A high-pressure solenoid valve with manual opening to prevent water hammer

Abstract

The present invention discloses a high-pressure solenoid valve with manual opening that is anti-water hammer. The key points of its technical solution are: it comprises a valve body, a water inlet and a water outlet are respectively arranged on both sides of the bottom of the valve body, a piston assembly is movably installed inside the upper end of the valve body, a valve cover is fixedly installed on the top of the valve body, a first O-ring is fixedly installed on the inner side of the top of the valve cover, an iron core assembly is slidably installed inside the valve cover, the bottom of the iron core assembly is fixedly connected to the inner part of the upper end of the piston assembly, an iron core spring is sleeved on the outer side of the lower end of the iron core assembly, and the iron core spring is arranged inside the valve cover, a rotating handle is rotatably connected to the right side of the upper end of the valve cover, and the left end of the rotating handle is clamped with the right side of the lower end of the iron core assembly, and by arranging a magnetic isolation tube with a three-section structural design, it is possible to achieve the maximum magnetic force with the minimum coil power, and the copper pad and the return spring are used to prevent the Y-ring from falling off and enhance the sealing effect at the same time.

Description

Technical Field

[0001] The invention relates to the technical field of fire extinguishing and fire fighting, and in particular to a high-pressure solenoid valve with a waterproof hammer and a manual opening. Background Art

[0002] In fire extinguishing systems, fire extinguishing agents are generally stored in a centralized manner, and multiple fire extinguishing points are controlled by solenoid valves, and the pressure can even be as high as 50kg. The control solenoid valves on the market now have two fatal flaws. First, the pressure is too low, not exceeding 2kg, and the actual fire extinguishing must first start the solenoid valve, and then start the fire extinguishing agent bottle head valve. Once a fire breaks out, the pressure is transmitted to the pipeline. If a second fire extinguishing point appears, the solenoid valve will not be able to open, causing serious consequences. Second: pressure shock. Usually, the solenoid valve relies on the pressure difference to open the solenoid valve. Usually, once the pressure of the solenoid valve is too high, it will cause serious water hammer shock. Instantly, the entire fire protection system will be instantly opened by the impact force, resulting in the loss of fire extinguishing agent and serious pressure loss, and will also cause pollution caused by the instantaneous injection of fire extinguishing agent. This requires a high-pressure 50kg solenoid valve that is resistant to water hammer shock to solve this series of problems. Summary of the invention

[0003] In view of the problems mentioned in the background technology, the purpose of the present invention is to provide a high-pressure solenoid valve that can be manually opened without water hammer to solve the problems mentioned in the background technology.

[0004] The above technical objectives of the present invention are achieved through the following technical solutions:

[0005] A high-pressure solenoid valve with a manual opening to prevent water hammer comprises a valve body, a water inlet and a water outlet are respectively arranged on both sides of the bottom of the valve body, a piston assembly is movably installed inside the upper end of the valve body, a valve cover is fixedly installed on the top of the valve body, a first O-ring is fixedly installed on the inner side of the top of the valve cover, an iron core assembly is slidably installed inside the valve cover, the bottom of the iron core assembly is fixedly connected to the inner part of the upper end of the piston assembly, an iron core spring is sleeved on the outer side of the lower end of the iron core assembly, and the iron core spring is arranged inside the valve cover, a rotating handle is rotatably connected to the right side of the upper end of the valve cover, the left end of the rotating handle is clamped with the right side of the lower end of the iron core assembly, and the iron core assembly A magnetic isolation tube is sleeved on the outside, a coil is wound around the outside of the magnetic isolation tube, a rubber pad is provided in the middle of the inner side of the magnetic isolation tube, a Y-ring is fixedly installed on the bottom of the rubber pad, a copper pad is clamped on the bottom of the Y-ring, a return spring is fixedly installed on the bottom of the copper pad, the bottom of the return spring is sleeved on the outer side of the upper end of the core assembly, a magnetic pad is fixedly connected to the outer side of the upper end of the magnetic isolation tube, a corrugated pad is fixedly connected to the top of the magnetic pad on the outer side of the upper end of the magnetic isolation tube, an induction switch is fixedly installed on the top of the magnetic isolation tube through an external hexagonal nut, a third O-ring is provided on the outer side of the inner middle of the induction switch, and a pressure relief groove is provided at the connection between the core assembly and the piston assembly.

[0006] By adopting the above technical solution, through the mutual cooperation of the piston assembly structure and the water inlet and the water outlet, and the buckling structure of the piston spring, the fourth O-ring and the fifth O-ring, water hammer impact can be effectively prevented, thereby improving the stability of the solenoid valve when in use;

[0007] By setting up a magnetic isolation tube with a three-stage structure design, it is possible to achieve the maximum magnetic force with the minimum coil power. The copper pad and the return spring are to prevent the Y-ring from falling off and to enhance the sealing effect.

[0008] Through the design of the induction switch and the entire valve body structure, it can effectively prevent external leakage and ensure the normal operation of the solenoid valve under high pressure. At the same time, the entire solenoid valve can withstand a maximum pressure of 50kg, and the space volume is maximized, which is convenient for serial installation.

[0009] Preferably, the core assembly includes a movable core, which is movably connected to the inside of the valve cover, a push rod is fixedly connected to the top of the movable core, and the push rod is movably connected to the inside of the magnetic isolation tube, and a seal is fixedly installed on the bottom of the movable core, and the seal is arranged on the inner side of the top of the piston assembly.

[0010] By adopting the above technical solution, when the solenoid valve opens the water inlet and outlet, the pressure on the upper part of the piston assembly can be buffered by the iron core spring, and the push rod can touch the induction switch, which cooperates with the Y-ring to achieve a sealing effect.

[0011] Preferably, the magnetic isolation tube includes a soft magnetic tube seat, which is sleeved on the outer side of the upper end of the iron core assembly, a stainless steel tube is fixedly installed on the top of the soft magnetic tube seat, a soft magnetic core is fixedly installed on the top of the stainless steel tube, and the induction switch is fixedly installed inside the soft magnetic core.

[0012] By adopting the above technical solution, the three-stage design of soft magnetic tube seat, stainless steel tube and soft magnetic core can maximize the magnetic structure and achieve the maximum magnetic purpose with the minimum coil power. The upper part of the soft magnetic core is used to place the signal sensing switch, and the lower part is used to place the Y-shaped ring.

[0013] Preferably, the piston assembly includes a base, which is movably mounted inside the upper end of the valve body, a sealing plug is fixedly mounted on the inner side of the upper end of the base via a fourth O-ring, a guide valve port is provided in the middle of the sealing plug, the inner side of the sealing plug is fixedly connected to the lower end of the core assembly via a fifth O-ring, the size of the sealing plug corresponds to the size of the inner side of the base, and the piston spring is sleeved on the outer side of the sealing plug.

[0014] By adopting the above technical solution, the outer diameter of the sealing plug is as close to the size of the sealing surface area as possible, and a piston spring is added to enhance the sealing effect and better prevent water hammer. The fourth O-ring and the fifth O-ring are designed in the sealing plug. When the solenoid valve is powered on or manually opened, the fourth O-ring and the fifth O-ring cooperate with the movable iron core to drive the sealing plug to move upward, thereby opening the pilot valve port.

[0015] Preferably, a pin handle is fixedly connected to the right side of the rotating handle, and a protrusion is provided at the lower end of the left side of the rotating handle, and the protrusion is fit-connected to the bottom right side of the lower end of the core assembly.

[0016] By adopting the above technical solution, when the system has no power supply or the power supply fails to start, the rotating handle can be driven to rotate by rotating the pin handle. At this time, the protrusion applies force to the iron core assembly to open the pilot valve port.

[0017] Preferably, a hexagon socket screw is threadedly connected to the outer side of the upper end of the top of the valve cover, and a pin and a spring washer are provided on the inner side of the hexagon socket screw.

[0018] By adopting the above technical solution, the hexagon socket screw and the spring washer cooperate with each other to install the pin more stably.

[0019] A groove is provided on the surface of the rotating handle at a position corresponding to the pin, and a second O-ring is provided on the outer side of the left end of the rotating handle.

[0020] By adopting the above technical solution, the second O-ring has a sealing effect, and the pin can cooperate with the groove under high pressure, thereby preventing the rotating handle from popping out.

[0021] In summary, the present invention mainly has the following beneficial effects:

[0022] First, through the cooperation between the piston assembly structure and the water inlet and the water outlet, and the buckling structure of the piston spring, the fourth O-ring and the fifth O-ring, water hammer impact can be effectively prevented, thereby improving the stability of the solenoid valve during use;

[0023] Second, by setting up a magnetic isolation tube with a three-stage structure design, the maximum magnetic force can be achieved with the minimum coil power. The copper pad and the return spring are to prevent the Y-ring from falling off and strengthen the sealing effect;

[0024] Third, through the design of the induction switch and the entire valve body structure, it can effectively prevent external leakage and effectively reduce the solenoid valve working normally under high pressure. At the same time, the entire solenoid valve can withstand a maximum pressure of 50kg, and the space volume is maximized, which is convenient for continuous installation. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the structure of the present invention;

[0026] Figure 2 It is a schematic diagram of the structure of the core assembly of the present invention;

[0027] Figure 3 It is a schematic diagram of the structure of the magnetic isolation tube of the present invention;

[0028] Figure 4 It is a schematic diagram of the structure of the piston assembly of the present invention;

[0029] Figure 5 It is a side structural diagram of the present invention.

[0030] 1. Valve body; 2. Piston spring; 3. Water outlet; 4. Piston assembly; 5. Valve cover; 6. First O-ring; 7. Core spring; 8. Core assembly; 9. Copper gasket; 10. Y-ring; 11. Magnetic isolation tube; 12. Magnetic gasket; 13. Corrugated gasket; 14. External hexagonal nut; 15. Induction switch; 16. Third O-ring; 17. Rubber gasket; 18. Rebound spring; 19. Coil; 20. Internal hexagonal screw; 21. Pin; 22. Spring gasket; 23. Second O-ring; 24. Turning handle; 25. Pin handle; 26. Seal; 27. Movable iron core; 28. Push rod; 29. ​​Soft magnetic tube seat; 30. Stainless steel tube; 31. Soft magnetic core; 32. Base; 33. Fourth O-ring; 34. Sealing plug; 35. Fifth O-ring; 36. Pressure relief groove; 37. Water inlet. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0032] Example

[0033] refer to Figure 1-5, a high-pressure solenoid valve with manual opening and anti-water hammer belt, comprising a valve body 1, a water inlet 37 and a water outlet 3 are respectively provided on both sides of the bottom of the valve body 1, a piston assembly 4 is movably installed inside the upper end of the valve body 1, a valve cover 5 is fixedly installed on the top of the valve body 1, a first O-ring 6 is fixedly installed on the inner side of the top of the valve cover 5, an iron core assembly 8 is slidably installed inside the valve cover 5, the bottom of the iron core assembly 8 is fixedly connected to the upper end of the piston assembly 4, an iron core spring 7 is sleeved on the outer side of the lower end of the iron core assembly 8, and the iron core spring 7 is arranged inside the valve cover 5, a rotating handle 24 is rotatably connected to the right side of the upper end of the valve cover 5, the left end of the rotating handle 24 is clamped with the right side of the lower end of the iron core assembly 8, and a magnetic isolation tube 11 is sleeved on the outer side of the iron core assembly 8 A coil 19 is wound around the outside of the magnetic isolation tube 11, a rubber pad 17 is provided in the middle of the inner side of the magnetic isolation tube 11, a Y-shaped ring 10 is fixedly installed at the bottom of the rubber pad 17, a copper pad 9 is clamped at the bottom of the Y-shaped ring 10, a return spring 18 is fixedly installed at the bottom of the copper pad 9, and the bottom of the return spring 18 is sleeved on the outer side of the upper end of the core assembly 8, a magnetic pad 12 is fixedly connected to the outer side of the upper end of the magnetic isolation tube 11, a corrugated pad 13 is fixedly connected to the top of the magnetic pad 12 on the outer side of the upper end of the magnetic isolation tube 11, an induction switch 15 is fixedly installed on the top of the magnetic isolation tube 11 through an external hexagonal nut 14, a third O-ring 16 is provided on the outer side of the inner middle of the induction switch 15, and a pressure relief groove 36 is provided at the connection between the core assembly 8 and the piston assembly 4;

[0034] Through the cooperation between the piston assembly 4 structure and the water inlet 37 and the water outlet 3, and the pressing structure of the piston spring 2, the fourth O-ring 33 and the fifth O-ring 35, water hammer impact can be effectively prevented, thereby improving the stability of the solenoid valve during use;

[0035] By setting up the magnetic isolation tube 11 with a three-stage structure design, it is possible to achieve the maximum magnetic force with the minimum power of the coil 19. The copper pad 9 and the return spring 18 are used to prevent the Y-ring 10 from falling off and strengthen the sealing effect.

[0036] Through the design of the induction switch 15 and the entire valve body 1 structure, it is not only effective to prevent external leakage, but also well reduce the solenoid valve working normally under high pressure. At the same time, the entire solenoid valve can withstand a maximum pressure of 50kg, and the space volume is extreme, which is convenient for serial installation.

[0037] refer to Figure 1-5, in order to improve stability and sealing; the iron core assembly 8 includes a movable iron core 27, the movable iron core 27 is movably connected to the inside of the valve cover 5, the top of the movable iron core 27 is fixedly connected to a push rod 28, the push rod 28 is movably connected to the inside of the magnetic isolation tube 11, and the bottom of the movable iron core 27 is fixedly installed with a seal 26, and the seal 26 is arranged on the inner side of the top of the piston assembly 4; when the solenoid valve opens the water inlet 37 and the water outlet 3, the pressure on the upper part of the piston assembly 4 can be buffered by the iron core spring 7, and the push rod 28 can touch the sensing switch 15, and cooperate with the Y-ring 10 to achieve a sealing effect.

[0038] refer to Figure 1 , Figure 3 and Figure 5 , in order to improve the power of the coil 19; the magnetic isolation tube 11 includes a soft magnetic tube seat 29, the soft magnetic tube seat 29 is sleeved on the outer side of the upper end of the core assembly 8, a stainless steel tube 30 is fixedly installed on the top of the soft magnetic tube seat 29, a soft magnetic core 31 is fixedly installed on the top of the stainless steel tube 30, and the induction switch 15 is fixedly installed inside the soft magnetic core 31; the three-stage design of the soft magnetic tube seat 29, the stainless steel tube 30, and the soft magnetic core 31 can maximize the magnetic structure and achieve the maximum magnetic purpose with the minimum power of the coil 19. The upper part of the soft magnetic core 31 is used to place the signal induction switch 15, and the lower part is used to place the Y-ring 10.

[0039] refer to Figure 1 , Figure 4 and Figure 5 , for the purpose of preventing water hammer impact; the piston assembly 4 includes a base 32, the base 32 is movably mounted inside the upper end of the valve body 1, and a sealing plug 34 is fixedly mounted on the inner side of the upper end of the base 32 through a fourth O-ring 33, and a pilot valve port is provided in the middle of the sealing plug 34, and the inner side of the sealing plug 34 is fixedly connected to the lower end of the core assembly 8 through a fifth O-ring 35, and the size of the sealing plug 34 corresponds to the size of the inner side of the base 32, and the piston spring 2 is sleeved on the outer side of the sealing plug 34; the outer diameter of the sealing plug 34 is as close to the size of the sealing surface area as possible, and the piston spring 2 is added to enhance the sealing effect and better play a role in water hammer impact, and the fourth O-ring 33 and the fifth O-ring 35 are designed in the sealing plug 34 so that when the solenoid valve is powered on or manually opened, the fourth O-ring 33 and the fifth O-ring 35 cooperate with the movable iron core 27 to drive the sealing plug 34 to move upward, thereby opening the pilot valve port.

[0040] refer to Figure 1 and Figure 5, in order to further improve the stability of the solenoid valve; a pin handle 25 is fixedly connected to the right side of the rotating handle 24, and a protrusion is provided at the lower end of the left side of the rotating handle 24, and the protrusion is fitted and connected to the bottom of the right side of the lower end of the iron core assembly 8, and a hexagon socket screw 20 is threadedly connected to the outer side of the upper end of the top of the valve cover 5, and a pin 21 and a spring washer 22 are provided on the inner side of the hexagon socket screw 20, and a second O-ring 23 is provided on the outer side of the left end of the rotating handle 24; when the system has no power supply or the power supply fails to start, the rotating handle 24 can be driven to rotate by rotating the pin handle 25. At this time, the protrusion applies force to the iron core assembly 8 to open the pilot valve port, and the hexagon socket screw 20 and the spring washer 22 cooperate with each other to install the pin 21 more stably, and the second O-ring 23 has a sealing effect, and the pin 21 can cooperate with the groove under high pressure to prevent the rotating handle 24 from popping out.

[0041] Principle and advantages of use: When in use, the automatic working principle, when in use, the coil 19 is energized, so that the movable iron core 27 is attracted upward, so that the water inlet 37 and the water outlet 3 at the pilot valve port are opened, and the water in the piston assembly 4 is emptied. Because the water intake is less than the water discharge, the piston assembly 4 forms a pressure difference up and down, pushing the sealing plug 34 to move upward, so that the pilot valve port is opened. As the movable iron core 27 moves upward, the push rod 28 touches the induction switch 15 and gives a feedback signal, thereby realizing automatic operation. The manual operation principle is to rotate the rotating handle 24 to a certain angle, drive the movable iron core 27 to move upward, open the pilot valve port, and empty the water in the piston assembly 4. Because the water intake is less than the water discharge, the sealing plug 34 forms a pressure difference up and down, and at the same time, with the help of water pressure thrust, the sealing plug 34 is pushed upward to open the valve body 1. As the movable iron core 27 moves upward, the push rod 28 touches the induction switch 15, giving a feedback signal, thereby completing the manual operation. In order to adapt to the reliability of the seal 26 under high pressure and reduce the structural space as much as possible, a piston structure with a fourth O-ring 33 buckled is used for sealing. It can not only achieve a better sealing effect, but also greatly extend the life of the seal 26 under high pressure and reduce the size of the valve body 1, saving space. When the solenoid valve opens the water inlet 37 and the water outlet 3, the pressure on the upper part of the piston assembly 4 can be buffered by the iron core spring 7, and the push rod 28 can touch the induction switch 15, and cooperate with the Y-ring 10 to achieve a sealing effect. The three-stage design of soft magnetic tube seat 29, stainless steel tube 30, and soft magnetic core 31 can maximize the magnetic structure and achieve the maximum magnetic purpose with the minimum coil 19 power. The upper part of the soft magnetic soft magnetic core 31 is used to place the signal sensing switch 15, and the lower part is used to place the Y-ring 10. The outer diameter of the sealing plug 34 is as close to the size of the sealing surface area as possible. At the same time, the piston spring 2 is added to enhance the sealing effect and better prevent water hammer. The fourth O-ring 33 and the fifth O-ring 35 are designed in the sealing plug 34. When the solenoid valve is powered on or manually opened, the fourth O-ring 33 and the fifth O-ring 35 cooperate with the movable iron core 27 to drive the sealing plug 34 to move upward, thereby opening the pilot valve port. When the system has no power or the power fails to start, the rotating handle 24 can be driven to rotate by rotating the pin handle 25. At this time, the protrusion applies force to the core assembly 8 to open the pilot valve port. The hexagon socket screw 20 and the spring washer 22 cooperate with each other to install the pin 21 more stably. The second O-ring 23 has a sealing effect. The pin 21 can cooperate with the groove under high pressure to prevent the rotating handle 24 from popping out.

[0042] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A high-pressure solenoid valve with manual opening to prevent water hammer, comprising a valve body (1), characterized in that: The bottom sides of the valve body (1) are respectively provided with a water inlet (37) and a water outlet (3); a piston assembly (4) is movably installed inside the upper end of the valve body (1); a valve cover (5) is fixedly installed on the top of the valve body (1); a first O-ring (6) is fixedly installed on the inner side of the top of the valve cover (5); an iron core assembly (8) is slidably installed inside the valve cover (5); the bottom of the iron core assembly (8) is fixedly connected to the upper end of the piston assembly (4); an iron core spring (7) is sleeved on the outer side of the lower end of the iron core assembly (8); the iron core spring (7) is arranged inside the valve cover (5); a rotating handle (24) is rotatably connected to the right side of the upper end of the valve cover (5); the left end of the rotating handle (24) is clamped with the right side of the lower end of the iron core assembly (8); a magnetic isolation tube (11) is sleeved on the outer side of the iron core assembly (8); the outer side of the magnetic isolation tube (11) is wound around A coil (19) is provided. A rubber pad (17) is provided in the middle of the inner side of the magnetic isolation tube (11). A Y-shaped ring (10) is fixedly installed at the bottom of the rubber pad (17). A copper pad (9) is clamped at the bottom of the Y-shaped ring (10). A return spring (18) is fixedly installed at the bottom of the copper pad (9). The bottom of the return spring (18) is sleeved on the outer side of the upper end of the iron core assembly (8). A magnetic pad (12) is fixedly connected to the outer side of the upper end of the magnetic isolation tube (11). A corrugated pad (13) is fixedly connected to the top of the magnetic pad (12) on the outer side of the upper end of the magnetic isolation tube (11). An induction switch (15) is fixedly installed at the top of the magnetic isolation tube (11) through an external hexagonal nut (14). A third O-shaped ring (16) is provided on the outer side of the inner middle side of the induction switch (15). A pressure relief groove (36) is provided at the connection between the iron core assembly (8) and the piston assembly (4). The core assembly (8) comprises a movable core (27), the movable core (27) being movably connected to the inside of the valve cover (5), a push rod (28) being fixedly connected to the top of the movable core (27), the push rod (28) being movably connected to the inside of the magnetic isolation tube (11), a sealing member (26) being fixedly installed at the bottom of the movable core (27), and the sealing member (26) being arranged on the inner side of the top of the piston assembly (4); The magnetic isolation tube (11) comprises a soft magnetic tube seat (29), the soft magnetic tube seat (29) is sleeved on the outer side of the upper end of the iron core assembly (8), a stainless steel tube (30) is fixedly mounted on the top of the soft magnetic tube seat (29), a soft magnetic core (31) is fixedly mounted on the top of the stainless steel tube (30), and the induction switch (15) is fixedly mounted inside the soft magnetic core (31); The piston assembly (4) comprises a base (32), the base (32) being movably mounted inside the upper end of the valve body (1), a sealing plug (34) being fixedly mounted on the inner side of the upper end of the base (32) via a fourth O-ring (33), a pilot valve port being arranged in the middle of the sealing plug (34), the inner side of the sealing plug (34) being fixedly connected to the lower end of the core assembly (8) via a fifth O-ring (35), the size of the sealing plug (34) corresponding to the size of the inner side of the base (32), and the piston spring (2) being sleeved on the outer side of the sealing plug (34); A pin handle (25) is fixedly connected to the right side of the rotating handle (24), and a protrusion is provided at the lower left end of the rotating handle (24), and the protrusion is fitted and connected to the bottom right side of the lower end of the iron core assembly (8); The outer side of the upper end of the top of the valve cover (5) is threadedly connected with a hexagon socket screw (20), and the inner side of the hexagon socket screw (20) is provided with a pin (21) and a spring washer (22); A groove is provided on the surface of the rotating handle (24) at a position corresponding to the pin (21), and a second O-ring (23) is provided on the outer side of the left end of the rotating handle (24).

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