A new type of waterproof hammer air valve

Abstract

The utility model discloses a novel waterproof hammer air valve relates to waterproof hammer air valve technical field, including valve body, the cavity of valve body is provided with the float ball, the valve cover is connected with valve body through bolt, the outer surface of valve cover is installed with micro -switch, the inside fixed mounting of valve cover has the touch pole, and the touch pole one end goes into the secondary valve petal lower end position, and the other end is contacted with micro -switch, the outer surface fixed connection of valve cover has waterproof cover, the outlet pipe is linked together with valve cover, and the outlet pipe is installed with solenoid valve away from valve cover one end, the screw rod is connected with valve cover screw thread, and the outer surface screw thread connection of screw rod has fixed nut. The utility model discloses compared with ordinary waterproof hammer air valve, has the function of slowing down the water filling speed, and also has the function of preventing the water hammer, compared with the air injection micro - exhaust air valve, can promptly discharge the airbag of preventing the water hammer effect, prevents producing pipe normal operation time gas blockage and other harm.

Description

Technical Field

[0001] This utility model relates to the technical field of air valves for waterproof hammers, specifically a novel air valve for waterproof hammers. Background Technology

[0002] Water hammer air valve, also known as water hammer exhaust valve, is a product that has the functions of a traditional composite air valve, but its operation is more reliable. It can be regarded as an upgraded version of the composite air valve. Its main function is to prevent a large amount of water from splashing during the exhaust process and reduce the impact on the inside of the exhaust valve, thus extending the service life of the exhaust valve.

[0003] Conventional water hammer air valves are mainly composite air valves with a buffer plate. Some models have the buffer plate installed before the main valve, while others have it installed after the main valve. The working principle is that during exhaust, the gas pressure pushes the buffer plate up to block the orifice, and the gas is exhausted from the central hole of the buffer plate, slowing down the exhaust speed. This slows down the water filling speed in the pipeline and prevents water hammer when the pump stops and the pipe bursts. During intake, the buffer plate descends due to gravity, and the intake air enters the pipeline from the large orifice, forming a high-speed, high-volume intake function to prevent negative pressure water hammer.

[0004] These types of water hammer air valves attempt to simultaneously prevent water hammer formation and slow down the filling rate. However, slowing down the filling rate requires a medium-diameter vent, while preventing water hammer formation requires a small-diameter vent. These two diameters are contradictory, resulting in either a very slow filling rate or a very high water hammer. To address these issues, we provide a new type of water hammer air valve. Utility Model Content

[0005] The purpose of this utility model is to make up for the shortcomings of the existing technology and provide a new type of water hammer air valve. Compared with ordinary water hammer air valves, this device has the function of slowing down the water filling speed and has the function of preventing water hammer. Compared with air injection micro-discharge air valve, it can promptly remove the air bag that prevents water hammer, thus preventing hazards such as air blockage during normal pipeline operation.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a novel waterproof hammer air valve, comprising:

[0007] The valve body has a float ball installed inside its cavity;

[0008] A valve cover is connected to the valve body by bolts. A micro switch is installed on the outer surface of the valve cover. A contact rod is installed inside the valve cover, with one end of the contact rod extending into the lower end of the secondary valve disc and the other end in contact with the micro switch. A waterproof cover is fixedly connected to the outer surface of the valve cover.

[0009] An outlet pipe is connected to the valve cover, and a solenoid valve is installed at the end of the outlet pipe away from the valve cover.

[0010] A screw is fixed to the valve cover. A fixing nut is threaded onto the outer surface of the screw. A protective cover is detachably provided on the outer surface of the screw. A secondary valve disc is installed between the valve cover and the protective cover. A secondary valve seat is provided inside the valve cover. A spring is detachably provided between the valve cover and the secondary valve seat.

[0011] A micro-vent valve is installed on the outer surface of the valve body and is used to release micro-gases from inside the anti-hammer air valve.

[0012] Furthermore, the valve body is equipped with a detachable protective sleeve, which is slidably connected to the float. By providing the protective sleeve, the float can be protected and guided, thereby preventing water hammer damage.

[0013] Furthermore, a pressure gauge is installed on the outer surface of the valve body for displaying the internal pressure of the anti-hammer air valve. By setting the pressure gauge, the internal pressure of the anti-hammer air valve can be easily monitored and displayed.

[0014] Furthermore, the valve body is equipped with a PLC control system for intelligent control of the solenoid valve and micro switch. By setting up the PLC control system, the solenoid valve and micro switch inside the water hammer air valve can be intelligently controlled, thereby improving the convenience and intelligence of use.

[0015] Furthermore, a main sealing ring is provided between the valve body and the valve cover to improve the sealing performance at the connection. By providing the main sealing ring, the sealing performance at the connection between the valve body and the valve cover can be improved.

[0016] Compared with existing technologies, this new type of anti-hammer air valve has the following advantages:

[0017] 1. Compared with ordinary water hammer air valves, this utility model has the function of slowing down the water filling speed and the function of preventing water hammer. Compared with air injection micro-discharge air valves, it can promptly remove the air bladder that prevents water hammer, thus preventing hazards such as air blockage during normal pipeline operation.

[0018] 2. This utility model, by setting a protective cylinder, can protect the float and guide its movement, thereby preventing water hammer damage. By setting a pressure gauge, it can easily monitor and display the internal pressure of the water hammer air valve. By setting a PLC control system, it can easily and intelligently control the solenoid valve and micro switch inside the water hammer air valve. By setting a main sealing ring, it can improve the sealing performance at the connection between the valve body and the valve cover. Attached Figure Description

[0019] Figure 1This is a front view of the three-dimensional structure of this utility model;

[0020] Figure 2 This is a schematic diagram of the three-dimensional structure of the exhaust system of this utility model;

[0021] Figure 3 This is a schematic diagram of a partial structure of the present invention. Figure 1 ;

[0022] Figure 4 This is a schematic diagram of a partial structure of the present invention. Figure 2 .

[0023] Figure label:

[0024] 1. Valve body; 2. Protective cylinder; 3. Float; 4. Pressure gauge; 5. Solenoid valve; 6. PLC control system; 7. Outlet pipe; 8. Protective cover; 9. Fixing nut; 10. Spring; 11. Secondary valve disc; 12. Screw; 13. Secondary valve seat; 14. Micro switch; 15. Contact rod; 16. Micro exhaust valve; 17. Valve cover; 18. Main sealing ring; 19. Waterproof cover. Detailed Implementation

[0025] The principles and features of this utility model are described below with reference to the accompanying drawings. The examples given are only for explaining this utility model and are not intended to limit the scope of this utility model.

[0026] As described in the background section, existing water hammer prevention air valves require a medium-diameter vent to slow down the water filling rate, while requiring a small-diameter vent to prevent water hammer formation. These two diameters are contradictory, resulting in either a very slow water filling rate or a high water hammer formation. To address this, this embodiment provides a novel water hammer prevention air valve. Compared to ordinary water hammer prevention air valves, this device has both a water filling rate slowing function and a water hammer prevention function. Compared to micro-venting air valves, it can promptly remove the air pockets that prevent water hammer formation, thus preventing hazards such as air blockage during normal pipeline operation.

[0027] See Figure 1 - Figure 4 This embodiment proposes a novel waterproof hammer air valve, comprising several parts including valve body 1, float ball 3, solenoid valve 5, outlet pipe 7, protective cover 8, fixing nut 9, spring 10, secondary valve disc 11, screw 12, secondary valve seat 13, micro switch 14, contact rod 15, micro exhaust valve 16, valve cover 17, and waterproof cover 19.

[0028] The valve body 1 and the valve cover 17 are connected by bolts to form the main structure of the water hammer air valve. The valve body 1 is equipped with a detachable protective cylinder 2, and the float 3 can slide vertically along the inside of the protective cylinder 2. The protective cylinder 2 can protect the float 3 and guide its movement, thereby preventing water hammer damage.

[0029] A main sealing ring 18 is provided between the valve body 1 and the valve cover 17 to improve the sealing performance of the connection. By providing the main sealing ring 18, the sealing performance of the connection between the valve body 1 and the valve cover 17 can be improved. In addition, the main valve of the waterproof hammer air valve in this utility model is sealed with a float ball 3 and a rubber ring 18.

[0030] A pressure gauge 4 is installed on the outer surface of the valve body 1 to display the internal pressure of the anti-hammer air valve. By setting the pressure gauge 4, the internal pressure of the anti-hammer air valve can be easily monitored and displayed.

[0031] A micro exhaust valve 16 is installed on the outer surface of the valve body 1 for the discharge of a small amount of gas inside the air valve to prevent water hammer. A micro switch 14 is installed on the outer surface of the valve cover 17. An outlet pipe 7 is connected to the outer surface of the valve cover 17. A solenoid valve 5 is installed at the end of the outlet pipe 7 away from the valve cover 17.

[0032] The valve body 1 is equipped with a PLC control system 6 for intelligent control of the solenoid valve 5 and the micro switch 14. By setting up the PLC control system 6, the solenoid valve 5 and the micro switch 14 in the water hammer air valve can be intelligently controlled, thereby improving the convenience and intelligence of use.

[0033] The PLC control system 6 is connected to the main pipeline system at one end and to the solenoid valve 5 at the other end. When the main pipeline is filled with water, the PLC control system 6 opens the solenoid valve 5 and closes the solenoid valve 5 when the filling is finished.

[0034] The valve cover 17 has a secondary valve seat 13 inside. A screw 12 is fixedly connected to the inner wall of the valve cover 17. A protective cover 8 is detachably provided on the outer surface of the screw 12. A secondary valve disc 11 is installed between the valve cover 17 and the protective cover 8. A spring 10 is detachably provided between the valve cover 17 and the secondary valve seat 13. A fixing nut 9 is threadedly connected to the outer surface of the screw 12.

[0035] The air valve for preventing water hammer has two openings: one is a medium-diameter outlet pipe 7 controlled by a solenoid valve 5, and the other is a large opening of the same diameter. The large opening is sealed by an inverted valve disc. The spring 10 is installed between the secondary valve seat 13 and the protective cover 8. The sealing surface of the secondary valve seat 13 faces downward. The protective cover 8 and the secondary valve disc 11 are connected as one unit, forming a structure in which the spring 10 supports the secondary valve disc 11.

[0036] A waterproof cover 19 is fixedly connected to the outer surface of the valve cover 17. A touch rod 15 is installed inside the valve cover 17, with one end of the touch rod 15 extending into the lower end of the secondary valve disc 11 and the other end in contact with the micro switch 14.

[0037] When the secondary valve disc 11 descends, it pushes the contact rod 15 to rotate, which in turn pushes the starter plate of the micro switch 14. The micro switch 14 sends a signal to the PLC control system 6 to adjust the opening and closing of the solenoid valve 5.

[0038] The components in the accompanying drawings of this utility model are for styling reference only and are not specific dimensional standards. The specific dimensions are determined according to the actual production requirements, and the materials of each component can be replaced accordingly based on actual needs.

[0039] All electrical components in this invention are commercially available, conventional equipment known to those skilled in the art. Models can be selected or customized according to actual needs. The setting method, installation method, and electrical connection method can be easily understood by those skilled in the art by following the instructions for use, and will not be described in detail here.

[0040] Working principle: When the pipeline is dry and not running, the float ball 3 falls to the bottom of the protective cylinder 2, the solenoid valve 5 closes, and the secondary valve disc 11, supported by the spring 10, maintains a small distance between its upper rubber sealing surface and the secondary valve seat 13. When the pipeline is filled with water for the first time, gas in the pipeline enters the inlet of the valve body 1 at high speed, passes through the protective cylinder 2 and the main sealing ring 18, and enters the cavity of the valve cover 17. The gas pressure acts on the lower end face of the secondary valve disc 11, pushing the secondary valve disc 11 to rise and contact the secondary valve seat 13 for sealing. At this time, the PLC control system 6 opens the solenoid valve 5, and the gas in the cavity of the valve cover 17 is discharged from the solenoid valve 5 into the atmosphere. Moreover, the diameter area of ​​the solenoid valve 5 is only 1 / 4 of the air inlet area of ​​the exhaust valve, which slows down the exhaust speed, thus slowing down the water filling speed of the pipeline and preventing water hammer from occurring when the exhaust valve is closed. See Figure 1 and Figure 3 .

[0041] When the pipeline is filled with water, the pipeline and valve body 1 are pneumatically purged. The float ball 3 floats and rises under the action of water and contacts the main sealing ring 18, closing the main valve. The solenoid valve 5 closes under the control of the PLC control system 6. The secondary valve disc 11 loses its air pressure support and also falls under the action of gravity, separating from the contact with the secondary valve seat 13. Water will generate a small amount of gas during pipeline operation. The small amount of gas accumulates in the cavity of valve body 1. After reaching a certain amount, the gas enters the micro exhaust valve 16 and is then discharged into the atmosphere.

[0042] When the pump stops or a pipe bursts, the water column in the pipeline separates, creating negative pressure. The float 3 loses its water support and falls to the bottom of the protective cylinder 2. The secondary valve 11 also descends under the negative pressure. A large amount of atmospheric gas enters the pipeline at high speed from the exhaust valve, disrupting the vacuum and preventing pipeline damage. Furthermore, as the secondary valve 11 descends, it pushes the contact rod 15 to rotate, which in turn actuates the starter plate of the microswitch 14. The microswitch 14 sends a signal to the PLC control system 6. (See...) Figure 4 ;

[0043] When the water column in the pipeline backflushs at high speed to close the gap, the air pressure backflushes the secondary valve disc 11, causing it to rise and contact the secondary valve seat 13 to close. Figure 3 At this time, the gas in the pipeline can only be slowly discharged from the micro exhaust valve 16, leaving a large amount of gas in the pipeline, forming an air bladder. The high-speed backflowing water column is slowly decelerated by the air bladder, thus achieving the purpose of eliminating water hammer.

[0044] After the secondary valve disc 11 rises, it disengages from the contact rod 15. The contact rod 15 then disengages from the micro switch 14. The micro switch 14 sends a signal to the PLC control system 6. Five to six minutes after this signal is generated, the PLC control system 6 opens the solenoid valve 5. After the water hammer is eliminated, the air bladder that was originally in the pipeline has lost its function. Leaving it in the pipeline would cause the danger of slug flow. The gas in the air bladder will be discharged from the solenoid valve 5, and water will enter the cavity of the valve body 1, causing the float ball 3 to rise and contact the main sealing ring 18 for sealing. After that, the PLC control system 6 controls the solenoid valve 5 to close.

Claims

1. A novel air valve for preventing water hammer, characterized in that: include: Valve body (1), and a float (3) is provided in the cavity of the valve body (1); A valve cover (17) is connected to the valve body (1) by bolts. A micro switch (14) is installed on the outer surface of the valve cover (17). A touch rod (15) is installed inside the valve cover (17). One end of the touch rod (15) extends into the lower end of the secondary valve disc (11), and the other end contacts the micro switch (14). A waterproof cover (19) is fixedly connected to the outer surface of the valve cover (17). The outlet pipe (7) is connected to the valve cover (17), and a solenoid valve (5) is installed at the end of the outlet pipe (7) away from the valve cover (17). A screw (12) is fixed to the valve cover (17). A fixing nut (9) is threaded onto the outer surface of the screw (12). A protective cover (8) is detachably provided on the outer surface of the screw (12). A secondary valve disc (11) is installed between the valve cover (17) and the protective cover (8). A secondary valve seat (13) is provided inside the valve cover (17). A spring (10) is detachably provided between the valve cover (17) and the secondary valve seat (13). A micro-vent valve (16) is installed on the outer surface of the valve body (1) for the discharge of micro-gas inside the air valve to prevent water hammer.

2. The novel waterproof hammer air valve according to claim 1, characterized in that: The valve body (1) is provided with a detachable protective cylinder (2) inside, and the protective cylinder (2) is slidably connected to the float (3).

3. The novel waterproof hammer air valve according to claim 1, characterized in that: A pressure gauge (4) for displaying the internal pressure of the air valve for preventing water hammer is installed on the outer surface of the valve body (1).

4. The novel waterproof hammer air valve according to claim 1, characterized in that: The valve body (1) is externally equipped with a PLC control system (6) for intelligent control of the solenoid valve (5) and the micro switch (14).

5. A novel waterproof hammer air valve according to claim 1, characterized in that: A main sealing ring (18) is provided between the valve body (1) and the valve cover (17) to improve the sealing performance of the connection.

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