CN210510426U - Air valve for water hammer - Google Patents
Air valve for water hammer Download PDFInfo
- Publication number
- CN210510426U CN210510426U CN201921412562.1U CN201921412562U CN210510426U CN 210510426 U CN210510426 U CN 210510426U CN 201921412562 U CN201921412562 U CN 201921412562U CN 210510426 U CN210510426 U CN 210510426U
- Authority
- CN
- China
- Prior art keywords
- valve
- buffer
- floating ball
- valve body
- water hammer
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Details Of Valves (AREA)
Abstract
The utility model discloses a water hammer prevention air valve in valve technical field, include: the novel air valve comprises a valve body, a valve cover, a floating ball device, a floating ball protection net, a micro-exhaust assembly, an exhaust hood, a buffer body, a baffle and a buffer seat, wherein a step is arranged between the valve body and the valve cover, an O-shaped ring is placed to form sealing, the valve body and the valve cover are fixedly connected through a fixing bolt, an embedded notch is processed at the inner hole of the valve cover, a rubber sealing ring is placed, a floating ball is placed in the floating ball protection net, and the floating ball protection net is formed by welding a circular plate, 4. The pollution discharge assembly, the cleaning assembly, the micro exhaust assembly and the valve body are connected through threads. The buffer seat is placed on the step of the buffering body, and the baffle is located the buffer seat top, and the baffle passes through the screw thread and cushions the body coupling, the utility model discloses because the buffering body sets up buffer, slow down the water column speed of closing under the water hammer operating mode, effectively absorb and restrict the undulant range of water hammer.
Description
Technical Field
The utility model relates to the technical field of valves, specifically be a water hammer prevention air valve.
Background
In the prior art, the air valve has the structural form: the inside buffer seat that sets up of valve body, the buffer seat passes through the muscle to be connected with the valve body to this plays simple water hammer prevention effect, has following shortcoming: (1) when water conservancy transition occurs in the pipeline, the gas-liquid two phases of the pipeline have complex change states, interference factors cannot be predicted, gas in the pipeline is complex to discharge, and a closure water hammer which is more complex than a general water hammer cannot be eliminated. (2) The air exhaust is unstable, and a buffer seat arranged on a valve body (3) which possibly causes a large amount of water to rush out can influence the high-speed air suction and micro-exhaust processes, so that a water hammer prevention air valve is provided.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a water hammer prevention air valve to solve the problem of the closure water hammer that more difficult more eliminates than general water hammer in the current air valve structure, it is smooth and easy to inhale exhaust in-process passageway, and the leakproofness is good between each part, uses safe and reliable.
In order to achieve the above object, the utility model provides a following technical scheme: a water hammer prevention air valve comprises a valve body, a valve cover, a floating ball device, a floating ball protection net, a sealing ring, a cleaning assembly, a protection net, an exhaust hood, a lifting ring, a micro exhaust assembly, a buffer body, a baffle and a buffer seat, wherein the valve body comprises a medium inlet, a medium outlet, a sewage draining outlet, a micro exhaust port and a valve cavity, the axial direction of the medium inlet is coincided with the axial direction of the medium outlet, the valve cavity is positioned between the medium inlet and the outlet, the drift diameter of the valve cavity is larger than the drift diameter of the medium inlet, the drift diameter of the medium inlet is equal to the drift diameter of the medium outlet, a buffer board is cast at the bottom of the valve cavity, the buffer board and the valve cavity are coaxial, a small hole is arranged in the middle of the buffer board, the valve cover and the medium inlet are coaxial, the lifting ring is arranged on the valve cover, the sealing, the floating ball protection net is arranged in the valve cavity and is coaxial with the valve body, a groove is arranged on the outlet flange of the valve body, the floating ball protection net is placed on the groove at the outlet end of the valve body and is formed by welding a circular flat plate, 4 stand columns and a filter screen, the height of the circular flat plate is lower than the medium outlet plane of the valve body, the thickness of the circular flat plate is equal to that of the groove of the valve body, the 4 stand columns are positioned between the flat plate and the filter screen and are uniformly distributed at 90 degrees, the filter screen is in a small circular arc shape, the height of the floating ball protection net is higher than that of the buffer port, the protection net is formed by welding the circular filter screen, the protection net and the valve cover are coaxial, the protection net is positioned between the exhaust hood and the valve cover, and the buffer body and the valve body are coaxial and are connected through, the baffle is placed on the upper portion of the buffer body, and the buffer seat is placed between the baffle and the buffer body.
Furthermore, an O-shaped sealing ring is arranged between the bottom of the valve cover and the upper part of the valve body.
Furthermore, the middle part of the valve cover is provided with an embedded groove for placing the sealing ring.
Furthermore, a seam allowance is arranged between the valve body and the valve cover, a notch is formed in the valve body, and a convex opening is formed in the valve cover.
Further, the valve body is connected with the buffer body through a first bolt and a first nut.
Furthermore, the baffle plate and the buffer body are connected through a third bolt and a third nut, and a gasket is arranged at the joint.
Furthermore, the valve body, the valve cover and the inner and outer surfaces of the buffer body are covered with epoxy resin coatings.
Further, the exhaust hood and the valve cover are fixed through a second bolt and a second nut.
Compared with the prior art, the beneficial effects of the utility model are that:
1. the utility model has simple structure, novel and reasonable design and convenient manufacture and use;
2. the utility model reduces the manufacturing and processing difficulty of the floating ball device and the manufacturing and processing cost because the floating ball device adopts the spherical inner bottom counterweight;
3. the utility model has the advantages that the sealing performance is more reliable under the condition of closing because the floating ball device adopts the spherical structure without the upper and lower guide shafts under the condition of meeting the requirement of the flow area, and the leakage condition is more difficult to occur;
4. the utility model has the functions of high-speed exhaust without blowing blockage, preventing closing of a water hammer, throttling exhaust and air retention to form a buffer air bag to slow down water column bridging energy, ensuring safe water filling speed, continuously exhausting in trace amount to improve water delivery efficiency, high-speed suction during emptying of a pipeline to prevent negative pressure of the pipeline and the like;
5. the utility model discloses the throttle can throttle to causing the high-speed exhaust that the water hammer was closed to the cutout to the import department increase buffering body and buffer, can not breathe in at a high speed and the trace is exhausted and is caused any influence, can form the buffering air bag of guard action in the pipeline, reaches to reduce to close the water hammer energy, subducts the safe purpose of water hammer protection pipeline.
Drawings
Fig. 1 is a schematic structural view of the water hammer prevention air valve of the present invention in an open state;
fig. 2 is a schematic structural view of the water hammer air valve of the present invention in a closed state.
In the figure: 1. a blowdown assembly; 2. a buffer plate; 3. a valve body; 4. a floating ball protection net; 5. a floating ball device; 6. a seal ring; 7. a valve cover; 8. a first bolt; 9. a first nut; 10. an O-shaped sealing ring; 11. cleaning the assembly; 12. a protective net; 13. an exhaust hood; 14. a second nut; 15. a second bolt; 16. a hoisting ring; 17. a micro exhaust assembly; 18. a third nut; 19. a third bolt; 20. a gasket; 21. a buffer body; 22. a baffle plate; 23. a buffer seat.
The drawings are for illustrative purposes only and are not to be construed as limiting the patent; for the purpose of better illustrating the embodiments, certain features of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product; it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
The utility model provides a water hammer prevention air valve, because the buffer body is provided with the buffer device, the water column closing speed is slowed down under the working condition of the water hammer, and the fluctuation range of the water hammer is effectively absorbed and limited;
referring to fig. 1 and 2, the valve body 3 includes a medium inlet, a medium outlet, a drain outlet, a micro-exhaust port and a valve cavity, the axial direction of the medium inlet coincides with the axial direction of the medium outlet, the valve cavity is located between the medium inlet and the medium outlet, the drift diameter of the valve cavity is larger than that of the medium inlet, and the drift diameter of the medium inlet is equal to that of the medium outlet;
referring to fig. 1 and 2, a buffer plate 2 is cast at the bottom of the valve cavity, the buffer plate 2 and the valve cavity are coaxial, a small hole is formed in the middle of the buffer plate 2, a valve cover 7 and a medium inlet are coaxial, a lifting ring 16 is arranged on the valve cover 7, a sealing ring 6 is arranged on the inner side of the valve cover 7, and a cleaning component 11 is arranged at the top of the valve cover;
referring to fig. 1 and 2, a floating ball protection net 4 is arranged in a valve cavity, the floating ball protection net 4 and a valve body 3 are coaxial, a groove is arranged on an outlet flange of the valve body 3, the floating ball protection net 4 is placed on the groove at the outlet end of the valve body 3, the floating ball protection net 4 is formed by welding a circular flat plate, 4 upright posts and a filter screen, the height of the circular flat plate is lower than the medium outlet plane of the valve body 3, the thickness of the circular flat plate is equal to that of the groove of the valve body, the 4 upright posts are positioned between the flat plate and the filter screen, the upright posts are uniformly distributed;
referring to fig. 1 and 2, the floating ball protection net 4 is higher than the buffer opening, the protection net 12 is formed by welding a circular filter net, the protection net 12 and the valve cover 7 are coaxial, the protection net 12 is located between the exhaust hood 13 and the valve cover 7, the buffer body 21 and the valve body 3 are coaxial and connected through a bolt and a nut, the baffle 22 is placed on the upper portion of the buffer body 21, and the buffer seat 23 is placed between the baffle 22 and the buffer body 21.
Example (b): initial state of the valve: the floating ball device 5 of the water hammer prevention air valve is positioned inside the floating ball protection net 4, the lower end inside the floating ball is provided with the balance weight, the sealing surface of the floating ball is enabled to be upward all the time, the floating ball can perform the up-and-down motion without hindrance inside the protection net along the stand column under the action of the upward force in the vertical direction, and the exhaust passage between the floating ball and the cavity of the valve body 3 is in the state of the maximum flow area.
A high-speed exhaust state: when the pipeline is flushed with water and exhausted, high-speed airflow passes through the valve, enters the valve body 3 through the inlet at the lower part of the valve body 3, enters the upper part of the valve body 3 along the annular overflowing surface between the valve body 3 and the floating ball, and is exhausted into the atmosphere through the overflowing area between the protective screen 12 and the exhaust hood 13.
A throttling exhaust state: when the exhaust speed continues to rise, when the exhaust pressure difference is increased to a designed value, the opposite movement speed of the cut-off water column is accelerated to be about to close, the buffer plate 2 in the buffer body 21 is blown up by the airflow and contacts with the baffle ring, the exhaust area is reduced at the moment, the exhaust amount of the water hammer exhaust valve is reduced, part of gas is intercepted in the pipeline to form a buffer air bag, the closing speed of the water column moving in opposite directions is reduced, the closing kinetic energy is eliminated, at the moment, the exhaust through the holes of the buffer plate 2 and the baffle plate 22 is still carried out and is not closed, so that the air valve can not be caused to close the water hammer, and the formed buffer air bag can still effectively reduce the cut-off water column closing energy in the pipeline.
Valve closing and sealing state: when the gas in the pipeline is basically exhausted, the water level rises and enters the inner cavity of the valve body 3, the floating ball device 5 floats upwards to be lighter than water and contacts with the rubber sealing ring 6 on the valve cover 7 to form the sealing of the exhaust port, the specific sealing pressure of the sealing part is increased along with the rise of the water pressure in the valve body 3, the valve is closed, and the water and the gas cannot be exhausted through the valve.
A micro exhaust state: after the valve is closed, when gas is separated out from the pipeline, the gas is gradually gathered in the composite air valve body 3, when the gathered gas is increased and the gas pressure is increased to be greater than the pressure of water, the gas pressure keeps the sealing state of the exhaust port on one hand, on the other hand, the water level submerging the floating ball device 5 is lowered, the floating ball device 5 falls down to open the micro exhaust port of the micro exhaust assembly 17, micro exhaust is started, the gas pressure gathered at the position is reduced along with the micro exhaust, the water level is increased, the floating ball is raised along with the water level to seal the valve seat of the micro exhaust device, so the micro exhaust valve seat can enable the gas to be exhausted through the micro exhaust assembly 17, but the water cannot be exhausted, the functions of exhausting gas immediately, closing after exhausting, exhausting at intervals, exhausting only exhausting and not exhausting water are realized, and the gas appearing in the pipeline can be exhausted.
When the pipeline is in a negative pressure state due to pump stop and drainage emptying, the water level is reduced, the external air pressure is greater than the water pressure of the pipeline, the external air enables the floating ball device 5 to fall due to the reduction of the water pressure and the water level, the exhaust port is opened, and a large amount of external air can be sucked immediately to eliminate the vacuum of the pipeline.
An O-shaped sealing ring 10 is arranged between the bottom of the valve cover 7 and the upper part of the valve body 3.
The middle part of the valve cover 7 is provided with an embedded groove for placing the sealing ring 6.
A spigot is arranged between the valve body 3 and the valve cover 7, a notch is arranged on the valve body 3, and a convex opening is arranged on the valve cover 7.
The valve body 3 and the buffer body 21 are connected by a first bolt 8 and a first nut 9.
The baffle 22 and the buffer body 21 are connected through a third bolt 19 and a third nut 18, and a gasket 20 is arranged at the joint.
The valve body 3, the valve cover 7 and the inner and outer surfaces of the buffer body 21 are covered with epoxy resin coatings.
The exhaust hood 13 and the bonnet 7 are fixed to each other by a second bolt 15 and a second nut 14.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (8)
1. A water hammer resistant air valve characterized by: the floating ball type exhaust valve comprises a valve body (3), a valve cover (7), a floating ball device (5), a floating ball protection net (4), a sealing ring (6), a cleaning assembly (11), a protective net (12), an exhaust hood (13), a hanging ring (16), a micro exhaust assembly (17), a buffer body (21), a baffle (22) and a buffer seat (23), wherein the valve body (3) comprises a medium inlet, a medium outlet, a sewage draining outlet, a micro exhaust port, a buffer port and a valve cavity, the axial direction of the medium inlet is coincident with the axial direction of the medium outlet, the valve cavity is positioned between the medium inlet and the outlet, the drift diameter of the valve cavity is larger than that of the medium inlet, the drift diameter of the medium inlet is equal to that of the medium outlet, a buffer plate (2) is cast at the bottom of the valve cavity, the buffer plate (2) and the valve cavity are coaxial, and a small hole is arranged, the valve cover (7) and the medium inlet are in the same axial direction, the valve cover (7) is provided with a lifting ring (16), the inner side of the valve cover (7) is provided with a sealing ring (6), the top of the valve cover is provided with a cleaning component (11), the floating ball protection net (4) is arranged in the valve cavity, the floating ball protection net (4) and the valve body (3) are in the same axial direction, the outlet flange of the valve body (3) is provided with a groove, the floating ball protection net (4) is arranged on the outlet end groove of the valve body (3), the floating ball protection net (4) is formed by welding a circular flat plate, 4 upright posts and a filter screen, the height of the circular flat plate is lower than the medium outlet plane of the valve body (3), the thickness of the circular flat plate is equal to the groove of the valve body, the 4 upright posts are positioned between the flat plate and the filter screen, floater protection net (4) highly is higher than the buffering mouth, protection network (12) form for the welding of circular filter screen, protection network (12) and valve gap (7) are coaxial, protection network (12) are located exhaust hood (13) with between valve gap (7), the buffering body (21) with valve body (3) are coaxial and connect through bolt and nut, baffle (22) are placed buffering body (21) upper portion, buffer seat (23) are placed baffle (22) with between the buffering body (21).
2. The water hammer preventing air valve of claim 1, wherein: an O-shaped sealing ring (10) is arranged between the bottom of the valve cover (7) and the upper part of the valve body (3).
3. The water hammer preventing air valve of claim 1, wherein: the middle part of the valve cover (7) is provided with an embedded groove for placing the sealing ring (6).
4. The water hammer preventing air valve of claim 1, wherein: a spigot is arranged between the valve body (3) and the valve cover (7), a notch is arranged on the valve body (3), and a convex opening is arranged on the valve cover (7).
5. The water hammer preventing air valve of claim 1, wherein: the valve body (3) is connected with the buffer body (21) through a first bolt (8) and a first nut (9).
6. The water hammer preventing air valve of claim 1, wherein: the baffle (22) and the buffer body (21) are connected through a third bolt (19) and a third nut (18), and a gasket (20) is arranged at the joint.
7. The water hammer preventing air valve of claim 1, wherein: the valve body (3), the valve cover (7) and the inner and outer surfaces of the buffer body (21) are covered with epoxy resin coatings.
8. The water hammer preventing air valve of claim 1, wherein: the exhaust hood (13) and the valve cover (7) are fixed through a second bolt (15) and a second nut (14).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921412562.1U CN210510426U (en) | 2019-08-28 | 2019-08-28 | Air valve for water hammer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921412562.1U CN210510426U (en) | 2019-08-28 | 2019-08-28 | Air valve for water hammer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210510426U true CN210510426U (en) | 2020-05-12 |
Family
ID=70545107
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921412562.1U Active CN210510426U (en) | 2019-08-28 | 2019-08-28 | Air valve for water hammer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210510426U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112049970A (en) * | 2020-09-11 | 2020-12-08 | 山东水发黄水东调工程有限公司 | Water hammer prevention air valve capable of automatically alarming and using method thereof |
| CN118066307A (en) * | 2024-04-18 | 2024-05-24 | 天虹阀门科技（泉州）有限公司 | Combined type high-speed air inlet and outlet valve |
-
2019
- 2019-08-28 CN CN201921412562.1U patent/CN210510426U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112049970A (en) * | 2020-09-11 | 2020-12-08 | 山东水发黄水东调工程有限公司 | Water hammer prevention air valve capable of automatically alarming and using method thereof |
| CN118066307A (en) * | 2024-04-18 | 2024-05-24 | 天虹阀门科技（泉州）有限公司 | Combined type high-speed air inlet and outlet valve |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN210510426U (en) | Air valve for water hammer | |
| WO2016192603A1 (en) | Water hammer-proof air valve and water hammer-proof exhaust method for in-use pipeline | |
| CN210510493U (en) | Water hammer-proof air valve | |
| CN103939660A (en) | Floating ball self-sucking valve with lever structure and design method thereof | |
| CN202215795U (en) | Drainage device | |
| CN211113964U (en) | Siphon device | |
| CN108591132B (en) | Vacuum adsorption type pumping device | |
| CN210461885U (en) | Combined type air valve | |
| CN204828917U (en) | Waterproof hammer air valve | |
| CN207145661U (en) | A kind of three hole air bleeding valves | |
| CN2221139Y (en) | Water pump automatic intake and exhaust valve | |
| CN202418791U (en) | Quick energy-saving vent valve | |
| CN216205425U (en) | Self-adaptive vacuum water replenishing device | |
| CN202691192U (en) | Combined type exhaust valve | |
| CN216201037U (en) | Antiseized air valve of preventing leaking | |
| WO2023024297A1 (en) | Dual-waterway flush valve for preventing siphon backflow | |
| CN107166058A (en) | A kind of three hole air bleeding valves | |
| CN209569391U (en) | A kind of Combined type air inlet | |
| CN208490612U (en) | Natural atmosphere pressure difference multilayer abnormal shape fish jar | |
| CN213451897U (en) | Cylinder type high-pressure air valve | |
| CN104964118B (en) | A kind of composite exhaust valve | |
| CN215718941U (en) | Negative pressure water discharging device | |
| CN221374695U (en) | Floating ball structure for exhaust valve | |
| CN211693730U (en) | Valve capable of being automatically closed | |
| CN212203183U (en) | Novel baffle valve |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |