A two-position three-way electromagnetic valve for ships

Abstract

The utility model provides a kind of two-position three-way electromagnetic valve for warship, including main valve assembly, pilot assembly and electromagnetic assembly;The inside lower part of main valve assembly is provided with lower piston chamber, the inside upper part of main valve assembly is provided with upper piston chamber, the inside middle part of main valve assembly is provided with connecting channel, lower sealing piston and lower sealing spring are provided in lower piston chamber, upper sealing piston and upper sealing spring are provided in upper piston chamber, connecting rod is provided in connecting channel;The front side lower part of main valve assembly is provided with air inlet, the inside lower part of main valve assembly is provided with closing channel, the rear side middle part of main valve assembly is provided with air outlet, the front side upper part of main valve assembly is provided with exhaust port;The inside of main valve assembly is provided with pilot air inlet channel, the inside of main valve assembly is provided with pilot air outlet channel.The above-mentioned electromagnetic valve is driven by the pressure difference between upper sealing piston and lower sealing piston, and can be suitable for high-pressure environment.

Description

Technical Field

[0001] This utility model relates to solenoid valves, and more particularly to a two-position three-way solenoid valve for ships. Background Technology

[0002] Currently, Chinese patent CN202756740U discloses a two-position three-way direct-acting solenoid valve, including a valve body, a valve bottom plug, a top cover, a housing assembly, a piston assembly, a valve plug assembly, a coil assembly, a moving iron core, a push rod, a manual device, and a wiring device. The valve body is bolted to the housing assembly, and the housing assembly is bolted to the top cover. The valve bottom plug is threaded to the bottom of the valve body. A manual push rod is installed inside the top cover, and a moving iron core is installed inside the housing assembly. The flow passage of the valve body is equipped with a valve plug assembly and a piston assembly. A spring is provided at the bottom of the valve plug assembly, with both ends of the spring abutting against the valve plug assembly and a spring seat, respectively. The upper end of the piston assembly is connected to the transmission push rod mounted at the lower end of the piston assembly; the upper end of the piston assembly is connected to the push rod mounted on the moving iron core and extending to the lower end of the outer shell assembly. The valve body has three flow channel holes: flow channel hole A, flow channel hole O, and flow channel hole P, which communicate with the flow channel of the valve body. The outer shell assembly contains a coil assembly, a conductive electromagnetic plate connected to the coil assembly, and a terminal block connected to the electromagnetic plate. The terminal block has terminal posts, and the wiring device is welded to the upper cover. The manual device is threaded to the upper cover, and the lower end of the manual device is connected to the upper end of the manual push rod inside the upper cover. The lower end of the manual push rod is connected to the push rod mounted on the moving iron core. The upper end of the valve plug assembly is equipped with a valve plug seal. The lower end of the piston assembly is equipped with a piston seal. However, the above-mentioned solenoid valve is a direct-acting solenoid valve, which is only suitable for environments with relatively low pressure and cannot be used in environments with relatively high pressure. Utility Model Content

[0003] In view of this, the purpose of this utility model is to provide a two-position three-way solenoid valve for ships, which is suitable for environments with relatively high pressure.

[0004] To solve the above-mentioned technical problems, the technical solution of this utility model is: a two-position three-way solenoid valve for ships, including a main valve assembly, a pilot assembly and a solenoid assembly;

[0005] The main valve assembly has a lower piston chamber on its inner lower part and an upper piston chamber on its inner upper part. A connecting channel is located in the middle of the inner side of the main valve assembly, connecting to both the lower and upper piston chambers. A lower sealing piston and a lower sealing spring are located in the lower piston chamber. The lower sealing spring forces the lower sealing piston to seal the lower end of the connecting channel. An upper sealing piston and an upper sealing spring are located in the upper piston chamber. The upper sealing spring forces the upper sealing piston to seal the upper end of the connecting channel. The upper sealing piston is larger than the lower sealing piston. A connecting rod is located in the connecting channel, connecting to both the upper and lower sealing pistons.

[0006] The main valve assembly has an air inlet at the lower front side, which is connected to the upper part of the lower piston chamber. The main valve assembly has a closing channel at the lower inner side, which is connected to the air inlet and the lower part of the lower piston chamber. The main valve assembly has an air outlet at the middle rear side, which is connected to the middle of the connecting channel. The main valve assembly has an exhaust port at the upper front side, which is connected to the lower part of the upper piston chamber.

[0007] The main valve assembly has a mounting groove at its upper end and a pilot air intake channel on its inner side. The pilot air intake channel is connected to the air inlet and the mounting groove. The main valve assembly also has a pilot air outlet channel on its inner side. The pilot air outlet channel is connected to the upper piston chamber and the mounting groove.

[0008] The pilot assembly includes a magnetic shielding tube, a movable iron core, and a return spring. The lower end of the magnetic shielding tube is disposed in the mounting groove. The inner cavity of the magnetic shielding tube is connected to the pilot air intake channel and the pilot air outlet channel. The movable iron core is slidably disposed inside the magnetic shielding tube. The return spring is connected to the magnetic shielding tube and the movable iron core. The return spring drives the movable iron core to seal the upper end of the pilot air intake channel through its elastic force.

[0009] The electromagnetic component is located on the outside of the magnetic shielding tube. When the electromagnetic component is energized, it will drive the movable iron core to slide upward.

[0010] With the above technical solution, when the electromagnetic component is de-energized, the movable iron core is driven downward by the return spring and seals the pilot air intake channel. In this state, the gas in the intake channel enters the lower piston chamber through the closed channel and applies upward pressure to the lower sealing piston in the lower piston chamber. At this time, the lower sealing piston will move upward under the pressure of the gas and the elastic force of the lower sealing spring, sealing the lower end of the connecting channel. At the same time, the lower sealing piston will drive the upper sealing piston upward through the connecting rod to release the seal of the upper sealing piston on the upper end of the connecting channel, so that the outlet and exhaust port are connected.

[0011] When the electromagnetic component is energized, the movable iron core moves upward under magnetic force to release the seal on the pilot air intake channel. In this state, the gas in the intake channel flows sequentially through the pilot air intake channel, the inner cavity of the magnetic shielding tube, and the pilot initial channel, entering the upper piston chamber and applying downward pressure to the upper sealing piston. Since the upper sealing piston is larger than the lower sealing piston, the downward pressure on the upper sealing piston is greater than the upward pressure on the lower sealing piston. The upper sealing piston moves downward under the pressure of the gas and the elastic force of the upper sealing spring, sealing the upper end of the connecting channel. Simultaneously, the upper sealing piston drives the lower sealing piston downward via the connecting rod, releasing the seal on the lower end of the connecting channel and connecting the air inlet and outlet.

[0012] The aforementioned solenoid valve is driven by the pressure difference between the upper and lower sealing pistons, making it suitable for high-pressure environments.

[0013] Preferably, the upper sealing piston and the lower sealing piston have the same structure, including a piston sleeve and a sealing block. The outer peripheral wall of the piston sleeve is provided with an installation ring groove, and a sealing ring is provided in the installation ring groove. The outer ring of the sealing ring is in close contact with the main valve assembly. The end of the piston sleeve near the connecting channel is provided with an embedding groove, and the sealing block is embedded in the embedding groove to seal the connecting channel.

[0014] Through the above technical solution, the sealing ring seals the gap between the piston sleeve and the main valve assembly, thereby ensuring the normal opening and closing of the solenoid valve. The sealing block effectively seals the connection channel when it contacts the end of the connection channel.

[0015] Preferably, the device further includes a mounting bolt and a mounting nut. The head of the mounting bolt abuts against the sealing block, and the threaded section of the mounting bolt passes through the sealing block and the piston sleeve in sequence. The mounting nut is threadedly connected to the threaded section of the mounting bolt to press and fix the sealing block and the piston sleeve together.

[0016] The above technical solution uses mounting bolts and mounting nuts to press and fix the sealing block and piston sleeve together, thereby improving the connection stability between the sealing block and piston sleeve.

[0017] Preferably, the piston sleeve has a receiving groove at the end away from the connecting channel, the receiving groove being used to receive the mounting nut, the upper sealing spring, and the lower sealing spring.

[0018] By using the above technical solution, a receiving groove is opened at the end of the piston sleeve to receive the mounting nut, the upper sealing spring and the lower sealing spring, making the structure of the solenoid valve more compact and smaller in size.

[0019] Preferably, the main valve assembly includes a valve seat, a valve body, and a valve cover, the lower piston chamber is formed by the valve seat and the valve body, and the upper piston chamber is formed by the valve body and the valve cover.

[0020] Through the above technical solution, the main valve assembly consists of a valve seat, a valve body, and a valve cover, which makes the machining of the upper piston chamber and the lower piston chamber more convenient. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of an embodiment. Figure 1 ;

[0022] Figure 2 This is a schematic diagram of the structure of an embodiment. Figure 2 ;

[0023] Figure 3 This is a schematic diagram of the structure of an embodiment. Figure 3 .

[0024] Reference numerals: 1. Lower piston chamber; 2. Upper piston chamber; 3. Connecting channel; 4. Main valve assembly; 41. Valve seat; 42. Valve body; 43. Valve cover; 5. Pilot assembly; 51. Magnetic shielding tube; 52. Movable iron core; 53. Return spring; 6. Electromagnetic assembly; 7. Lower sealing piston; 71. Piston sleeve; 72. Sealing block; 73. Mounting bolt; 74. Mounting nut; 8. Lower sealing spring; 9. Upper sealing piston; 10. Upper sealing spring; 11. Connecting rod; 12. Air inlet; 13. Closing channel; 14. Air outlet; 15. Exhaust port; 16. Mounting groove; 17. Pilot air inlet channel; 18. Pilot air outlet channel; 19. Mounting ring groove; 20. Sealing ring; 21. Embedded groove; 22. Receiving groove. Detailed Implementation

[0025] The specific embodiments of this utility model will be further described in detail below with reference to the accompanying drawings, so that the technical solution of this utility model can be more easily understood and mastered.

[0026] A type of two-position three-way solenoid valve for ships, such as Figures 1 to 3 As shown, it includes a main valve assembly 4, a pilot assembly 5, and an electromagnetic assembly 6 arranged sequentially from bottom to top.

[0027] A lower piston chamber 1 is formed in the lower inner part of the main valve assembly 4, and an upper piston chamber 2 is formed in the upper inner part of the main valve assembly 4. A connecting channel 3 is formed in the middle inner part of the main valve assembly 4, and the connecting channel 3 connects to the lower piston chamber 1 and the upper piston chamber 2. A lower sealing piston 7 and a lower sealing spring 8 are provided in the lower piston chamber 1. The lower sealing spring 8 drives the lower sealing piston 7 to seal the lower end of the connecting channel 3 through its elastic force. An upper sealing piston 9 and an upper sealing spring 10 are provided in the upper piston chamber 2. The upper sealing spring 10 drives the upper sealing piston 9 to seal the upper end of the connecting channel 3 through its elastic force. The diameter of the upper sealing piston 9 is larger than the diameter of the lower sealing piston 7. A connecting rod 11 is provided in the connecting channel 3, and the connecting rod 11 connects to the upper sealing piston 9 and the lower sealing piston 7.

[0028] An air inlet 12 is provided on the lower front side of the main valve assembly 4, and the air inlet 12 is connected to the upper part of the lower piston chamber 1. A closing channel 13 is provided on the lower inner side of the main valve assembly 4, and the closing channel 13 is connected to the air inlet 12 and the lower part of the lower piston chamber 1. An air outlet 14 is provided on the middle rear side of the main valve assembly 4, and the air outlet 14 is connected to the middle part of the connecting channel 3. An exhaust port 15 is provided on the upper front side of the main valve assembly 4, and the exhaust port 15 is connected to the lower part of the upper piston chamber 2.

[0029] The main valve assembly 4 has a mounting groove 16 at its upper end. A pilot air intake passage 17 is provided inside the main valve assembly 4, connecting to the air inlet 12 and the mounting groove 16. A pilot air outlet passage 18 is also provided inside the main valve assembly 4, connecting to the upper piston chamber 2 and the mounting groove 16.

[0030] The pilot assembly 5 includes a magnetic shielding tube 51, a movable iron core 52, and a return spring 53. The lower end of the magnetic shielding tube 51 is disposed in the mounting groove 16, and the inner cavity of the magnetic shielding tube 51 is connected to the pilot air intake channel 17 and the pilot air outlet channel 18. The movable iron core 52 is slidably disposed inside the magnetic shielding tube 51. The return spring 53 is connected to the magnetic shielding tube 51 and the movable iron core 52, and the return spring 53 drives the movable iron core 52 to seal the upper end of the pilot air intake channel 17 through its elastic force.

[0031] The electromagnetic component 6 is located outside the magnetic shielding tube 51. When the electromagnetic component 6 is energized, it will drive the movable iron core 52 to slide upward.

[0032] The upper sealing piston 9 has the same structure as the lower sealing piston 7, including a piston sleeve 71 and a sealing block 72. An mounting ring groove 19 is formed on the outer peripheral wall of the piston sleeve 71, and a sealing ring 20 is disposed in the mounting ring groove 19. The outer ring of the sealing ring 20 is tightly fitted against the main valve assembly 4. A groove 21 is formed at the end of the piston sleeve 71 near the connecting channel 3, and the sealing block 72 is embedded in the groove 21 to seal the connecting channel 3.

[0033] It also includes mounting bolts 73 and mounting nuts 74. The head of mounting bolts 73 abuts against the sealing block 72. The threaded section of mounting bolts 73 passes through the sealing block 72 and the piston sleeve 71 in sequence. The mounting nuts 74 are threadedly connected to the threaded section of mounting bolts 73 to press and fix the sealing block 72 and the piston sleeve 71.

[0034] The piston sleeve 71 has a storage groove 22 at the end away from the connecting channel 3. The storage groove 22 is used to store the mounting nut 74, the upper sealing spring 10 and the lower sealing spring 8.

[0035] The main valve assembly 4 includes a valve seat 41, a valve body 42, and a valve cover 43. The lower piston chamber 1 is formed by the valve seat 41 and the valve body 42, and the upper piston chamber 2 is formed by the valve body 42 and the valve cover 43.

[0036] Of course, the above are just typical examples of this utility model. In addition, this utility model may have many other specific implementation methods. All technical solutions formed by equivalent substitution or equivalent transformation fall within the scope of protection claimed by this utility model.

Claims

1. A two-position three-way solenoid valve for ships, comprising a main valve assembly (4), a pilot assembly (5), and a solenoid assembly (6); characterized in that: The main valve assembly (4) has a lower piston chamber (1) on its lower inner side and an upper piston chamber (2) on its upper inner side. A connecting channel (3) is located in the middle of the inner side of the main valve assembly (4). The connecting channel (3) connects to the lower piston chamber (1) and the upper piston chamber (2). A lower sealing piston (7) and a lower sealing spring (8) are installed in the lower piston chamber (1). The lower sealing spring (8) drives the lower sealing piston (7) through its elastic force. The upper sealing piston (9) and the upper sealing spring (10) are provided in the upper piston chamber (2). The upper sealing spring (10) drives the upper sealing piston (9) to seal the upper end of the connecting channel (3) by elastic force. The upper sealing piston (9) is larger than the lower sealing piston (7). The connecting channel (3) is provided with a connecting rod (11). The connecting rod (11) is connected to the upper sealing piston (9) and the lower sealing piston (7). The main valve assembly (4) has an air inlet (12) at the lower front side, which is connected to the upper part of the lower piston chamber (1). The main valve assembly (4) has a closing channel (13) at the lower inner side, which is connected to the air inlet (12) and the lower part of the lower piston chamber (1). The main valve assembly (4) has an air outlet (14) at the middle rear side, which is connected to the middle part of the connecting channel (3). The main valve assembly (4) has an exhaust port (15) at the upper front side, which is connected to the lower part of the upper piston chamber (2). The main valve assembly (4) has an installation groove (16) at its upper end and a pilot air intake channel (17) on its inner side. The pilot air intake channel (17) is connected to the air inlet (12) and the installation groove (16). The main valve assembly (4) also has a pilot air outlet channel (18) on its inner side. The pilot air outlet channel (18) is connected to the upper piston chamber (2) and the installation groove (16). The pilot assembly (5) includes a magnetic shielding tube (51), a movable iron core (52), and a return spring (53). The lower end of the magnetic shielding tube (51) is disposed in the mounting groove (16). The inner cavity of the magnetic shielding tube (51) is connected to the pilot air intake channel (17) and the pilot air outlet channel (18). The movable iron core (52) is slidably disposed inside the magnetic shielding tube (51). The return spring (53) is connected to the magnetic shielding tube (51) and the movable iron core (52). The return spring (53) drives the movable iron core (52) to seal the upper end of the pilot air intake channel (17) by elastic force. The electromagnetic component (6) is located outside the magnetic shielding tube (51). When the electromagnetic component (6) is energized, it will drive the movable iron core (52) to slide upward.

2. A two-position three-way solenoid valve for ships according to claim 1, characterized in that: The upper sealing piston (9) has the same structure as the lower sealing piston (7), including a piston sleeve (71) and a sealing block (72). The piston sleeve (71) has an installation ring groove (19) on its outer peripheral wall. A sealing ring (20) is provided in the installation ring groove (19). The outer ring of the sealing ring (20) is close to the main valve assembly (4). The piston sleeve (71) has a groove (21) at the end near the connecting channel (3). The sealing block (72) is embedded in the groove (21) to seal the connecting channel (3).

3. A two-position three-way solenoid valve for ships according to claim 2, characterized in that: It also includes a mounting bolt (73) and a mounting nut (74). The head of the mounting bolt (73) abuts against the sealing block (72). The threaded section of the mounting bolt (73) passes through the sealing block (72) and the piston sleeve (71) in sequence. The mounting nut (74) is threadedly connected to the threaded section of the mounting bolt (73) to press and fix the sealing block (72) and the piston sleeve (71).

4. A two-position three-way solenoid valve for ships according to claim 3, characterized in that: The piston sleeve (71) has a receiving groove (22) at the end away from the connecting channel (3). The receiving groove (22) is used to receive the mounting nut (74), the upper sealing spring (10) and the lower sealing spring (8).

5. A two-position three-way solenoid valve for ships according to claim 1, characterized in that: The main valve assembly (4) includes a valve seat (41), a valve body (42), and a valve cover (43). The lower piston chamber (1) is formed by the valve seat (41) and the valve body (42), and the upper piston chamber (2) is formed by the valve body (42) and the valve cover (43).

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