedly connected to the peripheral side of the guide cover and communicated with the cavity, and can replenish gas to the position of the peripheral side of the valve body in the cavity; the second air supply component includes a plurality of air supply structures, one end of which passes through the water outlet pipe, passes through the interior of the water outlet pipe, is located in the negative pressure zone and communicates with the cavity. The present application can effectively weaken the cavitation phenomenon, thereby effectively reducing the impact of the cavitation phenomenon and reducing the vibration and noise caused by it.

Description

Technical Field

[0001] The present application relates to the technical field of valves, and in particular to a vibration and noise reduction device for fixing a conical valve. Background Art

[0002] Valves are essential components in the hydropower industry, which can be used to control the flow rate and direction of water in pipelines, adjust the pressure of water pipelines, etc. Among them, fixed cone valves play an important role in water conservancy and hydropower projects with their excellent characteristics.

[0003] Fixed cone valves are mainly used in working environments with large flow and high pressure difference. Therefore, they need to have strong anti-cavitation performance and good flow capacity. In the process of continuous optimization of internal and external structures, a series of measures to improve flow state and negative pressure have been improved, such as guide cover, damping ring, cone energy dissipation orifice plate behind the valve, energy dissipation pool, etc.

[0004] However, due to the complex flow in the internal flow field of the fixed cone valve, the high-speed jet near the guide cone enters the suddenly expanded area, which is very likely to form a strong vortex flow and produce a significant negative pressure area, causing the local pressure to drop to the saturated vapor pressure of the fluid at this temperature. At this time, the pressure outside the core of the microbubble in the fluid is less than the pressure inside the core. The microbubble grows and develops rapidly under the pressure difference between the inside and outside of the core and forms cavitation. The cavitation moves along the flow channel to the high-pressure area of ​​the wake and quickly collapses. This process of cavitation growth and collapse is called cavitation. The phenomenon that the flow-through components are damaged by the impact of cavitation is called cavitation, which not only affects the hydrodynamic performance of the valve body components, but also threatens the safety of the local structure.

[0005] In engineering applications, the vibration and noise caused by the cavitation phenomenon of fixed cone valves have hazards that cannot be ignored. Excessive vibration may cause damage to the valve body structure, loosening of upstream and downstream pipelines, and damage to facilities around the valve body; while excessive noise will generate a lot of sound pollution and affect the working environment. Summary of the invention

[0006] The present application provides a vibration and noise reduction device for fixing a conical valve, which can effectively weaken the cavitation phenomenon, thereby effectively reducing the impact caused by the cavitation phenomenon and reducing the vibration and noise caused by it.

[0007] The present application provides a vibration reduction and noise reduction device for fixing a conical valve, which adopts the following technical solution:

[0008] A vibration and noise reduction device for a fixed cone valve, arranged on the fixed cone valve, the fixed cone valve comprising a valve body, a flow deflector, a water inlet pipe and a water outlet pipe, the flow deflector having a cavity inside, the valve body being fixedly connected to the flow deflector in the cavity, the water inlet pipe and the water outlet pipe being fixedly connected to the two ends of the flow deflector respectively, the water inlet pipe being connected and communicating with the valve body, the water outlet pipe being communicated with the cavity, comprising a plurality of air supply pipes and a plurality of air supply structures, an annular negative pressure area being formed in the cavity on one side of the valve body close to the water outlet pipe;

[0009] The air supply pipe is located outside the guide cover, one end of which is fixedly connected to the periphery of the guide cover and communicates with the cavity, and can supply gas to the position of the periphery of the valve body in the cavity;

[0010] One end of the air replenishing structure passes through the water outlet pipe, passes through the interior of the water outlet pipe, is located in the negative pressure area and communicates with the cavity.

[0011] By adopting the above technical solution, a number of air supply pipes can supply air to the cavity, and at the same time a number of air supply structures can accurately supply air to the negative pressure area in the cavity, which can effectively reduce the pressure difference before and after the valve body, thereby reducing the probability of cavitation in the cavity and effectively improving the anti-cavitation performance of the fixed cone valve; and thus can effectively reduce the impact of cavitation and reduce the vibration and noise caused by cavitation.

[0012] Optionally, a total of one air supply pipe is included, and the air supply pipe is located on the top of the air guide cover and is centered relative to the air guide cover;

[0013] And it includes four air-supply structures in total, and the four air-supply structures are distributed in a circular array with the center line of the valve body as the axis.

[0014] By adopting the above technical solution, the fixed cone valve can stably play a role in weakening cavitation under different conditions, and can make the fixed cone valve have a better effect of reducing the vibration noise caused by cavitation under the conditions of larger pressure difference and smaller cavitation number.

[0015] Optionally, the air supply structure includes a first pipe fitting, a second pipe fitting and a connecting sleeve;

[0016] One end of the first pipe fitting has an L-shaped structure for forming a connection with the second pipe fitting, and the second pipe fitting passes through the water outlet pipe along the radial direction of the water outlet pipe and is fixedly connected to the water outlet pipe; the connecting sleeve is movably connected to the second pipe fitting, and one end of the first pipe fitting located in the water outlet pipe has a thread, and the connecting sleeve can be sleeved and threaded with the end of the first pipe fitting.

[0017] By adopting the above technical solution, the installation, maintenance, replacement and other processes of the air-supplying structure can be made more convenient. At the same time, the connection strength between the first pipe fitting and the second pipe fitting can be effectively improved, so that the overall air-supplying structure has higher sealing and structural stability, thereby enabling the air-supplying structure to stably replenish air in the negative pressure area.

[0018] Optionally, the first pipe member has a plurality of positioning blocks at the end where the connecting sleeve is located, and the second pipe member has a plurality of positioning grooves at one end located in the water outlet pipe, and the positioning blocks are adapted to the positioning grooves;

[0019] When the positioning block is plugged into the positioning groove, the direction of the end of the first pipe member away from the second pipe member is parallel to the center line of the valve body.

[0020] By adopting the above technical scheme, the installation of the air-supplying structure can be made more convenient, and the position accuracy of the air-supplying structure after installation can be improved, so that the air-supplying structure can be aligned with the negative pressure area for air replenishment; and the influence of the water flow impact on the air-supplying structure after the fixed conical valve is opened can be reduced, and at the same time, the probability of the first pipe fitting rotating relative to the second pipe fitting after being impacted by the water flow can be reduced, so that it can maintain a high position stability and structural stability under the impact of the water flow.

[0021] Optionally, the air supply structure further includes a sealing member, and after the first pipe member and the second pipe member are connected via the connecting sleeve, the sealing member is located inside the connecting sleeve and between the first pipe member and the second pipe member.

[0022] By adopting the above technical solution, after the air supply structure is installed, the seal can have a sealing effect at the connection between the first pipe fitting and the second pipe fitting, thereby effectively reducing the probability of air leakage, water seepage and the like occurring at the connection between the first pipe fitting and the second pipe fitting.

[0023] Optionally, the sealing member is provided with a plurality of clearance holes for the positioning blocks to pass through.

[0024] By adopting the above technical solution, it is possible to facilitate the determination of the installation position of the seal on the first pipe, and at the same time, the position stability of the seal after installation at the connection between the first pipe and the second pipe can be effectively improved.

[0025] Optionally, the seal is elastic, and the interior of the connecting sleeve has a makeshift space for the seal to be filled after elastic deformation; after the first pipe fitting and the second pipe fitting are connected through the connecting sleeve, the seal is squeezed and deformed between the first pipe fitting and the second pipe fitting.

[0026] By adopting the above technical solution, after the air replenishing structure is installed, the seal can fill the clearance space after being squeezed and deformed, which can reduce the probability of water entering the gap between the connecting sleeve and the second pipe fitting flowing toward the connection between the first pipe fitting and the second pipe fitting, thereby further improving the sealing effect of the seal at the connection between the first pipe fitting and the second pipe fitting.

[0027] Optionally, the surface of the connecting sleeve has a plurality of convex strips, the convex strips extend along the axial direction of the connecting sleeve, and the plurality of convex strips are distributed in a circular array with the axis of the connecting sleeve as the axis.

[0028] By adopting the above technical solution, the convex strip can facilitate the staff to hold the connecting sleeve and control its movement relative to the first pipe fitting, thereby further facilitating the installation, maintenance, replacement and other processes of the air supply structure.

[0029] Optionally, the convex strip has a force-bearing surface and a force-releasing surface, and the force-bearing surface is subjected to the force of the water flow, which can make the connecting sleeve have a tendency to further threadedly cooperate with the first pipe fitting; the force-releasing surface is an arc-shaped surface protruding outward and can guide the flow of water.

[0030] By adopting the above technical solution, after the fixed conical valve is opened, when the air supply structure is impacted by water flow, the impact of the water flow can exert a force on the force-bearing surface, and at the same time the force-releasing surface will guide the water flow to reduce the force it receives. At this time, the connecting sleeve will have a tendency to be further tightened relative to the first pipe fitting under the impact of the water flow, thereby enabling the air supply structure to maintain stable and reliable structural strength and sealing when the fixed conical valve is opened.

[0031] In summary, the present application includes at least one of the following beneficial effects:

[0032] 1. It can replenish air to the cavity and accurately replenish air to the negative pressure area in the cavity, effectively reducing the pressure difference before and after the valve body, thereby reducing the probability of cavitation in the cavity and effectively improving the anti-cavitation performance of the fixed cone valve; thus, it can effectively reduce the impact of cavitation and reduce the vibration and noise caused by cavitation;

[0033] 2. The fixed cone valve can stably play a role in weakening cavitation under different conditions, and can make the fixed cone valve have a better effect of reducing the vibration noise caused by cavitation under the conditions of larger pressure difference and smaller cavitation number;

[0034] 3. It can effectively improve the structural strength and sealing of the air supply structure, and at the same time it can facilitate the staff to install, repair, replace and other operations on the air supply structure;

[0035] 4. It can effectively improve the position stability of the air replenishment structure under the impact of water flow, so that the air replenishment structure can stably replenish air to the negative pressure area in the cavity;

[0036] 5. It can utilize the impact of water flow, so that the air replenishment structure can maintain stable and reliable strength and sealing under the impact of water flow. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Figure 1 It is a structural schematic diagram of a vibration reduction and noise reduction device for fixing a conical valve in Example 1;

[0038] Figure 2 yes Figure 1 The cross-sectional view along the AA line;

[0039] Figure 3 2 is a schematic structural diagram of a vibration reduction and noise reduction device for fixing a conical valve in Example 2;

[0040] Figure 4 yes Figure 3 The enlarged view of point B in the middle;

[0041] Figure 5 yes Figure 3 The cross-sectional view along the CC line;

[0042] Figure 6 is a cross-sectional view of the first pipe member and the second pipe member of the air replenishing structure in Example 2 after being connected;

[0043] Figure 7 It is a cross-sectional view of the first pipe member and the second pipe member of the air replenishing structure in Example 2 when they are connected.

[0044] Explanation of the reference numerals in the accompanying drawings: 1. fixed conical valve; 11. valve body; 12. guide cover; 121. cavity; 122. negative pressure area; 13. water inlet pipe; 14. water outlet pipe; 2. air supply pipe; 3. air supply structure; 31. first pipe fitting; 311. limiting portion; 312. positioning block; 32. second pipe fitting; 321. positioning groove; 33. connecting sleeve; 331. connecting groove; 332. perforation; 333. clearance space; 334. convex strip; 3341. force-bearing surface; 3342. force-releasing surface; 34. sealing member; 341. clearance groove. DETAILED DESCRIPTION

[0045] The following is combined with Figure 1-7 This application is described in further detail.

[0046] Embodiment 1:

[0047] The embodiment of the present application discloses a vibration and noise reduction device for a fixed cone valve, which is used to weaken the cavitation phenomenon during the use of the fixed cone valve, thereby achieving the effect of reducing vibration and reducing noise during the use of the fixed cone valve.

[0048] Reference Figure 1 and Figure 2 The vibration reduction and noise reduction device is installed on the fixed cone valve 1, and the fixed cone valve 1 includes a valve body 11, a guide cover 12, a water inlet pipe 13 and a water outlet pipe 14. In this embodiment, since the valve body 11 of the fixed cone valve 1 is the prior art in the art, it will not be described here in detail, and it is only briefly shown in the drawings.

[0049] The air deflector 12 is a cylindrical structure as a whole, and has a cylindrical cavity 121 inside, and the axis of the cavity 121 coincides with the axis of the air deflector 12. The valve body 11 is also a cylindrical structure as a whole, and the valve body 11 is fixedly mounted on the air deflector 12 and located in the cavity 121; one end of the valve body 11 in the axial direction is fixedly connected to the inner wall of one end of the cavity 121 in the axial direction, and the axis of the valve body 11 coincides with the axis of the cavity 121.

[0050] The water inlet pipe 13 and the water outlet pipe 14 are both in the shape of a circular tube, and the water inlet pipe 13 and the water outlet pipe 14 are respectively installed on both sides of the axial direction of the air deflector 12. One end of the water inlet pipe 13 is fixedly connected to the air deflector 12 and then connected to the valve body 11, and one end of the water outlet pipe 14 is fixedly connected to the air deflector 12 and communicates with the cavity 121, and the axis of the water inlet pipe 13 and the axis of the water outlet pipe 14 both coincide with the axis of the air deflector 12. In this embodiment, the radial dimension of the water inlet pipe 13 is preferably smaller than the radial dimension of the water outlet pipe 14; and the inner diameter of the water inlet pipe 13 is preferably smaller than the radial dimension of the valve body 11, and the inner diameter of the water outlet pipe 14 is larger than the radial dimension of the valve body 11 and smaller than the radial dimension of the air deflector 12.

[0051] After the valve body 11 is fixedly connected to the deflector 12 in the cavity 121, there is space in the cavity 121 on the radial side of the valve body 11 and on the side of the valve body 11 close to the water outlet pipe 14; when the valve body 11 is opened, water can first enter the valve body 11 through the water inlet pipe 13, then enter the cavity 121 through the valve body 11, and finally flow away through the water outlet pipe 14.

[0052] When water flows through the valve body 11 and enters the cavity 121, an annular negative pressure zone 122 will be formed in the cavity 121 on the side of the valve body 11 close to the water outlet pipe 14. The axis of the negative pressure zone 122 coincides with the axis of the valve body 11, and the radial dimension of the negative pressure zone 122 is larger than the radial dimension of the valve body 11 and smaller than the inner diameter of the water outlet pipe 14.

[0053] The vibration reduction and noise reduction device includes a plurality of air supply pipes 2 and a plurality of air supply components, and the air supply pipes 2 and the air supply components can both supply gas to the cavity 121 to reduce the pressure difference before and after the valve body 11, thereby achieving the effect of weakening the cavitation phenomenon. In this embodiment, the vibration reduction and noise reduction device preferably includes a total of one air supply pipe 2 and four air supply components, and at this time, the vibration reduction and noise reduction device has a higher effect of weakening the cavitation phenomenon of the fixed cone valve 1; in other embodiments, the number of air supply pipes 2 and air supply components included in the vibration reduction and noise reduction device may be different, but the effect of weakening the cavitation phenomenon of the fixed cone valve 1 will also change accordingly.

[0054] Since air replenishment to the fixed conical valve 1 is a prior art in the art, in this embodiment, for the convenience of explanation and illustration, only the pipeline for air replenishment is explained and illustrated, and other structures and equipment required for air replenishment are not described in detail, and are omitted in the drawings.

[0055] The air supply pipe 2 is in the shape of a circular tube, and is installed above the air guide cover 12, and is fixedly installed on the air guide cover 12 in a vertical position in the direction of its own axis; one end of the air supply pipe 2 is fixedly connected to the air guide cover 12 and communicates with the cavity 121, and communicates with the space on one side above the valve body 11 in the cavity 121. In this embodiment, it is preferred that the connection position of the air supply pipe 2 and the air guide cover 12 is centered on the air guide cover 12 along the axial direction of the air guide cover 12.

[0056] The air-inflating structure 3 is a circular tube with an L-shaped trajectory as a whole, one end of the air-inflating structure 3 is located in the cavity 121, communicates with the cavity 121 and is aligned with the negative pressure area 122 in the cavity 121, and the other end of the air-inflating structure 3 is located on the circumferential side of the water outlet pipe 14 in the radial direction. After a portion of the air-inflating structure 3 passes through the water outlet pipe 14, it enters the cavity 121 through the internal space of the water outlet pipe 14, and the portion of the air-inflating structure 3 that passes through the water outlet pipe 14 is fixedly connected to the water outlet pipe 14. In this embodiment, it is preferred that one end of the air-inflating structure 3 extends into the cavity 121 in a direction parallel to the axis of the valve body 11, and the air-inflating structure 3 passes through the water outlet pipe 14 in a direction perpendicular to the axis of the water outlet pipe 14; and it is preferred that the air-inflating structure 3 is composed of two straight pipes and a 90° elbow joint, and the ends of the straight pipes are wrapped with raw tape and threadedly connected to the 90° elbow joint.

[0057] The installation positions of the four air replenishing structures 3 are distributed in a circular array with the axis of the valve body 11 as the axis. In this embodiment, the air replenishing structure 3 at the top of the four air replenishing structures 3 preferably passes through the water outlet pipe 14 in a direction parallel to the axis of the air replenishing pipe 2 .

[0058] The implementation principle of a vibration reduction and noise reduction device for fixing a conical valve in the embodiment of the present application is as follows:

[0059] When the air-inflating pipe 2 and the air-inflating structure 3 both inflate the cavity 121, they can accurately and evenly inflate the negative pressure area 122 in the cavity 121; after infusing air, the air pressure in the cavity 121 can be increased, and the pressure difference before and after the valve body 11 can be reduced, thereby effectively weakening the cavitation phenomenon of water flowing in the cavity 121 after the valve body 11 is opened, and further effectively reducing the vibration and noise generated by the cavitation phenomenon during the use of the fixed cone valve 1.

[0060] Embodiment 2:

[0061] Reference Figure 1 and Figure 3 The difference between this embodiment and embodiment 1 lies in the air replenishing structure 3, which can effectively improve the structural strength and sealing of the air replenishing structure 3, so that the air replenishing structure 3 can stably and reliably accurately replenish air to the negative pressure area 122 in the cavity 121; at the same time, it can facilitate the staff to install, repair, replace and other operations on the air replenishing structure 3.

[0062] Reference Figure 3 and Figure 4 The air supply structure 3 includes a first pipe 31 , a second pipe 32 , a connecting sleeve 33 and a sealing member 34 .

[0063] Reference Figure 3 and Figure 5 The first pipe fitting 31 is in the shape of a circular tube, one end of which is a straight tube and the other end of which has an L-shaped structure (the bending point of the L-shaped structure is a 90° bend); the second pipe fitting 32 is in the shape of a circular tube and is a straight tube. The second pipe fitting 32 passes through the water outlet pipe 14 in a direction perpendicular to the axis of the water outlet pipe 14 and is fixedly connected to the water outlet pipe 14. At this time, the two ends of the second pipe fitting 32 are respectively located inside the water outlet pipe 14 and on one side of the radial direction of the water outlet pipe 14.

[0064] Reference Figure 5 and Figure 6 The L-shaped structure at one end of the first pipe fitting 31 can be fixedly connected with one end of the second pipe fitting 32 located inside the water outlet pipe 14 through the connecting sleeve 33. The connecting sleeve 33 is a cylindrical structure as a whole. The interior of the connecting sleeve 33 has a connecting groove 331 adapted to and inserted into the end of the second pipe fitting 32. The connecting sleeve 33 has an internal thread on the peripheral groove wall of the connecting groove 331. The peripheral surface of the end of the second pipe fitting 32 located inside the water outlet pipe 14 has an external thread. The connecting sleeve 33 can be threadedly matched with the second pipe fitting 32, and after the two are threadedly matched, the end of the second pipe fitting 32 will be inserted into the connecting groove 331.

[0065] The connecting sleeve 33 is also provided with a through hole 332 that is compatible with the L-shaped structure at one end of the first pipe fitting 31. The axis of the through hole 332 and the axis of the connecting groove 331 both coincide with the axis of the connecting sleeve 33. One end of the through hole 332 in the axial direction is connected to the connecting groove 331 and the other end passes through the connecting sleeve 33 to form an opening, and the radial dimension of the through hole 332 is smaller than the radial dimension of the connecting groove 331.

[0066] The connecting sleeve 33 is movably connected with the first pipe fitting 31 through the through-hole 332 and the L-shaped structure at one end of the first pipe fitting 31, and the connecting sleeve 33 is kept in sleeve cooperation with the L-shaped structure of the first pipe fitting 31 during the movement relative to the first pipe fitting 31. The end of the first pipe fitting 31 and the L-shaped structure has a limiting portion 311, and the radial dimension of the limiting portion 311 is larger than the radial dimension of the through-hole 332, and not larger than the radial dimension of the connecting groove 331; when the connecting sleeve 33 moves to the extreme position in the direction away from the first pipe fitting 31, the limiting portion 311 will contact and abut against the bottom groove wall of the connecting groove 331, limiting the separation of the connecting sleeve 33 from the first pipe fitting 31. In this embodiment, the outer diameter of the limiting portion 311 is preferably equal to the radial dimension of the connecting groove 331, and the radial dimension of the through-hole 332 is preferably slightly larger than the outer diameter of the L-shaped structure of the first pipe fitting 31, so as to facilitate the movement of the connecting sleeve 33 relative to the first pipe fitting 31 after being sleeved on the first pipe fitting 31.

[0067] The first pipe member 31 has a plurality of positioning blocks 312 on the limiting portion 311, and a plurality of positioning grooves 321 matching the positioning blocks 312 are provided at one end of the second pipe member 32 located inside the outlet pipe 14, and the plurality of positioning blocks 312 on the first pipe member 31 correspond one to one with the plurality of positioning grooves 321 on the second pipe member 32. In this embodiment, it is preferred that the first pipe member 31 has a plurality of positioning blocks 312, and the plurality of positioning blocks 312 are distributed in a circular array with the axis of the first pipe member 31 at the limiting portion 311 as the axis; the second pipe member 32 has a plurality of positioning grooves 321 correspondingly provided, and when the axis of the first pipe member 31 at the limiting portion 311 coincides with the axis of the second pipe member 32, the plurality of positioning members are aligned one to one with the plurality of positioning grooves 321 along the axis of the second pipe member 32.

[0068] When the first pipe fitting 31 is fixedly connected to the second pipe fitting 32 via the connecting sleeve 33 in a position in which the axis of one end of the first pipe fitting 31 away from the limiting portion 311 is parallel to the axis of the valve body 11 , the multiple positioning blocks 312 on the first pipe fitting 31 can all be inserted into the corresponding positioning grooves 321 on the second pipe fitting 32 .

[0069] Reference Figure 6 and Figure 7The seal 34 is an annular sheet structure and has a certain elastic deformation ability. The seal 34 is provided with a plurality of clearance holes for the positioning block 312 to pass through. The plurality of clearance holes are distributed in a circular array on the seal 34 along the axis of the seal 34, and the plurality of clearance holes on the seal 34 correspond one to one with the plurality of positioning blocks 312 on the first pipe 31. After the seal 34 is installed and positioned on the limiting portion 311 of the first pipe 31, the plurality of positioning blocks 312 on the first pipe 31 will be respectively fitted with the plurality of clearance holes on the seal 34 in an interference fit manner, and when the seal 34 is fitted against the limiting portion 311, the end of the positioning block 312 will pass through the corresponding clearance hole. In this embodiment, the seal 34 is preferably made of rubber material.

[0070] After the seal 34 is installed and positioned on the limiting portion 311 of the first pipe 31 and the first pipe 31 and the second pipe 32 are fixedly connected by the connecting sleeve 33, the seal 34 will be squeezed between the first pipe 31 and the second pipe 32 to undergo elastic deformation, and the outer diameter of the seal 34 after elastic deformation will become larger. In this embodiment, it is preferred that when the seal 34 is not squeezed and elastically deformed, its outer diameter is equal to the outer diameter of the limiting portion 311.

[0071] The connecting sleeve 33 is provided with an annular clearance space 333 for elastic deformation of the seal 34 at a position near the through hole 332 on the circumferential side in the radial direction of the installation groove. When the connecting sleeve 33 moves to the extreme position in the direction away from the first pipe fitting 31, the seal 34 installed on the limiting portion 311 of the first pipe fitting 31 will be aligned with the clearance space 333 along its own radial direction; when the first pipe fitting 31 and the second pipe fitting 32 are fixedly connected by the connecting sleeve 33, the squeezed seal 34 can fill the clearance space 333 after elastic deformation.

[0072] Reference Figure 4 and Figure 5 A plurality of ridges 334 are distributed on the circumferential side of the connecting sleeve 33 in the radial direction. The length direction of the ridges 334 is parallel to the axial direction of the connecting sleeve 33. The plurality of ridges 334 are distributed in a circular array on the connecting sleeve 33 with the axis of the connecting sleeve 33 as the axis, and adjacent ridges 334 are connected.

[0073] The convex strip 334 has a force-bearing surface 3341 for bearing the impact of water flow and a force-releasing surface 3342 for alleviating the impact of water flow at a position away from the connecting groove 331 in the radial direction of the connecting sleeve 33. The force-bearing surface 3341 on the same convex strip 334 is connected to the force-releasing surface 3342, and the force-bearing surface 3341 on a convex strip 334 is also connected to the force-releasing surface 3342 on an adjacent convex strip 334.

[0074] The force-bearing surface 3341 is a plane, and the force-releasing surface 3342 is an arc-shaped surface protruding outward along the radial direction of the connecting sleeve 33 . Both the force-bearing surface 3341 and the force-releasing surface 3342 are parallel to the axis of the connecting sleeve 33 .

[0075] When the water in the cavity 121 enters the water outlet pipe 14, the water will generate a force on the surface of the connecting sleeve 33. The force of the water impact on the force-bearing surface 3341 can make the connecting sleeve 33 have a tendency to rotate relative to the second pipe 32, so that the connecting sleeve 33 has a tendency to further thread with the second pipe 32, thereby reducing the probability that the connecting sleeve 33 is subjected to external force and causes the connection strength between the first pipe 31 and the second pipe 32 to decrease, and at the same time, the sealing member 34 can be kept in a state of being squeezed and deformed, so as to maintain the stability of the sealing of the air replenishment structure 3.

[0076] Although the force exerted by the impact of the water flow on the unloading surface 3342 can cause the connecting sleeve 33 to have a tendency to release the threaded fit with the second pipe fitting 32, the unloading surface 3342 can guide the water flow to continue to flow along its arc trajectory, making its tendency smaller than the force exerted by the impact of the water flow on the force-bearing surface 3341 causing the connecting sleeve 33 to have a further tendency to threadably fit with the second pipe fitting 32, so its influence can be ignored; at the same time, the water flow guided by the unloading surface 3342 can be guided to contact the force-bearing surface 3341 adjacent to it, thereby further achieving the effect that can be achieved by the force-bearing surface 3341 being impacted by the water flow.

[0077] The implementation principle of a vibration reduction and noise reduction device for fixing a conical valve in the embodiment of the present application is as follows:

[0078] When installing the air replenishing structure 3, the staff first installs and positions the sealing member 34 on the limiting portion 311 of the first pipe member 31, so that the multiple positioning blocks 312 on the first pipe member 31 respectively pass through the multiple clearance holes on the sealing member 34; then the connecting sleeve 33 is sleeved on the first pipe member 31, and the connecting sleeve 33 is controlled to move relative to the first pipe member 31 in the direction close to the limiting portion 311, and then the outer surface of the connecting sleeve 33 is held to control the connecting sleeve 33 to rotate relative to the first pipe member 31, so that the connecting sleeve 33 and the second pipe member 32 are threadedly matched, and the position of the first pipe member 31 is adjusted. The state is adjusted so that the first pipe fitting 31 maintains a position state in which the axis of one end away from its own limiting portion 311 is parallel to the axis of the valve body 11; after the connecting sleeve 33 and the second pipe fitting 32 are threadedly matched to form a fixed connection, the multiple positioning blocks 312 on the first pipe fitting 31 will be respectively plugged and matched with the multiple positioning grooves 321 on the second pipe fitting 32, and the sealing member 34 will be clamped and squeezed and deformed between the first pipe fitting 31 and the second pipe fitting 32, and the deformed sealing member 34 will fill the clearance space 333 to further achieve its sealing effect. At this time, the air replenishment structure 3 is installed;

[0079] When it is necessary to remove the parts on the air supply structure 3 for repair or replacement, the operation steps can be reversed according to the steps during installation;

[0080] After the air supply structure 3 is installed, during the use of the fixed conical valve 1, when the fixed conical valve 1 is opened, the force of the water flow impact on the connecting sleeve 33 can drive the connecting sleeve 33 to have a tendency to further threadedly cooperate with the second pipe fitting 32, so that the air supply structure 3 can maintain stable and reliable structural strength and sealing during this process.

[0081] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A vibration and noise reduction device for a fixed conical valve, arranged on a fixed conical valve (1), the fixed conical valve (1) comprising a valve body (11), a flow deflector (12), a water inlet pipe (13) and a water outlet pipe (14), the flow deflector (12) having a cavity (121) inside, the valve body (11) being fixedly connected to the flow deflector (12) in the cavity (121), the water inlet pipe (13) being fixedly connected to one end of the flow deflector (12), the water outlet pipe (14) being fixedly connected to the other end of the flow deflector (12), the water inlet pipe (13) being connected and communicating with the valve body (11), and the water outlet pipe (14) being communicated with the cavity (121), characterized in that: It comprises a plurality of air supply pipes (2) and a plurality of air supply structures (3), wherein an annular negative pressure area (122) is formed in the cavity (121) on a side of the valve body (11) close to the water outlet pipe (14); The air supply pipe (2) is located outside the guide cover (12), one end of which is fixedly connected to the peripheral side of the guide cover (12) and communicates with the cavity (121), and is capable of supplying air to a position on the peripheral side of the valve body (11) in the cavity (121); One end of the air replenishing structure (3) passes through the water outlet pipe (14), passes through the interior of the water outlet pipe (14), is located in the negative pressure area (122) and communicates with the cavity (121); The air supply structure (3) comprises a first pipe (31), a second pipe (32) and a connecting sleeve (33); One end of the first pipe member (31) has an L-shaped structure for forming a connection with the second pipe member (32); the second pipe member (32) passes through the water outlet pipe (14) along the radial direction of the water outlet pipe (14) and is fixedly connected to the water outlet pipe (14); the connecting sleeve (33) is movably connected to the second pipe member (32); one end of the first pipe member (31) located in the water outlet pipe (14) has a thread; the connecting sleeve (33) can be sleeved and threadedly matched with the end of the first pipe member (31); The first pipe member (31) has a plurality of positioning blocks (312) at the end where the connecting sleeve (33) is located, and the second pipe member (32) has a plurality of positioning grooves (321) at one end located in the water outlet pipe (14), and the positioning blocks (312) are adapted to the positioning grooves (321); When the positioning block (312) is plugged into the positioning groove (321), the direction of the end of the first pipe member (31) away from the second pipe member (32) is parallel to the center line of the valve body (11); The surface of the connecting sleeve (33) has a plurality of convex strips (334), the convex strips (334) extend along the axial direction of the connecting sleeve (33), and the plurality of convex strips (334) are distributed in a circular array with the axial line of the connecting sleeve (33) as the axis; The convex strip (334) has a force-bearing surface (3341) and a force-releasing surface (3342); the force-bearing surface (3341) is subjected to the force of the water flow, which can cause the connecting sleeve (33) to have a tendency to further thread-match with the first pipe (31); the force-releasing surface (3342) is an outwardly protruding arc surface and can guide the flow of water.

2. A vibration and noise reduction device for fixing a conical valve according to claim 1, characterized in that: A total of one air supply pipe (2) is included, wherein the air supply pipe (2) is located at the top of the air guide cover (12) and is centered relative to the air guide cover (12); A total of four of the air supply structures (3) are included, and the four air supply structures (3) are distributed in a circular array with the center line of the valve body (11) as the axis.

3. A vibration and noise reduction device for fixing a conical valve according to claim 1, characterized in that: The air replenishing structure (3) further comprises a sealing member (34); after the first pipe member (31) and the second pipe member (32) are connected via the connecting sleeve (33), the sealing member (34) is located inside the connecting sleeve (33) and between the first pipe member (31) and the second pipe member (32).

4. A vibration and noise reduction device for fixing a conical valve according to claim 3, characterized in that: The sealing member (34) is provided with a plurality of clearance holes for the positioning blocks (312) to pass through.

5. A vibration and noise reduction device for fixing a conical valve according to claim 4, characterized in that: The sealing member (34) is elastic, and the interior of the connecting sleeve (33) has a clearance space (333) for the sealing member (34) to fill after elastic deformation; after the first pipe member (31) and the second pipe member (32) are connected via the connecting sleeve (33), the sealing member (34) is squeezed and deformed between the first pipe member (31) and the second pipe member (32).

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